Abstract: A cutting insert includes a cylindrical body portion, a cutting portion, a first fitting portion, a second fitting portion, and a third fitting portion. The cutting portion includes a rake face and a flank face. A ridgeline between the rake face and the flank face constitutes a cutting edge. When viewed in the axial direction, the cutting portion is provided opposite to the third fitting portion relative to the insertion hole. When viewed in the axial direction, a straight line extending through an outer circumferential end of the cutting edge and a center of the insertion hole overlaps with the third fitting portion and is located between the first fitting portion and the second fitting portion. A third central angle is smaller than a first central angle and is smaller than a second central angle.

Abstract: A cutting insert which is excellent in both cutting edge strength and chip evacuation is provided. A corner edge of the cutting insert is formed in an arc shape. In a direction perpendicular to a rotation axis of a body, a width of the corner edge is 40% or more and 50% or less of a width of the cutting insert. An upper surface has a negative land which is formed along a cutting edge and has a negative angle. The angle of the negative land increases from one end, which is connected to an inner cutting edge, of both ends of the corner edge toward the other end.

Abstract: A cutting insert has an insert major body which includes two hexagonal faces facing each other and six side faces arranged around the two hexagonal faces, and is rotationally symmetrical at 120° intervals about an insert center line passing through centers of the two hexagonal faces and inversely symmetrical in front and back with respect to the two hexagonal faces, wherein a major cutting edge and an minor cutting edge are alternately formed in a circumferential direction in the single hexagonal face at twelve intersecting ridgeline portions at which the hexagonal faces and the side faces intersect, the major cutting edge is formed to be located at an intersecting ridgeline portion with one hexagonal face while the minor cutting edge is formed to be located at an intersecting ridgeline portion with the other hexagonal face at a single side face.

Abstract: The invention relates to a cutting machine with a receiving area for a tube section and with a tool head (1) which can be rotated relative to the receiving area about a longitudinal axis (L), has at least one cutting tool (6) for machining a tube section end (40) of the tube section located in the receiving area, and has a support component (2), wherein the support component faces the receiving area and has an annular component (3) which rotates relative to the support component (2) about the longitudinal axis (L) and is designed to be randomly supported on a tube wall (42, 42) of the tube section end (40). The invention further relates to a corresponding method for reducing vibrations.

Abstract: A self-aligning counter bore cutting tool and method detachably attaches to a drill, and is rotatably driven by the drill, so as to cut a counter bore into a subfloor. The cutting tool includes an annular frame that has unique arm slots for retaining a plurality of cutting blades in a fixed position while rotating and cutting. A plurality of fastening blocks work to securely retain the blades in the arm slots. At least one oversized depth restriction frame extends beyond the blades to restrict the blades from cutting the counter bore beyond a predetermined depth. The frame includes a protruding shaft bushing that securely receives a drill chuck from the drill to create a secure, aligned coupling to the drill. The shaft bushing also aligns the blades with a mudsill fastening plate in the subfloor, so as to create a concentric counter bore at the appropriate depth in subfloor.

Abstract: An indexable rotary cutting tool and insert is capable of performing a high-accuracy cutting process with high efficiency. A twist angle of an outer peripheral cutting edge of the tool has a positive value, an axial rake angle of the cutting edge of a corner R of the tool at a boundary point between the cutting edge of the corner R and the outer peripheral cutting edge has a positive value, the axial rake angle of the cutting edge of the corner R at a reference point has a negative value, and the radial rake angle at least between the boundary point and the reference point in an entire edge length region of the cutting edge of the corner R has a negative value. The radial rake angle at the reference point is smaller than the radial rake angle at the boundary point.

Abstract: A combined structure of an arbor and an arbor seat, including: an arbor, having a first assembling portion which has at least one first hole, each first hole having a first central axis; an arbor seat, having a second assembling portion which is disposed in the axial direction, and the first assembling portion and the second assembling portion being insertably connected with each other, the second assembling portion having at least one second hole which has a second central axis, when the first and second assembling portions are connected with each other in the axial direction, each second central axis is noncoaxial and nonoverlapped with the at least one first central axis; and wherein at least one said fastener is inserted into one said first hole and one said second hole, and urges one said first hole and one said second hole in axially opposite directions.

