243results about "Cutting inserts" patented technology

A cutting tool includes a tool body having at least one seat for receiving a cartridge or a cutting insert. The seat includes at least one support surface. The cutting tool body includes a sensor retaining structure adjoining the support surface and a piezo sensor arranged in the sensor retaining structure. The cutting tool has a clamping device for securing the cartridge or cutting insert. The piezo sensor is an elastically deformable piezo sensor, which has a central longitudinal axis and a direction of sensitivity perpendicular to the central longitudinal axis. The piezo sensor has a measuring section, along which the central longitudinal axis is substantially parallel to the support surface. The piezo sensor is elastically deformed in the sensor retaining structure to a pre-stressed initial state and deformable to a plurality of further stressed measuring states.

A cutting tool includes: a cutting edge configured on an intersecting line of a rake surface and a flank; a breaker wall formed inside the cutting edge and protruding above the cutting tool; a boss part including a boss surface formed above the breaker wall; and a plurality of recessed parts formed in the boss part so as to extend toward the cutting edge. The width of the breaker wall in a direction in which the cutting edge extends along an intersecting line (including a virtual intersecting line or a virtual extension of the intersecting line) of the boss surface and the breaker wall, is greater than the width of a groove formed by the recessed part along the same intersecting line.

A cutting insert according to an aspect includes a base portion and a cutting portion. The cutting portion includes a front end surface, an top surface, a first lateral surface, a second lateral surface, a front cutting edge, and a lateral cutting edge. The front cutting edge includes a first cutting edge and a second cutting edge, and a radius of curvature of the first cutting edge is greater than a radius of curvature of the second cutting edge.

A machining method for cutting process by making a workpiece (W) and a cutting tool (11) move relatively, characterized by using a cutting tool (11) comprising a cutting insert (28) having a first curved part (40a), a second curved part (40c) formed continuing from the first curved part (40a) and with a curvature smaller than the first curved part (40a), and a connecting part (40b) connecting the first curved part (40a) and the second curved part (40c) and by cutting while positioning the connecting part (40b) at the front end in the cut direction perpendicular to the direction of relative movement at the time of cutting.

The invention relates to a cutting insert (1, 10) for a turning tool. The cutting insert comprises a top surface (2), a bottom surface (3), a front surface (6), a rear surface (7) and first and second side surfaces (4, 5). A longitudinal axis (A1) intersects the front and rear surfaces (6, 7) and extends mid-way between the first and second side surfaces (4, 5). A cutting edge (8) is formed at an intersection between the top surface (2) and the front surface (6), wherein the cutting edge (8) comprises a surface generating cutting edge (9), a first major cutting edge portion (17) and a first corner cutting edge (15). The first major cutting edge portion (17) extends rearward from the surface generating cutting edge (9), and the first corner cutting edge (15) extends rearward from the first major cutting edge portion (17). In a plan view of the top surface, the first corner cutting edge (15) is convexly curved and has a first length of extension (L1) and the surface generating cutting edge (9) is convexly curved and has a second length of extension (L2), wherein the first length of extension (L1) is greater than the second length of extension (L2).

A grooving or part-off tool assembly for Swiss-style machining includes a holder. The holder includes a resilient normally-closed holder clamp. In a preferred embodiment the holder clamp biases a blade holding a cutting insert against a pocket side abutment surface of a holder pocket.

A cutting tool includes: a cutting edge configured on an intersecting line of a rake surface and a flank; a breaker wall formed inside the cutting edge and protruding above the cutting tool; a boss part including a boss surface formed above the breaker wall; and a plurality of recessed parts formed in the boss part so as to extend toward the cutting edge. The width of the breaker wall in a direction in which the cutting edge extends along an intersecting line (including a virtual intersecting line or a virtual extension of the intersecting line) of the boss surface and the breaker wall, is greater than the width of a groove formed by the recessed part along the same intersecting line.

