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:
Oct. 19, 2010
Filed:
Jul. 31, 2006
Ernst Buhler, Losone, CH;
Franck Besson, Fillinges, FR;
Rino D'amario, Sigirino, CH;
Nicola Giandomenico, Troinex, CH;
Reto Knaak, Ascona, CH;
Ernst Buhler, Losone, CH;
Franck Besson, Fillinges, FR;
Rino D'Amario, Sigirino, CH;
Nicola Giandomenico, Troinex, CH;
Reto Knaak, Ascona, CH;
Agie Charmilles SA, Losone, CH;
Charmilles Technologies SA, Meyrin, CH;
Abstract
The invention relates to a method and generator for generating a time sequence of EDM pulses having a predefined ignition voltage for electrical discharge machining. An AC voltage is generated from a DC voltage, furnished by a bipolar current source. The AC voltage is applied to an isolating transformer disposed between the bipolar current source and the spark gap. A first pulse capacitor is charged by the bipolar current source to a voltage corresponding to the ignition voltage. The ignition voltage provided by the isolating transformer is switched with a selected polarity to the spark gap.