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:
May. 30, 2000
Filed:
May. 10, 1999
Masatoshi Sano, Kakogawa, JP;
Naoyuki Matsumoto, Akashi, JP;
Kawasaki Jukogyo Kabushiki Kaisha, Kobe, JP;
Abstract
The disclosed spot welding robot controlling method and apparatus is able to carry out an operation for pressurizing a spot welding gun without a dead time of a spot welding robot which has the spot welding gun driven by a fluid pressure. The control method includes the steps of measuring a gun closing time, measuring an axial coincidence time, calculating a time difference between the time point of the command position axial coincidence and the output time point of the pressurization command in an actual welding operation using the gun closing time and the axial coincidence time, and outputting the pressurization command to the spot welding gun at a time point which is derived by subtracting the time difference from the time point of the command position axial coincidence in the actual welding operation.