Patent ID: 7597510

Claim:
An indexable cutting insert including top and bottom surfaces intersected by clearance surfaces, comprising: first and second spaced-apart cutting edges; and first and second support surfaces for determining the spatial positions of the first and second cutting edges in relation to a tool, wherein the first support surface faces away from the first cutting edge and is machined so as to be spaced at a predetermined distance therefrom, and the second support surface faces away from the second cutting edge and is separately machined relative to the first support surface so as to be spaced from the second cutting edge at the predetermined distance wherein the first and second cutting edges being disposed on the top surface, the bottom surface of the insert being serrated and including a first set of spaced-apart grooves, and a second set of spaced-apart grooves, each groove of the first and second sets including flank surfaces which constitute the first and second support surfaces, and wherein each groove includes opposite ends, and each groove increases in depth from one end to the other end.