111results about "Milling cutting inserts" patented technology

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.

A rotary cutting method includes producing a processed product by rotary cutting of a workpiece by a rotary tool. The rotary tool has at least one cutting edge of which both of a first rake angle in a rotation radial direction and a second rake angle in a rotation axis direction are negative. The at least one cutting edge has a slanted face connected with a rake face forming the first and second rake angles. The slanted face is connected with the rake face at a ridge line. The slanted face faces a rotating direction of the rotary tool. An angle of the slanted face to the rotation axis direction is positive.

The invention relates to a method for forming a chamfer (21) at an edge (20) defined by an end face (22) of a gear wheel (3) and a tooth surface (6, 7) adjoining the tooth portion of the gear wheel (3) using a cutting tool (1) having at least one cutting edge (11). Furthermore, the invention relates to a cutting tool for carrying out the method and to a blade, a device and a control program for carrying out the method. It is crucial that the cutting edge (11) machines only one machining section of the edge (20) per rotation of the cutting tool (1).

In a cutting insert 10 having a substantially pentagonal upper surface 11, a substantially pentagonal lower surface 12, and a side surface 13 between the upper surface and the lower surface, a flat cutting edge 14 is formed at each of the corners in the upper surface and the lower surface that intersect with the side surface; a first main cutting edge 15 and a second main cutting edge 16 are formed between the corners in correspondence with the flat cutting edges, an angle θ1 formed by the flat cutting edge and the first main cutting edge is in the range from 15° to 30°, and an angle θ2 formed by the flat cutting edge and the second main cutting edge is in the range from 40° to 50°.

A cutting insert (1) comprising: a basic body (3), comprising a first area (9), a second surface (11) which is arranged on one of the sides opposite the first surface (9), a first side surface (13) which is connected to the first surface (9) and the second surface (11), a second side surface (15) connected to the first surface (9), the second surface (11) and the first side surface (13), a first recess (17) which leads into the first surface (9), the first side surface (13) and the second side surface (15), and a second recess (19) which leads into the second surface (11), the first side surface (13) and the second side surface (15), a first part (5) with a triangular plate shape, which is arranged in the first recess (17) and has a first cutting edge (21) which is arranged at an intersection of two adjacent surfaces, and a second part (7) with a triangular plate shape, which is arranged in the second recess (19) and has a second cutting edge (23) which is arranged at an intersection of two adjacent surfaces, wherein the first recess (17) has a first floor surface (25) which is arranged away from the first surface (9), a first wall surface (27) which is arranged between the first floor surface (25) and the first surface (9), and a first valley line (29) which is located at an intersection of the first floor surface (25) and the first wall surface (27), the second recess (19) a second floor surface (31) which is arranged away from the second surface (11), a second wall surface (33) which is arranged between the second floor surface (31) and the second surface (11), and a second valley line (35) which is located at an intersection of the second floor surface (31) and the second wall surface (33), and where the first valley line (29) intersects the second valley line (35) in a perspective view onto the first surface (9).

The invention relates to a cutting tool and to a cutting insert for a chip removing tool. The cutting tool has a tool body with at least one recess (3), at least one cutting insert which is releasably secured to the recess, and a fastening device for securing the insert in the recess. The recess has a raised portion (20) with a flat upper support surface (22) to be received in a recess of the insert and supporting the insert by receiving a bottom surface of the recess bearing on the support surface (22). A protruding member (25) of the raised portion (20) has a limiting wall (29) designed to bear against a boundary wall of the recess of the insert to establish mutual contact with the boundary wall and to prevent rotation of the insert in the recess by receiving a rotational moment acting on the insert in an active chip removing state of the tool.

The invention relates to a milling insert (100) for mounting in a shoulder milling tool. The milling insert (100) comprises an upper rake surface (103), a bottom surface and a side surface (104). A cutting edge (106) is formed between the side surface (104) and the rake surface (103). The cutting edge (106) comprises a major cutting edge (107a, 107b), a corner radius cutting edge (108a, 108b), a surface wiping cutting edge (109a, 109b) and a ramping cutting edge (110a, 110b). Below the surface wiping cutting edge (109a, 109b), a lower secondary clearance surface has a wiper seating angle ηw and an upper primary clearance surface has a wiper overhang angle βw. The wiper overhang angle βw is equal to or larger than 70° and the wiper seating angle ηw is equal to or larger than the wiper overhang angle βw. The invention also relates to a milling tool provided with such inserts.

