Clamping device

Details Clamping device Clamping device

2006-01-24

2006-01-24

Wilson, Lee D. (Department: 3723)

Work holders

Work-underlying support

Support mounting means

C269S310000

Reexamination Certificate

active

06988720

ABSTRACT:
A clamping device2is provided with a hydraulic cylinder7for biasing a collet member5upward via a collet supporting member6and driving a pull rod4downward. A piston member30has a greater pressure receiving area than the collet supporting member6in the circular hydraulic chamber31of the hydraulic cylinder7. Therefore, the hydraulic cylinder7can drive the pull rod4downward while the collet member5is biased upward. Meanwhile, the collet5aof the collet member5is resiliently deformed in a diametrically expanding manner to engage in the vertical bore1bof a workpiece1while slightly moving downward, ensuring a secure locking of the workpiece1to a workpiece receiving surface3a.

REFERENCES:
patent: 6095509 (2000-08-01), Yonezawa
patent: 6598713 (2003-07-01), Kawakami
patent: 6755409 (2004-06-01), Yonezawa
patent: 2004/0188908 (2004-09-01), Kitaura
patent: 2004/0256779 (2004-12-01), Kawakami
patent: 2005/0121846 (2005-06-01), Kawakami
patent: 11-188551 (1999-07-01), None

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