基于齿面波纹度的齿轮啮合噪声分析理论

Research on gear meshing noise analysis theory based on tooth surface waviness

文章提出一种基于齿面波纹度的齿轮啮合噪声分析理论,通过对齿轮全齿面的拓扑测量、齿面波纹度分析,对比全齿波纹度图、高阶频谱图的阶次振幅大小与三维形貌图中啮合线、波纹线的接近程度,实现对高速低噪齿轮的噪声分析。基于齿面波纹度分析技术,弥补传统齿轮测量在精度一致时无法辨别齿轮啮合噪声的缺点,可在生产周期前期对故障齿轮进行筛选,降低检测成本;基于新能源汽车变速箱,分析输入轴齿轮批次更换时反复出现噪声的原因,对测量的拓扑数据进行波纹度计算。结果显示,齿轮右齿面存在鬼阶和整阶不良,推断在啮合时产生噪声,该分析结果与变速箱台架实验结果一致。

In this paper,a gear meshing noise analysis theory based on tooth surface waviness is proposed.Through topological measurement and waviness analysis on full gear tooth surface,the amplitude of ripple above the rotation angle and the high orders of the spectrum are compared.Furthermore,how close the meshing line is to the waviness line in the microtopography is also compared.Then,the noise behavior of high-speed and low-noise gears can be analyzed.The technology of tooth surface waviness analysis can make up for the shortcomings of traditional gear measurement methods that cannot distinguish gear meshing noise under the condition of the same accuracy.Unqualified gears can be removed from the early stage of the production cycle,which reduces a lot of inspection costs.Based on a new energy vehicle gearbox,the reason for repeated noise during the batch replacement of input shaft gears is analyzed.The measured topological data is used for waviness analysis and calculation.The result shows that there is gear order noise and ghost order noise on the right tooth surface of one of the gears.It may cause noise in meshing process.The analysis result is consistent with the experimental result of the gearbox.