The invention relates to an 8-slice indexable insert (1) with a base body (4) having two plane-parallel side surfaces (5) and four circumferential surfaces (6), wherein a central bore (7) with a central axis (8) leads through the base body (4) from one of the side surfaces (5) to the other of the side surfaces (5), and wherein the base body (4) is approximately cuboid in shape, wherein the base body (4) is divided along the central axis (8) into a first cutting area (9) with the first side surface (5), a central contact area (10), and a second cutting area (11) with the second side surface (5), wherein the first cutting area (9) and the second cutting area (11) are each rotated about the central axis (8) by a defined angle relative to the contact area (10), and wherein the circumferential surfaces (6) are each divided into a first cutting surface (12), a contact surface (13), and a second cutting surface (14).such that the four contact surfaces (13) of the circumferential surfaces (6) form the contact area (10), the four first cutting surfaces (12) with the first side surface (5) form the first cutting area (9), and the four second cutting surfaces (14) with the second side surface (5) form the second cutting area (11), wherein each of the first and second cutting surfaces (12, 14) has a main cutting edge (15) and a face edge (16), wherein the respective main cutting edge (15) extends at the transition between a cutting surface (12, 14) and a side surface (5), and wherein the respective face edge (16) extends at the transition of the cutting surface (12, 14) to an adjacent cutting surface (12, 14), and wherein the main cutting edge (15) and the face edge (16) of each cutting surface (12, 14) merge into one another, and wherein the respective cutting surface (12, 14) The trough (18) extending from the face cutting edge (16) along the main cutting edge (15) has a groove for the removal and shaping of chips.

Provided is a cutting insert in which cutting edges in a plurality of sections can be used, and it is possible to keep chips, which are discharged from a cutting edge in a section that is being used, from damaging an unused cutting edge in an adjacent section. An edge where an upper surface and a peripheral side surface intersect is divided into a plurality of sections AB, BC, CD, and so on. In each of the plurality of section, the section AB, for example, includes one minor cutting edge and one major cutting edge that is longer than the minor cutting edge. The major cutting edge is inclined at an angle α to be away from a lower surface gradually while extending away from the minor cutting edge. A height position of the upper surface in an up-down direction in which the upper surface and the lower surface oppose each other does not change as the upper surface extends toward the attachment hole, or the height position decreases in a direction from the upper surface toward the lower surface.

The present invention refers to an indexable cutting insert (10) which is mounted in a rotating tool (E), the rotating tool (E) comprising a body (B) that rotates about a predetermined rotational axis (AX). The cutting insert (10) comprises an upper surface (10a), a lower surface (10b) and a peripheral side surface. The cutting insert (10) further comprises an inner cutting edge (10g) and a corner cutting edge (10f). A top part (S), which has the maximum distance from the lower surface (10b), is located on the corner cutting edge (10f).

The invention relates to the technical field of mechanical cutting machining, in particular to a long overhanging milling cutter with a vibration damping structure for deep cavity machining, which comprises a cutter handle section adaptively connected with a machining center spindle, the lower end of the cutter handle section is connected with a transition section through a vibration damping assembly, and a milling cutter section is mounted at the lower end of the transition section. By designing a triple vibration reduction structure of magnetic repulsive force, spring elasticity and damping friction, the vibration reduction effect is comprehensively improved, the chatter problem of the long overhanging milling cutter is solved, the machining stability is improved, the length-adjustable transition section is designed in a matched mode, and the vibration reduction effect of the long overhanging milling cutter is improved. The concentricity and the rigidity are optimized, meanwhile, the stability of structural connection and the adjusting precision are guaranteed, it is guaranteed that the cutter cannot move after being adjusted, the device is suitable for machining of deep cavities of different depths, the cutter replacing cost is reduced, and the machining efficiency is improved.

