Abstract: An indexable milling insert has a parallelepipedic shape. The cutting insert includes a mounting hole placed centrally in the cutting insert, a first support side and a second support side, which support sides are parallel with each other and act as alternating support sides. The cutting insert is provided with main cutting edges, which are orientated perpendicularly to the center axis of the mounting hole as well as provided in such a way that a rotation of the cutting insert around the center axis of the mounting hole to an alternative insert seat alternatively a turning of the cutting insert to an alternative insert seat provides an identical location of the main cutting edges in relation to a piece to be machined. A milling tool equipped with such milling inserts is also provided. The cutting insert can include four identical sides for chip removing machining, the sides extending between the parallel support sides, and each side has exactly two cutting edge areas.

Abstract: A milling cutter, such as a surface or face milling cutter, and a cutting insert for a milling cutter. 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.

Abstract: The cutting insert (10) has an upper face (1) having a pair of proud surfaces (13B, 13X), namely an entrainment stop surface (13B), for stopping the entrainment of the insert (10) by a slide (81) of the tool holder (101) into a mounting position, and, further to the front, a deflection surface (13X), for deflecting the path of chips away from a direction (13F) going from a rear edge of a disengagement surface (13D) to the entrainment stop surface (13B).

Abstract: A cutting tool of the invention is equipped with a cutting insert comprising an upper surface, a lower surface, a side surface connected to the upper surface and the lower surface, and an upper surface side cutting edge and a lower surface side cutting edge formed at an intersection portion between the upper surface and the side surface and at an intersection portion between the lower surface and the side surface, respectively; and a holder comprising at a front part thereof an insert pocket to which the cutting insert is attached. The insert pocket comprises a bearing seat surface against which the lower surface of the cutting insert abuts, and is opened into a front surface and a side surface of the holder, respectively.

Abstract: A cutting tool has a cutting insert releasably retained in an insert pocket. The insert pocket includes a supporting portion having support surfaces and a clamping portion including a socket having a socket wall, the socket extending rearwardly from the supporting portion. The cutting insert has a cutting portion with front abutment surfaces and an elongated locating portion extending rearwardly from the cutting portion. The cutting insert is retained in the insert pocket with the front abutment surfaces abutting the support surfaces and with the locating portion located in the socket with abutment surfaces of the locating portion in abutment with the socket wall.

Abstract: A cutting edge is formed at a ridge between an upper surface and a side surface. In the side surface, a plurality of grooves are formed so as to extend from the side surface to the upper surface to divide the cutting edge, and the clearance angles within these grooves are formed so as to increase from one end of the cutting edge toward the other end of the cutting edge. This achieves a cutting insert having small cutting force and excellent cutting performance. Among the plurality of grooves, the groove nearest to the one end of the cutting edge has preferably a width increasing from the upper surface of the cutting insert toward the lower surface.

Abstract: A cutting insert comprising a rake face region located on an upper surface, a flank located on a front surface, and a cutting edge located at an intersection between the rake face region and the flank. At least three types of projections having different distances from the cutting edge are located on the rake face region. When these three types of projections are arranged in the order of their increasing distance from the cutting edge, namely, a first projection, a second projection and a third projection, the top of the second projection is located lower than an imaginary straight line connecting the top of the first projection and the top of the third projection in the side view.

Abstract: A cutting insert comprising a cutting edge; a rake face region formed continuously with the cutting edge; and a clamp face region located more inward and higher than the rake face region. The cutting insert comprising, on the rake face region, a first rake face formed continuously with the cutting edge; a second rake face formed in an inclined surface shape from the first rake face toward the clamp face region; a projection formed so that at least a part of the projection is located on the first rake face, and comprising a top portion disposed at a position corresponding to a middle region of the cutting edge when viewed from above; and a concave part or a convex part formed so that at least a part thereof is located on the second rake face, and located more inward than the projection when viewed from above.

