Title :
Weld quality inspection based on on-line measured indentation from servo encoder in resistance spot welding
Author :
Xiaoyun, Zhang ; Yansong, Zhang ; Guanlong, Chen
Author_Institution :
Sch. of Mech. Eng., Shanghai Jiao Tong Univ.
Abstract :
Since resistance spot welding (RSW) has become the dominant way for car-body assembly, studies on spot welding quality control and on-line inspection are becoming more and more important for automobile industry. This article mainly relates an on-line weld quality inspection way based on electrode indentation measured from servo gun. In the servo spot welding system, electrode indentation is extracted from servo encoder and calibrated by a PLC data collecting system including laser displacement sensor and A/D convertor. Then a weld lobe along with indentation is determined for 0.8mm DP600 sheet. At last, on-line quality inspection is carried out according to the indentation range in the weld lobe to demonstrate that this method is reliable
Keywords :
data acquisition; indentation; inspection; programmable controllers; quality control; servomechanisms; spot welding; welds; 0.8 mm; A/D convertor; DP600 sheet; PLC data collecting system; RSW; electrode indentation; laser displacement sensor; on-line measured indentation; on-line quality inspection; on-line weld quality inspection; resistance spot welding; servo encoder; servo gun; servo spot welding system; weld lobe; Assembly; Automobiles; Electrical equipment industry; Electrical resistance measurement; Electrodes; Industrial control; Inspection; Quality control; Servomechanisms; Spot welding; PLC data collecting system; electrode indentation; resistance spot welding; servo encoder;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2006. IMTC 2006. Proceedings of the IEEE
Conference_Location :
Sorrento
Print_ISBN :
0-7803-9359-7
Electronic_ISBN :
1091-5281
DOI :
10.1109/IMTC.2006.328560
