Wendeplatte

Wendeplatte (5) mit zwei einander abgewandten Deckflächen (9) mit jeweils zwei die Deckflächen (9) randseitig begrenzenden Schneidkanten (7), gekennzeichnet durch einen bogenförmigen Verlauf jeder Schneidkante (7) ...

Aus einem drehbaren Schneidwerkzeug, einem Werkzeughalter und einer Basis bestehendeAnordnung

Eine Schneidwerkzeughalter-Basis-Anordnung (399) weist eine Basis (400) auf. Die Basis (400) ist zur Befestigung an einer Fläche (40) eines drehbaren Antriebsglieds (38) ausgeführt. Die Werkzeughalter-Basis-Anordnung (399) enthält einen Schneidwerkzeughalter (500) mit einem Kopfbereich (502), der eine Schneidwerkzeugbohrung (506) enthält, und einem Schaftbereich (504) mit einer distalen Ende (524). Der Schaftbereich (504) weist eine Ausrichtungskerbe (528) auf, die eine Ausrichtungsfläche (530) am distalen Ende (524) aufweist. Des Weiteren weist die Anordnung (399) eine Basis (400) auf, die eine Werkzeughalterbohrung (418) und einen Querkanal (430), der die Werkzeughalterbohrung (418) schneidet, enthält. Es befindet sich ein länglicher Stift (436) in dem Querkanal (430). Der längliche Stift (436) weist einen freiliegenden Teil (440) auf, der sich durch die Werkzeughalterbohrung (418) erstreckt, wobei der Schneidwerkzeughalter (500) vollständig in die Werkzeughalterbohrung (418) der Basis ...

Werkzeug und Verfahren zur Bearbeitung eines Werkstücks

Werkzeug (1) zur Bearbeitung eines Werkstücks das um eine Achse (A) rotierbar ist, mit einem Werkzeuggrundkörper (3) mit zumindest einem zu einer Bearbeitungsfläche (11) orientierten Schneideinsatz (15) zur Grobbearbeitung und einem Schleifelement (9) zur Feinbearbeitung des Werkstücks, wobei das Schleifelement (9) relativ zum Werkzeuggrundkörper (3) aus einer rückgezogenen Ruheposition zur Bearbeitungsfläche (11) hin in eine Bearbeitungsposition verstellbar ist, dadurch gekennzeichnet, dass eine im Werkzeuggrundkörper (3) verschiebbare Druckplatte (5) vorgesehen ist, die mechanisch mit dem Schleifelement (9) verbunden ist und die einen Druckraum (49) für ein Fluid begrenzt, wobei der Werkzeuggrundkörper (3) eine Kühlfluidzuleitung (53) aufweist, die über eine Öffnung (51) mit dem Druckraum (49) verbunden ist.

Schneideeinsatz und Werkzeughalter dafür

METHOD FOR PRODUCING A CUTTING TOOL AND A CUTTING TOOL

The invention relates to a method for producing a cutting tool with a tip (16), a shaft (10) and a chucking groove area in which chucking chambers (12, 14) are provided. Said cutting tool is coated with a hardening component substantially across its entire surface. The invention is further characterized in that before the cutting tool is coated with the hardening component only the tip (16) is micro-blasted. The inventive cutting tool is especially a full carbide drill.

SIALON CONTAINING YTTERBIUM AND METHOD OF MAKING

A SiAlON material that includes a two phase composite of an alpha prime SiAlON phase and a beta prime SiAlON phase. The alpha prime phase contains ytterbium. The alpha prime SiAlON phase being present in an amount between about 25 weight percent and about 85 weight percent of the two phase composite. The SiAlON material further includes an intergranular phase.

CUTTING INSERT WITH CHIP CONTROL

An indexable cutting insert (10) is disclosed capable of cutting operations over a wide range of depth of cuts. The insert has different geometries at different locations on the cutting surface such that, under differing cutting parameters, a desirable cutting surface will be in contact with the workpiece.

BALANCING ASSEMBLY FOR A ROTATING MEMBER

Briefly, according to this invention, there is provided a balancing assembly (10) for balancing a rotating member (12) and the combination of a rotating member and balancing assembly. The balancing assembly (10) includes an annular ring (22), a locking member (44) and a cover (24). The annular ring (22) has an opening (34) for receiving the rotating member (12) and at least one removable primary balancing weight (26) and at least one removable secondary balancing weight (28). The locking member (44) secures the annular ring (22) with respect to the rotating member (12). The cover (24) operatively contains the secondary balancing weight (28) with respect to the annular ring (22) and includes a connecting section for removably coupling the cover (24) to the annular ring.

DRILLING TOOL

The invention discloses a drilling tool (1) having at least one chip groove (2) for chip removal, having an insert seat (4) which is formed at the end of the chip groove (2) and serves as a holder for an indexable insert (3) with at least one main cutting edge (10) on the two narrow sides and with at least one secondary cutting edge (9) on the two longitudinal sides of one face side, wherein the indexable insert (3) has two face sides facing away from one another and bears with its inactive face side on a holding surface of the insert seat (4), and a partial region of the inactive secondary cutting edge (9) of its active face side lies in the insert seat (4) at a distance from the adjoining side wall (11) of the insert seat (4) created by a slot, and wherein a guide lip (12) which covers the slot protrudes out of the top side of the side wall (11) in the direction of the inactive secondary cutting edge (9).

AXIAL SEATING PIN

A cutting tool (10) having a body (12) with an axis (20). A pocket (22') having a primary bearing face (24) and a radial wall (26) formed on the surface of the body (12). An insert (28) is removably connected to the pocket (22) at the primary bearing face (24) and is positioned adjacent the radial wall (26). An axial seating pin (32) is removably connected to the body (12) and extends at an angle substantially perpendicular to the axis (20) of the body (12). The axial seating pin (32) has an abutting face that contacts a face (30) of the insert (28) and prevents the insert (28) from moving axially during operation.

TIRE STUD

ARRANGEMENT FOR MOUNTING A CUTTER

TITLE OF THE INVENTION ARRANGEMENT FOR MOUNTING A CUTTER An arrangement and method for mounting a cutter body, especially a milling cutter, in which the cutter and power driven spindle have a common axis of rotation. An arbor shank is used to interconnect the cutter with the spindle with one end of the shank mating with a shouldered bore formed in one of the spindle and cutter. Radially movable clamp elements are provided to expand and engage the shoulder so as to urge one face of the cutter body into firm abutment with one end of the spindle. Keying means are also provided between the cutter body and the power driven spindle.

METALLURGICAL COMPOSITION EMBODYING HARD METAL CARBIDES, AND METHOD OF MAKING

A hard wear resistant metallurgical composition which in general is a combination of tungsten, titanium, nickel and carbon and may include other elements such as chromium. In preparing the composition, tungsten carbide is admixed by milling with nickel and titanium and subsequently sintered. The titanium may react with carbon from the tungsten carbide and the released tungsten may alloy with nickel to form a tough binder. The characteristics of the end product may be tailored by controlling the proportions of the various components of the composition including adjustment of the amount of titanium added to the mixture. By this control, the end product may be made magnetic or non-magnetic without losing desirable characteristics of strength, hardness and wear resistance.

CUTTING INSERT AND HOLDER

TITLE OF THE INVENTION CUTTING INSERT AND HOLDER An improved indexable cutting insert and tool holder for threading operations comprises an insert having end wall regions and parallel sides and parallel top and bottom walls perpendicular to said sides. The insert is invertable about the axis perpendicular to its sides and is adapted for mounting in the pocket of a tool holder with one end region exposed. A recess is formed in at least one of the top and bottom walls along the outer edges with an outer region forming cutting edges at its juncture with the end wall region. The recess also has an inner region in the form of an abrupt rise leading from the lowermost part of the outer region upwardly to the plane of the top or bottom wall. The cutting edges are angled so that when the insert is placed in a negative rake holder the cutting edges can be presented at zero or positive rake to the workpiece.

HIGH TEMPERATURE, HIGH PRESSURE APPARATUS HAVING A DUCTILE DRIVER ELEMENT

TITLE OF THE INVENTION HIGH TEMPERATURE, HIGH PRESSURE APPARATUS HAVING A DUCTILE DRIVER ELEMENT A high pressure, high temperature, piston-cylinder type apparatus utilizing a soft, ductile, electrically conductive material as a driver element to transmit pressure from the piston to a charge in the cylinder. The driver element, preferably made of lead, or the like, is placed in the pressure cylinder between an advanceable piston and a stationary sleeve of insulating material surrounding an electrically heatable core of charge material. As the piston is advanced, the lead driver element deforms into the end of the sleeve of insulating material and maintains pressure on the core without deformation of the sleeve of insulating material.

INDEXABLE CUTTING INSERT

TITLE OF THE INVENTION AN INDEXABLE CUTTING INSERT This invention relates to an indexable broadnosing cutting insert for use in boring and broadnosing applications, especially where a floating type of boring head is required. This insert, preferably, has a triangular-like shape. Each side of this triangular-like shape actually being made of three angularly related faces: a forward lead clearance face, a middle clearance face and rear relief face. The forward lead clearance face and the middle clearance face are joined to the top face of the insert by a narrow, vertical wiper face.

TINE

PERCUSSION BIT WITH BYPASS CHANNEL THEREIN

TITLE OF THE INVENTION PERCUSSION BIT WITH BYPASS CHANNEL THEREIN A percussion bit for use with a down-the-hole drilling motor having a hammer which reciprocates in the motor to impact on the upper end of the bit. The bit has a working position in the motor and an idle advanced position. When the bit is in the idle advanced position, the hammer advances to an idle position, and, at that time, it is desired for the hammer merely to rest on the bit without impacting the bit. The hammer is reciprocated by fluid pressure and, according to the present invention, a bypass channel is formed directly in the bit which exhausts one of the pressure chambers for the hammer when the bit is in its advanced position.

METHOD OF AND DEVICE FOR HOLDING A CUTTING INSET IN THE POCKET OF A TOOL HOLDER

TITLE OF THE INVENTION METHOD OF AND DEVICE FOR HOLDING A CUTTING INSERT IN THE POCKET OF A TOOL HOLDER A tool holder having an insert receiving pocket, the pocket having bottom wall and side wall means with an improved arrangement for and method of providing quick indexing or complete changing of an indexable insert. The improved arrangement comprises a pin element with a conical head on one end for engagement with a cutting insert and cooperating elements of a press-on, pry-off connection between the end of the pin and the tool holder. The insert and pin element are detachably fastened together as one unit, and when the insert is in the pocket with the pin clamped to the holder, the unit is held securely in position for cutting engagement with a workpiece.

STRIKING BAR FOR CAGE MILL

METHOD AND APPARATUS FOR CENTRIFUGAL COMPACTION

A method and apparatus for the centrifugal compaction of particulate material in which the particulate material is admixed with a liquid to form a slurry and is then placed in a chamber and centrifuged about a main axis to cause the material to compact into a discrete body. A particular feature of the invention is to be found in the fact that the chamber in which the slurry is contained during compacting is caused to rotate about an axis inclined to the main axis so that the particulate material is agitated and thereby nests intimately together during the centrifuging operation thereby resulting in workpieces significantly more dense than can be arrived at by simple centrifuging or even by pressing.

CUTTING TOOLS

ANTI-ROTATION MOUNTING MECHANISM FOR ROUND CUTTING INSERT

The mechanism (1) includes a plurality of curved stop surfaces (35) uniformly disposed around the side surface of the insert (3), a portion of which is obliquely oriented with respect to the side surface of the insert, and at least one anti-rotation surface (36) in the pocket (5) of the tool body (7) having a shape substantially complementary to that of the stop surfaces (35) for forming an interference joint between the pocket (5) and the insert (3). Both the stop surfaces (35) and the anti-rotation surface (36) are substantially defined by partial radius curves.

SEED BOOT ATTACHMENT AND WEAR RESISTANT INSERT THEREFOR

A seed boot attachment for depositing a seed within a furrow including a synclinal shape housing extending to a forward point, furrow forming points extending rearwardly and downwardly from opposing side edges of a bottom surface of the housing; and at least one wear resistant insert secured to at least one of the side member of the furrow forming point, the insert comprising a truncated polyhedron, having a top face of a triangular shape, an opposing flat bottom face of a triangular shape and angled side faces extending between the peripheral edges of the top and bottom faces wherein at least two of the outer corners of the polyhedron are radiused ...

TOOLHOLDER ASSEMBLY

An apparatus (10) is disclosed for releasably holding a toolholder shank (30) having a lockable surface (90, 95) and a releasable surface (185) utilizing an actuating bolt (20) with an associated threaded actuating nut (75). When the actuating bolt (20) is rotated in a locking direction, the actuating nut (75) is drawn onto the bolt (20) thereby clamping against the lockable surfaces (90, 95) of the toolholder shank (30). When the actuating bolt (20) is rotated in the releasing direction, a releasing segment (170) acts upon the toolholder (25) thereby ejecting it from the tool support member (15).

CUTTING INSERT

Description of the design: The design is the shape, configuration, pattern and ornament of the cutting insert as shown in the drawings. The most significant features are (a) the generally round perimeter in top and bottom views, (b) a plurality of spaced-apart arcuate openings at the top surface (as best seen in figure 3, where the openings appear in the middle ring (which is the third ring from both the perimeter and the inside) surrounding the generally rectangular areas), (c) a plurality of spaced-apart openings in the bottom surface, and (d) the side surface comprising a plurality of spaced-apart scallop-shaped regions.Drawings of the design are included wherein:Figure 1 is a front perspective view looking down on the top surface of the cutting insert;Figure 2 is a front perspective view looking up on the bottom surface of the cutting insert of Figure 1;Figure 3 is a top view of the cutting insert of Figure 1;Figure 4 is a bottom view of the cutting insert of Figure 1; Figure 5 is a ...

COMPRESSIBLE SCREW-TYPE LOCKING MECHANISM

The present invention relates to compressible screw-type locking mechanism including an oversized locking screw (12) and a tool for compressing and rotatively driving the oversized locking screw (12) is a head portion (12a) and extending downwardly from the head portion is a threaded shaft (12G). At least one longitudinal slot (18) extends through the head and at least partially through the shaft to form a locking screw with plural resilient segments. The locking screw assumes a normal expanded state with its threaded pitch diameter being oversized with respect to its companion bore. The locking screw is compressed by engaging the head (12a) thereof with the tool (16). In one embodiment, the compression of the locking screw is achieved through a torquing action. In a second embodiment, the compression is achieved by the axial movement of the tool. In either case, by relieving the applied torque or removing the tool. In either case, by relieving the applied torque or removing the tool from ...

CUTTER BIT

An article comprised of a first material and at least one additional material incorporates a sacrificial constraint. For example, a cutter bit has a bit body that contains a concavity and a sacrificial constraint in a axially first end. A cutter insert or a plurality of cutter inserts are brazed to the bit body at the periphery and in an annular channel or pocket defined by a first surface at the periphery of the concavity, a second surface radially outward form the first surface and radially inward from a sacrificial constraint that extends radially outward at the open end of the concavity. The sacrificial constraint may be removed from the article either prior to use by, for example, machining, or during use by, for example, attrition.

COLLET FOR A SQUARE-SHANK TAP

A collet (10) is designed for a tool (200) having a cylindrical shank (202) and a square drive (204) at the rearward end of the cylindrical shank. The collet inludes a collet body (12) having a plurality of radially compressible collet segments (30). An axial bore (20) is formed in the collet body (12) for receiving the cylindrical shank (202) of the tool (200). The tool (200) is secured in the axial bore (20) by collapsing the collet segments (30) around the cylindrical shank (202) of the tool (200). A grip-forming slot (40) extends through a midsection (24) of the collet body (12) and communicate with the axial bore (20) so as to receive the square drive (204) of the tool (200) when the tool (200) is inserted into the axial bore (20). A pair of gripping surfaces (42) are formed on respective collet segments (30) on opposite sides of the grip-forming slot (40) for gripping opposed surfaces of the square drive (204) when the collet segments (30) are radially collapsed to prevent radial ...

COLD HEADED CENTER VACUUM DRILL BIT

A drill bit(10) for drilling holes in a work surface including a hard wear-resistant insert (12) and a metal body (14) including a top working surface (16) of an irregular surface configuration having a slot (36) for retaining the hard wear-resistant insert (12). The body (14) having a metal grain structure substantially parallel with the contour of the body. In a preferred embodiment the body (14) is formed by cold-heading.

AGRICULTURAL INSERT

An insert for use in an agricultural tool having a cutting edge for forming a furrow. The insert includes an elongated wedge having a leading end, a trailing end, a top surface, a first side surface and a second opposing side surface coterminous therewith defining a longitudinally extending lowermost edge. The first and second side surface converge from the trailing end to the leading end and diverge from the lowermost edge to the top surface to form a v-shape leading end. In a preferred embodiment the insert includes a means for aligning the lowermost edge of the insert with the cutting edge of the tool.

INSERT FOR BALL NOSE END MILL

An insert for use in a ball nose end mill (1) is provided that includes an insert body (22) having a top wall (24), a bottom wall (28) and at least one arcuate side wall (30). An arcuate cutting edge (34) is defined at an intersection between the top and side walls that includes a plurality of sinusoidal undulations (36) for reducing cutting forces, and vibration, and enhancing the breaking and removal of chips removed from a workpiece (66) during a cutting operation. An end portion (67) of the insert crosses the axis of rotation (A) when the insert is mounted in the seat of an end mill body (3), and the undulations (36) reduce the considerable shear forces applied to the cutting edge (34) at this location. The cutting edge has a profile which follows the contour of a sphere to permit machining a rounded cut. The side wall (30) of the insert body includes an upper relief portion (44) disposed directly under the cutting edge, with a relief angle for preventing the undulations from making ...

PLOW BLADE

The plow blade (10) comprising support member (12), a blade edge (14) being mounted to the support member (12) and having one or more insert holes (36), and one or more blade inserts (16) having a wear portion (42), the one or more blade inserts (16) being mounted within the one or more insert holes (36) of the blade edge (14) such that th e wear portion (42) protrudes to some extent from the one or more insert holes (36).

TOOL COUPLING SYSTEM FOR MACHINE TOOLS

An improved coupling system for lockably coupling machine tool components is provided that includes a male coupling, a female coupling having an axis, a pair of opposing jaw members having lock surfaces for engaging ledge surfaces in the male coupling when the jaw members are moved apart, and a drive train having first and second drive spheres for simultaneously moving proximal and distal ends of the jaw members apart. The drive spheres engage ramps on the inner surfaces of the jaw members that have cylindrical profiles to provide lenticular contact between the spheres and the jaw members. Cam and follower surfaces are provided between the jaw members and one of the male or female couplings to enhance the locking force between the couplings. The invention provides a more rigid coupling between the male and female components by providing two locking spheres that operate in tandem to simultaneously spread the distal and proximal ends of the jaw members apart.

Outil de coupe

Composition frittée dure résistant à la corrosion.

Procédé de fabrication du carbure de titane.

Procédé d'agglomération de matières pulvérulentes.

Procédé de fabrication du monocarbure de tungstène à partir de matières contenant du tungstène.

Composition frittée, dure, résistant à la corrosion.

Schneideinsatz für spanabhebende Werkzeugmaschinen

SUPPORTING A CUTTING TOOL.

A TOOL HOLDER COMPRISING A RETRACTOR LOCKING GRAIN CUTTING.

TOOL HOLDER.

GRAIN CUTTING.

MILL.

GRAIN CUTTING.

A CUTTING INSERT AND ITS TOOL HOLDER.

GRAIN CUTTING.

CERAMIC MATERIAL AND METHOD OF MANUFACTURE.

GRAIN CUTTING.

WEAR-RESISTANT WORKPIECE.

CEMENTED CARBIDE BODY.

BODY AND SEAT FOR THE ATTACHMENT OF A PIN.

METHOD OF MAKING A DRILL, DRILL AND

COMPRISING COVERED ARTICLE OF THE COATINGS CONTAINING OF YTTRIUM BRACKETS BY PHYSICAL DEPOSIT IN VAPOUR PHASE AND MANUFACTORING PROCESS ASSOCIATES

L'invention concerne un article revêtu (100) comportant un substrat (102) et une combinaison de revêtement (106), qui comprend une région de revêtement DPV (110). La région de revêtement DPV (110) contient de l'aluminium, de l'yttrium, de l'azote et au moins un élément sélectionné dans le groupe constitué du titane, du zirconium, du hafnium, du vanadium, du niobium, du tantale, du chrome, du molybdène, du tungstène et du silicium. La somme des teneurs en aluminium et en yttrium représente un pourcentage atomique d'environ 3 % à environ 55 % de la somme de l'aluminium, de l'yttrium et des autres éléments. La teneur en yttrium représente un pourcentage atomique d'environ 0,5 % à environ 5 % de la somme de l'aluminium, de l'yttrium et des autres éléments. L'invention concerne aussi un procédé de fabrication de l'article revêtu (100), qui comprend les étapes consistant à fournir le substrat (102) et à déposer la combinaison de revêtement ci-dessus (106) avec la région de revêtement DPV (110 ...

TOOL For MACHINING OF PRECISION

Alésoir avec une partie de coupe cylindrique (1) comprenant plusieurs corps de coupe (4) disposés sur la surface latérale du cylindre, dans lequel les corps de coupe (4) présentent une zone de coupe (12) réalisée sous la forme d'une lèvre de coupe et une zone de guidage (13) s'y raccordant en continu dans la direction de progression (10).

MODULAR DRILL WITH EDGES OF CUT OUT OF DIAMOND

Foret modulaire (110) pour des applications d'usinage, comprenant un foret pilote central (130) constitué de carbure cémenté et d'inserts extérieurs radiaux (135, 140) présentant des bords de coupe (165, 167, 169) possédant une surface en diamant. En outre, la surface en diamant associée aux bords de coupe comporte des repères qui identifient chaque bord de coupe (165, 167, 169), de telle sorte que l'indexation des inserts (135, 140) soit réalisée plus facilement. Pour assurer que les repères supportent l'environnement d'usinage difficile, les repères sont gravés au laser sur la surface en diamant de l'insert (135, 140).

ELEMENT RESISTANT TO WEAR, COVERED BY THE MULTI-LAYER ONES AND ITS MANUFACTORING PROCESS

L'invention concerne un élément revêtu (100) résistant à l'usure ainsi qu'un procédé de fabrication de celui-ci, comprenant un substrat (104) et un agencement de revêtement (106). L'agencement de revêtement (106) présente une zone de sous-couches de revêtement alternées (110). Une sous-couche de revêtement (118A, 11 8B, 11 8C) est en TixAlySi100-x-yN, avec 40% en atome ≤ x ≤ 80% en atome ; 15% en atome ≤ y ≤ 55% en atome ; 4% en atome ≤ 100-x-y ≤ 15% en atome. L'autre sous-couche de revêtement (120A, 120B, 120C) est en TipAl100-pN, avec 45% en atome ≤ p ≤ 100% en atome. Le procédé de fabrication d'un élément revêtu résistant à l'usure (100) comprend les étapes de fourniture du substrat (102) et de dépôt de la zone de sous-couches de revêtement alternées (110).

CARBIDE TIPS FOR APPLICATIONS RESISTING WEAR

L'invention concerne des pastilles de carbure comprenant des quantités relativement petites de liant métallique qui sont produites par des étapes de pressage, de fragmentation, de profilage et de frittage. Les pastilles de carbure peuvent être utilisées comme des matériaux de surfaçage dur résistant à l'usure qui sont appliqués à différents types d'outils. Les pastilles de carbure apportent des propriétés mécaniques améliorées, telles que la dureté et l'abrasivité tout en maintenant des niveaux requis de ténacité et de résistance.

TOOL HOLDER LIKE SYSTEM Of TOOLS EQUIPS With a TOOL HOLDER AND a TOOL

La présente invention concerne un porte-outil (2) réalisé pour être fixé à une machine-outil ainsi que pour recevoir de façon réversible un outil radial, notamment une fraiseuse. Le porte-outil (2) est réalisé en trois parties avec une partie de machine arrière (6) réalisée à partir d'un acier à outils viscoélastique pour sa fixation réversible à la machine-outil, avec une partie de serrage avant (10) réalisée à partir d'un acier à outils pour recevoir de façon réversible l'outil ainsi qu'avec une partie intermédiaire (8) réalisée en métal lourd, notamment en métal dur, et disposée entre la partie de machine (6) et la partie de serrage (10). Le porte-outil (2) permet de mieux absorber les forces s'exerçant lors d'une opération de fraisage du fait de la densité du métal lourd relativement plus importante que celle de l'acier à outils, ce qui permet de réaliser une opération de fraisage épargnant plus l'outil et ainsi d'accroître la durée de vie de l'équipement.

