摘要
作为机械装备中的关键传动机构,渐开线直齿轮在啮合传动过程中,受极端工况影响,轮齿表面极易引发剥落缺陷,改变齿轮副啮合刚度,严重影响其工作性能和传动效率。针对轮齿表面剥落形貌演变过程中的齿轮副啮合刚度,以拓展后边缘线与原矩形剥落边缘线夹角描述剥落故障演变,结合势能法构建了含剥落故障齿轮副的啮合刚度计算模型。结果表明,当齿轮副发生齿面剥落时,会使剥落区域参与的啮合区间啮合刚度减小,并且随着剥落参数的增大,齿轮啮合刚度减小趋势增大;当剥落区域沿齿轮副轴向中心面不对称时,齿轮易发生扭转变形而产生扭转刚度;同时,由于摩擦力存在,剥落区域边缘会进一步拓展,使剥落区域的宽度增大,导致齿轮副时变啮合刚度曲线变化的区间范围增大。
As a key transmission mechanism in mechanical equipment,in the meshing transmission pro-cess of involute spur gears,under the influence of extreme working conditions,the tooth surface is easy to causespalling defects,change the meshing rigidity of gear pairs,and seriously affect its working performance andtransmission efficiency.On tooth surface spalling morphology evolution process of the gear pair meshing stiff-ness,to expand the edge line with the original rectangular flake edge line Angle peel fault evolution,combinedwith the method of potential energy building containing flaking fault gears meshing stiffness calculation model.The results show that when the gear tooth surface spalling occurs,will make the spalling is involved in the mesh-ing range of mesh stiffness is reduced,and with the increase of scaling parameters,small gear meshing stiffnessincrease trend,and when the peeling area along the axial center gear pair,the surface is asymmetric gear torsion-al deformation and torsional stiffness.At the same time,due to the existence of friction,the edge of the spallingarea will be further expanded,so that the width of the spalling area will increase,resulting in the range of time-varying mesh stiffness curve changes of the gear pair.
作者
代鹏
王建平
闫淑萍
黄胜洲
刘军
王风涛
Dai Peng;Wang Jianping;Yan Shuping;Huang Shengzhou;Liu Jun;Wang Fengtao(School of Mechanical and Automotive Engineering,Anhui Polytechnic University,Wuhu 241000,China;State Key Laboratory of Engine Reliability,Weifang 261001,China)
出处
《机械传动》
北大核心
2021年第6期16-21,70,共7页
Journal of Mechanical Transmission
基金
国家自然科学基金(51905001)
内燃机可靠性国家重点实验室开放基金(SKLER-201801)。
关键词
剥落
剥落拓展
直齿轮副
时变啮合刚度
非对称剥落
Spalling
Spalling extension
Spur gear pair
Time-varying meshing stiffness
Asymmetric spalling
