167results about "Milling cutting inserts" patented technology

Provided is a double-sided cutting insert for use in milling, the double-sided cutting insert comprising: a first major surface (2) and a second major surface (3); a peripheral surface (10) disposed between the major surfaces (2, 3) and including a first major side surface (11); a first main cutting edge (21) formed at an intersection between the first major side surface and the first major surface; a second main cutting edge (22) formed at an intersection between the first major side surface and the second major surface; first and second inclined side surfaces (31, 32) formed on the first major side surface (11) and inclined towards each other to form a depression (D1) on the first major side surface; and a chip deflector (50) formed on the first major side surface as a protrusion spanning the depression (D1) and including a chip deflection surface (51) configured to deflect chips impinging on the first major side surface away from the depression.

The cutting insert for use in high-feed milling is rotationally symmetrical by 180° about a central axis (C) and comprises: first and second main surfaces (2, 3); a median plane (MP) extending between the main surfaces perpendicular to the central axis; a first main cutting edge (31) and an associated first ramping cutting edge (51); and a second main cutting edge and an associated second ramping cutting edge. Each main cutting edge has a first end (31a) facing the associated ramping cutting edge and an opposite second end (31b). Each ramping cutting edge has a first end (51a) facing the associated main cutting edge and an opposite second end (51b). The cutting edges are inclined such that their second ends are located closer to the median plane (MP) than their first ends, and the second ends of the main cutting edges are located closer to the median plane than the second ends of the ramping edges.

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 first outer region of an outer inclined surface of a cutting insert according to an embodiment has a width in a direction perpendicular to a first part of a first edge that decreases with increasing distance from a first corner. A second outer region of the outer inclined surface has a width in a direction perpendicular to a second part of the first edge that increases with increasing distance from a first corner.

The present disclosure relates to a cutting insert specifically designed for right-angle milling having a threefold rotational symmetry, along with a complementary milling tool. The cutting insert presents novel features enhancing its efficiency and precision during milling operations. The milling tool is configured to accommodate and optimize the use of this cutting insert for right-angle milling purposes. Various uses and a manufacture method for the cutting insert is detailed.

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.

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.

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).

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).

This invention relates to the field of grinding mill cutter head manufacturing technology, specifically to a processing method for a grinding mill cutter head and a grinding mill cutter head itself. A processing method for a grinding mill cutter head includes the following steps: positioning the cutter head workpiece such that one unprocessed cutter group area on the end face to be processed of the workpiece faces the processing station; using a machining tool, a cutting tool is used to feed into the cutter group area at the corresponding processing station to process a set of equidistant and linearly extending V-shaped cutting grooves, such that the edges between adjacent V-shaped cutting grooves form a set of toothed cutting edges; wherein the end face to be processed of the cutter head workpiece is divided into several cutter group areas in the circumferential direction; after processing the current cutter group area, steps S1-S2 are repeated until all cutter group areas are processed; the V-shaped cutting grooves include through-cutting grooves and edge cutting grooves, which can effectively prevent the formation of annular grinding marks on the cutting surface after wear, thereby improving the service life of the cutter head.

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).

A double-sided cutting insert (1) for use in a spiral milling cutter having a rectangular basic shape and four different working positions. A peripheral surface (10) extends around the cutting insert between the two main faces (2, 3) and has two longer main side faces (11, 12) and two shorter main side faces (13, 14). A main cutting edge (31-34) is formed at the intersection between each longer main side face (11, 12) and each main face (2, 3). Inclined chip guiding surfaces (41-44) extend between each of the shorter main side faces (13, 14) and each of the main faces (2, 3). Each chip guiding surface intersects an abutment surface (5a, 5b) of an adjacent main face on both sides of a longitudinal center plane of the cutting insert. The invention also relates to a spiral milling cutter comprising a plurality of such cutting inserts.

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 rotary tool according to an unrestricted aspect of the present disclosure has a shank and a cutting blade. The cutting blade has: an upper surface having a first upper edge; a lower surface having a first lower edge; and side surfaces. The side surfaces have: a first side surface located on the front end side; a second side surface located on the outer peripheral side of the shank; and a third side surface located on the inner peripheral side of the shank. The first upper edge is a convex shape protruding toward the front end and has a first end. The first end is located closer to the third side surface than the second side surface. The first lower edge is a convex shape protruding toward the front end and has a second end. The second end is located closer to the second side surface than the third side surface. When observing the upper surface from the front view, the first side surface has a front end area sandwiched by the first end and the second end, and the front end area is recessed toward the rear end.

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.

A shouldering insert (1) having a top surface (2), a bottom surface (2a) and a peripheral surface (9) between the top surface (2) and the bottom surface (2a), characterized in that a top cutting region (200) is shaped by the peripheral surface (9) and the top surface (2) and in that a bottom cutting region (200a) is shaped by the peripheral surface (9) and the bottom surface (2a), wherein within the shouldering insert (1) the top cutting region (200) is indexable only with the bottom cutting region (200a).

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.

In a cutting tool rotatable about a tool axis, a reversible cutting insert is removably fixed to a tool body. The cutting insert has opposing upper and lower end faces interconnected by a peripheral surface and a median plane disposed between the upper and lower end faces. The peripheral surface includes four side faces alternated with four corner faces, and the side faces and corner faces intersect with the upper surface to form upper major cutting edges and upper corner cutting edges, respectively. Each side face has a median face and an upper major flank face. Each upper major flank face forms an acute internal upper major flank angle with the median plane, and the median plane intersects with the four median faces to define an imaginary median square. When viewed from the top of the cutting insert, the four upper major cutting edges define an imaginary upper major square that is rotationally offset from the imaginary median square.

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.

The application discloses a fall type high-precision milling comprehensive milling cutter, which comprises a cutter body, a peripheral edge and cutter teeth, the peripheral edge is arranged at the front section of the cutter body, and the cutter teeth are arranged at the front end of the peripheral edge, characterized in that: the edge of the cutter tooth tip part is provided with a first protection angle surface, a second protection angle surface and a third protection angle surface, the intersection end points of the first, second and third protection angle surfaces form an intersection angle tool tip, the front end face of the cutter tooth tip part is provided with a tool tip facet, and the tool tip facet and the intersection angle tool tip have a finishing height fall, so that the tool tip facet is subjected to fine grinding and finishing machining. Through the improvement of the structure of the cutter tooth tip part, the intersection angle tool tip and the tool tip facet with a slight height fall are formed, the milling cutter machining performance is improved, and the high-precision face milling machining can be performed on low-carbon steel, stainless steel and the like (soft steel with HRC less than 40 degrees).