Abstract
This study presents the results of detailed wear process examination on polyformaldehyde gears under both dry and lubricated conditions. A multi-purpose durability test rig was employed to study the wear performance of polyformaldehyde gear pairs. The wear behaviors of polyformaldehyde gears under dry and oil-lubricated operating conditions were characterized via measurements of gear tooth surface micro-topography and tooth profile deviation. Under the dry running condition, a hump and a gully appear on the tooth surface in the pitch line area of the driving gear and the driven wheel, respectively. The largest amount of wear was observed around the tooth root of the driving gear. However, the gear tooth wear pattern with lubrication is different from that under the dry running condition.
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The study was supported by the National Key R&D Program of China (Grant No. 2018YFB2001300) and the National Natural Science Foundation of China (Grant Nos. U1864210 and 51975063).
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Guoda YU. He has been studying as a master student in the State Key Laboratory Mechanical Transmissions, Chongqing University, China, since 2018. His research interest includes the failure mechanism, loading capacity, and optimization of polymer and composite gears.
Huaiju LIU. He is currently working as an associate professor in the State Key Laboratory of Mechanical Transmissions, Chongqing University, China. He received his Ph.D. degree from the University of Warwick, UK, in 2013. His research fields include tribology and fatigue behaviors of mechanical elements.
Ken MAO. He is an associate professor in the School of Engineering, University of Warwick, UK. He received the Ph.D. degree from Birmingham University, UK. His research interest includes polymer composite gears and lightweight gearbox design for electric vehicle, E-bike, motorcycle, and healthcare applications.
Caichao ZHU. He is a professor in the State Key Laboratory of Mechanical Transmissions, Chongqing University, China. He received his Ph.D. degree from Chongqing University, China, in 1998. His research mainly relates to the intelligent design and dynamic analysis of transmission systems.
Zehua LU. He has been studying as a master student in the State Key Laboratory Mechanical Transmissions, Chongqing University, China, since 2018. His research interest includes failure mechanism, fatigue life, and optimization of polymer and composite gears.
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Yu, G., Liu, H., Mao, K. et al. Examination on the wear process of polyformaldehyde gears under dry and lubricated conditions. Friction 9, 538–550 (2021). https://doi.org/10.1007/s40544-020-0362-7
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DOI: https://doi.org/10.1007/s40544-020-0362-7