Abstract: Provided is a cutting tool that implements both high positioning accuracy and simple operation when the cutting tool is installed in a tool rest. The cutting has: a tool a main body which includes a fixing seat fixing a cutting insert or a cutting edge; and a position pin, which includes a cylindrical portion that is used for positioning the main body by being abutted to an abutting surface of a tool rest in a case of installing the main body in the tool rest, and which is detachable from the main body. The main body includes a female screw hole that is provided with a female screw portion and a tapered surface that is symmetric with respect to a center axis of the female screw portion and that widens toward an opening thereof. The positioning pin includes a male screw portion that engages with the female screw portion, and a contact portion located at a connecting portion that connects an end of the cylindrical portion and an end of the male screw portion.

Abstract: A peeling plate has upper and lower sides, lateral faces extending between the upper and lower sides, and primary and secondary cutting edges at the transition from the lateral faces to the upper side. The peeling plate in a plan view of the upper side has the shape of a substantially regular n-gon, n being five or six, and n lateral edges lying between the n lateral faces. A primary cutting edge and a secondary cutting edge are formed at the transition from at least one lateral face to the upper surface, wherein active primary cutting edges and active secondary cutting edges are spaced apart from a lateral edge. The lateral edge at the transition to the upper side forming an active cutting corner to the respective active primary cutting edge and active secondary cutting edge.

Abstract: A method for manufacturing a machine component having a rotation symmetry plane includes machining a rotation symmetry plane. The machining a rotation symmetry plane includes determining a track of the cutting. The determining a track determines the track in accordance with a condition that (1) a first end portion of the cutting edge is positioned at a cutting start position of the rotation symmetry plane, (2) N regions defined by division of the cutting edge successively come in contact with the rotation symmetry plane, (3) an inclination of a tangent line at a point of cutting of each of the N regions is equal to a target inclination of a tangent line which passes through the point of cutting and comes in contact with the rotation symmetry plane in a cut plane of the rotation symmetry plane, and (4) a second end of the cutting edge is positioned at a cutting end position of the rotation symmetry plane.

Abstract: A pipe cutting tool having: a plurality of rollers; a clamping member moveable between an open position in which a pipe is insertable between the plurality of rollers and a clamping position in which the pipe is secured between the rollers; a cutting apparatus having first, second, and third cutting members configured to optionally sequentially engage the pipe when positioned between the plurality of rollers; a drive motor drivingly connected to at least one of the rollers; and an actuator operatively connected to the drive motor.

Abstract: A method for designing a cutting edge of a cutting element configured for removing material from a workpiece to leave therein a desired end profile (B22,B24,B26). The method comprises the steps of modeling a desired end profile (B22,B24,B26) of the workpiece, the profile having a longitudinal axis and being defined by a bottom surface (B12), a side surface (B16) and an adjustment surface (B14) extending therebetween; defining a lead profile plane (RP1) and an trail profile plane (RPT) spaced therefrom, each of the planes being oriented perpendicular to the longitudinal axis; determining a profile contour defined by the intersection line between the end profile (B22,B24,B26) and the lead profile plane (RPL).

Abstract: A tool for cyclo-palloid gear hobbing includes a head and a plurality of milling inserts protruding from a front side thereof. The milling inserts are mounted, two by two, in chip removal units that are detachably connected to the head. Each milling insert is clamped by a wedge and a screw that are easy to access. The wedge acts tangentially against the milling insert behind which there is a tangential support in the form of a shoulder. By clamping the milling insert with a respective wedge the milling inserts can be mounted and dismounted in a simple way, and each group of wedge+milling insert+tangential support can be located tangentially and thereby efficiently carry the cutting forces acting on the milling insert. In further aspects, an insert holder intended for the tool, a chip removal unit of an insert holder and an insert kit are disclosed.

Abstract: Rotatable multi-operation tool including replaceable cutting inserts of different types, and a basic body rotatable around a center axis with rear and front ends from which there is extending rearward an envelope surface in which at least one chip space is countersunk, which opens in the envelope surface and in the front end. A first cutting insert type is mounted in a first insert seat formed in one side surface of the chip space in the immediate vicinity of the front end and included in a cavity opening in the front end for the cutting insert to partly protrude axially forward from the front end. A second cutting insert type is mounted in a second insert seat formed in the same side surface as the first insert seat and situated axially behind the first insert seat and included in a cavity opening in a part of the envelope surface.

Abstract: A rotatable multi-operation tool for chip removing machining, including a plurality of replaceable cutting inserts of different types, and a basic body that is rotatable around a center axis and includes a rear end and a front end from which there is extending rearward an envelope surface in which at least one chip space, delimited by two opposite side surfaces, is countersunk, which opens in the envelope surface and in the front end. A first cutting insert is mounted in a first insert seat that is formed in one side surface of the chip space and situated in the immediate vicinity of the front end and included in a cavity that opens in the front end for the cutting insert to partly protrude axially forward from the front end. A second cutting insert, of a type other than the first cutting insert, is mounted in a second insert seat, which is formed in the same side surface as the first insert seat and situated axially behind the first insert seat.

