| 摘要 |
PURPOSE:To eliminate the need for determining the reference value of arc current and to improve working efficiency by correcting the position of a welding torch at the weaving center of the torch in such a way that the deviation between the arc current value at the weaving center and the min. arc current value in weaving is decreased. CONSTITUTION:The positions of a welding torch 200 at the lower limit phase thetal, upper limit phase thetar, central phase thetac in a weaving width W are 200L, 200R, 200C. Ic denotes the arc current value at the center of a weaving pattern, i.e., the phase thetac, and Io denotes the min. value of the arc current. DELTAI is the deviation value between the central value Ic and the min. value Io. The position 200c of the torch 200 at the center of the weaving pattern is so corrected as to decrease the deviation value DELTAI. |
