Cutting insert for effective chip control
AssigneeKennametal Inc.
InventorJoseph J. Ley
Life of this patent
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Abstract
A cutting insert includes a polygonal body having an upper chip surface, a bottom surface and a peripheral edge surface extending therebetween. The peripheral edge surface intersects the upper chip surface to form a main cutting edge. The upper chip surface defines a chip face including a chip former comprising a wall extending downwardly from an elevated plateau to a cutting edge having a plurality of chip forming grooves and a rib formed between adjacent chip forming grooves. The chip former of the cutting insert effectively controls the formation of a chip by forming the chip to a desired shape and guiding the chip to an obstruction that impedes chip flow until the chip breaks.
Claims17
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 (R1) 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.
Dependencies are inferred from the claim text.