Long-stroke high-force chuck

Details Long-stroke high-force chuck Long-stroke high-force chuck

1985-09-06

1987-05-26

Desmond, Eugene F.

Chucks or sockets

Radially reciprocating jaws

Lever actuated

279110, 279119, 279121, 279 1C, B23B 3116, B23B 3126

Patent

active

046679707

ABSTRACT:
Chuck provides for each jaw an action bar extending substantially longitudinally of the chuck axis and rockable in an action plane radiating from the chuck axis and intersecting the jaw, and a pair of first and second slides for each action bar, with said slides being guided for movement in the associated action plane in opposite directions normal to the chuck axis, with the first slide pivotally supporting the bar intermediate its ends about an axis normal to the action plane, the second slide having with one end of the bar a floating pivot connection with its pivot axis extending normal to the action plane, and the other end of the bar having with the jaw a floating pivot connection with its pivot axis extending normal to the action plane, so that on moving the first slide relative to the other slide in opposite directions the bar is rocked about its floating pivot connection with the second slide as a fulcrum for opening and closing the jaw, and on moving the second slide relative to the first slide in opposite directions the bar is rocked about its pivot support on the first slide as a fulcrum to increase the pressure of the closed jaw on work to gripping magnitude and decrease the jaw pressure on the work below gripping magnitude. The chuck further provides actuators for programmed cyclic movements of all pairs of slides to close all jaws on work and then apply the jaw grip to the work, then relinquish the jaw grip and retract the jaws from the work.

REFERENCES:
patent: 2722427 (1955-11-01), Labeyrie
patent: 2852265 (1958-09-01), Van Dinen
patent: 4009888 (1977-03-01), Wallace

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