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The short life of the flexible wheel places high demands on the material and processing of the flexible wheel. The application of rolling friction pairs in mechanical components has greatly inspired the transmission workers. Many scholars have been researching and researching for many years, the most effective of which are RV transmission and movable tooth transmission. Motor type test RV transmission overcomes the shortcomings of cycloidal pinwheel transmission and has been applied in foreign countries.
The domestic research is more on the movable tooth transmission, the movable tooth transmission uses the steel ball as the key component of the meshing, and the force of the steel ball is better. However, the steel ball in the movable tooth transmission is not in the pure rolling engagement state, and the distance between the steel balls is constantly changing in the transmission, which is a variable pitch transmission.
Since the meshing pair operates in a sliding state, the transmission efficiency is not ideal. At the same time, because there is a cage or a movable toothed disc in the transmission, the wall thickness is very thin at large speed ratio, and the strength is obviously insufficient. The solid gear curve in the transmission is difficult to process with special curves. A rolling meshing shifting mechanism utilizing a steel ball and a set of inner and outer cycloidal raceways, Yucai has high meshing rigidity. The steel ball is in a good condition, the meshing is mainly rolling, the transmission efficiency is high, and the transmission can be achieved by pre-tightening the transmission to achieve high transmission accuracy.
High requirements for the material and processing of the flexible wheel