Effect of Tooth Lubrication on the Internal Excitation and Dynamic Characteristics of Gear Pairs with Pitch Deviation
To address the unclear excitation mechanism and dynamic evolution of gear pairs with tooth profile deviations in rough meshing interfaces,the mixed elasto-hydrodynamic lubrication model was established considering the micro-topography of gear tooth surface.The coupling relationship and iteration process between tooth profile deviations,lubrication contact states,and time-varying mesh stiffness(TVMS),load distribution were clarified to obtain the film thickness and pressure distribution in the rough meshing interface.Subsequently,a 6-degree-of-freedom gear dynamic model was established to investigate the dynamic evolution of the gear system and understand the ef-fect of gear lubrication on the dynamic characteristics.Results show that gear lubrication can significantly suppress the mesh stiffness impact caused by tooth pitch deviation and reduce the mesh impact force.Meanwhile,the random vibration impact phenomenon of the gear pair is weakened,effectively improving the transmission stability of gear pairs with pitch deviation.This method can effectively predict the vibration characteristics of gear pairs with different precision levels related to pitch deviation,providing theoretical guidance for the dynamic control of the operational performance of gear transmission systems.
万方数据
维普
