歯形修整形状と平歯車ポンプの騒音特性の関係

抄録

Gear pumps have a simple and sturdy structure, are relatively small, can obtain high head, and can transport fluids with a wide range of viscosities. However, it is said that gear pumps have a problem of noise matter. Therefore, in order to reduce the noise of spur gear pumps, the study was started. Firstly, the parts that were the sources of noise were identified in past reports. Then, a suitable design for the tooth profile modification shape of the gear was carried out. In this report, the test gear with tooth profile modification was installed in a gear pump and conducted an operational test to examine how the noise characteristics change due to tooth profile modification. As a result of driving test, it was found that the noise level was significantly reduced when the meshing vibration and natural vibration resonated.