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解决了数控加工的干涉检查问题。数控加工的干涉检查实际上就是检查刀具曲面和被加工曲面的有向距离。根据有向距离的符号进行干涉与否的判断并由其值（极值）的大小及极值的位一进行干涉修正，利用刀具曲面是一个绕刀轴的旋转面，易抉辅度离散处理的特点，不离散（分割）待检查曲面，而离散刀具曲面，在经度方向上可用刀具轮廓线（母线）绕刀轴旋转得到的一组均通过刀尖点的曲线来逼近，在纬度方向上可用圆心在刀轴上的一组经过同一条毋线的圆来逼近。利用相邻点间的相关性，采用跟踪技术求取离散的刀具曲面嵌入被检查曲面的干涉深度及其位置。
Solve the interference of CNC machining inspection problems. CNC machining interference check is actually check the surface of the tool and the surface is processed by the directional distance. According to the directional distance between the symbol to determine whether the interference or not by its value (extreme value) and the extreme value of a bit interference correction, the use of tool surface is a rotating surface around the knife axis, (Discrete) the surface to be inspected, and the discrete tool surface, in the longitude direction can be used tool contour line (bus) around the knife axis to get a group of points through the tip of the curve to approach in the latitudinal direction A group of circles that go through the same line can be approximated by a circle whose center is on the arbor. Using the correlation between adjacent points, the tracking technique was used to get the depth and location of discrete tool surface embedded in the surface under examination.