Combination of the chucking device and a drill and a chucking device for a drill with cutting tips on both ends

A combination of a chucking device and a drill and a chucking device for a drill with cutting tips on both ends. The abstract of the disclosure is submitted herewith as required by 37 C.F.R. §1.72(b). As stated in 37 C.F.R. §1.72(b): A brief abstract of the technical disclosure in the specification must commence on a separate sheet, preferably following the claims, under the heading "Abstract of the Disclosure." The purpose of the abstract is to enable the Patent and Trademark Office and the public generally to determine quickly from a cursory inspection the nature and gist of the technical disclosure. The abstract shall not be used for interpreting the scope of the claims. Therefore, any statements made relating to the abstract are not intended to limit the claims in any manner and should not be interpreted as limiting the claims in any manner.

CASE MILL HAVING OUTWARDLY TAPERING FLOW PATH

ROTARY MINING TOOL RETAINING STRUCTURE

Gas regulator for thermal energy machining

A thermal energy machining (TEM) machine gas handling system in which the improvement is a fluid-controlled pressure regulation subsystem for controlling the dispensing of a TEM process gas via the regulation of the pressure of the TEM process gas. Such subsystems include a pressure regulator, a pressure transducer, and a digital controller working in combination to control the process gas outlet pressure of the pressure regulator. The pressure regulator's diaphragm that controls the valve that regulates the process gas outlet pressure is mechanically acted upon by the piston of a pneumatic or hydraulic cylinder. Controlling the pneumatic or hydraulic cylinder regulates the output pressure of the process gas. The pressure transducer and the digital controller work in combination to adjust the feed pressure of the pneumatic or hydraulic cylinder, which in turn regulates the pressure of the process gas at the outlet of the pressure regulator.

Cutting insert

Cutting arrangement for cutting a workpiece having a tool holder which holds a plurality of cutting tools therein

A tool holder having a number of tool receptacles which are provided in a parent body and into which a respective cutting tool can be inserted with a fastening shank and can be clamped in the tool receptacle via a clamping device. The clamping device in this case comprises a clamping bolt which extends laterally through a bore in the parent body up to the tool receptacle and has at its outer end a bolt head which can be actuated via a setting tool. The bolt head is in this case locked by a locking element which is attached to the parent body in the region of the bore and which forms a stop for the bolt head.

Anti-rotation mounting mechanism for a round insert

An anti-rotation mounting mechanism is provided between an indexable insert and an insert-receiving pocket in the body of a machine tool, such as a milling cutter. The mechanism includes a plurality of curved stop surfaces uniformly disposed around the side surface of the insert, a portion of which is obliquely oriented with respect to the side surface of the insert, and an anti-rotation feature in the pocket of the tool body having a pair of engagement portions that are substantially complementary in shape to that of the stop surfaces for forming an interference joint between the pocket and the insert. The anti-rotation feature further includes a central planar portion that does not engage the stop surfaces. The mechanism effectively prevents rotation between the insert and pocket without the formation of point-type, localized stresses which can chip or break the insert.

Coated ceramic cutting insert and method for making the same

A coated ceramic cutting insert for removing material from a workpiece, as well as a method for making the same, that includes a ceramic substrate with a rake surface and at least one flank surface wherein a cutting edge is at the juncture therebetween. A wear-resistant coating scheme that includes an alumina-containing base coating layer region, which has at least one exposed alumina coating layer, deposited by chemical vapor deposition on the substantially all of the surfaces of the ceramic substrate that experience wear during removal of material from the workpiece. The exposed alumina coating layer exhibits a blasted stress condition ranging between about 50 MPa (tensile stress) and about -2 GPa (compressive) as measured by XRD using the Psi tilt method and the (024) reflection of alumina. The exposed alumina coating layer is the result of wet blasting a titanium-containing outer coating layer region from the surface of the alumina-containing base coating layer region.

End Mill Cutter

End mill cutter having a plurality of cutting edges distributed over the circumference of the mill cutter, having a flank which is adjacent to the respective cutting edge in the circumferential direction and a supporting surface which adjoins the flank on that side which faces away from the cutting edge in the circumferential direction.

Multi-piece drill head and drill including the same

One non-limiting aspect of the present disclosure is directed to a multi-piece spade drill head for a spade drill, wherein the spade drill includes an elongate body portion and a cutting portion removably secured to an end of the body portion. The multi-piece spade drill head includes at least two insert pieces, each piece including a cutting edge. The at least two insert pieces are configured to be removably secured to the body portion of the spade drill adjacent one another and with the cutting edges of the insert pieces aligned to together form a cutting edge on an end of the spade drill.

APPARATUS FOR HOLDING A TOOLHOLDER SHANK

IMPROVED TAMPING BLADE WITH IMPROVED INSERTS

CERAMIC COMPOSITE AND ARTICLE MADE THEREOF

SPIRALBOHRER

BOHRER FÜR EIN BOHR-/FASWERKZEUG UND BOHR-/FASWERKZEUG

Bohrwerkzeug

Bohrwerkzeug mit mindestens zwei Spannuten (3a, 3b) und mit einer Querschneide (8) mit Ausspitzung (2) dadurch gekennzeichnet, dass die Ausspitzung (2) derart kontinuierlich in die Spannuten (3a, 3b) übergeht, dass sie das Ende der jeweiligen Spannut (3a, 3b) im Bereich der Querschneide (8) bildet.

Stechschneidplatte, Klemmhalter für eine Stechschneidplatte sowie Stechschneidwerkzeug

Stechschneidplatte zur Aufnahme in einem Klemmhalter (10), mit zwei entgegengesetzten Enden, wobei an einem Ende der Schneidplatte (14) eine die Hauptfreifläche (28) bildende Vorderseite und am entgegengesetzten Ende eine Rückseite (32), die im Wesentlichen parallel zur Vorderseite verläuft, und mit einer Ober- sowie einer Unterseite (36, 37) sowie Seitenflächen (44), wobei eine Hauptschneide (30) zwischen Vorderseite und Oberseite (36) gebildet ist, wobei längs der Ober- und der Unterseite (36, 37) sowie längs der gesamten Rückseite (32) verlaufende, jeweils im Querschnitt gesehen konisch aufeinander zulaufende Halteflächen (46, 54, 56) zur Bildung einer oberen, unteren und/oder rückseitigen Haltestruktur (42, 55, 52) vorhanden sind, mit der die Schneidplatte (14) werkzeugseitig formschlüssig gehaltert ist, und zumindest einige Haltestrukturen (42, 52, 55) als konvexe Längsrippen ausgebildet sind, deren entgegengesetzte Seitenflächen die Halteflächen (46, 54, 56) bilden, dadurch gekennzeichnet ...

Zerspanungswerkzeug, insbesondere Reibwerkzeug sowie Verfahren zu seiner Herstellung

Zerspanungswerkzeug (2), insbesondere Reibwerkzeug mit einem sich entlang einer Mittenlängsachse (4) in Axialrichtung (6) erstreckenden Grundkörper (16), an dem um den Umfang verteilt zumindest drei Schneidleisten (20) sowie ein Paar Führungsleisten (28A, B) ausgebildet sind, wobei die Führungsleisten (28A, B) in Umfangsrichtung schneidenfrei aufeinanderfolgen, dadurch gekennzeichnet, dass lediglich ein Paar an Führungsleisten (28A, B) ausgebildet ist und dass in den Grundkörper (16) umlaufend mehrere Zähne (18) eingearbeitet sind, die zumindest im Wesentlichen gleichverteilt über den Umfang angeordnet sind und zwischen denen jeweils eine Spannut (14) ausgebildet ist, wobei einige der Zähne (18) die Schneidleisten (20) und zwei der Zähne (18) die Führungsleisten (28A, B) tragen, wobei die Schneidleisten (20) und die Führungsleisten (28A, B) um den Umfang derart ungleich verteilt angeordnet sind, dass im Betrieb eine resultierende Abdrängkraft (Fr) gegeben ist, die in eine Abdrängrichtung ...

Verbindungsmechanismus für ein Schneidwerkzeug

Rotierendes Schneidwerkzeug (10), das Folgendes umfasst:einen Fräser (14) mit allgemein zylindrischer Form, welcher um eine zentrale Längsachse (A) angeordnet ist, wobei der Fräser (14) ein erstes Ende mit einem genuteten Wirkabschnitt (16) und ein gegenüberliegendes zweites Ende mit einem darum angeordneten Außengewindeabschnitt (22) aufweist; undeinen Schaft (12) mit allgemein zylindrischer Form, welcher um die zentrale Längsachse (A) angeordnet ist, wobei der Schaft (12) einen in einem ersten Ende ausgebildeten eingelassenen Innengewindeabschnitt (32) aufweist,wobei der Außengewindeabschnitt (22) eine Anzahl von Gewindegängen (22a) aufweist, die in einer ersten Teilung (P) angeordnet sind, und der Innengewindeabschnitt (32) eine Anzahl von Gewindegängen (32a) aufweist, die in einer zweiten Teilung (P), welche von der ersten Teilung (P) verschieden ist, angeordnet sind,wobei der Unterschied zwischen der ersten Teilung (P) und der zweiten Teilung (P) im Bereich von etwa 0,002 bis etwa ...

Spannvorrichtung

Spannvorrichtung für ein Bohrwerkzeug (1), mit beidendseitig jeweils einer Bohrspitze (1a, 1b), mit einer zwei Halbschalen (2a, 2b) aufweisenden Spannhülse (2), dadurch gekennzeichnet, dass die beiden Halbschalen (2a, 2b) um eine Schwenkachse (6) gegeneinander verschwenkbar und im Bereich der Schwenkachse (6) über eine elastische Verbindung (9) miteinander verbunden sind.

DRILL

A drill bit with at least two cutting edges (7, 8) and each with an at least partially spiraled flute (9, 10) extending from them to a shaft end (6) comprises a coolant channel (13, 14) extending from a shaft end (6) and running parallel to the tool axis (A), whose outlet openings (15, 16) are arranged in the flute (9, 10) and oriented toward the cutting edge (7, 8).

TWIST DRILL

A twist drill (1), in particular for machining wrought aluminium alloys, has a drill shaft (2) and a cutting part (3) that extends to a drill point (6), spiral chucking grooves (4) extending along the cutting part (3), forming a drill core (15), the thickness (D k) of the core at the drill point (6) being equal to (15 ~ 3) % of the drill diameter (D), the drill diameter (D) and/or core thickness (D k) diminishing from the drill point (6) to the shaft (2), the twist drill having a primary clearance angle ($g(a)1) equal to (19 ~ 3).degree. and a secondary clearance angle ($g(a)2) equal to (26 ~ 4).degree..

DRILL BIT AND METHOD FOR GRINDING A DRILL BIT

The invention relates to a drill bit (2), having main cutting edges (4a, 4b) which are connected together by a transversal cutting edge (6). An open surface (7) which extends into a flute (8) lies adjacent to each main cutting edge. The drill bit (2) is ground, in particular, during a continuous three-dimensional grinding process in such a way that the open surface (7) forms a continuous curved surface which follows a radius of curvature (R) running from the main cutting edge (4a) in the direction of the flute (8). The continuous grinding process, in comparison to a conventional two- stage process, produces an improved drill bit geometry which is devoid of ridges (16). The ridge-free configuration reduces the mechanical stress during drilling to a minimum.

HYDRAULIC EXPANSION CHUCK

The invention relates to a hydraulic expansion chuck (1) which has a particularly advantageous long, narrow design. The tool end (3) of the expansion chuck (1) is equipped with an expansion bushing (1) that is surrounded by a pressure chamber (12) which can be radially deformed in order to clamp a tool by means of a hydraulic fluid (F) that is contained in said pressure chamber (12). A pressure generation unit (14) is situated at an axial distance from the expansion bushing (10) and a pressure conduction system (13) is provided to transfer pressure from the pressure generation unit (14) to the pressure chamber (12), said pressure conduction system being formed by an annular gap (11) that is concentric with the chuck axis (2).

CERAMIC AND PROCESS FOR THE CONTINUOUS SINTERING THEREOF

A continuous process for the manufacture of a ceramic sintered comopact wherein the process comprises the steps of: forming a green compact from a powder mixture comprising a first component comprising compounds which contain elements of silicon, aluminum, oxygen and nitrogen; and the powder mixture further comprising a second component comprising a compound of at least one element selected from the group consisting of yttrium, scandium, cerium, lanthanum and the metals of the lanthanide series, and the second component comprising between 0.1 and 10 weight percent of the powder mixture; heat treating the green compact wherein the heat treatment comprises continously passing the green compact through at least one heating zone so as to produce a sintered compact.

GRADED COMPOSITE HARDMETALS

A multiple-region hardmetal tool piece (10). The tool piece includes a hardmetal body (12) including a hard particle component and a binder; an additional body, the additional body including a hardmetal body (14) having a hard particle component and a binder; a metal body or a ceramic body; a substantially discontinuous gradient-free boundary layer between the hardmetal body and the additional body; and a mating surface (16) between the hardmetal body and the additional body. In the preferred embodiment, the hard particle components are a carbide, such as tungsten carbide. In the preferred embodiment, the mating surface (16) includes a male portion (20) on one of the bodies and a corresponding female portion (22) on the other of the bodies. The mating surface (16) is symmetrical or asymmetrical and, in the preferred embodiment, the mating surface is axially symmetrical, such as a dimple. The mating surface may further include both micro and macro mating features.

ADJUSTMENT DEVICE FOR SELF-COLLETING DRILL MOTORS

An adjustment device comprises a first portion and a second portion. The first and second portions are adjustably engaging one another. The adjustment device has an overall length that is adapted to be adjusted by adjusting the first and second portions relative to one another. The overall length is adapted to be adjusted to vary a distance between the drill motor and the work piece. Another embodiment of the invention comprises a slip fit member and a threaded member opposite the slip fit member. The adjustment device has an overall length that is adjustable to vary a spatial relation between the drill motor and work piece. Yet another embodiment of the invention comprises a drill motor, a support, and an adjustment device. The adjustment device comprises a slip fit member and a threaded member spaced apart from the slip fit member. One of the members is engageable with the drill motor and the other member is engageable with the support. The adjustment device has an overall length that ...

SINTERED CEMENTED CARBIDE BODY COATED WITH THREE LAYERS

TITLE OF THE INVENTION SINTERED CEMENTED CARBIDE BODY COATED WITH THREE LAYERS A triple coated cemented hard metal carbide product in which a cemented metal carbide substrate is coated with, first, a metal carbide coating, then, a metal carbo-nitride and, finally, a metal nitride coating so as to take advantage of the metal carbide and metal nitride properties in order to protect the cemented metal carbide substrate from corrosive atmospheres and abrasion due to frictional wear.

MILLING CUTTER

TITLE OF THE INVENTION MILLING CUTTER A milling cutter is disclosed that comprises a rotatable adapter plate having a central protrusion on one side of the plate. A cutter ring, having recesses for mounting inserts therein, is provided with bayonet slots and a central opening so it can be fitted with and bolted to the adapter plate. The central protrusion is tapered and a conical grind is put on one of the mating surfaces between the adapter and the cutter plate to aid in disassembly after use of the milling cutter.

DOWN-THE-HOLE HAMMER

TITLE OF THE INVENTION DOWN-THE-HOLE HAMMER A down-the-hole hammer of the type adapted for receiving a bit at the lower end and for being connected to the lower end of a drill string through which compressed air is supplied to the hammer. The supply of air to the hammer when the bit at the lower end is resting on the bottom of the hole causes a piston in the hammer to reciprocate and to beat upon the upper end of the bit so that the material at the bottom of a hole is reduced. The piston, by reciprocating in the hammer, accomplishes the valving of the fluid which causes the piston to reciprocate, and when the hammer is lifted from the bottom of the hole and the bit moves downwardly, the piston ceases reciprocation while air blows off through the bit to the bottom thereof to clear debris from the hole being drilled.

INDICATOR DEVICE FOR INDICATING TREAD WEAR AND TIRE INCORPORATING THE INDICATOR

A tread depth indicator for a vehicle tire consisting of a rod-like body having a head on one end and imbedded head end foremost into a blind hole in the tire tread with the outer end of the body substantially flush with the surface of the tire tread. The body of the indicator wears off at not less than the same rate as the tire tread when the tire rolls on a roadway and there is an outwardly facing region in the indicator located at about the maximum desired depth for the tread to wear down which provides an indication when the tread wears down to that depth. Advantageously, the body has a short pin of hard wear resistant material, such as cemented hard metal carbide material therein at the head end with the radially outer end of the pin forming the aforementioned region. The indication given by the indicator when the tread wears down to the aforementioned level is both visible by observation of the tire and is audible when the tire rolls on a roadway. Advantageously, the indicating means ...

CLAMPING MECHANISM FOR CUTTING INSERT

TITLE OF THE INVENTION CLAMPING MECHANISM FOR CUTTING INSERT A toolholder for holding a cutting insert having an axial hole is disclosed having a pocket therein for seating of the insert and a hole in the toolholder extending transversely through the bottom of the pocket. A pin having a head for engaging the insert and a pivotal shoe member cooperate in the hole such that, as the rotatable pin is tightened, the shoe member forces the head of the pin to tilt toward a side wall of the pocket and clamp the insert to the toolholder.

EXCAVATION AND ROAD MAINTENANCE BITS AND BLOCKS

TITLE OF THE INVENTION EXCAVATION AND ROAD MAINTENANCE BITS AND BLOCKS A bit and block are disclosed wherein the bit has a flat bar-like forward working portion and a shank rearwardly of said forward working portion. The shank, when viewed in cross section, has a noncircular shape so that, when placed in a support block having a bore of similar size and shape, the bit will not rotate in the block. An expansible clip is used at the rear end of the bit, behind the shank portion, to hold the bit in the block.

MEANS FOR HOLDING CUTTER BITS

MEANS FOR HOLDING CUTTER BITS Devices for holding mining and road maintenance cutter bits, wherein said devices for holding comprise a cutter bit support block, a clevis and a support block locking mechanism whose geometries have been adapted such that the cutter bit support block can be fixedly and rigidly held in a channel in the clevis by the support block locking mechanism, which has a locking bolt. The support block locking mechanism and the clevis have means for interacting and cooperating such that each abuts with, and applies a downward pressure to, a lower body portion of the support block and thereby drives downward facing longitudinal shoulders on the support block into abutment under pressure with upward facing abutment shoulders of two longitudinal walls forming the channel in the clevis.

CORROSION-RESISTANT ALLOY

CUTTING INSERT WITH ELLIPTICAL CUTTING EDGE

A cutting Insert (30) comprises an elliptical cutting edge (38). The cutting insert (30) has a mounting hole (48) through which a retention screw (32) may pass, wherein the retention screw makes contact with the mounting hole in a seating plane that is perpendicular to the mounting hole. The cutting insert (30) is adapted for use in a cutting tool (10) comprising a tool body (12) having a pocket (26) partially defined by a floor that is parallel to a seating plane. The insert (30) can have a shape complimentary to a tool body (12) so as to cooperate with the tool body to form a continuous flute (37). According to one embodiment of the invention, the insert (30) has a flank edge inboard with respect to the tool body. An insert (30) according to another embodiment of the invention has a rake face (42) with a positive cutting geometry.

CUTTING INSERT

The design is the features of shape, configuration, pattern and ornament of the CUTTING INSERT as shown in the drawings.Drawings of the design are included wherein:Figure 1 is an isometric view of a cutting insert;Figure 2 is a top view thereof;Figure 3 is a bottom view thereof;Figure 4 is a front view thereof;Figure 5 is a back view thereof;Figure 6 is a right side view thereof;Figure 7 is a left side view thereof;Figure 8 is an isometric view of a variant of the cutting insert;Figure 9 is a top view thereof;Figure 10 is a bottom view thereof;Figure 11 is a front view thereof;Figure 12 is a back view thereof;Figure 13 is a right side view thereof; andFigure 14 is a left side view thereof.

BODY COATED WITH HARD MATERIAL

The invention relates to a body which is coated with hard material and has a plurality of layers applied by means of CVD, wherein the outer layer comprises Ti1-x Al x N, Ti1x-Al x C and/or Ti1-x Al x CN where 0.65 <= x <= 0.9, preferably 0.7 <= x <= 0.9, and this outer layer has compressive stresses in the range from 100 to 1100 MPa, preferably from 400 to 800 MPa, and a TiCN or Al2O3 layer is arranged under this outer layer.

Modular drill with defined side support

A rotary cutting tool has a shank and an interchangeable cutting tip which can be coupled to the shank. The shank has a locking geometry having an undercut into which a locking projection of the cutting tip projects. Numerous lateral supporting surfaces and supporting counter-surfaces are provided for laterally fixing the cutting tip in the shank.

TiAIN COATINGS FOR GLASS MOLDING DIES AND TOOLING

A system for precision glass molding comprising a substrate and a coating. The substrate has less than 1.2 wt. % minor constituents. The coating comprises TiAlN, wherein x is about 0.7-1.5 and y is about 2.0-3.0. The coating is applied on at least a portion of the substrate. 1. A coating composition comprising TiAlN , wherein x is about 0.7-1.5 and y is about 2.2-3.0.2. The coating composition according to claim 1 , wherein x is about 0.8-1.2.3. The coating composition according to claim 1 , wherein y is about 2.2-2.7.4. A substrate coated with the coating composition of .5. The substrate according to claim 4 , having a coating thickness of less than about 1.0 μm.6. A system for precision glass molding claim 4 , comprising:a substrate; and{'sub': x', 'y, 'a coating on at least a portion thereon, wherein the coating comprises TiAlN, wherein x is about 0.7-1.5 and y is about 2.0-3.0.'}7. The system according to claim 6 , wherein x is about 0.8-1.2.8. The system according to claim 6 , wherein y is about 2.2-2.7.9. The system according to claim 6 , wherein the substrate has a coating thickness of less than about 1.0 μm.10. The system according to claim 9 , wherein the coating thickness is about 0.5 μm.11. The system according to claim 6 , wherein the surface roughness (RMS) of the coated substrate is about less than about 5 nm.12. The system according to claim 6 , wherein the coated substrate has a profile accuracy of less than about 0.5 μm.13. The system according to claim 6 , wherein the substrate comprises tungsten carbide claim 6 , tungsten or a combination thereof having less than 1.2% minor constituents.14. The system according to claim 13 , wherein the minor constituents comprise at least one of cobalt claim 13 , chromium or nickel.15. The system according to claim 6 , wherein the substrate comprises monotungsten carbide having less than 1.2 wt. % minor constituents.16. A method comprising:{'sub': x', 'y, 'applying a coating to a substrate, wherein the substrate ...

METHOD AND APPARATUS USING A SPLIT CASE DIE TO PRESS A PART AND THE PART PRODUCED THEREFROM

A split case die is used to press powder, wherein the die parts are moveable in a direction non-parallel to the direction of the pressing axis. The part produced by such a split case die has an external surface with parting line marks oriented in a direction non-perpendicular to the pressing axis. 1. A cutting insert comprised of a sintered green part having a top surface and a bottom surface with side walls therebetween and , wherein at least two opposing side walls are symmetric about a longitudinal axis and , wherein the at least two opposing side walls each have restrictions extending therein , wherein the part further includes parting line marks extending from the top surface to the bottom surface , wherein the parting line marks are from die segments during a powder pressing operation used to fabricate the insert.2. The cutting insert according to claim 1 , wherein the restrictions formed in the at least two opposing side walls are comprised of segments with two angled portions claim 1 , wherein a first angled portion forms a positive angle Y with the longitudinal axis and a second angled portion forms a negative angle Z claim 1 , which together define a restriction within each of the at least two side walls.3. The cutting insert according to claim 2 , wherein a spacer portion exists between the two angled portions.4. The cutting insert according to claim 3 , wherein the spacer portion is straight.5. The cutting insert according to claim 4 , wherein the spacer portion is parallel to the longitudinal axis.6. The cutting insert according to claim 1 , wherein restrictions formed in the at least two opposing side walls have a concave surface.7. The cutting insert according to claim 6 , wherein the concave surfaces are curved.8. The cutting insert according to claim 7 , wherein the concave surfaces have at least one point between the ends of each concave surface that is tangent to the longitudinal axis.9. The cutting insert according to claim 1 , wherein the ...

