Chucks or sockets – With fluid-pressure actuator – Socket type
Patent
1976-02-27
1977-09-06
Husar, Francis S.
Chucks or sockets
With fluid-pressure actuator
Socket type
279 1SJ, 279 51, B23B 3120
Patent
active
040463907
ABSTRACT:
An emergency chucking assembly is provided with a dead stop feature which prevents drawback when closing the collet. The assembly does not require a special collet to achieve the dead stop feature and can be used on any conventional collet, such as a one inch 5C collet. This is achieved by providing a spring biased mounting which forces the front face of the collet against and into an annular recess in the rear face of the enlarged chuck, so that when the drawtube is activated and the collet closed, the step chuck cannot move with the collet. The moving collet forces the jaws of the chuck to collapse around the workpiece held. The invention includes the utilization of an elastomer plug inserted at the juncture of the slots in the chuck body, which plug extends axially from the rear ends of the radial slots forward to the point of deepest machining of the chuck body to receive the workpiece. The plug improves the spring temper effect to the assembly.
REFERENCES:
patent: 1125780 (1915-01-01), Waite
patent: 2346706 (1944-04-01), Stoner
patent: 2994539 (1961-08-01), Farnsworth
patent: 3188101 (1965-06-01), Westberg
patent: 3385607 (1968-05-01), Hughes
patent: 3411796 (1968-11-01), Decker
patent: 3539193 (1970-11-01), Parsons
patent: 3687468 (1972-08-01), Skahen
patent: 3691900 (1972-09-01), Novak et al.
patent: 3779566 (1973-12-01), Tarbox et al.
Briggs William R.
Husar Francis S.
The Dunham Tool Company, Inc.
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