Abstract: For producing a cylindrical surface that has a surface structure of predetermined geometry suitable for application of material by thermal spraying, a geometrically predetermined groove structure of minimal depth and width is introduced into the surface by a tool embodied as a follow-on tool in that a groove cross-section is processed successively to a final size. In order for the surface to be producible in mass production with constant quality, the groove structure is worked in such that first a base groove is introduced with a groove bottom width that is smaller than the groove bottom width of the finished groove. Subsequently, at least one flank of the base groove is processed for producing an undercut groove profile by a non-cutting action or cutting action wherein the introduced groove structure is deformed in such a way that the groove openings are constricted by upsetting deformations of material.

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 drill cutting insert has a cutting edge at a transition between a side surface and a top side which is formed with n identical cutting corners and n identical partial cutting edges—with n ? {3, 4}—extending between the cutting corners. Each of the n partial cutting edges has: adjoining a first cutting corner, a main lip which is straight in plan view of the top side; adjoining the other cutting corner, a secondary lip which is straight in plain view of the top side, and a transition section, via which the main lip and the secondary lip merge into one another and which has a convex section adjoining the main lip and a concave section adjoining the secondary lip. The main and secondary lips enclose on the outside an angle ?<180° in plan view of the top side.

Abstract: A double-sided cutting insert for milling, in particular for face milling, includes first and second cutting edges each having alternately disposed main lips and secondary lips which each extend between active and passive cutting corners. Each main lip, starting from a first distance from a reference plane at an active cutting corner, extends in a manner dropping monotonously to a smaller, second distance from the reference plane at a passive cutting corner. That end of a secondary lip that adjoins the active cutting corner is in each case at a greater distance from the reference plane than the other end of the secondary lip that is remote from the active cutting corner. A circumferential side surface has, immediately adjacent the secondary lips, in each case planar secondary flanks and each secondary lip is formed at least regionally in a convex manner in plan view of the associated secondary flank.

Abstract: An indexable double-negative cutting insert includes an index axis A, two opposing end surfaces, a peripheral side surface which extends therebetween, and opposing side cutting edges formed between the end surfaces and the peripheral side surface. A median plane P is located midway between the end surfaces, passes through the peripheral side surface and is perpendicular to the index axis. The peripheral side surface includes at least one protrusion which extends in an outward direction relative to the index axis, in a plan view of either end surface. The protrusion includes two side abutment surfaces which converge in the outward direction towards the median plane P. In each cross-section perpendicular to the median plane, which cross-section passes through both opposing side cutting edges and also the at least one protrusion, no portion of the peripheral surface is inward of an imaginary line connecting the opposing side cutting edges.

Abstract: A cutting tool has an S-shaped cutting insert retained in a corresponding insert pocket. The insert pocket has a longitudinal main axis extending in a forward to rearward direction. The cutting insert has a longitudinal first axis and a lateral second axis, with two opposite cutting portions and a clamping portion therebetween, arranged along the first axis. The insert pocket includes a forward clamping portion with a forward abutment surface, and a rear clamping portion with first and second rear abutment surfaces. Two side flanks of the cutting insert extend longitudinally oppositely, with first and second clamping surfaces located adjacent each side flank. The first and second clamping surfaces adjacent one side flank abut the first and second rear abutment surfaces, respectively. The first clamping surface adjacent the other side flank abuts the forward abutment surface. Neither of the side flanks abuts the tool holder.

Abstract: A turning insert formed for chip-cutting metal machining of a workpiece that rotates in a direction of rotation at a first speed of rotation around a workpiece axis, the turning insert including a front surface, an envelope surface, and a circular cutting edge located where the front surface meets the envelope surface. The cutting edge extends around the front surface and lays in a plane that forms an angle ? with the envelope surface. A tool axis extends through the turning insert in a normal direction in respect of the plane, and the turning insert, during the chip-cutting metal machining, is formed to rotate around the tool axis at a second speed of rotation. The envelope surface forms a chip surface and is arranged to meet chips formed in the chip-cutting metal machining, and the chip surface includes chip breaking means.

Abstract: Polygonal turning insert has a cutting edge including three part edges, a nose edge and two main edges, and chip-guiding flank surfaces for each part edge, a primary flank surface, and secondary flank surfaces. The primary flank surface is convexly arched and delimited by an arched lower boundary line, which has an apex point facing the nose edge and is situated along a bisector between the main edges, and includes two mirror-symmetrical arc part lines extending from the apex point to a pair of opposite end points situated along a reference line intersecting the bisector at a midpoint between the end points. The distance between the midpoint and the individual end points is greater than that between the midpoint and the apex point. An angle of inclination of the primary flank surface decreases from a greatest value in a bisector section to a smallest value in a reference line section.

