Power drawfinger system for machine tool spindle

Details Power drawfinger system for machine tool spindle Power drawfinger system for machine tool spindle

1980-02-29

1981-12-01

Hinson, Harrison L.

Gear cutting, milling, or planing

Milling

Cutter spindle or spindle support

409134, 408239A, B23B 526, B23B 3110

Patent

active

043033601

ABSTRACT:
A power drawfinger system for selectively locking and releasing a toolholder or arbor in the socket of a power driven machine tool spindle. The system includes a collet device actuated by a power drawbolt using hydraulic means for expanding said device and a resilient member for contracting same to disengage or engage the toolholder. The collet device and drawbar mechanisms are constructed to be fail safe in event of breakage of the collet or loss of power.

REFERENCES:
patent: 2210088 (1940-08-01), Longfield
patent: 3461752 (1969-08-01), Kielas et al.
patent: 3466952 (1969-09-01), Greenberg et al.
patent: 3533316 (1970-10-01), Porath
patent: 3620586 (1971-11-01), Maastricht
patent: 3649051 (1972-03-01), Jones et al.
patent: 3975984 (1976-08-01), Simmons
patent: 4063488 (1977-12-01), Kagerer
patent: 4122755 (1978-12-01), Johnson et al.
patent: 4131054 (1978-12-01), Johnson et al.

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