摘要
针对齿背啮合冲击引起传动效率、平稳性降低以及振动、噪声加大等问题,考虑齿轮误差、轮齿变形和齿侧间隙,研究齿轮啮合过程中齿背啮合机理。基于有限元动态接触模型,对齿轮啮合特性进行仿真,研究转速和负载对齿背啮合的作用效应。结果表明,一定的转速与负载下,出现轮齿正常啮合与齿背啮合交变;主动轮转速的增大会使齿背啮合冲击加剧,从动轮负载一定幅度内的增大会使得齿背啮合冲击有所减弱。齿背啮合发生时,正常啮合齿对的接触力在零与峰值之间振荡,实际齿轮啮合呈现"正常啮合-脱啮-齿背啮合-正常啮合"规律性的变化。该研究对于齿轮系统的减振与降噪设计具有一定的参考意义。
The meshing impact of teeth back which may lead to the phenomenon of low - transmission efficiency, poor accuracy and the decreased stability is studied by considering the teeth backlash, errors and deformation of the gears. Based on the finite element model of dynamic contact of the spur gears, the effects of rotate speed and load on the back meshing is obtained by simulating research result shows that both normal meshing and back meshing the meshing characteristic of the gear. The of gear teeth exist alternately in a certain speed and load condition. The impact of back meshing becomes serious with the increase of the speed of the driving gear. While, it may be weakened with the increase of the load applied on the driven gear within a certain level. When the phenomenon of back meshing happens in the meshing process, the contact force on the normal surface changes between zero and peak magnitude. At the same time, the actual meshing process of gear pairs is a regular cycling changes of normal meshing, has a certain reference value for designing gear system mesh apart, back in the aspects of meshing, normal meshing. The study reducing vibration and noise.
出处
《机械传动》
CSCD
北大核心
2016年第12期42-47,共6页
Journal of Mechanical Transmission
关键词
齿背啮合
动态接触
啮合冲击
脱啮
接触力
Back meshing
Dynamic contact
Meshing impact
Mesh -apart
Contact force
作者简介
魏伟（1980-），男，河南荥阳人，工程师。
