11results about "Shaping cutters" patented technology

A replaceable-blade cutting insert 20 for corner milling cutters includes: a first surface 1 and a second surface 2; a third surface 3 and a fourth surface 4 connected to a first side edge and a second side edge thereof respectively; and a fifth surface 5 and a sixth surface 6 connected to a first edge and a second edge of the first surface and the second surface respectively. The first surface 1 is used as rake face, the third surface is used as an outer perimeter flank face, and the fifth surface is used as a forward flank face. A twisted surface 10 is disposed on a section of the third surface 3 to form a ridge line 7 that acts as a main cutting edge intersecting with the first surface 1 and interposed between the third surface 3 and the first surface. It would be preferable for the first surface 1 and the second surface 2 to be positioned with a height offset relative to each other so that at least one set of diagonal corners are projected.

The invention concerns a tool (10; 20) and a toolholder (30; 40) comprising coupling means that permit a quick and easy assembly or disassembly of the two elements and ensure, at the same time, a stable and safe fixing during the use of the tool itself.

The milling tool (100) has a shank portion and a head portion extending from the shank portion, an inner head surface of the head portion formed with a circumferentially extending head coolant obstruction formation (140) comprising a head ridge extending rearwardly from an adjacent head portion of the inner head surface, the adjacent head portion being located radially inwardly from the head ridge.

Provided is a cutting insert (1) capable of suppressing edge fracture when a work having high hardness is machined. A cutting insert (1) includes two end surfaces (10, 11) having a plurality of corner parts (24, 25, 26, 27) and opposed to each other, a peripheral side surface (12) extending between the two end surfaces, and a cutting edge (13) formed at an intersecting edge between at least one of the two end surfaces and the peripheral side surface. The cutting edge has at least a first corner edge (50), a second corner edge (51), a major cutting edge (52), and an end cutting edge (53). The end cutting edge has a circular-arc shape, which projects outward, as viewed from the side of the end surface. The end cutting edge has a width which is from 15% to 50% of the width of the cutting insert. The end cutting edge has an arc radius which is from 1 / 3 to 1 / 1 of the width of the cutting insert.

A whirling tool (21), in particular for cutting a thread, includes a body with cutting teeth integrally machined thereon (23; 47, 51). Inaccuracies caused by mounting cutting teeth on the tool are avoided thereby.

The present invention increases the durability of a base portion to set a cutting condition with a large feeding amount. A first end face of the base portion comprises, when seen from the tip-end side in a direction along a rotational axis: a first region positioned rearwardly in a rotational direction and radially outside with respect to a second rear face of a cutting portion; and a second region positioned rearwardly in the rotational direction with respect to a second front face of the cutting portion and radially inside of the first region. When a virtual plane including the second rear face is a reference surface, the first region includes a first portion in which the width of a region sandwiched between the reference surface and a first rear face of the base portion gradually increases radially outward, and the second region includes a second portion in which the width of a region sandwiched between the reference surface and the first rear face gradually increases radially inward.

A cutting insert (1) of an embodiment of the present invention includes an upper surface (2), a lower surface (3), a side surface (4) connected to each of the upper surface (2) and the lower surface (3), and an upper cutting edge (5) located at an intersection of the upper surface (2) and the side surface (4). The lower surface (3) includes a mount part having alternately three first top portions (311) spaced a distance a away from a central axis (S1) extending between the upper and lower surfaces (2, 3) and three second top portions (312) spaced a distance b away from the central axis (S1) in a bottom view. The mount part further has a concave part including at least the central axis (S1). The second top portions (312) are located closer to the upper surface (2) than the first top portions (311). A cutting tool (10) with the cutting insert (1), and a method of manufacturing a machined product by using the cutting tool (10) are also provided.

