参考答案

N10 G50 X49.0 Z15.0
N20 G00 X0 Z2.0
N30 G01 X0 Z0 F0.15
N40 G03 X18.0 Z-27.0 R15.0 F0.15
N50 G02 X24.0 Z-36.0 R5.0 F0.15
N60 G01 X24.0 Z-42.0 F0.15
N70 G01 X34.0 Z-42.0 F0.15
N80 G01 X34.0 Z-52.0 F0.15
N90 G00 X44.0 Z-52.0
N100 G00 X49.0 Z19.0 (外圆面加工)
N110 T0202 (02号刀具为切断刀)
N120 G00 X38.0 Z-52.0
N130 G01 X0 Z-52.0 F0.15
N140 G00 X44.0 Z-52.0
N150 G00 X49.0 Z15.0 (切断加工)