面齿轮传动啮合刚度分析与修形减振优化

To accurately calculate meshing stiffness of face-gear drives, comprehensively considering effects of profile-shift, pinion offset, tooth surface modification and misalignment, a method for calculating meshing stiffness of face-gear drives was proposed based on the loaded tooth contact analysis (LTCA) technique of gears. The accuracy of the proposed method was verified. The effects of load, profile-shift, pinion offset and misalignment on the mean value and amplitude fluctuation of comprehensive meshing stiffness of face-gear drives were analyzed. Combining the LTCA technique with the genetic algorithm, an optimization model of vibration reduction and modification for face-gear drives was established. The results showed that the amplitude fluctuation of the comprehensive meshing stiffness of face-gear drives is larger, and there is a step abrupt change phenomenon; the amplitude fluctuation is not sensitive to load, pinion offset and misalignment, but these 3 factors significantly affect the mean value of the comprehensive meshing stiffness; in 3 types of misalignment, shaft angle error has the largest effect on the mean value of the comprehensive meshing stiffness; after optimizing pinion modification parameters, the amplitude fluctuation of the comprehensive meshing stiffness decreases by 91% to effectively reduce vibration and noise of face-gear drives.