Ease-off拓扑修形斜齿轮齿面黏着磨损计算方法  

Ease-off surface topological modification of helical gear tooth surface calculation method of adhesive wear

作　　者：王永强 魏冰阳[1] 谢学凯 李家琦 WANG Yongqiang;WEI Bingyang;XIE Xuekai;LI Jiaqi(School of Mechatronics Engineering,Henan University of Science and Technology,Luoyang Henan 471003,China)

机构地区：[1]河南科技大学机电工程学院,河南洛阳471003

出　　处：《航空动力学报》2023年第12期2982-2990,共9页Journal of Aerospace Power

基　　金：国家自然科学基金(51875174)。

摘　　要：从ease-off差曲面拓扑修形出发,对变位斜齿轮啮合参数进行了解析,获得了齿面接触、运动与力学参数;应用离散接触线有限元,拟赫兹点接触仿真,解决了齿面边缘接触应力集中的求解问题;利用经典摩擦磨损计算模型,快捷求解了齿面瞬时接触线上的动态磨损系数,获得了两齿面磨损量三维分布云图。结果表明:主动轮齿根处磨损量远超齿顶处,从动轮齿顶处磨损略大于齿根处;主动轮啮入区磨损变化剧烈,啮出区磨损均匀,从动轮啮入区与啮出区磨损量无明显差异;抛物线修形,使齿面的磨损向齿宽中部集中,有利于改善齿面的磨损分布。选用合适的变位系数、修形量能够调整齿面的磨损分布,延长齿面的精度寿命。为变位、修形多变量耦合斜齿轮磨损计算、减摩设计提供了理论方法。Based on ease-off surface topology,the meshing parameters of modified helical gear were analyzed,and the tooth contact,motion and mechanical parameters of gear surface were obtained.The discrete contact line finite element method simulating the point contact of Quasi Hertz was used,and the problem of stress concentration in instantaneous contact zone of tooth surface boundary was solved;using the classical friction and wear modthe dynamic wear coefficient on the instantaneous contact line of tooth surface was solved quickly.The 3D distribution nephogram wear of two tooth surfaces was obtained.The results showed that the wear at the root of the pinion gear was far greater than that at the tip,and the wear at the top of the gear was slightly greater than that at the root of the tooth.Engaging-in of the pinion wore a lot,while the engaging-out wore uniformly.The wear change of the gear in the meshing area was not obvious.Parabolic modification made the wear of tooth surface concentrated to the middle part of tooth width,helping to improve the wear distribution of tooth surface.The wear distribution of the tooth surface can be adjusted and the precision life of the tooth surface can be prolonged by selecting appropriate modification coefficient and modification quantity.It could provide a theoretical method for wear calculation and friction reduction design of modified and multivariable coupling helical gear conditions such as displacement modification.

关 键 词：拓扑修形 斜齿轮 动态磨损系数 磨损计算 三维 

分 类 号：V231[航空宇航科学与技术—航空宇航推进理论与工程] TH132[机械工程—机械制造及自动化]