Synchronous belt wheel at the same time has belt drive, chain drive and gear drive common characteristic. Therefore, used in a very wide range of mechanical engineering, project expanding.

　　Due to belt drive is to transmit motion and force through engagement with the teeth of the toothed and therefore improve the existing tooth and development studies for the new tooth, has been the focus of scholars at home and abroad.

　　According to synchronous belt wheel classification, people are trying to use modern computer almost the segment, through simulation of the timing belt drive system technology, verify that the new toothed belt drive structural design parameters i1 accuracy, thereby reducing duplication new toothed belt drive the development process trial production, reduce costs, improve efficiency of new flattened arc tooth belt tooth parameters, the optimized tooth height, improving the structure of the addendum and other methods, for new high-toothed belt drive are engaged with the principles of the analysis and calculation tears L simulation results show that the theoretical analysis is correct, the structural parameters is feasible.