A new approach based on cubic polynomial and B spline interposition to rebuild the CAM generated tool path under real time condition is presented in the paper.

• 本文采用三次参数样条曲线和B样条曲线来实时重构CAM生成的走刀轨迹，以少量的数据点便能达到比直线和圆弧插补高得多的加工精度。