Transactions of Materials and Heat Treatment

Title：Numerical simulation of cold precision forging of mold elastic deformation on helical gear

Authors： Wang Feng Feng Wei

Unit： Wuhan University of Technology

KeyWords： helical gear cold precision forging elastic deformation tooth modification mold

ClassificationCode：TG315.2

year,vol(issue):pagenumber：2016,41(8):127-131

Abstract：

The mold elastic deformation in cold precision forging of helical gear was analyzed by mold stress analysis module, and the distribution of die stress was obtained. The amount of elastic deformation and the elastic deformation regularity of the tooth cavity profile at the different positions were carried out combining with the characteristics of tooth die cavity geometry. According to the elastic deformation of tooth cavity profile, the die cavity of tooth was modified by reverse compensation method, and numerical simulation and analysis were conducted again. Furthermore, elastic deformations of tooth before and after correction were compared. Studies are shown that the trends of elastic deformation of the tooth cavity profile at different heights are consistent, but the amounts of elastic deformation in the dedendum, involute and addendum of tooth cavity profile curves are different respectively, which decrease gradually from addendum to dedendum and from the top end face to the lower end face. Thus, the amount of springback of tooth cavity profile reduces after modification, and a method is provided to improve the forming accuracy of helical gear.

Funds：

国家自然科学基金资助项目(51475344)；湖北省自然科学基金资助项目（2014CFB855）

王峰（1990-），男，硕士研究生冯玮（1973－），女，博士，副教授

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