Research and development of cone to cone type CVT (1st Report, Fundamental structure, speed change mechanism and design of CTC-CVT)

Abstract

Traction drive is a low noise and a low vibration and has the feature of being able to make up a continuously variable transmission(CVT). For the traction drive type CVT, various structures have been developed. But most of traction drive type CVT have complex structure. One of the authors invented a new type of traction drive type CVT. As for this new CVT, the structure is simple, and transfer efficiency is high. This new CVT is called Cone to Cone Type CVT(CTC-CVT). This new CVT is constructed by an input shaft and an output shaft and an intermediate cone. The purpose of this research aimed at practical use of CTC-CVT. In this report, first the structure and the speed changing mechanism of CTC-CVT is examined. Secondly, the contact pressure analysis of the power transmission portion is described. The design and development of proto-type CTC-CVT is examined. Finally, the trial run result of the prototype CTC-CVT is described.