| 摘要 |
PURPOSE:To store continuously a weld line by providing a contact detecting circuit of an electrode and a base metal, and a torch oscillation controlling circuit, and also providing a storage device of a weld line position. CONSTITUTION:A torch 2 runs in the (y) axis direction by a rotation of a running motor 5, and executes an oscillating motion in the (x) axis direction by a motor 6. A contact detecting circuit 13 detects a contact of an electrode 3 and a base metal 1 through a DC power source 12l of a voltage applying circuit 11. An oscillation controlling circuit 1l4 responds to a contact detecting signal of the circuit 13 and makes the torch 2 separate and approach repeatedly from and to the base metal 1. Also, a storage device 17 reds and stores weld line position information from a pulse counter 8. The electrode 3 of the torch 2 is positioned between the base metals 1, the torch 2 is run by a motor 5, and also the oscillating motor 6 is driven through a switch 22a. The storage device 17 stores a curved weld line 23 by using the torch 2 as a sensor, by this method. |
