电大机械CAD作业

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1、专业好文档机械CAD/CAM 平时作业一一、填空题(每空2分，共20分)1.在创成式CAPP系统中进行逻辑决策的两种常用方法为_和_.2.对话框中最常用的两个退出按扭是_、_.3.零件分类方法中的编码分类法可以细分为_法、_法和_法.4.柔性制造系统是由_系统、_系统和_系统三大部分组成的.二、单项选择题(第小题4分,共24分.从供选择的答案中选出正确的答案,将其编号添入括号内)1.在派生式CAPP系统中利用分类编码进行零件分类成组的主要依据是( )A. 零件的材料B. 特征矩陈C. 典型工艺D. 零件的种类2.在CIMS中,物料需求计划简称为( )A. MRPB. MAP1.0C. MRP-

2、IID. MRP-III3. (*20(+5 2)的运行结果为( )A. 10B. 60C. 140D. 1004.下述CAD/CAM过程的操作中,属于CAD的范畴的是()A. CAPPB. CIMSC. FMSD.几何造型5.数据元素之间存储顺序与逻辑顺序一致的数据结构为()A. 线性表B. 树C. 二叉树D. 图6.在对话框构件中,按钮构件为()A. toggleB. buttonC. imageD. slider三、简答题(共30分)1. 指出数控加工中的绝对坐标系统和相对坐标系统的主要不同点.(6分)2. 简述图标菜单的主要特点.(5分)3. 简述CIMS的组成.(10分)4. 与传统

3、的工艺设计相比CAPP有何优点?(9分)四、阅读理解题(共10分)绘出下述文件所描述的对话框在屏幕上显示的内容h:dialog lable = “螺纹要素”:popup_listkey= “test_popup_box”;edit_width=20label= “要素”;list= “牙形n大径n旋向n线数n螺距”;ok_cancel;五、编程题(共16分)用AutoLISP语言编写一个名为“tuxing”的自定义函数。要求执行此函数时使用键盘输入两个同心圆的圆心坐标和每个圆的半径值，然后自动绘出这两个圆和与圆同心的正方形（边长等于大圆的直径）。机械CAD/CAM 平时作业二一、填空题(每空2

4、分，共30分)1.CAD/CAM系统是由_、_和_组成的.2.数据库系统的体系结构为_模式、_模式和_模式三种.3.AutoCAD软件中屏幕菜单的标题为_.4.对话框构件 “OK”的关键字为_.5.数控机床的组成有_、_、_,辅助装置和编程机及附属设备.6.OPITZ分类编码系统的四个辅助码分别表示_、_、_和_.二、单项选择题(第小题3分,共12分.从供选择的答案中选出正确的答案,将其编号添入括号内)1.下述CAD/CAM过程的操作中,属于CAM的范畴的是()A. 几何造型B.特征造型C. GTD. 优化设计2.AutoCAD绘图软件中字符”AC”的作用是( )A. 终止正大光明进行的命令B

5、. 退格作用C. 回车D. 正交方式切换3.已知一点pt:(setq pt (list 1.0 2.0.3.0),则运行(caddr pt)的结果为()A. 1.0B. 2.0C. 3.0D. 6.04.在对话框构件中,切换开关为()A. button B. toggleC. image_button D. radio_button三、简答题(共30分)1.数据的物理结构与逻辑结构特征,它们之间的关系?(12分)2.简述线性表在计算机中的存储形式.设第一个数据元素的地址为Loc(a1),如何计算某元素的存储位置?提示:假定每个数据元素占用j个存储单元(8分)3.什么是CIMS?它的主要特征是什

6、么?(10分)四、阅读理解题(共15分)1.写出在AutoCAD编辑状态中运行函数tu时，在屏幕图形区和文本区的显示结果。（8分）（defun c: tu( / pl p2 p3 p4 x1 x2 y2 y3 x4 y4)(setq xl 40.0 yl 80.0)(setq pl (list xl yl)(setq x2(+ (car pl)40.0) y2 (cadr pl)(setq x3(car p2) y3(+ (cadr p2)(40.0)(setq p3 (list x3 y3.)(setq x4 ( car pl ) y4 (eadr p3)(setq p4 ( list x4

7、 y4 )(princ pl p2 p3 p4)(command “line” pl p2 p3 p4 p1” ”)(command “line” p2 p4”)(command “line” p1 p3”)2.绘出在AutoCAD编辑状态中下述文件在屏幕上显示的对话框内容.(7分)sample: dialoglabel= “输入圆心坐标和直径”;:edit_boxvalue= “0.00”;key= “x”;label= “X:”;:edit_boxvalue= “0.00”;key= “y”;label= “Y:”;:edit_boxvalue= “0.00”;key= “d”;label

8、= “D:”;ok_cancel;五、编程题(13分)用AutoLISP语言编写一个名为 “tuxing”的自定义函数.要求执行此函灵敏时使用键盘输入一个圆的圆心坐标和半径值,然后自动绘出该圆、与该圆在左右侧相切且直径相同的另外两个圆，以及这两个圆的圆心连线.机械CAD/CAM 平时作业三一、填空题(每空2分,共30分)1. 机械CAD专家系统求解策略包括_设计、_设计、_设计和_设计.2.在成组技术中零件分类的主要方法有_法、_法和_法.3.线性表的链式存储结构有以下两种:_链表和_链表.4.AutoCAD软件中下拉菜单的标题为_.5.FoxPro的运算类型有四种,它们是_运算、_运算、_运

9、算和_运算.6.CAD/CAM系统内部的计算机网络一般采用_网.二、单项选择题(每小题3分,共12分.从供选择的答案中选出正确的答案,将其编号添入括号内)1.下述CAD/CAM过程的操作中,属于CAM的范畴的是()A. 几何造型B. 有限元分析C. 优化设计D. CAPP2.数据元素之间存储顺序与逻辑顺序一致的数据结构为()A. 线性表B. 树C. 二叉树D. 图3.数控机床的Z坐标轴用于表示机床的()A. 主进给方向B. 主轴轴线C. 第二进给方向D. 主运动速度4.在AutoLISP中,标准表的第一个元素可以是一个()A. 合法的AutoLISP函数B. 未定义的AutoLISP函数C.

