Abstract
Abstract Nowdays reduction of gear noise in power transmission is very important, because the noise regulation is severe and demand of customer on noise is increased. To reduce gear noise, it is necessary to understand the vibration transmission characteristics of helical gear system. In this work, we designed test rigs for study of vibration transmission characteristics. By using these test rigs, root strain, rotational gear vibration, bearing vibration and sound pressure level are measured under varying rpm and torque. The frequency characteristics of rotational gear vibration and gear noise on the effect of lead error are discussed. Also, the relationship between gear vibration, bearing vibration and sound pressure level is discussed.
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