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复杂曲面五坐标ＮＣ加工编程的干涉检查和刀位修正是一个十分困难而又必须解决的问题。研究了一种行之有效的干涉检查方法。该方法首先对被加工的复杂曲面及运动到任意位置的刀身离散分割，用两组三角平面片集合代替被加工曲面和刀具；然后通过判断两组三角片是否相交以及对相交三角片的几何求交计算，来检验加工曲面是否和刀具发生干涉；并针对不同的干涉情况，给出相应的刀位修正方法。实际应用表明该方法是行之有效的。
Complicated Surfaces Five Coordinates NC Machining Interferometric inspection and tool bit correction are a difficult and must-have problem. An effective method of interference checking is studied. The method first discretely processes the complex curved surface and the blade moving to an arbitrary position, and uses two sets of triangular planar plates instead of the machined surface and the tool. Then, by judging whether the two triangular plates intersect and the geometrical requirements of the intersecting triangular plates Hand over the calculation, to test whether the machining surface and the tool interference; and for different interference situations, given the knife position correction method. The practical application shows that the method is effective.