| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for controlling the aiming position of a wire and a position controller capable of accurately feeding a welding wire to the aiming position of a member to be welded, regardless of change in the twisting quantity of the wire, and also to provide, in the case of sheet welding, a method capable of accurately securing the aiming position of a torch and a stable welding quality. SOLUTION: The method for controlling an aiming position of a wire comprises a process of (1) determining the intersection K1 between a line L1 connecting the center of a tip 10 to the tip end of the wire and an extension plane L2 including a virtual aiming position K at a prescribed position, (2) calculating a wire displacement quantity C which is a distance between the intersection K1 and the virtual aiming position K, (3) compensating at least one from the welding wire W and the member 14 to be welded, along the extension plane L2 by the wire displacement quantity C, and (4) grasping the virtual aiming position K as the tip end position of a measuring needle to be attached to the torch 9. The position controller using this method is also disclosed. COPYRIGHT: (C)2006,JPO&NCIPI
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