Abstract: A tool includes a parent body (12) and at least two cutting inserts (14) fastened directly or indirectly to the parent body (12). A central clamping device (30) is configured to clamp the cutting inserts (14) in an oriented position relative to the parent body (12). An assembly includes the tool (10) and a jig (32), which can accommodate the tool (10) in such a way that the cutting insert (14) is located in a desired position on the tool (10) and can be clamped in the desired position by actuating the clamping device (30). A method for fastening at least one cutting insert (14) to the parent body (12) includes fitting the parent body (12) with the cutting insert (14); arranging the parent body (12) in a jig (32); bringing the cutting insert (14) into a desired position; and clamping the cutting insert (14) in the desired position.

Abstract: A reversible cutting insert has an upper face, a lower face, a central axial hole and a plurality of side faces connecting the upper face and the lower faces, each of the side faces being convexed in the lateral direction. Round-shaped upper and lower cutting edges are formed at a border portion between the upper face and each of side faces and a border portion between the lower face and each of the side faces, respectively, each of the side faces having an axially dented portion formed between the upper cutting edge and the lower cutting edge, the axially dented portion extending in a widthwise direction and having a flat face perpendicular to the upper and lower faces. A tool assembly according to the present invention includes a tool holder on which a plurality of pockets are formed, and a plurality of cutting inserts, each of which is mounted in one of the pockets.

Abstract: Insert pockets of tool holders configured to accommodate multiple differently-shaped cutting inserts are disclosed. Cutting tool holders and cutting tool systems are also disclosed.

Abstract: A material removal having a plurality of cartridges mounted on an active portion where a plurality of seating members mounted in each of the plurality of cartridges pivots about an axis between a retracted position and an extended position is disclosed. Alternative embodiments have a single pivotable seating member. The pivotable extending seating members operate to extend and retract in a scissors-like motion and enable compact and efficient machining operation, particularly for crank shaft bearing supports.

Abstract: An indexable insert has one or more recesses formed in a frontside or backside surface which receives a surface of the head of a locking screw. When mounted, the insert is forced against respective support surfaces of an insert pocket. The locking screw is threaded into a counterbored tap hole to engage the insert and provide side locating forces and clamping forces to secure the indexable insert in the insert pocket. More particularly, the indexable insert has a shaped surface recess that mates to a complimentarily-shaped surface on the head of a locking screw and secures the indexable insert in multiple dimensions to a seating surface. A material removal tool and a method of mounting the indexable insert are also disclosed.

Abstract: A drill for chip removing machining, including a drill body that rotates around a center axis (C1) and has a rear end, and a front end from which there extends rearward an envelope surface in which two chip flutes each having an insert pocket are countersunk, and two replaceable cutting inserts, including a peripheral cutting insert mounted in a peripheral pocket, and a center insert, which is indexable and mounted in a center pocket that opens in the front end of the drill body and is delimited by a bottom surface, a rear end support surface, a side support surface of a partition wall, and an inside of a border adjacent to the envelope surface. The center insert includes an upperside and an underside between which a through hole for a tightening screw extends, and has an elongate basic shape that is mirror-symmetrical in relation to an imaginary, longitudinal central plane (P) with which a center axis (C3) of the hole coincides.

Abstract: The invention relates to the cutting of rotating surfaces, especially centric symmetric surfaces (1a) of a metal workpiece (1), especially one made of steel or gray cast iron, also when said workpiece is in hardened state, by means of a geometrically determined cutter (2a) or cutters, wherein the axial extension and the material of the surface to be machined are hardly limited or not limited at all and/or the operating time during machining is reduced according to said method and/or the service life of the tool is enhanced and/or the effect of the twist-free condition is achieved, wherein at least one cutter (2a) that is skewed relative to the rotational axis (10) of the workpiece is guided during a feeding motion (3,3?) in a contacting manner on the rotating workpiece and wherein the machining parameters of the rotational axis, especially the forward feed motion in the direction of feeding and the skewed position (x) of the cutter (2a) relative to the longitudinal direction (z), are chosen in such a way that

Abstract: A milling cutter with two faces of cutting end and two mirror symmetrical central bores for the mounting in a shell mill holder on either one of them. The aligned key grooves are formed on the bottom surface of each central bore. The inserts are located on the periphery of each cutting end.

Abstract: Disclosed is a turning tool for cutting circumferential grooves into a surface of a polishing pad formed of a resin material and utilized for polishing semiconductor devices. The turning tool comprising a cutting part arranged to have a tooth width within a range of 0.005–1.0 mm, a wedge angle within a range of 15–35 degrees, and a front clearance angle within a range of 65–45 degrees. A polishing pad effectively formed by using the turning tool, and an apparatus and a method of producing such a polishing pad by utilizing the turning tool are also disclosed.

