Cutting tool accessory

Details Cutting tool accessory Cutting tool accessory

1983-11-07

1986-04-08

Weidenfeld, Gil

Cutting by use of rotating axially moving tool

Plural tool-assemblages

Coaxial

10140, 408193, 408225, B23B 5108

Patent

active

045809330

ABSTRACT:
A twist drill is provided with a countersink and collar assembly. The countersink includes a body with a face which cooperates with a similar face of the collar to trap a pair of balls between them. The faces being conical, enable the balls to be driven radially inward into the drill flutes by tightening the collar onto the countersink. A chip deflector is provided at the cutting edges of the countersink.

REFERENCES:
patent: 2661642 (1953-12-01), Marcucci
patent: 3575520 (1971-04-01), Halpern
patent: 3635573 (1972-01-01), Halpern
patent: 3794438 (1974-02-01), Knutsson
patent: 3877099 (1975-04-01), Halpern
patent: 4032251 (1977-06-01), Ribich
patent: 4076443 (1978-02-01), Halpern

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