The present disclosure provides a cutting insert mounted to a body when hole machining is performed on a workpiece, the cutting insert comprising: a cutting edge that cuts the workpiece; at least two guide parts that are in sliding contact with an inner surface of a machined hole of the workpiece that has been formed by hole machining; and a through hole for fixing the cutting insert to the body, wherein a front abutment surface and a rear abutment surface, that each face rearward, are provided on the front side and the rear side, respectively, with respect to the through hole.
The present disclosure provides a cutting insert mounted to a body when hole machining is performed on a workpiece, the cutting insert comprising: a cutting edge that cuts the workpiece; at least two guide parts that are in sliding contact with an inner surface of a machined hole of the workpiece that has been formed by hole machining; and a fluid groove provided between the guide parts, the fluid groove being formed so as to be recessed inwardly with respect to a circumcircle that circumscribes the guide parts and an outer peripheral end of the cutting edge in a front view.
The present disclosure provides a body comprising an insert pocket into which a cutting insert is mounted, the insert pocket including: a lower jaw part having a screw hole; an upper jaw part that is arranged apart from the lower jaw part; and a housing groove part into which the cutting insert is inserted, the housing groove part being formed between the lower jaw part and the upper jaw part, wherein the housing groove part is formed such that a groove width on a leading end side is narrower than a groove width on a rear end side
A cutting insert is mounted to a body of a cutting tool, the cutting insert including: a first surface having a substantially parallelogram shape and provided as one of a pair of end surfaces that face each other; second surfaces provided as a pair of side surfaces that face each other, each second surface having a substantially trapezoidal shape and serving as a surface including a first rake surface and a second rake surface; a first cutting edge formed along a side of each of the second surfaces, the side being an adjoining side that adjoins the first surface from among sides that define the second surface; and a second cutting edge formed along a side of each of the second surfaces, other than the adjoining side that adjoins the first surface.
An object of the present invention is to provide a cubic boron nitride sintered body and a coated cubic boron nitride sintered body that can extend the tool life by having excellent wear resistance and fracture resistance. A cubic boron nitride sintered body including cubic boron nitride and a binder phase, wherein in a cross-sectional structure, content ratios of the cubic boron nitride and the binder phase fall within specific ranges, the binder phase includes a Ti compound phase containing a specific compound, an Al compound phase containing a specific compound, and a W compound phase containing WC, an average grain size of the W compound phase is 0.5 μm or more and 3.0 μm or less, content ratios of the Ti compound phase and the Al compound phase based on a whole of the binder phase fall within specific ranges, a content ratio X1 of the W compound phase is 2.0 area % or more and 30.0 area % or less, a content ratio X2 of the W compound phase based on a whole of the binder phase in a range from an interface between the cubic boron nitride and the binder phase to a distance of 300 nm toward the binder phase side is larger than the content ratio X1.
A cutting tool includes an abutment surface and a support portion supporting the abutment surface. The abutment surface includes a first abutment sub-surface and a second abutment sub surface adjacent to the first abutment sub-surface. The support portion including a first support sub portion supporting the first abutment sub-surface, and a second support sub-portion supporting the second abutment sub-surface. The first and second support sub-portions have different constructions resulting in the first and second abutment sub-surfaces having a different stiffness values.
A tool body 10 of a cutting tool 1 for use in hole machining is provided with an insert mounting seat 20 on which a cutting insert 60 is mounted, and such tool body 10 includes: a chip discharge bore 30 formed so as to extend from the insert mounting seat 20 toward a base-end side 10b of the tool body 10; and a coolant flow path 40 for supplying coolant from the base-end side 10b toward a leading-end side 10t of the tool body 10. The coolant flow path 40 includes a through-hole 41 that extends from a peripheral surface 14 of the tool body 10 toward the leading-end side 10t of the tool body 10.
A body of a hole machining tool includes a main body part formed in a cylindrical shape, and a guide part provided on a peripheral part of the main body part, in which the guide part has a holding groove formed in the main body part and a rolling element accommodated so as to be rollable in the holding groove.
The present invention provides a cutting insert that includes a first end surface, a second end surface, and a peripheral side surface that connects the first end surface and the second end surface and includes a cutting edge, in which: a contour shape of each of the first end surface and the second end surface has a longitudinal direction and a shorter direction; and a rake surface is provided in at least a portion of the peripheral side surface, the rake surface facing the longitudinal direction of each of the first end surface and the second end surface.
An additive-manufactured cutting tool including a shank portion having an axis extending through the center thereof, an end cutting portion including at least one cutting pocket, and an intermediary portion connects the shank portion and the end cutting portion. The axis defines an upward direction DU directed from the end cutting portion towards the shank portion. The shank portion, end cutting portion and intermediary portion having a unitary monolithic construction and the intermediary portion has an upwardly-directed build construction.
A cutting insert includes at least two peripheral cutting edges. An insert holder assembly includes an insert holder which include an insert pocket and an ejector chamber connected by a through hole. The insert holder assembly includes an ejector member located at least partially in the ejection chamber, and a compressible biasing member. In an inner position, the biasing member exerts a compressive force on the ejector member. When the cutting insert is releasably attached to the insert holder by a fastening member which is connected to the ejector member, to constitute a fastened position of a cutting tool, the insert holder assembly is in the inner position and the fastening member clamps the cutting insert so that the insert lower surface abuts the pocket base surface.
