The change of input speed is directly reflected in the dimensionless meshing frequency ω H changes. The dynamic load coefficient of spiral bevel gear transmission varies with dimensionless meshing frequency ω The change of H is shown in Figure 1. It can be seen from Figure 1 that the dynamic load coefficient of spiral bevel gear transmission changes significantly with the change of dimensionless meshing frequency. In order to more intuitively reflect the influence of input speed on the dynamic load performance of spiral bevel gear transmission, introduce (CD) max to represent the amplitude of dynamic load coefficient of spiral bevel gear transmission. The variation of dynamic load coefficient amplitude (CD) max of spiral bevel gear transmission with dimensionless meshing frequency h is shown in Figure 2.
It can be seen from Figure 2 that the change of input speed has a great influence on the amplitude (CD) max of dynamic load coefficient of spiral bevel gear transmission. When the rotating speed is small and the dimensionless frequency is small, the dynamic load coefficient of spiral bevel gear transmission basically remains and increases with the increase of rotating speed; When the dimensionless frequency is ω When h = 0.37, the dynamic load coefficient amplitude (CD) max of spiral bevel gear transmission reaches a peak; As the speed continues to increase, the value of (CD) max begins to decrease when ω When h = 0.5, (CD) max will have a small peak, and then the dynamic load coefficient of spiral bevel gear transmission will maintain a steady upward trend in a certain range.
Comparing the dimensionless meshing frequency at the peak value of (CD) max with the dimensionless meshing frequency corresponding to the natural frequency of the system, it can be seen that the maximum value of the amplitude (CD) max of the dynamic load coefficient of spiral bevel gear transmission appears at the first natural frequency (at this time) ω H = 0.3766).