关键词: 激光拼焊, 碾压机构, 碾压轮, 优化设计

Abstract: Rolling technology was an effective way to solve the gap problems of unequal-thickness blanks tailored laser welding, the rolling wheel was the core of the rolling mechanisms, and the structural parameters directly affected the rolling effectiveness. Through the simulation analyses of the rolling processes, the relationship among the rolling wheel parameters and the width spreads, the rolling forces was determined. Based on the experimental data of the simulation experiments, the RBF neural network model of the rolling mechanisms were established by learning and training. Based on the model, 10 000 experimental data were obtained. On the basis of these large data, the structure parameters of the rollers were optimized with smaller rolling forces and wider width spreads. Based on the optimization results, the rolling mechanism was designed， and the welding effectiveness and the welding effectiveness after rolling were verified.

Key words: tailored laser welding, rolling mechanism, rolling wheel, optimum design