The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 04, 2018
Filed:
Apr. 23, 2015
Mitsubishi Electric Corporation, Tokyo, JP;
Takayuki Nakagawa, Tokyo, JP;
Tomoaki Takada, Tokyo, JP;
Mitsubishi Electric Corporation, Chiyoda-ku, Tokyo, JP;
Abstract
A wire electrical discharge apparatus includes a wire bobbin on which a wire electrode is wound, a straightening treatment unit to perform straightening treatment on the wire electrode fed from the wire bobbin, a machining power supply to apply a voltage between the wire electrode and a workpiece via a feed terminal set above the workpiece and contacting the wire electrode, and a control unit to control the straightening treatment unit and the machining power supply so as to apply a voltage between the workpiece and the wire electrode that has been subjected to the straightening treatment, to perform electrical discharge machining to form an initial hole in the workpiece.