Carbide Pellets for Wear Resistant Applications

Carbide pellets including relatively small amounts of metallic binder are produced by steps of pressing, comminuting, shaping and sintering. The carbide pellets may be used as wear resistant hard facing materials that are applied to various types of tools. The carbide pellets provide improved mechanical properties such as hardness and abrasiveness while maintaining required levels of toughness and strength. 1. A method for forming carbide pellets comprising:pressing a mixture comprising carbide powder particles and less than 3 weight percent metallic binder powder particles to form a green compact;comminuting the formed green compact to form faceted granules comprising the carbide and metallic binder powder particles;shaping the faceted granules to form substantially spherical shaped green pellets comprising the carbide and the metallic binder powder particles; andsintering the substantially spherical shaped green pellets to form dense substantially spherical sintered carbide pellets containing less than 3 weight percent of the metallic binder.2. The method of claim 1 , wherein the metallic binder is present in an amount of from about 0.01 to about 2.9 weight percent.3. The method of claim 1 , wherein the metallic binder is present in an amount of from about 0.5 to about 2.5 weight percent.4. The method of claim 1 , wherein the metallic binder is present in an amount of about 2 weight percent.5. The method of claim 1 , wherein the metallic binder comprises cobalt claim 1 , iron claim 1 , nickel claim 1 , steel or a combination thereof.6. The method of claim 1 , wherein the metallic binder comprises cobalt.7. The method of claim 1 , wherein the carbide comprises tungsten carbide claim 1 , di-tungsten carbide claim 1 , titanium carbide claim 1 , tantalum carbide claim 1 , chromium carbide claim 1 , vanadium carbide or a combination thereof.8. The method of claim 1 , wherein the carbide comprises tungsten carbide.9. The method of claim 1 , wherein the faceted granules ...

Composite Component and Method for the Production Thereof

The invention relates to a composite component () having a carrier () made of powder metal and a wear-resistant body () which is made of cemented carbide and is embedded at least in certain portions in the carrier (), wherein the cemented carbide body () is metalized at least in certain portions. The invention also relates to a method for producing such a composite component. 1. A composite component having a carrier comprising powder metal and a wear-resistant body comprising cemented carbide and embedded at least in certain portions in the carrier , wherein the wear-resistant body is metalized at least in certain portions.2. The composite component as claimed in claim 1 , wherein the metalization comprises nickel.3. The composite component as claimed in claim 1 , wherein the metalization comprises copper.4. The composite component as claimed in claim 1 , wherein the metalization comprises chromium.5. The composite component as claimed in claim 1 , wherein the wear-resistant body comprises WC with a binder proportion of Co claim 1 , NiCr claim 1 , CoNiFe or CoNiCr.6. The composite component as claimed in claim 1 , wherein the carrier comprises an alloyed high-quality structural steel.7. The composite component as claimed in claim 1 , wherein the composite component is in the form of a composite roll for the production of steel.8. A method for producing a composite component comprising the following steps:providing a wear-resistant body comprising cemented carbide;providing a thin metal layer on the wear-resistant body;embedding the wear-resistant body in metal powder; andsubjecting the metal powder to hot isostatic pressing together with the wear-resistant body.9. The method as claimed in claim 8 , wherein the wear-resistant body is coated by electrodeposition.10. The method as claimed in claim 8 , wherein the wear-resistant body is coated on all sides.11. The method as claimed in claim 8 , wherein the thickness of the metal layer is between 10 μm and 5 mm.12. The ...

Milling Tool Assembly Having a Replaceable Cutter

A milling tool assembly has a replaceable cutter and a reusable shank connected to the cutter with a detachable joint. The joint may be, for example, a threaded connection. An intermediate alignment sleeve made of an elastic or semi-elastic material, is positioned between the cutter and the shank about the axis of rotation of the shank. 1. A milling tool assembly having a replaceable cutter and a reusable shank coupled via a detachable joint , said detachable joint comprising tightening means and an at least partially elastic , energy absorbing , intermediate alignment sleeve positioned between the cutter and the shank concentric with an axis of rotation of the tool.2. The assembly according to claim 1 , wherein said intermediate alignment sleeve is a plain sleeve operative only in a radial direction.3. The assembly according to claim 1 , wherein said intermediate alignment sleeve is a flanged sleeve operative in both radial and axial directions.4. The assembly according to claim 1 , wherein the tightening means is chosen from the group of: simple thread claim 1 , multi start thread claim 1 , bayonet half turn joint claim 1 , pneumatic tensioner claim 1 , hydraulic tensioner.5. The assembly according to claim 1 , wherein the cutter is chosen from the group of: end mill claim 1 , face mill claim 1 , rounded tip mill claim 1 , slitting mill claim 1 , drill and reamer.6. The assembly according to claim 1 , wherein the cutter further includes an active fluted portion adjoining a short cylindrical portion claim 1 , said short cylindrical portion being equipped with at least two opposing parallel flats dimensioned for engaging a standard spanner.7. The assembly according to claim 1 , wherein the detachable joint further comprises:an alignment bore in the shank concentric to the axis of rotation having an axial stop surface perpendicular to the axis of rotation and a threaded bore toward a rear portion of the alignment bore, anda threaded tail outwardly protruding from an ...

CLAMPING AND RELEASING ASSEMBLY

A clamping and releasing mechanism includes a clamping and releasing assembly and a control member configured for effecting operation of the assembly. The assembly includes a collet, a biasing member, a rod member, and a retainer affixed to the rod member such that movement of the rod member relative to the collet causes a variation in the biasing force exerted by the biasing member. When the control member is moved in a first direction, the control member causes the rod member to move in a first direction relative to the collet and move the first part away from the second part. When the control member is moved in an opposite direction, the biasing member causes the rod member to move in an opposite direction and move the first part toward the second part. The mechanism is made of a few simple components, requires little maintenance and is self-contained. 1. A clamping and releasing mechanism , comprising:a clamping and releasing assembly comprising a collet; a rod member at least partially disposed within a passageway of the collet and configured for relative movement therewith; a retainer affixed to the rod member; and a biasing member disposed between the retainer and the collet and exerting a biasing force against the retainer and the collet, wherein movement of the rod member relative to the collet causes a variation in the biasing force exerted by the biasing member; anda control member configured for exerting a biasing force against the rod member,wherein the rod member moves in a first direction relative to the collet when the biasing force exerted by the control member is greater than the biasing force exerted by the biasing member to cause the rod member to engage the second part, thereby causing a first part to move away from a second part; andwherein the rod member moves in a second, opposite direction relative to the collet when the biasing force exerted by the control member is less than the biasing force exerted by the biasing member to cause the ...

INDEXABLE CUTTING INSERT FOR A SIDE MILLING CUTTER

An indexable cutting insert () for a side milling cutter () includes two insert surfaces facing away from each other. Both insert surfaces include a relief-like profile (). 1. An indexable cutting insert for a side milling cutter having two insert surfaces facing away from each other , wherein both insert surfaces include a relief-like profile.2. The indexable cutting insert as claimed in claim 1 , wherein the relief-like profile comprises a plurality of parallel gripping strips with a trapezoidal cross-section protruding from the insert surfaces.3. The indexable cutting insert as claimed in claim 1 , wherein the relief-like profile comprises truncated pyramids arranged in a chess board pattern on the insert surfaces.47. The indexable cutting insert as claimed in claim 2 , further comprising a V-shaped recess between two adjacent gripping strips ().5. The indexable cutting insert as claimed in one of claim 1 , wherein an end face of the relief-like profile forms a level surface.6. An insert seat for an indexable cutting insert having a guide surface that abuts an insert surface of the indexable cutting insert claim 1 , wherein the guide surface includes a counter profile that engages relief-like profile of the insert surface.7. The insert seat as claimed in claim 6 , wherein the counter profile comprises several parallel-extending claim 6 , V-shaped tooth strips.8. The insert seat as claimed in claim 6 , further comprising two indexable cutting inserts arranged in such a way{'b': '14', 'that the counter profiles () of the guide surfaces are facing each other,'}that in each case one indexable cutting insert abuts against each guide surface andthat a double clamping wedge is inserted between the indexable cutting inserts to fix the indexable cutting inserts by way of two clamping surfaces facing away from each other.9. The insert seat as claimed in claim 6 , further comprising a plurality of indexable cutting inserts arranged axially offset with respect to each other. ...

Dust Collecting Device For A Roof Tool

A dust collecting device disposed circumferentially around a roof tool and in association with a roof drill bit and slidable thereon for collecting and removing dust generated during a dry drilling operation. The dust collecting device comprises a cylinder member, a bushing, and a mounting assembly comprising a top washer, a rubber insert, and a bottom washer. Another aspect of the invention provides a dust collecting device comprising a cylinder member, a bushing, and a mounting assembly comprising a disk and clips. The rubber insert and the clips resist movement of the dust collecting device along the drill steel of the roof tool during the drilling operation. 1. A roof tool , comprising:a drill steel;a roof drill bit connected to the drill steel; anda dust collecting device circumferentially disposed on the drill steel and the roof drill bit constructed and arranged to collect and remove dust from the environment when drilling a bolt bore hole.2. The roof tool of claim 1 , wherein the dust collecting device comprises:a cylinder member;a bushing; anda mounting assembly for mounting the dust collecting device on the drill steel and the roof drill bit.3. The roof tool of claim 2 , wherein the mounting assembly comprises a rubber insert constructed and arranged to allow but resist movement of the dust collecting device along the drill steel when drilling a bolt bore hole.4. The roof tool of claim 3 , wherein the mounting assembly further comprises at least two washers; and wherein the rubber insert is located between the at least two washers.5. The roof tool of claim 2 , wherein the mounting assembly comprises:at least one clip constructed and arranged to allow but resist movement of the dust collecting device along the drill steel during the drilling of a bolt bore hole.6. The roof tool of claim 2 , wherein the roof drill bit comprises at least one vacuum port.7. The roof tool of claim 2 , wherein the cylinder member comprises at least one aperture for drawing in ...

CUTTING TOOL WITH UNEQUAL FLUTE SPACING

A cutting tool having a shaft with a longitudinal axis, wherein the cutting tool includes a first flute extending about the longitudinal shaft along a helix angle and a first cutting edge adjacent the first flute. The cutting tool also includes a second flute extending about the longitudinal shaft along a helix angle and a second cutting edge adjacent a second flute. The cutting tool further includes a third flute extending about the longitudinal shaft along a helix angle and a third cutting edge adjacent the third flute. The first cutting edge, the second cutting edge, and the third cutting edge are unequally angularly spaced from each other. 1. A cutting tool having a shaft with a longitudinal axis , the cutting tool comprising:a first flute extending about the longitudinal shaft along a helix angle;a first cutting edge adjacent the first flute;a second flute extending about the longitudinal shaft along a helix angle;a second cutting edge adjacent the second flute;a third flute extending about the longitudinal shaft along a helix angle;a third cutting edge adjacent the third flute;wherein the first cutting edge, the second cutting edge and the third cutting edge are unequally angularly spaced from each other.2. The cutting tool of claim 1 , wherein the first cutting edge is angularly spaced from the second cutting edge an angle in the range of about 100 degrees to about 115 degrees.3. The cutting tool of claim 1 , wherein the second cutting edge is angularly spaced from the third cutting edge an angle in the range of about 110 degrees to about 125 degrees.4. The cutting tool of claim 1 , wherein the third cutting edge is angularly spaced from the first cutting edge an angle in the range of about 125 degrees to about 140 degrees.5. The cutting tool of claim 1 , further comprising a first land adjacent to the first flute and extending about the longitudinal axis of the shaft along the helix angle claim 1 , wherein the first land has a first margin.6. The cutting ...

CONTOUR END MILL

A contour end mill includes a shank portion and a cutting portion. The cutting portion defines a cutting diameter, a corner radius and a major radius. The major radius is greater than one-half of the cutting diameter. As a result, the end mill produces a much smoother finish and a reduced chip thickness. 1. A contour end mill , comprising:a shank portion; anda cutting portion defining a cutting diameter, a corner radius and a major radius,wherein the major radius is greater than one-half of the cutting diameter.2. The end mill of claim 1 , wherein the corner radius is leas than one-half of the cutting diameter.3. The end mill of claim 1 , wherein the cutting portion further includes a plurality of flutes defining a core diameter claim 1 , a radial rake angle claim 1 , a rake check point claim 1 , a radial primary angle claim 1 , and a radial secondary angle.4. The end mill of claim 1 , wherein the cutting portion further includes a primary relief claim 1 , a secondary relief claim 1 , a helical axial rake gash claim 1 , and a heel relief.5. The end mill of claim 4 , wherein a cutting edge is formed at an intersection between the helical axial rake gash and the primary relief.6. The end mill of claim 4 , wherein the helical axial rake gash is offset from a central claim 4 , longitudinal axis of the end mill.7. The end mill of claim 4 , wherein the helical axial rake gash is formed at a gash angle with respect to a central claim 4 , longitudinal axis of the end mill.8. The end mill of claim 1 , wherein the cutting portion further includes a center web having a non-zero thickness.9. A contour end mill claim 1 , comprising:a shank portion; anda cutting portion defining a cutting diameter, a corner radius and a major radius, the cutting portion further including a plurality of flutes defining a core diameter, a radial rake angle, a rake check point, a radial primary angle, a radial secondary angle, a primary relief, a secondary relief, a helical axial rake gash, a heel ...

Cemented Carbide Compositions Having Cobalt-Silicon Alloy Binder

Cemented carbide compositions consisting essentially of tungsten carbide particles and a cobalt-silicon alloy binder are disclosed. Also disclosed are methods of making the cemented carbide compositions and articles which incorporate the cemented carbide compositions. Pellets having the cemented carbide compositions may be used in the uncrushed or crushed form. The cemented carbide compositions may also be used as metal cutting tool inserts, road construction tool inserts, oil or gas drill inserts, mining tool inserts, and as substrates for ultrahard materials, such as PCD, PCBN, and TSP. 1. A cemented carbide composition of matter consisting essentially of tungsten carbide particles and a cobalt-silicon alloy binder , wherein the silicon content of the cobalt-silicon alloy binder is in the range of from about 1 to about 21 weight percent , and the amount of the cobalt-silicon alloy binder is in the range of from about 1 to about 40 weight percent of the composition.2. The cemented carbide composition of claim 1 , wherein the amount of the cobalt-silicon alloy binder is in the range of about 3 to about 30 weight percent of the composition.3. The cemented carbide composition of claim 1 , wherein the tungsten carbide particles have an average particle size in the range of from about 0.2 to about 12 microns.4. The cemented carbide composition of claim 1 , wherein the silicon content in the cobalt-silicon alloy binder is in the range of from about 2 to about 13 weight percent.5. A method for making a cemented carbide article comprising the steps of:a) providing a milled powder consisting essentially of tungsten carbide, cobalt, and silicon and a pressing aid;b) pressing the milled powder to form a compact; andc) liquid phase sintering the compact to form the article;wherein the amount of the silicon is in the range of from about 1 to about 21 percent of the combined weight of the silicon and the cobalt.6. The method of claim 5 , further comprising the step of milling ...

RETAINER FOR ROTATABLE CUTTING BIT

A retainer for mounting and retaining a rotatable cutting tool or bit in a block bore. The cutting tool contains an annular channel. The retainer has an unstressed diameter greater than the diameter of the bore so that when the cutting tool is inserted into the bore, the retainer expands against the bore so as to be held therein along with the cutting tool. The retainer comprises a cylindrical sleeve having an engaging member extending circumferentially around the sleeve and having a constant cross section shape which projects into the annular channel of the cutting tool and which annular channel has an inward rectangular surface corresponding to the inward engaging member of the retainer for receiving and retaining the retainer to the cutting tool. 1. A cutting tool for mounting in the bore of a block , the cutting tool , comprising:an elongated body generally symmetrical about a longitudinal axis having forward and rearward portions, the forward portion terminating in a front end at which there is a cutting tip, the rearward portion being of a generally constant diameter and terminating in a rear end;the rearward portion containing an annular channel adjacent the rear end;a resilient retainer surrounding substantially the rearward portion, the retainer comprising a cylindrical sleeve being axially split along the entire length thereof, the sleeve having opposite front and rear ends, and having an inward engaging member received within the annular channel so that the elongated body and retainer are retained together; andwherein the inward engaging member of the resilient retainer comprises a constant cross sectional shape extending circumferentially around the cylindrical sleeve.2. The cutting tool of claim 1 , wherein the annular channel has generally the same cross sectional shape as the inward engaging member.3. The cutting tool of claim 1 , wherein the inward engaging member has a generally rectangular cross sectional shape.4. The cutting tool of claim 3 , ...

COMBINATION END MILLING/DRILLING/REAMING CUTTING TOOL

A combination end milling/drilling/reaming cutting tool includes an end milling portion, a drilling portion, and a reaming portion. The cutting tool also includes a neck portion between the end milling portion and the drilling portion, and a clearance neck portion between a shank and the reaming portion. A method of machining a workpiece using the combination end milling/drilling/reaming cutting tool is also disclosed. 1. A combination end milling/drilling/reaming cutting tool comprising:an end milling portion;a reaming portion; anda drilling portion between the end milling portion and the reaming portion.2. The combination cutting tool of claim 1 , wherein the end milling portion has a first diameter claim 1 , the drilling portion has a second diameter larger than the first diameter claim 1 , and the reaming portion has a third diameter that is larger than the second diameter.3. The combination cutting tool of claim 1 , further comprising a neck portion between the end milling portion and the drilling portion claim 1 , and a clearance neck portion between the reaming portion and a shank.4. The combination cutting of claim 3 , wherein the neck portion has a diameter smaller than a diameter of the clearance neck portion.5. The combination cutting tool of claim 3 , further comprising a tapered surface between the neck portion and the drilling portion and a tapered surface between the reaming portion and the clearance neck portion.6. The combination cutting tool of claim 1 , further comprising a tapered surface between the drilling portion and the reaming portion.7. The combination cutting tool of claim 1 , wherein the end milling portion claim 1 , the drilling portion and the reaming portion include a plurality of spiral cutting flutes.8. The combination cutting tool of claim 7 , wherein the plurality of cutting flutes in the end milling portion are formed at a first angle with respect to a longitudinal axis of the cutting tool.9. The combination cutting tool of claim ...

METAL CUTTING SYSTEM FOR EFFECTIVE COOLANT DELIVERY

A metal cutting system with a tool holder, a shim, an insert with a top depression, a top piece and a clamp. A rake face cooling channel for fluid delivery is formed between the top piece and the depression in the insert. A primary discharge slot at the end of the rake face cooling channel delivers fluid from below the cutting edge of the insert. A second cooling channel for delivery of fluid to the flank face is formed between the insert and the shim or is formed between the shim and the tool holder with a portion of the cooling channel passing through the shim. 1. A metal cutting system comprising:a tool holder having a recess and a coolant passage for delivery of fluids, a shim comprising a bottom side abutting the tool holder in the recess, a top side opposite the bottom side and a shim orifice aligned with the coolant passage and spanning from the bottom side to the top side,an insert having a rake face having an insert depression lower than the remainder of the rake face, at least one cutting edge, an insert bottom face, at least one flank face being chamfered, at least one flank edge being chamfered in the same direction as the flank face, and an insert orifice spanning from the insert bottom face to the rake face, the insert bottom face being superposed on top side of the shim,a flank face cooling channel initially formed between the shim and the tool holder and partially running through the shim, whereby the flank face cooling channel terminates with a secondary discharge hole directed at the cutting edge or flank face and wherein the flank face cooling channel is in communication with the coolant passage of the tool holder to deliver fluid to the flank face;a top piece including a clamp side and an insert side congruently shaped to fit in the insert depression and cooperatively forming a cooling channel between the top piece and insert depression for delivery of fluid to a cutting corner or a cutting edge, wherein the cooling channel is in communication ...

MILLING CUTTING INSERT

The invention relates to a milling cutting insert having a square or triangular shaped cutting face delimited in the plan view by a peripheral cutting edge having linear cutting edges () and curved cutting corners (). According to the invention, each of the cutting edges () comprises an inclined region () sloping toward a cutting corner (), extending beyond the tangential point () determined by the point at which the linear cutting edge () transitions into a curved cutting corner (), wherein adjacent thereto the cutting edge () rises prior to the point () determined by a cutting corner angle bisector (), wherein said rising region () extends to a cutting edge maximum () on the other side of the cutting corner () on the adjacent cutting edge (), which is linear in plan view, from where the cutting edge () continues, again inclined and sloping downward, resulting in a rotationally symmetric form having identically shaped cutting edges. 112-. (canceled)13. A cutting insert , comprising:a top surface and a plurality of side surfaces;a plurality of cutting edges; a first cutting edge formed at an intersection between the top surface and a first side surface, the first cutting edge merging into a curved cutting corner at a first tangential point; anda second cutting edge formed at an intersection between the top surface and a second side surface, the second cutting edge merging into the curved cutting corner at a second tangential point,wherein each cutting edge includes a sloping region and a rising region, andwherein the sloping region linearly increases in height along the first side surface towards the curved cutting corner to a maximum point extending beyond the first tangential point of the first side surface, andwherein the rising region extends from a minimum point located between the second tangential point of the second side surface and an angle bisector of the curved cutting corner to the maximum point of the first cutting edge, thereby resulting in a cutting ...

TWO PIECE TOOL HOLDER ASSEMBLY

A tool holder assembly on a rotating unit, e.g. drum of an earth strata cutting assembly, includes a base mountable to the rotating unit and a removable member mounted to the base and having a support block for carrying an earth strata cutting tool. The base includes an upright member. In one aspect, the removable member substantially encloses the upright member and the removable member includes a V-shaped surface engaging a V-shaped surface of the upright member for a close tolerance fit. In another aspect, the removable member partially encloses the upright member and the removable member includes a circular surface engaging a circular surface of the upright member for a close tolerance fit. 1. A tool holder assembly for carrying a cutting tool on a rotating unit of an cutting assembly , comprising:a base fixedly mountable to the rotating unit, wherein the base comprises an upright member and a planar member supporting the upright member; anda removable member mounted on the base and including a support block constructed and arranged to carry the cutting tool, wherein the removable member is constructed and arranged to substantially enclose the upright member and abut against the planar member of the base.2. The tool holder assembly of claim 1 , wherein the upright member of the base comprises a tapered upper surface and the removable member comprises a corresponding tapered surface adjacent the tapered upper surface of the upright member.3. The tool holder assembly of claim 2 , wherein the upright member and the removable member are constructed and arranged to be secured together through a close tolerance fit.4. The tool holder assembly of claim 3 , further comprising a retaining element extending through the removable member and the upright member of the base for removably connecting the removable member to the base.5. The tool holder assembly of claim 2 , wherein at least the removable member comprises a wedge-like body angularly supporting the support block at ...

METHOD AND DEVICE FOR THE PRECISION MACHINING OF CRANKSHAFTS AND CAMSHAFTS

The invention relates to a method and a device for the precision machining of crankshafts or camshafts to final size tolerances R<10 μm, preferably ≦5 μm and concentricity tolerances ≦30 μM, preferably 6 μm. The crankshafts or camshafts has been machined by a cutting operation and at least partly subjected to hardening. According to the invention, after an initial cutting operation and subsequent hardening to 45 to 60 HRC, preferably 50 to 53 HRC, a final cutting operation is carried out using cutting inserts fitted with CBN or PCD inlets. The device used for this purpose has cutting inserts which are fitted with CBN or PCD inlets, wherein cutting inserts clamped in place laterally, radially and tangentially follow each other alternately. 1. A method for the precision machining of crankshafts or camshafts to final size tolerances R<10 μm , and concentricity tolerances ≦30 μm , which have been machined by a cutting operation and at least partly subjected to hardening ,wherein after an initial cutting operation and subsequent hardening to 45 to 60 HRC, a final cutting operation is carried out using cutting inserts fitted with CBN or PCD inlets.2. The method as claimed in claim 1 , wherein all the cutting operations are carried out dry claim 1 , i.e. without the use of cooling lubricants.3. The method as claimed in claim 1 , wherein the cutting operation is carried out by means of an external or internal milling cutter which has adjustable cutting inserts fitted with CBN or PCD inlets.4. A device for the precision machining of crankshafts or camshafts to final size tolerances R<10 μm claim 1 , and concentricity tolerances ≦30 μm claim 1 , which have been machined by a cutting operation and are at least partly subjected to hardening claim 1 , comprising radially or axially adjustable cutting inserts arranged on an internal or external milling cutter claim 1 ,wherein the cutting inserts are fitted with CBN or PCD inlets, and wherein cutting inserts are clamped in place ...

