Obtaining the change law of loaded contact b ehavior with tooth geometry parameters, supporting stiffness and working conditi on, an active design method is put forward that can be used to design spiral bev el gears with the best loaded contact behavior.

• 将啮合点弹性变形分解为支承变形、轮体变形和接触变形 ,获得了变形前后齿面几何量的变化规律以及两弹性点共轭齿面间的接触条件。