粗糙齿面接触应力与齿轮转速关系的理论探析
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摘要
通过实测获得了具有横向纹理的表面粗糙度数据,借助傅立叶非线性变换,形成了近似真实分布的齿面粗糙度函数;将此函数叠加到油膜厚度方程中,构建了渐开线直齿圆柱齿轮传动混合弹流润滑模型。基于该模型,分别针对中、重载齿轮传动,通过改变小齿轮转速之值,共进行了约130组数值计算。结果表明,增大齿轮转速可有效改善齿轮润滑状态、降低齿面接触应力;然而,当转速增至一定值后,接触应力随转速的下降幅度十分缓慢。
The surface roughness data of test-piece with transverse roughness profiles are measured.With the help of the Fourier approximation,the measured data are used to form a roughness function which is then added to the oil film thickness equation and a model of mixed elastohydrodynamic lubrication for an involute spur gear transmission is established. Based on this model,nearly 130 groups numerical calculations are carried out through changing the pinion speeds for medium and heavy-duty gear transmissions respectively.The computing results show increasing the pinion speed can effectively improve the gearing lubrication state and reduce the contact stress on rough surface. However,decreasing of the contact stress is very slowly with the addition of the pinion speed when the speed exceeds a certain value.
The surface roughness data of test-piece with transverse roughness profiles are measured.With the help of the Fourier approximation,the measured data are used to form a roughness function which is then added to the oil film thickness equation and a model of mixed elastohydrodynamic lubrication for an involute spur gear transmission is established. Based on this model,nearly 130 groups numerical calculations are carried out through changing the pinion speeds for medium and heavy-duty gear transmissions respectively.The computing results show increasing the pinion speed can effectively improve the gearing lubrication state and reduce the contact stress on rough surface. However,decreasing of the contact stress is very slowly with the addition of the pinion speed when the speed exceeds a certain value.
引文
[1]袁祥,亓秀梅,高创宽.渐开线重载齿轮传动的弹流润滑分析[J].机械传动,2013,37(11):134-137.
[2]高经纬,姜庆华,张培林,等.传动齿轮表面磨损过程中油液参数磨损特性分析[J].机械传动,2008,32(5):24-26.
[3]卢立新,蔡莹.直齿轮传动非牛顿流体瞬态弹流润滑研究[J].润滑与密封,2005,30(6):36-38.
[4]张天勇,朱汉华.齿轮齿面润滑与接触特性分析[J].润滑与密封,2010,35(7):40-45.
[5]崔金磊,杨沛然.单粗糙峰通过接触区全过程的时变热弹流数值仿真[J].机械设计,2006,23(4):32-35.
[6]畅通,王优强.考虑粗糙度的直齿圆柱齿轮热混合润滑分析[J].润滑与密封,2009,34(4):35-39.
[7]周忠可,亓秀梅,高创宽.粗糙齿面的弹流润滑数值分析[J].机械设计与制造,2014(3):41-43.
[8]任阳春,亓秀梅,高创宽.渐开线重载齿轮传动非牛顿流体热弹流润滑分析[J].润滑与密封,2012,37(12):43-46.
[9]杨沛然.流体润滑数值分析[M].北京:国防工业出版社,1998:9-15,60-69.
[2]高经纬,姜庆华,张培林,等.传动齿轮表面磨损过程中油液参数磨损特性分析[J].机械传动,2008,32(5):24-26.
[3]卢立新,蔡莹.直齿轮传动非牛顿流体瞬态弹流润滑研究[J].润滑与密封,2005,30(6):36-38.
[4]张天勇,朱汉华.齿轮齿面润滑与接触特性分析[J].润滑与密封,2010,35(7):40-45.
[5]崔金磊,杨沛然.单粗糙峰通过接触区全过程的时变热弹流数值仿真[J].机械设计,2006,23(4):32-35.
[6]畅通,王优强.考虑粗糙度的直齿圆柱齿轮热混合润滑分析[J].润滑与密封,2009,34(4):35-39.
[7]周忠可,亓秀梅,高创宽.粗糙齿面的弹流润滑数值分析[J].机械设计与制造,2014(3):41-43.
[8]任阳春,亓秀梅,高创宽.渐开线重载齿轮传动非牛顿流体热弹流润滑分析[J].润滑与密封,2012,37(12):43-46.
[9]杨沛然.流体润滑数值分析[M].北京:国防工业出版社,1998:9-15,60-69.