| 摘要 |
PURPOSE:To disuse an adjustment and to increase a welding quality by operating the possible weld line on and after the completion of main welding by finding plural oscillating centers immediately before a bead terminal part and by performing the treatment of the bead terminal part based thereon. CONSTITUTION:A signal is outputted to a memory arithmetic circuit 9 from a sequence circuit 13 when a torch 3 reaches to the point A and point B before the prescribed distance of the point B for starting a bead terminal part processing. This circuit 9 operates and stores the co-ordinates X, Y which are the oscillating center at the A and B. The co-ordinates X, Y of the oscillating center at A, B are inputted to an oscillating control circuit 10. This control circuit 10 operates and stores the possible weld line beta passing through the two points based on the both co-ordinates. To the control circuit 10 the signal of each half-cycle oscillation is inputted from the sequence circuit 13 at the time when the torch 3 passed through the point B and the oscillation center position is inputted to an axis X driving circuit 11. The oscillation of the torch 3 is thus focused along the possible weld line beta. |