CORROSION AND WEAR-RESISTANT CLADDINGS

The present invention discloses corrosion and wear-resistant claddings comprising hard particles and an alloying addition dispersed in a nickel-based alloy matrix. The alloying addition comprises at least one of molybdenum or copper. The cladding does not include cobalt-bonded tungsten carbide particles. 1. An article comprising:a substrate; anda corrosion and wear-resistant cladding brazed on at least a portion of the substrate, wherein the cladding comprises hard particles and an alloying addition dispersed in a nickel-based alloy matrix, andwherein the alloying addition comprises at least one of molybdenum or copper.2. The article of claim 1 , wherein the hard particles comprise macro-crystalline tungsten carbide particles and non-macro-crystalline tungsten carbide particles.3. The article of claim 2 , wherein the cladding comprises from about 40 to 70% by weight macro-crystalline tungsten carbide particles of the total weight of the cladding.4. The article of claim 2 , wherein the non-macro-crystalline tungsten carbide particles are from about 2 to 5 μm in size.5. The article of claim 1 , wherein the cladding does not include cobalt-bonded tungsten carbide particles.6. The article of claim 1 , wherein the alloying addition is molybdenum and copper.7. The article of claim 1 , wherein the cladding comprises from about 2 to 4% by weight molybdenum of the total weight of the cladding.8. The article of claim 1 , wherein the cladding comprises from about 1 to 3% by weight copper of the total weight of the cladding.9. The article of claim 1 , wherein the cladding has a thickness from about 0.003 inches to about 0.100 inches.10. The article of claim 1 , wherein the substrate comprises carbon and alloy steels claim 1 , nickel claim 1 , stainless steel claim 1 , cobalt claim 1 , nickel-based alloys claim 1 , and cobalt-based alloys.11. A corrosion and wear-resistant cladding comprising hard particles and an alloying addition dispersed in a nickel-based alloy matrix claim ...

TOOLHOLDER WITH EXTERNALLY-MOUNTED DYNAMIC ABSORBER

A toolholder includes a body portion having an exterior surface and a dynamic absorber mounted on the exterior surface of the body portion. The dynamic absorber includes a rigid support member, a cover member, and an absorber mass disposed within a cavity formed by the rigid support member and the cover member. A first resilient support member is disposed between the rigid support member and the absorber mass, and a second resilient support member is disposed between the cover member and the absorber mass. The dynamic absorber is tuned by moving the cover member relative to the rigid support member. A method of suppressing vibrations of the toolholder includes externally mounting the dynamic absorber on the exterior surface of the toolholder. 1. A toolholder comprising:a body portion having an exterior surface; anda dynamic absorber mounted on the exterior surface of the body portion.2. The toolholder according to claim 1 , wherein the dynamic absorber includes a rigid support member claim 1 , a cover member claim 1 , and an absorber mass disposed within a cavity formed by the rigid support member and the cover member.3. The toolholder according to claim 2 , wherein the dynamic absorber further includes a first resilient support member disposed between the rigid support member and the absorber mass claim 2 , and a second resilient support member disposed between the cover member and the absorber mass.4. The toolholder according to claim 3 , wherein the rigid support member is configured to move relative to the cover member along a longitudinal axis of the toolholder.5. The toolholder according to claim 4 , wherein the cover member exerts pressure against the first resilient support and the absorber mass is urged against the second resilient support claim 4 , which is then urged against the rigid support member to provide compression of both the first resilient support and the second resilient support against the absorber mass as the cover member moves in a first ...

Cutting Tool for a Machine Tool

The invention relates to a cutting tool for a machine tool, comprising a cutting head (), a shaft (), and a coupling which removably fixes the cutting head () to the shaft (), said coupling comprising a coupling pin () on the back of the cutting head () and a receptacle () in the shaft (), which receptacle is complementary to the coupling pin () and accommodates the coupling pin () when the coupling is closed, comprising a central coolant channel () in the shaft (), which separates into two sub-channels () in the region of the receptacle (), the two sub-channels () flanking the receptacle () in the wall thereof and opening into the flat contact surface () annularly surrounding the opening edge () of the receptacle (), and comprising a flat collar () on the back of the cutting head () having an annular distribution groove (). The tool also comprises at least one coolant hole () connecting the cutting edges () on the cutting head () to the distribution groove (). 1. A cutting tool for a machine tool , comprising:a cutting head having a number of blades;a shank;a coupling which detachably fixes the cutting head to the shank, said coupling consisting of a coupling pin on a cutting-head rear wall and a receptacle in the shank, said receptacle being complementary to the coupling pin and accommodating the coupling pin when the coupling is closed; anda central coolant passage in the shank, said coolant passage branching into two sub-passages in the region of the receptacle, wherein the two sub-passages flank the receptacle in a wall thereof, the two sub-passages open into a flat contact surface surrounding an opening edge of the receptacle in a ring-like manner,', 'a flat collar having an annular distribution groove is formed on the cutting-head rear wall, and', 'at least one coolant bore connects the distribution groove to the number of blades on the cutting head., 'wherein2. The tool as claimed in claim 1 , wherein the number of blades comprise a plurality of blades ...

Multi-flute reamer and cutting insert therefor

A multi-flute reamer includes a cutting portion having a forward end and a rearward end, and a chip flute with a chip gash opening, and a cutting insert mounted on the cutting portion. A leading edge is formed at an intersection between a top surface and a radially-outward side surface, and a front edge is formed at an intersection between the top surface and a forward side surface. The cutting insert includes a rounded lead cutting edge formed at the intersection between the leading edge and the front edge, and the top surface includes a chip breaker having a bottom surface formed with a radius, R.

Matrix Powder System and Composite Materials and Articles Made Therefrom

The present invention includes a matrix powder system comprising one or more polycrystalline carbides, binderless carbides, or a combination thereof, a composite comprising the matrix powder system and a metal bond phase, a matrix bit body for a drill bit for oil and gas drilling made of this composite material, and a drill bit for oil and gas drilling comprising the matrix bit body and at least one cutter. The polycrystalline and/or binderless carbides may comprise carbides of W, Ti, V, Cr, Nb, Mo, Ta, Hf, Zr, or a combination thereof. The binderless carbides have less than 3 wt. % binder and the binderless and/or polycrystalline carbides may have a grain size of ≦15 μm and a hardness of ≧1900 HV (0.5 kgf). Additional ceramic components and/or metals may also be present in the matrix powder system. Alternatively, the composite material may be present on only a portion of the matrix bit body surface.

Charge-Dispersing Alpha Prime-Beta Prime SiAlON

Industrial blast nozzles are disclosed which have liners made, at least in part, from a SiAlON-containing ceramic material which has a surface resistance of about 12 megaOhms or less and an erosion rate of about 1.9×10cm/g or less. The SiAlON-containing ceramic material preferably contains a two-phase SiAlON, silicon carbide, and a conductive phase that is one or more of titanium nitride, tantalum nitride, zirconium nitride, and titanium carbide. 1. A composition for a SiAlON-containing ceramic material consisting essentially of , in volume percent , from about 60 to about 85% two-phase SiAlON , from about 5 to about 25% silicon carbide , and from about 8 to about 15% of a conductive phase , wherein the two-phase SiAlON has an alpha-prime phase to beta-prime phase ratio in the range of about 0.4 to about 1.0 , and the conductive phase comprises at least one selected from the group consisting of titanium nitride , tantalum nitride , zirconium nitride , and titanium carbide.2. The composition of claim 1 , wherein the two-phase SiAlON is in the range of about 77 to about 81%.3. The composition of claim 1 , wherein the silicon carbide is the range of about 8 to about 12%.4. The composition of claim 1 , wherein the conductive phase is in the range of about 8 to about 12.5%.5. The composition of claim 1 , wherein the SiAlON-containing ceramic material has a surface conductivity of less than or equal to 12 megaOhms.6. The composition of claim 1 , wherein the SiAlON-containing ceramic material has an erosion rate of about 1.9×10or less.7. A liner for a blast nozzle comprising a SiAlON-containing material having a surface conductivity of less than or equal to about 12 megaOhms and an erosion rate of about 1.9×10cm/g or less.8. The liner of claim 7 , wherein the SiAlON-containing ceramic material has a composition consisting essentially of claim 7 , in volume percent claim 7 , from about 60 to about 85% two-phase SiAlON claim 7 , from about 5 to about 25% silicon carbide ...

Method for Making by Assembling a Tool to and in a Tool Holder, and the Tool and Told Holder, and the Assembled Tool and Tool Holder

A method for making by assembling a tool to and in a tool holder, and the tool and tool holder, and the assembled tool and tool holder. The tool is shrink-fitted into a cylindrical bore of the tool holder, and a shoulder of the tool abuts an abutment face of the tool holder. A structure, such as press, a screw, a draw bolt, or a cylinder, for example, is provided to apply an axial force to the cutting tool to force the tool shoulder against the abutment face of the tool holder. 1. A method for assembling a tool to a tool holder , said tool holder having a cylindrical bore of a first diameter at a first predetermined temperature terminating in an outer abutment face and configured to support a tool having a substantially cylindrical shank of a second diameter , said second diameter being sufficiently larger than said first diameter at said first predetermined temperature to provide a shrink-fit between said tool and said tool holder in use , said tool further comprising a shoulder portion having a third diameter substantially larger than said second diameter of said shank , said shoulder portion of said tool configured to abut said outer abutment face of said tool holder , said shoulder portion having a longitudinal length , along a common central axis of said tool , being sufficient to maintain a sufficient axial force between said cylindrical shank of said tool and said cylindrical bore of said tool holder during assembly to provide and maintain sufficient engagement between said shoulder portion and said outer abutment face during operation of said tool holder and said tool , said method comprising:positioning said tool and said tool holder along said common central axis;changing the temperature of at least one of said tool and said tool holder to a second predetermined temperature, said second predetermined temperature being substantially different than said first predetermined temperature of said tool or said tool holder to permit said cylindrical shank to be ...

COATED CUTTING INSERT AND METHOD FOR MAKING THE SAME

A coated cutting insert for removing material from a workpiece that includes a substrate is disclosed. A wear-resistant coating on the substrate that includes an alumina layer and a Zr- or Hf-carbonitride outer layer deposited on the alumina layer. The Zr- or Hf-carbonitride outer layer is subjected to a post-coat wet blasting treatment. The wet blasting changes the stress condition of the exposed alumina coating layer from an initial tensile stress condition to a compressive stress condition. 1. A coated cutting insert comprising:a substrate; anda multilayer coating scheme comprising:{'sub': 2', '3, 'an AlOlayer; and'}{'sub': 2', '3, 'an outer layer of ZrCN or HfCN on the AlOlayer,'}{'b': '220', 'wherein the outer layer exhibits a blasted stress condition ranging between about −700 MPa to about −4.0 GPa as measured by XRD using the Psi tilt method and the () reflection of ZrCN or HfCN.'}2. The coated cutting insert of wherein the blasted stress condition ranges between about −2.0 GPa and about −4.0 GPa.3. The coated cutting insert of wherein the multilayer coating scheme further comprises an innermost TiN and a TiCN layer on the TiN layer claim 1 , wherein the AlOlayer is on the TiCN layer.4. The coated cutting insert of claim 1 , wherein the AlOlayer is a κ-AlOlayer.5. The coated cutting insert of claim 1 , wherein the AlOlayer is an α-AlOlayer.6. The coated cutting insert of claim 1 , wherein the AlOlayer comprises a mixture of α-AlOand κ-AlO7. The coated cutting insert of further comprising a bonding layer between the AlOlayer and an outer layer claim 1 , the bonding layer comprising M(OCN) wherein M is selected from the group comprising one or more of the following titanium claim 1 , hafnium claim 1 , zirconium claim 1 , chromium claim 1 , titanium-aluminum alloy claim 1 , hafnium-aluminum alloy claim 1 , zirconium-aluminum alloy claim 1 , chromium-aluminum alloy claim 1 , and their alloys claim 1 , and x≧0 claim 1 , y≧0 claim 1 , z≧0 and y+z>0 claim 1 , and ...

ABRASION RESISTANT STEEL, METHOD OF MANUFACTURING AN ABRASION RESISTANT STEEL AND ARTICLES MADE THEREFROM

An abrasion resistant steel consisting essentially of, in weight %: 0.20-0.30% carbon, 0.40-1.25% manganese, 0.05% maximum phosphorous, 0.01% maximum sulfur, 0.20-0.60% silicon, 0.50-1.70% chromium, 0.20-2.00% nickel, 0.07-0.60% molybdenum, 0.010-0.10% titanium, 0.001-0.10% boron, 0.015-0.10% aluminum, balance iron, and incidental impurities. The steel may be melted and cast into a steel ingot or slab, hot rolled to a desired plate thickness; austenitized at 1650-1700° F.; water quenched; and tempered at 350-450° F. The resulting steel plate may have a surface hardness of at least 440 HBW, a mid-thickness hardness of at least 90% of the surface hardness, and toughness in the transverse direction at −60° F. of at least 20 ft-lbs and at room temperature of at least 40 ft-lbs. 1. An abrasion resistant steel consisting essentially of , in weight %: 0.20-0.30% carbon , 0.40-1.25% manganese , 0.05% maximum phosphorous , 0.01% maximum sulfur , 0.20-0.60% silicon , 0.50-1.70% chromium , 0.20-2.00% nickel , 0.07-0.60% molybdenum , 0.010-0.10% titanium , 0.001-0.10% boron , 0.015-0.10% aluminum , balance iron , and incidental impurities.2. The abrasion resistant steel according to claim 1 , wherein the surface hardness is at least 440 HBW and the mid-thickness hardness is at least 90% of the surface hardness.3. The abrasion resistant steel according to claim 1 , wherein the microstructure is tempered martensite.4. The abrasion resistant steel according to claim 1 , wherein the toughness in the transverse direction at −60° F. is at least 20 ft-lbs and at room temperature is at least 40 ft-lbs.5. The abrasion resistant steel according to claim 1 , wherein the surface hardness is at least 440 HBW.6. The abrasion resistant steel according to claim 5 , wherein the surface hardness is between 440-514 HBW.7. The abrasion resistant steel according to claim 1 , consisting essentially of claim 1 , in weight %: 0.22-0.26% carbon claim 1 , 0.70-0.90% manganese claim 1 , 0.025% maximum ...

ROTATING CUTTING TOOL AND GUIDE INSERT THEREFOR

A rotating cutting tool includes a single or multi-piece support part having an end face and a circumferential wall, an interchangeable cutting insert provided at or about the end face, and at least one interchangeable guide insert coupled to the support part via a retaining means. The at least one interchangeable guide insert being free of cutting edges and protruding radially relative to the circumferential wall. The at least one interchangeable guide insert including a guide section which protrudes radially furthest outward. The guide section lying axially at the level of the retaining means and offset from the retaining means in the circumferential direction. 1. A rotating cutting tool comprising:a single or multi-piece support part having an end face and a circumferential wall;an interchangeable cutting insert provided at or about the end face; andat least one interchangeable guide insert coupled to the support part via a retaining means, the at least one interchangeable guide insert being free of cutting edges and protruding radially relative to the circumferential wall,wherein the at least one interchangeable guide insert comprises a guide section which protrudes radially furthest outward, and wherein the guide section lies axially at the level of the retaining means and offset from the retaining means in the circumferential direction.2. The cutting tool as recited in claim 1 , wherein the at least one interchangeable guide insert comprises an aperture into which the retaining means extends.3. The cutting tool as recited in claim 2 , wherein the aperture is a radial through-hole for the retaining means.4. The cutting tool as recited in claim 1 , wherein the at least one interchangeable guide insert comprises a groove-like recess formed in an end face of the at least one interchangeable guide insert claim 1 , and wherein the retaining means extends along claim 1 , and at least partly projects into claim 1 , the groove-like recess.5. The cutting tool as recited ...

ABRASION RESISTANT STEEL, METHOD OF MANUFACTURING AN ABRASION RESISTANT STEEL AND ARTICLES MADE THEREFROM

An abrasion resistant steel consisting essentially of, in weight %: 0.20-0.30% carbon, 0.40-1.25% manganese, 0.05% maximum phosphorous, 0.01% maximum sulfur, 0.20-0.60% silicon, 0.50-1.70% chromium, 0.20-2.00% nickel, 0.07-0.60% molybdenum, 0.010-0.10% titanium, 0.001-0.10% boron, 0.015-0.10% aluminum, balance iron, and incidental impurities. The steel may be melted and cast into a steel ingot or slab, hot rolled to a desired plate thickness; austenitized at 1650-1700° F.; water quenched; and tempered at 350-450° F. The resulting steel plate may have a surface hardness of at least 440 HBW, a mid-thickness hardness of at least 90% of the surface hardness, and toughness in the transverse direction at −60° F. of at least 20 ft-lbs and at room temperature of at least 40 ft-lbs. 1. An abrasion resistant steel consisting essentially of , in weight %: 0.20-0.30% carbon , 0.40-1.25% manganese , 0.05% maximum phosphorous , 0.01% maximum sulfur , 0.20-0.60% silicon , 0.50-1.70% chromium , 0.20-2.00% nickel , 0.07-0.60% molybdenum , 0.010-0.10% titanium , 0.001-0.10% boron , 0.015-0.10% aluminum , balance iron , and incidental impurities.2. The abrasion resistant steel according to claim 1 , wherein the surface hardness is at least 440 HBW and the mid-thickness hardness is at least 90% of the surface hardness.3. The abrasion resistant steel according to claim 1 , wherein the microstructure is tempered martensite.4. The abrasion resistant steel according to claim 1 , wherein the toughness in the transverse direction at −60° F. is at least 20 ft-lbs and at room temperature is at least 40 ft-lbs.5. The abrasion resistant steel according to claim 1 , wherein the surface hardness is at least 440 HBW.6. The abrasion resistant steel according to claim 5 , wherein the surface hardness is between 440-514 HBW.7. The abrasion resistant steel according to claim 1 , consisting essentially of claim 1 , in weight %: 0.22-0.26% carbon claim 1 , 0.70-0.90% manganese claim 1 , 0.025% maximum ...

Method for the Electrochemical Machining of a Workpiece

The invention relates to a method for electrochemical processing of at least one workpiece, comprising at least the following steps: a) setting a first flow density during a first phase in an electrolyte, b) retaining the first flow density during a second phase following the first phase, c) increasing the first flow density during a third phase following the second phase to a second flow density at least 30% greater than the first flow density, and d) reducing the second flow density during a fourth phase following the third phase within a maximum of 100 microseconds to a maximum of 1% of the second flow density.

Internal milling cutter

The invention relates to an internal milling cutter including an annular tool support ( 11 ) equipped on the inner casing thereof with cutting inserts. The tool support ( 11 ) is fastened in a machine holder ( 10 ). According to the invention, a bayonet-type connection is provided between the tool support ( 11 ) and the machine holder ( 10 ).

Monolithic Ceramic End Mill

End mills are disclosed which may be made monolithically of ceramic or other materials. The cutting portions of the end mills have lengths of cut that are no more than twice their cutting diameters and cores which are at least 0.7 times their cutting diameters. Their axial blades have cutting edges with negative radial rake and are separated by helical flutes. Their cutting ends have negative axial rake and are gashed ahead of center and have radial cutting edges with negative rake. Such end mills also have radiused corners and gashes transitioning from radial to axial at a flute. Methods of milling materials using such ceramic end mills are also disclosed. 1. A monolithic end mill having a longitudinal axis , the end mill comprising:a shank portion extending along the longitudinal axis; andat least one cutting portion extending from the shank portion and including a cutting tip having a web, the cutting portion having a cutting diameter, an axial length of cut that is no more than twice the cutting diameter, a core diameter that is at least 0.7 times the cutting diameter, and a plurality of blades disposed at a helical angle from the longitudinal axis along the axial length of cut and extending at a radial angle onto the cutting tip to form a negative endrake and terminating proximate to the web;wherein each of the blades of the plurality of blades is separated from one another by a flute and has a corner radius, a negative radial rake, and a negative axial rake; andwherein the cutting tip has a dish angle and a plurality of gashes, each of the gashes of the plurality of gashes having a gash angle and extending into one of the flutes.2. The monolithic end mill of claim 1 , wherein the end mill is constructed from a ceramic.3. The monolithic end mill of claim 1 , wherein the end mill is constructed from a material selected from the group consisting of alumina reinforced with silicon carbide whiskers claim 1 , alumina titanium carbonitrides claim 1 , stabilized ...

MODULAR DRILL WITH DIAMOND CUTTING EDGES

A modular drill for machining applications includes a central pilot drill made of cemented carbide and outboard radial inserts having cutting edges with a diamond surface. Additionally, the diamond surface associated with the cutting edges includes indicia identifying each cutting edge, such that indexing of the inserts is made easier. To ensure the indicia withstands the harsh machining environment, the indicia is laser etched onto the diamond surface of the insert 1. A modular drill for machining applications , wherein the modular drill has a generally cylindrical body with peripheral walls about a central longitudinal axis and with an upper end , wherein the modular drill comprises:a. a centrally located pilot drill protruding from the upper end along the longitudinal axis;b. at least two cutting inserts, wherein each cutting insert has a top surface, a bottom surface and a plurality of sides therebetween with a cutting edge defined at the intersection of the top and side surfaces; wherein a cutting edge from each insert protrudes axially from the upper end of the body and is operative to engage a workpiece;c. wherein each operative cutting edge extends in a radial direction such that, when viewed along the central axis toward the upper end, the operative cutting edges combine to completely overlap the radial distance extending from the pilot drill to the peripheral walls;d. wherein the pilot drill is made of a non-diamond; ande. wherein the operative cutting edge of each of the cutting inserts has a diamond surface.2. The modular drill according to claim 1 , wherein each insert has a full face diamond layer thereupon and the operative cutting edge of each insert is integral with this diamond layer.3. The modular drill according to claim 2 , wherein the diamond layer is polycrystalline diamond.4. modular drill54. . The modular drill according to claim 2 , wherein each insert has a diamond tip brazed thereupon and the operative cutting edge of each insert is ...

ALPHA-BETA SIALON BALLISTIC ARMOR CERAMIC AND METHOD FOR MAKING THE SAME

A SiAlON armor ceramic made from a starting powder mixture including silicon nitride powder. The armor ceramic includes a ceramic body that has between about 64 weight percent and about 90 weight percent alpha SiAlON phase that contains an alpha SiAlON-bound rare earth element. The ceramic body also has between about 5 weight percent and about 35 weight percent of a beta SiAlON phase of the formula SiAlONwherein the value of “z” ranges between about 0.10 and about 0.35. The alpha SiAlON-bound rare earth element in the alpha SiAlON phase is present as a result of the starting powder mixture that contains between about 1 weight percent and about 7 weight percent of an oxide of the alpha SiAlON-bound rare earth element. The ceramic body has a fracture toughness (K) greater than about 6.00 MPa·mand a Vickers hardness (H) equal to greater than about 19.3 GPa. 1. A SiAlON armor ceramic made from a starting powder mixture including silicon nitride powder , the armor ceramic comprising:{'sub': 6−z', 'z', 'z', '8−z, 'a ceramic body comprising between about 64 weight percent and about 90 weight percent alpha SiAlON phase that contains an alpha SiAlON-bound rare earth element, and between about 5 weight percent and about 35 weight percent of a beta SiAlON phase of the formula SiAlONwherein the value of “z” ranges between about 0.10 and about 0.35;'}the alpha SiAlON-bound rare earth element in the alpha SiAlON phase being present as a result of the starting powder mixture containing between about 1 weight percent and about 7 weight percent of an oxide of the alpha SiAlON-bound rare earth element; and{'sub': IC', 'VN, 'sup': '1/2', 'the ceramic body having a fracture toughness (K) greater than about 6.00 MPa·mand a Vickers hardness (H) equal to greater than about 19.3 GPa.'}2. The SiAlON armor ceramic according to wherein the ceramic body comprising between about 80 weight percent and about 90 weight percent of the alpha SiAlON phase claim 1 , and the fracture toughness (K) ...

Cubic Aluminum Titanium Nitride Coating and Method of Making Same

Coated cutting tools are disclosed which have a hard coating that includes at least one aluminum titanium nitride layer having a single phase structure of B1 cubic phase and a composition of (AlTi)N, where x is in the range of about 0.46 to about 0.52 moles. The hard coatings also have a residual stress in the range of from about −0.4 to about −3 GPa as measured by the XRD SinΨ method, and a crystallographic orientation characterized by an x-ray diffraction (200) to (111) peak intensity ratio in the range of about 1 to about 14. Preferably the aluminum titanium nitride layer has an average crystallite size in the range of about 15 to about 50 nanometers. Methods of making such coated cutting tools are also disclosed. 1. A coated cutting tool comprising:a substrate having a cutting tool configuration; and{'sub': x', '1-x, 'sup': '2', 'a hard coating comprising at least one aluminum titanium nitride layer having a single phase structure of B1 cubic phase and a composition of (AlTi)N, where x is in the range of about 0.46 to about 0.52 moles, the hard coating further having a residual stress in the range of from about −0.4 to about −3 GPa as measured by the XRD SinΨ method and a crystallographic orientation characterized by an x-ray diffraction (200) to (111) peak intensity ratio in the range of about 1 to about 14.'}2. The coated cutting tool of claim 1 , wherein the substrate comprises cemented tungsten carbide.3. The coated cutting tool of claim 1 , wherein the configuration of the substrate is one selected from the group consisting of an end mill claim 1 , a milling tool claim 1 , a turning tool claim 1 , and a drilling tool.4. The coated cutting tool of claim 1 , wherein the hard coating has an average crystallite size in the range of from about 15 to about 50 nanometers.5. The coated cutting tool of claim 1 , wherein the residual stress of the hard coating is in the range of from about −0.4 to about −2.5 GPa.6. A method for making a coated cutting tool having a ...

