Cutter insert in holder has polygonal body with face and support surface joined by free surfaces, rounded cutting corner and two cutting edges and radii of curvature

摘要

The cutter insert has a polygonal main body with one face spaced apart from a support surface (21). The two faces are joined by free surfaces forming cutting edges. At least one rounded cutting corner (24) is formed by two cutting edges. The cutting corner has a middle part (25) with a first radius of curvature, adjoining two parts (26) with a second radius of curvature. At least one of the cutting edges is recessed over part spaced apart from the cutting corner center point defined by the cutting corner bisector.