10、整型量D. 标准表三、简答题(共30分)1.指出数据结构中的二叉树与一般树的主要区别.(15分)2.什么是MRPII?它的作用是什么?(15分)四、阅读理解题(共15分)1.写出在AutoCAD编辑状态中运行函数tu时,在屏幕图形区和文本区的显示结果.(8分)(defun c: tu( / pc1 pc2 r p1 p2 p3 p4)(setq pc1 (list 50.0 50.0)(setq pc2 (list 100.0 50.0)(setq r 15.0)(setq pl (polar pc1 (/ pi 2) r )(setq p2 (polar pcl (/ (* pi 3) 2)

11、 r)(setq p3 (polar pc2(/ pi 2) r )(setq p4 (polar pc2(/ (* pi 3) 2) r)(princ pc1 pc2 r p1 p2 p3 p4)(command “arc” p1 “c” pc1 p2)(command “arc” p4 “c” pc2 p3)(command “line” pl p3”)(command “line” p2 p4”)2.绘出在AutoCAD编辑状态中下述菜单文件在屏幕上显示的两级下拉菜单的内容.(7分)* * * popll螺纹普通螺纹ccptlw梯形螺纹 cctxlw 管螺纹 ccglw公制管螺纹 ccg

12、zglw英制管螺纹 ccyzglw五、编程题（13分）用AutoLISP语言编写一个中为 “tuxing”的自定义函数.要求执行此函数时使用键盘输入一个圆的圆心坐标和半径值,然后自动绘出该圆和该圆同心的正方形(正方形对角线长度等于圆直径的2倍,且对角线为水平线).Winger Tuivasa-Sheck, who scored two tries in the Kiwis 20-18 semi-final win over England, has been passed fit after a lower-leg injury, while Slater has been named at

13、full-back but is still recovering from a knee injury aggravated against USA.Both sides boast 100% records heading into the encounter but Australia have not conceded a try since Josh Charnleys effort in their first pool match against England on the opening day.Aussie winger Jarryd Hayne is the compet

14、itions top try scorer with nine, closely followed by Tuivasa-Sheck with eight.But it is recently named Rugby League International Federation player of the year Sonny Bill Williams who has attracted the most interest in the tournament so far.The Kiwi - with a tournament high 17 offloads - has the cha

15、nce of becoming the first player to win the World Cup in both rugby league and rugby union after triumphing with the All Blacks in 2011.Id give every award back in a heartbeat just to get across the line this weekend, said Williams.The (lack of) air up there Watch mCayman Islands-based Webb, the hea

16、d of Fifas anti-racism taskforce, is in London for the Football Associations 150th anniversary celebrations and will attend Citys Premier League match at Chelsea on Sunday.I am going to be at the match tomorrow and I have asked to meet Yaya Toure, he told BBC Sport.For me its about how he felt and I

17、 would like to speak to him first to find out what his experience was.Uefa hasopened disciplinary proceedings against CSKAfor the racist behaviour of their fans duringCitys 2-1 win.Michel Platini, president of European footballs governing body, has also ordered an immediate investigation into the re

18、ferees actions.CSKA said they were surprised and disappointed by Toures complaint. In a statement the Russian side added: We found no racist insults from fans of CSKA. Baumgartner the disappointing news: Mission aborted.The supersonic descent could happen as early as Sunda.The weather plays an impor

19、tant role in this mission. Starting at the ground, conditions have to be very calm - winds less than 2 mph, with no precipitation or humidity and limited cloud cover. The balloon, with capsule attached, will move through the lower level of the atmosphere (the troposphere) where our day-to-day weathe

20、r lives. It will climb higher than the tip of Mount Everest (5.5 miles/8.85 kilometers), drifting even higher than the cruising altitude of commercial airliners (5.6 miles/9.17 kilometers) and into the stratosphere. As he crosses the boundary layer (called the tropopause),e can expect a lot of turbu

21、lence.The balloon will slowly drift to the edge of space at 120,000 feet ( Then, I would assume, he will slowly step out onto something resembling an Olympic diving platform.They blew it in 2008 when they got caught cold in the final and they will not make the same mistake against the Kiwis in Manch

22、ester.Five years ago they cruised through to the final and so far history has repeated itself here - the last try they conceded was scored by Englands Josh Charnley in the opening game of the tournament.That could be classed as a weakness, a team under-cooked - but I have been impressed by the Kanga

23、roos focus in their games since then.They have been concentrating on the sort of stuff that wins you tough, even contests - strong defence, especially on their own goal-line, completing sets and a good kick-chase. Theyve been great at all the unglamorous stuff that often goes unnoticed in the stands

24、 but not by your team-mates.It is as though their entire tournament has been preparation for the final.In Johnathan Thurston, Cooper Cronk, Cameron Smith and either Billy Slater or Greg Inglis at full-back they have a spine that is unmatched in rugby league. They have played in so many high-pressure

25、 games - a priceless asset going into Saturday.The Kiwis are a lot less experienced but winning a dramatic match like their semi-final against England will do wonders for their confidence.They defeated Australia in the Four Nations final in 2010 and the last World Cup, and know they can rise to the big occasion.