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:
Sep. 13, 2016
Filed:
Oct. 30, 2012
Tomoaki Takada, Chiyoda-ku, JP;
Takashi Hashimoto, Chiyoda-ku, JP;
Ieyoung Kim, Chiyoda-ku, JP;
Takayuki Nakagawa, Chiyoda-ku, JP;
Yuto Sasaki, Chiyoda-ku, JE;
Yuji Nasu, Chiyoda-ku, JP;
Masato Terashima, Chiyoda-ku, JP;
Tomoaki Takada, Chiyoda-ku, JP;
Takashi Hashimoto, Chiyoda-ku, JP;
Ieyoung Kim, Chiyoda-ku, JP;
Takayuki Nakagawa, Chiyoda-ku, JP;
Yuto Sasaki, Chiyoda-ku, JE;
Yuji Nasu, Chiyoda-ku, JP;
Masato Terashima, Chiyoda-ku, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
An electric discharge machining apparatus of the present invention includes a power supply, an electrode gap configured so as to be formed by an electrode and a workpiece, and an earth floating-capacitance current-suppressing coil configured to be inserted between the power supply and the electrode gap. Accordingly, the impedance in the charging path from the power supply to an interelectrode capacitance (an interelectrode parallel capacitor and an interelectrode parallel floating capacitance) can be decreased, and the impedance in the charging path to an earth floating capacitance can be increased, thereby enabling the electric current from the earth floating capacitance during discharge machining to be suppressed.