| 摘要 |
PROBLEM TO BE SOLVED: To obtain a weaving device in an automatic welding machine, by which all position automatic welding can be applied to a welding member, by making the weaving device small and lightweight. SOLUTION: An air motor 2 for oscillating an output shaft at a given period and a given angle is used as a drive source of a weaving device, and a crankshaft 11 is attached to an output shaft 3 of the air motor 2. A weaving arm 10 fixed to a torch holder 5 holding a welding torch 4 is coupled to the crankshaft 11, and then the air motor 2 is actuated so as to oscillate the output shaft 3. By oscillation of the output shaft 3, the crankshaft 11 is reciprocated, so as to weave the weaving arm 10.
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