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. 20, 2004
Filed:
Mar. 06, 2003
Jui-Kuan Lin, Hsinchu, TW;
Yung-Feng Nien, Hsinchu, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
An automatic breakthrough detection device for drilling electric discharge machine is provided. The automatic breakthrough detection device utilizing the facts of the variations of high frequency spectrum components of the provided discharge voltage and the variation of servo-feed-rate of the electrode as drilling discharge. The device includes a high frequency spectrum detecting analyzer to produce digital logic determining signals and a breakthrough judging logic device to judge the breakthrough by the electrode on the workpiece. Accordingly, the drilling electric discharge machine automatically adjusts the discharge parameters and the electrode withdrawals from the drilled hole and continues the next drilling hole on the workpiece. The present invention also provides a method of the same.