| 摘要 |
PURPOSE: A weld line tracing system of automatic welding machine is provided in which a welding torch is capable of performing welding as tracing the weld line accurately by measuring surface temperature of a base metal during automatic welding. CONSTITUTION: In a system for tracing weld line according to temperature of a base metal to perform welding as a slider to which a welding torch is fixed is being transferred on an X-Y table(1), the weld line tracing system of automatic welding machine comprises a pair of temperature sensors(10a,10b) installed at both sides of the welding torch to measure each temperature of two base metals during welding operation; a signal board(11) for outputting the temperature value converted into the preset voltage by converting temperature values measured by the temperature sensors(10a,10b) into a preset voltage; and a controller(13) for receiving the converted digital signals by converting analog signals outputted from the signal board(11) into digital signals through an A/D converter(12), and outputting signals for controlling position of the X-Y table(1) by the judged signals after judging whether the center line of the welding torch is deviated from the weld line or not.
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