基于粗糙度的渐开线直齿圆柱齿轮的润滑数值分析
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摘要
基于渐开线直齿圆柱齿轮齿面加工方式对表面粗糙度的影响,建立了精确的表面粗糙度模型,进行弹流润滑数值研究分析。研究结果表明,考虑表面粗糙度的油膜压力分布出现了明显的二次压力峰,油膜厚度出现了明显的颈缩,并且颈缩多呈现在出口区,温度曲线呈现出分层次的鼓包。粗糙度的粗糙峰处出现二次压力峰,且二次压力峰的幅值与粗糙度呈明显的正相关;随着粗糙峰的增大,膜厚存在一定程度的波动,油膜膜厚与粗糙峰幅值呈明显的负相关;油膜的区域温度随着接触表面粗糙峰幅值的增大呈明显增大的趋势。研究结果填补了渐开线直齿圆柱齿轮粗糙度系数理论的不足。
In order to fill the shortcomings of the roughness coefficient theory of involute spur gears,this paper discusses the effect of the machining method on the surface roughness,and establishes the accurate surface roughness model and simulates the elastic fluid lubrication. The results show that there is a significant secondary pressure peak in the oil film pressure distribution considering the surface roughness,and the film thickness of the oil film is obvious. The necking phenomenon is mostly in the outlet area. Roughness of the rough peak at the secondary pressure peak,and the secondary pressure peak amplitude and roughness show a significant positive correlation between; with the roughness of the roughness of the increase in the thickness of a certain degree and the film thickness of the oil film show a significant negative correlation with the amplitude of the roughness. The regional temperature of the oil film shows a significant increase with the increase of the amplitude of the surface roughness.
In order to fill the shortcomings of the roughness coefficient theory of involute spur gears,this paper discusses the effect of the machining method on the surface roughness,and establishes the accurate surface roughness model and simulates the elastic fluid lubrication. The results show that there is a significant secondary pressure peak in the oil film pressure distribution considering the surface roughness,and the film thickness of the oil film is obvious. The necking phenomenon is mostly in the outlet area. Roughness of the rough peak at the secondary pressure peak,and the secondary pressure peak amplitude and roughness show a significant positive correlation between; with the roughness of the roughness of the increase in the thickness of a certain degree and the film thickness of the oil film show a significant negative correlation with the amplitude of the roughness. The regional temperature of the oil film shows a significant increase with the increase of the amplitude of the surface roughness.
引文
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[2]王优强,董宁,刘前,等.考虑固体颗粒和粗糙度的水润滑飞龙轴承热弹流润滑性能分析[J].机械工程学报,2017,53(3):121-129.
[3]严宏志,黄国兵,黎超,等.螺旋锥齿轮齿面粗糙度对其乏油润滑寿命的影响[J].润滑与密封,2016,41(8):1-5.
[4]黄兴保,王优强.考虑粗糙度和固体颗粒效应的直齿轮跑合瞬态热弹流润滑分析[J].计算力学学报,2016,33(2):238-244.
[5]王优强,卞荣.连续波状粗糙度对直齿轮热弹流润滑的影响[J].机械工程学报,2009,45(8):112-118.
[6]姜明,高雷鸣,杨沛然.考虑纵向粗糙度的点接触微观热弹流润滑数值分析[J].润滑与密封,2003,28(4):20-21,24.
[7]翟文杰,张鹏顺.表面粗糙度对点接触弹流润滑性能的影响[J].机械科学与技术,1994(2):6-10.
[8]赵慧敏.考虑表面粗糙度的非牛顿点接触混合润滑研究[D].青岛:青岛理工大学,2016.
[9]邹玉静,常德功.考虑动载荷和表面粗糙度的渐开线齿轮摩擦因数的研究[J].工程设计学报,2014,21(3):285-291.
[10]卢宪玖,王优强,律辉,等.微观表面形貌对角接触球轴承热弹流润滑的影响[J].润滑与密封,2014,39(6):49-55.
[11]刘晓玲,杨沛然.纵向表面粗糙度对滚子副乏油润滑性能的影响[J].农业机械学报,2010,41(11):202-207.