Computer Simulation Technology of Lapping Process for Polycrystalline Diamond

To raise the polishing efficiency of polycrystalline diamond (PCD) superhard material, crank rocker arm mechanism has been developed by using computer simulation technology. On the basis of kinematics and geometry principle, the mathematical model for the crank rocker arm mechanism was established. The movement path and the instantaneous speed of the workpiece center point on the crank rocker arm were derived. The computer dynamic simulation software was developed and the path curve and instantaneous speed have been figured. Before the crank rocker arm mechanism was applied in the machining process, the effect of the length of varies arms on the path curve and the instantaneous speed has been researched. The optimal parameters combinations which can fulfill the application requirement were found. The optimal mechanism has been applied in the polishing process of polycrystalline diamond. The polishing efficiency is one and a half times higher than conventional method. The application of computer simulation software provides a simple and effective method for designing or optimizing the machine.