Transactions of Materials and Heat Treatment

Title：Spinning mechanism of thinwalled internal and external toothed parts

Authors：

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KeyWords：

ClassificationCode：TG306

year,vol(issue):pagenumber：2021,46(5):86-93

Abstract：

For the problems of asymmetric tooth profile angle, uneven distribution of tooth sidewall thickness and insufficient filling of tooth tip fillet in the spinning process of internal and external toothed parts, the stress and strain distributions, material deformation characteristics and material flow situations of the thin-walled internal and external toothed parts during the spinning process were studied by combining numerical simulation with forming test, and the forming mechanism was revealed by summarizing the distribution laws of stress and strain and the deformation law of material. The results show that the spinning process of the thin-walled internal and external toothed parts is a composite forming of shear deformation and extrusion, the contact area is in three-dimensional stress state, the stable forming areas of internal and external teeth are in the plane strain state, and the mouth skirt and bottom flash are in the compression strain state. Because of the shape characteristics of internal and external teeth, the material deformation during the spinning process has the characteristics of periodicity, non-uniformity and asymmetry, and the whole material flow is consistent with the meshing direction of roller.

Funds：

国家自然科学基金资助项目（51775194）

余林峰（1996-），男，硕士研究生 E-mail：18826076197@163.com 通讯作者：夏琴香（1964-），女，博士，教授 E-mail：meqxxia@scut.edu.cn

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