Abstract: Disclosed is a turning tool for cutting circumferential grooves into a surface of a polishing pad formed of a resin material and utilized for polishing semiconductor devices. The turning tool comprising a cutting part arranged to have a tooth width within a range of 0.005–1.0 mm, a wedge angle within a range of 15–35 degrees, and a front clearance angle within a range of 65–45 degrees. A polishing pad effectively formed by using the turning tool, and an apparatus and a method of producing such a polishing pad by utilizing the turning tool are also disclosed.

Abstract: Cutting tool (1) with a cutting insert (3), on the front edge (14) of which there is a first major cutting edge (15) and an approximately U-shaped indentation (18) that interrupts said first major cutting edge (15), whereby each side leg (19, 20) of the indentation (18) forms a minor cutting edge, and the base (21) of the indentation (18) forms a second major cutting edge (22) which is recessed in the feed direction (V) behind the first major cutting edge (15), and whereby the cutting insert (3) is formed by at least two separate sections (4a, 4b), each of which carries a portion of the indentation (18).

Abstract: A cutting tool for simultaneously forming a plurality of deep, narrow, closely spaced parallel grooves in a hard, brittle substrate material comprises a rigid housing which defines a plurality of closely spaced cutting blade cavities, each of said cavities being constructed to receive and rigidly hold a cutting blade therein, and cutting blades rigidly mounted in each of said cavities.

Abstract: A multi-cornered cutting insert includes a corner cutting edge at each corner, and a chipbreaking recess spaced inwardly of each corner cutting edge. The recess is curved as the insert is viewed in plan. A clearance face for each corner cutting edge has a clearance angle which progressively increases toward the respective corner.

Abstract: A gear cutting tool has a series of separate cutter inserts removeably clamped to the front ledge of a holder block. Each cutter insert has a forward cutting edge that extends beyond the ledge and a rear positioning portion that includes a central projection extending rearwardly from side faces. The central projection mates with a respective one of a series of parallel tracks formed in the holder block and the rear faces mate with upright front walls at the rear of the ledge on either side of the track. The arrangement precisely locates the cutter insert in the holder block. The holder block may be formed of a single piece or may be built up of identical interlocking block elements.

Abstract: A cam shaft tool for a slide type lathe. The invention generally comprises an improved adjustable tool wherein a plurality of holders each carrying a cutting insert is fixed to a main block via an adjustment block. The holder is radially adjustable relative to said adjustment block and axially relative to said main block. The invention also relates to a cutting insert holder for use in a cam shaft tool.

Abstract: A method of manufacturing a master for projection screens, according to which a pattern of parallel rectilinear grooves and ribs is formed on one side of a plate of machinable material by a slotting operation performed by means of a profile chisel. The grooves (33) are formed in several different tooling steps, with several grooves being tooled simultaneously. The profile chisel is of multiple construction and is composed of three subchisels, i.e. a precutting chisel, a cutting chisel (13) and a finishing chisel.

Abstract: A cam shaft tool for a slide type lathe. The invention generally comprises an improved adjustable tool wherein a plurality of holders each carrying a cutting insert is fixed to a main block via an adjustment block. The holder is radially adjustable relative to said adjustment block and axially relative to said main block. The invention also relates to a cutting insert holder for use in a cam shaft tool.

Abstract: A cutting or drawing tool, in which a cutter plate can be precisely located and positioned by means of an adjusting device, in order to produce high-precision profiles. By provision of a second cutter plate, a further face of the workpiece can be machined in a specific relative position to the profile, possibly in a single operation but at least in one setting.

Abstract: A holder for lathe tools having an elongated sleeve for receiving a tool shank and a plurality of shims for fixing the height of the shank in the sleeve. At least a portion of one wall of the sleeve is made of a ferromagnetic material. The holder also includes a clamping head, for clamping the sleeve onto a lathe support, that has a wall that slidably engages the sleeve wall. This clamping head wall has a magnet mounted flush within its surface for engagement with the ferromagnetic portion of the sleeve wall so as to ensure contact between the wall of the sleeve and the clamping head wall. Also disclosed is a holder spreading device for use with the holder.

Abstract: A threading tool is disclosed featuring the combined utilization of a multi-toothed thread chaser insert with a single point indexable thread chaser insert. In generating a desired thread form, successive teeth of the multi-toothed chaser perform the initial cutting passes on a workpiece, while the tooth of the single tooth chaser performs the final finishing cutting operation.

Abstract: A tool holder is provided for the cross slide of a lathe. A cutoff tool extends horizontally from the holder toward the rotational axis of a workpiece in the lathe, and a chamfering tool extends vertically downwardly from the holder in a common cutting plane with the cutoff tool. As the cutoff tool is advanced radially into the workpiece to cut a portion off the end thereof, the chamfering tool is thereby moved chordally with respect to the peripheral edges of the annular groove being formed in the workpiece by the cutoff tool. The cutting edges of the chamfering tool are preferably spaced from the cutoff tool such that they engage the groove edges during the cutting of the groove and complete the chamfering thereof prior to completion of cutoff.