How to reduce the noise of synchronous timing belts by designing the transmission structure

In modern mechanical transmission systems, Synchronous Timing Belts are widely used in various precision transmission scenarios due to their high efficiency, precision and non-slip characteristics. However, the noise problem in the transmission system has always been an important technical challenge. In order to effectively reduce the noise of the synchronous belt transmission system, the design and optimization of the transmission structure are particularly important.

The optimization of the transmission ratio and the pulley diameter is the key factor affecting the noise of the synchronous belt transmission. By properly adjusting the tooth width and reducing the transmission ratio, the transmission torque can be effectively reduced, thereby reducing the generation of noise. At the same time, increasing the pulley diameter can also effectively reduce the tension of the synchronous belt, further reducing the transmission torque and noise. This is because the increase in the pulley diameter increases the contact area between the belt and the pulley, thereby achieving a smoother meshing and reducing the noise caused by the meshing impact.

The optimization of the tooth shape design also directly affects the generation of noise. The use of a small pitch design can effectively reduce the contact stress of the tooth surface and reduce vibration noise. In addition, by changing the tooth angle to make the tooth surface contact more uniform, the noise can also be significantly reduced. The design of curved teeth or inclined teeth can disperse the contact stress of the tooth surface and reduce the transmission of vibration energy, thereby effectively reducing noise. These tooth design strategies are designed to optimize the meshing process between the belt and the pulley and reduce the noise caused by poor meshing.

When transmitting the same power, the design of using multiple narrow belts instead of a single wide belt can significantly reduce the transmission noise. This is because the meshing points of multiple narrow belts are dispersed, reducing the impact sound caused by single-point meshing. At the same time, the vibration energy of the narrow belt is more easily dispersed and absorbed, thereby reducing the propagation of noise.

The application of non-cylindrical pulleys is also an effective strategy to reduce transmission noise. Compared with traditional cylindrical pulleys, the profile design of non-cylindrical pulleys can more evenly distribute the contact stress of the tooth surface and reduce the noise caused by stress concentration. In addition, non-cylindrical pulleys can improve the meshing state between the belt and the pulley, making the transmission process smoother.

Properly increasing the center distance can also help reduce transmission noise. As the center distance increases, the relative movement between the belt and the pulley becomes smoother, thereby reducing the noise caused by relative movement. At the same time, increasing the center distance can also reduce the tension fluctuation of the belt during the transmission process, further reducing the generation of noise.