| Continuously Variable Transmission (CVT), as an important part of machine drive, can continuously transform velocity to a certain range along with output rotate speed and changing load. However, current mechanical CVT's drive ratio is smaller than others', planet CVT has to be used, whose structure is complex and volume is large, or a reducer is added for big drive ratio. So how to simplify structure, how to enlarge the drive ratio, the shift gears ratio, becomes one of aims which are pursued by science and technology operator in domestic and overseas machinery field. Comparing with CVT of developed countries, ours is still behindhand. So how to improve drive performance of CVT becomes an important task being resolved urgently.This paper concluded Senior and Other predecessors on the basis of research results. For Nutating Traction CVT. Firstly, the introduction of non-geometry sliding Surface. Traction surface area makes contact with the Surface rational design optimization. Realization of non-sliding geometry. Secondly, make parameters of the process, the calculation of the formula, and other related forms and data packages to the proceedings. According to enter size and load; the process solving the basis of contact regional sizes and shapes, and other related properties, to verify reasonable. Made of contacts and the non-sliding geometry of contact animation to observe the two main components can non-sliding geometry is drive.At the same time, for CVT's transmission structure. Made of parameters of the process, in accordance with procedures call for the calculation of the main dimensions, animated simulation program, dish spring design program, contact stress program, such as the verification process. Formed a relatively complete set of parameters of the design process.Finite element analysis. Using non-linear finite element for the contact stress and Hertz theory based on the results of error of less than 10%. Verify the correctness of the design process and Feasibility. |
