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. 19, 1991
Filed:
Apr. 25, 1990
Seigo Nishikawa, Kitakyushu, JP;
Shinji Okumura, Kitakyushu, JP;
Tadayuki Amano, Kitakyushu, JP;
Kazutoshi Hata, Kitakyushu, JP;
Kabushiki Kaisha Yaskawa Denkiseisakusho, Kukuoka, JP;
Abstract
In the case where lap fillet welding is carried out by a conventional arc welding robot, when a weld wire is once departed towards an upper plate, the wire keeps being away from a weld line, and therefore, various teaching techniques so as to prevent such a departure have been re-required. In the case where a weld line is long, if the wire is departed, a defective weld length becomes long, thus posing an significant problem. The present invention provides a control method for an arc sensor by detection of a weld current. That is, a departure of a lap fillet weld towards an upper plate is prevented merely by addition of a detection algorithm, teaching can be simplified and practical merits are great.