下图是图纸，毛坯80的棒料，内孔30，先做大头
1号外圆粗车刀，2号外圆精车刀，3号内孔粗车，4号内孔精车。
程序如下
O1123
G99M3S500M8
G0X100Z200
T0101
G0X81Z5
Z2
G1X-0.5
G0X81Z5
Z0.2
G1X-0.5
G0X82Z5
Z0
G1X-0.5
G0X81Z3
G71U1R.5
G71P1Q2U0.3W0F.2
N1G0X75
G1Z0
X77Z-1
Z-55
X78Z-56
Z-75
X80Z-76
N2X81
G0X100Z200
G99M3S600
T0202
G70P1Q2F0.15
G0X100Z200
T0303
G0X29Z5
G71U2R.5
G71P11Q22U-.3W0F.2
N11G0X60.45
G1Z0
X58.45Z-2
Z-7
X38
X36Z-8
Z-55
N22G1X29
G0Z5
X100Z200
T0404S600
G0X29Z5
G70P11Q22F.1
G0X29
G0Z5
X100Z200
M30