The principle of gear noise generation of planetary reducer 2023-02-23
This paper makes an in-depth analysis of the generation principle of the gear noise of the planetary reducer proposed by some new users, and proposes a solution.The principle of gear noise generation of planetary reducer (1) Planetary gears, sun gears and ring gears, high-speed shafts and high-speed quilt moving shaft gears are continuously impacted during the meshing process, causing the gears to generate forced vibration at the meshing frequency.(2) During the rotation of the planetary carrier, due to the eccentric unbalanced force, the gears generate low-frequency vibrations consistent with the rotational speed.(3) When the gear is subjected to the external excitation force, the frequency generated will generate noise during the transient free vibration of the natural frequency of the gear. The natural frequency of the gear is related to the structure and quality of the gear itself.(4) The friction between the teeth will cause the gear to generate self-excited vibration, which will cause friction sound.If the tooth surface is uneven, it will cause periodic impact sound.(5) The precision of each gear has a great influence on the noise.Effect of gear surface roughness on gear noise
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