采用陶瓷球的密珠摆线减速器设计与实验研究

为了提高摆线球齿传动的精度和传动刚度 ,研制了一种新型的摆线球齿传动。该传动采用了密珠齿轮 ,为获得更好的工作性能 ,其中的滚珠采用了陶瓷球。此外还研制了简单综合方法用于确定滚道型面并计算了摆线滚道与球齿的接触应力。采用了计算机辅助程序优化设计该传动。研究包含以下内容 :(1)滚道几何形状的研究 ;(2 )完成了对滚道曲率的分析 ,进一步提出了对滚道的修形 ;(3)对接触应力的评估 ;(4)研究了陶瓷滚珠在密珠摆线减速器中的工作性能。采用上述理论研制的减速器样机进行试验研究 ,结果表明这种减速器具有很高的传动精度和刚度。新研制的采用陶瓷球的密珠摆线减速器的实验结果表明 ,传动功率提高了 5 0 %以上。

Study and Performance Test of Full Complement Cycloidal Ball Reducer with Ceramic Balls as its Gear Teeth

To improve the transmission accuracy and stiffness of the ball cycloid reducer, the authors developed a novel cycloid ball reducer, which uses a full complement ball as its gear teeth. Ceramic balls are used to get better performance in severe working conditions. A simple synthesis method was also found to determine the raceway forms and compute the contact forces among the balls and raceways. The Contact Stress Analysis (CSA) computer program was used to optimize the design of the reducer. In this paper, the following topics are covered: (1) Study of the geometry of the raceways. (2) Analyses of the principal curvature of the raceways are also accomplished. In addition, the modification of the raceway is put forward. (3) The contact forces and the reducer efficiency are evaluated. (4) Study of the performance of ceramic balls used in the CBR. A reducer using the above design technique was tested and the performances show that the reducer has high precision and rigidity. An increase of more than 50 percent transmission power was realized in the new gearing.