FASTENER FOR ATTACHING A MILLING CUTTER BODY TO AN ADAPTOR AND METHOD OF INSTALLING SAME

A fastener for attaching a milling cutter body to an adaptor includes a head portion, a body portion and an undercut disposed between the head portion and the body portion. The head portion has a diameter greater than a diameter of the undercut and a thread root diameter. The diameter of the undercut is equal to or less than the thread root diameter to allow the fastener to freely rotate when the fastener is threaded completely through the milling cutter body. Once threaded completely threaded the milling cutter body, the fastener is threaded into the adaptor to securely attached the milling cutter body to the adaptor. 2. The fastener according to claim 1 , wherein the diameter of the head portion is greater than the diameter of the undercut and the thread root diameter.3. A method for attaching a milling cutter body to an adaptor using a fastener claim 1 , comprising:threading the fastener completely through the milling cutter body until a head portion of the fastener contacts a seating surface in a counter bore of the milling cutter body; andthreading the fastener into the adaptor to securely attach the milling cutter body to the adaptor. Typically, a standard shell mill style milling cutter is fastened to an adaptor by a commercially available socket head cap screw, as shown in .There are occasions in product development where design constraints of the milling cutter prohibit the use of a conventional fastener. As shown in , one example would be a small diameter milling cutter with a large cutting insert and the counter bore required in the milling cutter for the head of the fastener would invade the pocket and the chip gash areas and produce a weak cutter design.The existing practice that is used to address this problem is to use a special fastener that consists of threads on both ends. These threads are different diameters and pitch. The milling cutter also requires a threaded portion in the bore, as shown in . This type of attachment requires special (time ...

CUTTER BODY AND LOCKING SCREW THEREFOR

A combination cutter body and a locking screw for mounting the cutter body to an adapter is disclosed. The cutter body includes a plurality of threaded bores that extend radially through a sidewall of the cutting body. The threaded bores are adapted to receive a corresponding threaded setscrew. The locking screw includes a head having a plurality of indentations around a circumference of the head. A central axis of each threaded bore is offset by a distance from a central axis of each indentation to cause an axial force to be exerted on the cutter body when an end of the setscrew engages a respective indentation to tightly seat the cutter body against the adapter. 1. A cutter body and a locking screw , in combination , comprising:a cutter body including a plurality of threaded bores that extend radially through a sidewall of the cutter body, the threaded bores adapted to receive a corresponding setscrew; anda locking screw for mounting the cutter body to an adapter, the locking screw including a head having a plurality of indentations around a circumference of the head and a threaded shank, wherein an end of the setscrew engages a respective indentation in such a way that the cutter body is seated tightly against the adapter.2. The cutting tool of claim 1 , wherein a central axis of each threaded bore is offset by a distance from a central axis of each indentation to cause an axial force to be exerted on the cutter body to tightly seat the cutter body against the adapter.3. The cutting tool of claim 1 , wherein a number of indentations is greater than a number of threaded bores.4. The cutting tool of claim 1 , wherein each indentation is conical in shape claim 1 , and wherein the end of each setscrew is conical in shape.5. The cutting tool of claim 1 , wherein the cutter body includes a solid top surface.6. The cutting tool of claim 1 , wherein the threaded shank of the locking screw passes through a central axial bore in the cutter body and is adapted to be ...

SEGMENTED ORBITAL DRILL

A segmented orbital drill includes a segmented portion with a semi-finishing cutting portion and a plurality of finishing cutting portions. The semi-finishing cutting portion and finishing cutting portions are separated by grooves formed by a front wall and a rear wall. The segmented portion allows for a fresh cutting edge (i.e., rear wall of the groove) to be revealed as the orbital drill wears in the axial direction. The segmented portion also causes less contact with the workpiece, which reduces power consumption and minimizes deflection of the orbital drill. The segmented orbital drill also includes an optional pilot at one end of the drill, and a clearance neck portion between a shank and the segmented portion. A method of machining a workpiece using the segmented orbital drill is also disclosed. 1. A segmented orbital drill , comprising:a segmented portion including a semi-finishing cutting portion and a plurality of finishing cutting portions, the semi-finishing cutting portion having a diameter that is different than a diameter of the plurality of finishing cutting portions; anda clearance neck portion between the segmented portion and a shank.2. The segmented orbital drill of claim 1 , wherein the diameter of the semi-finishing cutting portion is less than the diameter of the plurality of finishing cutting portions.3. The segmented orbital drill of claim 1 , wherein the semi-finishing cutting portion and the plurality of finishing cutting portions is separated by a substantially V-shaped groove formed by a front wall claim 1 , a rear wall and a radius therebetween.4. The segmented orbital drill of claim 3 , wherein the rear wall and the front wall form an angle with respect to each other.5. The segmented orbital drill of claim 4 , wherein the angle is about ninety degrees.6. The segmented orbital drill of claim 3 , wherein an angle formed by the front wall with respect to an axis perpendicular to a central claim 3 , longitudinal axis of the segmented ...

Tool holder, and tool system with a tool holder and a tool

The tool holder ( 2 ) is realized for fastening to a machine tool and for reversibly receiving a radial tool ( 4 ), in particular for receiving a milling cutter. The tool holder ( 2 ) is realized in three parts, having a rear machine part ( 6 ), made of a ductile elastic tool steel, for reversibly fastening to the machine tool, and having a front clamping part ( 10 ), made of a tool steel, for reversibly receiving the tool ( 4 ), and having an intermediate part ( 8 ), made of a heavy metal, in particular solid hard metal, disposed between the machine part ( 6 ) and the clamping part ( 10 ). Owing to the greater density of the heavy metal in comparison with the tool steel, the tool holder ( 2 ) is better able to absorb forces occurring during a milling operation, thereby achieving a milling operation that is sparing of the cutting tool, and consequently achieving a long service life.

METHOD FOR MANUFACTURING AN INSERT POCKET OF A CUTTER BODY

A method for manufacturing an insert pocket of a cutter body is disclosed. First, the insert pocket of the cutter body a rough milling process. Then, the insert pocket is forged using a forging tool having a shape that generally conforms to the shape of the insert pocket. Then, the insert pocket undergoes a finish milling process to qualify the pocket geometry without removing the majority of the forge-enhanced pocket material. The insert pocket can be optionally heated prior to the forging step. The grain orientation of the inset pocket is compressed by the forging process to increase the impact and fatigue resistance of the insert pocket. 1. A method for manufacturing an insert pocket of a cutter body , the method comprising:a) rough milling an insert pocket of a cutter body;b) forging the insert pocket using a forging tool; andc) finish milling the insert pocket.2. The method of claim 1 , further comprising the step of heat treating the insert pocket after rough milling the insert pocket and prior to forging the insert pocket.3. The method of claim 1 , wherein the forging tool has a shape that generally conforms to a bottom surface and side surfaces of the insert pocket.4. The method of claim 1 , wherein the insert pocket is made of a steel alloy claim 1 , and wherein the forging tool exerts a force that exceeds a yield stress of the insert pocket.5. The method of claim 4 , wherein the tool holder is made of AISI 4340 steel claim 4 , and wherein the forging tool exerts a force of at least 136000 psi against the insert pocket.6. The method of claim 1 , wherein the forging tool includes a head portion and a body portion.7. The method of claim 5 , wherein the insert pocket includes a bottom surface and a plurality of side support surfaces claim 5 , and wherein the head portion has a shape that generally conforms to the shape of the insert pocket.8. A forging tool for manufacturing the insert pocket of the cutter body according to the method of . Forging is a ...

Coated Substrates and Methods of Making Same

Coated substrates having high wear resistant coatings are disclosed. The coatings include at least one layer of either titanium oxycarbonitride or titanium aluminum oxycarbonitride, such that the layer has an oxygen to titanium atomic percent ratio in the range of about 0.01 to about 0.09 and an aluminum to titanium atomic percent ratio in the range of about 0 to about 0.1. The coatings have a hardness to Young's modulus ratio of at least 0.06. The substrate may be a cutting insert. Methods of making such coated substrates are also disclosed in which layers comprising titanium oxycarbonitride or titanium aluminum oxycarbonitride are deposited by medium temperature chemical vapor deposition (MT-CVD) on substrates in the temperature range of about 750 to about 950° C. using a mixture of gases wherein the ratio of the hydrogen gas to the nitrogen gas is greater than 5. 1. A coated substrate comprising a substrate and a coating , the coating comprising at least one layer consisting of either titanium oxycarbonitride or titanium aluminum oxycarbonitride , wherein the layer has an oxygen to titanium atomic percent ratio in the range of about 0.01 to about 0.09 , an aluminum to titanium atomic percent ratio in the range of about 0 to about 0.1 , and the coating has a hardness in GPa to Young's modulus in GPa ratio of at least 0.06.2. The coated substrate of claim 1 , wherein the coating includes a plurality of layers.3. The coated substrate of claim 2 , wherein at least one layers of the plurality of layers comprises a material selected from the group consisting of titanium nitride claim 2 , titanium carbonitride claim 2 , aluminum oxide claim 2 , zirconium nitride claim 2 , and zirconium carbonitride.4. The coated substrate of claim 2 , wherein at least one of the layers of the plurality of layers is an adhesion layer.5. The coated substrate of claim 1 , wherein the coating has a thickness in the range of from about 1 to about 25 microns.6. The coated substrate of claim 1 ...

Cutting assembly

A toolholder has a head region, which contains a slot separating the head region into a lower section and an upper section, with a lower seat and an upper section to retain a cutting insert. The head region contains a coolant entrance passage, which receives coolant from a coolant source, and a coolant delivery passage, which discharges coolant toward a cutting insert. The head region further contains a fastener bore, which receives a fastener. The fastener has an axial fastener bore which provides fluid communication between the coolant entrance passage and a coolant reservoir between the fastener and the fastener bore. The coolant delivery passage communicates with the coolant reservoir to receive coolant, which passed from the coolant entrance passage and through the axial fastener bore into the coolant reservoir.

CUTTING TOOL INCLUDING A LOCKING SCREW AND ADAPTER WITH COOLANT DELIVERY

A cutting tool has a cutter body, which carries a cutting insert, and an adapter, which has a longitudinal adapter axis, wherein a locking screw attaches the cutter body to the adapter. A coolant volume is defined in a vicinity of a meeting of the cutter body, the adapter and the locking screw. The adapter contains an axial adapter bore. The locking screw contains a transverse locking screw bore in fluid communication with the axial adapter bore. The locking screw further contains a peripheral transverse locking screw bore passage in fluid communication with the coolant volume and the transverse locking screw bore. The coolant volume and the transverse locking screw bore are in fluid communication with the cutter body coolant passage. 1. A cutting tool in fluid communication with a coolant source , the cutting tool comprising:a cutter body adapted to carry a cutting insert, the cutter body containing a cutter body coolant passage;an adapter containing a first adapter bore in fluid communication with the coolant source;a locking screw, the locking screw engaging the adapter so as to secure the cutter body to the adapter;a coolant volume being defined in a vicinity of a meeting of the cutter body, the adapter and the locking screw;the locking screw containing a locking screw bore in fluid communication with the first adapter bore, the locking screw further containing a peripheral locking screw bore passage in fluid communication with the coolant volume and the locking screw bore;the locking screw bore being in fluid communication with the cutter body coolant passage; andthe coolant volume being in fluid communication with the cutter body coolant passage.2. The cutting tool according to wherein the locking screw bore being in direct fluid communication with the cutter body coolant passage.3. The cutting tool according to wherein the coolant volume being in direct fluid communication with the cutter body coolant passage.4. The cutting tool according to wherein the ...

CUTTING INSERT WITH DISCRETE CUTTING TIP AND CHIP CONTROL STRUCTURE

A cutting insert incorporates a pre-formed discrete cutting tip which wraps around a curved cutting corner of the insert. The cutting tip includes a top layer and a bottom layer made of a relatively harder material than the top layer. In one embodiment, the bottom layer is made of polycrystalline diamond (PCD) or a polycrystalline cubic boron nitride (CBN) material and the top layer is made of cemented carbide. The cutting insert may further incorporate a chip control structure formed in the cutting tip including a plurality of facets formed on each side of a centerline for providing chip control during a cutting operation. The chip control structure can be formed in a two-step process to expose a portion of the bottom layer. The discrete cutting tip can be brazed to the cutting insert prior to forming the chip control structure. 1. A cutting insert , comprising:a body having upper face, a base face, at least two side walls joining the upper face and the lower face, a curved cutting corner at the intersection of the at least two side walls, and a cutting edge formed at the intersections of each side wall and the upper face;a recess formed in the curved cutting corner; anda cutting tip mounted in the recess, the cutting tip including of a top layer made of a first material, and a bottom layer disposed adjacent a floor of the recess and made of a second material having a greater hardness than the first material.2. The cutting insert of claim 1 , wherein the bottom layer is made of polycrystalline diamond or polycrystalline cubic boron nitride claim 1 , and wherein the top layer is made of cemented carbide.3. The cutting insert of claim 1 , wherein the cutting tip includes a chip control structure.4. The cutting insert of claim 3 , wherein the chip control structure includes a plurality of facets.5. The cutting insert of claim 4 , wherein at least two facets are formed on each side of a centerline extending through the curved cutting corner.6. The cutting insert of ...

TOOL FOR TURN/TURN BROACHING OR EXTERNAL MILLING

A tool for the turn/turn broaching or external milling of a workpiece is disclosed. The tool comprises a disk-shaped broaching wheel or at least one segment of such a broaching wheel. In each case at least one cutting-tip holding fixture for receiving a cutting tip is provided on the end faces of the broaching wheel or segment laterally adjoining a circumferential surface. On at least one of the two end faces, the or each cutting-tip holding fixture is formed in a cartridge which is axially adjustable with respect to the broaching wheel or segment by an axial clamping wedge. The cartridge is designed in such a way that it at least partially covers the axial clamping wedge in a direction towards the circumferential surface. 17-. (canceled)8. A tool for turn/turn broaching or external milling of a workpiece , the tool comprising a disk-shaped broaching wheel having two end faces laterally adjoining a circumferential surface of the broaching wheel , each end face having at least one cutting-tip holding fixture for holding a cutting tip , each cutting-tip holding fixture including a cartridge that is axially adjustable with respect to the broaching wheel by means of an axial clamping wedge , wherein the cartridge at least partially covers the axial clamping wedge in a direction towards the circumferential surface.9. The tool as claimed in claim 8 , wherein the cartridge includes a roof region that projects beyond the axial clamping wedge claim 8 , the roof region having an orifice that is narrow in comparison with an outer diameter of the axial clamping wedge claim 8 , the orifice capable of accepting an actuating tool for adjusting the axial clamping wedge.10. The tool as claimed in claim 8 , wherein the axial clamping wedge is accessible from one of the two end faces of the broaching wheel in order to adjust the axial clamping wedge by means of an actuating tool.11. The tool as claimed in claim 8 , wherein one of the cutting-tip holding fixtures is formed on the ...

COATING FOR IMPROVED WEAR RESISTANCE

In one aspect, coated cutting tools are described herein which, in some embodiments, can demonstrate improved wear resistance in one or more cutting applications. In some embodiments, a coated cutting tool described herein comprises a substrate and a coating adhered to the substrate, the coating comprising an inner layer deposited by physical vapor deposition and an outer deposited by physical vapor deposition over the inner layer. 1. A coated cutting tool comprising:a substrate; and an inner layer deposited by physical vapor deposition comprising aluminum one or more metallic elements selected from the group consisting of metallic elements of Groups IVB, VB and VIB of the Periodic Table and one or more non-metallic elements selected from the group consisting of non-metallic elements of Groups IIIA, IVA and VIA of the Periodic Table; and', 'an outer layer deposited by physical vapor deposition over the inner layer, the outer layer comprising aluminum and silicon and one or more metallic elements selected from the group consisting of metallic elements of Groups IVB, VB and VIB of the Periodic Table and one or more non-metallic elements selected from the group consisting of non-metallic elements of Groups IIIA, IVA and VIA of the Periodic Table, wherein the amount of silicon in the outer layer decreases toward the inner layer., 'a coating adhered to the substrate, the coating comprising2. The coated cutting tool of claim 1 , wherein the inner layer is polycrystalline.3. The coated cutting tool of claim 1 , wherein the outer layer is polycrystalline.4. The coated cutting tool of claim 1 , wherein the inner layer comprises AlTiN where 0 Подробнее

ALUMINUM OXYNITRIDE COATED ARTICLE AND METHOD OF MAKING THE SAME

A coated article such as a coated cutting tool or coated wear part, which includes a substrate and a coating scheme on the substrate. The coating scheme has a titanium-containing coating layer, and an aluminum oxynitride coating layer on the titanium-containing coating layer. The aluminum oxynitride includes a mixture of phases having a hexagonal aluminum nitride type structure (space group: P63mc), a cubic aluminum nitride type structure (space group: Fm-3m), and optionally amorphous structure. The aluminum oxynitride coating layer has a composition of aluminum in an amount between about 20 atomic percent and about 50 atomic percent, nitrogen in an amount between about 40 atomic percent and about 70 atomic percent, and oxygen in an amount between about 1 atomic percent and about 20 atomic percent. The method of making the coated article includes a step of providing a substrate and depositing an aluminum oxynitride coating layer from a gaseous mixture that includes nitrogen, aluminum tri-chloride, ammonia, carbon dioxide, hydrogen chloride, optionally carbon monoxide, optionally argon, and hydrogen. 1. A method for making a coated article , the method comprising the steps of:providing a substrate;depositing an aluminum oxynitride coating layer from a gaseous mixture, the gaseous mixture comprising:nitrogen in an amount between about 30.0 volume percent and about 65.0 volume percent of the gaseous mixture;aluminum tri-chloride in an amount between about 0.7 volume percent and about 1.3 volume percent of the gaseous mixture;ammonia in an amount between about 1.0 volume percent and about 2.0 volume percent of the gaseous mixture;carbon dioxide in an amount between about 0.1 volume percent and about 1.5 volume percent of the gaseous mixture;hydrogen chloride in an amount between about 1.5 volume percent and about 4.5 volume percent of the gaseous mixture;carbon monoxide optionally in an amount between about 0 volume percent and about 2.0 volume percent of the gaseous ...

Cutting Insert For A Roof Drill Bit

A hard cutting insert for use with a roof drill bit includes a first webbed notch and a second webbed notch structured and arranged on the hard insert for removing or evacuating drilling debris from an upper surface of the hard insert during a drilling operation. A roof drill bit incorporating the hard cutting insert is also provided. 1. A hard insert for use with a roof drill bit , the hard insert comprising:a first side and a second side opposing and generally parallel to the first side, the first and second sides extending in a longitudinal dimension of the hard insert;a first inclined upper surface and a second inclined upper surface that are both positioned between the first and second sides; anda first webbed notch and a second webbed notch structured and arranged on the upper surface of the hard insert for removing drilling debris from the upper surface of the hard insert during a drilling operation.2. The hard insert of claim 1 , wherein the first webbed notch is positioned at a generally central portion of the upper surface of the hard insert.3. The hard insert of claim 2 , wherein the second webbed notch is positioned at the generally central portion of the upper surface of the hard insert generally adjacent the first webbed notch.4. The hard insert of claim 1 , wherein the first webbed notch is adjacent the first side and extends generally between the first and second inclined upper surfaces.5. The hard insert of claim 2 , wherein the second webbed notch is adjacent the second side and extends generally between the first and second inclined upper surfaces.6. The hard insert of claim 1 , further including a cutting surface extending between the first webbed notch and the second webbed notch.7. The hard insert of claim 6 , wherein at least a portion of the cutting surface extending between the first webbed notch and the second webbed notch is generally concave.8. The hard insert of claim 1 , further including opposing first and second ends that each extend ...

Cutting Tool

A cutting tool for use in impinging earth strata includes a cutting tool body having a head portion at an axial forward end, a collar portion axially rearward of the head portion, and a shank portion axially rearward of the collar portion at an axial rearward end, wherein the cutting tool body contains a first socket at the axial forward end thereof. The shank portion generally tapers in the axial rearward direction. The cutting tool also includes a hard cutting member affixed to the cutting tool body within the first socket. The hard cutting member includes an axial forward end and an axial rearward end. The hard cutting member also includes a superhard axial forward portion of the axial forward end thereof, wherein the superhard axial forward portion comprises a substrate and a layer of superhard material adhered to the substrate. 1. A cutting tool body with a central longitudinal axis , the cutting tool body comprising:an axial forward end and an axial rearward end;a head portion, a shank portion and a collar portion, and the collar portion being mediate of and contiguous with the head portion and the shank portion;wherein the shank portion has an axial forward end and an axial rearward end and the shank portion has a continuous taper in the axial rearward direction from the axial forward end of the shank portion to the axial rearward end of the shank portion.2. The cutting tool body of claim 1 , wherein a diameter of the shank portion adjacent the axial forward end of the shank portion is larger than a diameter of the shank portion adjacent the axial rearward end.3. The cutting tool body of claim 1 , wherein a diameter of the shank portion decreases linearly from adjacent the axial forward end to the axial rearward end.4. A cutting tool for use in impinging earth strata claim 1 , the cutting tool comprising:a cutting tool body having a head portion at an axial forward end, a collar portion axially rearward of the head portion, and a shank portion axially ...

CVD COATED POLYCRYSTALLINE c-BN CUTTING TOOLS

In one aspect, the present invention provides coated cutting tools comprising a PcBN substrate wherein a layer of single phase α-alumina is deposited by chemical vapor deposition directly on one or more surfaces of the substrate. 1. A coated cutting tool comprising:a substrate comprising greater than 80% weight percent polycrystalline cubic boron nitride (PcBN); and{'sub': 2', '3, 'a coating adhered to the substrate, the coating comprising a layer of single phase α-AlOdeposited by chemical vapor deposition directly on a surface of the substrate.'}2. The coated cutting tool of claim 1 , wherein the substrate comprises at least 90 weight percent PcBN.3. The coated cutting tool of claim 1 , wherein the layer of single phase α-AlOhas a thickness of at least about 2 μm.4. The coated cutting tool of claim 1 , wherein the layer of single phase α-AlOhas a thickness ranging from about 2 μm to about 20 μM.5. The coated cutting tool of claim 1 , wherein the layer of single phase α-AlOhas an average grain size ranging from about 0.2 μm to about 5 μm.6. The coated cutting tool of claim 1 , wherein the layer of single phase α-AlOhas an average grain size ranging from about 0.5 μm to about 2 μm.7. The coated cutting tool of claim 1 , wherein grains at the surface of the single phase α-AlOlayer display a polyhedral morphology.8. The coated cutting tool of claim 1 , wherein grains at the surface of the single phase α-AlOlayer have an aspect ratio greater than about 2 in a plane parallel to the surface.9. The coated cutting tool of claim 1 , wherein the coating has a critical load (L) greater than 65 N.10. The coated cutting tool of claim 1 , wherein the coating has a critical load (L) greater than 70 N.11. The coated cutting tool of claim 1 , wherein the coating further comprises a layer of MOONdeposited by chemical vapor deposition over the single phase α-AlOlayer claim 1 , wherein M is a metal selected from the group consisting of metallic elements of Groups IVB claim 1 , VB and ...

ROUND CUTTING INSERT WITH REVERSE ANTI-ROTATION FEATURE

A round cutting insert with a reverse anti-rotation feature that can be manufactured easily and inexpensively is disclosed. The round cutting insert includes a plurality of dimples formed on a first surface and another plurality of dimples formed on a second, opposing surface. The round insert is reversible and indexable. The round cutting insert is removable received in an insert receiving pocket in a tool body. The insert receiving pocket includes a single projection that is capable of being received in one of the plurality of dimples. The cooperation between the projection and one of the plurality of dimples prevents rotation of the round cutting insert when mounted in the insert receiving pocket. The plurality of dimples and the projection can be any desirable complimentary shape, such as a slot, a V-shape, a wagon wheel, a sports wheel, a pyramid, and the like. 1. A round cutting insert comprising:a first outer surface that terminates generally outwardly in a first cutting edge and terminates generally inwardly in a first inner edge;a first inner surface extending generally inwardly from the first inner edge toward a non-cylindrical opening that extends axially through the cutting insert;a plurality of first dimples formed in the first inner surface between the first inner edge and the opening;a second outer surface that terminates generally outwardly in a second cutting edge and terminates generally inwardly in a second inner edge;a second inner surface extending generally inwardly from the second inner edge;a plurality of second dimples formed in the second inner surface between the second inner edge and the opening; anda generally circular side portion that extends between the first outer surface and the second outer surface,wherein one of the plurality of first dimples or one of the plurality of second dimples cooperates with a projection formed on a support surface of an insert receiving pocket in a tool body to prevent rotation of the cutting insert when ...