Abstract: A ball-end mill includes arcuate cutting edges each extending from a tip end to a peripherally outermost point along a S shape curve when viewed from the front side, spirally-shaped, peripheral cutting edges each smoothly connected to each arcuate cutting edge, and a convex rake face of each arcuate cutting edge protruding forward in a rotation direction. Each arcuate cutting edge has a radial rake angle satisfying ?<???, where ? is a radial rake angle at a radial angle of 5°, ? is a radial rake angle at a radial angle of 90°, and ? is a radial rake angle at a rotationally most projecting point of the arcuate cutting edge. The radial rake angle has the maximum value at a radial angle in a range of 12-40° and continuously decreases in a range from the rotationally most projecting point to the peripherally outermost point.

Abstract: A rotary cutting tool includes a cutter body having a plurality of insert-receiving pockets. Each pocket includes a bottom support surface, an axial support surface, a radial support surface, a top clearance surface and an intermediate clearance surface extending between the axial support surface and the top clearance surface. A cutting insert includes a helical top surface, a helical side surface, a side surface opposite the helical side surface, a pair of opposed side walls, a bottom surface, and a cutting edge formed at an intersection between the helical top surface and the helical side surface. The cutting insert further includes an undercut for accommodating the axial support surface, the top clearance surface and the intermediate clearance surface of the pocket when the cutting insert is mounted in the pocket.

Abstract: A single-sided tangential ramping milling insert for high speed milling includes opposite insert seating and top surfaces and a peripheral surface which extends therebetween. The milling insert has a reference plane (P) which passes through the entire peripheral surface, midway between the seating and top surfaces. The peripheral surface includes two opposite side surfaces. Each side surface includes a first cutting edge, a second cutting edge connected to the first cutting edge and extending transversely thereto, a ramping cutting edge connected to the second cutting edge and located opposite the first cutting edge, and a rake surface which extends from at least a portion of the first cutting edge toward the insert seating surface. The milling insert includes two ramping relief surfaces, each of which extends from a ramping cutting edge of one side surface towards the first cutting edge of the opposite side surface.

Abstract: Provided are a drill that enhances work efficiency and process accuracy of a boring process, and a boring device enabling dust collection and recovery by using the drill. In a drill formed with a chip exhaust 102 along a center of an axis in a drill body 101, a large-diameter cylindrical body 101a with an outer diameter increased via a different level part G or G? is provided on a base end side of the drill body 101, first cutting edges 110 are provided on a tip part of the drill body, first scrap lead pockets 112 leading to the chip exhaust are provided in the vicinity of the first cutting edges 110, second cutting edges 120 are provided on the different level part, and second scrap lead pockets 122 leading to the chip exhaust are provided in the vicinity of the second cutting edges 120.

Abstract: A removable tip type rotary tool is provided in which a rotation stop key and a key groove each having a triangular shape are disposed on opposing surfaces of a body and a tip concentrically attached to a leading end portion of the body in a removable manner. A pair of side surfaces of the rotation stop key and a pair of side walls of the key groove are brought into surface contact by mounting screw. An angle for each of the pair of the side surfaces and the pair of side walls is between 60 to 100 degrees, a groove bottom of the key groove is rounded with a radius from 1.5 to 2.8 mm, corners of opening edges on both sides of the key groove and corners of both base-end side portions of the rotation stop key are rounded with radiuses, respectively, from 1.5 to 2.8 mm.

Abstract: A double-sided, nonagon cutting insert includes a top surface, a bottom surface identical to the top surface, nine side surfaces that are identical to each other, a cutting edge formed at an intersection between each of the nine side surfaces and the top and bottom surfaces for a total of eighteen cutting edges, and nine corner radiuses identical to each other, each corner radius extending between the top and bottom surfaces and each of the nine side surfaces. Each cutting edge has a non-symmetric profile with respect to a central, longitudinal axis. The non-symmetrical profile of the cutting edge has the technical advantage of providing a variable cutting force, particularly during fine finishing cutting operations.

Abstract: 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.

Abstract: A tangential indexable cutting insert having eight lips which are distributed in pairs over four side faces of the indexable cutting insert, each lip being formed by a main lip which is formed by the intersection of one of the side faces with a base face, a secondary lip, which is formed by the intersection of the side face with an adjacent side face, and a corner edge (5) adjoining the main lip and the secondary lip, is distinguished by the fact that the main lip has a front portion (4a) which is located at the level of the corner edge, a rear portion which is located at a lower level closer to a center axis of the indexable cutting insert, and a transition portion between the front portion and the rear portion, the three portions being located in one plane.

