The simulation and modeling function of Pro/E is strong
so it was applied widely in modern design. But Pro/E has its own big lack at the chain drive simulation. It could only do the simulation of the straight line and the circular but it could not solve the simulation of chain-drive curvilinear motion
so the simulation of the irregular chain motion like the bicycle chain could not be reached based on Pro/E in the past. In this article
the simulation of the chain drive motion is studied based on Pro/E and a effective method is proposed.