何亮

（重庆交通大学机电与车辆工程学院，重庆 400074）

摘要：基于斜齿轮啮合接触线理论，分析中心距误差对斜齿轮动态特性的影响。以一对地铁斜齿轮为研究对象，首先，利用切片法和势能法计算存在中心距误差的斜齿轮时变啮合刚度和动态传递误差；然后，采用集中质量法建立弯-扭-轴8自由度斜齿轮动力学模型，分析斜齿轮系统的动态啮合特性；最后，研究不同中心距误差对斜齿轮时变啮合刚度、动态啮合力和振动特性的影响。实验结果表明：斜齿轮的时变啮合刚度随中心距误差增大而减小；动态啮合力随中心距误差变化波动较小；中心距误差会导致斜齿轮啮合稳定性降低，为斜齿轮传动系统的降振减噪提供参考。

关键词：中心距误差；斜齿轮；时变啮合刚度；动态啮合力；动态特性

中图分类号：TH132.41          文献标志码：A          文章编号：1674-2605(2024)01-0004-07

DOI：10.3969/j.issn.1674-2605.2024.01.004

Research on the Influence of Center Distance Error on the Dynamic Characteristics of Helical Gears 

HE Liang 

(School of Mechanical and Electrical Engineering, Chongqing Jiaotong University, Chongqing 400074, China)

Abstract: Based on the meshing contact line theory of helical gears, the influence of center distance error on the dynamic characteristics of helical gears is analyzed. Taking a pair of subway helical gears as the research object, firstly, the slicing method and the potential energy method are used to calculate the time-varying meshing stiffness and dynamic transmission error of the helical gears under the center distance error; then, the lumped mass method is used to establish the bending-torsional-axis helical gear dynamics. model to analyze the dynamic meshing characteristics of the helical gear system; finally, the effects of different center distance errors on the time-varying meshing stiffness, dynamic meshing force and vibration characteristics of the helical gear are studied. The research results show that the time-varying meshing stiffness of the helical gear decreases as the center distance error increases; the average dynamic meshing force of the helical gear fluctuates less with the change of the center distance error, and the center distance error will cause the gear meshing stability to decrease, as Provide reference for vibration and noise reduction of gear system.

Keywords: center distance deviation; TVMS; gear dynamics; dynamic characteristics