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:
Jul. 02, 1985
Filed:
Jan. 27, 1983
Kiyoshi Inoue, Tokyo, JP;
Akihiko Shimizu, Kawasaki, JP;
Inoue-Japax Research Incorporated, Yokohama, JP;
Japax Incorporated, Kawasaki, JP;
Abstract
An electrode positioning method and apparatus for NC-EDM wherein a tool electrode and a workpiece are relatively displaced under commands of an NC unit while EDM stock removal of the workpiece is advanced by developing effective electrical discharges between the tool electrode and the workpiece. The method comprises counting the effective electrical discharges, deriving a corrective amount of displacement from a prescribed amount of electrode wear per single effective discharge, the effective machining area of the tool electrode and the counted number of the electrical discharges. The corrective amount is used to correct the commanded relative displacement.