人字齿轮小轮轴向窜动的多目标复合修形优化

To improve the tooth surface bias load and vibration of double helical gear caused by the incomplete symmetrical load on the left and right tooth flanks, the influence of the pinion axial fixing and floating of the double helical gear on the load distribution of the tooth surface is researched, and a compound modification design method of the double helical gear is proposed. According to the partial load of the tooth surface, a longitudinal compensation modification optimization is applied to realize uniform distribution of the load on the left and right tooth flanks. On the basis of longitudinal compensation modification, the compound modified tooth flank is constructed by superposition topology modification, and the topological modification values are determined by applying NSGA-II algorithm to optimize the amplitude of loaded transmission error (ALTE) and tooth surface flash temperature. The results show that the loads of the left and right helical gears can be basically equal through pinion axial floating, but the condition of single helical gear tooth surface bias load cannot be completely improved. The load on each helical gear tooth surface can be evenly distributed after the longitudinal compensation modification. The compound modification improves the load distribution on the tooth surface, avoids the edge contact, and greatly reduces the ALTE and tooth surface flash temperature.