CLAMPING MECHANISM FOR SLOTTING CUTTER

A slotting cutter includes a disc-like cutter body rotatable in a predetermined direction on a central axis perpendicular to a plane of the cutter body. A plurality of cutting insert receiving pockets and a corresponding number of thread holes are formed about a perimeter of the body. A cutting insert is replaceably mounted in each insert receiving pocket of the cutter body, and a clamping screw is replaceably threaded in each thread hole of the cutter body. A cantilevered portion is disposed between each insert receiving pocket and a respective thread hole that exerts a downward force to securely hold the cutting insert in the cutter body when the clamping screw is threaded into the thread hole. 1. A slotting cutter , comprising:a disc-like cutter body rotatable in a predetermined direction on a central axis perpendicular to a plane of the cutter body;a plurality of insert receiving pockets formed about a perimeter of the body;a plurality of thread holes formed about the perimeter of the cutter body;a clamping screw replaceably threaded in each thread hole of the cutter body; anda cantilevered portion disposed between each insert receiving pocket and a respective thread hole,wherein the clamping screw causes the cantilevered portion to exert a downward force against a cutting insert when the clamping screw is threaded into the thread hole.2. The slotting cutter according to claim 1 , wherein the cantilevered portion includes a bottom surface for engaging the cutting insert.3. The slotting cutter according to claim 2 , wherein the bottom surface of the cantilevered portion is complementary in shape to a top surface of the cutting insert.4. The slotting cutter according to claim 1 , wherein each thread hole has threaded sidewalls that are formed at a taper angle with respect to each other.5. The slotting cutter according to claim 4 , wherein each sidewall is separated by a transverse slot.6. The slotting cutter according to claim 1 , wherein each insert receiving ...

CUTTING UNIT, METHOD OF VARYING RAKE ANGLE OF CUTTING UNIT AND METHOD OF ASSEMBLING THEREOF

A cutting unit includes a detachable head assembly with a cutting insert and holder. The mating spherical surfaces in both parts helps to get freedom of movement, hence helps in getting different rake angles. A set of pins helps getting correct center height for the cutting insert when spherical surfaces of both parts are not in contact with each other. The pins when lifted up gives point contact with spherical surface of the head assembly. The pins are moved in the holes provided in the holder with the help of screw-nut principle. The head assembly is clamped against holder using a clamping ball mechanism. The clamping balls are free to rotate in their respective seating area. Rake angles are changed by turning the head assembly manually. Once the required rake is set, the clamping balls are fastened. 1. A cutting unit comprising:a holder comprising a supporting block including a cut out at one end in one face; and a plurality of through holes at predetermined places on the cut out;a head assembly connected to said block, conforming to shape of said cut out, said head assembly comprising an insert pocket to accommodate a cutting insert, and a through hole at its center for connecting with the holder;fastening means passing through the holes of the supporting block and head assembly; anda plurality of pins passing through the holes of the holder, wherein said pins are varied to displace the head assembly to vary rake angle of the cutting unit.2. The cutting unit as claimed in claim 1 , wherein the fastening means comprises a ball bolt comprising threaded rod connected with a ball screw comprising a threaded ball head and a hexagonal protrusion for fastening.3. The cutting unit as claimed in claim 1 , wherein the supporting block comprises one or more threaded holes for guiding the pins and wherein axes of the pins meet at one point.4. The cutting unit as claimed in claim 1 , wherein the pins are threaded for predetermined length and have spherical face at an end ...

CUTTER ASSEMBLY

The present disclosure provides a cutter assembly (), said cutter assembly () comprises a back plate () adapted to mount on a machine spindle, wherein said back plate () having stepped portion () on its surface. The stepped portion () of the back plate () comprises plurality of oblong slots () and locating surfaces () at predetermined locations in its outer circumference. A cutter ring () adapted mount on outer circumference of the stepped portion () of the back plate () and a fastening members () to connect said cutter ring () with the back plate (). 1. A cutter assembly comprising:a back plate adapted to mount on a machine spindle, said back plate having a stepped portion including a plurality of oblong slots and locating surfaces at predetermined locations on an outer circumference of the stepped portion;a cutter ring adapted to be mounted on the outer circumference of the stepped portion of the back plate; and{'b': '101', 'at least one fastening member to connect said cutter ring with the back plate ().'}2. The cutter assembly as claimed in the claim 1 , wherein the oblong slots are provided between the locating surfaces tangentially around circumference of the stepped portion.3. The cutter assembly as claimed in the claim 1 , wherein the oblong slots are provided for mounting of the cutter ring onto the back plate.4. The cutter assembly as claimed in the claim 1 , wherein the locating surfaces maintains a localized contact with the cutter ring at working position.5. The cutter assembly as claimed in the claim 1 , wherein at least one drive tenon is provided on the back plate.6. The cutter assembly as claimed in the claim 1 , wherein the at least one fastening member is selected from the group comprising a socket head cap screw claim 1 , a threaded bolt claim 1 , and a hex lobular screw.7. The cutter assembly as claimed in claim 1 , wherein the back plate is provided with socket head cap screws to couple with the cutter ring.8. The cutter assembly as claimed in ...

CUTTING INSERT CARRIER

The cutting insert carrier, in particular for a face milling cutter () comprises a tool basic body (), having a multiplicity of insert seats (), in which cutting inserts () are received. Rotatably fastened to the tool basic body () is a setting element, which is realized, in particular, as a curved ring () and which has circumferential cams (), by means of which the clamping levers () are actuated for the purpose of fastening the cutting inserts () in a locking manner. The setting element () enables all clamping levers () to be actuated jointly, at the same time, such that all cutting inserts () are simultaneously released or locked in their insert seats (). As a result, the assembly and setup time for insert changing is reduced significantly in comparison with conventional systems. 1. A cutting insert carrier (blade head) , in particular for a face milling cutter , comprising a tool basic body having a plurality of insert seats distributed around the circumference thereof and are capable of receiving cutting inserts for workpiece machining , wherein a setting element is provided on the tool basic body , and a clamping element assigned to each insert seat for clamping a respective cutting insert in the insert seat in a reversibly releasable manner , and wherein a plurality of clamping elements are jointly actuated by the setting element to simultaneously mount the cutting inserts.2. The cutting insert carrier as claimed in claim 1 , wherein the setting element is mounted on the tool basic body so as to be adjustable relative to the tool basic body claim 1 , and the plurality of clamping elements can be actuated by a relative movement of the setting element.3. The cutting insert carrier as claimed in claim 1 , wherein the plurality of clamping elements are guided in a constrained manner on the setting element in such a way that an adjustment movement of the setting element results in an adjustment of the plurality of clamping elements.4. The cutting insert carrier as ...

GROOVING INSERT AND METHOD FOR PRODUCING A GROOVING INSERT

A grooving insert comprising a cutting edge () extending over the width (B) of the insert (), a main flank () and a rake face () and also a supporting side () opposite the rake face () is characterized in that the grooving insert has a substantially cube-shaped outer contour and consists of two geometrically identical cube halves merging into one another in a parting plane, wherein each cube half has a separate cutting edge and the cube halves lie so as to be rotated by 90° relative to one another and turned by 180° relative to one another. 1. A grooving insert comprising a cutting edge extending over the width of the grooving insert , a main flank and a rake face and also a supporting side opposite the rake face , wherein the grooving insert has a substantially cube-shaped outer contour and consists of two geometrically identical cube halves merging into one another in a parting plane , wherein each cube half has a separate cutting edge and the cube halves lie so as to be rotated by 90° relative to one another and turned by 180° relative to one another.2. The grooving insert as claimed in claim 1 , wherein the grooving insert comprises a tangential grooving insert.3. The grooving insert as claimed in claim 1 , wherein the grooving insert is a tangential grooving insert and has a substantially parallelepiped-shaped claim 1 , preferably cube-shaped outer contour and two cutting edges which are formed by two outer edges of the parallelepiped which are not adjacent to one another.4. The grooving insert as claimed in in claim 1 , further comprising a fastening opening starting from the main flank.5. The grooving insert as claimed in claim 1 , wherein the supporting side is convexly shaped at least at the margin toward the main flank and has an increasing height toward its center.6. The grooving insert as claimed in claim 5 , wherein the opposite corners at the transition of supporting side claim 5 , main flank and side surfaces are beveled claim 5 , preferably in a ...

QUICK CHANGE CLAMPING DEVICE

A clamping assembly for a toolholder includes a toolholder body having an access hole. A locking sleeve is slidably disposed within the access hole and a center collet is disposed within the locking sleeve and is fixedly connected to the toolholder body. The center collet receives a retaining tip of a tool. A spring assembly and a release device cause the locking sleeve to move within the access hole between a load position, where the locking sleeve is disengaged from the center collet such that the center collet is open and a lock position, where the locking sleeve engages the center collet such that the center collet is closed and locks the retaining tip of the tool within the access hole. 1. A clamping assembly for a toolholder , comprising:a toolholder body having an access hole defined therein, the access hole extending into the toolholder body from a toolholder face of the toolholder body to a base surface;a locking sleeve slidably disposed within the access hole, the locking sleeve extending between a sleeve face and a base surface and having an interior surface defining a hollow cavity, the interior surface including an engaging portion extending into the hollow cavity;a center collet disposed within the hollow cavity of the locking sleeve and fixedly connected to the toolholder body, the center collet including a gripping portion having an interior surface defining a recess and an exterior surface, the gripping portion being adapted to receive a retaining tip of a tool therein;a spring assembly disposed within the hollow cavity of the locking sleeve and engaging the center collet and the locking sleeve to bias the locking sleeve toward the base surface of the access hole; anda release device engaging the locking sleeve,wherein the spring assembly and the release device are configured to cause the locking sleeve to move within the access hole between a load position where the engaging portion of the locking sleeve is disengaged from the exterior surface of ...

SIDE-MILLING CUTTER, IN PARTICULAR FOR MACHINING TOOTHING SYSTEMS

The invention relates to a side-milling cutter for producing a toothing system, having at least one insert having a rectangular cross section arranged in a holding pocket as an insert seat, having two top surfaces facing away from each other, having two long insert sides located opposite each other and also having two narrow insert sides located opposite each other. Of four cutting edges of the insert which extend along the long insert sides in the longitudinal direction, in each case two cutting edges delimit the top surfaces of the insert at the edge, each cutting edge extending in a curve. 1. A side-milling cutter for producing a toothing system , having at least one indexable insert of rectangular cross section arranged in a holding pocket as an insert seat , said indexable insert having two top surfaces facing away from each other , having two longitudinal insert sides located opposite each other , having two narrow insert sides located opposite each other and having in each case two cutting edges delimiting the top surfaces at the edge ,wherein the four cutting edges extend along the longitudinal insert sides in the longitudinal direction of the insert, andwherein each cutting edge extends in an arc.2. The side-milling cutter as claimed in claim 1 , having holding pockets on both sides as insert seats for a number of indexable inserts.3. The side-milling cutter as claimed in claim 1 , having a central longitudinal plane of the disk claim 1 , which intersects the longitudinal center line of said cutter claim 1 , wherein the indexable inserts are set obliquely to the central longitudinal plane of the disk.4. The side-milling cutter as claimed in claim 1 , having alternately equipped holding pockets such that indexable inserts and tooth head machining inserts suitable exclusively for machining the tooth heads of a toothing system are arranged alternately.5. The side-milling cutter as claimed in claim 4 , wherein both the indexable inserts and the tooth head ...

Retainer Sleeve and Washer for Cutting Tool

An apparatus for mounting a cutting tool includes a retainer sleeve that defines at least one retention groove adjacent an axial forward end thereof and a washer removably attached to the retainer sleeve. The washer has a forward surface, a rearward surface and an interior surface that define a central opening, wherein the interior surface includes at least one protrusion extending inward into the central opening that is structured and arranged for cooperating with the at least one retention groove in the retainer sleeve. The retainer sleeve further defines a longitudinal slot that extends from an axial forward end to an axial rearward end of the retainer sleeve. The washer further includes a key extending inward into the central opening that is structured and arranged for cooperating with the longitudinal slot in the retainer sleeve. 1. A tool assembly for mounting a cutting tool , the tool assembly comprising:a block comprising a holder portion having a front face, a rear face and a longitudinal bore extending therethrough from the front face to the rear face;a retainer sleeve removably received in the bore of the holder, the retainer sleeve defining a longitudinal slot that extends from an axial forward end to an axial rearward end of the retainer sleeve, the retainer sleeve further defining at least one retention groove adjacent the axial forward end thereof; and a key extending inward into the central opening that is structured and arranged for cooperating with the longitudinal slot in the retainer sleeve; and', 'at least one protrusion extending inward into the central opening that is structured and arranged for cooperating with the at least one retention groove in the retainer sleeve., 'a washer removably attached to the retainer sleeve, the washer having a forward surface, a rearward surface and an interior surface that define a central opening, wherein the interior surface includes2. The tool assembly of claim 1 , wherein the rearward surface of the washer ...

TOOL FOR MACHINING AND METHOD FOR ORIENTING CUTTING INSERTS IN SUCH A TOOL

A tool includes a parent body () and at least two cutting inserts () fastened directly or indirectly to the parent body (). A central clamping device () is configured to clamp the cutting inserts () in an oriented position relative to the parent body (). An assembly includes the tool () and a jig (), which can accommodate the tool () in such a way that the cutting insert () is located in a desired position on the tool () and can be clamped in the desired position by actuating the clamping device (). A method for fastening at least one cutting insert () to the parent body () includes fitting the parent body () with the cutting insert (); arranging the parent body () in a jig (); bringing the cutting insert () into a desired position; and clamping the cutting insert () in the desired position. 1. A tool for machining , comprising a parent body and at least two cutting inserts which are fastened directly or indirectly to the parent body , wherein a central clamping device is provided for clamping the cutting inserts in an oriented position relative to the parent body.2. The tool as claimed in claim 1 , further comprising a plurality of receptacles on the parent body for arranging a respective cutting insert.3. The tool as claimed in claim 2 , wherein the cutting insert is attached to a holder claim 2 , which is arranged in turn in corresponding receptacle.4. The tool as claimed in claim 3 , wherein the cutting insert is displaceable in the corresponding receptacle in the axial and/or radial direction when the clamping device is not actuated.52426. The tool as claimed in claim 2 , wherein the receptacle is a pocket having a base surface claim 2 , a top surface and at least one side surface ( claim 2 , ).6. The tool as claimed in claim 5 , wherein the cutting insert claim 5 , when the clamping device is not actuated claim 5 , can be rotated about an axis which is perpendicular to the base surface of the receptacle.7. The tool as claimed in claim 2 , wherein the clamping ...

Tool holder for a cutting tool and sleeve for a tool holder

A tool holder for a cutting tool having a tool shank includes a receptacle which extends in an axial direction and a sleeve disposed in the receptacle. The sleeve includes a tool receptacle structured to at least partially receive the tool shank and a blocking element that projects radially into the tool receptacle. The axial positioning of the sleeve is adjustable with respect to the receptacle.

Rotary cutting tool with vibration damping device

A rotary cutting tool includes a cutter body having a head, a shank, and a cavity extending along a central, longitudinal axis of the cutter body. The head includes at least one cutting insert mounted in a pocket adjacent to a chip groove. A vibration damping device is disposed within the cavity. The vibration damping device includes a stop member, a threaded fastener, weight elements, and a biasing member. At least one, if not all of the weight elements have different outside diameters to cause the weight elements to vibrate in the cavity at different frequencies. At least some of the frequencies of the weight elements are different than a fundamental chatter frequency of the cutting tool, thereby dampening vibration of the rotary cutting tool during a machining operation.

TRIANGLE INSERT WITH MULTIPLE CUTTING EDGES AND MILLING CUTTER THEREFOR

An indexable insert () having a triangular shape with a top surface and a bottom surface (), as well as a circumferential surface which connects said surfaces, has cutting edges around the corners (-). At least in the region of its edges on the top and bottom surface (), the indexable insert () is identical such that all six cutting edges can be used for the same rotational cutting direction. The secondary cutting edges () adjoin two main cutting edges () and extend at different angles with respect to the same. Over and above this, a surface corner milling cutter with a corresponding indexable insert () is described. 1. An indexable insert , having a triangular shape with a top surface and a bottom surface as well as a circumferential surface which connects the top surface and the bottom surface , wherein cutting edges , which connect the circumferential surface to the top surface or to the bottom surface , extend around the corners , wherein the geometry of the top surface and of the bottom surface is the same at least in the region of their edges and at their corners they have main and secondary cutting edges and the secondary cutting edges are at different angles with respect to the two main cutting edges adjoining them.2. The indexable insert as claimed in claim 1 , wherein said indexable insert is a corner milling cutting tip.3. The indexable insert as claimed in claim 1 , wherein said indexable insert is a 90° surface corner milling cutting tip.4. The indexable insert as claimed in claim 2 , wherein the longitudinal edges of the top and bottom surfaces define a main cutting edge and the corners are trimmed once to form in each case a secondary cutting edge.5. The indexable insert as claimed in claim 4 , wherein each main cutting edge extends over the entire length of its associated longitudinal edge and runs in a linear manner.6. The indexable insert as claimed in claim 5 , wherein each main cutting edge extends from the cutting edge corner claim 5 , which is ...

DRILLING/REAMING TOOL

A drilling/reaming tool includes a basic body which extends in a longitudinal direction. The basic body includes at least one end-side drilling major cutting edge, a main flute which is assigned to said drilling major cutting edge and is wound at a first helix angle, and a plurality of reaming cutting edges which are arranged circumferentially on the basic body and have in each case one reamer flute which is assigned to the respective reaming cutting edge and is wound at a second helix angle. The reaming cutting edges adjoin the at least one major cutting edge directly in the longitudinal direction. Each reamer flute is merged into the main flute. 1. A drilling/reaming tool comprising: at least one end-side drilling major cutting edge;', 'a main flute which is assigned to said drilling major cutting edge and is wound at a first helix angle; and', 'a plurality of reaming cutting edges which are arranged circumferentially on the basic body and have in each case one reamer flute which is assigned to the respective reaming cutting edge and is wound at a second helix angle,, 'a basic body which extends in a longitudinal direction and includeswherein the reaming cutting edges adjoin the at least one major cutting edge directly in the longitudinal direction, andwherein each reamer flute is merged into the main flute.2. The drilling/reaming tool of wherein the first helix angle is different than the second helix angle.3. The drilling/reaming tool of wherein the second helix angle is smaller than the first helix angle claim 1 , and each reamer flute opens into the main flute.4. The drilling/reaming tool of wherein the first helix angle lies in the range of from about 15° to about 40° and the second helix angle lies in the range of from about 0° to about 20°.5. The drilling/reaming tool of wherein the first helix angle is approximately 30° and the second helix angle is approximately 10°.6. The drilling/reaming tool of wherein the basic body has a nominal diameter and wherein ...

COATED ARTICLE HAVING YTTRIUM-CONTAINING COATINGS APPLIED BY PHYSICAL VAPOR DEPOSITION AND METHOD FOR MAKING THE SAME

A coated article has a substrate and a coating scheme, which has a PVD coating region. The PVD coating region contains aluminum, yttrium, nitrogen and at least one element selected from the group of titanium, zirconium, hafnium, vanadium, niobium, tantalum, chromium, molybdenum, tungsten and silicon. The sum of the aluminum and yttrium contents is between about 3 atomic percent and about 55 atomic percent of the sum of aluminum, yttrium and the other elements. The yttrium content is between about 0.5 atomic percent and about 5 atomic percent of the sum of aluminum, yttrium and the other elements. There is also a method of making the coated article that includes steps of providing the substrate and depositing the above coating scheme with the PVD coating region. 1. A coated article comprising:a substrate;a coating scheme;the coating scheme comprising a PVD coating region applied by physical vapor deposition wherein the coating region containing aluminum and yttrium and nitrogen and at least one element selected from the group consisting of titanium, zirconium, hafnium, vanadium, niobium, tantalum, chromium, molybdenum, tungsten and silicon; andwherein the sum of the aluminum and yttrium contents being between about 3 atomic percent and about 55 atomic percent of the sum of the aluminum, the yttrium and the other elements, and the yttrium content being between about 0.5 atomic percent and about 5 atomic percent of the sum of the aluminum, the yttrium and the other elements.2. The coated article according to wherein the sum of the aluminum and yttrium contents being between about 25 atomic percent and about 45 atomic percent of the sum of the aluminum claim 1 , the yttrium and the other elements; and the PVD coating region having a hardness greater than or equal to about 32 GPa as measured by a nanoindentation technique per ISO 14577-1:2002 standard procedure with an indentation depth equal to 0.25 microns.3. The coated article according to wherein yttrium content ...

Expansion Chuck for Loss-Free Transmission of a Lubricating Medium

A tool holder comprising a body which has a spindle side for fastening the tool holder to a spindle of a machine tool and a tool side for accommodating a tool and comprising a lubricating media passage from the spindle side to the tool side contains a lubricating media bush adjustable in the axial direction in the body, said lubricating media bush opening out on the tool side of the body, wherein a guide for the lubricating media bush is provided in the body, said guide containing a fitting section in which the lubricating media bush is adjustably guided, wherein a seal is provided which seals the lubricating media bush relative to the body. 1. A tool holder comprising a body which has a spindle side for fastening the tool holder to a spindle of a machine tool and a tool side for accommodating a tool and comprising a lubricating media passage from the spindle side to the tool side , wherein a lubricating media bush adjustable in the axial direction is arranged in the body , said lubricating media bush opening out on the tool side of the body , wherein a guide for the lubricating media bush is provided in the body , said guide containing a fitting section in which the lubricating media bush is adjustably guided , wherein a seal is provided which seals the lubricating media bush relative to the body.2. The tool holder as claimed in claim 1 , wherein the seal is fixedly arranged in the body and seals with respect to the lubricating media bush claim 1 , which is accommodated in the seal in an axially displaceable manner.3. The tool holder as claimed in claim 2 , wherein the guide also contains a sealing section which is stepped relative to the fitting section and in which the seal is accommodated.4. The tool holder as claimed in claim 3 , wherein the seal is restrained against a radially extending step which is provided between the sealing section and the fitting section of the guide.5. The tool as claimed in claim 2 , wherein the seal is embodied as a hollow cylinder ...

Cutting insert for tooth cutters

A cutting insert for tooth cutters includes a substantially cuboid basic body. The basic body has two top surfaces on sides opposite each other. The basic body also has four circumferential surfaces which extend in each case from an edge portion of the one top surface to an edge portion of the other top surface. A cutting edge is formed at at least one transition from each circumferential surface to one of the top surfaces.

Cutting Tool Assembly with Protective Member

A cutting tool assembly for use in impinging earth strata includes a holder containing a bore having an axial forward end, and the holder having a forward surface surrounding the bore at the axial forward end of the bore. The assembly also includes a cutting tool being rotatably contained within the bore of the holder, and the cutting tool having a rearwardly facing shoulder. The assembly further includes a protective member positionable between the cutting tool and the holder. The protective member has a first surface adjacent the rearwardly facing shoulder of the cutting tool and a second surface adjacent to the forward surface of the holder, wherein the first surface has a first hardness that is greater than a second hardness of the second surface. In one aspect, the second surface of the protective member is in direct contact with the forward surface of the holder. In another aspect, the first surface of the protective member is in direct contact with the rearwardly facing shoulder of the cutting tool. 1. A cutting tool assembly for use in impinging earth strata , the cutting tool assembly comprising:a holder containing a bore;a cutting tool being rotatably contained within the bore of the holder; anda protective member mediate of the cutting tool and the holder, the protective member having a first surface adjacent the cutting tool and a second surface adjacent the holder, wherein the first surface has a first hardness that is different than a second hardness of the second surface.2. The cutting tool assembly of claim 1 , wherein the first hardness is greater than the second hardness.3. The cutting tool assembly of claim 1 , wherein the first hardness is greater than about 50 RC.4. The cutting tool assembly of claim 1 , wherein the second hardness is less than about 45 RC.5. The cutting tool assembly of claim 1 , wherein the bore of the holder has an axial forward end and the holder has a forward surface surrounding the bore at the axial forward end of the bore ...

