各位大神，我刚学数控编程，有两道体不会做，求教！！

题一编程：
O0001
G50X100.Z100.
G99G90G97
T01
M03S500M07
G00X35Z5
G71U1.R2.
G71P1Q2U0.5Z0.3F0.25
N1G01X.Z5.F2.S1200
Z0.F0.15
X15.
X20.Z-15.
G03X20.W-10.R10
G01X20.Z-36.
G02X28.Z-40.R4
G01X28.Z-57.
N2X35.
G00X100.Z100.M09
M05
M30
二；O0002
G50X100，Z100.
G99G97G90
T01
M03S500M07
G00X35.Z5.
G71U1.R2.P1Q2U0.5W0.3F0.25
N1G01X.Z5.F2.S1200
Z.F0.15
X20.C1.5
Z-25.
X28.C1.
N2X35.
G00X100.Z100.M05M09
M30(先加工左边，用二程序加工左边，一程序再加工右边）

图二
O0003
G50X100.Z100.
G99G97G90
T01
M03S500M07
G00X35.Z5.
G71U1.R2.P1Q2U0.5Z0.3F0.25
N1G01X.Z5.F2.S1200
Z.F0.15
X25.C2.
Z-20.
G03X25.Z-35.R8
G02X25.Z-50.R10
G01Z-60.
X30.
Z-65
N2X35.
G00X100Z100M09M05
M30

只编最后一道精加工成型程序，刀具所走的轨迹，刀具的选择你自己斟酌
G1 X15 Z0 F100;
X20 Z-15;
G3 X20 Z-25 R10 F100;
G1 Z-76 F100;
G2 X28 Z-80 R4 F100;
G1 Z-54 F100;
X26 Z-55;
X20;
Z-78.5;
X17 Z-80;

G1 X21 Z0 F100;
X25 Z-2;
Z-20;
G3 X25 Z-35 R8 F100;
G2 X25 Z-50 R10 F100;
G1 Z-60 F100;
X30;
Z-80;