A rotary tool (2) is specified, comprising a cutting insert (4) having at least one cutting portion (10) and a fastening portion (12), where the fastening portion (12) has a fastening surface (40), and a clamping holder (6) having a support projection (26) and a support (24), where the support projection (26) and the support (24) are configured to support the cutting portion (10) and the fastening portion (12). Wherein the fastening part (12) has a fastening part upper side (30) and a fastening part lower side (32), each of which is designed in a stepped manner in the axial direction (A), and wherein an upper side part surface (34) of the fastening part upper side (30) bears against a support projection surface (52) of the support projection (26), and an underside part surface (36, 38) of the fastening part underside (32) abuts against the support (24). A cutting insert (4) and a clamping holder (6) are also specified.

A system for automated mounting and dismounting of at least one cutting insert on a tool body with a screwing tool is provided. The cutting insert includes a top surface, a bottom surface, a circumferential side surface connecting the top and bottom surfaces, and a through hole extending from the top surface to the bottom surface for receiving the shaft of a fastening screw. A carrier device is arranged to pick up and release the cutting insert with the fastening screw. The carrier device has a body having a front surface, a rear surface, a circumferential side surface connecting the front and rear surfaces, and a channel extending from a front end opening in the front surface to a rear end opening in the rear surface. A method for automated mounting of a cutting insert with a fastening screw on a tool body is also provided.

A cutting insert includes: a rake face; a flank face; and a cutting edge constituted of a ridgeline between the rake face and the flank face. The cutting edge has a first cutting edge portion for corner processing, a second cutting edge portion for pulling processing, a third cutting edge portion for finished-surface processing, a first connection cutting edge portion, and a second connection cutting edge portion. The third cutting edge portion is disposed between the first cutting edge portion and the second cutting edge portion. The first cutting edge portion has a curved shape. A curvature radius of the first cutting edge portion is 0.1 mm or more and 2.4 mm or less. The second cutting edge portion has a straight line shape or a curved shape having a curvature radius of 3 mm or more.

The present invention discloses an insert adaptor for parting off having an adaptor index axis and comprising: parallel and planar adaptor first and second sides connected by an adaptor peripheral surface which extends peripherally around the adaptor; the adaptor index axis extending through the center of the first and second sides; wherein the adaptor peripheral surface is formed with a plurality of pockets which are configured for resilient clamping and bearing surfaces extending between the pockets; characterized in that: the insert adaptor has a material volume of greater than 50% of an imaginary cylinder encompassing the insert adapter; and each of the bearing surfaces are straight.

The objective of the present invention is to provide a quick-change type tool shank structure with high positioning accuracy. [Solution] The tool holder includes a head portion, a tool holder, and a tool shank which are connected in sequence, a communication through hole is provided in the center of the tool holder and the tool shank, two threaded bolts are provided in the through hole, both ends of the two threaded bolts are connected to the head portion and the tool shank, respectively, and a head portion fitting hole is provided on the inner cylindrical surface of the end of the through hole of the tool holder which is closer to the head portion, and the head portion fitting hole is fitted and connected to the head portion. The present invention has the following advantageous effects: The head portion and the tool shank are connected by two threaded bolts, and the tool holder does not need to be threaded, so that a hard alloy material can be used for the tool holder, and further, in combination with the structure of the fitting hole, the technical problem that the structure of the conventional tool shank is too complicated is solved, and a tool holder structure which is simple in structure and has high positioning accuracy is obtained.

In a cutting tool having an indexable cutting insert (20) with exactly four cutting portions (26), the cutting insert is removably securable to an insert holder by a fastener. The cutting insert (20) has two opposing end surfaces (22) with a peripheral side surface (24) extending therebetween, and each cutting portion (26) has a major cutting edge (28) formed by the intersection of a rake surface (30) and a relief surface (32). The peripheral side surface (24) has first and second pairs of opposing side surfaces (34, 36) which include the four relief surfaces (32) and the four rake surfaces (30), respectively. In an end view, four cutting points on the four major cutting edges (28) define the transitions between the first and second pairs of opposing side surfaces (34, 36), and a minimum first length dimension between the second pair of opposing side surfaces (36) is less than six-tenths of a minimum second length dimension between two of the four cutting points.

