运用点涉法原理，针对平头立铣刀的特殊形状，提出了在空间自由曲面的数控编程中，如何处理刀具过切干涉曲面的算法，并给出了该算法在微机上的应用实例 By using the principle of point method, aiming at the special shape of a flat-head end mill, an algorithm of how to deal with the overexposed interfering surface in space-free-form NC programming is put forward. The application example of the algorithm in microcomputer