Transactions of Materials and Heat Treatment

Title：Spinning of curvilinear generatrix parts without mandrel based on main and auxiliary rollers

Authors： Zhang Xiaoxin Wang Jin Lu Guodong Wang Yayu

Unit： Zhejiang University

KeyWords： spinning without mandrel main and auxiliary roller spinning end auxiliary support auxiliary roller support composite auxiliary support curvilinear generatrix parts

ClassificationCode：ＴＨ１６２

year,vol(issue):pagenumber：2017,42(10):86-95

Abstract：

Without the limit of mandrel, the spinning without mandrel is suitable to form complex curvilinear generatrix parts. However, it still needs some auxiliary supports to overcome the poor precision of forming shape. For the spinning of curvilinear generatrix parts without mandrel based on main and auxiliary rollers, the spinning effects with or without an end auxiliary support or an auxiliary roller support were analyzed by combining the simulation with experiment method, and the stress, strain, profile shape and wall thickness distribution in the simulation results were discussed respectively. The research results show that the end auxiliary support helps to improve the effect of overall bending deformation, and the auxiliary roller support helps to form sheet metal locally. However, the composite auxiliary support can obtain workpiece that satisfies the forming quality requirement by combining their forming characteristics. In addition, the forming quality is improved by taking variable feeding and twopass spinning with preformed linear shape at the first pass. Thus, the maximum reduction rate and wall thickness uniformity can be obviously improved by combining the above two methods.

Funds：

浙江省自然科学基金资助项目(LY15E050003);中央高校基本科研业务费专项资金资助（2015QNA4003）

作者简介：张晓鑫（1992-），男，硕士研究生，E-mail：939734712@qq.com；通讯作者：王进（1980-），男，博士，副教授，E-mail:dwjcom@zju.edu.cn

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