Abstract: A cutting insert has a top surface, a bottom surface, a plurality of side surfaces that connect the top and bottom surfaces. The side surfaces form an obtuse angle with the bottom surface as well as an acute angle with the top surface. The side surfaces include a first side surface and a second side surface, which form an obtuse angle with each other when seen from the above. A main cutting edge is formed at an intersection between the first side surface and the top surface. An inclined cutting edge, which is only for ramp milling, and a minor cutting edge are formed at an intersection between the second side surface and the top surface. An obtuse angle, which the second side surface forms with the bottom surface, is greater than that which the first side surface forms with the bottom surface.

Abstract: An object is to provide a cutting insert for milling that has a minor cutting edge for wiping to achieve improved machined surface quality. A minor cutting edge 3 at a corner includes two circular cutting edge portions 3a and 3a joined to major cutting edges 2 on both sides of the corner and a straight cutting edge portion 3b located between the two circular cutting edge portions 3a. The cutting insert satisfies the following conditions: 0.05 TA?L1?0.4 TA, 0.1 L1?L?0.5 L1, and h?15 ?m, where TA is the radius of a circle inscribed inside the major cutting edges 2 as viewed in the thickness direction of the cutting insert, L1 is the length of the minor cutting edge 3 in the longitudinal direction of the straight cutting edge portion 3b, L is the length of the straight cutting edge portion 3b, and h is the height of the minor cutting edge 3.

Abstract: A cutting insert having excellent chip discharge performance is provided. In the cutting insert of the present invention, a bottom surface of a concave groove 21 includes a first bottom surface 211 continuous with a cutting edge part 5, and a second bottom surface 212 which is located on a side further remote from the cutting edge part 5 than the first bottom surface 211, and is located at a lower position than a virtual extension line L1 of an end portion of the first bottom surface 211 on a side remote from the cutting edge part 5. Further, a pair of inclined surfaces 23 are located on a side further remote from the cutting edge part 5 than the end portion of the first bottom surface 211 on the side remote from the cutting edge part 5 in a top view. Therefore, the diameter of generated chips decreases by the fact that the chips are curled while sinking in space formed at a lower position than the virtual extension line L1 of the first bottom surface 211.

Abstract: Cutting insert comprising a cuboid body having a substantially square top face and bottom face, said top face and bottom face connected by four peripheral adjoining side surfaces, wherein at least two cutting edges are formed at the transition of the top face to at least two side surfaces, that cutting edges defining a plane of the top face. To provide a cutting insert and a corresponding tool suited to produce valve seat surfaces with high precision but still having a rather simple construction and being precisely mountable with ease and less efforts of adjustment, the plane defined by the top face cutting edges of the cutting insert has maximum dimensions of 7 mm×7 mm, the bottom face has a supporting surface formed exactly parallel to the plane defined by the top face cutting edges by means of grinding within a tolerance of less than 5 angular minutes.

Abstract: In a cutting tool having an indexable cutting insert with three cutting portions, the cutting insert is removably securable to an insert holder by means of a fastener. The cutting insert has two opposing end surfaces with a peripheral side surface extending therebetween. At least one end surface has a central boss protruding therefrom with a raised support surface, and the peripheral side surface has three abutment recesses. In an end view of the cutting insert, each of the three abutment recesses is visible and located inside a first imaginary circle circumscribing the visible central boss. A holding portion of the insert holder has a seating surface with at least one protuberance protruding therefrom. The support surface is in clamping contact with the seating surface, and exactly two of the three abutment recesses are engaged with the at least one protuberance.

Abstract: A three-way indexable throwaway tip for deep-hole drilling can be used as a center cutting blade body for a drill head in either whole cutting type or uncut core break-off type applications. The throwaway tip for deep-hole drilling is of a thick plate body having a three-fold symmetry with three cutting sections that are rotationally spaced apart at a central angle of 120 degrees. When mounted on a drill head, one cutting section of the throwaway tip faces a drilling direction. The forward facing blade edge of that cutting section includes an inner blade edge shorter in blade length and an outer blade edge longer in blade length forming an apex. The outer blade edge is composed of two consecutive blade edge portions of a peak-side outer blade edge portion having a smaller outer blade edge angle and a corner-side outer blade edge portion having a larger outer blade edge angle.

