Patent ID: 7211178

Claim:
A fixture for electro-chemical machining of a cavity in a metallic component using a working electrode mounted on a power-actuated guide linkage constructed and arranged to perform a Z feed movement in an electrolyte, the metallic component acting as an anode, comprising: a guide body connected to the guide linkage, the guide body including a plurality of guide elements positioned on at least one side wall of the guide body, at least one actuator for laterally moving the guide elements in an XY plane such that the guide elements can rest against at least one inner wall of the cavity and effect movement of the guide body in the X and Y directions, a measuring device attached to the guide body to track parallel to the guide body, the measuring device measuring at least one wall thickness of the metallic component in a respective working zone, the actuator being controlled to move the guide elements in dependence on the at least one wall thickness of the metallic component.