Transactions of Materials and Heat Treatment

Title：Multi-wheel planetary spinning of thin-wall cup-shaped parts with internal and external teeth

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ClassificationCode：TG376

year,vol(issue):pagenumber：2020,45(4):126-133

Abstract：

In view of the problems for low material utilization rate and low mechanical properties in the current process of cup-shaped parts with internal and external teeth, a new forming process method was proposed. The mechanism of this new forming process was studied by combined finite element method with experiment. The spinning forming characteristics of cup-shaped parts with internal and external teeth were analyzed. The distribution laws of residual stress and equivalent strain in the inner tooth, outer tooth and lateral wall regions were studied, and the most vulnerable regions of defects were predicted. The process parameters determined by finite element simulation were used to carry out the process test. The results show that at the initial position of forming, the fracture defect is most likely to occur in the outer tooth area of blank due to the tensile stress, and the outer metal in the inner tooth area is deformed due to the three-direction tensile stress which is another main location where the crack defect occurs. The deformations of the inner and outer teeth are periodic in the circumferential direction.

Funds：

吉林省科技发展计划项目（20170204082G X）；装备预先研究项目（41423030613）

黄涛（1982-），男，硕士，副研究员 E-mail：13843082365@163.com 通讯作者：郭亚明（1988-），男，博士，工程师 E-mail：18744026909@163.com

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