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:
Jul. 27, 2021
Filed:
Nov. 07, 2019
Applicant:
Fanuc Corporation, Yamanashi, JP;
Inventor:
Yohei Arimatsu, Yamanashi-ken, JP;
Assignee:
FANUC CORPORATION, Yamanashi, JP;
Primary Examiner:
Int. Cl.
CPC ...
G01H 13/00 (2006.01); B23Q 17/12 (2006.01); G01N 29/44 (2006.01); G01H 1/00 (2006.01); G01N 29/12 (2006.01);
U.S. Cl.
CPC ...
G01N 29/12 (2013.01); B23Q 17/12 (2013.01); G01H 1/003 (2013.01); G01H 13/00 (2013.01); G01N 29/4454 (2013.01);
Abstract
A machine tool includes: a first calculator configured to calculate a first frequency characteristic based on a first oscillation signal and a measurement signal of a physical quantity measured by a measurement unit when the drive shaft of a servo motor swings in accordance with the first oscillation signal; and a second calculator configured to calculate a second frequency characteristic based on a second oscillation signal and a measurement signal of the physical quantity measured by the measurement unit when the drive shaft of the servo motor swings in accordance with the second oscillation signal.