2017年电大电大数控编程技术形成性考核册答案(全)

X100Z150 M30 掉头 G26 G0X100Z150 T44（切刀） M3S350

G0X26Z-26（R） G1X20 G0X100 Z150 T22 S1500 G0X20Z2 G1Z0F60 X24Z-2 Z-26 X26.882 G2X33Z-56.27 G1Z-60 X41Z-65 G0X100Z150 T55（螺纹刀） S250 G0X26Z3 G92X23.5Z-24P1.5 X23 X22.5 X22.3 G0X100Z150 M30 工艺： 1. 飞上平面

2. 钻中心孔 3. . 钻孔 4. 镗孔 5. 粗铣内外型腔 6. 精铣内外型腔 O0066 T1M6；

G0G54G90G40X0Y0Z100； S1500M3； G43H1Z50； G01Z5F50； Z-7；

G42X-21.5639Y-3D1F120; X-25; G2X-25Y3R3; G1X-21.5639Y3; G3X-16.8761Y6.2609R5; G2X-6.2609Y16.8761R18; G3X-3Y21.5639R5; G1Y25; G2X3R3; G1Y21.5639;

G3X6.2609Y16.8761R5; G2X16.8761Y6.2609R18; G3X21.5639Y3R5; G1X25; G2Y-3R3; G1X21.5639;

G3X16.8761Y-6.2609R5; G2X-6.2609Y-16.8761R18; G3X3Y-21.5639R5; G1Y-25; G2X-3R3; G1Y-21.5639;

G3X-6.2609Y-16.8761R5; G2X-16.8761Y-6.2609R18;

G3X-21.5639Y-3R5; G1X-25; G0Z100; X45Y-45; G0Z50; G01Z-5F80; G41X0Y-30D1F120; G51.1X0Y90; X-2Y-30; G2X-5Y-27R3; G1Y-22.9129; G3X-8Y-18.3303R5; G2X-18.3303Y-8R20; G3X-22.9129Y-5R5; G1X-27Y-5; G2X-30Y-2R3; G1Y2; G2X-27Y-5R3; G1Y5;

G3X-18.3303Y8R5; G2X-8Y-18.3303R20; G3X-5Y22.9129R5; G1X-5Y27; G2X-2Y30R3; G1X0Y30; G50.1; X-35; G01Z-10F50; G51.1X0Y90; X-22Y-35; G2X-25Y-32R3; G1Y-28; G3X-28Y-25R3; G1X-32Y-25; G2X-35Y-22R3; G1Y22; G2X-32Y25R3; G1X-28Y25;

G3X-25Y28R3; G1X-25Y32; G2X-22Y-35R3; G1X0Y35; G50.1Z100; M5; M00 T2M6;

G0G54G90G40X0Y0; S1000M3; G43H2Z50; G81X-33Y-33Z-2R5; X33Y33; G80Z100; M5; M00; T3M6;

G0G54G90G40X0Y0; G43H3Z50;

G83X-33Y-33Z-25R5Q-4F50; X33Y33; G80Z100; M5; M30

图2-3 典型铣削零件

第3章 数控编程中的数学处理 一、填空题

1、各几何要素之间的连接点称为_____基点________。

2、用若干直线段或圆弧来逼近给定的非圆曲线，逼近线段的交点称为________节点_____。

3、在_____列表_________中给出的点坐标称为型值点。 二、选择题

1、在要求允许误差不变的情况下，非圆曲线的曲率越大，则逼近线段的数量越（b）。 （A）小（B）大（C）不变（D）以上均不正确 2、非圆曲线节点坐标的计算，主要是由（b）完成。 （A）设计人员（B）计算机（C）手工（D）操作者