METHOD AND DEVICE FOR CONTROLLING SPOT WELDING

申请公布号：JP2000005882(A)

申请号：JP19990052726

申请日期：1999.03.01

申请公布日期：2000.01.11

申请人：

NISSAN MOTOR CO LTD

发明人：KAMISADA MITSUNORI

分类号：B23K11/24;B23K11/25;G01B21/00;(IPC1-7):B23K11/25

主分类号：B23K11/24

摘要：PROBLEM TO BE SOLVED: To carry out spot welding at high quality by detecting the displacement value between electrodes during welding time by time. SOLUTION: According to this control method, the abrasion value of a pair of electrodes is detected and the current is applied while a welded member is pressurized by the pair of electrodes so as to continuously detect the displacement value between the pair of electrodes while the current is applied from a reference position a. Then, the detected displacement value between the electrodes is corrected by the detected abrasion value, so as to judge a welding condition of the welded member based on the displacement value h between the electrodes after correction.

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