Transactions of Materials and Heat Treatment

Title：Finite element numerical simulation on gear extrusion process for synchronizer tooth sleeve

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KeyWords： tooth sleeve gear extrusion process measurement index tooth profile difference in deformation between teeth tooth surface asymmetry

ClassificationCode：TH48

year,vol(issue):pagenumber：2021,46(6):133-141

Abstract：

For the problems of obvious difference in deformation between gear teeth and general asymmetry of tooth profile on both sides of gear tooth in the process of extruding inverted cone angle for tooth-missing gear sleeve, a process scheme was proposed, which was to reserve half-height teeth at missing teeth part when extruding inverted cone angle, and then remove half-height teeth by the twice drawing spline. Then, forward and reverse gear extrusion processes of tooth sleeves for missing tooth and two kinds of half-height tooth were simulated by the transient dynamic module of software Workbench, and the deformation distribution of gear teeth for three kinds of sleeves and the circumferential deformation of indexing circle tooth profiles on both sides of gear teeth were obtained. Furthermore, the concepts of measurement indexes for difference in deformation between teeth and tooth surface asymmetry were proposed, and the difference degree of deformation on both sides of tooth surfaces and the asymmetry degree of deformation on both sides for three kinds of gear sleeves were compared and analyzed. The results show that when the addendum circle diameter of halfheight tooth is Φ71.0 mm, the average value of tooth profile deformation between the left and right sides of gear tooth is larger than that of the tooth-missing sleeve and the half-height tooth sleeve with the addendum circle diameter of Φ71.5 mm, the deformation difference of the left tooth profile is 2×10-5 mm larger than that of missing tooth sleeve, the deformation difference of the right tooth profile is 7.5×10-4 mm smaller than that of tooth-missing sleeve, and the asymmetry of tooth profile deformation on both sides of tear tooth is 2.76×10-3 mm smaller than that of tooth-missing sleeve.

Funds：

衢州市科技计划指导性项目（2019017）；浙江省高等学校访问工程师校企合作项目(FG2018161）

林钰珍（1984-），女，硕士，副教授 E-mail：lyuz9999@163.com

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