车外圆的话X方向在原坐标的基础上减去两倍的刀具半径z向不变这是起点终点则x不变z减去一个刀尖半径圆弧以R20为例刀尖圆弧半径R0.4G0X0Z2G1X-.8Z0F.2G3X40.Z-20.4R20F.15G1X42Z-21G0X300Z500建议用刀补如下G0X0Z2G1G42X0Z0F.2G3X40.Z-20R20F.15G1X42Z-21G40G0X300Z500
