Clamp apparatus used in hole machining device

Details Clamp apparatus used in hole machining device Clamp apparatus used in hole machining device

1992-11-05

1994-10-04

Watson, Robert C.

Work holders

With fluid means

Cylinder-piston means directly moves jaw

269152, 269329, B23Q 308

Patent

active

053519426

ABSTRACT:
A clamp apparatus used for machining a workpiece, such as a structural beam, includes a stationary clamp apparatus and a movable clamp apparatus. The stationary clamp apparatus clamps onto a first side or flange of the workpiece, and the movable clamp apparatus clamps onto another, generally opposite side of the workpiece. The movable clamp apparatus is capable of shifting position in the direction of the stationary clamp means. A pair of fastening mechanisms are positionably secured to the clamp apparatuses, for securing and positioning the workpiece with respect to the clamp apparatuses.

REFERENCES:
patent: 2826809 (1958-03-01), Lapastora
patent: 4664364 (1987-05-01), Lymburner
patent: 4738438 (1988-04-01), Horie et al.
patent: 4863150 (1989-09-01), Hodl et al.

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