Transactions of Materials and Heat Treatment

Title：Numerical simulation on U-bending for curved chain plate based on orthogonal experiment

Authors： Wang Yongming Li Wei Tan Libin Hu Jitao Dong Shuhao

Unit： School of Mechanical Engineering Anhui University of Technology

KeyWords： curved chain plate U-bending dimensional deviation ratio orthogonal experiment range analysis variance analysis

ClassificationCode：TH162

year,vol(issue):pagenumber：2021,46(12):46-53

Abstract：

In order to analyze the influence of die fillet radius, unilateral clearance between die and punch and compensation springback angle of punch on U-bending of curved chain plate, an orthogonal experiment with three factors and four levels was designed, and sixteen groups of experiments were simulated numerically by Workbench to calculate the dimensional deviation ratio of the simulated forming workpiece. Then, with the goal of minimizing the error between the dimensions of the stamping simulation forming model and the process dimensions, the overall range analysis and the variance analysis were performed by the comprehensive weighted scoring method to obtain the optimal process parameters of mold. The results show that when the die fillet radius is 8 mm, the unilateral clearance between die and punch is 4.35 mm, and the compensation springback angle of punch is 0.05°, the U-bending effect of the curved chain plate is the best, which is the optimal process design parameters of mold. Through the experimental verification of mold prototype, the pass rate of workpiece after U-bending is over 97.7%, which basically meets the expected process design requirements.

Funds：

安徽省重点研究与开发计划项目(202004a05020008)

汪永明（1971-）,男，博士,教授 E-mail：wangym@ahut.edu.cn

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