Abstract: A method of machining a workpiece using a rotary milling cutter is disclosed. The method includes rotating a tool head with a shaft, rough cutting a workpiece with a rough cutting edge of a first partial body to remove a first amount of material from the workpiece, and finish cutting a rough-cut surface of the workpiece with a finishing edge of a second partial body to remove a second amount of material from the workpiece, the second amount of material being smaller than the first amount of material. Both the rough cutting edge of the first partial body and the finishing edge of the second partial body simultaneously engage the workpiece to perform both rough cutting and said finish cutting of the workpiece in a single cutting operation.

Abstract: A cutting insert includes a first surface having a first rake surface, a second surface having a second rake surface, a central axis of the insert extending between the first and second surfaces, four side surfaces extending between the first surface and the second surface, and four cutting edges. Each cutting edge has a first cutting edge component and a second cutting edge component and being associated with a respective one of the first and second surfaces and with two respective ones of the side surfaces. The first rake surface is identical to the second rake surface and the first rake surface and the second rake surface are oriented at a 90° angle to each other about the central axis of the insert.

Abstract: A roughing end mill comprises an end mill body and plural inserts which are placed on an outer circumference of the end mill body with a predetermined distance apart from each other in the axial direction of the end mill body, wherein the plural inserts form plural insert rows which are provided in a circumferential direction of the end mill body, where the inserts are offset in the axial direction from each other between the different insert rows which are adjacent in the circumferential direction. The inserts have waveform cutting edges which face towards an outer circumferential side of the end mill body. One insert of one insert row and an insert of another insert row are positioned such that the waveform cutting edges of each of these inserts make up a waveform cutting edge row whose phase is continuous on a rotation trajectory around the axis.

Abstract: A milling tool for slot milling includes a tool body and a plurality of separated first seats, which form root insert seats for root inserts arranged one after the other along a first line and a plurality of separated flank insert seats that includes a plurality of second seats for flank inserts . The plurality of second seats is arranged one after the other along a second line on a primary side of the root insert seats. A plurality of third seats for flank inserts is arranged one after the other along a third line on a secondary side of the root insert seats. Each flank insert seat includes a bottom surface, an inner side surface, and an outer side surface. Each flank insert includes an under side, an opposite upper side, and a circumferential edge side that forms a rake face connecting the upper side and the underside.

Abstract: The present invention is directed to a cutting tool, comprising: at least one cutting insert; a tool body including a pocket portion to which the cutting insert is mounted; a means for fixing the cutting insert to the pocket portion of the tool body; and a screw for finely adjusting the position of the cutting insert fixed to the pocket portion of the tool body. The screw has a head portion, a threaded portion and a portion for connecting the head portion to the threaded portion. The pocket portion has a bottom surface with a screw hole formed thereon into which the threaded portion is fastened. It also has a side wall comprising a surface for closely contacting the head portion of the screw. The head portion of the screw closely contacts and resiliently pressurizes the close contact surface of the pocket portion when the threaded portion is fastened into the screw hole.

Abstract: This roughing insert is provided with an insert body, and a waveform cutting edge which is formed on an intersecting ridge line portion between a rake face and a flank face of the insert body, and which undulates along this intersecting ridge line portion. The waveform cutting edges are formed on the insert body respectively at positions which are rotationally symmetrical at predetermined angular intervals around a reference line of the insert bodies. These waveform cutting edges which are positioned rotationally symmetrically to each other are formed such that, when the insert bodies are rotated by the predetermined angle around the reference line, one or more portions of the waveform cutting edges do not match each other and are mutually asymmetrical.

Abstract: A cutting insert includes an insert body having a polygonal plate shape. Rake faces are formed on polygonal surfaces of the insert body, and flank faces are formed on lateral faces of the insert body arranged around the polygonal surfaces. Main cutting edges are formed on side ridges of the polygonal surfaces at intersecting ridgelines between the rake faces and the flank faces. Each main cutting edge extends between two corners adjacent to each other in a circumferential direction of the polygonal surface among corners of the polygonal surface. When seen from a direction opposing the rake face, one end portion of the main cutting edge that stretches to one corner of the two corners has a convexly curved shape, and the other end portion of the main cutting edge that stretches to the other corner of the two corners has a concavely curved shape.

