SPANSKERANDE VERKTYG, SERSKILT FOR KOPIERSVARVAR

摘要

A ceramic, five-sided cutting plate is clamped in a recess of a toolholder in such a manner that two sides of the plate which constitute cutting edges and enclose an angle of 75 DEG are exposed, the other three sides being located in the recess. The two sides contiguously adjacent the cutting edges are backed by faces of the toolholder in the recess which jointly define an angle of 37 DEG . The fifth side of the plate which connects the last-mentioned two sides defines an airgap with the surface of the toolholder. Working stresses applied to the cutting plate in all normal turning operations tend to wedge the plate deeper into the recess of the toolholder, and thus do not cause displacement of the plate.