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:
Sep. 21, 2010
Filed:
Feb. 11, 2008
Yuki Kita, Yamanashi, JP;
Hiroyuki Abe, Yamanashi, JP;
Yoshinori Makino, Yamanashi, JP;
Fanuc Ltd, Yamanashi, JP;
Abstract
When a wire electrode is arranged along a traveling path by manual operation, a motor Mfor feeding the wire electrode to a workpiece is driven in response to a predetermined torque command from a control section with a switch SWon a side a. The wire electrode is connected, and a motor Mfor delivering the electrode from the wire is driven at a predetermined speed, whereby the electrode is run. Then, the switch SWis shifted to a side b and a switch SWto the side a, and the motor Mis subjected to torque control such that a tension on the wire electrode detected by a tension detector is equal to a command tension. When a variation of the tension on the wire electrode is converged, the switches SWand SWare shifted to the side b, speed control of the motor Mis performed so that detected tension is equal to the command tension, and electric discharge machining is started.