Effects of gear trimming on transmission error of a helical gear pair

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Journal of Vibration and Shock ›› 2018, Vol. 37 ›› Issue (2) : 254-260.

WANG Jian1，ZHANG Jun2

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Abstract

Gear trimming can improve contact load distribution on gear teeth surface and reduce transmission error. It is an important measure to reduce a transmission system’s vibration and noise. To clarify the mapping relationship between gear trimming parameters and transmission error has very important theoretical and engineering significances for guiding gear trimming and improving transmission performance. As a gear transmission system has a very complex nonlinearity, however, it is difficult to derive an analytical expression for the above mapping relationship. Here, taking a helical gear pair as a study object, taking tooth profile modification and tooth direction one as arguments or parameters, the relation function between gear trimming and dynamic transmission error fluctuation was fitted with the response surface method and Kriging method, respectively. Then gear trimming parameters were further optimized. The simulation results based on Romax were taken as a benchmark, accuracies of the two fitting methods were compared. The results showed that Kriging method has a higher accuracy to fit the relation between gear trimming and dynamic transmission error fluctuation than the response surface one does; the tooth direction modification has a larger influence on the dynamic transmission error fluctuation than the tooth profile one does.

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gear modification / transmission error / response surface method / Kriging method.

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WANG Jian1，ZHANG Jun2. Effects of gear trimming on transmission error of a helical gear pair[J]. Journal of Vibration and Shock, 2018, 37(2): 254-260

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