设粗加工分三刀进行，第一刀后留给剩下两刀的总余量X向和Z向均为单边14mm三刀完毕，留给精加工的余量X方向(直径上)为4.0mm;Z向为2.0mm粗加工进给量为0.3mm/r主轴转速为500r/min精加工进给量为0.15mm/r主轴转速为800r/min完成上述加工的程序如下：

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N01 G92 X260.0 Z220.0

N02 G00 X220.0 Z160.0

M03 S800

G95 F0.30 (转进给)

N03 G73 U14.0 K14.0 R3 P04 Q09 G91 X4.0 Z2.0 F0.30 S500

N04 G00 X80.0 W-40.0

N05 G01 W-20.0 F0.15 S800

N06 X120.0 W-10.0

N07 W-20.0

N08 G02 X160.0 W-20.0 I20.0

N09 G01 X180.0 W-10.0

N10 G94 F1000

N11 G01 X260.0 Z220.0

N12 M05

N13 M30