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