A rotatable milling cutter body has a plurality of insert seats, each communicating with a respective, rearwardly located fastener receptacle. An insert wedge occupying the insert seat and a fastener occupying the fastener receptacle are arranged along a common central fastener axis (S). The fastener has a threaded bore extending along a fastening axis (F) which is coincident with the central fastener axis (S). The fastening axis (F) defines a radial fastening direction (Rf) perpendicular thereto. Formed in a peripheral surface of the fastener is a key recess. The fastener is configured to rotate and threadingly engage a rearwardly directed threaded pin of the insert wedge, upon insertion of a key into the key recess in a direction parallel to the radial fastening direction (Rf), followed by movement of the key in a predetermined circumferential fastening direction about the corresponding central fastener axis (S).
A cutting tool has an indexable cutting insert (20) removably secured to a holding portion of an insert holder. The cutting insert has opposing first and second end surfaces with a peripheral side surface extending therebetween and a central mounting portion. The cutting insert has a plurality of cutting portions circumferentially spaced apart about a central axis, each cutting portion having a rake and relief surfaces located on the peripheral side surface. The central mounting portion has a plurality of female type or male type mounting elements having opposing first and second mounting flanks. The plurality of rake surfaces and first mounting flanks face in a first direction about the central axis, the plurality of second mounting flanks face in a second direction about the central axis opposite to the first direction, and each second mounting flank extends further from the central axis than its associated opposing first mounting flank.
A cutting tool having an adapter and a cutting head. The adapter has an adapter clamping portion and a clamping mechanism. The clamping mechanism has an actuator, a central wedge and two flanges slidingly engaged to the central wedge. Each of the two flanges has an elongated rear slanted flange portion configured for clamping the cutting head.
A rotatable milling cutter body has a plurality of insert seats, each communicating with a respective, rearwardly located fastener receptacle. An insert wedge occupying the insert seat and a fastener occupying the fastener receptacle are arranged along a common central fastener axis (S). The fastener has a threaded bore extending along a fastening axis (F) which is coincident with the central fastener axis (S). The fastening axis (F) defines a radial fastening direction (Rf) perpendicular thereto. Formed in a peripheral surface of the fastener is a key recess. The fastener is configured to rotate and threadingly engage a rearwardly directed threaded pin of the insert wedge, upon insertion of a key into the key recess in a direction parallel to the radial fastening direction (Rf), followed by movement of the key in a predetermined circumferential fastening direction about the corresponding central fastener axis (S).
A cutting tool having an adapter and a cutting head. The adapter has an adapter clamping portion and a clamping mechanism. The clamping mechanism has an actuator, a central wedge and two flanges slidingly engaged to the central wedge. Each of the two flanges has an elongated rear slanted flange portion configured for clamping the cutting head.
A cutting tool has an indexable cutting insert removably secured to a holding portion of an insert holder. The cutting insert has opposing first and second end surfaces with a peripheral side surface extending therebetween and a central mounting portion. The cutting insert has a plurality of cutting portions circumferentially spaced apart about a central axis, each cutting portion having a rake and relief surfaces located on the peripheral side surface. The central mounting portion has a plurality of female type or male type mounting elements having opposing first and second mounting flanks. The plurality of rake surfaces and first mounting flanks face in a first direction about the central axis, the plurality of second mounting flanks face in a second direction about the central axis opposite to the first direction, and each second mounting flank extends further from the central axis than its associated opposing first mounting flank.
A cutting insert includes at least two peripheral cutting edges. An insert holder assembly includes an insert holder which include an insert pocket and an ejector chamber connected by a through hole. The insert holder assembly includes an ejector member located at least partially in the ejection chamber, and a compressible biasing member. In an inner position, the biasing member exerts a compressive force on the ejector member. When the cutting insert is releasably attached to the insert holder by a fastening member which is connected to the ejector member, to constitute a fastened position of a cutting tool, the insert holder assembly is in the inner position and the fastening member clamps the cutting insert so that the insert lower surface abuts the pocket base surface.
A cutting tool includes an upper surface, a flank, and a cutting edge formed on an edge between the upper surface and the flank, the cutting tool having a shape extending in a longitudinal direction along a longitudinal reference axis from a base end part to a leading end part, the cutting tool having the cutting edge member at the leading end part, in which the cutting tool is provided with a chip discharge groove that is constituted by a wall surface at least part of which is curved and at least part of which is located at a position higher than the cutting edge, in which the chip discharge groove has a shape extending in a direction different from an axial direction of the longitudinal reference axis.
A cutting tool includes a cutting head including a rearward mounting portion and a head through hole. The mounting portion includes a male coupling member having a non-cylindrical, conically shaped head abutment surface, and at least two driven projections. The cutting tool includes a tool holder having a holder pocket which includes a female coupling member having a non-cylindrical, conically shaped forward holder abutment surface, at least two driving recesses and an internal threaded hole. In a locked position, the male coupling member is removably retained in the female coupling member by a fastening screw located in the head through hole and threadingly engaged with the holder internal threaded hole. The head abutment surface abuts the forward holder abutment surface thereby forming a secure coupling between the male and female coupling members. The driven projections are located in the driving recesses for providing torque transfer between the two parts.
A tool body has base and clamping jaws which are spaced apart by a clamping recess. The clamping jaw is resiliently movable with respect to the base jaw. The clamping recess includes an insert receiving pocket and a clamping flexibility recess extending from the insert receiving pocket. The clamping jaw includes a flexible overhanging clamping portion, and a fixed clamping portion connected by a hinge clamping portion, the flexible overhanging clamping portion being delimited by the insert receiving pocket and a clamping flexibility recess. The clamping recess comprises an innermost clamping recess point which is located at the clamping flexibility recess.
