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:
May. 22, 2012
Filed:
Oct. 19, 2006
Takashi Hashimoto, Tokyo, JP;
Koichiro Hattori, Tokyo, JP;
Yoshikazu Ukai, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A power supply circuit for a wire electric discharge machining apparatus includes an auxiliary power supply () for generating an auxiliary discharge by applying a voltage between a workpiece () and a wire electrode (); and a plurality of main power supplies (and), a first one of which electrically connected to an upper terminal block () for connecting to an upper electrical supply point () and a second one of which electrically connected to a lower terminal block () for connecting to a lower electrical supply point (), in order to supply a main discharging current after the auxiliary discharge has occurred; wherein the power supply for the wire electric discharge machining apparatus controls the auxiliary power supply () and the plurality of main power supplies (and), to machine the workpiece (), and a first end of the auxiliary power supply is connected to the upper terminal block () and a second end thereof to the lower terminal block ().