本文探讨了多轴联动数控铣削中进给速度的主要特点，并给出了有关的计算方法。这些方法已应用于整体离心叶轮、滚子齿式凸轮等复杂零件的多坐标铣削编程，特别是以“双刀位点”控制进给速度的方法，具有较大的应用推广价值。 This paper discusses the main features of the feed speed in multi-axis NC milling and gives the relevant calculation methods. These methods have been applied to multi-coordinate milling programming of complex parts such as integral centrifugal impeller and roller gear cam. Especially, the method of controlling the feed speed with “double knife point” has great application and popularization value.