A tool body has base and clamping jaws which are spaced apart by a clamping recess. The clamping jaw is resiliently movable with respect to the base jaw. The clamping recess includes an insert receiving pocket and a clamping flexibility recess extending from the insert receiving pocket. The clamping jaw includes a flexible overhanging clamping portion, and a fixed clamping portion connected by a hinge clamping portion, the flexible overhanging clamping portion being delimited by the insert receiving pocket and a clamping flexibility recess. The clamping recess comprises an innermost clamping recess point which is located at the clamping flexibility recess.
A four-way indexable plate-shaped cutting insert () that is indexable about a central insert axis and a cutting tool. The cutting includes a base body, a first insert side surface, a second insert side surface opposite the first insert side surface, a peripheral insert surface that connects the first insert side surface and the second insert side surface, and four cutting arms. The peripheral insert surface of each cutting arm includes a rake surface, a relief surface facing in the opposite direction, and a cutting edge formed at an intersection of the rake surface and the relief surface. The first insert side surface includes a first portion that is farther away from an insert median plane than the another portion thereof. The first insert abutment portion defines a coolant groove that is recessed in the first insert abutment portion. The coolant groove opening out to the first arm side portion.
A four-way indexable plate-shaped cutting insert that is indexable about a central insert axis and a cutting tool. The cutting includes a base body, a first insert side surface, a second insert side surface opposite the first insert side surface, a peripheral insert surface that connects the first insert side surface and the second insert side surface, and four cutting arms. The peripheral insert surface of each cutting arm includes a rake surface, a relief surface facing in the opposite direction, and a cutting edge formed at an intersection of the rake surface and the relief surface. The first insert side surface includes a first portion that is farther away from an insert median plane than the another portion thereof. The first insert abutment portion defines a coolant groove that is recessed in the first insert abutment portion. The coolant groove opening out to the first arm side portion.
A cutting insert has two end surfaces and a side surface joined to the two end surfaces, and the cutting insert is formed in a substantially polygonal shape. The cutting insert comprises a cutting edge and a flank connected to the cutting edge on the side surface and having a negative clearance angle. The cutting edge has a major cutting edge, an inner cutting edge, and a corner cutting edge that is formed in a curved shape between the major cutting edge and the inner cutting edge. The flank has a first to third side surface parts that are connected to the major cutting edge, the inner cutting edge and the corner cutting edge, respectively. The length in the width direction of the third side surface part is largest at a first boundary between the third side surface part and the first side surface part and gradually decreases from the first boundary to at least an intermediate position toward a second boundary between the third side surface part and the second side surface part.
A body of a cutting tool has: an insert pocket in which a cutting insert is mounted; a screw hole into which an insert mounting screw for fastening the cutting insert to the insert pocket is screw-inserted; and a chip removal coolant flow path for allowing coolant C to be discharged through a discharge port that is open at a leading end of the body, wherein at least a part of the chip removal coolant flow path is at respective distances Da, Db and Dc from the insert pocket, from the screw hole, and from the periphery of the body, in a cross-section perpendicular to the axial direction of the body, wherein each of the distances Da, Db and Dc is equal to or greater than a predetermined size.
The present invention provides a joint component capable of smoothly supplying a fluid to a cutting position without limiting a cutting width. A joint component 100 has a body part 30 in which a first fastening part 31 that can be fastened to a shank 10 that is a first fastened member is provided on one end side, and a second fastening part 32 that can be fastened to a head 20 that is a second fastened member is provided on the other end side. The joint component 100 has: a plurality of discharge flow paths 51 that open at a plurality of positions in a circumferential direction on the outer peripheral surface of the body part 30 on the other end side; and a supply flow path 52 that passes through the center axis Ax from the one end side of the body part 30 and is connected to the plurality of discharge flow paths 51.
Provided is a joint component capable of easily fastening to and unfastening from a fastened member while maintaining high rigidity. A joint component 100 includes a first fastening part 31 and a second fastening part 32 that can be screwed into a shank 10 and a head 20, the joint component 100 being capable of fastening and unfastening the first fastening part 31 and the second fastening part 32 with respect to the shank 10 and the head 20 by rotating around a central axis Ax due to a hexagonal wrench 60, wherein an engagement hole 40A having a non-circular shape in front view, with which the hexagonal wrench 60 can be engaged around the central axis Ax, is formed in parallel with the central axis Ax on a distal-end side, which is at least one end in the center-axis Ax direction.
A cutting tool having a cutting insert releasably retained in insert pocket by a fastening member. The insert pocket has first and second side surfaces. The insert pocket has a base surface which includes at least one male or female type pocket engagement member which includes at least one sloping pocket wedge abutment surface. The insert has first and second side abutment surfaces. The cutting insert has an insert lower surface which includes at least one male or female type insert engagement member which includes at least one sloping insert wedge abutment surface. By virtue of the sloping orientation of the at least one pocket wedge abutment surface and the at least one insert wedge abutment surface, a clamping force applied by the fastening member urges said surfaces to slide over each other so that the cutting insert sits firmly in the insert pocket.
