Q=3mm?50mm?0.15mm/z?4?600r/min1000=5
3
/min
(3) P=54=2.7kw
20注:铣削45钢材料,每分钟切掉20cm,所用功率相当
于1kw,此为常识,故可用此计算.答案在2.2～3.2kw范围。
四、综合题（共20分）
综合题（一）
1. 简要说明零件在数控加工中心加工的工艺过程, 并
列出所用刀具；(7分)
2. 合理设置加工坐标系并计算节点；(5分) 3. 编制外形和槽的加工程序。(8分)
3
1、加工工艺过程:(略) (数控加工工艺及所用刀具相对经济合理)
N055 (CAO)
2、计算节点 （略）N056 G0 G91 G28 Z0.
T4 M6
(加工坐标系设置N057 S550 M3
N058 G0 G90 G17
较合理,有关键点G57 Z180.
N059 G68 X0. Y0. R30. 的计算过程)
N060 G0 X-61. Y-8. N025 M00
N026 G3 Y-40. CR=115. N027 M00
N028 G1 X10. N029 G3 X40. Y-10. CR=30.
N030 G2 X50. Y0. CR=10.
3、数控程序参考答案 %
O1001 (FANUC) N013 (WAI XING) N014 T3 M6 G0 G91 G28 Z0. N015 S300 M3 N016 G54 G0 G90 G17 Z180. X50. Y-30. N017 Z30. N018 G1 Z-20. F30 N019 M8 N020 G42 D001 N021 G1 X40. N022 Y35. N023 G3 X35. Y40. R5. N024 G1 X-57.819 N025 M00 N026 R115. G3 Y-40. N027 M00 N028 G1 X10. N029 R30. G3 X40. Y-10. N030 G2 X50. Y0. R10. N031 G40 G1 X60.876 N032 G0 Z50. N033 M09 N034 G0 Z180. N035 M00 N061 Z5.
N062 G1 Z-20. F30
N063 M8
N064 G42 D001
N065 G1 Y0. F30. N066 G1 Z0. N067 G2 X-55. Y6.
R6. N068 G1 X-52. N069 G2 Y-6. R6. N070 G1 X-58. N071 G2 Y6. R6. N072 G1 X-55. N073 G2 X-49. Y0. R6. N074 G0 Z50. N075 G1 Y-8. G40 N076 M09 G69 N077 G0 Z180. N103 M30 %
;SIEMENS ;N013 (WAI XING) N001 T2 N002 M6
N003 S120 M3 N004 G94 G21 G40 G0 G17 G90 N017 Z180. G55 X50. Y-30. N017 Z30.
N018 G1 Z-20. F30 N019 M8
N020 G42 D001 N021 G1 X40. N022 Y35. N023 G3 X35. Y40. CR=5. N024 G1 X-57.819
N031 G40
G1 X60.876 N032 G0 Z50. N034 G0 Z180. N035 M00 ;N055 (CAO) N001 T2 N002 M6
N003 S120 M3
N004 G94 G21 G40 G0 G17 G90 N059 ROT Z30. N060 G57 G0 X-61. Y-8. N061 Z5.
N062 G1 Z-20. F30 N063 M8
N064 G42 D001 N065 G1 Y0. F30. N066 G1 Z0.
N067 G2 X-55. Y6. CR=6.
N068 G1 X-52. N069 N070 G1 X-58. G2 Y-6. CR=6. N071 G2 Y6. CR=6. N072 G1 X-55. N073 G2 X-49. Y0. CR=6.
N074 G0 Z50. N075 G1 Y-8. G40 N076 R0T
N077 G0 Z180. N103 M30 %
综合题（二）
1、如图为某零件，
试编制精加工的数控程序。要求：
（1）、求出图中切点C的坐标；(5分)
（2）、刀具用?10mm圆柱铣刀，从指定点用圆弧R8进（退）刀，
Y(0,60)(20,60)采用逆铣加工方式，用左（或右）补正方式编程，程序换刀指令、切削液开关指令等代码完整。(7分)
R15R15(50,25)进（退）刀点X(0,0)(25,0)(50,0)C
答案：（1）C(62,16)
(2)参考程序
％
O1001(FANUC系统) G0G40G28X0.Y0.Z0.; T1M6;
G0G90G54X25.Y-15.; ; G0G43H1Z100.S800M3; Z10.;
N1G1Z0.F1000M8; G1G42D1X17.Y-8.F500G2X25.Y0.R8.F100;
G1X50.; X62.Y16.;
G3X50.Y40.R15.; G1X35.;
G2X20.Y55.R15.; G1Y60.; X0.; Y0.; X25.;
G2X33.Y-8.R8.;
G1G40X33.Y-15.F500.G0Z100.M9 M5 M30; %
;
2、补视图，根据已有两视图，补画第三视图（1补俯
视图、2补左视图）。(每图4分)