基于Lundberg-Palmgren理论的行星轮系齿轮点蚀疲劳寿命计算  

Pitting Fatigue Prediction for Planetary Gears Based on Lundberg-Palmgren Theory

作　　者：胡耿 陈志刚 HU Geng;CHEN Zhigang(AECC Hunan Aviation Powerplant Research Institute,Zhuzhou 412002,China;National Defense Key Laboratory of Science and Technology on Helicopter Transmission,Zhuzhou 412002,China)

机构地区：[1]中国航发湖南动力机械研究所,湖南株洲412002 [2]直升机传动技术国防科技重点实验室,湖南株洲412002

出　　处：《机械工程师》2021年第6期128-129,132,共3页Mechanical Engineer

摘　　要：介绍了Lundberg-Palmgren理论及基于该理论的外啮合齿轮点蚀寿命计算方法,考虑到行星轮系中行星轮与内齿圈为内啮合接触,提出了内啮合轮齿基本额定动载荷计算方法,主要修正因素包括综合曲率半径、啮合线长度等。最后以某减速器为算例,计算了该行星轮系各齿轮的点蚀寿命,结果表明:太阳轮的点蚀计算寿命最低,内齿圈的寿命最高,轮系齿轮总点蚀寿命为6.08×10~6h。This paper briefly introduces the Lundberg-Palmgren theory and the pitting fatigue prediction for spur gears based on this theory,and proposes a new method for calculating the basic dynamic load capacity for internal meshing gears.The modification for internal meshing gears includes the effects of curvature radius,meshing length,etc.Finally,the pitting fatigue lives of all gears in a gear reducer are obtained.The results show that the sun gears is of highest pitting fatigue while ring gear of lowest fatigue,and the total pitting life of all the gears is predicted to be 6.08×108 hours.

关 键 词：点蚀寿命 Lundberg-Palmgren理论 行星轮系 

分 类 号：TH132.4[机械工程—机械制造及自动化]