Contour bevel gears have the advantages of high coincidence, low noise and large bearing capacity, which are widely used in automobile manufacturing, shipbuilding and construction machinery. However, when the surface quality is poor, the effective contact area between the gear mating surfaces decreases, affecting the stability of the fit and thus the transmission accuracy, so it is of great significance to optimize the surface quality of the contour bevel gear. This paper firstly analyzes the formation process of machined surface roughness of contour bevel gears on the basis of generating machining method, and dry milling experiments of contour bevel gears are conducted to analyze the effects of cutting speed and feed rate on the machined surface roughness and surface topography of the workpiece. Then, the surface defects on the machined surface of the workpiece are studied by SEM, and the causes of the surface defects are analyzed by EDS. After that, XRD is used to compare the microscopic grains of the machined surface and the substrate material for diffraction peak analysis, and the effect of cutting parameters on the microhardness of the workpiece machined surface is investigated by work hardening experiment. The research results are of great significance for improving the machining accuracy of contour bevel gears, reducing friction losses and improving transmission efficiency.

轮廓锥齿轮具有重合度高、噪音低、承载能力大等优点，广泛应用于汽车制造、造船和工程机械。然而，当表面质量较差时，齿轮啮合面之间的有效接触面积减小，影响配合的稳定性，进而影响传动精度，因此优化仿形锥齿轮的表面质量具有重要意义。本文首先在生成加工方法的基础上分析了异形锥齿轮加工表面粗糙度的形成过程，并通过异形锥齿轮的干铣削实验，分析了切削速度和进给量对加工表面粗糙度和表面粗糙度的影响。工件的形貌。然后，利用SEM对工件加工表面的表面缺陷进行了研究，并通过EDS分析了表面缺陷产生的原因。之后利用XRD对比加工表面和基体材料的微观晶粒进行衍射峰分析，并通过加工硬化实验研究切削参数对工件加工表面显微硬度的影响。研究成果对于提高轮廓锥齿轮的加工精度、减少摩擦损失、提高传动效率具有重要意义。并通过加工硬化实验研究了切削参数对工件加工表面显微硬度的影响。研究成果对于提高轮廓锥齿轮的加工精度、减少摩擦损失、提高传动效率具有重要意义。并通过加工硬化实验研究了切削参数对工件加工表面显微硬度的影响。研究成果对于提高轮廓锥齿轮的加工精度、减少摩擦损失、提高传动效率具有重要意义。