As shown in the figure, the transmission error curve of helical gear with no modification, no 1 optimization and no 9 optimization can be seen. It can be seen that the transmission error curve of helical gear with optimized modification is more smooth as a whole, and the fluctuation range is 0.319 μ M is reduced to 0.284 respectively μ m、0.293 μ m. The decrease is large.
However, the transmission error curve of the unmodified helical gear has two kinds of sharp undulations, and the impact phenomenon is very serious during meshing. Therefore, it can be considered that the optimized profile modification of helical gears can significantly reduce the impact of gear teeth meshing.