A cutting tool 10 includes: a shank part 14 that is substantially cylindrical in shape and provided at a base end portion 10b of the cutting tool 10; a cutting edge 18 located at a leading end portion 10t of the cutting tool 10; a chip discharge groove 30 formed from the cutting edge 18 toward the base end portion 10b of the cutting tool 10, for guiding and discharging chips generated during cutting; and a plurality of groove-like coolant flow paths 40 provided on a periphery of the cutting tool 10, for supplying coolant toward the leading end portion 10t. In a leading end view where the cutting tool 10 is viewed from the leading end portion 10t along the central axis 10A extending in a longitudinal direction of the cutting tool 10, a first coolant flow path 41 of the plurality of coolant flow paths 40 is located at an upper side relative to the cutting edge 18.
A cutting tool having a cutting insert releasably retained in insert pocket by a fastening member. The insert pocket has first and second side surfaces. The insert pocket has a base surface which includes at least one male or female type pocket engagement member which includes at least one sloping pocket wedge abutment surface. The insert has first and second side abutment surfaces. The cutting insert has an insert lower surface which includes at least one male or female type insert engagement member which includes at least one sloping insert wedge abutment surface. By virtue of the sloping orientation of the at least one pocket wedge abutment surface and the at least one insert wedge abutment surface, a clamping force applied by the fastening member urges said surfaces to slide over each other so that the cutting insert sits firmly in the insert pocket.
The present invention provides a tool body that is rotated around a central axis, with a central part thereof being assembled onto an arbor, in which the tool body includes a plurality of recessed parts provided circumferentially between the central part and an outer peripheral part, as viewed from the front side opposite to an assembly side with respect to the arbor, and the recessed parts are each formed so as to have a cross-sectional shape that is gradually narrowed in a depth direction.
A cutting tool (66) has an insert holder and a cutting insert (20) releasably attached thereto. The cutting insert (20) has an insert edge (30) which includes two nose cutting edges (38) and a convex corner cutting edge (33) which extends therebetween. The two nose cutting edges (38) form a nose angle. The insert edge (20) also includes two mid-side edges (36) which are located further from the corner cutting edge (33) than the nose cutting edges (38). The two mid-side edges (36) form a mid-side angle. The nose angle is less than the mid-side angle.
A cutting tool has an insert holder and a cutting insert releasably attached thereto. The cutting insert has an insert edge which includes two nose cutting edges and a convex corner cutting edge which extends therebetween. The two nose cutting edges form a nose angle. The insert edge also includes two mid-side edges which are located further from the corner cutting edge than the nose cutting edges. The two mid-side edges form a mid-side angle. The nose angle is less than the mid-side angle.
A cutting insert comprises a first end surface and a second end surface that are each formed in a substantially polygonal plate shape and each include a first long side and a second long side, and a first short side and a second short side that are located between the first long side and the second long side, the first end surface and the second end surface facing each other. The first end surface and the second end surface each have: a first cutting edge extending from the first long side to a first corner part that is located between the first long side and the first short side; and a second cutting edge extending from the second long side to a second corner part located between the second long side and the first short side. A radius of curvature R3 of a third corner part located on an opposite side of the first corner part with the first long side interposed therebetween is larger than a radius of curvature R1 of the first corner part.
A slitter having a slitter body and a plurality of disc segments mounted to pockets formed in the slitter body. The disc segments each have a plurality of integrally formed teeth. The slitter has a smoothly curved peripheral surface against which the disc segments abut when mounted thereto.
A slitter having a slitter body and a plurality of disc segments mounted to pockets formed in the slitter body. The disc segments each have a plurality of integrally formed teeth. The slitter has a smoothly curved peripheral surface against which the disc segments abut when mounted thereto.
A compact mechanical-type holder with clamping forces, precision and small runout comparative to a heat-shrink holder, and a collet designed for such holder. The collet (16) including an externally tapering collet tapered portion, and flexibility slits opening out to the collet tapered portion. The collet inner peripheral surface includes a recess (88) located between a first cylindrical clamping surface (76) and a second cylindrical clamping surface (82).
A fastening component that is fastened to an arbor so as to fix a cutter, being a rotary cutting tool, to the arbor, the fastening component including: a shaft part screwed into an internal thread of the arbor; an engagement hole formed in a shaft center of an end surface that is opposite to an end surface that is fastened to the arbor; a first flow path formed in a shaft center of the shaft part and opened in an end surface of the shaft part which is fastened to the arbor; a third flow path opened, in a position that is away from the shaft center, in an end that is opposite to an end that is fastened to the arbor; and a second flow path connecting the first flow path and the third flow path.
Provided is a cutting insert or the like that is capable of copy machining in a narrow space and is also highly economical. A cutting insert (3) has a first end portion (4) and a second end portion (5) formed in substantially the same shape. A cutting edge (10) of the first end portion (4) includes a curved corner cutting edge (13) and a pair of lateral cutting edges (11 and 12) disposed such that both ends (13L and 13R) of the corner cutting edge (13) are sandwiched therebetween. The pair of lateral cutting edges (11 and 12) are formed linearly and form an acute angle (Y). A side surface (9) has a corner flank (94) continuous with the corner cutting edge (13) and a flat surface (95) disposed further toward a bottom surface (8) than the corner flank (94) at a portion (93) abutting on the corner cutting edge (13).
A pressing member is configured to be inserted into a pocket of a tool body for pressing and fixing a cutting insert placed in a mounting part of the pocket onto a mounting surface of the mounting part. The pressing member includes a wedge part having a contacting surface that comes into contact with an inner surface of the pocket, and a pressing surface that is in contact with the cutting insert. The pressing surface is formed so as to gradually come close to the contacting surface in an insertion direction into the pocket. The pressing member also includes a pressure-receiving part that is pushed into the pocket in the insertion direction by a fastening component that is screwed into the pocket.