Abstract: A tool holder includes a tool holder body with an insert-receiving pocket and a clamp for clamping a cutting insert. The clamp includes a pair of downwardly extending nubs that engage a pair of notches in the cutting insert when the clamp is brought into pressing engagement with the insert, thereby securely clamping the cutting insert in the insert-receiving pocket of the tool holder.

Abstract: A cutting insert has a main body which is provided with an upper surface, a side surface, at least one groove which is formed in the side surface and which extends to the upper surface at one end, and a plurality of split cutting blades which are split by the at least one groove. The upper surface is provided with inclined portions corresponding to the split cutting blades. The distance of respective lower ends of the inclined portions from the corresponding split cutting blades increases toward the centers of the corresponding cutting blades in a plan view. A cutting tool having the cutting insert and a method for cutting a workpiece using the cutting tool are also provided.

Abstract: A cutting tool system is designed to have a combined sinusoidal-shaped and helical-shaped cutting edge formed by an assembly of aligned common cutting inserts each having a sinusoidal and helical cutting edge.

Abstract: A cutting insert for use on a tool body includes a first member formed in a predetermined shape and a second member formed separate from the first member in a second predetermined shape and coupled to the first member. At least one of the first member or the second member comprise a number of cutting portions adapted to perform cutting operations on a workpiece.

Abstract: A replaceable cutting head includes a forward cutting portion and a rearward mounting portion. The mounting portion includes a male coupling member that protrudes rearwardly from a base surface. The male coupling member includes three circumferentially spaced apart head fixation members, where each head fixation member has a head peripheral surface that spirals inwardly in a direction against the direction of rotation and diverges. A tool holder includes a female coupling member extends rearwardly from a holder forward surface. The female coupling member includes three circumferentially spaced apart holder fixation members, where each holder fixation member has a holder peripheral surface that diverges rearwardly. When a cutting tool, which includes said cutting head and tool holder, is in a locked position, the male coupling member of the replaceable cutting head is removably retained within the female coupling member of the tool holder by means of a self-lock mechanism.

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 negative cutting insert having a cutting edge comprising four long-side cutting edge portions for rough cutting and four short-side cutting edge portions for finish cutting, which are connected alternately, thereby being able to conduct rough cutting when attached to a rough-cutting tool body, and finish cutting when attached to a finish-cutting tool body. When such cutting inserts are used for rough or finish cutting and then reattached to a finish-cutting tool body or a rough-cutting tool body, finish or rough cutting can be conducted, thereby using all cutting edges thoroughly.

Abstract: A cutting insert includes a first surface, a second surface and a peripheral surface extending therebetween, and an insert hole extending between the first and second surfaces and having a hole axis. A cross section of at least a portion of the insert hole taken perpendicular to the hole axis has an oval shape. The cutting insert also includes a mark provided on at least one of the first and second surfaces, indicating the orientation of the cross sectional oval shape of the at least a portion of the insert hole.

Abstract: A threading cutting insert achieves high shape accuracy of a screw to be processed, and saves on manufacturing cost. Therefore in the threading cutting insert, a plurality of tooth-shaped cutting edges are formed in a cross ridge line portion between a rake face and flanks formed in a cutting side face, wherein the plurality of mountain-shaped cutting edges provides at least one finishing cutting edge for transferring a shape of a screw, and at least one roughing cutting edge formed in a tooth shape smaller than that of the finishing cutting edge. A flank of the finishing cutting edge includes a first flank, and a second flank having a clearance angle larger than that of the first flank, wherein the finishing cutting edge, the first flank, and the second flank are sequentially provided in that order from the rake surface in a direction of a lower surface of the insert.

Abstract: A cutting insert includes an upper surface, a lower surface, a side surface, a cutting edge, and a groove portion. The cutting edge includes a main cutting edge, an auxiliary cutting edge arranged so as to make an obtuse angle to the main cutting edge in the upper surface view, and a corner cutting edge positioned between the main cutting edge and the auxiliary cutting edge and is located in at least a part of an intersection portion between the upper surface and the side surface. The groove portion is located on the side surface so as to reach the upper surface. In this cutting insert, a side wall surface of the groove portion positioned on the side near the corner cutting edge is substantially parallel to the auxiliary cutting edge or comes close to the auxiliary cutting edge toward inside of the groove portion in the upper surface view.

