Double helical synchronous belt drives is a new breakthrough in the structure

which has both straight tooth belt and helical tooth belt’s advantages.We establish a pair of double helical synchronous belt and pulley completely meshing three-dimensional model through Pro/E

using ANSYS to process a static nonlinear contact analysis

the results show that: with the helix angle increases

the maximum equivalent stress of teeth and the powerful layer both decrease.Through the dynamic simulation of loading process

the top of belt teeth and alveolar of pulley teeth contact to reduce the stress concentration of belt teeth root

indicating that the tooth profile design of double helical synchronous belt and pulley is more reasonable.