Transactions of Materials and Heat Treatment

Title：Springback compensation strategy on large automobile sunroof based on AUTOFORM

Authors： Kong Min1 Hu Wei2 Liu Huihui1 Yang Weihong1 Jin Ya1

Unit： 1. Department of Mechanical and Electrical Engineering 2. Wuhan Santeli Mould Technology Co. Ltd.

KeyWords： compensation strategy springback compensation AUTOFORM convergence

ClassificationCode：TG386

year,vol(issue):pagenumber：2021,46(12):86-91

Abstract：

The problem of non-convergence for springback compensation in numerical simulation has become the main problem of springback compensation in the early stage. Therefore, for a large automobile skylight, a new compensation strategy was proposed by analyzing the problems existing in the current compensation idea and the reasons for the non-convergence of compensation, and the compensation convergence results of three common compensation ideas and the new compensation strategy were compared and analyzed. Finally, the stamping experiment was carried out based on the compensation surface generated by the new springback compensation strategy. The results show that the same springback amount is compensated in different processes, and the springback amount of trimming-punching process is compensated for the drawing process. After ensuring that the springback amount of the main profile is qualified after trimming, the springback amount of the shaping process is distributed to the drawing and shaping processes by 1∶2, and the compensation process is converged successfully after two iterative compensation. In addition, the springback amount of stamping experiment part is controlled within 0.5 mm, indicating that the springback compensation strategy of compensating the same springback compensation amount in different processes is reliable. Thus, this method has important guiding significance for the springback compensation and the production of similar parts.

Funds：

文华学院2020年度学校科研基金项目（2020Y18）

作者简介：孔敏（1991-），女，硕士，讲师 E-mail：13207131768@163.com 通信作者：靳亚（1990-），女，硕士，助教 E-mail：782802298@qq.com

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