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:
Jan. 04, 2005
Filed:
Sep. 13, 2000
Naotake Mohri, Tokyo 164-0111, JP;
Nagao Saito, Tokyo, JP;
Hajime Ogawa, Tokyo, JP;
Kiyohito Kamiya, Tokyo, JP;
Naotake Mohri, Tokyo 164-0111, JP;
Nagao Saito, Tokyo, JP;
Hajime Ogawa, Tokyo, JP;
Kiyohito Kamiya, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Other;
Abstract
An electric discharge machining apparatus for supplying machining electric power to a gap between an electrode () and a workpiece (). The apparatus includes a gap dimension detection device () for detecting a dimension of the gap, a gap average voltage detection device () for detecting an average voltage of the gap, a gap dimension correction device () for correcting the dimension of the gap, and a gap dimension correction starting device () for starting the gap dimension correction device () when a first comparison between a detected gap dimension and a predetermined allowable value and a second comparison between a detected gap average voltage and a predetermined reference average voltage are made and the gap dimension detected by the first comparison is larger than the predetermined allowable value and the gap average voltage detected by the second comparison is smaller than the predetermined reference average voltage.