| 摘要 |
PURPOSE:To detect the end part of a weld line simply, accurately and in real time by setting a position where output voltage of a magnetic sensor attached to a welding torch that moves along the weld line as the end part of the weld line. CONSTITUTION:In a welding machine in which a welding torch 3 made movable perpendicularly to a base metal 1 by a driving shaft 6 and a driving motor 7 is mounted on a welding truck 2 that is moved on the base metal 1 by a motor 5 and moved in the direction of welding, a magnetic sensor 4 is attached to above- mentioned welding torch 3 to keep a specified distance from the base metal 1 and the output voltage is detected and outputted to a controlling device 8. The end part of the weld line is detected at a place where the output voltage exceeds a threshold value set beforehand experimentally, and the motor 5 for running the truck and welding power source 9 are stopped. |
