摘要
针对汽车传动中齿轮齿面振动引起的噪声的问题,建立了齿轮与齿轮啮合的系统振动模型,同时将模型中的误差量与齿轮齿廓的修形量进行关联,耦合建立出齿轮齿廓在齿顶部分和齿根部分的修形曲线,并搭建齿轮啮合振动系统动态模型的实验平台对振动噪声做进一步分析。通过实验发现齿轮啮合噪声是影响着整体波形的大小和走向的重要因素,修形后的齿轮拟合噪声时域图波形振幅相对于修形前明显减弱,冲击减小趋势显著;同时,对主试箱振动噪声进行实时采集对比修形前后采样的噪声点。验证了系统振动模型和修形方法的可行性,为汽车变速箱降噪的研究提供了参考。
Aiming at the problem of gear tooth surface vibration noise in automotive transmission, the system vibration model of gear meshing with the gear is established, and the error amount and modification amount of gear tooth profile model are associated, and gear tooth profile in the top of part and the root part is coupled and established, then analysis of vibration and noise is carried out by experimental platform of gear meshing vibration system dynamic model. Through the experiment analysis, it is found that gear meshing noise is an important factor affecting the size and orientation of overall waveform, the modification of gear noise waveform amplitude with respect to time domain fitting before modification is weakened, the impact decreased significantly. At the same time, the main test box vibration and noise are collected by real - time to contrast the noise samples before and after the modification. It is verified the feasibility of system vibration model and the modification method, and a reference for the study of automobile gearbox noise is provided.
出处
《机械传动》
CSCD
北大核心
2016年第11期176-180,共5页
Journal of Mechanical Transmission
关键词
振动模型
修形曲线
齿面振动噪声
Vibration model Modification curve Gear tooth surface vibration noise
