For each facet overlapped by the tool projection region, the CL point was calculated by the cutter contract points with the vertexes, sides and the plane, finally the tool path was obtained.

• 针对与刀具投影区叠加的每个三角片，计算其平面、顶点、三条边与刀具的接触点来计算最终的刀位点，得到刀具运动轨迹。