摘要
针对双渐开线齿轮分阶参数对弹流润滑特性影响的问题,根据双渐开线齿轮齿廓啮合特点及弹流润滑理论,推导出了双渐开线齿轮接触线长度及当量曲率半径计算公式。建立了双渐开线齿轮弹流润滑模型,研究了双渐开线齿轮分阶参数对弹流润滑特性的影响;通过数值计算,得出了最小油膜厚度及摩擦系数在啮合周期内的分布情况。研究结果表明:采用该模型得出的最小油膜厚度与已有算例及经验公式得出的数值结果偏差较小;与双渐开线齿轮齿腰高度系数相比,齿腰切向变位系数对最小油膜厚度的影响较小,最小油膜厚度随高度系数的增大而减小;摩擦系数随齿腰高度系数的增大而增大,随齿腰切向变位系数的增大而减小。
Aiming at the effects of ladder-shaped parameters for double involute gears on elastohydrodynamic lubrication,the formulas of the contact line and the radius of equivalent curvature were proposed based on the tooth profile and elastohydrodynamic lubrication theory.The variation of the minimum oil film thickness and friction coefficient in the meshing period was obtained by numerical calculation.The elastohy drodynamic lubrication model of double involute gearuas estaldished,and the influence of step parameters of double involute gear on elastohydrodynamic lubrication characteristics was studied.The results indicate that the minimum film thickness obtained by the model is slightly different from the numerical results obtained by the example and empirical formulas.Compared with the height coefficient,the tangential displacement coefficient has less effect on the minimum oil film thickness,and the minimum film thickness decreases with the increase in the height coefficient.The friction coefficient increases with the increase in height coefficient and decreases with the increase in tangential displacement coefficient.
作者
樊智敏
王明凯
尹兆明
哈振骞
FAN Zhi-min;WANG Ming-kai;YIN Zhao-ming;HA Zhen-qian(School of Mechanoelectrical Engineering,Qingdao University of Science and Technology,Qingdao 266061,China)
出处
《机电工程》
CAS
北大核心
2020年第2期113-119,共7页
Journal of Mechanical & Electrical Engineering
基金
山东省自然科学基金资助项目(ZR2018MEE014)
关键词
双渐开线齿轮
弹流润滑
分阶参数
油膜厚度
摩擦系数
double involute gear
elastohydrodynamic lubrication
ladder-shaped parameters
oil film thickness
friction coefficient
