Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 03, 2023 - September 06, 2023
In order to reduce the noise of the spur gear pump, the authors have designed a modified tooth profile to reduce the meshing noise of the gears. The calculation program had created to find the optimum or suitable tooth profile modification. This program calculates the tooth root stress waveform with using the load meshing theory of gears. Then the program calculates differential of tooth root stress to evaluate its smoothness. The program repeats the calculation for various tooth profile modification shapes to find the modification design that achieves the smoothest root stress waveform, because it was presumed that the gear meshing noise was caused by abrupt changes in the root bending stress. In this calculation, constraints on machining of gears and limits on contact ratio were also considered. After the calculation, the suitable tooth profile modification was designed. Then the test gears were produced to verify the effect by the tooth profile modification to reduce noise. Finally, test gear pump with modified gears was driven, and its noise reduction effect was confirmed.
