细高齿齿轮啮合刚度及动态特性研究  

Study on Meshing Stiffness and Dynamic Characteristics of Fine High Tooth Gears

作　　者：章翔峰[1] 尚俊 周建星[1] 费翔 Zhang Xiangfeng;Shang Jun;Zhou Jianxing;Fei Xiang(School of Mechanical Engineering,Xinjiang University,Urumqi 830017,China)

机构地区：[1]新疆大学机械工程学院,新疆乌鲁木齐830017

出　　处：《机械传动》2023年第8期30-35,共6页Journal of Mechanical Transmission

基　　金：国家自然科学基金项目(51865054);新疆维吾尔自治区自然科学基金项目(2021D01C050)。

摘　　要：为了研究细高齿齿轮的振动特性,以一对标准齿齿轮和细高齿齿轮为对比研究对象,建立直齿轮传动系统平移-扭转动力学模型;采用有限元方法求解细高齿齿轮的时变啮合刚度,分析了负载对刚度的影响规律;通过Newmark-β时间积分法计算齿轮的振动响应,对比标准齿齿轮和细高齿齿轮传动系统的轴承动载荷及齿轮啮合激励,求解了不同转速下两对齿轮系统的输入、输出轴承动载荷。结果表明,细高齿齿轮啮合为两齿-三齿交替接触,刚度变化减弱;轴承动载荷波动幅值较标准齿大幅降低,啮合频率及其倍频幅值明显下降,轮齿间啮合力减小。In order to study the vibration characteristics of fine high tooth gears,a pair of standard gears and fine high gears are taken as comparative experimental objects,and the translation torsion dynamic model of a spur gear transmission system is established.The finite element method is used to solve the time-varying meshing stiffness of fine high tooth gears,and the influence of load on the stiffness is analyzed.The vibration re⁃sponse of gears is calculated by Newmark-βtime integration method.The dynamic loads of bearings and gear meshing excitation of standard gears and fine high gear transmission systems are compared,and the dynamic loads of input and output bearings of two pairs of gear systems at different speeds are solved.The results show that the meshing of fine high gears is two-tooth three-tooth alternating contact,and the change of stiffness is weakened.The dynamic load fluctuation amplitude of the bearing is significantly lower than that of the standard tooth,the meshing frequency and its frequency doubling amplitude are significantly reduced,and the meshing force between the teeth is reduced.

关 键 词：细高齿 啮合刚度 动态特性 啮合激励 

分 类 号：TH132.41[机械工程—机械制造及自动化]