TANGENTIAL CUTTING INSERT AND MILLING CUTTER

摘要

A tangential cutting insert (10) having two identical opposing end surfaces (12) with two identical opposing major side surfaces (18) and two identical opposing minor side surfaces (16) extending between them. Each end surface h as a peripheral edge (40) containing cutting edges and four corners (24, 26) of which two are lowered and two are raised. Each end surface is provided with at least one projecting abutment member (28) having a projecting abutment surfa ce (30), wherein in a side view of either major side surface, the at least one projecting abutment surface is concave.