There are commonness and individuality between subdivision surface and spline surface , based on the research of the algorithm of nc tool path generation for spline surface , used in conjunction with subdivision property , two methods : cross - section method and projecting method are put forward . ( 4 ) subdivision surface is quite adaptive to arbitrary topology , so the subdivision surface reconstruction techniques has also received much attention 细分曲面和样条曲面既具有共性,又各有个性,本文通过对样条曲面数控加工刀轨生成算法进行研究,同时根据细分曲面本身具有的特性,给出了采用截平面法和投影法生成细分曲面数控加工刀轨的算法。