A plungeable cutting apparatus can include a cutting tool having at least one cutting insert. Each cutting insert can have a body sized and configured to define at least one cutting edge that is positioned for cutting into a work piece to define a recess, groove or other type of aperture. Some embodiments of the cutting apparatus can utilize an array of cutting inserts positioned along a distal periphery of a cutting tool of the cutting apparatus, for example. Each cutting insert can have a generally square configuration or other suitable shape. Some embodiments can be sized and shaped to help limit vibration during metalworking to help improve the life of the cutting insert and facilitate larger sized aperture formation via plungeable cutting operations that may also need less finishing work.

The present invention relates to an indexable cutting element (1, 30, 60) for a thread milling tool, comprising first and second main surfaces (2, 3) arranged opposite to each other and facing in opposite directions, and an outer peripheral surface (4) connecting the first and second main surfaces, wherein the outer peripheral surface comprises an even number of at least four outer peripheral sub-surfaces (5, 5', 6, 6', 7, 7') arranged in pairs opposite to each other on both sides of the cutting element and facing in opposite directions. For each pair of outer peripheral sub-surfaces, one sub-surface includes one or more thread teeth (9) having a rake face (15) facing a first direction (S1), and the other sub-surface includes one or more thread teeth (9) having a non-cutting surface (18, 19, 31, 32) and / or a rake face (15) facing a second direction (S2), the second direction (S2) being opposite to the first direction (S1).

In a cutting insert (10) having an upper surface portion (11) and a lower surface portion (12) each in a substantially pentagonal shape, and a side surface portion (13) between the upper surface portion and the lower surface portion, a finishing edge (14) is formed at each corner portion of the upper surface portion and the lower surface portion intersecting the side surface portion, and a first main cutting edge (15) and a second main cutting edge (16) are formed between the corner portions corresponding to the finishing edges, an angle θ1 formed by the finishing edge and the first main cutting edge is set to a range of 15° to 30°, and an angle θ2 formed by the finishing edge and the second main cutting edge is set to a range of 40° to 50°.

The invention relates to a tool body (1a) for a milling tool. The tool body (1a) including at least one pocket (5) for receiving a cutting insert. The pocket (5) comprises a bottom section (7) with a bottom support surface (8), a first side wall section (9) at a radial inner end (7d) of the bottom section (7) and a second side wall section (11) at an axial rear end (7b) of the bottom section (7). The first side wall section (9) comprises a radial support surface (10) extending in a first plane (P1) and the second wall surface (11) comprises an axial support surface (12) extending in a second plane (P2). In a plane extending in parallel with the bottom support surface (8), the first plane (P1) forms an angle a1 of 65-75° with the second plane (P2). The invention further relates to a milling tool comprising such a tool body.

A cutting tool including a toolholder and a round cutting insert for mounting on a pocket floor of the toolholder. The toolholder includes the toolholder pocket floor having a bore and a plurality of grooves in the pocket floor arranged radially about the bore, wherein adjacent grooves are radially offset by a groove offset angle, x. The round cutting insert includes an upper surface having a cutting edge, a lower surface opposite the upper surface, an exterior side surface between the upper surface and the lower surface, an interior side surface defining an aperture extending from the upper surface to the lower surface, and a plurality of lugs arranged radially about the aperture. In an alternate embodiment, the cutting tool includes an anti-rotation disc with a plurality of grooves instead of the toolholder pocket floor.

A double-sided cutting insert (1) for use in a helical milling cutter having a rectangular basic shape and four different working positions. The peripheral surface (10) extends around the cutting insert between two main surfaces (2, 3) and has two longer main surfaces (11, 12) and two shorter main surfaces (13, 14). Main cutting edges (31-34) are formed at the intersections between each longer main surface (11, 12) and each main surface (2, 3). Inclined chip guide surfaces (41-44) extend between each shorter main surface (13, 14) and each main surface (2, 3). Each chip guide surface intersects with the contact surfaces (5a, 5b) of adjacent main surfaces on both sides of the longitudinal center surface of the cutting insert. The present invention also relates to a helical milling cutter comprising a plurality of such cutting inserts.

