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:
Sep. 19, 2017
Filed:
May. 14, 2015
Fanuc Corporation, Yamanashi, JP;
Yasuhiro Amagata, Yamanashi, JP;
FANUC CORPORATION, Yamanashi, JP;
Abstract
A spot welding system includes a position detection part which detects the position of a movable arm, a first calculation part which calculates the combined spring constant of the movable arm and a fixed arm based on a position when the movable arm is driven by a predetermined drive force and the drive force, a second calculation part which calculates the spring constant of the movable arm based on a position when the movable arm is driven by a predetermined drive force and the drive force, a third calculation part which calculates the spring constant of the fixed arm based on the combined spring constant and the spring constant of the movable arm, and an elastic displacement calculation part which calculates an amount of elastic displacement of the fixed arm based on the spring constant of the fixed arm and a drive force when welding is performed.