Self-locking chuck

Details Self-locking chuck Self-locking chuck

B - Operations, Transporting

23

C

29/28

B23C 5/26 (2006.01) B23B 31/00 (2006.01) B23B 31/26 (2006.01)

Patent

CA 1082904

A B S T R A C T A tool holding assembly wherein a self-locking chuck or tool holder is releasably secured in a rotary spindle by a draw bar and collet type tool holder gripping means. The self-locking chuck is provided with a spring-biased, ball locking means that functions as a safety retainer means for holding the chuck or tool holder in the spindle in case of a breakage of the collet type tool holder gripping means. The spindle is pro- vided with a tapered seat against which the balls of the ball locking means are normally urged by a spring biased plunger that is movable to a ball unlocking position by the draw bar. -2-

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