Transactions of Materials and Heat Treatment

Title：Numerical simulation research on accuracy of gear cold forging affected by deformation-induced heating

Authors： WANG Tao LIU Hua SUN Hong-xing LIU Dan WANG Wei-qin

Unit： Zhengzhou Research Institute of Mechanical Engineering

KeyWords： deformation-induced heating cylindrical spur gear cold precision forging numerical simulation elastic deformation

ClassificationCode：TG316

year,vol(issue):pagenumber：2012,37(1):13-16

Abstract：

Under the conditions with or without deformation-induced heating, the numerical simulation analysis of cold-forging precision forming process was conducted for the cylindrical spur gear using rigid-plastic finite element method, and the simulation of the elastic expansion of the die and the elastic recovery of the gear after die unloading were completed. The results of the simulation indicate that deformation-induced heating and heat transfer have a huge impact on the accuracy of gear. The expansion coefficient and elastic modulus are different under the different temperatures. under the condition with deformation-induced heating, the forming force decreases to a certain extent and the quantity of expansion for the die and the elastic recovery of gear increase.

Funds：

“高档数控机床与基础制造装备”科技重大专项（2009ZX04013-032）

Reference：

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