Parametric Design And Software Development Of Cycloidal Drive

Cycloidal drive has lots of advantages, such as small in size, high transmission ratio, high capacity and high transmission efficiency and so on, which make it possible to be widely used in many fields. On the basis of intensive studies on the works about cycloidal drive, this paper describes the principles of cycloidal drive and the formation principles of the tooth profile of cycloidal gear, and presents the standard equation of cycloidal gear tooth profile, the general equation of cycloidal gear tooth profile, and the common methods of the tooth profile modification of cycloidal gear. The author discusses the best method of the tooth profile modification of cycloidal gear, calculates the best value of the cycloidal gear tooth profile modification and the maximum meshing force between the cycloidal gear and pin wheel, and obtains the rough computing formula of the best value of the cycloidal gear tooth profile modification. It is conclude that the range of cycloidal gear operating tooth profile has less influence over the best value of the cycloidal gear tooth profile modification. The parametric design software which could be used both two teeth difference and one tooth difference has been developed. The software also can be used to calculate the best value of the cycloidal gear tooth profile modification and draw the cycloidal gear tooth profile. The accuracy and reliability of the software are verified by the design and dynamic simulation of an instance. The author establishes the simplified cycloidal drive model and obtains the dynamic meshing force with friction through the dynamic simulation of cycloidal drive. Compared with the standard cycloidal drive, it is conclude that the meshing force between the standard cycloidal gear and pin wheel from dynamic simulation is roughly as same as from theoretical calculation while the meshing force between the profile modification cycloidal gear and pin wheel from dynamic simulation is a little bigger than from theoretical calculation. The conclusion from this paper takes a reference for the analysis of force on engineering.