B - Operations – Transporting – 23 – Q
Patent
B - Operations, Transporting
23
Q
29/12, 269/32
B23Q 17/00 (2006.01) B23B 3/16 (2006.01) B23B 7/04 (2006.01) B23B 29/24 (2006.01) B23Q 16/10 (2006.01)
Patent
CA 1159638
Abstract of the Disclosure A precision rotary indexing fixture is disclosed of the type including a top plate adapted to have work pieces mounted thereon with the work plate indexed to any of a plurality of precision rotary positions. The precision locking of the top plate is achieved by a serrated coupling rings, one mounted on the outer periphery of the top plate, the other mating ring mounted on a base structure. The top plate is locked in various index posi- tions by the application of disc spring sets acting on the top plate through an annular piston and a set of bearing elements mounted in opposed grooves in the piston and a race ring mounted to the top plate. The fluid forces acting on the piston acts to release the locking pressure exerted by the disc spring sets and release the coupling serration engagement during indexing of the top plate. The annular piston and disc spring sets act on the top plate in a position closely adjacent to the coupling ring radial location to minimize bending deflection of the top plate upon the applica- tion of locking forces by the disc spring sets. The use of a disc spring set to carry out locking of the top plate provides a fail safe feature to lock the top plate in the event of a power failure or other malfunction causing loss of hydraulic or pneumatic actuating pressure.
376090
Gage (davis A.g.) And Engineering Co.
Marks & Clerk
LandOfFree
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