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本文介绍了弧焊机器人在进行“Ｖ”型坡口对接焊或角接焊时，为了跟踪焊缝轨迹而进行的焊缝位置检测方法—电流检测法．通过对焊接电流信号的数字处理，提取了反映焊枪与焊缝相对位置的特征信号，定时向机器人控制器提供修正信号，从而使固定在机器人手臂上的焊枪准确地跟踪焊缝．
This paper introduces the current detection method of the welding seam position for tracking the welding track when the arc welding robot performs “V” bevel butt welding or angle welding. Through the digital processing of the welding current signal, the characteristic signal reflecting the relative position of the welding torch and the welding seam is extracted, and the correction signal is provided regularly to the robot controller so that the welding gun fixed on the robot arm can accurately track the welding seam.