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:
Nov. 07, 2017
Filed:
Jun. 23, 2014
Applicant:
Fanuc Corporation, Yamanashi, JP;
Inventor:
Takuma Nishimura, Yamanashi, JP;
Assignee:
FANUC CORPORATION, Yamanashi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05B 19/40 (2006.01); G05B 19/404 (2006.01);
U.S. Cl.
CPC ...
G05B 19/404 (2013.01); G05B 2219/37405 (2013.01); G05B 2219/49219 (2013.01);
Abstract
A machine tool includes a shaft load measuring unit measures a load of the main shaft motor. When a measured load of the main shaft motor exceeds a predetermined value, it is determined that a tool is brought into contact with a work. Detection and correction of thermal displacement of the main shaft are performed by comparing a reference time and a measured time for the tool to reach the work.