343results about "Milling cutting inserts" patented technology

An end mill for metal cutting including a body, the body having a cutting section extending axially rearward from a front end. The cutting section includes a plurality of radially protruding and axially extending teeth. Each tooth has a front cutting edge, wherein the front cutting edge extends axially rearward and radially outward from an axially most forward point of the respective cutting edge. When the body is rotated, the cutting edge of each tooth forms a line of intersection in a central plane containing the central longitudinal axis. Each front cutting edge is interrupted by at least two chip splitting grooves, such that the line of intersection of the front cutting edge with the interrupting chip splitting grooves includes outer crests, each being located on an imaginary convex curve, at least two inner troughs, and curve parts, extending from one respective trough to one respective axially closest crest.

The present disclosure relates to a cutting tool system comprising a tool holder and a cutting tool. The tool holder includes a base for mounting onto a rotary drum or disc and a body for removably coupling to the cutting tool. The cutting tool is for size-reducing a material and has a first side and a second side. The cutting tool includes a plurality of cutting edges that are selectively moveable into and out of a cutting path of the rotary drum or disc. The first and second sides each have at least one cutting edge, such that each of the first and second sides are configured to be a leading side of the cutting tool during use. This allows the cutting tool to be rotated and / or reversed, such that a single cutting tool provides several cutting edges and increases the wear or erosion life thereof.

The invention relates to a master-slave multi-edge staggered tooth milling cutter structure with a reinforced shearing and cutting function. The milling cutter structure comprises a left-handed main cutting edge, a right-handed main cutting edge, a left-handed main chip groove, a right-handed main chip groove, left-handed micro teeth, a left-handed micro tooth slave edge, right-handed micro teeth, a right-handed micro tooth slave edge and other micro teeth. A micro-tooth slave edge is formed in a cutting edge strip of a traditional staggered-tooth cutter, and the micro-tooth slave edge and a main cutting edge alternately cut materials. When the cutter rotates, materials on the upper edge and the lower edge of a workpiece are sheared and cut in the strong constraint direction through the left rotating main cutting edge and the right rotating main cutting edge, a thermoplastic composite material with high toughness is extruded and deformed under the cutting action, and at the moment, a surface fiber back support is strengthened due to extrusion deformation. And the left-handed micro-tooth slave blade and the right-handed micro-tooth slave blade shear and remove the material which is not removed in the strong constraint direction again in a reciprocating and alternating manner, so that multiple times of reinforced shearing and cutting of the material are realized. The design is beneficial for removing materials in a surface layer weak constraint state, surface layer damage is inhibited, and low-damage milling of the thermoplastic composite material is realized.

A ball end mill includes an end mill body; a chip discharge groove, a first gash, and a bottom cutting edge. A second gash is formed at an interval from the bottom cutting edge on at least a first wall surface of the first gash. A minimum curvature radius in a cross section perpendicular to an axis of the second gash is larger than a minimum curvature radius in a cross section perpendicular to an axis of a groove bottom portion of the first gash.

A cutting insert includes a first and a second pair of opposing side surfaces. As seen towards a first side surface, a first axial relief face and a first axial abutment face form part of a first surface grouping on a first side of a longitudinal plane. As seen towards a second side surface, a second axial relief face and a second axial abutment face form part of a second surface grouping on the first side of the longitudinal plane. The first axial abutment face forms a substantially flat surface and extends perpendicularly to a median plane of the insert. The second axial abutment face forms a substantially flat surface and extends perpendicularly to the median plane. A second side surface of the first pair of opposing side surfaces has a first and a second radial abutment face.

A cutting insert has an upper surface, a lower surface and a lateral surface. The upper surface has a first upper side, and a second upper side. The lower surface has a first lower side and a second lower side. The lateral surface has a first lateral surface, a second lateral surface, and a third lateral surface. The first lateral surface has a first concave part having a first constraining surface having a flat shape. The second lateral surface has a second concave part having a second constraining surface having a flat shape. The third lateral surface has a convex part. The first concave part and the second concave part are separated from each other by the convex part.

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 invention relates to a cutting tool (1) with a mounting seat (3) with a bearing surface (4) and a seat surface (5) for receiving a cutting insert with a front surface (9) with at least one cutting edge (11) and an opposite rear surface (10) for bearing against the bearing surface, and a first mounting surface (12), which extends between said surfaces, for bearing against the seat surface, wherein a first recess (13) is formed in the first mounting surface; and an elevation (14) for positively locking engagement into the recess is formed on the mounting seat. The recess comprises a first end stop (15) and an opposite second end stop (16), and the elevation comprises a first end surface (17) and a second end surface (18) for bearing against the first end stop and the second end stop, wherein a length (19) of the recess between the end stops (15, 16) is greater than an extent (20) of the elevation (14) between the end surfaces (17, 18), with the result that the cutting insert (6) has a mechanical play (21) by means of the end stops (15, 16), with the result that the rear surface (10) can be pressed within the play (21) onto the bearing surface (4).

