US 7,320,564 B2
Cutting insert for grooving operations
Uzi Gati, Karmiel (Israel)
Assigned to Iscar Ltd., Tefen (Israel)
Filed on Oct. 18, 2004, as Appl. No. 10/965,724.
Claims priority of application No. 159188 (IL), filed on Dec. 04, 2003.
Prior Publication US 2005/0123367 A1, Jun. 09, 2005
Int. Cl. B23B 27/22 (2006.01)
U.S. Cl. 407—114  [407/115; 407/117] 16 Claims
OG exemplary drawing
 
1. A grooving cutting insert comprising:
a clamping portion and at least one cutting portion, top and bottom opposing surfaces and a peripheral side surface extending therebetween,
the top and peripheral side surfaces meeting at an upper edge at least a portion of which comprises a cutting edge, the cutting edge comprising a forward main cutting edge and two opposing side cutting edges,
in a top view of the insert, the two opposing side cutting edges increase in separation as they extend rearwardly from the main cutting edge to the clamping portion on opposing sides of a longitudinal axis of the cutting insert,
at least a portion of each side cutting edge having a variable rake angle.