By the support of National Nature Science Foundation, some key problems of CVT were investigated, and some useful results were obtained as follows:
(1) The relations between metal-belt misalignment in axial direction and transmission parameters were studied. By designing curved generating line pulley or adjusting the axial displacement of pulley, the degree of misalignment of the metal belt was decreaed.
(2) Mechanics model of multi-layers metal ring and the model of transmi...