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:
Apr. 21, 1981
Filed:
Dec. 27, 1978
Applicant:
Inventor:
Roland Martin, Dingy en Vuache, FR;
Assignee:
Ateliers des Charmilles, S.A., Geneva, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23P / ;
U.S. Cl.
CPC ...
219 / ; 219 / ;
Abstract
In an EDM apparatus in which the relative displacement between an electrode tool and an electrode workpiece is effected by a servo motor, a control system for the servo motor to effectuate the relative displacement of the electrodes at a speed depending from the machining conditions at the gap between the electrodes and from the difference between a reference position signal and a signal representing the actual relative position of the electrodes, such as to limit the relative displacement of the electrodes until a predetermined final relative position has been reached.