G71U2R0.5

G71P1Q2U2W0.05F0.2 N1G00G42X20 G01X26Z-1 T0100 T0101 S1200MO3 G00X62Z2 G70P1Q2F0.12 G00X100Z100 M05 M30

3.

3号图 O1 T0101 M03S800 M08 G00X47Z2 G71U2R0.5 G71P1Q2U2F0.2 N1G00X0G42 G01Z0 G03X10Z-5R5 G01X20 G01W-10 G03X30W-5R5 G01W-10 G01X40W-12 G01W-18 N2G01X47G40

G00Z2 G00X100Z100 T0100 T0101 G00X47Z2 G70P1Q2G0.12 G00X100Z100 T0202 M03S400 G00X42Z-55 G75R0.3

G75X4Z-55P5000F0.1 G00X100 Z100 M05 M30

4.

O1 T0101 M03S800 M08 G00X65Z2 G71U2R0.5 G71P1Q2U2F0.2 N1G00X46.785G42 G01Z0 G01X50Z-6 G01X56 G01Z-20 G01X58

G01X60Z-21 G01Z-40 N2G01X65G40 G00Z2 G00X100Z100 T0100 T0101 G00X65Z2 G70P1Q2G0.12 G00X100Z100 T0202 M03S400 G00X62Z-35 G75R0.2

G75X4Z-35P5000F0.1 G00X100 Z100 M05 M30

5.

O1 T0101 M3S800 M08 G00X65Z2 G73U32R16 G73P1Q2F0.2 N1G00X30G42

G01Z-10 G01X28W-3 G01W-4 G01X30W-3 G01W-12 G02X36W-3R3 G01X40 G01W-10 G01X60 G01Z-70 G01X65 N2G00Z2 G00X100Z100 T0100 T0101 M03S1100 G00X65Z2 G70P1Q2G0.1 G00X100Z100 T0202 M03S400 G00X62Z-65 G75R0.2

G75X4Z-65P5000F0.1 G00X100 Z100 M05 M30

6．用数控车床加工如图所示零件，材料为45号钢调质处理，毛坯的直径为40mm，长度为200mm。按要求完成零件的加工程序编制。

（1） 粗加工程序使用固定循环指令；

（2） 对所选用的刀具规格、切削用量等作简要工艺说明； 加工程序单要字迹工整