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:
Jun. 08, 2004
Filed:
Sep. 05, 2002
Takuji Magara, Tokyo, JP;
Hisashi Yamada, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A wire electrical discharge machine includes a wire bobbin with a wire electrode wound therearound; a fixing base for fixing the wire bobbin so that the wire bobbin does not rotate; a guide pulley for supporting the wire electrode ; a rotating arm for supporting the guide pulley and for pulling out the wire electrode from the wire bobbin and rotating the wire electrode about the wire bobbin ; a sliding mechanism for supporting the guide pulley slidably with respect to the rotating arm , in correspondence with a winding position of the wire electrode on the wire bobbin ; and a braking motor for driving the rotating arm . It is possible to disperse the wear of the wire electrode and improve the machining rate and machining accuracy. Further, it is possible to improve the reliability and suppress an increase in cost.