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:
Aug. 25, 2015
Filed:
Nov. 30, 2011
Applicants:
Masahiro Okane, Chiyoda-ku, JP;
Satoshi Suzuki, Chiyoda-ku, JP;
Kiyohito Oda, Chiyoda-ku, JP;
Inventors:
Assignee:
Mitsubishi Electric Corporation, Tokyo, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B23H 1/02 (2006.01); B23H 7/04 (2006.01); B23H 7/02 (2006.01);
U.S. Cl.
CPC ...
B23H 1/02 (2013.01); B23H 1/022 (2013.01); B23H 7/02 (2013.01); B23H 2300/20 (2013.01);
Abstract
The present invention includes a series circuit that includes a DC power supply and a switching element for supplying a DC or AC current pulse to a machining gap between a machining electrode and a workpiece; and a control unit that controls the switching element, wherein when generating a current pulse having a triangular shape by an inductance present on the series circuit, the control unit controls on-time and off-time of the switching element such that a peak value of an arbitrary current pulse in a pulse train including a plurality of current pulses changes.