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:
Dec. 13, 1983
Filed:
Sep. 14, 1981
Benno I Bonga, Crans, CH;
Ateliers des Charmilles S.A., Geneva, CH;
Abstract
An adjustable and controllable electrode wire support and guide mechanism for traveling wire EDM apparatus wherein an electrode wire, longitudinally fed, is stretched between a pair of support and guide members, and wherein at least one of the support and guide members is in the form of a helically grooved cylindrical member directly driven by a servo-motor. The helical groove defines guiding surfaces for the electrode wire which is in engagement with opposite sidewalls of the groove and, by rotating the helically grooved support and guide member by the servo-motor, the electrode wire is caused to take a predetermined inclination relative to the workpiece. The invention permits to reduce the number of moving parts required for inclining an electrode wire to two elements only which provide a precise guiding for the electrode wire, which considerably reduce play, backlash and other errors due to geometric imperfections of the conventional slides and cross-slides normally used for varying the inclination of wire electrodes in traveling wire EDM apparatus.