Summary:...
The noise of the
planetary gear reducer is mainly due to the friction, vibration and collision of the driving gear in the reduction gearbox and the concentricity of the motor shaft. How to effectively reduce and reduce the noise to make it more environmentally friendly.
In gear drive products, how to reduce the gear drive noise during the operation of the reduction gearbox has become an important research topic in the industry. Many foreign scholars regard the change of gear tooth meshing stiffness in gear drive as the main factor of gear dynamic load, vibration and noise. Many manufacturers use the method of modification to minimize the dynamic load and speed fluctuation to achieve the purpose of reducing noise. This method has proved to be a more effective method in practice. However, with this method, it is necessary to have reshaping equipment in the process, which is often impossible for the majority of medium and small factories to implement.
By optimizing gear parameters, such as displacement coefficient, tooth coefficient, pressure angle, and center distance, the meshing impact speed is reduced to a minimum, and the ratio of the meshing impact speed to the meshing impact speed is within a certain range of values. The gear design method of circular impact can also significantly reduce the gear noise of the reducer. According to such methods, low-noise planetary gear reducers, planetary gearboxes and other gear drive products are developed and produced.
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