Increase the speed offrom 25rad / s to 35rad / s, and keep the torque unchanged. Using the same method as in the analysis of ANSYS / workbench calculation results, the following results can be obtained: the variation law of the equivalent stress and time in the meshing process of , the cloud diagram of the equivalent stress of helical gears, and the distribution of contact pressure.
2.Variation law of equivalent stress and time during helical gear meshing
Fig. 1 is the history curve of the dynamic contact equivalent stress of the helical gear with time. It can be seen that the maximum contact equivalent stress of the helical gear is small when the speed of the helical gear slowly rises at the beginning, and the operation is relatively stable without large fluctuations. At 0.025s, the speed of the helical gear reaches the maximum, and the contact equivalent stress of the helical gear also rises to close to the maximum value. As the helical gear continues to operate, the helical gear maintains the speed and applied torque, the helical gear basically operates smoothly, and the maximum contact equivalent stress does not fluctuate greatly. The trend of the maximum stress curve is almost consistent with that at 25rad / s, but the maximum stress value of the helical gear has also increased, reaching 206.34mpa. It can be concluded that the increase of the speed has a significant impact on the maximum contact stress of the helical gear. When the torque is certain, the higher the speed, the greater the contact stress of the helical gear.
2.Equivalent stress nephogram of helical gear at 0.115s
Figure 2 shows the equivalent stress nephogram of helical gear at 0.115s.