参考答案

1．设工件原点在毛坯左端面中心线上
%1000 T0202(切槽刀)
TD101(外圆粗车刀) G00240.
S500M03 G01X34.F100M08
G00X52.Z92.M08 X32.
G71U1.R1. M09
G71P100Q200U0.2W0.1F150 G00X52.．
G002200. Z200.
T0404(外圆精车刀) TD303(螺纹刀)
G00 X52.Z92. M05
N100 G00X0 M00
G01280.F100 S160M03
G03X20.Z70.R10. G00X38.Z82.M08
G01X36. G92X35.1Z43.F2
Z20. X34.5
X45. X33.9
N200 Z0 X33.5
M09 X33.4
G00X52. M09
Z200. M05
X38. M02
2． 设工件原点在毛坯右端面中心线上