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:
May. 05, 2020
Filed:
Jan. 25, 2018
Applicant:
Fanuc Corporation, Yamanashi, JP;
Inventors:
Tomoyuki Furuta, Yamanashi-ken, JP;
Yasuo Nakashima, Yamanashi-ken, JP;
Akiyoshi Kawahara, Yamanashi-ken, JP;
Assignee:
FANUC CORPORATION, Yamanashi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23H 7/10 (2006.01); B23H 7/04 (2006.01); B23H 11/00 (2006.01); B23H 1/02 (2006.01);
U.S. Cl.
CPC ...
B23H 7/10 (2013.01); B23H 1/028 (2013.01); B23H 7/04 (2013.01); B23H 11/00 (2013.01); B23H 1/02 (2013.01);
Abstract
A wire electrical discharge machine includes: an electrode unit for supplying a machining current to an electrode gap; a switch for changing impedance between a machining power source and the electrode unit; and a controller for, at the time of a core retaining process, controlling the switch to set the impedance to be higher than the impedance in a cutting process and thereby suppressing the machining current flowing through the electrode gap.