Blok闪温法的改进及在弧齿锥齿轮齿面温度预测中的应用  

Improvement of Blok flash temperature method and its application in prediction of tooth surface temperature of spiral bevel gears

作　　者：肖扬 王三民[1] 李飞 任鸿飞 乔喆烨 XIAO Yang;WANG Sanmin;LI Fei;REN Hongfei;QIAO Zheye(School of Mechanical Engineering,Northwestern Polytechnical University,Xi’an 710072,China)

机构地区：[1]西北工业大学机电学院,西安710072

出　　处：《航空动力学报》2024年第11期416-424,共9页Journal of Aerospace Power

摘　　要：为准确预测弧齿锥齿轮齿面的瞬时最高温度,提出了一种新型齿轮闪温计算方法。通过考虑润滑油膜对齿轮闪温的影响,对传统Blok闪温法进行改进,获得了弹流润滑下的齿轮闪温计算公式,弥补了传统Blok闪温法未考虑润滑油膜的缺陷。并通过此公式对某型直升机传动系统内的一对弧齿锥齿轮进行了齿面闪温计算,将该方法和Joselito闪温法计算的数值结果分别与有限元仿真获得的结果进行了对比分析。结果表明:Joselito闪温法与有限元法的结果相差12%,改进Blok闪温法与有限元法的结果相差4%,说明改进Blok闪温法更接近有限元法的结果,并从多角度验证了该公式的准确性与优越性,为进一步完善轮齿胶合承载能力计算提供了理论依据。In order to accurately predict the instantaneous maximum temperature of spiral bevel gears tooth surface,a new method for calculating gear flash temperature was proposed.By considering the influence of lubricating oil film on gear flash temperature,the traditional Blok flash temperature method was improved and the calculation formula of gear flash temperature under elastohydrodynamic lubrication was obtained,which made up for the defect that the traditional Blok flash temperature method did not consider lubricating oil film.Then the proposed method was used to calculate the tooth surface flash temperature of a pair of spiral bevel gears in a helicopter transmission system.The numerical results calculated by the proposed method and Joselito's method were respectively compared with those obtained by finite element simulation.The results showed that the difference between Joselito’s flash temperature method and finite element method was 12%,and the difference between the proposed method and finite element method was 4%,which verified the accuracy and superiority of the proposed method from various angles,thus providing a theoretical basis for further improving the calculation of gear tooth bonding load capacity.

关 键 词：闪温 本体温度场 瞬态温度场 弧齿锥齿轮 有限元分析 

分 类 号：V232.8[航空宇航科学与技术—航空宇航推进理论与工程]