Abstract: A fixture for holding a cutter for a vertical turret lathe may comprise a block with a blind hole. A cutter with an indenter on its distal end may be secured within the hole such that a portion of the indenter comprises a positive rake angle. A method for testing cutters may comprise securing a cutter on a fixture of a vertical turret lathe which has a cutting material positioned adjacent the cutter. The cutting material may be rotated around a rotational axis at a constant rotational velocity. The fixture may be urged laterally such that the cutter progressively moves towards a periphery of the cutting material. The rotational velocity may be decreased as the cutter moves laterally to maintain a relative constant linear velocity between the cutting material and the cutter.

Abstract: The invention relates to an indexable insert having a first and a second insert surfaces (10a, 10b), three side faces (11, 12, 13) and a cutting projection (2), wherein the cutting projection (2) comprises at least one first and one second cutting tooth (21, 22), cutting edges (31, 32) are formed on the cutting teeth (21, 22) at a transition region to the first second insert surface (10a, 10b) respectively, a first chip flow direction (A1) assigned to the first cutting edge (31) forms an angle with a second chip flow direction assigned to the second cutting edge (32), a first and a second chip breaker surface (41, 42) are assigned in the chip flow direction to the first and the second cutting edges (31, 32), respectively, the chip breaker surfaces (41, 42) comprise at least one first and one second groove, respectively, on the first and the second insert surfaces (10a, 10b) which extend essentially perpendicularly to the respective chip flow direction (A1).

Abstract: The invention relates to a reamer which comprises a shaft comprising a traction part and in the axial direction thereof, a working area which is provided with at least one interchangeable tool part and at least one pressure body which is fixed thereto. The tool part is embodied as a hard metal cutting plate, in particular, as an indexable insert. According to the invention, the cutting surface of the cutting plate is arranged at a distance of al least 0.02 mm from the cutting edge on one side in the region of the cut part and at least partially has a peak-to-valley height which increases by at least 0.01 mm in order to assure the production of cut fragments in the main cutting area and to prevent a build up of cuts in the region of auxiliary cutting section and/or to simplify the removal of cuts. Also high targets can be reached by virtue of the fact that the cutting plates comprise at least one cutting cavity in the cutting surface thereof at a distance of at least 0.

Abstract: A tool for chip removing machining, including a long narrow basic body having an envelope surface which is concentric with a center axis, and two opposite ends, and a replaceable loose top which is connected to the basic body via a first coupling that includes a first seating formed in one end of the basic body and a first male element formed in one end of the loose top. The basic body includes a primary part body made of a first material having a first modulus of elasticity, and a secondary part body which includes the first seating and is made of a second material having a second modulus of elasticity which is lower than the first modulus of elasticity.

Abstract: A double-sided wear insert, for a knife assembly that includes a knife, a clamp, and a holder. In one embodiment, the wear insert can be turned end-for-end, and in another embodiment the wear insert can be flipped up-side down, to double the service life of the part.

Abstract: A lathe tool assembly includes a pair of set screws that reduce vibration of a work piece that is being machined. A clamp set screw passes through a clamping assembly to a chip breaker that covers a cutting bit. The end of the clamp set screw bears against the chip breaker. A lateral motion inhibitor screw engages threads within a hole within a cutting bit holder and threads within a hole through the cutting bit.

Abstract: A cutting assembly that includes a tool holder that contains a pocket therein. A shim and/or pocket insert along with a cutting insert are within the pocket of the tool holder. The shim may present an oxidation-resistant surface. Exemplary materials for the shim include ceramics and coated cemented carbides and cermets. The pocket may present an oxidation-resistant surface wherein the pocket may have an oxidation-resistant coating or an oxidation-resistant pocket insert may be positioned within the pocket.

