• CN:11-2187/TH
  • ISSN:0577-6686

›› 2007, Vol. 43 ›› Issue (9): 211-214.

• 论文 • 上一篇    下一篇

视觉传感铜包铝线缆TIG焊缝自动跟踪系统

李云峰;赵熹华;李永强;衣楠   

  1. 吉林大学材料科学与工程学院;长春工业大学材料科学与工程学院;大连傅氏双金属制造有限公司
  • 发布日期:2007-09-15

VISUAL SENSOR FOR AUTOMATIC WELD SEAM TRACKING TO TIG WELDING OF COPPER-CLAD ALUMINUM WIRE

LI Yunfeng;ZHAO Xihua;LI Yongqiang;YI Nan   

  1. College of Material Science and Engineering, Jilin University College of Material Science and Engineering, Changchun Univesity of Technology Dalian Fushi Bimetallic Manufacturing Co. Ltd
  • Published:2007-09-15

摘要: 针对铜包铝线缆TIG焊常出现焊偏的问题,研制一种采用视频摄像传感器的焊缝自动跟踪系统。以弧光为主动光源,在电弧前方20 mm处对铜皮对口缝进行摄像。采用模拟电路对视频信号进行放大、整形和以动态平均值为基准的二值化等处理,极大降低了信号处理的时间,并准确获得铜皮对口缝的脉冲信号。确定铜皮对口缝偏差方向判断及偏差大小计算的方法。试验结果表明,该焊接过程采用视频摄像传感器识别铜皮对口缝方法是可行的,能实现铜包铝线缆TIG焊的焊缝自动跟踪控制,系统响应周期小于60 ms,跟踪精度小于0.1 mm。

关键词: TIG焊, 视觉传感器, 铜包铝线缆, 自动跟踪

Abstract: Aimed at the torch departure from seam in TIG welding of copper-clad aluminum wire, a visual sensor for automatic weld seam tracking system is developed by initiative arc light. The image of copper plate opposite seam is taken 20 mm the front of the torch. In order to decrease the time of video signal processing, analog circuit is applied in the process where video signal is magnified, trimmed and processed into binary by the datum of developing average value. Therefore, the waveform of video signal of copper plate opposite seam is obtained. The method that is used for judging the direction of warp and estimating the value of warp between copper opposite seam and tungsten electrode is established. Results show that the method is feasible to identify copper opposite seam based on visual sensor. A reliable system to real-time tracking seam of copper-clad aluminum wire TIG welding can be provided. The response cycle of this system is no more than 60 ms, and the tracking precision is less than 0.1 mm.

Key words: Automatic tracking, Copper-clad aluminum wire, TIG welding, Visual sensor

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