| US 7,476,062 B2 | ||
| Cutting insert with recessed corners | ||
| James M. Waggle, Derry, Pa. (US) | ||
| Assigned to Kennametal Inc., Latrobe, Pa. (US) | ||
| Filed on May 08, 2006, as Appl. No. 11/429,822. | ||
| Prior Publication US 2007/0258778 A1, Nov. 08, 2007 | ||
| Int. Cl. B23C 5/20 (2006.01) | ||
| U.S. Cl. 407—113 [407/42; 407/116] | 18 Claims |
| 1. A cutting insert having a body comprising:
a) a rake face;
b) a seating surface;
c) plurality of flank faces extending between the rake face and the seating surface, wherein the intersection of the rake
face and the plurality of flank faces defines a plurality of side cutting edges; and
d) wherein the rake face of the body has a plurality of corner regions formed at the intersection of side cutting edges to
define corner cutting edges, wherein the corner cutting edge in at least one corner region has a recessed profile when viewed
from a corner region of the insert body, wherein the rake face generally drops from the cutting edge to form a positive rake
angle, wherein the recessed profile has a concave shape and extends inwardly from the corner cutting edge into the rake face
of the insert body.
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