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
Key words
flash temperature/body temperature field/transient temperature field/spiral bevel gear/finite element analysis
维普
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