The invention relates to a cutting tool (1) having an insert seat (4) and a cutting insert (7) detachably mounted therein. A clamping element (13) serves to secure the cutting insert in the insert seat (4) by asserting a force in a center of the cutting insert, with a first force component towards a bottom surface (5) of the insert seat and a second force component (L2) perpendicular to the bottom surface. The bottom surface of the insert seat (4) is provided with three protrusions (15a-15c) forming three precise contact points for a bottom surface (9) of the cutting insert (7). A first protrusion (15a) is located close to the active cutting edge (11), a second protrusion (15b) is located close to the second force component and a third protrusion (15c) is located such that the protrusions together form a triangular shape.

A double-sided cutting insert for use in milling, comprising: - first and second major faces (2, 3); - a peripheral surface (10) arranged between said major faces (2, 3) and comprising a first main side face (11); - a first main cutting edge (21) formed at an intersection between the first main side face and the first major face; - a second main cutting edge (22) formed at an intersection between the first main side face and the second major face; - first and second inclined side surfaces (31, 32), which are formed on the first main side face (11) and which are inclined towards each other to form a depression (D1) on the first main side face; and - a chip deflecting member (50), which is formed on the first main side face as a protrusion across said depression (D1) and which comprises a chip deflecting surface (51) configured to deflect chips that hit the first main side face away from the depression.

A cutting tool comprising a tool body (2) with at least one insert seat (10), an indexable first cutting insert with round basic shape and an indexable second cutting insert (30') with round basic shape releasably mountable, one at a time, in the insert seat. At least one rotation-preventing surface (20a, 20b) is provided in the insert seat (10) and configured to co-operate with planar indexing surfaces on the first cutting insert to prevent it from rotating in the insert seat. A rotation-preventing member (22) is releasably mountable in the insert seat (10) and configured to co-operate with indexing recesses (42) on the second cutting insert (30') to prevent it from rotating in the insert seat. The rotation-preventing member (22) is removable from the insert seat to allow the first cutting insert to be mounted in the insert seat without being obstructed by the rotation-preventing member.

The invention relates to a milling insert and a three-edge milling cutter. A milling insert for a three-edge milling cutter includes an upper side defining an upper extension plane, a lower side defining a lower extension plane, a central axis extending perpendicularly through the upper and lower extension planes, a side surface extending between the upper and lower sides about an outer periphery of the milling insert, the present invention relates to a cutting tool comprising an upper side having a side surface comprising a main radial clearance surface, two opposing axial clearance surfaces and two corner clearance surfaces, at least one cutting edge formed in a transition between the upper side and the side surface, each cutting edge comprising a main cutting edge extending above the main radial clearance surface and two corner cutting edges extending below the main radial clearance surface, two corner cutting edges extend over the corner clearance surface on opposite sides of the main cutting edge, where the main cutting edge is inclined downwardly toward a midpoint of the main cutting edge as seen in a side view, and the main cutting edge and the main radial clearance surface are inclined outwardly from the corner cutting edge toward the midpoint as seen in a top view.

A cutting device can have a cutting insert with at least one chip-breaking mechanism. A chip-breaking mechanism can include an elliptical ridge supported by an inner rib. The elliptical ridge can be positioned, for example, at a corner of a cutting insert body. The elliptical ridge can also be positioned adjacent to a conical cutting edge, and several grooves, including an outer groove and an inner groove with different radii, are spaced apart by a lip or step. Embodiments can also include a variable ridge positioned outwardly adjacent to an outer groove to facilitate chip breaking.

A front and back chamfering rotary milling cutter (20) includes a cutter body (22) including an insert pocket (30) and a star-shaped indexable cutting insert (32) releasably retained in the pocket (30). The cutting insert (32) has star-shaped upper and lower surfaces (42, 44) connected by a peripheral surface (46) intersecting each of the upper and lower surfaces (42, 44). The cutting insert (32) includes a plurality of circumferentially alternating inner and outer corner portions (50, 52). A cutting portion (54) is defined by each outer corner portion (50) together with an adjacent first inner corner portion (52a) rotationally forward thereof and an adjacent second inner corner portion (52b) located rotationally rearward thereof. Each cutting portion (54) includes a front chamfering cutting edge (58a) extending from the outer corner portion (50) to the first inner corner portion (52a) and a back chamfering cutting edge (58b) extending from the outer corner portion (50) to the second inner corner portion (52b).

