分析了多个与齿轮相关及摩擦相关模型,推导建立了计算雏齿轮啮合过程中瞬时滑动功率损失的时变模型.基于锥齿轮传动过程中实际啮合齿数,分析锥齿轮啮合面的受力情况,将此受力分析结果与实际工况下轮齿油膜厚度比相结合,得到了锥齿轮传动过程中各润滑状态与各摩擦功率损失影响因素的关系.为了避免将啮合线离散计算摩擦功率损失时所导致的原理误差,建立了以时间为变量的锥齿轮摩擦功耗的数学模型.利用时变齿间载荷模型解决了由齿面几何复杂度导致的齿间载荷难以确定这一难题.仿真结果表明:瞬时滑动功率损失时变模型的仿真结果与实验测得真实结果相一致,所建锥齿轮啮合过程中瞬时滑动功率损失时变模型具有较高的精度.%By analyzing lots of gear-related and friction-related models,a computational model was proposed for the prediction of friction-related mechanical efficiency losses.Combined the force on the gear face,which was acquired by an analysis of engaged tooth,with the film thickness ratio under different lubrication condititon,the relation between different lubrication conditions and efficiency losses-related factors was obtained.Developed a mathematical model of bevel gear friction-related mechanical efficiency losses,which is a function of time.Through this model,the principle error caused by discrete mesh line based efficacy calculation method can be avoided.A time-varyingtooth load model solved the tough problem of tooth load which isdifficult to be determined.The simulation results show that the proposed model results are identical to the real experiment results,which means that the proposed instantaneous sliding efficiency losses model has high model accuracy.
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