Collet release mechanism for milling machine

Details Collet release mechanism for milling machine Collet release mechanism for milling machine

1987-05-01

1988-06-14

Briggs, William R.

Gear cutting, milling, or planing

Milling

Cutter spindle or spindle support

408239R, B23C 526

Patent

active

047508507

ABSTRACT:
A collet attachment and release mechanism for a vertical milling machine includes a movable plate vertically supporting a pneumatic, hand-held, bidirectional, rotary impact wrench above the drive head of a drawbar. The movable plate is spring-biased to keep the socket of the impact wrench out of engagement with the drive head and is manually movable vertically along parallel guide posts by means of a handle. The handle is rotatable about one of the posts to actuate a pivotally mounted switch plate on the impact wrench for rotating the socket in a counter-clockwise or clockwise direction. The mechanism may also be used as a hammer to impart a sharp blow to the drive head to free a collet that sticks in the spindle.

REFERENCES:
patent: 3680437 (1972-08-01), Cravens
patent: 3898911 (1975-08-01), De Caussin
patent: 4382730 (1983-05-01), Reinisch
patent: 4511295 (1985-04-01), Razdobreev

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