棱度是切齿工序中多年来常见的老问题。本文从滚齿过程的几何特点、滚刀的啮合误差、滚刀的安装偏心、对刀误差以及机床传动链误差等方面,详细地讨论了棱度的成因,并提出了相邻刀刃“过切”使齿面成直线的“关系式”及“对刀概率”问题。 Degree is a common problem that has been common in the cutting process for many years. In this paper, the causes of the edge degree are discussed in detail in terms of the geometric characteristics of the hobbing process, the hobbing error of the hob, the eccentricity of the hob, the tool setting error and the transmission chain error of the machine tool. The “relationship” that makes the flank straight and the “probabilities of knives.”