Dynamic modeling of double helical gears

Abstract

There are few publications on the dynamic model of double helical gears considering axial vibration. In the present dynamic model, it is thought that the axial force of the left and right ends generated by tooth meshing can offset each other. Because of the existence of manufacture and installation, the axial force of the left and right ends cannot completely offset which will cause the axial vibration. In this paper, a dynamic model of double helical gears is proposed. Firstly, the calculated model of axial displacement caused by the errors of manufacture and installation under low speed is proposed. Secondly, the dynamic model of double helical gears considering axial vibration and backlash is built. On this basis, the dynamic equations of this system are established and solved. Finally, a pair of double helical gears is taken as an example. The axial displacement is calculated out and compared with that from the experiment. The dynamic behaviors of double helical gears are studied.