Abstract: The present invention relates to a cutting insert for a cutting tool for the chip-removing high feed milling machining of workpieces, the cutting tool having a holder with a seat for receiving the cutting insert, the cutting insert having at least one cutting edge lying in a covering surface. To achieve a higher feed speed and greater cutting depth, particularly during high feed milling, there is provision, according to the invention, whereby the cutting edge has in portions three different radii of curvature, a first portion having the smallest radius, a middle second portion adjoining it having the largest radius, and a third portion adjoining the latter having a medium radius lying between the smallest and the largest radius, and whereby a peripheral line, running through all the cutting edges, of the covering surface is exclusively convexly curved. The invention relates, furthermore, to a correspondingly configured holder and to a cutting tool.

Abstract: An insert according to an embodiment of the present invention includes an upper surface, a lower surface, a side surface which is connected to the upper surface and the lower surface, and includes a first side surface, and a cutting edge which is located an intersection of the upper surface and the side surface, and comprises a first cutting edge corresponding to the first side surface. The first cutting edge has a projected shape projected toward the upper surface in a side view, and has a recessed shape recessed inward in a top view. A cutting tool according to an embodiment of the present invention includes the insert and a holder configured to attach the insert thereto so that at least a part of the first cutting edge has a negative axial rake angle. A method of manufacturing a machined product according to an embodiment of the present invention is a method of manufacturing the machined product by using the cutting tool.

Abstract: A tooling insert for a screw machine includes a plurality of cutoff blades. The insert is indexable. The cutting side of the blade includes a planar impact surface with a 7° side rake angle. In addition, the blade cutting side has a narrow raised land adjacent the impact surface.

Abstract: A double-sided, indexable turning insert having a polygonal basic shape, including at least three corners, and an upper side and an under side, in which first and second opposite, plane support surfaces are included, The plane support surfaces are delimited inside outer contour lines, and parallel to each other and to a neutral plane (NP) situated halfway between the plane support surfaces. A plurality of cutting edges are along the upper side and the under side, each one of which includes a nose edge and two main edges converging toward the nose edge, all nose edges along the individual upper or under side being situated in a common reference plane (RP) that is depressed in relation to the support surface.

Abstract: A metalcutting insert that is useful in chipforming and material removal from a workpiece. The metalcutting insert includes a metalcutting insert body, which includes a cutting edge having at least one discrete cutting location. The metalcutting insert body further contains a distinct interior coolant passage communicating with the discrete cutting location. The distinct interior coolant passage has a coolant passage inlet defining a coolant passage inlet cross-sectional area, a coolant passage discharge defining a coolant passage discharge cross-sectional area, and an axial coolant passage length. The distinct interior coolant passage defines a coolant flow cross-sectional area along the axial coolant passage length thereof. The metalcutting insert further includes a plurality of surface features for enhancing coolant flow to the cutting edge.

Abstract: A double-sided cutting insert includes: rectangular shaped upper and lower surfaces formed at upper and lower sides of the insert; four side surfaces of each of the upper and lower surfaces; an assembling hole perpendicular to the upper surface; major cutting edges, at corners of one side surface, and rotationally symmetrical with respect to a center of an outer shape of the insert in a plan view where the upper surface is the front and rotationally symmetrical with respect to the center in a front view where the one of the side surfaces is the front; minor cutting edges, formed at one side of each major cutting edge, and rotationally symmetrical with respect to the center in the plan view; and minor side surfaces formed on a surface where the minor cutting edges meet the side surfaces and inclined toward the center with respect to an assembling hole central axis.

Abstract: A double-sided indexable threading cutting insert includes two opposite end surfaces and a common periphery extending therebetween. The periphery includes exactly five identical peripheral sections and exactly five identical peripheral segments. Each peripheral segment extends between two adjacent peripheral sections and each peripheral section includes two adjacent abutment sections located between two rake faces. In a plan view of each end surface, each abutment section lies on a portion of an imaginary five-pointed star which includes five outer vertices alternating with five inner vertices. The cutting insert includes five cutting portions, each cutting portion is associated with a respective outer vertex, each cutting portion extends outwardly, and each cutting portion includes two opposite cutting tips.

Abstract: A cutting knife for difficult-to-manipulate, chip-removing cutting tools, that is replaceably held in a knife window of a rotary-driven tool shaft of a base body, in which at least one knife holder that is connected to the cutting knife over a predetermined breaking point, and that assists with manipulation, is attached to the cutting knife, and is broken away for the tool shaft to be put to use.

