| 摘要 |
PURPOSE:To decrease positioning times by manual operation as far as possible by displacing a welding torch in the direction at a right angle to a weld line with a driving device in accordance with the gradient from a reference position at every positioning of the torch by the manual operation. CONSTITUTION:A welding torch 1 is moved in an X-axis direction by a driving device 4 along a rail 3 in parallel with a weld line 2. The torch 1 is freely attachable and detachable to and from the line 2 along the Y-axis at a right angle to the X-axis. The position of the torch 1 along the X-axis is detected by a position detector 6 and the position along the Y-axis by a position detector 7. The positions of the torch 1 along the X-axis and the Y-axis detected by the detectors 6, 7 are inputted to a controller 8. Every time when the torch 1 is positioned manually, the controller 8 forecasts the degree of inclination of the weld line with respect to the rail 3 from the positions of the welding torch along the X-axis and the Y-axis and displaces the torch 1 in the Y-axis direction by means of a driving device 5 in accordance with the forecast degree. |
