Patent ID: 7275896

Claim:
A grooving cutting insert ( 10 ) having an elongated form with a longitudinal axis (L) and comprising an elongated clamping portion ( 12 ) and at least one cutting portion ( 14 ), the at least one cutting portion ( 14 ) having a first width transverse (W 1 ) to the longitudinal axis (L), the clamping portion ( 12 ) having a second width (W 2 ) transverse to the longitudinal axis (L), the first width (W 1 ) being greater than the second width (W 2 ), the at least one cutting portion ( 14 ) having a chip rake surface ( 22 ) and a relief surface ( 24 ) meeting at an intersection, the relief surface ( 24 ) having a plurality of recesses ( 26 ) formed therein, the plurality of recesses ( 26 ) extending to and opening out to the chip rake surface ( 22 ), the relief surface ( 24 ) and the chip rake surface ( 22 ) intersect at a cutting edge ( 20 ), wherein in a top view of the cutting insert ( 10 ) the cutting edge ( 20 ) has the form of a serrated curved cutting edge ( 20 ) with recessed and non-recessed cutting edge portions ( 28 , 30 ).