A cutting tool has a cutting insert removably secured to a holding portion of an insert holder. The cutting insert has opposing first and second end surfaces with an insert peripheral surface and a central axis extending therebetween, at least one cutting portion, and at least one mounting cut-out. Each cutting portion has a cutting edge and an adjacent relief surface facing in a first rotary direction about the central axis. Each mounting cut-out extends between the first and second end surfaces and has a first flank surface and an adjacent first upper slope surface. The first flank surface faces in a second rotary direction about the central axis and the first upper slope surface faces away from a median plane located midway between the first and second end surfaces. The first upper slope surface extends away from the median plane with increasing distance from the first flank surface.
A cutting tool has an indexable cutting insert removably secured to a holding portion of an insert holder. The cutting insert has opposing first and second end surfaces with an insert peripheral surface and a central axis extending therebetween, at least two cutting portions, and at least one mounting cut-out. Each cutting portion has a cutting edge formed by the intersection of rake and relief surfaces formed on the insert peripheral surface, one rake surface facing in a first rotary direction about the central axis and one rake surface facing in an opposite second rotary direction. Each mounting cut-out extends between the first and second end surfaces and has spaced apart first and second flank surfaces disposed on a cut-out peripheral surface which is separate and spaced apart from the insert peripheral surface. The first and second flank surfaces face in the first and second rotary directions, respectively.
A cutting tool has an indexable cutting insert removably secured to a holding portion of an insert holder. The cutting insert has opposing first and second end surfaces with an insert peripheral surface and a central axis extending therebetween, at least two cutting portions, and at least one mounting cut-out. Each cutting portion has a cutting edge formed by the intersection of rake and relief surfaces formed on the insert peripheral surface, one rake surface facing in a first rotary direction about the central axis and one rake surface facing in an opposite second rotary direction. Each mounting cut-out extends between the first and second end surfaces and has spaced apart first and second flank surfaces disposed on a cut-out peripheral surface which is separate and spaced apart from the insert peripheral surface. The first and second flank surfaces face in the first and second rotary directions, respectively.
A fixing member that presses and fixes a cutting insert disposed on an insert mounting part of a tool body, the fixing member including: a fixing member body that has a pressing part for pressing the cutting insert; a fitting protrusion that is provided so as to protrude from a bottom part of the fixing member body, the fitting protrusion being fitted in a fitting hole formed in the tool body; and a coolant introduction flow path, a coolant discharge flow path and a coolant reservoir that guide a coolant delivered from a coolant branch flow path of the tool body to a discharge port formed in a leading end of the fixing member body so as to be discharged therefrom, wherein an inlet port of the coolant introduction flow path which communicates with an outlet port of the coolant branch flow path of the tool body is formed in an outer peripheral surface of the fitting protrusion.
The present invention provides a fixing member that presses and fixes a cutting insert disposed on an insert mounting part of a tool body, the fixing member including: a fixing member body that has a pressing part for pressing the cutting insert; a fitting protrusion that is provided so as to protrude from a bottom part of the fixing member body, the fitting protrusion being fitted in a fitting hole formed in the tool body; and an engagement recess formed in a peripheral surface of the fitting protrusion, the engagement recess being engaged with a leading end of a fastening screw which is screwed into an internal thread that communicates with the fitting hole of the tool body, wherein the fitting protrusion is drawn into the fitting hole by the fastening screw that engages with the engagement recess, whereby the pressing part presses and fixes the cutting insert.
Provided are a fixing member and a cutting tool capable of pressing and fixing a cutting insert to a tool body in a stable state without defects such as wear and deformation.
Provided are a fixing member and a cutting tool capable of pressing and fixing a cutting insert to a tool body in a stable state without defects such as wear and deformation.
A fixing member pressing and fixing a cutting insert disposed on an insert mounting part of a tool body includes a fixing member body configured to be fastened to a fixing member mounting part of the tool body and a pressing portion that is provided to the fixing member body and configured to press the cutting insert when the fixing member body is fastened to the tool body, wherein in the pressing portion, a bulging portion having an outer shape, in which a cross-sectional view in a direction orthogonal to a width direction of the fixing member body is curved in an arc shape, is formed along the width direction of the fixing member body.
A coated cutting tool including a substrate and a coating layer formed on the substrate, wherein the coating layer has a first alternately laminated structure in which two or more A layers and two or more B layers are alternately formed, the A layer contains (AlaCrbTi1-a-b)N, the B layer contains (AlcTi1-c-dBd)N, the average thickness of the first alternately laminated structure is 0.50 μm or more and 10.00 μm or less, and the average thickness per layer of each of the A layer and the B layer in the first alternately laminated structure is 2 nm or more and 300 nm or less.
A thread milling cutter (1) includes an integrally formed thread milling tool (10) having a rotational axis (S), a shank portion (24) and a forward cutting portion (34). The cutting portion (34) has at least five insert pockets (42) recessed therein with at least one insert pocket (42) being devoid of an associated support protrusion (46), allowing different insert placements for different thread pitches.
A thread milling cutter (1) includes an integrally formed thread milling tool (10) having a rotational axis (S), a shank portion (24) and a forward cutting portion (34). The cutting portion (34) has at least five insert pockets (42) recessed therein with at least one insert pocket (42) being devoid of an associated support protrusion (46), allowing different insert placements for different thread pitches.