Abstract: The profile turning tool is used for rough-turning and dressing circumferential and flat surfaces, in particular of workpieces made of light metals. It consists of a holder (10) with a receiver (16) for a diamond cutting head (18) as well as a claw (20), which is embodied as a chip breaker, engages a longitudinal groove (26) in the holder (10) and braces the cutting head (18) by means of a tightening screw (22). The groove (26) is located directly behind the cutting head (18). In longitudinal section, its base has an arcuate, concave shape and represents a pivot bearing for the claw (20) that has a correspondingly shaped underside and is guided on the lateral walls of the groove (26). The tightening screw (22) extends in front of the center of the arc with play through a hole in the claw (20).

Abstract: A throwaway insert comprises an insert body formed in a polygonal shape, a cutting face formed by a polygonal face of the insert body, a corner cutting edge which is formed in a curved shape at a corner of the cutting face, a major cutting edge which is formed along a side edge of the cutting face that is connected to a first end of the corner cutting edge, and a concave portion which is formed, in another side edge of the cutting face that is connected to a second end of the corner cutting edge, so as to be adjacent to the second end of the corner cutting edge, and so as to be made concave toward the inside of the cutting face from a tangent of the corner cutting edge drawn at the second end of the corner cutting edge. By using the throwaway insert, cut chips are prevented from being packed in a gap between the throwaway insert and a surface being machined, and the fixing rigidity of the throwaway insert is increased.

Abstract: A cutting tool is provided which comprises an end cutting edge at an end of a rake face, and a depression formed in the rake face so as to provide the end cutting edge with a concave edge portion.

Abstract: A cutting tool (2) includes a front part (5), which has a cutting insert (6), as well as a rear part (7), which is detachably mountable in a holder (3) in an appurtenant machine. The tool (2) comprises a plurality of nozzles (13), which have the purpose of spraying jets (4) of high pressure cooling liquid towards the cutting insert (6). Supply of cooling liquid to these nozzles is guaranteed via a duct system positioned inside the tool, which system includes an equally large number of mutually spaced-apart ducts as the number of nozzles, the nozzles being adjusted in order to direct the jets thereof towards different points of impact on one and the same cutting insert. In this connection, it is possible to close the individual ducts inside the tool individually in order to enable spraying of only one jet at a time towards the appurtenant point of impact on the cutting insert.

Abstract: Fluid passageways are defined by the top plate, tool holder body and the cutting insert to permit the optimum cooling of the interface between the insert and the work piece reducing degradation of the cutting edge of the insert. A number of top plate designs with channel configurations are disclosed to provide the desired coolant flow distribution and accommodate the desired flow rate.

Abstract: A cutting tool (2) includes a front part (5), which has a cutting insert (6), as well as a rear part (7), which is detachably mountable in a holder (3) in an appurtenant machine. The tool (2) comprises a plurality of nozzles (13), which have the purpose of spraying jets (4) of high pressure cooling liquid towards the cutting insert (6). Supply of cooling liquid to these nozzles is guaranteed via a duct system positioned inside the tool, which system includes an equally large number of mutually spaced-apart ducts as the number of nozzles, the nozzles being adjusted in order to direct the jets thereof towards different points of impact on one and the same cutting insert. In this connection, it is possible to close the individual ducts inside the tool individually in order to enable spraying of only one jet at a time towards the appurtenant point of impact on the cutting insert.

Abstract: A cutting assembly that includes a tool holder that contains a pocket therein. A shim and/or pocket insert along with a cutting insert are within the pocket of the tool holder. The shim may present an oxidation-resistant surface. Exemplary materials for the shim include ceramics and coated cemented carbides and cermets. The pocket may present an oxidation-resistant surface wherein the pocket may have an oxidation-resistant coating or an oxidation-resistant pocket insert may be positioned within the pocket.

Abstract: Universal tool holder coolant delivery adapters have adapter bodies which are removably attachable to a tool holder by at least one fastening device, the adapter located between an attachment end of the tool holder and a distal end of the tool holder, the distal end of the tool holder having a cutting tool attached thereto, the adapter bodies having an internal coolant passageway including an intake port and an exit port, the intake port adapted for attachment to a pressurized coolant supply line and the outlet port adapted for attachment to or configured in the form of a coolant spray nozzle, the coolant spray nozzle being closely positioned and substantially aligned with the cutting interface of the cutting tool and a workpiece.

