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Zhejiang Machinery and Electrical Group

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Design and noise test of reducer gear spokes
Published:2023-02-15 author:ZHOU Ying-chun, HU Di, LIU Xiang-huan, et al. Browse: 431 Check PDF documents
Design and noise test of reducer gear spokes

ZHOU Ying-chun, HU Di, LIU Xiang-huan, YUAN Zhong-mou

(Zhuzhou Gear Co.,Ltd., Zhuzhou 412000, China)

Abstract: Aiming at the influence of gear body and unbalance on noise, a reducer was taken as the research object, the relevant structural analysis and calculation were carried out, and noise test of different scheme were carried out for comparison. Firstly, modal analysiswas carried out by finite element method, and two kinds of gear body of first stage driven gear was determined. Then, the noise performance was analyzed by MASTA software, smaller peak to peak of transmission error and smaller dynamic meshing force was obtained, then the optimized gear body was determined. The dynamic model of rotor shaftgear was established by considering the difference of unbalance of specialshaped gear body. The inertia force and excitation were analyzed, and the response of different unbalance was obtained. Finally, the bench test was carried out for verify design. The results indicate that the noise of the specialshaped gear body is more than 5dB lower than that of the traditional structure when reducer works above 8000r/min. When the unbalance is less than 9.29g, the statistical result of noise test is that the P value is greater than 0.05, this indicating that the unbalance has no significant influence on the reducers noise within this range.

Key words: speed transmission; gear spoke structure; unbalance; modal analysis; noise reduction; dynamic model of gear shaft; vibration system

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