Frequency domain characteristics of tooth profile error
The tooth profile error mainly acts on the gear meshing frequency energy, and the energy analysis can also be compared through time domain and frequency domain. Since the energy growth in time domain is only the linear growth of amplitude, there is no fluctuation in waveform. Therefore, taking a bevel gear pair as an example, the frequency domain comparison of two cases with low and serious tooth profile error is given, as shown in Fig.
Vibration characteristics of bump
The impact problem is similar to the single tooth pitch error. In the process of gear operation, there is a time-domain pulse problem at the local corner position, but this kind of impact energy is weak. Only in the process of low speed and no-load running in of axle, slight instantaneous impact signal can be seen.