How to design the tooth profile of synchronous belt wheel

With the development of China's economy and the deepening of the market's understanding of the chain transmission mechanism, the design level of the synchronous belt sprocket tooth profile is also constantly improving. China has always used the three-arc straight tooth profile of the former Soviet Union and Europe. Although the transmission performance is better, the design and manufacture are relatively complicated. The chain drive composed of the involute tooth profile with a pressure angle of 30 degrees introduced by American Moss is called HV chain drive and has good high-speed transmission performance. Another remarkable feature is the application of CAD / CAM technology, which directly promotes the development of synchronous pulley technology.

Timing belt sprocket drawing software has entered the market. With these software, as long as the relevant parameters are input, such as the relevant size of the chain, the structure of the timing belt wheel, the number of teeth, etc., the working diagram of the timing belt sprocket can be quickly drawn. Again, the non-circular synchronous pulley technology has been developed and applied. For example, the driving synchronous belt sprocket called ergonomics on the variable speed bicycle is a non-circular synchronous belt wheel. This synchronous belt sprocket helps to reduce the adverse effect on the transmission efficiency of the bicycle driving synchronous belt wheel when the big turn is in the vertical position, and has been widely promoted and applied.