Schneideinsatz.

摘要

The present invention relates to a cutting insert (10) for chip forming machining, said cutting insert (10) including at least one cutting edge (16) created by the transition between an upper face (11) and an edge face (13) of the cutting insert (10), said upper face (11) being a rake face and said edge face (13) being a clearance face. In tools for metal cutting having indexable cutting inserts of hard and wear resistant material the cutting edges are subjected to wear and sometimes part of or the entire cutting edge collapses. In order to avoid damage to the tool body it is usual that the cutting insert rests on a shim of cemented carbide. The idea of the present invention is to present a cutting insert having an integrated shim, the transition between the cutting insert (10) and the integrated shim being defined by a step (18). By such an arrangement the total amount of cemented carbide of the cutting insert and the shim is reduced. Also said step constitutes an indication of fracture and thereby the fracture of the cutting edge is better controlled.