A method for chamfering side edges (61, 62) of teeth of a cylindrical toothed workpiece (8) at an end face (9a) of the workpiece (8) by means of at least one milling tool (1), wherein the workpiece (8) and milling tool (1) are rotated with a predetermined relationship between the rotational speed of the milling tool and the rotational speed of the workpiece and such that the rotational axis of the milling tool is parallel to the central axis (4) of the workpiece, and the milling tool is moved along a predetermined path relative to the workpiece such that each of the side edges (61, 62) of this first end face (9a) of the workpiece (8) is chamfered in the machining direction from the root to the tip of the associated tooth.

A cutting insert comprises four rectangular upper surfaces extending between two opposing side surfaces, and cutting edge portions formed where the side surfaces and the upper surfaces are connected. The cutting edge portions comprise a second main cutting edge formed on the long sides of the upper surfaces and a first main cutting edge connected to the second main cutting edge. The side surfaces comprise a second main cutting edge clearance surface connected to the second main cutting edge and a first main cutting edge clearance surface connected to the first main cutting edge. An angle formed by an extension line of the first main cutting edge and an extension line of the side flat surface is greater than or equal to an angle formed by an extension line of a boundary line of the first main cutting edge clearance surface and an extension line of the side flat surface.

A cutting element, which is configured for the machining of a non-metallic composite material composed of a matrix and particles held together by the matrix, has a flank face, a rake face and a cutting edge which is coated with an edge coating and via which the flank face and the rake face are connected to one another, with which the non-metallic composite material can be machined in an improved fashion. The cutting edge within a cutting edge section thereof is curved in such a way that the cutting edge immediately beneath the edge coating in a section in a section plane that is perpendicular to the cutting edge has, at every point of the cutting edge section, a local radius of curvature which is greater than or equal to 10 μm and less than or equal to 80 μm.

A cutting insert (1) having a polygonal plate shape includes a rake face (2), a seating surface (3), a side surface (10, 10A, 10B), and a mounting hole (7) that is open to the rake face (2) and the seating surface (3) and that penetrates the cutting insert (1) in a thickness direction, in which a cutting edge portion (20) is provided on an intersecting ridgeline between the rake face (2) and the side surface (10, 10A, 10B), the cutting edge portion (20) includes a corner edge (24) and a main cutting edge (21) connected to the corner edge (24), the main cutting edge (21) is linear in both of a plan view in which the rake face (2) is viewed as a front and a side view in which the side surface (10B) is viewed as a front, the corner edge (24) includes a first arc edge connected to the main cutting edge (21) and an outermost peripheral arc edge located at an outermost peripheral portion in the corner edge, and the first arc edge and the outermost peripheral arc edge are arc-shaped cutting edges having different radii of curvature.

The invention relates to a cutting device (10), in particular a milling device, comprising a cutting unit (30) for cutting a workpiece, a receiving unit (20) for receiving the cutting unit (30) and a holding unit (40) for holding the cutting unit (30) on the receiving unit (20). It is proposed that the cutting device shall have a safety unit to secure the cutting unit (30) against, in particular unintentional, falling out of the cutting unit (30).

A minor cutting edge in a cutting insert of one aspect has a protruding curved shape protruding upward in a side view and includes: a first portion including an apex portion protruding most upward in the minor cutting edge; a second portion located between the first portion and a connection edge; and a third portion located between the second portion and the connection edge. Each of the second portion and the third portion comes close to a lower surface with distance from the first portion. In the side view, a radius of curvature of the second portion is larger than a radius of curvature of the first portion and a radius of curvature of the third portion.

A land preparation tool includes a cutting surface having a blade and a mounting interface opposite the cutting surface. The mounting interface of the land preparation tool is configured to detachably connect to a tool holder having a top surface, an end surface, a mounting surface opposite the end surface, and opposing first and second side surfaces extending between the end surface and the mounting surface. The mounting surface has an apex extending downwardly from the top surface and first and second mounting faces. The first mounting face extends inwardly from the first side surface toward the apex and the second mounting face extends inwardly from the second side surface toward the apex.