Abstract: In a rotary cutting tool used for milling operations, a reversible indexable cutting insert is removably secured in a cutting body. The cutting insert has two opposing end surfaces interconnected by a continuous peripheral surface, including three side surfaces alternating with three corner surfaces. The side and corner surfaces intersect with both end surfaces at side and corner edges, respectively, with each side edge having a major cutting edge, and each corner edge having a corner and minor cutting edge. Each major and minor cutting edge slopes away from first and second end points, respectively, of its mutually associated corner cutting edge, towards a median plane. A first imaginary straight line extending perpendicular to the median plane and intersecting any one of the corner cutting edges at any point along its length except the second end point, passes through the median plane inside an insert boundary line.

Abstract: A cemented carbide insert, including an upper side, an under side, a plurality of side surfaces extending between the upper side and the underside, and an inset including a cutting edge. The cutting edge includes a nose edge and two main edges converging toward the nose edge. The inset is formed of a material that is harder than the cemented carbide, and is countersunk in the surrounding cemented carbide and co-ground with the surrounding cemented carbide. The inset is arranged in a front, wedge-shaped head delimited by one chip surface and two clearance surfaces running along the main edges. The inset transforms into an adjacent body part via limiting surfaces situated inside imaginary planes in the extension of the chip surface and the clearance surfaces.

Abstract: A cutting insert for a machining cutting tool. In a radial direction Q, which extends in a main plane H from the cutting corner to a center Z of the cutting insert, the following are formed in order: a falling cutting surface, a chip guiding stage base adjacent the cutting surface, a first chip guiding stage, which is adjacent to the chip guiding stage base and has a first surface rising from the chip guiding stage base and a first plateau adjacent thereto. A second chip guiding stage has a second surface rising from the first plateau and a second plateau adjacent thereto. A third chip guiding stage has a third surface rising from the second plateau and a third plateau adjacent thereto.

Abstract: A method of grooving a work-piece of superalloy uses a grooving cutting insert at least partially covered with a Cubic Boron Nitride (CBN) layer and having one or more interior ducts formed therein which open out to the insert's rake face at one or more corresponding openings. One or more coolant fluid streams, conveyed via these interior ducts at a pressure of no less than 200 bars, are directed upwardly and outwardly toward an interaction area between a cutting edge of the cutting insert and the work-piece, to thereby limit lengths of work-piece chips created during the grooving operation. The openings of the cutting insert's interior ducts may be located between 0.5-3.0 mm from the insert's cutting edge.

Abstract: A tangential cutting insert has two opposing side surfaces and a peripheral surface extending between the side surfaces. The peripheral surface has four identical end surfaces. The intersections of the end and side surfaces include major cutting edges. The intersection of end surfaces and adjacent end surfaces include minor cutting edges. Each of the major and minor cutting edges has a rake surface extending in an inward direction of the cutting insert. In a side view of the cutting insert the major cutting edges are concave.

Abstract: A cutting insert for use on a tool body includes a first member formed in a predetermined shape and a second member formed separate from the first member in a second predetermined shape and coupled to the first member. At least one of the first member or the second member comprise a number of cutting portions adapted to perform cutting operations on a workpiece.

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 tool has at least one cutting insert seated therein. The cutting insert has a longitudinal axis, an upper surface, a lower surface and a peripheral surface that extends between the upper surface and the lower surface. At least a portion of an intersection between the upper surface and the peripheral surface constitutes a cutting edge. The lower surface has at least one set of base abutment surfaces, each set including at a least one major base abutment surface and at least one minor base abutment surface, the major and minor base abutment surfaces of a given set being spaced apart from one another along the longitudinal axis. When the lower surface has two such sets of base abutment surfaces, the major and minor base abutment surfaces of the first set are longitudinally displaced from the corresponding major and minor base abutment surfaces of the second set.

Abstract: A cutting tool used for grooving and turning operations, where a cutting insert is removably securable in a blade-shaped insert holder. The insert holder includes an insert receiving slot having a longitudinally extending upper receiving slot surface with longitudinally separated single pairs of ridge type V-shaped lateral stopping and upper clamping surfaces, the planar surface components of which form different internal angles. The cutting insert includes an upper surface with a single pair of groove type V-shaped upper abutment surfaces longitudinally separated from two pairs of groove type V-shaped lateral abutment surfaces. Clamping contact occurs between the pairs of upper abutment and upper clamping surfaces, and lateral contact only occurs between one surface component of one of the two pairs of lateral abutment surfaces and one surface component of the pair of lateral stopping surfaces for cases of a sufficiently large side load on the cutting insert.

