Manufacture of elastic composite ring for planetary traction drive with silicon rubber and carbon fiber

distribution by the planet gear and compaction in designing driving system. However there is noise in running at high r.p.m, so the use of planetary gear system is restricted in quiet place such as indoors, etc. If following problems are solved such as low transmission torque that resulted from the slip and the deformation by the heat generated between ring and planet roller, planet roller and sun roller, the planetary traction drive will have not only the advantage of planetary gear speed reducer, but also silence in running. Thus it can be used at the high r.p.m in noise control area. In this paper, speed reducer, which uses the elastic displacement of ring as preload, was developed. This system uses composite, which has superior elastic absorption and heat transfer property between ring and housing to exclude the effect of heat from the periodic and continuous elastic deformation of ring. This composite consists of silicon rubber and carbon fiber in a ratio of 7:3. Keywords