To improve rigidity of a cutting tool having a cutting insert and make a space occupied by the cutting tool narrower.SOLUTION: In a cutting insert 10, which has a first end face 11. a second end face 12 and a circumferential side face 13 connecting the first end face 11 to the second end face 12 and comprising a cutting blade 21, contour shapes of the first end face 11 and the second end face 12 have longitudinal directions and transverse directions respectively, and a rake face 22 facing the respective longitudinal directions of the first end face 11 and the second end face 12 is provided on at least a portion of the circumferential side face 13.SELECTED DRAWING: Figure 3

The invention relates to a tool (10) for machining a workpiece, comprising a tool holder (12) extending along a holder longitudinal axis (36) and an insert (14) which can be fastened to the tool holder (12) by means of a fastening element (18). The tool (10) is particularly suitable for profile turning. According to the invention, a projection (68) is arranged on the insert (14), said projection projecting from an insert-side bearing surface (66), said projection engaging in a recess (40) provided on the tool holder in the mounted state of the tool (10), said recess leading into a holder-side bearing surface (38). Three blade-side contact surfaces (72, 74, 76), which are oriented transversely to one another, are arranged laterally on the projection (68), wherein two contact surfaces bear against two holder-side contact surfaces (44, 46) forming a side wall of the recess (40) in the mounted state of the tool (10). In addition, in the mounted state of the tool (10), the blade (14) bears with its blade-side bearing surface (66) against the holder-side bearing surface (38) of the tool holder (12).

An embodiment of a cutting insert is provided. The cutting insert includes an upper surface, a lower surface, a plurality of side surfaces extending between the upper surface and the lower surface, an insertion hole extending through the upper surface and the lower surface, and a corner portion provided with a cutting edge. At least one of the upper surface and the lower surface has a plurality of recesses extending between the insertion hole and the corner portion. The plurality of recesses includes a first recess into which a portion of a mounting portion is inserted when the cutting insert is supported by the mounting portion and a second recess into which another portion of the mounting portion is inserted when the cutting insert is supported by the mounting portion. The second recess has a sidewall spaced apart from the another portion of the mounting portion.

The invention discloses a cutting blade and a cutting tool, and relates to the technical field of cutting tools, the cutting blade comprises two opposite end surfaces along a first direction, each end surface comprises a mounting surface and two cutting areas; the peripheral side surface is connected with the two end surfaces and comprises two supporting surfaces which are opposite in the second direction and two side surfaces which are opposite in the third direction, and a first cutting edge, a second cutting edge and a third cutting edge are sequentially formed between the first cutting part, the second cutting part and the third cutting part which are distributed in the cutting area along the peripheral edge and the supporting surfaces as well as between the supporting surfaces and the side surfaces; the first cutting part is far away from the other cutting area in the second direction and obliquely extends close to the surface of the other end in the direction far away from the connected second cutting part in the third direction, and the second cutting part and the third cutting part are both far away from the other cutting area in the second direction and obliquely extend far away from the surface of the other end in the direction far away from the connected first cutting part in the third direction. According to the cutting blade, installation is stable, and the chip removal efficiency and the structural strength are high.

A coated tool includes a base body and a coating film. The coated tool has a first surface with a rake face, a second surface with a flank face, and a third surface located between the first surface and the second surface and being a C surface or an R surface. The coating film includes a first coating film located on the first surface and / or a second coating film located on the second surface, and a third coating film located on the third surface. A wavenumber of a maximum Raman peak of the first coating film is a first wavenumber, a wavenumber of a maximum Raman peak of the second coating film is a second wavenumber, and a wavenumber of the maximum Raman peak of the third coating film is a third wavenumber. The third wavenumber is smaller than the first wavenumber and the second wavenumber.

