(一)What is the effect of the tooth design of rubber synchronous belt on transmission efficiency?- Jiangxi Kangqi Industrial Co., Ltd

(一)What is the effect of the tooth design of rubber synchronous belt on transmission efficiency?

1. Tooth shape and meshing characteristics of rubber synchronous

Trapezoidal teeth: The tooth root is trapezoidal. When meshing, the stress is concentrated at the tooth root, which is easy to cause local deformation. Especially in high-speed or small pulley situations, tooth shape deformation will reduce the meshing accuracy, cause sliding or vibration, and cause energy loss.
Efficiency impact: The transmission efficiency of trapezoidal teeth is about 95%-98%, but when the load is too high or high-speed transmission, tooth shape deformation may reduce efficiency.

Circular arc teeth: The tooth surface is designed with circular arc or involute. When meshing, the stress distribution is uniform, the contact area is larger, and local wear and impact are reduced. The meshing trajectory of circular arc teeth is smoother, which can reduce the polygon effect and improve transmission stability.
Efficiency impact: The transmission efficiency of circular arc teeth can reach 98%-99%, and the advantage is more obvious in high-speed operation.

2. The influence of tooth shape parameters of rubber synchronous on efficiency

Smaller pitch (such as 3M, 5M) can increase the meshing frequency and reduce the single tooth load, but too small pitch may reduce efficiency due to increased friction between teeth.
A larger tooth height (such as H type) can increase the contact area, but too high a tooth height will increase the sliding friction during meshing. Arc teeth can reduce stress concentration, extend life and maintain stable efficiency by optimizing the root fillet radius. Chamfering or shaping the tooth top can reduce meshing impact, reduce noise and vibration, and indirectly improve energy transfer efficiency.

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