Chuck closing mechanism for automatic screw machine

Details Chuck closing mechanism for automatic screw machine Chuck closing mechanism for automatic screw machine

1987-12-30

1989-01-24

Weidenfeld, Gil

Chucks or sockets

Socket type

Spring biased jaws

279 43, 279 57, B23B 3120

Patent

active

047996960

ABSTRACT:
A pair of spindles are journaled coaxially one within the other in the indexing head of an automatic screw machine, and with the outer spindle disposed to be reciprocated axially between first and second limit positions in which it opens and closes, respectively, a collet which is supported by the inner spindle in the bore of the outer spindle. The outer spindle is urged axially to a collet closing position by a compression spring; and a camming element is rotatably adjustable about the outer spindle between a first position in which it urges the outer spindle axially rearwardly against the resistance of the spring to open the collet, and a second position in which it permits the spring to return the outer spindle to a collet closing position. The spring tension is adjustable by another element which is threaded on the outer spindle.

REFERENCES:
patent: 2401071 (1946-05-01), Hillberg
patent: 2655826 (1953-10-01), Goldsby
patent: 3055671 (1962-09-01), Lewis et al.

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