Abstract
Spur gears are an important transmission part used widely in many industries. Precision forging of spur gears has a lot of advantages compared with the conventional mechanical cutting method. However, it is very difficult to fill the corner well and the forging load is also very large, especially in the final forming stage during the precision forging of spur gears. So, a three-dimensional (3D) finite element (FE) model for precision forging of spur gears was built by DEFORM-3D software. The stress and strain states in different forming stages and positions of billet have been studied. Also, the Lode parameter μσ was calculated, and the metal flow line method was used to reveal the deformation mechanism of the tooth material. Results show that the Lode parameter of the tooth shape is negative at the beginning of the tooth filling and is positive at the final stage of the tooth filling. Also, the stress state changes from two-directional compressive stress and one-directional tensile stress to three-directional compressive stress.
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Acknowledgments
The authors would like to thank the National Natural Science Foundation of China (51475344), 111 Project (B17034), and Innovative Research Team Development Program of the Ministry of Education of China (IRT13087) for the support given to this research.
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Feng, W., Feng, Z., Zhou, M., Mao, L., Jia, X. (2021). Deformation Mechanism of the Tooth Material Filling for Precision Forging of Spur Gears. In: Daehn, G., Cao, J., Kinsey, B., Tekkaya, E., Vivek, A., Yoshida, Y. (eds) Forming the Future. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-75381-8_90
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DOI: https://doi.org/10.1007/978-3-030-75381-8_90
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