The invention relates to a turning tool (1) comprising a tool body (2) having an insert seat (5) configured to receive a cutting insert (6a-c). The insert seat (5) comprises a bottom surface and a first side wall section (8a) and a second side wall section (8b), the bottom surface together with the first and second side wall sections defining a space for receiving the cutting insert. The insert holder (5) further comprises a rigid member (17) integrally formed by a first end portion (18a) thereof to an upper portion of the first side wall section (8a) and by a second end portion (18b) thereof to an upper portion of the second side wall section (8b), the side wall sections are arranged above the space so as to extend between the side wall sections above the space and are rigidly connected with the side wall sections. The invention also relates to a turning tool assembly comprising such a turning tool (1) and a cutting insert (6a-c).

Provided is a cutting tool (1) that simultaneously improves both fracture resistance and wear resistance. The cutting tool according to the present invention has an end surface (10), a peripheral side surface (12) intersecting with the end surface, and a cutting edge (20) in an intersecting ridge part along the end surface and the peripheral side surface, and when first and second points A and B are defined on the cutting edge, the first point A protrudes further toward an outer side of the cutting tool than the second point B. The cutting edge has a honing surface (21). The honing surface has a portion, the width of which gradually increases from the first point A toward the second point B.

A cutting tool, comprising a substrate and a coating disposed on the substrate,wherein the coating comprises a first layer,the first layer consists of an alternate layer in which a first unit layer and a second unit layer are alternately stacked,the first unit layer is composed of AlaTi(1-a-b)SibN,the second unit layer is composed of AlcCr(1-c-d)CudN,the a, the b, the c, and the d satisfy0.50≤a≤0.75,0.005≤b≤0.20,0.50≤c≤0.85, and0.005≤d<0.10,an average thickness of the first unit layer is 2 nm or more and 50 nm or less, andan average thickness of the second unit layer is 2 nm or more and 50 nm or less.

The present disclosure provides a body (10) comprising an insert pocket (11) into which a cutting insert (50) is mounted, the insert pocket including: a lower jaw part (13) having a screw hole (18); an upper jaw part (15) that is arranged apart from the lower jaw part; and a housing groove part into which the cutting insert (50) 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 tool, comprising a substrate and a coating disposed on the substrate,wherein the coating comprises a first layer,the first layer consists of an alternate layer in which a first unit layer and a second unit layer are alternately stacked,the first unit layer is composed of AlaTi(1-a-b)SibN,the second unit layer is composed of AlcCr(1-c-d)AgdN,the a, the b, the c, and the d satisfy0.5≤a≤0.7⁢5,0.005≤b≤0.2⁢0,0.5≤c≤0.85,and0.005≤d<0.1⁢0,an average thickness of the first unit layer is 2 nm or more and 50 nm or less, andan average thickness of the second unit layer is 2 nm or more and 50 nm or less.

To provide a cutting insert such that a tool body can sufficiently hold the cutting insert even if one of cutting parts is broken. The cutting insert includes two side surfaces opposed to each other, a fixing hole passing through the centers of the two side surfaces, and an outer circumferential surface that is disposed between the outer circumferential edges of the two side surfaces and are connected to the outer circumferential edges of the two side surfaces. The outer circumferential surface includes four cutting parts, a first outer circumferential surface part that is disposed between the first cutting part and the second cutting part, and a second outer circumferential surface part that is opposed to the first outer circumferential surface part and is disposed between the third cutting part and the fourth cutting part. In a side view of the side surfaces from the axial direction of the fixing hole, the first outer circumferential surface part and the second outer circumferential surface part each have the center recessed toward the fixing hole, and a virtual arc having the same diameter as the diameter of the circumcircle of the cutting insert is in contact with two points on each of the outer circumferential surface parts.

A metal cutting drill insert for a drill tool has opposing top and bottom surfaces with a symmetry axis extending therebetween. At least one stepped cutting edge is configured to cut a continuous chip along the at least one stepped cutting edge. The at least one stepped cutting edge is formed at an intersection of a rake face and an adjoining clearance face of the side surface. In a top view facing the top surface the at least one stepped cutting edge includes a step formed by a transitional edge between a first part and a second part edge. The step extends in a radial direction relative the symmetry axis by a first distance h1, and in a side view facing the side surface the step extends in a direction from the bottom surface towards the top surface by a second distance h2, wherein 0.8·h1≤h2≤1.2·h1.