DRILL BIT AND METHOD FOR MANUFACTURING

A method for manufacturing a drill bit (), wherein in a first step the chip flutes () are ground into a round rod, in a second step the round rod is ground down to its outer diameter () with simultaneous grinding of the drill-bit back (), and wherein in a third step the drill-bit front () is ground, and a drill bit () having at least one chip flute () and one secondary cutting edge and one drill-bit back () adjoining the secondary cutting edge, the drill-bit back () sloping downwards as the distance from the secondary cutting edge increases, in order to create a clearance that becomes continuously larger as the distance from the point of intersection () of the secondary cutting edge with the drill-bit back () increases. 1. A method for manufacturing a drill bit , comprising the following method steps:a) in a first step, chip flutes are ground into a round rod clamped at an end,b) in a second step, the round rod having the chip flutes is ground, to an outer diameter, together with the grinding of a drill-bit back, andc) in a third step, a drill-bit front is ground.2. The method as claimed in claim 1 , whereinin a first grinding pass one half of the round rod is machined with the three method steps,the round rod is then turned, andin a second grinding pass the other, hitherto unmachined half of the round rod is machined with the three method steps.3. A drill bit manufactured by the method according to claim 1 , the drill bit having:at least one chip flute,a secondary cutting edge that flanks the chip flute, and a drill-bit back that adjoins the secondary cutting edge,wherein the drill-bit back slopes downwards as the distance from the secondary cutting edge increases, in order to create a clearance that becomes continuously larger as the distance from the point of intersection of the secondary cutting edge with the drill-bit back increases.4. The drill bit as claimed in claim 3 , the drill bit having a main cutting edge claim 3 , characterized by a protective land or ...

HYDRAULIC COUPLING SYSTEM FOR COUPLING A SHELL MILL TO AN ADAPTER

A hydraulic coupling system includes an adapter, a shell mill, a threaded member, and a chucking membrane. The adapter includes a tapered pilot disposed on and extending from an end face. The shell mill includes a central counter bore for enabling the pilot of the adapter to be inserted therein. The threaded member includes at least one sealing member and is capable of being threaded into a threaded bore of the shell mill. The chucking membrane includes an intermediate portion disposed between two flanges and forms a fluid-tight channel for hydraulic fluid. The chucking member has a tapered inside surface. When the threaded member is threaded into the shell mill, the tapered surfaces of the pilot and the chucking membrane cause an axial force to seat the end face of the shell mill firmly against the end face of the adapter. 1. A hydraulic coupling system comprising an adapter , a shell mill at least partially received in a pilot of the adapter , and a chucking membrane disposed between the adapter and the shell mill in such a way that a portion of the chucking membrane forms a fluid-tight channel for hydraulic fluid , wherein the coupling system uses hydraulic pressure to cause the shell mill to be brought into firm engagement with the adapter.2. The hydraulic coupling system according to claim 1 , wherein the shell mill includes a central counter bore for enabling the pilot of the adapter to be inserted therein.3. The hydraulic coupling system according to claim 1 , further comprising a threaded member having at least one sealing member for providing a seal for the hydraulic fluid within the coupling system claim 1 , the threaded member capable of being threaded into a threaded bore of the shell mill.4. The hydraulic coupling system according to claim 1 , wherein the chucking membrane includes a first flange at one end claim 1 , a second flange at an opposite end claim 1 , and an intermediate portion disposed between the first and second flanges.5. The hydraulic ...

TOOLHOLDER CONNECTOR AND ASSOCIATED SYSTEM

A toolholder connector having one threaded end and one end with a male quick change portion is threadingly engaged with a first toolholder having a threaded bore. The quick change connector also has a male quick change portion that is engaged within a side activated receiver of a second toolholder. Prior to activating the receiver, an alignment pin associated with the first toolholder is lined up with alignment slot associated with the second toolholder such that when the two are brought together, a pre-determined radial alignment will be retained. 116.-. (canceled)171. A method for attaching a first toolholder having a threaded first receiving bore , wherein the threaded receiving bore is mateable with the male threaded portion of the connector , with a second toolholder having a second receiving bore conforming to a male quick-change portion and further including a side activated receiver is comprised of a rotatable actuating bolt positioned within the second toolholder along a radial axis (R) relative to other longitudinal axis and having a first end with a bolt locking segment defined by at least one angled rearwardly facing surface which translates along the radial axis and contacts the lockable surface of the connector to secure the connector within the toolholder , wherein the method is comprised of the steps of:a) with a connector having one end with a male threaded portion and another end with a male quick change portion, screwing the male threaded portion partially into the threaded receiving bore of the first toolholder;b) insert the male quick-change portion of the connector into the side activated receiver of the second toolholder;c) rotate first toolholder relative to the second toolholder to a relative predetermined radial alignment; andd) activate the quick change locking mechanism to secure first toolholder to the second toolholder in the predetermined radial alignment.18. The method according to claim 17 , wherein the male quick-change portion of ...

DRILLING TOOL

A drilling tool includes at least two chip flutes and a chisel edge with a thinned region. The thinned region merges continuously into the chip flutes in such a way that the thinned region forms the end of the respective chip flute in the region of the chisel edge. 113-. (canceled)14. A drilling tool comprising:at least two chip flutes; anda chisel edge with a thinned region,wherein the thinned region merges continuously into the chip flutes in such a way that the thinned region forms the end of the respective chip flute in the region of the chisel edge.15. The drilling tool of wherein the at least two chip flutes comprise helical chip flutes with a corresponding helical thinned region at the end of the chip flute adjacent to the chisel edge.16. The drilling of wherein the thinned region is of helical shape.17. The drilling tool of wherein the tool comprises a core diameter that is reduced steadily to a reduced core diameter at the chisel edge by the thinned region.18. The drilling tool of wherein the reduced core diameter corresponds to 0.01 to 0.2 times an outside diameter of the drilling tool.19. The drilling tool of wherein the thinned region has a longitudinal extent in the longitudinal direction of the drill which corresponds to 0.1 to 1.5 times an outside diameter of the drilling tool.20. The drilling tool of further comprising an arched major cutting edge.21. The drilling tool of wherein a protective chamfer is provided at an outer end of each major cutting edge.22. The drilling tool of further comprising:a pair of opposing major flanks disposed on opposite sides of the chisel edge; anda step formed between each chip flute and the major flank.23. A process for producing a drilling tool claim 14 , the process comprising:feeding a rotating grinding disk into a drill blank;forming a thinned region near the end of the drill blank by moving the grinding disk in a radial direction of the drill blank; andforming a chip flute continuously adjoining the thinned ...

MACHINING TOOL AND CUTTING HEAD FOR THE MACHINING TOOL

A machining tool includes a holder and a cutting head which can be screwed into the holder. The cutting head includes a cutting-edge region and a coupling region. The coupling region includes a flat contact area facing the holder, a cylindrical thread carrier with an external thread adjoining the flat contact area, and a clamping cone adjoining the thread carrier. The holder includes a planar counter-contact area disposed adjacent the flat contact area of the coupling region, a cylindrical internal thread adjoining the planar counter-contact area, and a hollow-conical cone contact area next to the internal thread. 18-. (canceled)9. A machining tool comprising:a holder; anda cutting head which can be screwed into the holder, the cutting head having a cutting-edge region and a coupling region, a flat contact area facing the holder,', 'a cylindrical thread carrier with an external thread adjoining the flat contact area, and', 'a clamping cone adjoining the thread carrier, and, 'wherein the coupling region comprises a planar counter-contact area disposed adjacent the flat contact area of the coupling region,', 'a cylindrical internal thread adjoining the planar counter-contact area, and', 'a hollow-conical cone contact area next to the internal thread., 'wherein the holder comprises10. The machining tool of wherein the cutting head further comprises a flat collar adjacent the cutting-edge region and having the flat contact area on an end face that is facing away from the cutting-edge region.11. The machining tool of wherein the external thread has an axial length which corresponds at a maximum to half the axial length of the clamping cone.12. The machining tool of wherein the cutting head is formed of hard metal.13. The machining tool of wherein the cutting head comprises a plurality of soldered-on hard-metal cutting edges.14. The machining tool of wherein the tool is formed as a reaming tool with reaming cutting edges claim 9 , respectively having a fine thread as the ...

Milling cutter, especially a round-head milling cutter

The milling cutter, in particular a round-head milling cutter, has a tool head, which extends along an axial direction and has a number of cutting teeth that each have a cutting edge. Chip flutes are located between each of the cutting teeth. The cutting teeth each have a front-side radial portion and a circumferential axial portion. The respective cutting edge and the chip flute are disposed such that they are inclined in opposite directions with respect to the axial direction such that the cutting tooth widens towards a foot region. In another embodiment, the tool head has two parts; a carrier part made of a tool steel, and a cutting part made of hard metal fastened to the carrier part. The milling cutter is distinguished by a long service life with a high cutting rate and a high quality of machining. 112. The milling cutter () as claimed in claim 10 ,wherein{'b': 34', '10, 'the orifices () open out on the front side on the carrier part ().'} 1. Field of the InventionThe invention relates to a milling cutter having the features of the preamble of claim , and of the preamble of claim .2. Description of Related ArtSuch milling cutters, in particular round-head milling cutters, are known, for example, from WO 2008/116446 A1 and DE 697 29 945 T2.In the present case, round-head milling cutters, also known as ball milling cutters, are understood generally to mean those shank milling cutters that have a tool head comprising a number of cutting teeth that each comprise a cutting edge. The respective cutting edge in these cases first runs radially outward, approximately in the radial direction, in a front-side radial portion of the respective cutting tooth, and passes, via an arcuate course, into a circumferential axial portion of the cutting tooth extending substantially in the axial direction. A ball milling cutter in the narrower sense is understood in this case to mean a ball head geometry in which the respective cutting edge runs, immediately from the center of the ...

METHOD FOR MILLING A BLANK IN THE PRODUCTION OF A TURBINE BLADE

A method for milling a blank in the production of a turbine blade which in the final state has at least one blade root for fastening to a carrier and also an adjoining blade body extending in the longitudinal direction includes clamping the blank on its root side in a mount and machining the blank with a milling cutter. Machining the blank includes moving the milling cutter in an advancing direction for roughing machining while superimposing a circular movement as per a trochoidal milling method. 1. A method for milling a blank in the production of a turbine blade which in the final state has at least one blade root for fastening to a carrier and also an adjoining blade body extending in the longitudinal direction , the method comprising:clamping the blank on its root side in a mount; andmachining the blank with a milling cutter, wherein machining the blank comprises moving the milling cutter in an advancing direction for roughing machining while superimposing a circular movement as per a trochoidal milling method.2. The method of wherein machinging the blank comprises machining the blank in the region of the blade body.3. The method of wherein the advancing direction is the longitudinal direction of the blank.4. The method of wherein the turbine blade has a length greater than 40 cm.5. The method of wherein the turbine blade has a length greater than 50 cm.6. The method of wherein the turbine blade has a length in the range of from about 100 cm to about 200 cm.7. The method of wherein the blank is milled down to a predetermined size in only one step with the roughing machining; wherein the material depth to be removed corresponds to an axial cutting depth; and wherein the milling cutter has at least one cutting edge with a cutting edge length which is here engaged claim 1 , in particular over a large part of its cutting edge length claim 1 , with the blank being machined.8. The method of wherein more than 80% of the cutting edge length is engaged with the blank ...

CUTTING INSERT WITH A TITANIUM OXYCARBONITRIDE COATING AND METHOD FOR MAKING THE SAME

A method for making a coated cutting insert, as well as the coated cutting insert, includes a step of providing a substrate which has a surface, and depositing a CVD coating layer of titanium oxycarbonitride. The gaseous mixture from which the coating layer of titanium oxycarbonitride is deposited has a composition of nitrogen, methane hydrogen chloride, titanium tetrachloride, acetonitrile, carbon monoxide, and hydrogen. The coating layer of titanium oxycarbonitride comprises titanium oxycarbonitride whiskers having as measured in a two-dimensional plane view an average length greater than about 1.0 μm, an average width greater than about 0.2 μm, and an average aspect ratio greater than about 2.0. 1. A method for making a coated cutting insert comprising the steps of:providing a substrate having a surface; nitrogen present in an amount between about 5 mol percent and about 40 mol percent,', 'methane present in an amount between about 0.5 mol percent and about 8.0 mol percent,', 'hydrogen chloride optionally present in an amount up to about 5.0 mol percent,', 'titanium tetrachloride present in an amount between about 0.2 mol percent and about 3.0 mol percent,', 'acetonitrile present in an amount between about 0.02 mol percent and about 0.15 mol percent,', 'carbon monoxide present in an amount between about 0.4 mol percent and about 2.0 mol percent, and', 'hydrogen present in an amount between about 41.85 mol percent and about 93.88 mol percent., 'depositing by chemical vapor deposition a coating layer of titanium oxycarbonitride from a gaseous mixture comprising2. The method according to wherein the gaseous mixture to deposit the coating layer of titanium oxycarbonitride comprises: nitrogen present in an amount between about 10 mol percent and about 35 mol percent claim 1 , methane present in an amount between about 1 mol percent and about 6.0 mol percent claim 1 , hydrogen chloride optionally present in an amount up to about 4.0 mol percent claim 1 , titanium ...

AUTOBALANCING SYSTEM FOR BORING TOOL AND BORING TOOL INCORPORATING SAME

A boring head comprises a housing disposed about a central longitudinal axis and a movement transmission mechanism disposed at least one of on or in the housing. The housing includes a first end adapted to be coupled to a machine tool and an opposite second end having a cutting insert movably coupled thereto. The movement transmission mechanism comprises a rotatable member mounted to be rotatable relative to the housing, a balancing mass, and a main shaft disposed in the housing. The main shaft is rotatable about the longitudinal axis and operationally coupled to the ring, the balancing mass, and the cutting insert. Rotation of the rotatable member a predetermined amount causes movement of the cutting insert a corresponding predetermined amount in a first radial direction with respect to the longitudinal axis and movement of the balancing mass a corresponding predetermined amount in a second radial direction opposite the first radial direction. 1. A boring head comprising:a housing disposed about a central longitudinal axis, the housing having a first end adapted to be coupled to a machine tool and an opposite second end, the opposite second end having a cutting insert movably coupled thereto; and a rotatable member ring mounted to be rotatable relative to the housing;', 'a balancing mass; and', 'a main shaft disposed in the housing, the main shaft being rotatable about the longitudinal axis and operationally coupled to the ring, the balancing mass, and the cutting insert,, 'a movement transmission mechanism disposed at least one of on or in the housing, the movement transmission mechanism comprisingwherein rotation of the rotatable member a predetermined amount causes movement of the cutting insert a corresponding predetermined amount in a first radial direction with respect to the longitudinal axis and movement of the balancing mass a corresponding predetermined amount in a second radial direction opposite the first radial direction.2. The boring head of wherein ...

MULTILAYER COATED WEAR-RESISTANT MEMBER AND METHOD FOR MAKING THE SAME

A coated wear-resistant member, as well as a method for making the same, includes a substrate and a coating scheme. The coating scheme has a region of alternating coating sublayers. One coating sublayer is TiAlSiN wherein 40 atomic percent≦x≦80 atomic percent; 15 atomic percent≦y≦55 atomic percent; 4 atomic percent≦100-x-y≦15 atomic percent. The other coating sublayer is TiAlN wherein 45 atomic percent≦p≦100 atomic percent. The method for making a coated wear-resistant member includes the steps of providing the substrate, and depositing the region of alternating coating sublayers. 1. A coated wear-resistant member comprising:a substrate having a substrate surface; and{'sub': x', 'y', '100-x-y', 'p', '100-p, 'a coating scheme comprising a region of alternating coating sublayers wherein one coating sublayer being TiAlSiN wherein 40 atomic percent≦x≦80 atomic percent; 15 atomic percent≦y≦55 atomic percent; 4 atomic percent≦100-x-y≦15 atomic percent, and other coating sublayer being TiAlN wherein 45 atomic percent≦p≦100 atomic percent.'}2. The coated wear-resistant member of wherein the one coating sublayer TiAlSiN having the following composition: 50 atomic percent≦x≦70 atomic percent; 20 atomic percent≦y≦40 atomic percent; 7 atomic percent≦100-x-y≦10 atomic percent.3. The coated wear-resistant member of wherein the one coating sublayer TiAlSiN having the following composition: 55 atomic percent≦x≦65 atomic percent; 25 atomic percent≦y≦35 atomic percent; 8 atomic percent≦100-x-y≦9 atomic percent.4. The coated wear-resistant member of wherein the other coating sublayer TiAlN having the following composition: 45 atomic percent≦p≦65 atomic percent.5. The coated wear-resistant member of wherein the other coating sublayer TiAlN having the following composition: p equal to 100 atomic percent.6. The coated wear-resistant member of wherein the coating scheme further comprises a bonding coating region mediate of the substrate surface and the region of alternating coating ...

TITANIUM DIBORIDE-SILICON CARBIDE COMPOSITES USEFUL IN ELECTROLYTIC ALUMINUM PRODUCTION CELLS AND METHODS FOR PRODUCING THE SAME

Composite materials comprising titanium diboride, silicon carbide and carbon-containing scavenger additions are useful in electrolytic aluminum production cells. The carbon-containing scavenger additions may include tungsten carbide, boron carbide and/or carbon. The amounts of titanium diboride, silicon carbide and carbon-containing scavenger are controlled in order to provide optimum perfonnance. The titanium diboride/silicon carbide composite materials may be used as cathodes in electrolytic aluminum production cells and are electrically conductive, exhibit desirable aluminum wetting behavior, and are capable of withstanding exposure to molten cryolite, molten aluminum and oxygen at elevated temperatures during operation of such cells. 1. A composite cathode for use in an electrolytic aluminum production cell , the composite cathode comprising from about 70 to about 98 weight percent titanium diboride , from about 2 to about 30 weight percent silicon carbide , and at least about 0.2 weight percent of at least one carbon-containing scavenger additive.2. The composite cathode of claim 1 , wherein the TiBcomprises from about 85 to about 98 weight percent claim 1 , and the silicon carbide comprises from about 3 to about 10 weight percent of the composite cathode.3. The composite cathode of claim 1 , wherein the carbon-containing scavenger additive comprises tungsten carbide claim 1 , boron carbide and/or carbon.4. The composite cathode of claim 1 , wherein the carbon-containing scavenger additive comprises tungsten carbide in an amount of from about 1 to about 10 weight percent of the composite cathode.5. The composite cathode of claim 4 , wherein the tungsten carbide comprises from about 2 to about 5 weight percent.6. The composite cathode of claim 1 , wherein the carbon-containing scavenger additive comprises boron carbide in an amount of from about 2 to about 10 weight percent of the composite cathode.7. The composite cathode of claim 6 , wherein the boron carbide ...

CUTTING INSERT ASSEMBLY AND COMPONENTS THEREOF

A cutting assembly useful for the chipforming removal of material from a workpiece at the cutting insert-workpiece interface. The cutting assembly has a holder with a coolant passage and a seat. As one option, a stud extends away from the seat and facilitates coolant flow to an insert locking cap, which attaches to the stud. The insert locking cap directs coolant flow toward the cutting insert-workpiece interface. As another option, a diverter plate has a bottom surface with a bowl and an arcuate forward surface with one or more openings. Coolant flows from the coolant passage into the bowl then exits through at least one opening in the arcuate forward surface towards the cutting insert-workpiece interface. 1. A cutting assembly for the chipforming removal of material from a workpiece at the cutting insert-workpiece interface , the cutting assembly comprising:a holder containing a coolant passage and a seat;a stud being received within the coolant passage and extending away from the seat;a cutting insert having a rake surface and a central aperture wherein the stud extends through the central aperture of the cutting insert;{'b': 60', '188, 'an insert locking cap engaging the stud and exerting a biasing force against the rake surface of the cutting insert so as to securely retain the cutting insert in the seat (), the insert locking cap containing a side opening in communication with the central aperture () of the cutting insert; and'}the stud containing an exterior longitudinal trough with an entrance in the coolant passage and an exit adjacent the side opening whereby coolant flows from the coolant passage into the exterior longitudinal troughs exiting into the central aperture of the cutting insert and passing into and spraying out of the side opening toward the cutting insert-workpiece interface.2. The cutting assembly according to wherein the stud having a smooth region wherein the smooth region contains the exterior longitudinal trough claim 1 , and a portion ...

MILLING CUTTER FOR CUTTING A NINETY-DEGREE SHOULDER IN A WORKPIECE

A milling cutter includes a shank portion and a cutting portion having a cylindrical outer surface. The milling cutter includes a plurality of major cutting edges extending from an end face toward the shank portion, and a plurality of minor cutting edges disposed at the end face of the cutting portion. A relief surface is formed in the cylindrical outer surface proximate a corner of the milling cutter such that the primary cutting edges forms an angle equal to 90° with respect to the end face of the milling cutter. As a result, the milling cutter is capable of cutting a perfect 90° shoulder in a workpiece. 2. The milling cutter according to claim 1 , wherein the end face defines a positive dish angle with respect to a plane perpendicular to the central claim 1 , longitudinal axis.3. The milling cutter according to claim 2 , wherein the corner is formed at an angle less than 90°.4. The milling cutter according to claim 1 , wherein an end portion of the at least one minor cutting edge is planar when viewed from the end face.5. The milling cutter according to claim 1 , wherein the milling cutter includes a plurality of major cutting edges separated from each other by a corresponding number of spiral flutes. The invention relates generally to milling cutters and, more particularly, relates to an end milling cutter having a square footprint and capable of cutting a ninety degree shoulder in a workpiece.Milling is a cutting machining process using a rotating tool. In that procedure, the cutting edges produce the cutting movement by virtue of their rotation about the central axis of the tool. The advance movements can take place in various directions. They are effected by the tool or by the workpiece or even by both. In contrast to turning and drilling, the cutting edges are not constantly in engagement. After a cut on the workpiece, they are returned in the disengaged condition to the point of first cut. As a result, they can cool down and discharge the chips from the ...

Coated Pelletizing Dies

Pelletizing ring extrusion dies comprising a die body having a plurality of holes, wherein each hole has surface at least partially coated with a low-friction coating. The low-friction coatings reduce surface temperatures during operation of the dies, which reduces volatilization and inconsistent flow of the material being extruded. The pelletizing ring extrusion dies possess improved tool life due to the low-friction coatings. 1. A pelletizing ring extrusion die comprising a die body having a plurality of extrusion holes , wherein each hole comprises a surface with a low-friction coating deposited thereon.2. The pelletizing ring extrusion die according to claim 1 , wherein the low-friction coating has a coefficient of friction less than 0.5.3. The pelletizing ring extrusion die according to claim 1 , wherein the hole has a tapered inlet on an inner face of the die body and extends through to an outer face of the die body.4. The pelletizing ring extrusion die according to claim 3 , wherein the low-friction coating is on at least the tapered inlet.5. The pelletizing ring extrusion die according to claim 1 , wherein the low-friction coating is applied to the internal surface of the hole.6. The pelletizing ring extrusion die of claim 1 , wherein the die body comprises steel claim 1 , stainless steel or superalloys.7. The pelletizing ring extrusion die of claim 1 , wherein the low-friction coating comprises a metal claim 1 , ceramic or composite.8. The pelletizing ring extrusion die according to claim 1 , wherein the low-friction coating has a thickness of 20 to 200 microns.9. A method of coating a pelletizing ring extrusion die claim 1 , comprising:applying a low-friction coating to a portion of the pelletizing ring-extrusion die at a temperature less than 520° C., wherein the pelletizing die comprises a plurality of extrusion holes and the low-friction coating is applied to at least a portion of a surface of each hole.10. The method according to claim 9 , wherein the ...

COATED PELLETIZING EXTRUSION DIES AND METHOD FOR MAKING THE SAME

A pelletizing extrusion die comprising a die body contains a plurality of extrusion holes. Each of the extrusion holes is defined by a defining surface of the die body wherein at least a portion of the defining surface has a low-friction coating deposited thereon. A method for applying the low-friction coating to the defining surface wherein the applying step occurs at a temperature equal to less than about C. 1. A pelletizing extrusion die comprising a die body containing a plurality of extrusion holes , and wherein each of the extrusion holes being defined by a defining surface of the die body wherein at least a portion of the defining surface having a low-friction coating deposited thereon.2. The pelletizing extrusion die according to wherein the low-friction coating has coefficient of friction as measured according to ASTM G99-May (2010) [“Standard Test Method for Wear Testing with a Pin-on-Disk Apparatus” equal to less than about 0.5.3. The pelletizing extrusion die according to wherein the die body having an inner face and an outer face claim 1 , the defining surface having a generally frusto-conically shaped entrance section adjacent to the inner face and an exit section extending from the entrance section to the outer face.4. The pelletizing extrusion die according to wherein the low-friction coating being on the entrance section of the defining surface.5. The pelletizing extrusion die according to wherein the low-friction coating being on the entrance section of the defining surface and the exit section of the defining surface.6. The pelletizing extrusion die according to wherein the low-friction coating being on at least a part of the inner face.7. The pelletizing extrusion die according to wherein the die body comprising any one of the following: steel. stainless steel and superalloy.8. The pelletizing extrusion die according to wherein the low-friction coating comprising any one of the following: metal claim 1 , ceramic or composite.9. The pelletizing ...

