Noise reduction of planetary gear transmission system

Planetary gear train is an important gear transmission mechanism, which has the advantages of compact structure, small volume, light weight, strong bearing capacity and large power transmission range. It has been widely used in machinery manufacturing, aerospace, automobile and ship, engineering machinery and other industries.

However, the design of planetary gear train is a complex problem, with many calculation parameters and cumbersome calculation process. The optimal solution may be missed due to the limited number of calculations, and it is easy to ignore some design criteria and requirements according to the gear design manual, which makes the whole planetary gear train transmission difficult to achieve the expected performance indexes, resulting in vibration and noise problems in the transmission process.

Given the specific parameters of a certain type of planetary reducer, through calculation and analysis, it is found that this type of reducer does not meet the constraints in the basic constraints required by the design of planetary reducer. There is a common divisor between the number of meshing teeth, and the number of sun teeth is an integral multiple of the number of planetary gears, which is bound to affect the stability of the operation of the whole gear train and lead to a certain degree of noise problem. In view of the above problems, this paper uses kissoft software to simulate and analyze the influence of the relationship between the number of teeth on the transmission performance, as well as the influence of different components as the input end on the transmission system performance under the same parameters. Taking the transmission error, tooth surface load distribution and contact spots as the basis to judge the transmission accuracy of planetary gear train, the optimal design parameters are obtained, which provides a certain theoretical method and basis for the design of involute planetary gear reducer.

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