Abstract: According to the transmission structure and principle of two-tooth difference swing-rod movable teeth transmission
the theoretical and actual profile equation of central wheel was derived according to the engagement theory of two-tooth difference swing-rod movable teeth transmission and the tooth profile is simulated using MATLAB software.The effects of parameters
such as the transmission ratio
radius of movable tooth
length of swing-rod and the cam profile
on the tooth profile of the centeral wheel is analyzed. Formulas for calculating curvature and curvature radius of the central wheel are deduced and its variation curve was plotted respectively. The solid model of centeral wheel is established in Pro/E software and the curvature distribution characteristics is simulated using the Pro/E software.The research result can be used as the references for geometrical design of this type of geometric design and accuracy analysis.