Heavy duty insert

Details Heavy duty insert Heavy duty insert

1978-09-26

1980-07-29

Vlachos, Leonidas

Cutters, for shaping

Including tool having plural alternatively usable cutting edges

With integral chip breaker, guide or deflector

B26D 112

Patent

active

042148464

ABSTRACT:
A heavy duty insert for severe machining operations having a generally rectangular body with upstanding walls and rounded corners having a cutting edge extending around the periphery thereof and an upstanding mesa inboard of the cutting edge. To provide improved machining life the cutting edge in cross-section has an arcuate surface with a small radius merging from the walls of the body into an inclined face which is intersected inwardly of the walls by a flat land extending transversely to the walls. The maximum cutting speed and in-feed rate for machining is significantly increased by a groove interposed between the mesa and a cutting edge adjacent each side wall and having a first portion extending inwardly of and downwardly below the land of the cutting edge and a second portion defining in cooperation with a side wall of the mesa a surface extending inwardly of and upwardly above the land of the cutting edge.

REFERENCES:
patent: 3137917 (1964-06-01), Dowd
patent: 3187406 (1965-06-01), Franko
patent: 3395434 (1968-08-01), Wirfelt
patent: 3882580 (1975-05-01), Lundgren
patent: 3911543 (1975-10-01), Sorice
patent: 4116576 (1978-09-01), Gawryk, Sr.
patent: 4124326 (1978-11-01), Cost

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