Abstract: 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.

Abstract: The cutting insert carrier, in particular for a face milling cutter (2) comprises a tool basic body (4), having a multiplicity of insert seats (5), in which cutting inserts (6) are received. Rotatably fastened to the tool basic body (4) is a setting element, which is realized, in particular, as a curved ring (8) and which has circumferential cams (10), by means of which the clamping levers (12) are actuated for the purpose of fastening the cutting inserts (6) in a locking manner. The setting element (8) enables all clamping levers (12) to be actuated jointly, at the same time, such that all cutting inserts (6) are simultaneously released or locked in their insert seats (5). As a result, the assembly and setup time for insert changing is reduced significantly in comparison with conventional systems.

Abstract: A cutting tool comprising a cutting tool holder and a cutting insert adapted to be mounted thereon. The tool holder comprises an insert seat defined by a base and at least one side wall extending from the base to define an insert seat space adapted to receive therein the insert. The seat comprises a support element extending into the insert seat from the base, and a fastening member engageable with the seat. The fastening member is displaceable with respect thereto between a mounting position adapted to allow the insert to be mounted onto the seat and a securing position adapted for securing the insert within the seat. The insert is formed with a securing cavity and when the insert is mounted onto the tool holder and is in the securing position, a portion of the support element and the fastening member is received within the cavity of the insert.

Abstract: A cutting tool includes a body having a forward end and a rearward end. The forward end includes an insert-receiving pocket with a threaded hole having a center axis. The cutting tool further includes a cutting insert with a countersunk bore with a center axis. The cutting tool includes an error proofing feature for preventing the cutting insert to be properly mounted in an insert-receiving pocket when an offset distance between the center axis of the threaded hole of the insert-receiving pocket and the center axis of the countersunk bore of the cutting insert is greater than a predetermined percentage of the outer diameter of the threaded screw.

Abstract: A milling tool includes a body which is rotatable about a first axis. At least one cutting tooth mounted on the body having a cutting edge for cutting about the first axis. A wiper tooth extends from the mill body. The wiper tooth includes at least at a portion having a peripheral surface about the second axis and the peripheral surface intersects a face surface defining a cutting edge that is round about the second axis for cutting about the first axis. In some embodiments, the peripheral surface, the face surface and the cutting edge are formed on an insert that is mounted the mill body.

Abstract: 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.

Abstract: A single-sided tangential ramping milling insert for high speed milling includes opposite insert seating and top surfaces and a peripheral surface which extends therebetween. The milling insert has a reference plane (P) which passes through the entire peripheral surface, midway between the seating and top surfaces. The peripheral surface includes two opposite side surfaces. Each side surface includes a first cutting edge, a second cutting edge connected to the first cutting edge and extending transversely thereto, a ramping cutting edge connected to the second cutting edge and located opposite the first cutting edge, and a rake surface which extends from at least a portion of the first cutting edge toward the insert seating surface. The milling insert includes two ramping relief surfaces, each of which extends from a ramping cutting edge of one side surface towards the first cutting edge of the opposite side surface.

Abstract: A device for the chip removing machining of a work piece includes a body connectable to a holder or rotatable spindle. The body has at least one first seat to receive a cutting insert having a main cutting edge. The first seat has an active part including at least one first seat surface. The body receives the cutting insert in the first seat, the first seat including at least one location surface. The at least one location surface forms an angle with the first seat surface and positions the cutting insert axially and radially in the active part. The body has a second seat to receive a shim member such that the cutting insert adjoins the at least one first seat surface and the shim member. The cutting insert covers an area defined by the shim member and the at least one first seat surface.

Abstract: A cutting tool comprising a cutting tool holder and a cutting insert adapted to be mounted thereon. The tool holder comprises an insert seat defined by a base and at least one side wall extending from the base to define an insert seat space adapted to receive therein the insert. The seat comprises a support element extending into the insert seat from the base, and a fastening member engageable with the seat. The fastening member is displaceable with respect thereto between a mounting position adapted to allow the insert to be mounted onto the seat and a securing position adapted for securing the insert within the seat. The insert is formed with a securing cavity and when the insert is mounted onto the tool holder and is in the securing position, a portion of the support element and the fastening member is received within the cavity of the insert.

