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:
Mar. 10, 1998
Filed:
Feb. 23, 1996
Applicant:
Inventors:
Assignee:
Fanuc Ltd., Minamitsuru-gun, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01K / ; G01K / ; G01K / ; G01K / ;
U.S. Cl.
CPC ...
374137 ; 374141 ; 374183 ; 73160 ; 219 6917 ; 36447404 ;
Abstract
A wire temperature measuring method for a wire electric discharge machine, by which temperature and temperature distribution of a wire can be accurately measured during electric discharge machining. After a machining voltage is cut off, a loop current flows. Based on the loop current and a voltage between electrodes measured by a differential amplifier, a resistance between the electrodes is obtained, and the temperature of a wire is obtained based on the resistance. Accordingly, the wire temperature during actual machining operation can be measured with accuracy.