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:
Feb. 28, 1995
Filed:
Nov. 26, 1993
Applicant:
Inventors:
Assignee:
Industrial Technology Research Institute, Hsinchu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23H / ; B23H / ;
U.S. Cl.
CPC ...
219 6918 ; 219 6912 ;
Abstract
A device for controlling a wire cut electric discharging machine is provided with a testing circuit to detect the condition between the wire electrode and the workpiece before every discharge process so as to regulate the discharge energy according to one of the detected conditions: normal discharge, arc discharge, or short circuit. The device includes two switching transistors controlled by a control unit according to the comparison result between a reference voltage and the voltage measured between the wire electrode and the workpiece being processed.