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电阻点焊中电极位移三段距离测量方法及试验验证

王先锋, 蒋忠城, 段华东, 彭章祝

王先锋, 蒋忠城, 段华东, 彭章祝. 电阻点焊中电极位移三段距离测量方法及试验验证[J]. 焊接学报, 2016, 37(8): 63-66.
引用本文: 王先锋, 蒋忠城, 段华东, 彭章祝. 电阻点焊中电极位移三段距离测量方法及试验验证[J]. 焊接学报, 2016, 37(8): 63-66.
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WANG Xianfeng, JIANG Zhongcheng, DUAN Huadong, PENG Zhangzhu. Three distance method and its experimental verification for electrode displacement measurement in resistance spot welding[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2016, 37(8): 63-66.
Citation: WANG Xianfeng, JIANG Zhongcheng, DUAN Huadong, PENG Zhangzhu. Three distance method and its experimental verification for electrode displacement measurement in resistance spot welding[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2016, 37(8): 63-66.
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电阻点焊中电极位移三段距离测量方法及试验验证

  • 中车株洲电力机车有限公司, 株洲 412001

Three distance method and its experimental verification for electrode displacement measurement in resistance spot welding

  • CRRC Zhuzhou Locomotive Co. Ltd., Zhuzhou 412001, China

摘要

    摘要
  • 摘要: 针对电阻点焊中传统的上电极运动测量方法和长臂工装测量方法中，因焊接过程中焊接热膨胀力引起的焊钳变形带来电极位移测量误差，提出了采用梯形关系和三段距离的电极位移测量方法，并对比分析了这两种测量方法的累计计算误差；然后针对误差较小的三段距离测量方法，通过设计倒F形工装，采用激光位移传感器和基于LabVIEW编程的嵌入式工控机数据采集系统等组成的电极位移试验监测和验证系统，用工艺试验进行验证.结果表明，三段距离测量方法具有准确性和可行性，由动态电极力引起的C形焊钳下电极的变形位移是不可忽略的电极位移值的组成部分.
    Abstract: For the traditional measurement methods including the upper electrode movement and long arm tooling in resistance spot welding, there are errors in measuring electrode displacement, which introduced by the deformation of welding torches caused by the welding thermal expansion force during resistance spot welding process. Therefore, the trapezoidal relationship measurement method and three distance measurement method were suggested, and their accumulative calculation errors were analyzed and compared. Then, the three distance measurement method with less errors was experimentally verified through using the inverted F type tooling and experimental monitoring and verification system for electrode displacement measurement using laser displacement sensors and data acquisition system of embedded industrial control computer with LabVIEW programming. The results showed that it is correct and feasible, and the deformation displacement of lower electrode of the C type welding torches is not the neglectful part of the electrode displacement introduced by the dynamic electrode force.
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    • 参考文献(10)
  • [1] 王先锋, 孟国香, 谢文华, 等. 交流电阻点焊中电极位移波动特征的分析[J]. 焊接学报, 2010, 31(11):109-112. Wang Xianfeng, Meng Guoxiang, Xie Wenhua, et al. Analysis on electrode displacement fluctuation characteristics in AC resistance spot welding[J]. Transactions of the China Welding Institution, 2010, 31(11):109-112.
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    [8] 王先锋, 杨颖, 王国军, 等. 交流电阻点焊中电极位移的测量方法分析[J]. 焊接学报, 2014, 35(7):87-91. Wang Xianfeng, Yang Ying, Wang Guojun, et al. Analysis of electrode displacement measurement method in resistance spot welding[J]. Transsactions of the China Welding Institution, 2014, 35(7):87-91.
    [9] 王先锋, 王国军, 苏柯, 等. 一种电阻点焊中电极位移变化量的测量装置:中国, 201210464054.4[P]. 2012-11-16.
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  • 收稿日期:  2014-09-01

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