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.

The present invention relates to an indexable cutting insert (4) for a blade seat (3) of a tool body (2) of a shoulder milling cutter (1), the cutting insert (4) being generally defined by a triangular top surface (5), a triangular bottom surface (6), and three circumferential surfaces (7) extending between the top surface (5) and the bottom surface (6), wherein on each side of the cutting insert (4), a single one of the three circumferential surfaces extends along the edges of the triangular top surface (5) and the edges of the triangular bottom surface (6), the cutting insert (4) including three cutting corners (8), three main cutting edges (9), and three secondary cutting edges (10) at each of the top surface (5) and the bottom surface (6), wherein each cutting corner (8) connects a main cutting edge (9) and a secondary cutting edge (10), wherein each cutting corner of the cutting corners (8), each main cutting edge of the main cutting edges (9), and each secondary cutting edge of the secondary cutting edges (10) are provided at the intersection of the top surface (5) or the bottom surface (6) with one of the circumferential surfaces (7), and wherein each of the circumferential surfaces (7) includes a planar contact surface (15) defined by the main cutting edge (9) at the top surface (5) and the main cutting edge (9) at the bottom surface (6).

A cutting insert has two end surfaces and a side surface joined to the two end surfaces, and the cutting insert is formed in a substantially polygonal shape. The cutting insert comprises a cutting edge and a flank connected to the cutting edge on the side surface and having a negative clearance angle. The cutting edge has a major cutting edge, an inner cutting edge, and a corner cutting edge that is formed in a curved shape between the major cutting edge and the inner cutting edge. The flank has a first to third side surface parts that are connected to the major cutting edge, the inner cutting edge and the corner cutting edge, respectively. The length in the width direction of the third side surface part is largest at a first boundary between the third side surface part and the first side surface part and gradually decreases from the first boundary to at least an intermediate position toward a second boundary between the third side surface part and the second side surface part.

A cutting tool comprising a tool body (2) with at least one insert seat (10), and a double-sided tangential cutting insert (30) with four different working positions releasably mountable in said insert seat. A support member (15) with an auxiliary support surface (16) is formed in said insert seat (10), wherein the auxiliary support surface (16) is configured to face a mating surface on an end face of the cutting insert (30) that faces a tangential support surface (13a, 13b) in the insert seat when the cutting insert is mounted in the insert seat in any of its four working positions. The cutting insert (30) and said support member (15) are so adapted to each other that there is a play of 0.01-0.04 mm between the auxiliary support surface (16) and said mating surface when the cutting insert is mounted in the insert seat in any of its four working positions with the tool body (2) in a brand new condition.

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 double-ended parting cutting insert (22). The cutting insert includes two cutting portions (42) at opposite ends thereof which are oriented at 90° to each other. The cutting insert includes a pair of rake and support engagement grooves (48, 50), the rake and support engagement grooves of each one of the pair converging in a direction away from a respective cutting portion. An insert holder (24) includes a clamping portion (68) having a resilient upper clamping jaw having an upper engagement ridge and a lower base jaw having a lower engagement ridge. A gap therebetween forms an insert receiving slot that has a slot opening. The upper and lower engagement ridges converge in a direction away from the slot opening. When the cutting insert is releasably attached to the insert holder, to constitute a fastened position of a cutting tool, the cutting insert is located in the insert receiving slot and resiliently clamped therein.

A cutting insert may include a first surface, a second surface and a lateral surface. The first surface may have a polygonal shape and may include a first corner, a second corner, a third corner, a first side and a second side. The lateral surface may include a first lateral surface and a second lateral surface. At least a part of the first lateral surface may be located between the first side and the second surface. At least a part of the second lateral surface may be located between the second side and the second surface. The first lateral surface may be located further outside than the first side in a front view of the first surface. The first lateral surface may include a first region located closer to the second lateral surface as coming closer to the second surface.

The cutting insert includes an imaginary reference surface, an upper surface including an upper inclined surface extending at an angle upward from the imaginary reference surface, a lower surface including a lower inclined surface located below the upper surface and extending at an angle relative to the imaginary reference surface, and a plurality of side surfaces connecting the upper and lower surfaces. An insert bore is formed through the upper and lower surfaces along a central axis perpendicular to the imaginary reference surface. A major cutting edge is formed at an edge where the upper inclined surface meets one of the plurality of side surfaces. A first angle between the side surface on which the major cutting edge is formed and the upper inclined surface is greater than a second angle between the central axis and the lower inclined surface.

