Patent ID: 8613575

Claim:
An indexable cutting insert which is provided with at least two bearing surfaces for securing it to a holder, said bearing surface being each subdivided into individual subsurfaces, wherein the at least two bearing surfaces, with respect to a center plane of the cutting insert, each form at least three edges in one half of said cutting insert, said edges bounding the subsurfaces for the formation of crowning, approximating to convexity, of the at least two bearing surfaces, wherein the at least two bearing surfaces are each bounded by three respective edges in both halves, starting from the center plane, of the cutting insert, such that the at least two bearing surfaces of the cutting insert are each subdivided into five subsurfaces, and wherein the at least two bearing surfaces are identically formed and arranged such that one bearing surface is provided for resting against a mating surface within the seat and that the other bearing surface is provided for pressing of a clamping shoe of the holder.