Abstract: A boring tool includes a concave groove formed on the outer peripheral surface of a tool body on the side opposite from a cutting blade with respect to an axis of the tool body. The concave, groove 10 is formed so as to extend from a position x, which is separated rearwardly from a front end face of a head portion, toward the rear side, and to be open downward from above a rake face. Furthermore, a sub-groove is formed between the concave groove and a chip pocket. Accordingly, the natural frequency is increased by reducing the weight of the head portion while limiting rigidity reduction, thereby restricting chattering.

Abstract: An apparatus for cutting chips from a workpiece includes a cutting tool having a rake face and a flank face, the rake face including a cutting edge. A chip breaker is positioned adjacent the rake face for lifting a chip from the rake face after the chip is cut from the workpiece. A supply head is positioned adjacent the chip breaker and a chamber for receiving cryogenic coolant may be formed between the supply head and the chip breaker. A primary nozzle is positioned for directing cryogenic coolant from the chamber onto the rake face and under the chip cut from the workpiece. The primary nozzle may be formed by one or more nozzle channels recessed into the rake face of the cutting tool.

Abstract: A cutting tool includes a shank fixedly mounted to a tool holder of a lathe and orientated generally radially to a workpiece rotated by the lathe, a head at one end of the shank having a recess for receiving the workpiece and orientated generally axially to the workpiece, and a plurality of cutting inserts mounted to the head and disposed about the recess for cutting and removing material from the workpiece as the head moves axially along the workpiece.

Abstract: A metal cutting tool comprising a tool holder and a double sided cutting insert is disclosed. The insert has rake surfaces formed in the corners of upper and lower surfaces of the insert with a recess formed in the corners. The insert is retained by the tool holder via a shim, substantially corresponding in shape and lateral dimensions to the insert. The shim has a projection which mates with the recess. When the insert and shim are clamped in the tool holder, the projection adjacent an operative pair of insert cutting edges bears against the walls of the associated recess, effectively supporting the insert in this region. This results in the inoperative lower cutting edges being spaced from the shim.

Abstract: An indexable threading and turning insert with integral press-in chip breakers, having a threading insert portion and a turning insert portion. Each of the threading insert portion and the turning insert portion has, respectively, an integral pressed-in chip breaker having ideal chip management characteristics. The indexable threading and turning insert has a substantially diamond shape having a first planar face, an opposite second planar face, and four insert faces extending between the first and second planar faces. The threading insert portion is characterized by a first cutting edge formed at the intersection of the first insert face and a first land and a second cutting edge formed at the intersection of the second insert face and a second land. The first and second cutting edges have a plurality of noses separated by gullets.

Abstract: An improved cutting insert with chip control features and a method for manufacturing the same. An insert body having wall regions, sides and top and bottom walls is adapted for mounting in a pocket in a holder. The insert body has cutting edges and a diagonal notch in the top and bottom sides. A land region extends rearwardly from the end wall region toward the respective top or bottom wall and defines a surface region of a predetermined width. A descending wall initiates in a portion of the land and terminates in a planar floor region having a forward, a rearward and opposed side edges. A back ramp extends upwardly from the planar floor rearward edge and terminates at the respective top or bottom wall. The end wall region can include at least one flat land region adjacent the land region. The flat land region defines a selectively removable portion of the end wall region and after any selective removal thereof represents no more than approximately one-third of the total width of the end wall region.

