The greatest innovation is to put forward a new idea of helical gear optimization and modification, which can help the development of new energy vehicle industry and provide reference for relevant engineers. However, with the development of helical gear modification technology, the conventional experience modification scheme can no longer meet people’s requirements for high-performance gears. In view of the feedback from an enterprise engineer, the vibration noise performance and service life of the existing helical gear products have declined on the contrary. Therefore, based on the previous simulation analysis, this chapter reveals the reasons behind this phenomenon from the perspective of vibration excitation of helical gear pair, relying on the tooth surface contact spot test and noise bench test.
According to the phenomenon that the vibration noise and wear resistance of the helical gear by-product are aggravated and the wear resistance is reduced after the profile modification of a certain enterprise’s experience, through a series of simulations and combined with the tooth surface contact spot test and noise bench test, while verifying the validity of the simulation results, the reasons behind this phenomenon are analyzed in depth.
Blind experience modification will increase the transmission error of helical gear pair, Hertz contact stress, time-varying meshing force, and make the fluctuation range of time-varying meshing stiffness larger, resulting in serious consequences such as increased vibration and noise of helical gear, serious tooth surface wear, and shortened service life.