What are the noise reduction measures for planetary gear reducers?

1. Appropriately increase the helix angle of the driving gear. As the helix angle increases, the overlap of gears will also increase, which will greatly reduce noise. It is important to choose the appropriate helix angle.
2. Increasing the tooth surface width of the driven gear: Increasing the tooth surface width will also improve the meshing degree of the gear, enhance the relative smoothness, and improve the noise reduction effect.
3. Improving gear accuracy: Improving gear accuracy will greatly enhance the surface roughness of gears, thereby improving gear motion accuracy and effectively reducing noise.
4. Reasonable selection of tooth surface hardness and gear backlash: When the gear backlash is less than 0.04 mm, the noise is lower, so the gear backlash can be appropriately reduced to reduce noise. In addition, when the hardness of the driving gear is 2-3HBC higher than that of the driven gear, it can effectively reduce noise.
5. For special treatment of tooth surfaces: Under the condition of gear strength design, high damping cast iron or certain non-metallic materials can be used to process gears, or non-metallic materials can be coated on the tooth surface for treatment. Due to the good plasticity and toughness of the material, noise can be effectively reduced by reducing vibration and impact.
6. Improving the lubrication conditions of gears: The lubrication of gears should be based on the appropriate lubrication method and lubricant selected according to the circumferential speed of the gear, in order to effectively reduce noise. Attention should be paid to combining lubrication with circulating oil lubrication.
7. Reasonable design of gearbox body structure: A reasonable gearbox structure can improve the sealing performance of the gearbox, making it have good noise reduction effect. In case of high noise requirements, damping materials such as foam plastic can be placed on the surface of the box to reduce the noise of the reducer.