A two-way indexable V-shaped cutting insert having first and second rake surfaces located in a front insert surface thereof. First and second relief surfaces respectively connect the first and second rake surfaces to first and second converging insert abutment surfaces, respectively. A first cutting edge is located at an intersection of the first rake surface and the first relief surface. A second cutting edge is located at an intersection of the second rake surface and the second relief surface. A first relief angle is formed between the first relief surface and the first converging insert abutment surface. A second relief angle is formed between the second relief surface and the second converging insert abutment surface. The first and second relief angles are obtuse. In a cutting tool, the two-way indexable V -shaped cutting insert is releasably secured in a tool holder by means of a fastening member.
A miniature internal boring tool including two to four shank flat surfaces and two to four integrally formed teeth. The outermost points of cutting edges of the teeth define an outer cutting diameter (OD) fulfilling the condition: 2 mm
A two-way indexable V-shaped cutting insert having first and second rake surfaces located in a front insert surface thereof. First and second relief surfaces respectively connect the first and second rake surfaces to first and second converging insert abutment surfaces, respectively. A first cutting edge is located at an intersection of the first rake surface and the first relief surface. A second cutting edge is located at an intersection of the second rake surface and the second relief surface. A first relief angle is formed between the first relief surface and the first converging insert abutment surface. A second relief angle is formed between the second relief surface and the second converging insert abutment surface. The first and second relief angles are obtuse. In a cutting tool, the two-way indexable V-shaped cutting insert is releasably secured in a tool holder by means of a fastening member.
A miniature internal boring tool including two to four shank flat surfaces and two to four integrally formed teeth. The outermost points of cutting edges of the teeth define an outer cutting diameter (OD) fulfilling the condition: 2mm < OD < 9mm.
A tool holder includes a tool shank and a tool head connected to the tool shank. The tool head has a rear surface. An insert seat or a blade pocket is partially formed on both the tool head and the tool shank, and extends rearwardly of the tool head's rear surface. Adjacent to at least a portion of a shank side surface there is a reinforcement portion connecting the shank side surface and the tool head.
A cubic boron nitride sintered body including cubic boron nitride and a binder phase, wherein content ratios of the cubic boron nitride and the binder phase are each in a specific range, the binder phase contains a Ti compound phase, an Al compound phase, and a W element-containing phase, content ratios of the Ti compound phase, the Al compound phase, and the W element-containing phase are each in a specific range, the W element-containing phase contains at least one selected from the group consisting of W2B and WB, and I2/I1, which is a ratio between an X-ray diffraction peak intensity of a (111) plane of the cubic boron nitride, I1, and a sum of X-ray diffraction peak intensities of a (211) plane of W2B and a (110) plane of WB in the binder phase, I2, is in a specific range.
C04B 35/5831 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on borides, nitrides or silicides based on boron nitride based on cubic boron nitride
C04B 35/58 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on borides, nitrides or silicides
A rotary milling tool has a tool holder and a milling head releasably attached thereto. The milling head has a head through recess opening out to the head forward and rearward surfaces. The recess includes a plurality of radially extending tooth-receiving lobes. The tool holder has a projection which includes a plurality of radially extending teeth. When assembled the teeth are located in the tooth-receiving lobes and provide centering and torque transfer capabilities.
A rotary milling tool has a tool holder and a milling head releasably attached thereto. The milling head has a head through recess opening out to the head forward and rearward surfaces. The recess includes a plurality of radially extending tooth-receiving lobes. The tool holder has a projection which includes a plurality of radially extending teeth. When assembled the teeth are located in the tooth-receiving lobes and provide centering and torque transfer capabilities.
A cutting head (22) has two radially extending cutting arms and at least one fastening recess having an opening located at least partially on one of cutting arms. Each cutting arm has a dovetail arm rear abutment surface. A tool holder (24) has two circumferentially spaced apart driving members. The tool holder has a pocket with two radially extending arm receiving receptacle. Each receptacle has a dovetail receptacle rear abutment surface. The tool holder has at least one through hole located in one of the driving members. When assembled, a fastening member (26) is disposed in the through bore and engages with the fastening recess to urge each cutting arms towards a respective driving member.
A cBN sintered body including cBN and a binder phase, wherein a content ratio of the cBN is 80 to 94 volume %, a content ratio of the binder phase is 6 to 20 volume %, the binder phase contains a metal phase, a V compound, and an Al compound, the metal phase contains one or more selected from the group consisting of Ni, and a Ni-containing alloy and solid solution, the Ni-containing alloy and solid solution each contain Ni and one or more elements selected from the group consisting of Al, Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, W, and Co, the V compound contains one or more selected from the group consisting of VN, VCN, and VC, the Al compound contains one or more selected from the group consisting of Al2O3, AlN, and AlB2, a maximum peak position 2θ of a 200 plane of the metal phase is less than 51.60°, and I1/(I1+I2) is 0.40 to 0.80, where I1 denotes an X-ray diffraction peak intensity of a 220 plane of the V compound, and I2 denotes an X-ray diffraction peak intensity of a 200 plane of the metal phase.
B22F 1/142 - Thermal or thermo-mechanical treatment
B22F 3/14 - Both compacting and sintering simultaneously
B22F 9/04 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from solid material, e.g. by crushing, grinding or milling
C22C 1/051 - Making hard metals based on borides, carbides, nitrides, oxides or silicidesPreparation of the powder mixture used as the starting material therefor
65.
