How to deal with the noise problem of planetary reducers

1. Increase the helix angle of the driving gear appropriately. As the helix angle increases, the overlap of gears also increases, which greatly reduces noise. It should be noted that the appropriate helix angle needs to be selected.

2. Increasing the width of the driven gear tooth surface: Increasing the width of the tooth surface 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 improve 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 relatively low, so the gear backlash can be appropriately reduced to reduce the 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 conditions of gear strength design, high damping cast iron or certain non-metallic materials can be selected for gear processing, or non-metallic materials can be coated on the tooth surface for treatment. Due to the good plasticity and toughness of materials, noise can be effectively reduced by reducing vibration and impact.

6. Improving the lubrication conditions of gears: Proper lubrication methods and lubricants should be selected based on the circumferential speed of the gears to effectively reduce noise. Pay attention to the combination of lubrication and circulating oil lubrication.

7. Reasonable design of gearbox box structure: A reasonable gearbox structure can improve the sealing performance of the gearbox, making it have good noise reduction effects. 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.