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.

Date of Patent:
Jan. 29, 2019

Filed:

Oct. 20, 2015
Applicant:

Mitsubishi Electric Corporation, Chiyoda-ku, JP;

Inventors:

Hiroki Hikosaka, Tokyo, JP;

Kazunari Morita, Tokyo, JP;

Hiroshi Yoshikawa, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23H 1/02 (2006.01); B23H 7/18 (2006.01); B23H 7/30 (2006.01); B23H 7/16 (2006.01); B23H 9/00 (2006.01); B23H 7/20 (2006.01);
U.S. Cl.
CPC ...
B23H 1/02 (2013.01); B23H 7/16 (2013.01); B23H 7/18 (2013.01); B23H 7/30 (2013.01); B23H 7/20 (2013.01); B23H 9/006 (2013.01);
Abstract

An electric discharge machine includes an electrode, a shaft-feed driving unit that, a voltage/current applying unit, a shaft-feed control unit that causes the shaft-feed driving unit to perform a jump operation, and a machining-condition setting and changing unit that sets a voltage applied between the electrode and a workpiece and an electric current flowing between the electrode and the workpiece. The machining-condition setting and changing unit determines whether the electric discharge between the electrode and the workpiece stabilizes after the jump operation ends and, in at least a part of a period before determining that the electric discharge stabilizes, sets at least one of the voltage and the electric current to a condition in which electric discharge more easily occurs than in the condition in applying the electric discharge machining.


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