Transactions of Materials and Heat Treatment

Title：Finite element analysis and die design on closed forging for vehicle gear disc

Authors： Gao Ya′nan1 Zheng Lei2 Yan Xin3

Unit： 1.Department of Automotive Engineering Hebei Petroleum University of Technology 2.College of Mechanical Engineering North China University of Science and Technology 3.Department of Chemical Engineering Hebei Petroleum University of Technology

KeyWords： gear disc closed precision forging material filling rules die structure Deform-3D

ClassificationCode：TG316.3；TG315.2

year,vol(issue):pagenumber：2023,48(7):22-28

Abstract：

For the vehicle gear disc, in order to meet the requirements of mass production and achieve the production goals of stability, high quality, high efficiency and low cost, a process scheme of multi-station closed precision forging production was designed. Then, the forming process of gear disc in each stage was simulated by the plastic forming software Deform-3D, and according to the filling rules of material, the defects such as insufficient filling, burrs and folding were found, the causes of the defects were explained. Furthermore, the shapes of upsetting part and pre-forging part were improved, the forming process was optimized, the flow characteristics of metal were changed, and the forming defects were eliminated. Finally, the forging die structure was designed and briefly explained, and the die test and process inspection were carried out through the forging production line to complete the trial production of a small number of gear discs. The results show that the finite element analysis can provide better theoretical guidance for the actual production. The obtained gear disc is fully filled, free of burrs, cracks and other defects, and has high dimensional accuracy. The improved process has achieved the expected effect.

Funds：

河北省高等学校科学技术研究重点项目（ZD2016113）

作者简介：高亚男（1982-），男，博士，副教授 E-mail：gaoyanan1982@126.com 通信作者：闫欣（1987-），男，硕士，讲师 E-mail：yanxinhuo@163.com

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