Patent ID: 7234900

Claim:
A milling cutting insert ( 10 ) comprising: a pair of opposing end surfaces ( 12 ), a pair of opposing minor surfaces ( 14 ) and a pair of opposing major surfaces ( 16 ); each end surface ( 12 ) and major surface ( 16 ) intersect at a major edge ( 20 ), at least a portion of which forms a major cutting edge ( 30 ); and each end surface ( 12 ) and minor surface ( 14 ) intersect at a minor edge ( 32 ), at least a first portion of which forms a minor cutting edge ( 36 ) and at least a second portion of which forms a rear cutting edge ( 44 ); wherein: each rear cutting edge ( 44 ) merges with and is transverse to an adjacent minor cutting edge ( 36 ); each rear cutting edge ( 44 ) has a rear relief face ( 48 ) that extends towards an opposite end surface ( 12 ); each rear cutting edge ( 44 ) has a rear rake face ( 50 ) that extends along the associated end surface ( 12 ); and in a top view of the cutting insert ( 10 ), one rear cutting edge ( 44 ) of each end surface ( 12 ) is not obscured by any part of the cutting insert ( 10 ).