Patent ID: 7278805
Filing Date: 2007-10-09
Classification: B23B,Y10T

Abstract:
1. A cutting insert for effective chip control, comprising: a polygonal body having an upper chip surface, a bottom surface and peripheral edge surfaces extending therebetween, the peripheral edge surfaces intersecting the upper chip surface to form main cutting edges therewith, the upper chip surface defining a chip face including a chip former, the chip former comprising a wall extending downwardly from an elevated plateau to one of the peripheral edge surfaces defining a radius (R 1 ) therebetween, the downwardly-extending wall having a plurality of chip forming grooves and a rib formed between each groove, each groove extending from the elevated plateau toward but not extending entirely to one of the peripheral edge surfaces, each groove including a bottom wall, a first side wall and a second side wall, wherein the rib is formed by the second side wall of one groove and the first side wall of an adjacent groove, and wherein a top surface of the rib is approximately equal in elevation to the downwardly-extending wall.