Throw away insert

Details Throw away insert Throw away insert

1990-10-11

1992-03-17

Kisliuk, Bruce M.

Cutters, for shaping

Including tool having plural alternatively usable cutting edges

With integral chip breaker, guide or deflector

407116, B26D 100

Patent

active

050963384

ABSTRACT:
A throw-away insert having straight cutting edges defined adjacent the periphery thereof, arcuately curved corner portions extending between adjacent ones of the cutting edges, and a rake face having a center land. In the rake face, chip breaker grooves are formed near the corner portions. Each breaker groove adjoins the center land along a line inclined with respect to one of the adjacent cutting edges and is inclined with respect to the direction of thickness of the insert. An ellipsoidal recess is formed in the bottom surface of each breaker groove across the boundary between the center land and the breaker groove. The ellipsoidal recesses have a major axis extending parallel to the borderline between the center land and the breaker groove.

REFERENCES:
patent: 3395434 (1968-08-01), Wirfelt
patent: 3487515 (1970-01-01), Contrucci
patent: 4065223 (1977-12-01), Nelson
patent: 4214847 (1980-07-01), Kraemer
patent: 4215957 (1980-08-01), Holma
patent: 4273480 (1981-06-01), Shirai
patent: 4335984 (1982-06-01), Zweekly
patent: 4880338 (1989-11-01), Stashko

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