Chucks or sockets – Angularly adjustable or indexing
Patent
1992-04-16
1994-03-22
Eley, Timothy V.
Chucks or sockets
Angularly adjustable or indexing
279137, B23B 522, B23B 534
Patent
active
052957004
ABSTRACT:
A compliant workpiece support assembly for a microrobotic apparatus for aligning three workpieces and welding them into an assembled package, includes a lower support assembly having a ball and socket joint with a polymer ball seat cast around the ball. The ball has a radial bore containing a lower collet axially movable in the bore to grip one of the workpieces. The other two workpieces are held in telescoping arrangement, respectively in inner and outer collets of an upper support assembly, the collets being disposed coaxially one within the other and respectively having camming housings for opening and closing the collets. The outer collet housing supports the entire upper support assembly and is axially driven so that when the outer collet bottoms on the outer workpiece the continued movement of the outer housing closes the collet to grip the workpiece. The inner collet is closed over the inner workpiece by a pneumatic piston. When the upper support assembly is lowered over the lower support assembly to bring the workpieces together, the force drives the lower collet into the ball to close the collet over the lower workpiece. Pneumatic clamps are provided for locking the lower collet closed and for locking the ball against rotation. A pneumatic clamp floats on the upper support assembly to lock the outer collet closed. The inner collet assembly is movable axially relative to the outer collet assembly for axial adjustment of the positions of the two upper workpieces relative to each other.
REFERENCES:
patent: 2842370 (1958-07-01), Kuba
patent: 3594537 (1971-07-01), Morgengy
patent: 4854667 (1989-08-01), Ebata et al.
Crews Daniel F.
O'Brien Gregory R.
Stone Alan L.
Dukane Corporation
Eley Timothy V.
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