Abstract: A drill bit tip construction wherein the cutting edge at the tip of the drill bit is arranged to cause fragmentation of the chips being removed from the work metal during the drilling operation. The cutting edge of the drill bit at the drilling tip is made to be wavy and, in the illustrated embodiment, is defined by a plurality of segmentally cylindrical grooves extending parallel to the longitudinal extent of the flutes at the tip. In the illustrated embodiment, the grooves have a radius of approximately 0.05" and a length substantially greater than the radius to permit repeated resharpening of the drill bit with resultant reforming of the desired wavy cutting edge in the resharpened tip. In the illustrated embodiment, the cutting edge is formed in an insert secured as by brazing in a diametric slot at the tip. The insert may be formed of a carbide material having optimum cutting characteristics. The grooves are provided in the insert by use of an electric discharge wire cutting machine.

Abstract: A tool holder which is convertible to perform a variety of machining operations such as threading, turning and grooving comprises a support bar formed with a cavity which receives a mounting block having a seat adapted to support an insert so that the top surface of the insert is exposed and its cutting edge extends outwardly from the seat. The insert is clamped within the seat by a clamping block, which is secured atop the insert by a machine screw. The top edge of the clamping block is formed with a beveled bearing surface which engages the head of the machine screw so that forces are applied to the clamping block upon tightening of the screw which urge the insert downwardly, rearwardly and inwardly against the walls of the mounting block seat.

Abstract: A holding device for a rotary cutter has a supporting member extending over a greater part of each cutting element and having a web and holding tongues provided with an openings for receiving tightening screws, an abutment surface for abutting the cutting element and determining a projecting length of the latter, a wearing member fixed in the body part for abutment of the rear surface of the cutting element, a locking member for fixing the wearing member, a centrifuging wedge member with a wedge surface pressing the cutting element against the wearing member, wherein the wearing member has a locking groove which is open toward the cutting element and forms the abutment surface and in which the web of the supporting member is received in a form locking manner, and the centrifuging wedge member lies with its wedge surface directly against the front surface of the cutting element.

Abstract: A circular saw having dual chip cutting action in which all of the saw teeth are of like width and radial height and have similar tooth geometry with the working surface of the leading tooth face disposed at a negative rake angle and having side portions extending outwardly and rearwardly from a central portion at a negative angle to the side faces of the tooth. A single notch is formed in the top face of each tooth and intersects the working surface, and the notch in alternate ones of the saw teeth are disposed at one side of the central plane of the saw body and the notch in the other alternate ones of the saw teeth are disposed at the other side of the central plane of the saw body.

Abstract: The specification discloses a cutting tool (10) having a cutting insert (18) mounted thereon. A clamp (20) is secured to a tool body (12) by a screw (24) and spring (62) interconnection, and a clamp tip (22) extends from the clamp (20) towards the insert (18). Structure, such as a groove (25) or shoulder (82), is formed in or on the upper surface of the cutting insert (18) for interengaging with the clamp tip (22) to secure the cutting insert on the cutting tool (10). Lateral shoulders (30) and (32) and a body surface (52) engage and align the insert (18) thereby, preventing lateral, rearward, and rotational movement of the insert (18).

Abstract: A cutting tool which includes a mounting shaft and a chip breaker positioned on the mounting shaft. A cutting plate is supported between the mounting shaft and the chip breaker, with a clamping jaw being positioned on the chip breaker. A clamping screw is releasably held in the cutting tool mounting shaft for holding the clamping jaw and the chip breaker against the tool mounting shaft. The clamping screw has a longitudinal axis and an outer portion which is situated externally of the clamping jaw. A spring is provided for urging the chip breaker against the clamping jaw. The clamping jaw and the chip breaker have interengaging teeth on their surfaces which are oriented towards one another. The chip breaker further includes a throughgoing aperture through which the clamping screw passes. The throughgoing aperture is enlarged to form an elongated opening for permitting lateral movement of the chip breaker transversely to the longitudinal axis of the clamping screw.

Abstract: A cutting tool holding system is disclosed. The system employs an improved chip breaker element having a lip mechanically gripping a radially extending and exposed edge of the cutting tool insert; the breaker element is held against relative sliding movement by a pin connection to a clamp which laterally urges the element and tool against the shank. Thus, the cutting insert is locked in place within the tool shank pocket avoiding premature failure from undue stress during prolonged tool cutting. The breaker element also has a chip breaker surface comprised of an arcuate segment spaced uniformly from the insert cutting point and a straight segment extending from the arcuate segment along the exposed edge of the insert.

