Abstract:
The present invention relates to a milling cutter for chip removing machining, said milling cutter comprising a milling cutter body (1) with a number of cutting insert seats in connection to a chip removing end of the milling cutter body (1), said milling cutter body (1) being formed to cooperate with a tool attachment at its opposite end in the axial direction (C-C), wherein indexable cutting inserts (3) are secured in the cutting insert seats, each said indexable cutting insert (3) having a top surface (7) and a bottom surface (9) substantially parallel with the top surface (7), wherein side surfaces (10A, 10B, 10C, 10D) extend between the top surface (7) and the bottom surface (9), said indexable cutting insert (3) having the basic shape of a truncated pyramid. The invention also relates to a milling cutter body (1) and an indexable cutting insert (3), per se. Distinguishing for the milling cutter according to the present invention is that each indexable cutting insert (3) has its top surface (7) facing against the chip removing end of the milling cutter, and that main cutting edges (11 A, 11 B, 11 C, 11 D) of the indexable cutting insert (3) extend from the top surface (7) of the indexable cutting insert (3) in direction towards the bottom surface (9) of the indexable cutting insert.
Abstract:
The present invention relates to a cutting insert for turning. The cutting insert (10) comprises a polygonal body of a hard, wear- resistant material, which has an upper surface (12) and a lower surface, and a plurality of edge surfaces (13, 14) uniting said surfaces. At least one rounded cutting corner (11), provided with a nose-cutting edge (19), is formed at a nose portion (21) at the area of the intersection area of two edge surfaces. Said cutting corner defines a bisector (B). At least one recess (29) is arranged in a support surface (16) of the upper surface (12) at a distance from the nose-cutting edge. Said recess (29) has a general extension toward said nose portion (21). Each recess (29) is elongate and has successively increasing depth toward the nose portion (21).
Abstract:
The present invention relates to a cutting insert for turning. The cutting insert (10) comprises a polygonal body of a hard, wear-resistant material, which has an upper surface (12) and a lower surface, and a plurality of edge surfaces (13,14) uniting said surfaces. At least one chip-breaker arrangement (22) is provided in at least one of the lower and upper surfaces. At least one rounded cutting corner (11 ), provided with a nose-cutting edge (19), is formed at a nose portion (21 ) at the area of the intersection area of two edge surfaces. Said cutting corner defines a bisector (B). The chip-breaker arrangement (22) comprises two elongate chip-breaker segments (22A.22B) having an opening (24) provided therebetween intended to give room for a cooling jet directed toward said opening (24).
Abstract:
A chromium-containing coated cemented tungsten carbide cutting insert (10, 32) that has a substrate (18, 34) and a coating (24, 30, 40, 46, 52). The substrate comprises between about 10.4 and about 12.7 weight percent cobalt, between about 0.2 and about 1.2 weight percent chromium.
Abstract:
A tool (10) which includes a substrate (20) which has a first surface and a second surface wherein the first (22) surface and the second surface (24) intersect to form an edge (26). An adhesion coating scheme is on the substrate. The adhesion coating scheme comprises an innermost layer (30) which contains titanium, and is on the surface of the substrate. The adhesion coating scheme includes an outermost adhesion layer (34). A wear coating scheme is on the adhesion coating scheme. The wear coating scheme includes one or more wear coating sequences wherein each wear coating sequence comprises an inner layer (36) including aluminum and nitrogen and an outer layer (38) including boron and nitrogen.