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:
Apr. 14, 2020
Filed:
Oct. 03, 2018
Fanuc Corporation, Yamanashi, JP;
Satoshi Adachi, Yamanashi, JP;
FANUC CORPORATION, Yamanashi, JP;
Abstract
A belt replacement determination device includes a drive control section configured to drive, based on an evaluation operation set in advance, two or more motors out of a plurality of motors which drive joint shafts of a robot, the two or more motors including the motor which drives at least one of the joint shafts through pulleys and belts; a detection section configured to detect motor torques of the two or more motors which vary according to the evaluation operation; a torque difference calculation section configured to calculate a difference between the motor torques detected of the two or more motors; a difference variation amount calculation section configured to calculate a variation amount between two differences detected at two points of time; and a determination section configured to determine replacement of the belt upon an absolute value of the variation amount calculated exceeding a predetermined threshold.