Cutting insert (10) for profile turning, in particular for wheel profile turning, comprising a top surface (12), a bottom surface (14) and side surfaces (16), wherein at the transition from the top surface (12) to the side surfaces (16) two cutting edges (22a, 22b) for machining a workpiece (48) and two further edges (18a, 18b) each with two ends (18a', 18a'', 18b', 18b'') are formed, wherein the two cutting edges (22a, 22b) are each formed as partial circles without interruption and have a full radius, wherein each of the two cutting edges (22a, 22b) covers an angular range of approximately 180°, so that a defined line contact results between each of the cutting edges (22a, 22b) and a workpiece (48) to be machined, which is independent of the relative position of the cutting insert (10) to the workpiece. workpiece (48) is wherein the cutting edges (22a, 22b) each extend from one end (18a', 18a'', 18b', 18b'') of one of the two edges (18a, 18b) to the opposite end (18a',18a'', 18b', 18b'') of the other of the two edges (18a, 18b), wherein the transition from the underside (14) to the side surfaces (16) is formed analogously to the transition from the top surface (12) to the side surfaces (16), so that the cutting insert (10) comprises four semicircular cutting edges (22a, 22b, 24a, 24b).

Cutting tool comprising a hard metal body (10) with a chip surface (14) and a flank surface (12) which intersects with the chip surface (14) to form a cutting edge (16), wherein the hard metal body (10) consists of: a tungsten carbide phase with a grain size distribution in the range of 1 µm to 12 µm; a co-binder phase in a proportion of 9 to 12 mass percent; a solid solution phase of carbides of zirconium and niobium (Zr,Nb)C; and cubic carbides in an amount ranging from 2% to 5% by volume; wherein the solid solution phase of (Zr,Nb)C is the only solid solution phase of the hard metal body (10); wherein niobium is present in a proportion of 0.8 to 1 mass percent and zirconium is present in a proportion of 0.5 to 0.7 mass percent in the hard metal body (10); where the cubic carbides consist of the carbides of the (Zr,Nb)C solid solution phase; wherein the hard metal body (10) has a coercive force (Hcs) in the range of 130 Oe to 150 Oe; wherein the hard metal body (10) has a hardness in the range of 1280 to 1380 HV30; wherein the hard metal body (10) has a density of 14.1 g / cm 3 up to 14.4 g / cm 3 has; wherein the hard metal body (10) does not comprise a binder-enriched zone; and wherein the hard metal body (10) has a mass ratio Nb / (Nb+Zr) ≥ 0.6 and wherein the hard metal body (10) has a multi-layer coating consisting of a TiCN layer adjacent to the hard metal body (10) followed by an outer layer of aluminum oxide (Al2O3), wherein the multi-layer coating was subjected to sandblasting after coating.

Cutting insert (100, 200, 300) with: an upper surface (110, 210, 310), a lower surface (120, 220, 320) and several side surfaces (130, 140, 150, 230, 240, 250) that connect the upper and lower surfaces (110, 210, 310, 120, 220, 320) and form an obtuse angle with the lower surface (120, 220, 320) and an acute angle with the upper surface (110, 210, 310), wherein the side surfaces (130, 140, 150, 230, 240, 250) have a first side surface (132, 142, 232, 242, 332, 342) and a second side surface (134, 144, 234', 234", 244', 244", 334, 344) which, viewed from above, form an obtuse angle with each other, wherein a main cutting edge (160, 170, 260, 270, 360, 370) is formed on a line of intersection between the first side surface (132, 142, 232, 242, 332, 342) and the upper surface (110, 210, 310), and wherein an inclined cutting edge (162, 172, 262, 272, 362, 372) only for plunge milling and a secondary cutting edge (164, 174, 264, 274, 364, 374) on a cutting line between the second side surface (134, 144, 234', 234", 244', 244", 334, 344) and the upper surface (110, 210, 310) are formed, characterized in that an obtuse angle formed by the second face (134, 144, 234', 234", 244', 244", 334, 344) with the lower face (120, 220, 320) is greater than the angle formed by the first face (132, 142, 232, 242, 332, 342) with the lower face (120, 220, 320), and the upper and lower surfaces (110, 120, 210, 220) are triangular in shape.

A hand-held power tool includes a machine housing, in which an electric drive motor is arranged that is paired with an output shaft for rotatably driving an insert tool, at least one battery pack, and a support device for guiding the machine housing on a workpiece. The support device has a support section, which has a foot plate for contacting the workpiece that includes a passage for the insert tool. The battery pack is arranged in a first machine section, the electric drive motor is arranged in a second machine section, and a handle for a user is arranged in a third machine section, at least in some sections. The three machine sections are arranged next to one another along a transverse axis, which is aligned at an angle to the output shaft of the drive motor.