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2022年18春西南大学0918《工程制图III》作业答案 .pdf

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1、1、在半剖视图中半个视图与半个剖视图的分界线用（）。1.波浪线2.细点画线3.细实线4.粗实线2、用 5:1 的比例画机件,若图纸上该机件长30,则该机件实际长度为（）。1.A.6 2.30 3.150 4.5 3、局部剖视图选用的是（）剖切面。1.几个相交的2.其它3.几个平行的4.单一4、半剖视图选用的是（）剖切面。1.几个相交的2.其它3.几个平行的4.单一5、机件向不平行于任何基本投影面的平面投影所得的视图叫1.E.斜视图2.向视图3.基本视图4.局部视图6、六个基本视图中最常用的是（）视图。1.主、右、仰2.主、俯、左3.主、左、仰4.后、右、仰7、在局部剖视图中，视图与剖视部分的分

2、界线用（）。1.细实线2.细点画线3.波浪线4.粗实线判断题8、图纸中轮廓线用细实线表示1.A.2.B.9、上、下偏差可正、可负、可为零1.A.2.B.10、标题栏一般位于图纸的右上方。1.A.2.B.11、左视图是零件从左到右的投影。1.A.2.B.12、物体两表面相切处不画线。1.A.2.B.13、剖视图中，金属材料的剖面符号采用45 度细线。1.A.2.B.文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10

3、ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10

4、 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V1

5、0 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V

6、10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9

7、V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M

8、9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10

9、M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z1014、绘制圆的中心线时，用粗实线表示。1.A.2.B.主观题15、如何求平面立体的投影？以及平面立体表面上点和线的投影？参考答案：绘制平面立体的投影，可归结为绘制它的所有多边形表面的投影的边和顶点的投影。只要求出平面立体顶点的投影，连接成线，就是边，边面。所有面的投影出来了，则平面立体的投影就求出来了。作

10、平面立体表面上的点和线的投影，就是作它的多边形表面上的点上的点和线的投影。利用点和直线在平面上的几何条件来求解。16、两直线有哪三种相对位置?试分别叙述它们的投影特性。参考答案：两直线位置关系有相交、平行、交叉。平行两直线相平行。相交两直线三对同面投影都相交，同面投影的交点符合一交叉两直线既不符合平行两直线的投影特性，又不符合相交两直线17、试述点的三面投影特性参考答案：1）点的正面投影和水平投影的连线垂直于OX轴，即aaOX；投影的连线垂直于OZ轴，即aaOZ；点的水平投影和点的侧面投段，一段为aayh,另一段为aayw，同时aayhOYH，aaywOYW，两者上。点的投影到投影轴的距离，反

11、映空间点到以投影轴为界的另一投影aaZ=Aa=aayh=x 坐标；aaX=Aa=aaZ=y 坐标；aaX=Aa=a ayw=z 坐18、一般位置直线、投影面平行线、投影面垂直线分别有哪些投影特性？文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10

12、 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V1

13、0 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V

14、10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9

15、V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M

16、9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10

17、M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J1

18、0M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10参考答案：1）一般位置直线的投影三个投影都倾斜于投影轴，投影长度小于投影轴的夹角，不反映直线对投影面的倾角。2）投影面平行线在平行的投影面上的投影，反映它的真长；投影别反映了该直线对另两投影面的真实倾角。在另两投影面的投影，平行与短。3）投影面垂直线与直线垂直的投影面的投影，积聚成一个点；在影，平行于相应的投影轴，反映真长。19、如何求曲面立体的投影？以及曲面立体表面上点和线的投影？参考答案：曲面立体的投影是它所有曲面和平面的投影，也就是它的轮廓线，尖点作曲面立体表面上的

19、点和线的投影，就是作它的曲面或平面表面上的点和线的作平面上的点相类似；作曲面上的线，除了曲面上可能存在的直线以及平行于图外，通常是作出线上的很多点连成的。垂直于投影面的柱面在这个投影面上上的点和线的投影，都积聚在柱面的有积聚性的同面投影上；在其他曲面上取曲面上作一条线，然后在这条线的投影上，作出该点的同面投影，若曲面上存的圆，则应利用它们作图就简捷得多。20、如何求曲面立体表面上点和线的投影？参考答案：作曲面立体表面上的点和线的投影，就是作它的曲面或平面表面上的点和线的投影。作曲面上的点与作平面上的上可能存在的直线以及平行于投影面的圆可以直接作图外，通常是作出线上的很多点连成的。垂直于投影面的

20、柱面在上的点和线的投影，都积聚在柱面的有积聚性的同面投影上；在其他曲面上取点时，常常通过该点在曲面上作一条线的同面投影，若曲面上存在直线或平行于投影面的圆，则应利用它们作图就简捷得多。21、公差带代号由哪两个代号所组成？参考答案：公差带代号由两个代号所组成：由基本偏差代号与公差等级数字表示文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M

