| 摘要 |
PROBLEM TO BE SOLVED: To solve such a problem that arises in a controlling for a servo gun for a spot welding equipment in which the position of a servo control part driving the moving body part of a gun shaft is controlled, because a variance exists among works or tools for holding works, a fixing shaft of the gun strongly hits the work when the position is controlled, thus the work is deformed. SOLUTION: The moving part of the gun shaft is set to be stationary at an original position by a electric current limiting means of the servo control part for driving the moving body part of the gun shaft, the reaction force from the work occurring when the front end of the movable shaft of the gun hits the work is received by the main body part of the gun shaft and thereby the fixing shaft of the gun slowly advances toward the work, thus the fixing shaft of the gun holds the work with a light pressing force, and the work is not deformed even when a variance exists among works or tools for holding works.
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