图5.5-1

T1 球头铣刀Ø12。
N10 G40 G49 G80 G17 M06 T1 ；换 Ø20 钻头，固定循环取消
N20 G54 G90 G00 X0 Y0 ；选择G54 工件坐标系
N30 G43 H1 Z50 ；调用长度补偿
N40 Z2 M03 S800
N50 G1 Z-10 F200
N60 G41 X25.0 Y55.0 D1 ；刀具半径左偏补偿
N70 Y90.0
N80 X45.0
N90 G03 X50.0 Y115.0 R65.0
N100 G02 X90.0 R-25.0
N110 G03 X95.0 Y90.0 R65.0
N120 G01 X115.0
N130 Y55.0
N140 X70.0 Y65.0
N150 X25.0 Y55.0
N160 G00 G40 X0 Y0 ；取消刀具半径左偏补偿

N170 Z100
N180 M5
N190 M30

图5.5-2

例题二

图5.5-3

N10 G40 G49 G80 G17 M06 T1 ；换 Ø20 钻头，固定循环取消
N20 G54 G90 G0 X-80 Y-80 ；调用G54 工件坐标系，移动到孔位
N30 G43 H1 Z50
N40 M3 S800
N50 M8

N60 G99 G83 Z-30 R1 Q2 F200 ；深孔钻削循环
N70 G91 X40 K4 ；重复钻削
N80 Y80
N90 G91 X-40 K4
N100 Y80
N110 X40 K4
N120 G80 G90 G0 Z50 ；固定循环取消
N130 M5 M9
N140 G91 G28 Z0 Y0
N150 M30

例题三

N010 G94 G54 G90 G0 X0 Y0
N020 G43 Z50 H1
N030 M3 S1000
N040 M8
/N050 M95 ；选择X 坐标镜像
/N060 M96 ；选择Y 坐标镜像
N070 G0 X-100 Y-100
N080 G81 Z-30 R1 F200
N090 G80 G0 Z50
N100 M94 ；取消镜像
N110 M5 M9
N120 G91 G28 Z0 Y0
N130 M30

图5.5-4