Numerical simulation analysis of cold extrusion forming for bevel gear

PAN Jun1， CHEN Wen-biao2， MENG Bin1， BAO Guan-jun1， Yang Qing-hua1
（1. Key Laboratory of E & M， Ministry of Education & Zhejiang Province， Zhejiang University of Technology，Hangzhou 310014， China；  2. Dongfeng Nissan Diesel Motor Co.， Ltd.， Hangzhou 310015，China）

Abstract： In order to study the cold extrusion forming of the bevel gear，a three-layers assembled cavity die and its technological measures were designed. Numerical simulation of the cold extrusion forming process was applied，its load curve, velocity field，stress field and temperature field were analyzed. After the analysis of numerical simulation，the basic knowledge of the bevel gear deformation was obtained. In order to solve the remaining problems of the current cold extrusion forming，subsequent targets for optimization were introduced. The experiment results show some significance in guiding how to design a die and plan its technological measures.
Key words： cold extrusion forming； die； bevel gear； numerical simulation