On-line weld quality inspection based on weld indentation by using servo gun

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作者：
School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200030, China [1 ]
机构：
来源：
Hanjie Xuebao | 2006年 / 10卷 / 57-60期
关键词：
Carbon steel - Inspection - Online systems - Quality assurance - Quality control - Spot welding;
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学科分类号：
摘要：
Resistance spot welding (RSW) is the primary joining method for car-body assembly. Control and inspection of weld quality have great importance to improve the performance of car. Based on the position feedback characteristics of servo encoder, online weld Quality inspection method was proposed by using weld indentation. A spot welding experimental system including robot, robot controller, servo gun and weld controller was integrated. The developed measurement program was used to acquie weld indentation online, and the measured results was calibrated by PLC displacement control system. The experimental results showed that the acquired weld indentation can reflect the real indentation on the 0.8 mm low carbon steel (GMW2). The weld quality inspection rate can meet the demand for real production. The proposed on-line weld quality inspection method can meet the demand of welded joint measurement in real plant environment.
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