关键词: 白车身制造, 在线测量系统, 尺寸监控

Abstract: With the increasing demand for automotive personalization,the co-production of multiple vehicle models on the same production line has led to a sharp increase in problems such as misassembly and gaps of body-in-white parts. Although traditional correction devices can partially improve the matching problems of components,they have defects such as lagging response and limited coverage. An online measurement system based on displacement sensor network data fusion is proposed. Through a displacement sensor network,a Vehicle Identification Number (VIN) binding algorithm,and a real-time early warning mechanism,100 % online monitoring of the key dimensions of the body-in-white is realized. The application in the CN series vehicle models of an automotive company shows that this system reduces the defect escape rate from 10.00 % to 0.03 %,and the detection efficiency of tooling displacement is improved by 4 times (the response time is shortened from 5 h to 1 h).

Key words: body-in-white manufacturing, online measurement system, dimensional monitoring