Mechanical cam clamp

Details Mechanical cam clamp Mechanical cam clamp

1994-12-27

1996-03-26

Watson, Robert C.

Work holders

With fluid means

Plural positioning means sequentially operated

269 32, 269232, 269229, B23Q 308

Patent

active

055014356

ABSTRACT:
A cam clamp includes a swing clamp arm and multiple options for driving the clamp. The movement of a locking cam within a clamp header influences a central shaft having a clamp member attached thereto to rotate from a first rest position to a second clamping position, then causes the central shaft (with the clamp member mounted thereon) to move axially downwards to exert a clamping force. In a second embodiment, the rotational movement of a locking ring causes a central shaft, having a clamp member attached thereto, to rotate with it from a first rest position to a second clamping position. At the second position, the shaft is restrained from further rotation, but the locking ring continues as before. An appropriately inclined upper surface of the locking ring comes into sliding contact beneath the clamp member, causing the clamp member to pivot downwards with steadily increasing clamping force.

REFERENCES:
patent: 1940278 (1933-12-01), Walker
patent: 3336022 (1967-08-01), Tridgell
patent: 4225124 (1980-09-01), Pollak
patent: 4560152 (1985-12-01), Miller
patent: 4721293 (1988-01-01), Schron et al.
patent: 4830349 (1989-05-01), Miyata
patent: 5013015 (1991-05-01), Fatheree

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