先用G81钻孔
G92 X0 Y0 Z50
G91 G00 Y40 M03
G98 G81 X40.0 Z-12.0 R-48.0 L4 F100
G00 Y50
G98 G81 X-40.0 Z-12 R-48 L4
G80 X0 Y0
M05
再用G84攻丝
G91 G00 Y40 M03
G99 G84 X40.0 Z17.0 R43.0 L4 F280(螺距为2、主轴转速为140r/min)
G00 Y50.0
G99 G84 X-40.0 Z-17 R-43 L4
G80 Z43.0
X160.0 Y90.0
M05
M30