CUTTING HEAD WITH FASTENING RECESS AND CUTTING ARMS HAVING DOVETAIL REAR ABUTMENT SURFACE, TOOL HOLDER AND ROTARY CUTTING TOOL
A cutting head has two radially extending cutting arms and at least one fastening recess having an opening located at least partially on one of cutting arms. Each cutting arm has a dovetail arm rear abutment surface. A tool holder has a two circumferentially spaced apart driving members. The tool holder has a pocket with two radially extending arm receiving receptacle. Each receptacle has a dovetail receptacle rear abutment surface. The tool holder has at least one through hole located in one of the driving members. When assembled, a fastening member is disposed in the through bore and engages with the fastening recess to urge each cutting arms towards a respective driving member.
A cutting tool used for turning operations is releasably secured to a tool holder. The cutting insert includes top and bottom insert surfaces, each surface including two pairs of insert wedge surfaces. The tool holder includes an insert pocket having a pocket top surface and a pocket bottom surface. When the cutting tool is assembled, only one of the two pairs of insert wedge surfaces of the insert top surface engages the pocket top surface, and only one of the two pairs of insert wedge surfaces of the insert bottom surface engage the pocket bottom surface.
A cutting head has driven surfaces and includes a head coupling pin that protrudes rearwardly from a head rear surface. The head coupling pin includes a pin recess recessed in the pin peripheral surface. A tool holder, elongated along a holder longitudinal axis, has driving members and a holder coupling hole recessed in a holder base surface. A fastening member is disposed in a holder through bore that extends from the holder base surface to a holder peripheral surface. The holder through bore is located entirely on one side of a longitudinal plane containing the holder longitudinal axis. When a cutting tool which includes the cutting head and tool holder is in a fastened position, the head coupling pin is removably retained within the holder coupling hole upon engagement with the fastening member.
A cutting head (22) has driven surfaces and includes a head coupling pin that protrudes rearwardly from a head rear surface. The head coupling pin includes a pin recess recessed in the pin peripheral surface. A tool holder (24), elongated along a holder longitudinal axis (D), has driving members and a holder coupling hole (96) recessed in a holder base surface. A fastening member (26) is disposed in a holder through bore (102) that extends from the holder base surface to a holder peripheral surface. The holder through bore (102) is located entirely on one side of a longitudinal plane containing the holder longitudinal axis (D). When a cutting tool (20) which includes the cutting head (22) and tool holder (24) is in a fastened position, the head coupling pin is removably retained within the holder coupling hole (96) upon engagement with the fastening member (26).
A cutting head (20) rotatable about a head axis (AH) has a pair of first cutting arms (26) circumferentially alternating with a pair of second cutting arms (28). Each first cutting arm (26) has a radially extending first cutting edge (32), which includes a first radially outer (36) and a first radially inner (38) cutting-edge portion. The first radially inner cutting-edge portion (36) defines an imaginary first circle having a first diameter, and has a first inner cutting profile. Each second cutting arm (28) has a radially extending second cutting edge (40). The second cutting edge (40) defines an imaginary second circle having a second diameter, and has a second cutting profile. The first diameter is greater than the second diameter, and the first inner cutting profile is identical to the second cutting profile. A rotary cutting tool has an elongated tool shank and the cutting head (20) of the type described above disposed at a front end of the tool shank.
A cutting head rotatable about a head axis has a pair of first cutting arms circumferentially alternating with a pair of second cutting arms. Each first cutting arm has a radially extending first cutting edge, which includes a first radially outer and a first radially inner cutting-edge portion. The first radially inner cutting-edge portion defines an imaginary first circle having a first diameter, and has a first inner cutting profile. Each second cutting arm has a radially extending second cutting edge. The second cutting edge defines an imaginary second circle having a second diameter, and has a second cutting profile. The first diameter is greater than the second diameter, and the first inner cutting profile is identical to the second cutting profile. A rotary cutting tool has an elongated tool shank and the cutting head of the type described above disposed at a front end of the tool shank.
The invention provides a cutting insert, a body, and a cutting tool that can limit thickness while allowing a total of four cutting edges to be used by switching. A cutting insert 30 to be mounted on a body 20 of a cutting tool 10 includes: a first cutting face 411 hexagonal in shape by being made up of one end face 110 of a pair of end faces 110 and 120 opposed to each other; a pair of first cutting edges 311 and 312 formed along a pair of sides 111 and 114 opposed to each other among sides marking off the first cutting face 411; second cutting faces 421 and 422 trapezoidal in shape by being made up of a pair of side faces 210 and 220 opposed to each other; and second cutting edges 321 and 322 each formed along one 210 or 220 of sides marking off each of the second cutting faces 421 and 422.
Provided is a structure for improving accuracy in attaching a cutting tool to a body and making it possible to increase the number of blades while the cutting tool is mounted on the body. A cutting insert 1 includes: an upper surface 10 that has a shape with a lengthwise direction LD and a widthwise direction SD; a lower surface that is located opposite to the upper surface 10; a peripheral side surface 30 that is formed so as to connect the upper surface 10 and the lower surface; cutting edges 51 and 52 that are respectively formed on an intersecting ridge line of the upper surface 10 and the peripheral side surface 30, and on an intersecting ridge line of the lower surface and the peripheral side surface 30, and each have a curved ridge line that extends in a lengthwise direction thereof; and a through hole 60 that penetrates from the upper surface 10 to the lower surface. End surfaces 31 and 32 located in the lengthwise direction LD of the upper surface 10 and the lower surface, of the peripheral side surface 30, are respectively inclined with respect to the upper surface 10 and the lower surface, and are parallel to each other. A reference surface 33 that is located opposite to the cutting edges 51 and 52, of the peripheral side surface 30, is a flat surface that is orthogonal to the upper surface 10 and the lower surface.
