In rough cut of NC milling of helicoid, there are many defects when the generic programming means, for example,longer cutting time,inefficient , exigent tools are used.

• 在螺旋曲面的数控粗加工中,采用一般的编程方法得到的刀具路径在实际应用中存在加工时间长、效率低、对刀具要求高等缺点。