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).

Embodiments include superhard cutting elements and cutting tools including the cutting elements. In an embodiment, a cutting element includes a superhard table defining at least one cutting edge, a top surface at least partially defined by the superhard table, a bottom surface opposite the top surface, at least one lateral surface extending from or nearly from the top surface to or nearly to the bottom surface, and an opening extending from the top surface to the bottom surface that is spaced from the lateral surface. The opening is at least partially defined by at least one shaft surface extending from or nearly from the bottom surface and at least one tapered countersink surface extending from or nearly from the shaft surface. The tapered countersink surface exhibits a countersink angle measured between opposing portions of the at least one tapered countersink surface that is greater than about 45°.

A double-sided negative cutting insert for use in milling has a square basic shape and eight different working positions. The cutting insert (1) has a peripheral surface (10) extending around the cutting insert between first and second major surfaces (2, 3) and having four major side surfaces (11a-11d). One major cutting edge and one surface-wiping cutting edge are formed at the intersection between each major side surface and the first major surface (2) and the intersection between each major side surface and the second major surface (3). Each major side surface has a first lateral side surface (13), a central side surface (14), and a second lateral side surface (15) alternately arranged between two corner side surfaces (12). The central side surface (14) is located between the first and second lateral side surfaces (13, 15), and the central side surface is slightly recessed relative to the adjacent first and second lateral side surfaces.

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).

The present invention discloses a milling blade, which includes a blade body. The blade body includes an upper surface, a lower surface, and a plurality of side surfaces connecting the upper surface and the lower surface. The upper surface and the side surfaces form a cutting edge, and the cutting edge includes a main cutting edge, a circular arc tip edge, and a secondary cutting edge connected in sequence. A rake face of the main cutting edge is provided inside the main cutting edge, a rake face of the circular arc edge is provided inside the circular arc tip edge, and a rake face of the secondary cutting edge is provided inside the secondary cutting edge. The main cutting edge, the circular arc tip edge, and the secondary cutting edge are connected in sequence. The rake angle of the rake face of the main cutting edge gradually increases in a direction away from the rake face of the circular arc edge. The rake face of the circular arc edge is a concave-convex curved surface, and the rake angle of the rake face of the secondary cutting edge is constant. A milling cutter is also disclosed. The milling blade and the milling cutter have the advantages of improving the chip shape, avoiding the chip from scratching the surfaces of the blade and the workpiece, prolonging the service life of the blade, and improving the machining quality of the workpiece surface, etc.

A milling tool includes a main body and a plurality of cutting inserts with respective cutting edges. The main body has an end face and a barrel-shaped curved lateral face. A first group of the plurality of cutting inserts are fastened on the end face, a second group of the plurality of cutting inserts are fastened on the barrel-shaped curved lateral face, and the respective cutting edges describe a barrel shape. Each one of the plurality of cutting inserts may be designed as an indexable insert.

To provide a cutting insert that can improve a tool life.SOLUTION: A cutting insert includes a rake face, a flank face, and a cutting edge constituted of an edge line between the rake face and the flank face. The cutting edge has a first cutting edge part for corner processing, a second cutting edge part for drawing processing, a third cutting edge part for processing a finished surface, a first connecting / cutting edge part, and a second connecting / cutting edge part. The third cutting edge part is arranged between the first cutting edge part and the second cutting edge part. The first cutting edge part has a curve shape. A curvature radius of the first cutting edge part is 0.1 mm or more and 2.4 mm or less. The second cutting edge part has a linear shape or a curve shape whose curvature radius is 3 mm or more. The third cutting edge part has a linear shape or a curve shape whose curvature radius is 3 mm or more. The first connecting / cutting edge part and the second connecting / cutting edge part respectively have curve shapes.SELECTED DRAWING: Figure 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 rotary cutting tool (20) has an insert receiving pocket with a cutting insert (30) removably secured therein and an adjustment recess rearward thereof having a radially outward facing recess side surface and an adjustment tongue spaced apart therefrom by a first inner passage. The adjustment tongue (46) extends rearwardly from a tongue root to a tongue tip and includes a tongue through bore. The tongue root has a shoulder surface facing in the forward direction and the cutting insert is in contact with the shoulder surface. An adjustment screw (86) extends through the tongue through bore and engages the recess side surface, and rotation of the adjustment screw causes axial displacement of the cutting insert in a forward direction. An imaginary straight line in the first inner passage intersects a recess rear end surface formed on a first body sub-portion of the cutting body which is integrally formed with the adjustment tongue.