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:
Nov. 09, 2004
Filed:
Mar. 20, 2003
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
Wire electric discharge machine in which traveling direction of wire electrode is changed by lower roller arranged at lower portion of a workpiece, wire electrode is held and pulled by capstan roller and pinch roller, and electric power is supplied between wire electrode and workpiece while wire electrode is traveling so that workpiece is machined by electric discharge energy, capstan roller and pinch roller are arranged so that angle &thgr; by which the traveling direction of wire electrode is changed by capstan roller and pinch roller, can be 0°<&thgr;<90° directed upward with respect to traveling direction of wire electrode, direction of which is changed by lower roller. Breakage of wire electrode can be supressed. Feed of wire electrode can be automated. When wire cutter is used, entry of machining solution into wire cutter can be prevented. When wire cutter is not used, accommodation of used wire electrode can be enhanced.