表面微织构对重载齿轮传动摩擦性能的影响

Influence of surface micro-texture on the tribological properties of heavy-duty gears

为研究表面微织构对重载齿轮传动摩擦性能的影响,该文建立了基于Magg交叉纹理和普通磨削纹理的接触模型,给出了摩擦特性参数的计算方法,比较了两种纹理摩擦特性。采用FZG齿轮抗胶合试验方法,对两种纹理的齿轮进行了摩擦引起的效率损失试验,试验结果与理论结果一致。另外,对Magg交叉纹理、普通磨削纹理和激光表面凹坑织构的摩擦性能进行了理论比较,结果表明凹坑织构具有更小的摩擦系数。

Contact models of the Magg cross texture and the grinding texture on a gear＇s surface were developed to study the influence of the surface micro-texture on the tribological properties of heavy-duty gears.Formulas are given for the frictional parameters.The models were used to compare the friction and wear behavior of two textured surfaces.Gears with different textures on the tooth surfaces were tested using the national standard for the scuffing load capacity of gears with the results agreeing well with the data.Comparison of these surfaces with a dimpled surface using the model showed that the dimpled surface has the smallest friction coefficient.