Abstract: This invention relates to an apparatus for guiding a continuous chip formed in lathing. The apparatus can guide the chip smoothly without jamming caused by, for example, curling of the chip so as to prevent the finished surface of a workpiece from damaging and reduce idle time due to dealing with the jammed chip. The apparatus has a guide member mounted on or integral with a cutting tool. The guide path is provided in the guide member for passing the chip, and the guide path has an inlet in the vicinity of the cutting edge of the cutting tool and an outlet remote from the cutting edge. The guide path is inclined, at its inlet portion, with an angle substantially equal to the flowing direction of the chip. The shape and dimension of the guide path may be varied in accordance with the nature of the chip. A detector may be used for detecting the smooth operation of the continuous chip or for detecting the jamming of the chip around the inlet so as to stop the operation.

Abstract: A cutting tool with a holder and a removable insert that has a flat positioning surface and a cutting edge located in the plane of said surface. The insert is carried in a slot of the holder, with the positioning surface of the insert clamped against a locating surface of the holder that in part forms the slot. The locating surface of the holder orients and locates the insert and, hence, the cutting edge in a plane that remains unchanged after the cutting edge is sharpened by grinding and lapping the positioning surface of the insert. Where the cutting edge is formed in a tip or bit of diamond or other cutting material different from the insert, the tip or bit need not be removed from the insert and reset for grinding or lapping. In use, the insert is clamped to the holder intermediate its ends and contact with the locating surface is restricted to spaced areas on opposite sides of a clamping screw.

Abstract: A disc-shaped cutter body (1; 101; 201) is provided with a multiplicity of tooth plates (4; 104; 204, 204a), which engage suitable backing and end-supporting surfaces (5, 6, 7; 105, 106, 107, 205, 205a, 206, 206a, 207, 207a) of tooth holders (3; 103; 203) inserted in recesses formed by radial grooves (2; 102; 202) in the cutter body. Each tooth plate is clamped between a tooth holder and a head portion (9; 109; 209a, 209b) of an elongated holding-back member (8; 108; 208), which has a foot portion (10; 110; 210) that is disposed in the recess of the cutter body and bears on said tooth holder.

Abstract: An improved cutting tool includes a tool holder having a recess in which an insert is held by a retaining screw. The retaining screw has a head end portion which extends into an open recess formed in a side of the insert to press the insert against bottom and side surfaces of the tool holder recess. To maximize the length of a threaded opening engaged by the retaining screw, the screw has a central axis which extends at an acute angle to a central axis of the tool holder. The bottom and side surfaces of the tool holder recess extend at acute angles to the central axis of the tool holder to firmly support the insert during a cutting operation. An outer end portion of a shank of the tool holder has a generally oval cross-sectional configuration which provides clearance for chips cut from a workpiece and also provides a relatively strong support for the insert.

Abstract: A cutting tool which may comprise: an elongated bar member having a body portion and an end portion; and an anvil member removably fastened to the end portion of the bar member for rigidly clamping a cutting insert to the bar member for radial projection therefrom. The end portion of the bar member and anvil member, when fastened together, may form a cylindroid which in at least some embodiments may have a central longitudinal axis which is parallel but offset from the central longitudinal axis of the bar member body portion.

Abstract: A cutting tool for metal cutting with a cutter having parallel base surfaces and grooves machined into the side surfaces, forming cutting edges, which can be inserted into the recesses of a tool holder. The cutting tool has a center bore for accommodating a clamping element and is made from a parallelepiped-shaped base body with rectangular and preferably square sides wherein the base edges of grooves successively run in the direction of a diagonal of the side surfaces of a parallelepiped similar to the parallelepiped-like base body inscribed so that the base surfaces of the cutter are rhombic.