摘要
重合度是齿轮传动设计中一个重要的性能指标,直接影响人字齿轮承载能力和传动平稳性,在齿轮设计中必须满足重合度要求。首先说明了人字齿轮系统刚度激励和啮合冲击激励,采用集中质量法建立了一对人字齿轮传动系统弯-扭-轴耦合模型。然后分析了重合度对时变啮合刚度和啮合冲击力的影响。最后研究了重合度对人字齿轮副动态啮合特性的影响。得出结论:重合度由2.72增至3.08时,时变啮合刚度峰峰值由4.653 3×10^(8) N/mm减至3.229 9×10^(8) N/mm,最大啮合冲击力由2.23×10^(3) N减至1.92×10^(3) N,齿轮副动态啮合力曲线变得平滑,动载系数也由1.23减至1.18,从而得出重合度增大,能达到系统减振降噪和传动平稳的作用。
The contact ratio is an important performance index in the design of gear transmission,and it directly affects the load-bearing capacity and transmission stability of herringbone gears.The requirements of contact ratio must be met when designing gear pairs.Firstly,the stiffness excitation and meshing impact excitation of herringbone gear system are introduced,and a bending-torsion-axis coupling model of a pair of herringbone gear transmission system is established by means of lumped-mass method.Then,the influence of contact ratio on time-varying meshing stiffness and meshing impact force is analyzed.Finally,the influence of contact ratio on the dynamic meshing performance of herringbone gear pairs is studied.The results show that when the contact ratio increases from 2.72 to 3.08,the peak-to-peak value of time-varying meshing stiffness is reduced from 4.653 3×10^(8) N/mm to 3.229 9×10^(8) N/mm,and the maximum meshing impact force is reduced from 2.23×10^(3) N to 1.92×10^(3) N,and dynamic meshing force curve of the gear pair becomes smooth,and the dynamic load factor is also reduced from 1.23 to 1.18.It is concluded that the increase of contact ratio can achieve the effect of system vibration reduction,noise reduction and transmission stability.
作者
尹逊民
贾海涛
张润博
张西金
YIN XunMin;JIA HaiTao;ZHANG RunBo;ZHANG XiJin(The 703 Research Institute of CSIC,Harbin 150078,China;School of Mechanical Engineering,Northwestern Polytechnical University,Xi′an 710072,China)
出处
《机械强度》
CAS
CSCD
北大核心
2023年第2期284-289,共6页
Journal of Mechanical Strength
基金
国家自然科学基金项目(52005402)资助。
关键词
重合度
人字齿轮传动系统
集中质量法
振动特性
Contact ratio
Herringbone gear transmission system
Lumped-mass method
Vibration characteristics
作者简介
尹逊民,男,1968年生,山东东阿人,汉族,中国船舶重工集团公司第七○三研究所研究员,硕士研究生,主要研究方向为机械传动与振动。
