552results about "Cutting inserts" patented technology

A tool holder for a tool for machining a workpiece. The tool holder has a cutting insert receptacle for receiving a cutting insert, wherein the cutting insert receptacle has an upper clamping jaw for abutting an upper surface of the cutting insert and a lower clamping jaw for abutting a lower surface of the cutting insert opposite the upper surface. Further, the tool holder has an internal coolant channel extending inside the tool holder between a coolant inlet opening and a coolant outlet opening, wherein an end portion of the coolant channel extending inside the upper clamping jaw along a channel center axis opens into the coolant outlet opening. The coolant outlet opening is arranged at the upper clamping jaw and configured as an elongated opening. A width of the coolant outlet opening is smaller than a height of the coolant outlet opening measured orthogonally to the width of the coolant outlet opening. The end portion of the coolant channel is also elongated in a cross-section orthogonal to the channel center axis. A width of the end portion measured orthogonal to the channel center axis is smaller than a height of the end portion measured orthogonal to the channel center axis and orthogonal to the width of the end portion.

A turning toolholder includes a shank, a club head, and a clamp and a clamp screw for clamping a cutting insert. The club head includes a clamp coolant supply hole in fluid communication, a flank coolant supply hole and an auxiliary rake coolant supply hole, all in fluid communication with the main coolant supply hole. Coolant is supplied through a rake coolant exit opening formed in the forward nose portion of the clamp to direct coolant to the top rake surface of the cutting insert, and coolant is supplied through a flank coolant exit opening located below the insert-receiving pocket to provide coolant to the side flank surfaces of the cutting insert. In addition, an auxiliary rake coolant supply housing formed on a top surface of the club head supplies additional coolant to the top rake surface of the cutting insert during high heat applications.

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 low cut-in pulling processing, a third cutting edge portion for high cut-in pulling processing, a fourth cutting edge portion for finished-surface processing, a first connection cutting edge portion, a second connection cutting edge portion, and a third connection cutting edge portion. The fourth cutting edge portion is disposed between the first cutting edge portion and the second cutting edge portion. The second cutting edge portion is disposed between the fourth cutting edge portion and the third cutting edge portion. Each of the first cutting edge portion, the second cutting edge portion, and the fourth cutting edge portion has a curved shape.

A cutting insert has a top surface, a bottom surface, and an outer peripheral surface. A ridgeline between the top surface and the outer peripheral surface includes a first cutting edge. A protrusion is provided on the top surface. In a first cross section, a distance between the first cutting edge and the protrusion in a direction perpendicular to the bottom surface is defined as a first distance. In a second cross section, a distance between the first cutting edge and the protrusion in a direction perpendicular to the bottom surface is defined as a third distance. The third distance is longer than the first distance. A ratio of a height of the protrusion to a width of the protrusion in the second cross section is smaller than a ratio of a height of the protrusion to a width of the protrusion in the first cross section.

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 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.

The invention relates to the technical field of machining numerical control tools, in particular to a multifunctional indexable heavy boring head which comprises a main body, a blade seat and a blade, the main body comprises a body, a seat body and a connecting part which are integrally formed, the blade is fixedly installed on the blade seat, the seat body comprises a seat body H and a seat body S, the seat body H is higher than the seat body S, and the connecting part is connected with the seat body H; the blade seat comprises a blade seat H and a blade seat S, the blade seat H is higher than the blade seat S, the blade seat H is fixedly installed on one seat body, and the blade seat S is fixedly installed on the other seat body. The device has the advantages that the device is simple in overall structural design, easy to understand by an operator, small in accessory type number and convenient to assemble; by means of the same double-edge heavy boring head, switching between symmetrical boring and stepped boring can be achieved only by adjusting the position of the tool changing base on the base body and then adjusting the blade in the radial direction, tool changing is not needed, production efficiency is improved, switching is easy and convenient, and the tool storage pressure of a tool stock is reduced.

A metal cutting tool holder (1) for use with a cutting insert (12), said tool holder (1) comprising a tool holder body (2), having a pocket (3) for receiving the cutting insert (12), a clamp (4), which is adapted to engage the cutting insert (12), when the cutting insert is received in the pocket (3), and is releasably mounted to the tool holder body (2), a rod device (5) connecting the clamp (4) to the tool holder body (2), the clamp (4) being movable from a first clamp position, in which the clamp (4) is disengaged from the cutting insert (12), to a second clamp position, in which said clamp (4) engages the cutting insert (12) for securing the cutting insert (12) in the pocket (3) of the tool holder body (2). The tool holder (1) comprises a rotatable member (6), which is connected to the rod device (5) to be rotatable around a rotational axis (R) from a first rotational position to a second rotational position, the rotatable member (6) comprising a first engagement portion (7) which is arranged to engage a second engagement portion (8) of the tool holder (1), the rotatable member (6) forming a first distance (D1) between the rotational axis (R) and a first contact point (CP1) of the first engagement portion (7) and forming a second distance (D2) between the rotational axis (R) and a second contact point (CP2) of the first engagement portion (7), said second distance (D2) being larger than said first distance (D1), the first contact point (CP1) being arranged to engage the second engagement portion (8) in the first rotational position and the second contact point (CP2) being arranged to engage the second engagement portion (8) in the second rotational position, such that a rotation of the rotatable member (6) from the first rotational position to the second rotational position causes the clamp (4) to move into said second clamp position.

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 cutting insert includes an upper surface, a front side surface, a first corner side surface, a front cutting edge, and a first corner cutting edge. The upper surface includes a front land surface extending along the front cutting edge, a first corner land surface extending along the first corner cutting edge, a front groove extending inwardly with respect to the front land surface, and a first corner groove extending inwardly with respect to the first corner land surface. The length of the first corner groove is shorter than the length of the front groove.