Rotary tool and method of producing

Rotary tool, such as a drill or milling cutter, having a main tool body, which extends along a center longitudinal axis, which has a flute and which, at a distance from the center longitudinal axis, has an insert seat which is introduced into the flute wall and in which a cutting insert, in particular made of a superhard material such as PCD or PCBN, is fastened integrally, wherein, for fixing both a radial and also an axial position of the cutting insert, the insert seat has an abutment wall which has a contour for positioning the cutting insert in a rotationally locked manner.

INSERT DESIGN FEATURE FOR SIDE PRESSING TECHNOLOGY

The invention relates to an indexable cutting insert having two faces, having a passage opening which extends from one face to the other, having a plurality of cutting corners which each have, toward the face, a continuously curved cutting edge, and a plurality of flanks which are arranged in pairs on one side and on the other side of the cutting corners. One cutting edge has a positive clearance angle and the other has a negative clearance angle. Each cutting corner is formed by two partial surfaces which adjoin one another along a line running parallel to the central axis of the passage opening. 1. An indexable cutting insert having two faces , having a passage opening which extends from one face to the other , having a plurality of cutting corners which each have , toward the face , a continuously curved cutting edge , and a plurality of flanks which are arranged in pairs on one side and on the other side of the cutting corners , wherein one has a positive clearance angle and the other has a negative clearance angle , wherein each cutting corner has two partial surfaces which adjoin one another along a line running parallel to the central axis of the passage opening.2. The indexable cutting insert as claimed in claim 1 , wherein the partial surfaces merge continuously into one another at the two cutting edges claim 1 , and meet one another at an obtuse angle between the two cutting edges.3. The indexable cutting insert as claimed in claim 1 , wherein the two partial surfaces merge continuously into the respectively adjoining flank.4. The indexable cutting insert as claimed in claim 1 , wherein the outer contour has claim 1 , in the region of a cutting corner and as viewed in a section perpendicular to the central axis of the passage opening and at a level between the two faces claim 1 , a radius of curvature smaller than the radius of curvature of the cutting edge in the region of the cutting corner.5. The indexable cutting insert as claimed in claim 1 , wherein ...

DOUBLE-SIDED, INDEXABLE CUTTING INSERT WITH RAMPING CAPABILITY AND CUTTING TOOL THEREFOR

A double-sided, indexable cutting insert for a milling cutter includes a first surface, a second surface, and side surfaces. Major cutting edges are defined at an intersection between the first and second surfaces and side surfaces. Minor cutting edges and ramping cutting edges are defined at the intersection between the first and second surfaces and side surfaces. The cutting insert is mounted in a milling cutter having a bottom seating surface formed at an angle with respect to a central, rotational axis of the milling cutter, which provides superior performance for both milling and ramping cutting operations. 1. A double-sided , indexable cutting insert for a milling cutter , comprising:a first surface, a second surface opposite the first surface, a first pair of opposing side surfaces and a second pair of opposing side surfaces, the first surface including a seating surface defining a plane;a major cutting edge defined at an intersection between the first and second surfaces and the first pair of opposing side surfaces;a corner radius connecting the first pair of opposing side surfaces to the second pair of opposing side surfaces, and a tangency point delineating the corner radius from the first pair of opposing side surfaces;a minor cutting edge defined at an intersection between the first and second surfaces and a first planar facet surface of the second pair of opposing side surfaces; anda ramping cutting edge defined at the intersection between the first and second surfaces and a second planar facet surface of the second pair of opposing side surfaces, the second planar facet surface being radially inward with respect to the first planar facet surface,wherein the cutting insert is capable of performing both milling and ramping cutting operations.2. The cutting insert of claim 1 , wherein a distance between the plane of the seating surface and the tangency point of one of the opposing pair of side surfaces is greater than a distance between the plane of the ...

CUTTING TOOL HAVING AT LEAST PARTIALLY MOLDED BODY AND METHOD OF MAKING SAME

A cutting tool for performing cutting operations on a workpiece when the cutting tool is rotated about a central axis by a machine tool, the cutting tool includes a generally cylindrical body disposed about the central axis. The generally cylindrical body includes a first end and an opposite second end. The cutting tool further includes a cutting portion and a mounting portion. The cutting portion is disposed at or about the first end of the generally cylindrical body and includes a number of cutting edges structured to engage the workpiece during cutting operations. The mounting portion is disposed at or about the opposite second end of the generally cylindrical body and is structured to be coupled to the machine tool. At least a portion of the generally cylindrical body comprises a molded portion formed via a molding process about the cutting portion in a manner that couples the cutting portion to the generally cylindrical body. 1. A cutting tool for performing cutting operations on a workpiece when the cutting tool is rotated about a central axis by a machine tool , the cutting tool comprising:a generally cylindrical body disposed about the central axis, the generally cylindrical body having a first end and an opposite second end;a cutting portion disposed at or about the first end of the generally cylindrical body, the cutting portion having a number of cutting edges structured to engage the workpiece during cutting operations; anda mounting portion disposed at or about the opposite second end of the generally cylindrical body, the mounting portion being structured to be coupled to the machine tool,wherein at least a portion of the generally cylindrical body comprises a molded portion formed via a molding process, andwherein the molded portion is formed about the cutting portion in a manner that couples the cutting portion to the generally cylindrical body.2. The cutting tool of wherein the molded portion comprises fibers or particles disposed randomly or in a ...

Manufacturing of holemaking tools

A process for producing a tool having a main body which extends in a longitudinal direction and at least one blade for machining a workpiece includes providing a base coating on the tool; grinding the at least one blade in a manner that removes the base coating in the region of the at least one blade; and providing a second, fine coating, to the at least one ground blade.

Grinding Tool

A grinding tool for impinging a material includes a tool body having a top surface and a bottom surface, the tool body defining a pocket at a leading edge of the top surface and the pocket having a mounting surface. The grinding tool also includes a plurality of inserts mounted on the mounting surface of the pocket of the tool body, wherein each of the plurality of inserts includes a base mounting surface adjacent the mounting surface of the pocket of the tool body, a main cutting face generally opposite the base mounting surface, and a leading face positioned adjacent the leading edge of the top surface of the tool body. The leading face terminates in a protective base flange that is structured and arranged to substantially cover the mounting surface of the pocket of the tool body adjacent the leading edge of the tool body. 1. A grinding tool for impinging a material comprising:a tool body having a top surface and a bottom surface, the tool body defining a pocket at a leading edge of the top surface, the pocket having a mounting surface; and a base mounting surface adjacent the mounting surface of the pocket of the tool body;', 'a main cutting face generally opposite the base mounting surface; and', 'a leading face positioned adjacent the leading edge of the top surface of the tool body, the leading face terminating in a protective base flange that is structured and arranged to substantially cover the mounting surface of the pocket of the tool body adjacent the leading edge of the tool body., 'a plurality of inserts mounted on the mounting surface of the pocket of the tool body, each of the plurality of inserts comprising2. The grinding tool of claim 1 , wherein the main cutting face includes a peaked cutting edge.3. The grinding tool of claim 1 , wherein the leading face includes a nose portion.4. The grinding tool of claim 3 , wherein the protective base flange includes a first flange portion and a second flange portion claim 3 , the first flange portion and the ...

CUTTING ASSEMBLY WITH ENHANCED COOLANT DELIVERY

A toolholder has a head portion including a slot separating the head portion into a lower extension with a lower seat and an upper extension with an upper seat to retain a cutting insert. The head portion contains a coolant entrance passage, which receives coolant from a coolant source, and a coolant delivery passage, which discharges coolant toward a cutting insert. The cutting insert includes a top surface with an upwardly extending protuberance that can be engaged by the toolholder to rigidly mount the cutting insert in the head portion of the toolholder. The cutting insert further includes a coolant channel formed in the top surface of the cutting insert that is positioned directly opposite of the coolant discharge to enhance the flow rate of the coolant delivered to the cutting insert-workpiece interface. 1. A cutting assembly , comprising:a toolholder and a cutting insert;the toolholder having an axial forward end and an axial rearward end, the toolholder having a head portion at the axial forward end and a shank portion at the axial rearward end;the head portion containing a slot separating the head portion into a lower section and an upper section, the lower section defining a lower seat and the upper section adapted to retain the cutting insert therebetween;the head portion having an exit adapted to direct coolant to the cutting insert;the cutting insert includes a top surface with an upwardly extending protuberance that can be engaged by the toolholder to rigidly mount the cutting insert in the head portion of the toolholder;the cutting insert further including a coolant channel formed in the top surface of the cutting insert,wherein the coolant channel is positioned directly opposite of the exit when mounted in the toolholder, thereby causing the coolant channel to act as a nozzle to enhance the flow rate of the coolant delivered to an interface between the cutting insert and a workpiece.2. The cutting assembly according to claim 1 , wherein the coolant ...

ROTARY CUTTING TOOL WITH COOLANT PASSAGE DISPOSED IN NON-CIRCULAR RECESS FOR REDUCING STRESS

A cutting tool includes a tool body having a plurality of pockets for receiving cutting inserts. Each pocket includes a bottom support surface, an axial support surface, a radial support surface and a corner relief between the bottom support surface and the radial support surface. A non-circular recess is formed proximate the pocket, and a coolant passage is disposed within the recess. The recess reduces a tensile stress of the cutting tool during a machining operation 2. The cutting tool of claim 1 , wherein the non-circular recess has a minimum depth that is approximately one-half a maximum width of the recess.3. The cutting tool of claim 1 , wherein the recess is oblong claim 1 , oval or elliptical shaped.4. The cutting tool of claim 1 , wherein a major axis of the non-circular recess is substantially aligned with a rotational axis of the cutting tool.5. The cutting tool of claim 1 , wherein a center of the non-circular recess is substantially aligned with a center of the at least one coolant passage.7. The cutting tool of claim 6 , wherein the non-circular recess has a minimum depth that is approximately one-half a maximum width of the recess.8. The cutting tool of claim 6 , wherein the recess is oblong claim 6 , oval or elliptical shaped.9. The cutting tool of claim 6 , wherein a major axis of the non-circular recess is substantially aligned with a rotational axis of the cutting tool.10. The cutting tool of claim 6 , wherein a center of the non-circular recess is substantially aligned with a center of the at least one coolant passage. Rotary cutting tools, such as helical end mills and face mills, are well known in the industry. Conventional helical end mills include those shown on pages 182-216 in Kennametal's Milling Catalog No. 5040, copyright 1995.One form of helical mill that has been in use for years is a helical mill where the cutting edge of each insert is axially spaced apart from the cutting edge of the next adjacent insert and where the inserts in ...

CUTTING TOOL WITH POCKET FEATURE FOR REDUCING STRESS

A cutting tool includes a tool body having a plurality of pockets for receiving cutting inserts. Each pocket includes a bottom support surface, an axial support surface, a radial support surface and a corner relief between the bottom support surface and the axial support surface. A pocket feature is at least partially located proximate the pocket, and more specifically, at least partially located on a wall between the axial support surface and the radial support surface for reducing a tensile stress of the cutting tool during a machining operation 1. A cutting tool comprising:a tool body including a plurality of pockets for receiving cutting inserts, each pocket comprising a bottom support surface, an axial support surface, a radial support surface and a corner relief between the bottom support surface and the axial support surface; anda pocket feature at least partially located proximate the pocket, wherein the pocket feature reduces a tensile stress of the cutting tool during a machining operation.2. The cutting tool of claim 1 , wherein the pocket feature is in the form of a round dimple having a depth that is approximately one-half a width of the recess.3. The cutting tool of claim 1 , wherein the pocket feature is in the form of a recess having a depth that is approximately one-half a width of the recess.4. The cutting tool of claim 3 , wherein the recess is teardrop shaped.5. The cutting tool of claim 3 , wherein the recess extends into a flute of the tool body.6. The cutting tool of claim 1 , wherein the pocket feature is located on a wall between the radial support surface and the axial support surface.7. The cutting tool of claim 1 , wherein the pocket feature has one or more curved surfaces. Cutting tools, such as milling cutters, are rotatable tools of cylindrical, conical, shaped or disk form, having a plurality of cutting edges. Such cutters are available in many forms, such as plain cylindrical, side milling cutters, face and end mills, formed cutters, ...

ANTI-ROTATION MOUNTING MECHANISM FOR A ROUND INSERT

An anti-rotation mounting mechanism is provided between an indexable insert and an insert-receiving pocket in the body of a machine tool, such as a milling cutter. The mechanism includes a plurality of curved stop surfaces uniformly disposed around the side surface of the insert, a portion of which is obliquely oriented with respect to the side surface of the insert, and an anti-rotation feature in the pocket of the tool body having a pair of engagement portions that are substantially complementary in shape to that of the stop surfaces for forming an interference joint between the pocket and the insert. The anti-rotation feature further includes a central planar portion that does not engage the stop surfaces. The mechanism effectively prevents rotation between the insert and pocket without the formation of point-type, localized stresses which can chip or break the insert. 1. An anti-rotation mounting mechanism between a round cutting insert and an insert-receiving pocket of a tool body , said insert including an upper surface that terminates in a cutting edge , a lower surface , and a side surface between said upper and lower surfaces , the mechanism comprising:a plurality of curved stop surfaces disposed around the side surface; andan anti-rotation feature in the insert-receiving pocket of the tool body for engaging the stop surfaces to form an interference joint, the anti-rotation feature including a pair of curved engagement portions separated by a planar central portion,wherein the stop surfaces engage the engagement portions of the anti-rotation feature to form an interference joint, andwherein the stop surfaces do not engage the planar central portion of the anti-rotation feature.2. The anti-rotation mounting mechanism of claim 1 , wherein the cutting edge of said insert is rounded.3. The anti-rotation mounting mechanism of claim 1 , wherein the anti-rotation feature is integrally formed in a lower portion of a side surface of the pocket claim 1 , and wherein ...

FUNCTIONALLY GRADED COATING

In one aspect, composite articles are described comprising multifunctional coatings. A composite article described herein, in some embodiments, comprises a substrate and a coating adhered to the substrate, the coating comprising an inner layer and an outer layer, the inner layer comprising a presintered metal or alloy and the outer layer comprising particles disposed in a metal or alloy matrix. 1. A composite article comprising:a substrate; anda coating adhered to the substrate, the coating comprising an inner layer and an outer layer, the inner layer comprising a metal or alloy layer having porosity less than 40% by volume and the outer layer comprising particles disposed in a metal or alloy matrix.2. The composite article of claim 1 , wherein the metal or alloy layer is substantially fully dense.3. The composite article of claim 1 , wherein the porosity of the metal or alloy layer is infiltrated with the metal or alloy matrix of the outer layer to provide a substantially fully dense inner layer.4. The composite article of claim 1 , wherein the inner layer is metallurgically bonded to the substrate.5. The composite article of claim 1 , wherein the metal or alloy layer is a presintered metal or alloy.6. The composite article of claim 2 , wherein the metal or alloy layer is deposited by one of weld overlay claim 2 , plasma transferred arc claim 2 , thermal spray claim 2 , cold spray claim 2 , laser cladding claim 2 , infrared cladding or induction cladding.7. The composite article of claim 2 , further comprising an interfacial transition region between the inner layer and the outer layer.8. The composite article of claim 7 , wherein the interfacial transition region has a thickness ranging from about 1 μm to about 150 μm.9. The composite article of claim 1 , wherein the particles of the outer layer comprise one or more metal carbides claim 1 , metal nitrides claim 1 , metal borides claim 1 , metal silicides claim 1 , cemented carbides claim 1 , cast carbides or ...

HIGH FEED CUTTING INSERT

A replaceable insert for tipped cutting tools is described. The replaceable insert has a peripheral wall bounding a first surface and an opposite second surface in which at least one of the first and second surfaces is convex. 1. A replaceable insert for tipped cutting tools , said replaceable insert comprising a peripheral wall bounding a first surface and an opposite second surface at least one of which surfaces is convex.2. The insert according to claim 1 , wherein a maximum depth of convexity of said convex surface is near the center of maximum stress in the insert material thereby reducing the risk of breakage.3. The insert as claimed in claim 1 , wherein a curved cutting edge is formed circumferentially by the intersection of the entire peripheral wall and at least the first convex surface.4. The insert as claimed in claim 1 , wherein said second surface is also convex and a curved cutting edge is formed circumferentially by the intersection of the entire peripheral wall and each of the first and second convex surfaces.5. The insert as claimed in claim 1 , wherein a circumferential tunnel surrounds at least the first convex surface along the cutting edge claim 1 , providing a positive cutting angle and chip-breakage properties.6. The insert as claimed in claim 1 , wherein said peripheral wall is defining a polygonal shape.7. The insert as claimed in claim 6 , wherein said polygonal shape has a rotational symmetry and the insert is indexable about an axis of said rotational symmetry.8. The insert as claimed in claim 6 , wherein said polygonal shape comprises main polygon side walls (X) claim 6 , each divided into two sub-faces (Xa claim 6 , Xb) with an angular shift therebetween.9. The insert as claimed in claim 8 , wherein corner regions formed between any two adjacent side walls or sub-faces are curved in the shape of a circular arc.10. The insert as claimed in claim 6 , wherein said polygonal shape is triangular or square.11. The insert as claimed in claim 1 ...

Fine machining tool

A reamer having a cylindrical cutter part ( 1 ) having a plurality of cutting bodies ( 4 ) arranged on the cylinder circumferential surface, the cutting bodies ( 4 ) having a cutter region ( 12 ) realized as a cutting strip and having a guide region ( 13 ) that adjoins the cutter region in a continuous manner in the direction of feed ( 10 ).

CEMENTED CARBIDE BODY AND APPLICATIONS THEREOF

In one aspect, cemented carbide bodies are provided. A cemented carbide body described herein, in some embodiments, comprises a tungsten carbide phase, a binder phase comprising at least one metal of the iron group or an alloy thereof, a solid solution phase of carbides of zirconium and niobium (Zr,Nb)C and cubic carbides in an amount ranging from about 0.5 volume percent to about 6 volume percent. 1. A cemented carbide body comprising:a tungsten carbide phase;a binder phase comprising at least one metal of the iron group or an alloy thereof;a solid solution phase of carbides of zirconium and niobium (Zr,Nb)C; andcubic carbides in an amount ranging from about 0.5 volume percent to about 6 volume percent.2. The cemented carbide body of claim 1 , wherein the cubic carbides are present in an amount ranging from greater than 2 volume percent to 5 volume percent.3. The cemented carbide body of claim 1 , wherein the cubic carbides consist of the carbides of Zr and Nb.4. The cemented carbide body of claim 1 , wherein the binder phase is present in an amount ranging from about 5 mass percent to about 15 mass percent.5. The cemented carbide body of claim 1 , wherein the binder phase comprises cobalt claim 1 , a cobalt-nickel alloy or a cobalt-nickel-iron alloy.6. The cemented carbide body of claim 1 , wherein the body does not comprise a binder enriched zone.7. The cemented carbide body of having a hardness ranging from about 1200 to about 1600 HV30.8. The cemented carbide body of having a hardness ranging from about 1280 to about 1380 HV30.9. The cemented carbide body of having a coercivity (H) ranging from about 120 Oe to about 170 Oe.10. The cemented carbide body of having a coercivity ranging from about 130 Oe to about 160 Oe.11. The cemented carbide body of claim 1 , wherein Nb is present in an amount ranging from about 0.5 mass percent to about 1.5 mass percent.12. The cemented carbide body of claim 1 , wherein Zr is present in an amount ranging from about 0.3 mass ...

Plow Blade Assembly

A plow blade assembly includes a moldboard adapter plate, a cover plate, and an articulating blade mounted between the moldboard adapter plate and the cover plate. The articulating blade includes a bushing assembly mounted therein, wherein the bushing assembly includes an elastomeric bushing and a non-elastomeric spacer non-centrally located in the elastomeric bushing. In one aspect, the non-elastomeric spacer is positioned adjacent a top edge of the elastomeric bushing. 1. A plow blade assembly , comprising:a moldboard adapter plate;a cover plate; andan articulating blade mounted between the moldboard adapter plate and the cover plate, the articulating blade including a bushing assembly mounted therein, wherein the bushing assembly includes an elastomeric bushing and a non-elastomeric spacer non-centrally located in the elastomeric bushing.2. The plow blade assembly of claim 1 , wherein the moldboard adapter plate includes a first aperture and the cover plate includes a second aperture claim 1 , the first aperture and the second aperture being generally axially aligned with the non-elastomeric spacer of the bushing assembly.3. The plow blade assembly of claim 2 , wherein a mounting bolt extends through the first aperture claim 2 , second aperture claim 2 , and the non-elastomeric spacer for connecting the moldboard adapter plate claim 2 , cover plate claim 2 , and the articulating blade.4. The plow blade assembly of claim 1 , wherein the non-elastomeric spacer is positioned adjacent a top edge of the elastomeric bushing.5. The plow blade assembly of claim 1 , wherein the elastomeric bushing is generally square.6. The plow blade assembly of claim 5 , wherein the non-elastomeric spacer is generally square.7. The plow blade assembly of claim 6 , wherein a top portion of the non-elastomeric spacer is generally contiguous with a top edge of the elastomeric bushing.8. The plow blade assembly of claim 1 , wherein the articulating blade is structured and arranged for ...

ROTARY TOOL AND CUTTING HEAD FOR SUCH A ROTARY TOOL

A rotary tool extends in the direction of an axis of rotation and includes a carrier having a coupling receptacle disposed at an end face, the carrier having a carrier cross section. The coupling receptacle is delimited in the entire region of the carrier cross section by an outer web having an end face forming a planar bearing area. The coupling receptacle is delimited by side walls which extend step-free from the bearing area to a bottom area and include a pair of opposing clamping segments extending in the circumferential direction and a pair of opposing torque segments arranged at an angle thereto. The tool also includes a cutting head exchangeably fastened to the carrier, the cutting head having a coupling pin disposed in the coupling receptacle. At least one of the pairs of segments is oriented inclined in relation to the axis of rotation. 1. A rotary tool which extends in the direction of an axis of rotation , the rotary tool comprising:{'b': '8', 'a carrier having a coupling receptacle disposed at an end face; the carrier having a carrier cross section, the coupling receptacle being delimited in the entire region of the carrier cross section by an outer web having an end face forming a planar bearing area, the coupling receptacle being delimited by side walls extending step-free from the bearing area to a bottom area; and'}a cutting head exchangeably fastened to the carrier at the end face, the cutting head having a coupling pin disposed in the coupling receptacle, the side walls have a pair of opposing clamping segments and a pair of opposing torque segments,', 'the clamping segments extend in the circumferential direction and serve for the radial centering of the cutting head,', 'the torque segments are arranged at an angle thereto and serve for the torque transmission, and', 'at least one of the pairs of segments is oriented such that it is inclined in relation to the axis of rotation to form an undercut for axial pull-out prevention., 'wherein2. The ...

TWIST DRILL AND METHOD FOR THE PRODUCTION THEREOF

A twist drill includes a drill body having a chip flute extending a distance along the drill body. The chip flute has a leading edge and a run-out edge running along the chip flute. The run-out edge is disposed behind the leading edge in a direction of rotation of the twist drill. The chip flute, viewed cross-sectionally in a direction perpendicular to the longitudinal axis, includes a first wall portion and a second wall portion. The first wall portion extends along a curve between the run-out edge and the second wall portion. The second wall portion extends in a straight line from between the leading edge and the first wall portion. The first wall portion and the second wall portion are disposed adjoining one another and together define a J-shaped cross-sectional profile perpendicular to the longitudinal axis. 120-. (canceled)21. A twist drill comprising:a drill body of generally cylindrical shape disposed about a longitudinal axis, the drill body having a first end configured to be coupled to a machine tool and an opposite second end, the drill body including a chip flute formed therein, the chip flute extending a distance along the drill body, the chip flute having a leading edge and a run-out edge running along the chip flute, the run-out edge disposed behind the leading edge in a direction of rotation of the twist drill, wherein:the chip flute, viewed cross-sectionally in a direction perpendicular to the longitudinal axis, includes a first wall portion and a second wall portion,the first wall portion extends along a curve between the run-out edge and the second wall portion,the second wall portion extends in a straight line from between the leading edge and the first wall portion,the first wall portion and the second wall portion are disposed adjoining one another and together define a J-shaped cross-sectional profile perpendicular to the longitudinal axis, andthe first wall portion has a curvature such that an acute advance angle is formed between a first ...