Transactions of Materials and Heat Treatment

Title：Numerical simulation and forming precision analysis on counterroller spinning for large thinwalled cylindrical parts

Authors： Wang Dali Guo Yaming Li Yinan Huang Tao Gao Wulin Zheng Hongwei Xu Hengqiu

Unit： Changchun Equipment & Technology Research Institute Jilin University

KeyWords： counterroller spinning cylindrical parts forming precision reduction amount feeding rate

ClassificationCode：TG376

year,vol(issue):pagenumber：2020,45(3):47-54

Abstract：

In order to study the forming mechanism and breakthrough precision control technology of counter-roller spinning, the influences of process parameters such as pass thinning ratio, feeding rate, forming angle of roller and radius of inner roller on the roundness, straightness and wall thickness difference of spun part were analyze by the finite element method. The results show that when the pass thinning ratio Ψt is 20%-30%, the feeding rate f is 1.5-2.0 mm·r-1, the forming angle of roller αρ is 25°, the radius of inner roller rρ内 is 10 mm, the forming accuracy of spun part is the highest. At the same time, the influences of different reduction amounts of inner and outer rollers on forming accuracy were analyzed when the total reduction amount is 9 mm. And the results show that the spun parts have the highest precision when the reduction amount of outer roller is 5 mm and reduction amount of inner roller is 4 mm. Finally, the accuracy of the finite element simulation results is verified by the spinning experiment, and their deviation is less than 15%.

Funds：

国防基础科研计划项目（JCKY2016208B003）

王大力（1971-），男，学士，研究员 E-mail：wang_dali@sohu.com 通讯作者：郭亚明（1988-），男，博士，工程师 E-mail:18744026909@163.com

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