Abstract: A cutting insert includes two end surfaces each having a main surface usable as an attachment surface to a tool body, a peripheral side surface extending between the two end surfaces and a plurality of cutting edge portions each formed at an intersection between each end surface and the peripheral side surface. Each cutting edge portion includes a corner edge formed at a corner of a related end surface, a major cutting edge extending from one end of the corner edge and extending so as to depart from an intermediate plane defined to be perpendicular to the first axis and to include the second axis, and a minor cutting edge extending from the other end of the corner edge and extending in a direction to approach the intermediate plane.

Abstract: The cutting insert is provided with a polygonal-shaped insert main body (2) having two polygonal surfaces (3, 3) spaced away from each other and a plurality of side surfaces formed between these polygonal surfaces and also provided with cutting edges (8A, 8B, 8C) formed as a rake face on a peripheral edge of a first side surface (4) among the plurality of side surfaces.

Abstract: A cutting insert includes a rake face extending along a cutting edge and a rising wall surface extending so as to form a recess along the cutting edge together with the rake face. The rake face is formed to have a positive rake angle, and includes a first rake face and a second rake face arranged in order in a direction in which a distance from the cutting edge increases. The second rake face is larger than the first rake face in rake angle.

Abstract: A cutting tool system is designed to have a combined sinusoidal-shaped and helical-shaped cutting edge formed by an assembly of aligned common cutting inserts each having a sinusoidal and helical cutting edge.

Abstract: A cutting insert has an upper face, a lower face, a side face, an upper cutting edge, a lower cutting edge and a through hole. The upper face has a substantially polygonal shape. The side face has a first side face and a second side face. The first side face has at least one upper concave part and at least one lower concave part. The at least one upper concave part and the at least one lower concave part are separated from each other through a thick part being continuous along a width direction of the side face. The thick part has a curved region extending in the shape of a wave from one end to the other end in the width direction of the first side face in a side view.

Abstract: A double-sided cutting insert may generally comprise a top surface, a bottom surface, at least one side surface interconnecting the top surface and the bottom surface and forming at least one cutting edge, a through hole extending between the top surface and bottom surface, wherein each of the top surface and bottom surface comprise at least one anti-rotation element. The cutting insert may comprise a single anti-rotation element on the top surface and a single anti-rotation element on the bottom surface. The anti-rotation element may be proximate to the through hole. A cutting tool using the cutting inserts, as well as methods of making and using the same are also described.

Abstract: A double-sided cutting insert may generally comprise: a top surface; a bottom surface; at least one side surface interconnecting the top surface and the bottom surface and forming at least one cutting edge; a through hole extending between the top surface and bottom surface; and wherein each of the top surface and bottom surface comprise an anti-rotation element comprising a single recess comprising a generally cyclic conical periphery. Each of the top surface and bottom surface may comprise at least one cyclic conical face. The recess may comprise a geometry that is complementary to the at least one cyclic conical face of the projection in an insert receiving pocket in a tool holder. A cutting tool incorporating one or more of the cutting inserts, and methods of making and using the cutting inserts are also described.

Abstract: In a cutting tool having an indexable cutting insert with four cutting portions, the cutting insert is securable within a holder portion in four index positions by means of a fastener. The cutting insert has two opposing end surfaces with a peripheral side surface and a central axis extending therebetween, the peripheral side surface having exactly four abutment zones. The insert holder has a holder portion and a body portion, the holder portion having a sidewall surface with a first, second and third reaction zone. The cutting insert is divided into four imaginary quadrants about its central axis and the four abutment zones are located entirely in two of the four imaginary quadrants, and for each index position, three of the four abutment zones are in clamping contact with the three reaction zones.

Abstract: A cutting insert including a substrate having a seat recessed from a top surface at a corner and a superhard sintered body bonded to the seat. The body includes a cutting edge, a rake face with positive rake angle, and chip breaker including, in plan view, a projection projecting from a line that crosses a bisector of the corner toward a tip end of an arc edge of the cutting edge. A first breaker wall is formed between a top edge of the projection and the rake face. A second breaker wall is formed between a ridge line extending from a base end of the projection to a side surface of the body and the rake face. Another ridge line formed between the rake face and the side surface is inclined whereby a distance to a bottom surface of the substrate decreases as a distance from the cutting edge increases.