Patent ID: 7275895

Claim:
In combination with a support movable in a predetermined direction, a cutting insert having a body secured to the support and formed with: a front face lying generally in a plane generally parallel to the direction; an arcuate edge face having an inner end merging with the front face, an outer end, and defining between the inner and outer ends an arcuate cutting edge; a side face directed forward in the direction and defining an outer cutting edge extending transversely of the front face from the outer end of the arcuate cutting edge, the outer cutting edge having a concave portion merging at the outer end with the arcuate cutting edge and a straight outer portion extending outward away from the concave portion; a planar side face extending transversely inward away from the front face along the outer cutting edge; and a flank extending between the planar side face and the straight outer portion of the outer cutting edge and acting as a chip-conducting step for chips produced by the straight outer portion.