21、9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10

22、M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J1

23、0M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J

24、10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3

25、J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B

26、3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6

27、B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z1022、作曲面立体的截交线的步骤？参考答案：1）作截交线的步骤（1）求特殊点特殊点是一些能确定截交线形状和范围的点，包括转向轮廓线上轴上的顶点；极限位置点。（2）求一般点为了能光滑地作出截交线的投影，还需在特殊点之间再作一些中间点。（3）判别可见性并光滑连线23、平面与圆锥面的交线有哪五种情况？圆锥面的三个投影都没有积聚性，可面上取点来求作截交线？参考答案：平面与圆锥的交线有5 种

28、情况（1）截平面垂直于轴线，交线为于轴线，且，交线为椭圆；（3）截平面倾斜于轴线，且=，交线为斜于轴线，且，或平行于轴线（=00），交线为双曲线；（5）截平面顶的两条相交直线。可以利用素线法和纬圆法在圆锥面上取点的方法来求作截交线。24、投影法分为哪两类？参考答案：投影法分为中心投影法和平行投影法。25、平面与球面的截交线是什么？试分别叙述当截平面平行、垂直和倾斜于文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10

29、 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V1

30、0 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V

31、10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9

32、V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M

33、9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10

34、M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J1

35、0M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10面的交线的投影情况。为什么在球面上只能用纬圆法？参考答案：（1）平面与球面的截交线是圆；(2)当截平面平行于投影面时，平面与球面的交线的投影为圆；当截平面垂与球面的交线的投影为一条直线，为圆的直径；当截平面倾斜于投影面时投影为椭圆，椭圆的长轴为平行于投影面的直径。(3)球面是曲面，没有直线存在，所以只能

36、用纬圆法。26、当直线或平面对投影面处于特殊位置时，怎样求作直线与平面的交点，怎样判断它们的同面投影重合处的可见性？参考答案：相交 1）直线与垂直于投影面的平面相交，平面的有积聚性投影的交点，就是交点的一个投影，从而可以作出交点的其他投影；并可线投影的可见性。2）平面图形与垂直于投影面的平面相交，可以作出前者的任两直线与后者线；并可在投影图中直接判断投影重合处的可见性。3）投影面垂直线与平面的交点的一个投影，就积聚在该直线的积聚成一点的投影可按平面上取点的方法作出；并可用交叉线的重影点来判断直线投27、什么是多面正投影或多面正投影图？参考答案：物体在互相垂直的两个或多个投影面上得到正投影之后，

37、将这些投影面上，使该物体的各正投影图有规则地配置，并相互之间形成对应关系为多面正投影或多面正投影图。28、文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 Z

38、Y8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10

39、ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10

40、 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V1

41、0 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V

42、10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9

43、V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M

44、9V10 ZY8E5X6M4Z10平面与圆柱面的交线有哪三种情况？为什么用表面取点、取线的方法就能简捷地作出轴线垂直于投影面的圆柱的参考答案：1）平面与圆柱相交有三种情况：（1）截平面平行于轴线，交线为平行于轴线的两条直线。（2）截平面垂直于轴线，线，交线为椭圆。2）主要利用了轴线垂直于投影面的圆柱面在该投影面上的投影为一个圆。29、如何求作平面与平面立体的截交线？怎样作出由平面与平面立体相交而孔的立体的投影图？参考答案：平面立体的截交线是截平面上的一个多边形，它的顶点是平面立平面的交点，它的边是截平面与平面立体表面的交线。在形状较为复杂的机件上，有时会见到由平面与平面立体相交而形成的具要逐个

45、作出各个截平面与平面立体的交线，并画出截平面之间的交线，就立体的投影图。30、直线上的点的投影特性？参考答案：直线上点的投影，必在直线的同面投影上。不垂直于投影面的直线段上的点，分割直线段之比，在投影图上仍保持不变。31、相贯线的作图步骤是什么？求作两回转体表面的相贯线常用哪两种方法聚性法作相贯线？参考答案：（1）相贯线的作图步骤求特殊点特殊点是一些能确定相贯线形状和范围的点，如转向轮贯线在对称面上的点，极限位置点。求一般点为了能光滑地作出相贯线投影，还需在特殊点之间再作判别可见性并光滑连线只有同时位于两立体可见表面上的相贯线（2）求作两回转体的相贯线常用积聚性法和辅助平面法。（3）两回转体相

46、交，如果其中有一个是轴线垂直于投影面的圆柱，则相贯影，就积聚在圆柱面的有积聚性的投影上，于是，求圆柱和另一回转体的作是已知另一回转体表面上的线的一个投影，求作其他投影的问题。这样文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M

47、4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6

48、M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X

49、6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5

50、X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E5X6M4Z10文档编码:CD9E5F2Z8F7 HV6B3J10M9V10 ZY8E

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