Improvements in or relating to Electrical Connectors to a Workpiece to be machined Electrochemically or by Electro-erosion

摘要

1,181,641. Electro-erosion. ATELIERS DES CHARMILLES S.A. 8 April, 1968 [5 May, 1967], No. 16759/68. Heading B3V. [Also in Divisions C7 and H2] A device for supplying current to a workpiece to be machined electrochemically or by electroerosion has conducting members, e.g. rectangular or cylindrical rods 28, urged upwards within a support 11 into contact with the workpiece 12 by means of a flexible wall 29 and fluid pressure within a chamber 30. The rods 28 are clamped in position by means of a screw 33. The conducting members may be plates (Fig. 4) on metallic balls (Fig. 6) and may be urged upwards by a compressed rubber block (Fig. 2), one or more rubber tubes filled with compressed air (Figs. 3 and 4) or, in an electrochemical machining apparatus, by the pressure of electrolyte which also flows to the upper surface of the workpiece.