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, 1987
Filed:
Oct. 16, 1985
Applicant:
Inventor:
Roland Martin, Dingy-en-Vuach, FR;
Assignee:
Charmilles Technologies S.A., Geneve, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23H / ; B23H / ; B23H / ;
U.S. Cl.
CPC ...
219 / ; 219 / ; 219 / ;
Abstract
An arrangement for applying an electromagnetic force on the electrode wire of a travelling wire EDM apparatus by passing through the workpiece an auxiliary current parallel to the current flowing through the electrode wire, in one direction or the other. The points of application of the auxiliary current on the surface of the workpiece are disposed opposite to the front of a cut relative to the electrode wire in order to obtain a resultant force which either pulls the electrode wire away from the front of the cut or draws it closer to the front of the cut.