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.

Date of Patent:
Aug. 04, 2020

Filed:

Jun. 15, 2018
Applicant:

Fanuc Corporation, Yamanashi, JP;

Inventor:

Ryou Nishikawa, Yamanashi, JP;

Assignee:

FANUC CORPORATION, Yamanashi, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23H 7/20 (2006.01); B23H 7/18 (2006.01); G05B 19/19 (2006.01); B23H 7/32 (2006.01); B23H 7/16 (2006.01); B23H 7/04 (2006.01);
U.S. Cl.
CPC ...
B23H 7/20 (2013.01); B23H 7/04 (2013.01); B23H 7/16 (2013.01); B23H 7/18 (2013.01); B23H 7/32 (2013.01); G05B 19/19 (2013.01); G05B 2219/42249 (2013.01); G05B 2219/45043 (2013.01); G05B 2219/45221 (2013.01);
Abstract

A control device includes a speed setting unit configured to set a relative movement speed of a wire electrode with respect to a workpiece depending on the average of gap voltage per unit time, i.e., average gap voltage, and set the relative movement speed so as to move the wire electrode backward when the average gap voltage is less than a threshold, and a map compensation unit configured to change the threshold from a first threshold that is set when the amount of change in the average gap voltage is lower than a predetermined variation, to a second threshold that is greater than the first threshold, when the average gap voltage has changed in a decreasing direction and the amount of change in the average gap voltage becomes equal to or greater than the predetermined variation.


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