Patent Number: 6,294,749

Title: Wire electrical discharge machine

Abstract: A wire electrical discharge machine including a wire electrode for processing a workpiece while causing electrical discharge to take place with a working fluid interposed between the wire electrode and the workpiece, and an upper wire guide and a lower wire guide through which the wire electrode is passed and which have therein channels for the working fluid to flow therethrough, including: a working fluid nozzle fixed to a guide body portion and adapted to jet and supply the working fluid toward the workpiece; an electric supply die provided in the working fluid nozzle to energize the wire electrode by coming into contact therewith; a recessed portion for engagement with the wire electrode being provided in a surface of the electric supply die along a moving direction of the wire electrode; and a plurality of jetting ports for jetting the working fluid toward the wire electrode so as to press the wire electrode against the electric supply die.

Inventors: Moro; Toshio (Tokyo, JP), Satou; Seiji (Tokyo, JP)

Assignee: Mitsubishi Denki Kabushiki Kaisha

International Classification: B23H 7/10 (20060101); B23H 7/08 (20060101); B23H 007/10 ()

Expiration Date: 09/25/2018