Abstract: A milling tool includes a reversible cutter insert with a central opening having two pairs of cutting surfaces and edges. A pair of planar locating shoulders are disposed on each side of the insert, and each shoulder extends between the insert side face and an adjacent one of the cutting surfaces. The plane of each locating shoulder is at an angle to and intersects the longitudinal axis of the insert central opening. A cutter holder has a slot receiving the cutter insert with a pair of planar locating surfaces oriented at the same angle as the insert locating shoulder plane. The holder locating surfaces are abutted with and contact the insert locating shoulders to support the insert and permit one of the pair of insert cutting surfaces and edges extending out of the slot to cut a workpiece.

Abstract: A cutting tool has a cutting insert secured in an insert pocket. The cutting insert has two abutment bars located on its opposing side surfaces. The abutment bars of a respective side surface have generally coplanar outer surfaces which define an imaginary plane that does not intersect any portion of the respective side surface apart from the outer surfaces. The outer surfaces of one set of abutment bars engage a major wall of the insert pocket.

Abstract: A cutting tool for face milling includes insert pockets for the fixing of cutting insert. The cutting inserts can be fixed in the insert pockets, wherein the cutting inserts and insert pockets are designed such that, when the cutting inserts are fixed within the corresponding insert pocket, each cutting insert presents: a primary and a secondary cutting edge. The intersection between the primary and the secondary cutting edge of one cutting insert being axially inwardly and radially outwardly offset from the intersection between the primary and the secondary cutting edge of another cutting insert. A lead angle defined between the primary and the secondary cutting edges is less than 30°.

Abstract: A milling tool includes a toolholder having an insert-receiving pocket, a cutting insert having a hole provided therein, the cutting insert being disposed in the pocket and a clamping screw having a male key grip at a first end and zero or more key grips at a second end. The clamping screw extends through the hole in the cutting insert into a threaded hole in the toolholder so that threads on the clamping screw mate with threads in the threaded hole. The male key grip is remote from the cutting insert. The second end of the clamping screw includes an enlarged head including a clamping surface that abuts a clamping surface in the hole of the cutting insert. A clamping screw suitable for a milling tool is also provided.

Abstract: A cutting tool assembly includes a cutting head having a coupling face provided with a multilateral recess, a shank having a coupling face provided with a multilateral recess corresponding to that of the cutting head, and a multilateral coupling plate which fits complementarily into the interior space created by the multilateral recesses. The cutting tool assembly provides a more stable coupling structure, since rotational torque is transmitted through the multilateral coupling plate from the shank to the cutting head, whereas in the prior art coupling screws are used to directly bear the torque force.

Abstract: A rotary milling tool body includes a circumferential clamping portion with opposite first and second side surfaces and a plurality of insert pockets and integral clamping jaws arranged therealong. Each clamping jaw includes opposite forward and rearward abutment surfaces which extend between the first and second side surfaces. Each clamping jaw further includes a throughgoing pressure hole which opens out only to the first and second side surfaces. Each clamping jaw further includes a pressure member which is located in the pressure hole and transferable between disengaged and engaged positions.

Abstract: A rotary cutting tool has a disc-shaped tool body and a cutting insert. The cutting insert is resiliently retained by jaws having tangentially-oriented abutment surfaces and defining, together with a holding member, an insert pocket of the tool body. The holding member is configured to bend in a radially-outward direction during rotation of the tool body about the rotation axis, and to engage a stopping recess of the cutting insert to oppose dislodgement of the cutting insert from the tool body.

Abstract: A milling tool for rotary cutting machining, including a tool body having a rotation axis, a plurality of insert seats adapted to receive respective milling inserts arranged in one end of the tool body, and a plurality of damping members arranged inside the tool body which suppress operation-induced vibrations in the tool. The damping members being arranged radially displaced from the rotation axis, displaced from the insert seats, and adjacent to the one end of the tool body.

Abstract: 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.

Abstract: A cutting tool with a cutting insert secured in an insert pocket. The cutting insert has a single outwardly protruding engagement protrusion located on its opposing side surfaces. The engagement protrusion of a respective side surface has an outer surface that defines an imaginary plane that does not intersect any portion of the respective side surface apart from that outer surface. The outer surface of one engagement protrusion engages a major wall of the insert pocket.

