Patent ID: 7118312

Claim:
A double-sided indexable cutting insert for chip removing machining; the insert comprising a negative, generally polygonal body having a plurality of corners; the body having a top side and a bottom side interconnected by an edge surface; a plurality of upper major cutting edges formed at a transition between the top side and the edge surface; a plurality of lower major cutting edges formed at a transition between the bottom side and the edge surface; adjacently situated major cutting edges at each of the top and bottom sides being interconnected by corner cutting edges disposed along respective corners of the insert; each corner cutting edge comprising a minor cutting edge and a nose cutting edge; the nose cutting edge extending to the respective minor cutting edge from a respective major cutting edge; a bisector of each corner cutting edge intersecting the nose cutting edge; each corner cutting edge being asymmetrical with respect to its respective bisector; the nose cutting edge of each corner cutting edge defined by a first radius, and the respective minor cutting edge defined by a second radius longer than the first radius; the nose cutting edges of the top side at least touching a common top plane; the nose cutting edges of the bottom side at least touching a common bottom plane oriented parallel to the top plane; wherein an imaginary line which extends perpendicular to the top and bottom planes and which intersects the minor cutting edge of any cutting corner at a location in-between opposite ends of such minor cutting edge, passes through the body.