摘要
在Blok闪温公式的基础上,计算混合弹流润滑下的齿面平均摩擦因数,修正了公式中的齿面平均摩擦因数,提高了计算精度。同时,通过计算弧齿锥齿轮沿齿面啮合点的切向速度、赫兹接触带半宽和载荷分配系数,提出了混合弹流润滑下弧齿锥齿轮沿接触轨迹和全齿面的闪温公式。经算例分析表明,非正交弧齿锥齿轮副沿接触轨迹闪温的最大值位于啮出轨迹中部,全齿面闪温的最大值在大轮节锥与齿根之间的齿面中部,这些部位最容易发生胶合。
The mean friction coefficient on tooth surface was calculated under mixed elastohydrodynamic lubrication based on Blok＇s flash temperature formula.Furthermore,the mean friction coefficient of the formula was modified,and the formula was improved.Meanwhile,through calculating the tangential velocity,half width of Hertz contact zone and load distribution factor along the meshing point of spiral bevel gears,the formulas to calculate the flash temperatures along the contact path and whole tooth surface of spiral bevel gears under mixed elastohydrodynamic lubrication were proposed respectively,which provided a comprehensive and accurate method for its calculation of scuffing load capacity.The results of analyzing the calculation example indicated that the maximum flash temperature along the contact path located in the middle recess path,and the one of the whole tooth surface was between the pitch cone and dedendum of gear,where the scuffing failure showed the most possibly.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2011年第2期207-211,共5页
Transactions of the Chinese Society for Agricultural Machinery
基金
国家自然科学基金资助项目(50875211)
关键词
混合弹流润滑
弧齿锥齿轮
平均摩擦因数
胶合
闪温
Mixed elastohydrodynamic lubrication
Spiral bevel gears
Mean friction coefficient
Scuffing
Flash temperature
