Transactions of Materials and Heat Treatment

Title：Influence of roller motion modes on rolling forming of reducer worm

Authors： Yuan Wenjing Xing Ziwen Cao Jianwen Zhang Qi Tian Haobin

Unit： Xi′an Jiaotong University Suzhou Torin Drive Equipment Co. Ltd.

KeyWords： worm rolling forming thermal compression test thermo mechanical coupled numerical simulation roller motion modes

ClassificationCode：TG335.6

year,vol(issue):pagenumber：2017,42(10):106-112

Abstract：

The influences of roller motion modes on rolling forming was studied for reducer worm parts. Firstly, the rolling method of two rollers with parallel axes was designed, and the parameters of roller were determined according to characteristics of the worm part. Then, the thermal compression test of worm material 20CrMnTi steel was carried out under test temperatures of 800, 900 and 1000 ℃ and strain rates of 0.1, 1, 10 and 30 s-1, the stress-strain curves of this material were obtained. Finally, the forming results of two kinds of roller motion modes in the worm rolling process were studied by numerical simulation and verified by experiments. The results show that when two rollers rotate clockwise in a single direction, the axial displacement of workpiece reaches 6.48 mm in the simulation and the axial displacement of experiment workpiece reaches 2.66 mm, and when two rollers rotate clockwise and counterclockwise, the axial displacement vector of workpiece is close to zero. The reciprocating rotation of rollers is benefit to avoid the axial displacement deviation of warm workpiece and ensure rolling successfully.

Funds：

上海第二工业大学2017年度校青年教师培养科研资助项目（2017003）

作者简介：苑文婧（1979-），女，博士，讲师，E-mail：wjyuan@sspu.edu.cn

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