Cutting insert having a chip former

Details Cutting insert having a chip former Cutting insert having a chip former

1990-09-05

1991-12-31

Bishop, Steven C.

Cutters, for shaping

With chip breaker, guide or deflector

Comprising concave surface in cutting face of tool

407114, 407117, B23P 1530

Patent

active

050767399

ABSTRACT:
A metal cutting insert having an arcuately shaped cutting edge; a rake surface extending inwardly from the cutting edge and chip forming means located inwardly of said rake face; and comprising a pair of curved chip deflector surfaces sloping uniformly and smoothly away from said rake surface towards respective deflector surface peaks; the deflector surfaces being concavely curved in an axial direction and convexly curved in a lateral direction; a valley portion extending longitudinally and centrally between said deflector surfaces; the deflector surfaces sloping uniformly away from said side relief flanks towards said valley portion in a direction towards the bottom face so as to merge smoothly with said valley portion via smoothly curved corners; the lateral extent of each deflector surface diminishing uniformly from a maximum adjacent said rake surface to a minimum adjacent the respective surface peak.

REFERENCES:
patent: 4776733 (1988-10-01), Pettersson
patent: 4992008 (1991-02-01), Pano

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