关键词: 少齿差传动；轴承技术；空间摩擦副；最优化设计

Abstract:

By considering systematically the merits and drawbacks of driving devices with small tooth number difference,such as planetary reducer and harmonic reducer,combining effectively the new drive style with high precision and efficiency,a precise gear transmission and bearings were integrated as new friction pairs and their basic steady load, friction mechanism and friction moment were also studied herein. By optimizing the double objective function of basic steady load and friction moment,the structural parameters were determined.The material of every unit in the friction pairs was selected.Under this condition, we developed high accuracy, high reliability, long service life and high performance space friction pairs,which can reduce midst links in driving chain and make it a compact system with small volume, high drive efficiency, small friction-wear and low vibration noise.

Key words: fewer teeth difference transmission;bearing technology;space friction pairs;optimization design