Abstract: A cutting head having a tapered shaft portion, a helical flute, and a flat shoulder surface is fastened to a shank having a front end surface, a tapered hole, and a helical flute through a fastening attachment in the form of a helical coil. The fastening attachment has a sectional shape substantially analogous in shape to a space defined between the helical flutes. The fastening attachment is fitted in one of the helical flutes, and is threaded into the other of the helical flutes until the shoulder surface is brought into close contact with the front end surface of the shank, and the outer peripheral surface of the tapered shaft portion is brought into close contact with the inner surface of the tapered hole, thus fastening the cutting head to the shank.

Abstract: A cutting insert and a clamping element for clamping the cutting insert in a pocket of a cutting tool. The cutting insert includes a polygonal body, a top surface, a bottom surface, a plurality of side surfaces, a rake surface extending inwardly from a cutting edge, and a plurality of seating surfaces adjacent the rake surface that are separated by a groove. The clamping element includes a rail member protruding from a bottom surface and extending at least partially from a side surface. The groove of the cutting insert is capable of receiving the rail member of the clamping element for clamping the cutting insert in the pocket of the cutting tool.

Abstract: A double-sided, indexable milling insert has a round basic shape defined by an imaginary cylinder, which is concentric with a center axis and extends between two reference planes that extend perpendicular to the center axis and are equidistantly separated from a neutral plane. The milling insert includes a pair of opposite chip faces located in the reference planes between which an envelope surface concentric with the center axis extends, a plurality of identical and alternately usable cutting edges along the peripheries of the chip faces, and lock means for rotationally securing the milling insert in one of several predetermined index positions. The individual cutting edge has the shape of a wave trough and includes two edge segments that meet at a bottom point.

Abstract: The invention relates to a tool, in particular a revolving tool for machining, in particular metal cutting, workpieces, comprising a carrier body, a cutting body arranged detachably on the carrier body, and a clamping bracket for the positionally accurate fixation of the cutting body relative to the carrier body, wherein the cutting body is pressed against a supporting surface on the carrier body in a planar manner. According to the invention, the clamping bracket is integral with the carrier body and connected to the carrier body by way of a material joint. Furthermore, the cutting body is supported in the direction of the material joint on a face supporting surface of the clamping bracket, wherein the supporting surface is arranged on the carrier body at an acute angle (?) with respect to the face supporting surface of the clamping bracket and oriented in the direction of the material joint.

Abstract: The invention relates to a cutting insert having two working surfaces facing away from each other and having a through hole extending between the working surfaces for receiving a fastening bolt, having a peripheral cutter rim having a cutting edge on each working surface and a central recess surrounded annularly by the cutter rim, having a number of segment-like molded parts corresponding to the number of different cutter positions of a working surface, for positioning the cutting insert in the corresponding cutting position.

Abstract: An indexable ball end mill comprising first to third inserts having arcuate cutting edges detachably attached with first to third screws to first to third seats in a semispherical tip end portion of a tool body; a first threaded hole for the first screw slantingly penetrating a slit-shaped first seat; the first insert having an inclined hole to avoid interference between the first screw and the second and third screws; a hole of the first insert and the first screw having at least partially finished surfaces, so that when the first screw penetrates the first insert attached to the first seat, the first insert is precisely positioned by tight engagement of both finished surfaces.

Abstract: A milling or boring tool has a main tool body rotatable about a tool axis and a cutting element which can be fastened to the main tool body and which has a cutting portion or a cutting insert seat for receiving a cutting insert. To provide a fastening system for fastening the cutting element to the main tool body, which is to be easily implemented at low cost, which allows highly accurate positioning of the cutting element on the main tool body, and which permits very rapid exchange of the cutting element, a centering pin is arranged parallel to the boring axis with an axis that does not coincide with the tool axis and is connected on one part, the main tool body or the cutting element, and a corresponding centering opening is provided on the other part, the cutting element or the main tool body.

Abstract: The invention relates to a tool for machining a workpiece, incorporating a holder having a locating opening arranged at the end face and a cutting head having at least one cutting element arranged on the workpiece-side end. Furthermore, the tool has a sleeve which is made substantially of carbide and which, with a first, holder-side end, is inserted in an accurately fitting manner into the locating opening of the holder, and the cutting head is arranged in or on the second, cutting-head-side end of said sleeve, and coupling means for coupling the holder, cutting head and sleeve.

Abstract: A knife and knife assembly for a planer side head. An L or an LV type side planer head is retro-fitted with knives having substantially less mass than the knives originally provided for these heads.