考虑系统变形的驱动桥准双曲面齿轮啮合效率计算方法  

Calculation method of hypoid gear meshing efficiency of drive axles with considering system deformation

作　　者：王钦[1] 贺迪 桂良进[1] 胡智宇 彭金 范子杰[1] WANG Qin;HE Di;GUI Liangjin;HU Zhiyu;PENG Jin;FAN Zijie(State Key Laboratory of Automotive Safety and Energy,School of Vehicle and Mobility,Tsinghua University,Beijing 100084,China;Shaanxi Hande Axle Co.,Ltd.,Xi'an 710201,China;Hande Axle(Zhuzhou)Gear Co.,Ltd.,Zhuzhou 412000,China)

机构地区：[1]清华大学车辆与运载学院,汽车安全与节能国家重点实验室,北京100084 [2]陕西汉德车桥有限公司,西安710201 [3]汉德车桥(株洲)齿轮有限公司,株洲412000

出　　处：《清华大学学报（自然科学版）》2024年第1期33-43,共11页Journal of Tsinghua University(Science and Technology)

基　　金：清华大学校企合作项目(20192002040)。

摘　　要：准双曲面齿轮是驱动桥系统的关键零部件之一,常在高速重载工况下工作。由于系统变形大且齿面啮合状态复杂,重载工况下会引起齿面载荷的显著偏载。因此,考虑系统变形对准双曲面齿轮啮合性能的影响具有重要意义。该文针对复杂工况下的驱动桥准双曲面齿轮,提出了考虑系统变形的齿轮啮合效率计算方法。首先,将驱动桥系统简化为多支撑轴系耦合模型,计算不同载荷工况下系统变形引起的齿轮啮合错位量。然后,基于齿轮机床加工参数计算实际齿面,并采用齿轮摩擦加载接触分析(frictional loaded tooth contact analysis,FLTCA)方法求解得到实际运行工况下齿面载荷分布与啮合效率。最后,通过驱动桥台架试验对比不同工况下齿轮副齿面载荷分布和啮合效率。试验结果表明:系统变形对准双曲面齿轮齿面载荷分布具有不可忽略的影响。同时,该试验验证了驱动桥准双曲面齿轮啮合效率计算方法的有效性。[Objective]The face-hobbing hypoid gear is a crucial component of drive axles owing to its continuous indexing processing capabilities.However,in practical engineering applications,gear pairs rarely operate under ideal conditions.Instead,they frequently experience heavy-load and high-speed conditions.These conditions result in substantial system deformation and a complex meshing state of the tooth surface.Under heavy-load conditions,considerable skewing of the load on the tooth surface can occur,greatly affecting the performance of the gear pair and drive axles.Currently,the system deformation factor under actual working conditions is not sufficiently considered,making it challenging to address the aforementioned issue.Consequently,this paper proposes the analysis of the tooth surface load distribution by employing a semi-analytic loaded tooth contact analysis method to accurately predict the tooth surface load distribution.Based on a load distribution analysis,a highly accurate calculation method for gear meshing efficiency is proposed.[Methods]This paper proposes a calculation method for gear meshing efficiency under mixed-lubrication conditions for hypoid gears in drive axles operating under complex working conditions.First,a multi-support shaft system modeling method is employed to analyze the drive axles system.This method can calculate the forces acting on various components,such as gears and bearings,as well as the gear misalignment caused by system deformation under various load conditions.Second,by simulating the spatial motion process of the actual gear machining machine,the coordinates of the tool cutting point are transformed to the coordinate system of the gear blank via coordinate transformation.This process results in the correspondence of the tooth profile with the actual machining parameters.The time-varying friction coefficient distribution of the tooth surface under different working conditions is derived by combining the point contact mixed-lubrication friction coefficient model of the tooth s

关 键 词：驱动桥 准双曲面齿轮 接触分析 啮合效率 混合润滑 系统变形 

分 类 号：TH132.422[机械工程—机械制造及自动化]