Abstract: A double-sided tangential cutting insert includes two identical opposing end surfaces and a peripheral side surface extending between the end surfaces. The peripheral side surface has two opposing identical major side surfaces, two opposing identical minor side surfaces and four corner surfaces. Each of the end surfaces include two spaced major cutting edges formed at an intersection between the end surface and one of the major side surfaces, two spaced minor cutting edges formed at an intersection between the end surface and one of the minor side surfaces, two diagonally opposite raised corners, each with a corner cutting edge, two diagonally opposite lowered corners, each having a corner non-cutting edge, major rake surfaces adjacent the major cutting edges, minor rake surfaces adjacent the minor cutting edges, cutting corner rake surfaces adjacent the corner cutting edges, and non-cutting corner rake surfaces adjacent the non-cutting edges.

Abstract: An indexable cutting insert for chip removal machining, the insert having a polygonal body having opposed lower and upper faces that are mutually interconnected by peripheral faces meeting at rounded corners, which are formed symmetrically with respect to upper face bisectors. The upper face includes a mid portion, which is positioned inside of a chip face. Intersections of the chip face and the peripheral face forming major cutting edges and corner cutting edges. The chip face comprises a row of protrusions. A pair of oblong corner protrusions are provided at each corner area of the chip face. The pair is located symmetrically with respect to an associated bisector of the upper face. Each oblong corner protrusion has a longitudinal axis and at least two peak areas. The peak areas are positioned in line, essentially on the longitudinal axis of each oblong corner protrusion.

Abstract: An indexable cutting insert for chip removal machining, the insert having a polygonal body having opposed lower and upper faces that are mutually interconnected by peripheral faces meeting at rounded corners, which are formed symmetrically with respect to upper face bisectors. The upper face includes a mid portion, which is positioned inside of a chip face. Intersections of the chip face and the peripheral face forming major cutting edges and corner cutting edges. The chip face comprises a row of protrusions. A pair of oblong corner protrusions are provided at each corner area of the chip face. The pair is located symmetrically with respect to an associated bisector of the upper face. Each oblong corner protrusion has a longitudinal axis and at least two peak areas. The peak areas are positioned in line, essentially on the longitudinal axis of each oblong corner protrusion.