Cutter insert

摘要

A cutter insert of the indexable type comprises a plate of a generally quadrilateral shape including a front face, a rear face and four side faces. The cutter insert has two peripheral cutting edges defined by two opposite side faces and the front face. A pair of notches are formed in two diagonal corners of the cutter insert, and the other two diagonal corners are chamfered to provide respective corner faces which define together with the front face a pair of end cutting edges.