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.

To provide a body provided with a flow passage having a sufficient cross-sectional area while securing sufficient rigidity, and a cutting tool.SOLUTION: A body 10 of a cutting tool 1 includes: an insert pocket 20 to which a cutting insert 60 is attached; a screw hole 22 into which an insert mounting screw 70 for fastening the cutting insert 60 to the insert pocket 20 is screwed and inserted; and a chip discharging coolant flow passage 50 for discharging coolant C from a discharge port 52 open at a tip. In a cross section orthogonal to an axial direction, at least a portion of the chip discharging coolant flow passage 50 has a distance Da from the insert pocket 20, a distance Db from the screw hole 22, and a distance Dc from an outer periphery 10c of the body 10 which are equal to or larger than a prescribed dimension.SELECTED DRAWING: Figure 5

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.

To provide a fixation member that satisfactorily feeds a fluid such as coolant or the like into a flow channel of itself and can discharge it from a discharge port to a cutting place, and a cutting tool.SOLUTION: A fixation member 50, which presses and fixes a cutting insert 40 located on an insert attachment part 12 of a tool body 10, has: a fixation member body 51 having a pressing part 55 which presses the cutting insert 40; a fitting projection 52 which is projected from a bottom of the fixation member body 51, and is fitted into a fitting hole 21 formed in the tool body 10; and a coolant introduction flow channel 71, a coolant discharge flow channel 72 and coolant reservoir 73 that guide a coolant fed from a coolant branch flow channel 32 of the tool body 10 to a discharge port 72a formed at a tip of the fixation member body 51 and discharge the coolant. On an outer peripheral surface of the fitting projection 52, an inflow port 74 of the coolant introduction flow channel 71 communicating with an outflow port 26 of the coolant branch flow channel 32 of the tool body 10 is formed.SELECTED DRAWING: Figure 3

A cutting insert may include an upper surface, a lower surface, a lateral surface and a cutting edge. The upper surface may include a first corner, a first side, a second side and a rake surface. The cutting edge may include a first cutting edge located on the first corner, and a second cutting edge located on the first side. The first cutting edge may include a first part. The first part may be located between a midportion of the first corner and the first side, and may come closer to a reference plane as going away from the first side. The rake surface may include a first region located along the first part. A rake angle in the first region may become smaller as coming closer to the midportion of the first corner.

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 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 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).

The invention belongs to the field of boring cutters, and particularly relates to a multipurpose deep hole boring cutter bit which comprises a cutter holder, a supporting block and a boring cutter bit body, a fixing groove is formed in the cutter holder, the supporting block is arranged in the fixing groove, the boring cutter bit body is arranged in the supporting block, and the side wall of the cutter holder is in threaded connection with an adjusting bolt. According to the boring tool bit, the problem of shaking caused by the size adaptation problem of the supporting block and the fixing groove in the prior art is solved through the hydraulic device, when the supporting block is installed, the supporting block is fixed through the hydraulic device, and the supporting block is fixed through the hydraulic device. The hydraulic oil suction pump is started, the limiting ejector rod is pushed through hydraulic oil, the stretching-out position can be flexibly adjusted according to the shape change of the supporting blocks, the limiting ejector rod is precisely matched with the supporting blocks of different shapes, stable limiting and fixing are achieved, multiple gaskets of different sizes do not need to be prepared, and special-shaped gaskets do not need to be specially customized.

A cutting insert includes a corner cutting region and a cooling channel formed in a wall cavity. The cutting insert includes a body having an upper insert surface, a lower insert surface defining a lower insert plane, and at least one sidewall extending therebetween. The corner cutting region is defined between the at least one sidewall and the upper insert surface. The at least one sidewall is formed with at least one cooling channel formed in a wall cavity defining a coolant flow' path having an upstream section with a coolant inlet facing the lower insert plane. The coolant flow' path further has a downstream section extending beneath the corner cutting region. The coolant flow' path is at least partially exposed to an exterior of the cutting insert and includes an arcuate portion between the upstream section and the downstream section.

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.

The present invention can realize better cutting performance while suppressing an influence of, for instance, deflection of a head and an increase in a moment acting on a fastening mechanism even when a cutting insert of a long total length is used. A shank of a head replaceable type cutting tool includes: a fastening mechanism that is formed at a leading end part in a longitudinal direction of the shank, and attaches a head; and a recessed part that is formed at the leading end part so as to accommodate a part of a cutting insert held by the head and avoid an interference with the cutting insert. The recessed part may be provided to accommodate a non-use part of the cutting insert held by the head in a state where the head is attached to the leading end part, and avoid an interference with the cutting insert.

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 cutting insert for a machining tool having a cutting edge and a flute extending along the cutting edge is described. A chip breaker element which projects into the interior of the flute is disposed in the flute. Said chip breaker element comprises a chip guiding surface and each point of the chip guiding surface has a spacing from a flute contour that is greater than zero. The chip guiding surface furthermore either extends parallel to the flute contour and / or curved along two directions. A machining tool having such a cutting insert is presented as well.

An insert includes a base which includes a first surface, a second surface connecting to the first surface, and a cutting edge located on at least a part of a ridgeline of the first surface and the second surface. The first surface includes a plurality of grooves located at a position away from the ridgeline and extended at an angle of 20-90° relative to the ridgeline. The grooves are away from the ridgeline in a range of 40-700 μm. A width W of the grooves is 50-700 μm, and a depth D of the grooves is 20-700 μm. Spacing S between the grooves adjacent to each other is 50-700 μm. A cutting tool includes a holder, which has a length extending from a first end to a second end and includes a pocket located on a side of the first end, and the insert is located in the pocket.