DEVICE FOR ORIENTING THE GUIDING HEAD OF AN ELECTRO-EROSION CUTTING MACHINE

摘要

A machine for the electro-erosion cutting of a part (1) by means of a wire-electrode (2) comprises a nozzle (3) mounted on a tray (29) which is laterally movable in order to give the required inclination to the wire when it runs through the machining area (9). That nozzle (3) is controlled in order to remain coaxial to the wire in the zone (9). This control is achieved by means of a ball joint (18) also mounted on the tray (29) and carried by a tube (17) which extends through a guide (32) being always in the image position of the lower guide (20) with respect to the symmetry plane (31). A mechanical link between the ball joints (18) and (19) ensures that the moves of ball joint (19) are always symmetrical to the moves of ball joint (18).