Transactions of Materials and Heat Treatment

Title：Profile modification of cavity die and the electrode design for precision bevel gear in cold closed-forging process

Authors： LIN Xue ZHANG Yao-zong FANG Quan-shui WANG Hai-ping(School of Material Science and Engineering He'nan University of Science and Technology Luoyang He'nan 471003 China)

Unit：

KeyWords： numerical simulation bevel gear elastic expansion spring-back

ClassificationCode：TG316

year,vol(issue):pagenumber：2006,31(6):80-84

Abstract：

Elastic deflection is an important factor to influence the accuracy of the formed component in precision forming.In this paper,the forming of bevel gear cold closed-forging process is represented by means of numerical simulation method.It disclosed,in the work state of having shrink ring,the variable law of die elastic expansion and gear spring-back when mould unloading.According to the simulation result,the gear tooth shape curves during the mould expansion and the gear elastic recovery are plotted respectively.Quantitatively analyzing the effect of two to the profile of tooth, the inversing compensation method is then put forward to modify the die cavity and the electrode is designed.The conclusion is valuable for improving the gear accuracy.

Funds：

河南省科技攻关项目(042400101)

Reference：

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