Transactions of Materials and Heat Treatment

Title：A rapid design method for the tool surface of sheet metal with complex space and curved surface

Authors： Yuan Hongliang Yang Zhongjiong Zhou Liqiang Li Hongbin Lu Yaozhong

Unit： Central South University

KeyWords： tool surface design springback compensation spring-forward method volume morphing

ClassificationCode：TG386

year,vol(issue):pagenumber：2015,40(5):28-32

Abstract：

In order to reduce development cycle of forming die for sheet metal with complex space and curved surface, and improve the success rate of design, a rapid design method for stamping die surface of sheet metal with complex space and curved surface based on the volume morphing method was put forward. First, stamping process of sheet metal whose tool surface was the ideal product surface was simulated by using finite element method, and the displacement vectors and the internal forces of sheet metal nodes were achieved. Then, the compensatory tool surface was obtained iteratively by the spring-forward method, and each iteration step went through the reconstruction process from point to surface, therefore the reconstruction speed of tool surface was speeded up by introducing the volume morphing method and the quality of surface after reconstruction was improved. At last, the effectiveness of the algorithm was validated through experiment of spiral vanes in concrete mixer truck. The analysis of the experimental results shows that the average computation time of the three vanes is reduced by 26.1% using the volume morphing method, and the calculation speed increases obviously. The average springback deviation of the three vanes after springback compensation is reduced by 85.1%, and it is showed that the springback compensation effect is obvious.

Funds：

国家重点基础研究发展规划(“973”计划)项目(2013CB035404)

袁宏亮（1989-），男，硕士研究生

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