N0010 G59 X0 Z100 设置工件原点
N0020 G90
N0030 G92 X55 Z20 设置换刀点
N0040 M03 S600
N0050 M06 T01 取1号90°偏刀，粗车
N0060 G00 X46 Z0
N0070 G01 X0 Z0
N0080 G00 X0 Z1
N0090 G00 X41 Z1
N0100 G01 X41 Z-64 F80 粗车φ40㎜外
