DEVICE FOR ELECTRO-EROSIVE PERFORATION OF PARTS

摘要

A device for electro-erosive perforation of parts comprising an electrode-instrument in the form of a rod (5) placed with a gap in an envelope (9) and protruding from it an arrangement (1) for feeding and rotating the rod mechanically connected to an arrangement (3) for ensuring the reciprocating movement of the envelope in relation to the rod. The arrangement (3) for reciprocating movement of the envelope in relation to the rod consists of a hydraulic cylinder (6), on the piston (7) of which, on the side where the part (8) is located, is rigidly fixed the envelope (9) and at least one of the cavities ("a" or "b") of the hydraulic cylinder (6) is connected to the system for the inlet and outlet of the working medium, the piston (7) being provided with at least one passage which is connected to the cavity of the envelope (9) of the electrode-instrument and through which passes, with a gap, the rod (5) of the electrode-instrument.