Method of reducing gear noise of planetary reducer

Reducing the gear transmission noise during the operation of planetary reducers has become an important research topic in the industry. Many scholars at home and abroad regard the changes in gear tooth meshing stiffness in gear transmission as the main factors affecting the dynamic load, vibration, and noise of planetary reducers. By using the method of shape modification, the planetary deceleration maneuver load and speed fluctuations are minimized to achieve the goal of reducing noise. This method has been proven to be a more effective method in practice. However, using this method requires shaping equipment in the process, which is often impossible for large, medium, and small factories to implement.

By optimizing gear parameters, such as modification coefficient, tooth height coefficient, pressure angle and Centre-to-centre distance, the meshing impact speed is minimized, and the ratio of meshing impact speed to meshing impact speed is within a certain value range. Gear design methods that reduce or avoid meshing pitch circle impact can also significantly reduce gear noise of reducer.

Using precision grinding gears, the tooth surface is smooth, with high accuracy, smooth operation of the gears and low noise. The selected artificial Synthetic oil is used. The unusual planetary reducer uses grease for lubrication with good fluidity. The gear can operate under full oil film protection to reduce noise.