Patent ID: 8231311
Filing Date: 2012-07-31
Classification: B23C,Y10T

Abstract:
1. A cutting insert ( 22 ) having a polygonal prismatic shape with two opposing end surfaces ( 28 ) and a peripheral surface ( 34 ) extending therebetween, a median plane (M) is located between the end surfaces bisecting the cutting insert, the peripheral surface has a plurality of polygonal sides ( 48 ), each polygonal side has a side abutment surface ( 38 ) and merges with an adjacent polygonal side through a rounded corner ( 40 ), each rounded corner forms a vertex ( 42 ) of the polygonal shape, the cutting insert comprising: a through bore ( an insert tangential abutment surface ( a cutting region ( a primary cutting edge ( a secondary cutting edge ( the primary cutting edge ( a substantially straight first primary central portion ( a convex second primary portion ( the secondary cutting edge ( a substantially straight first secondary central portion ( a convex second secondary portion ( a concave third secondary portion ( the primary relief surface ( the secondary relief surface (