Work holders – With fluid means – Cylinder-piston means in series with additional positioning...
Patent
1980-06-12
1981-11-03
Watson, Robert C.
Work holders
With fluid means
Cylinder-piston means in series with additional positioning...
269304, 269305, 269320, 269900, B23B 3116
Patent
active
042981956
ABSTRACT:
A quick set hydraulically actuated clamping table assembly including a base supporting at least one pair of companion flat horizontal platens movable toward and away from each other having apertures for variably fixing jaw pieces thereon for holding workpieces thereon of various shapes. A pair of laterally adjacent elongated slide plates are located beneath and fixed respectively to the platens for sliding guided contact with the base and have shaped cam follower recesses in adjacent confronting edges receiving a pair of semi-cylindrical bearing segment members and a pair of shaped bearings abutting flat faces of the segment members. Resiliently biased concave face bearing blocks provide bearing faces against which the convex faces of the segment members work providing a centralizing mechanism correlating movement of the slide plates to equal and opposite movement, and hydraulic piston devices at the opposite ends of the slide plates oppositely move the slide plates in directions to carry the platens through said approaching and withdrawing strokes to clamp and release the workpiece.
REFERENCES:
patent: 3608886 (1971-09-01), Greene
patent: 4157819 (1979-06-01), Meyer
patent: 4174847 (1979-11-01), Wiesler
patent: 4222577 (1980-09-01), Giffin
patent: 4258928 (1981-03-01), Wiesler
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