A cutting insert for a modular rotary cutting tool is disclosed. The cutting insert may include a shaft, an opposing insert centering surface, and a convex torque transmitting insert driving surface.

A cutting tool, comprising a substrate and a coating disposed on the substrate,wherein the coating comprises a first layer,the first layer consists of an alternate layer in which a first unit layer and a second unit layer are alternately stacked,the first unit layer is composed of AlaTi(1-a-b)SibN,the second unit layer is composed of AlcCr(1-c-d)AgdN,the a, the b, the c, and the d satisfy0.50≤a≤0.75,0.005≤b≤0.20,0.50≤c≤0.85, and0.005≤d<0.10,an average thickness of the first unit layer is 2 nm or more and 50 nm or less, andan average thickness of the second unit layer is 2 nm or more and 50 nm or less.

In order to improve the performance of supplying a cooling liquid to a cutting edge and further improve chip processing performance and durability performance, provided is a cutting tool comprising: a cutting edge (26) formed on the intersecting line of a rake face (22) and a flank face (24); a chip breaker wall (28) formed on the inner side of the cutting edge (26) and protruding upward of the cutting tool; the boss part (30) comprises a boss surface (32) formed above the chip breaker groove wall (28); and a plurality of recesses (36) formed in the boss (30) and extending toward the cutting edge (26). The width (W28) of the cutting edge (26) of the breaker wall (28) in the direction of extension of a line (L1) of intersection of the boss surface (32) and the breaker wall (28) (including a virtual intersection line or a virtual extension line of the intersection line) is wider than the width (W38) of a groove (38) formed by the recess (36) on the intersection line (L1).

The present invention relates to a cutting tool for metal cutting comprising a tool holder (1) having a holder body provided with an insert seat, which insert seat (2) comprises an abutment surface (13), and a cutting insert (3) removably received in the insert seat. The cutting insert has an overall geometry defined by a top surface (6), a bottom surface (7) and a circumferential side surface (8) connecting the top surface (6) and the bottom surface (7), A top edge (9) is formed at the intersection of the top surface (6) with the side surface (8), wherein at least a portion of the top edge (9) constitutes a top cutting edge (12). A bottom edge (10) is formed at the intersection of the bottom surface (7) with side surface (8). The side surface comprises a support surface, which support surface is in contact with the abutment surface (13) in a contact area (15), wherein the contact area (15) has a top limit at a top edge side and a bottom limit at a bottom edge side. An elongated groove (16) is arranged in the contact area, which groove has a top end (17) and extends downward toward the bottom surface (7) from the top end (17). The groove (16) extends across the contact area (15) and intersects the top limit and the bottom limit of the contact area (15), and the top end (17) of the groove (16) is located at a distance (20) of at least 0,3 mm from the top cutting edge (12).

A cutting insert (10) comprising a front face (21), an upper surface (22), a side face (24), a front cutting edge (23), and a side cutting edge (25), the upper surface (22) comprising a first front region (221) connected to the front cutting edge (23) and inclined downwards, a second front region (222) connected to the first front region (221) and inclined downwards, a first side region (225) connected to the side cutting edge (25) and inclined downwards, and a second side region (226) connected to the second front region (222) and inclined downwards, the second side area (226) is connected with the first side area (225) and inclines downwards, the end portion, close to the side cutting edge (25), of the joint of the first front area (221) and the second front area (222) is a first end portion (224), the end portion, close to the front cutting edge (23), of the joint of the first side area (225) and the second side area (226) is a second end portion (228), and the first end portion (224) is farther away from the front cutting edge (23) than the second end portion (228). The cutting insert (10) enables cuttings to be easily curled and smoothly discharged.