Importance

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Abstract

A workpart to be the anode for electrochemical machining by a cathode tool is disposed on a shaft having a free end. An electrical coupling housing is disposed on the free end for movement thereon between electrical contact and non-contact positions. A stop extends axially from the free end of the shaft on a connector rod. A fluid actuated piston/cylinder assembly is disposed on the connector rod between the electrical coupling housing and stop. When the piston is actuated, it extends to abut the stop and, as a result of the reaction force, causes the cylinder housing to bias the coupling housing in the opposite direction from piston movement to the electrical contact position to effect electrical connection between the coupling housing and free end of the shaft. The workpart shaft includes a peripheral toothed portion driven by a pinion gear to index the shaft and workpart thereon. A caliper type clamp mechanism on the yoke member supporting the workpart shaft is disposed to clamp sides of the driven portion after the shaft and workpart are in indexed position for ECM'ing.

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First Claim