A cutting tool with sufficient stiffness of a body is provided.
A cutting tool with sufficient stiffness of a body is provided.
A cutting tool 10 includes a body 100 in which a discharge groove 120 for guiding and discharging chips is formed, and a cutting insert 200 fastened and fixed on a distal end side of the body 100. The cutting insert 200 includes a first surface 210 through which a through-hole 230 is opened, and a major cutting edge 231 formed so as to extend straight at an end part of the first surface 210. A protrusion portion 130 protruding so as to cover part of the first surface 210 of the cutting insert 200 from outside is formed at the body 100. A clearance hole 170 is formed so as to extend from a surface of the body 100 opposite the cutting insert 200 toward a corner cutting edge 242 when viewed from the distal end side along a central axis AX1.
Cutting tools for use with Swiss-type machines intended for
the processing of small parts and the processing of screws,
including turning tools, grooving tools, and interchangeable
cutting tool holders for them.
Cutting tools, namely, turning tools, grooving tools,
parting tools, blades and cutting inserts therefor for use
with power operated machines; adapters and adapter holders
for use with cutting tools.
85.
CUTTING HEAD HAVING ROTATIONALLY ASYMMETRIC COUPLING PIN, TOOL SHANK AND CUTTING TOOL
A cutting tool includes a cutting head and a tool shank, each having an axial abutment surface. One of the two includes a coupling pin, while the other includes a pin receptacle and a clamping through bore that opens out to the pin receptacle. The coupling pin has an engagement groove and the pin receptacle has an engagement ridge. The coupling pin is received into the pin receptacle. The cutting head and tool shank are releasably attached together by a fastening member that passes through the clamping through bore and acts on the coupling pin so that the engagement groove abuts the engagement ridge and the axial abutment surfaces on each part abut each other.
A cutting tool (20) includes a cutting head (22) and a tool shank (24), each having an axial abutment surface (66,76a). One of the two includes a coupling pin (38), while the other includes a pin receptacle (80) and a clamping through bore (96) that opens out to the pin receptacle. The coupling pin (38) has an engagement groove (52) and the pin receptacle has an engagement ridge(90). The coupling pin is received into the pin receptacle. The cutting head and tool shank are releasably attached together by a fastening member that passes through the clamping through bore and acts on the coupling pin so that the engagement groove abuts the engagement ridge and the axial abutment surfaces on each part abut each other.
A cutting insert, a holder, and a cutting tool with which the cutting insert can be easily and stably mounted on the holder and a fabrication target object can be excellently fabricated are provided. A cutting tool 100 that is used to fabricate a fabrication target object W by cutting includes a holder 50 and a cutting insert 10 that is mounted on a distal end of the holder 50. The holder 50 includes an insert pocket 53 into which the cutting insert 10 is fitted and a stopper portion 61 that elastically locks the cutting insert 10 to be fitted into the insert pocket 53. The cutting insert 10 includes a cutting portion 11 including a cutting edge 13, a fitting portion 12 that is fitted into the insert pocket 53, and a lock portion 21 that is formed at the fitting portion 12 and is to be locked to the stopper portion 61 of the holder 50.
A cutting tool able to sufficiently supply coolant toward a cutting edge of a cutting insert during a cutting process involving grooving a workpiece face includes a first flow path through which coolant is supplied toward a body leading end side, a first jetting port, a second flow path branching at a branch point along the first flow path, a second jetting port, and a guide member having a guide surface distanced from the second jetting port and forming a space for coolant to flow to the cutting edge from the second jetting port. In the first flow path, a substantially straight upstream-of-branch flow path on further toward a base end side than the branch point is at least twice as long as a downstream-of-branch flow path from the first jetting port to the branch point. The second flow path inclines at a 30° to 85° angle to the upstream-of-branch flow path.
A body of a cutting tool and a cutting insert which can further improve support stiffness of the cutting insert are provided.
A body of a cutting tool and a cutting insert which can further improve support stiffness of the cutting insert are provided.
A body of a cutting tool includes an insert seat provided on a leading end part of the body, a screw hole with which a fastening screw is screwed, a deep seat portion provided at a deep part in the insert seat in an axial direction of the screw hole, a receiving portion receiving a contact portion of the cutting insert, a wall portion having a base-end side rotation suppression portion which stops rotation of the cutting insert, and a shallow seat portion, the depth of a seat thereof being shallower than a part with the receiving portion, wherein the base-end side rotation suppression portion is positioned not to overlap the deep seat portion when viewed along a screw-hole axis.
A tool body having a longitudinal body axis has a central body recess recessed in a rear body surface thereof. The recess includes an inner recess surface, and a body recess peripheral surface extending between the inner recess surface and the rear body surface. An integral central pin extends rearwardly from the inner recess surface, and having an integral pin length measured along the longitudinal body axis from the inner recess surface to a rear pin surface thereof. In a circumferential direction about the longitudinal body axis, the body recess peripheral surface alternatingly increases and decreases in distance from the longitudinal body axis, thereby forming a plurality of angularly spaced apart longitudinal axis crests. A tool holder has a protrusion with complementary surfaces to engage the tool body. A fastening member, such as a lock nut, secures the tool body to the tool holder to form a cutting tool.
Cutting tools, namely, turning tools, grooving tools, parting tools, blades and cutting inserts therefor for use with power operated machines; adapters and adapter holders for use with power-operated machine tools for cutting
