Patent ID: 8408848

Claim:
A cutting insert ( 20 ), comprising: an upper surface ( 22 ) and an opposing base surface ( 24 ), with a peripheral side surface ( 26 ) extending therebetween; an insert axis (A 1 ) extending between the upper surface ( 22 ) and the base surface ( 24 ); a cutting edge ( 34 ) formed at the intersection of the peripheral side surface ( 26 ) and the upper surface ( 22 ); and at least one chip breaking element ( 36 ) formed on the upper surface ( 22 ), wherein: the upper surface ( 22 ) exhibits rotational asymmetry about the insert axis (A 1 ), and a chip deflection distance (D 1 ), measured radially between the cutting edge ( 34 ) and an outermost point of the at least one chip breaking element ( 36 ), increases in a rotational direction about the insert axis (A 1 ) for greater than 180°.