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:
Apr. 19, 2011
Filed:
Oct. 24, 2006
Yasuo Onodera, Tokyo, JP;
Tatsushi Sato, Tokyo, JP;
Yoshikazu Ukai, Tokyo, JP;
Takashi Hashimoto, Tokyo, JP;
Koichiro Hattori, Tokyo, JP;
Hisashi Yamada, Tokyo, JP;
Yasuo Onodera, Tokyo, JP;
Tatsushi Sato, Tokyo, JP;
Yoshikazu Ukai, Tokyo, JP;
Takashi Hashimoto, Tokyo, JP;
Koichiro Hattori, Tokyo, JP;
Hisashi Yamada, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A wire-discharge machining apparatus controls a short circuit between a wire electrode and a workpiece and wire-breakage, and makes it easy to improve productivity, by performing power supply control to mix an upper-side power supply state in which a high-frequency pulse voltage is applied from an upper-side power supplying unit, a lower-side power supply state in which the high-frequency pulse voltage is applied from a lower-side power supplying unit, and a both-sides power supply state in which the high-frequency pulse voltage is applied to the wire electrode from both power supplying units in synchronization with each other during a period of electric discharge machining.