计算机辅助设计 第三次研究性教学..docx

产品数据交换标准一、研究性专题内容简介1. 利用MasterCAM软件，以立方体为例，分析线框、表面、实体、特征建模所形成IGES的数据，编制计算机程序从IGES格式中提取数据绘制出该立方体，打印出程序和相应的模型，立方体尺寸按下式确定：长：3a；宽：2a；高：aa=20+(n-1)； n：分组序号2. 以上述立方体为例，分别采用DXF、IGES、STEP数据交换格式，实现MasterCAM、AutoCAD、SolidEdge软件之间的几何图形转换，说明转换步骤，并打印各自的截面图形3. 绘制右图所示的图形，尺寸按下式确定：长：3a；宽：2a；高：a；圆柱直径：4/3a；圆柱高：2/3a，其中，a值按照式(1)计算分析IGES数据结构中的主要数据参数数据提交报告，报告中要体现本组的分工，具体到每个成员二、利用MasterCAM软件，以立方体为例，分析线框、表面、实体、特征建模所形成IGES的数据，编制计算机程序从IGES格式中提取数据绘制出该立方体，打印出程序和相应的模型线框建模：保存成IGES文件：S00000011H,,1H;,20HMASTERCAM version X5,14H线模.MCX-5,11HMASTERCAMX5,1H1,16,G0000001 框建8,24,8,56,,1.,2,2HMM,1,0.01,13H110417.124323,0.00005,100.,,,8,0,;G0000002406 1 1 1 1 0 00000300D0000001406 0 1 1 15 0D0000002116 2 1 1 1 000000000D0000003116 0 3 1 0 0D0000004116 3 1 1 1 0 00000000D0000005116 0 3 1 0 0D0000006116 4 00000000D0000007116 0D0000008116 5 00000000D0000009116 0D0000010116 6 00000000D0000011116 0D0000012116 7 00000000D0000013116 0D0000014116 8 00000000D0000015116 0D0000016116 9 00000000D0000017116 0D0000018110 10 00000000D0000019110 0D00000201 0 1 0 1 0 1 0 1 0 1 0 1 0 31 1 3 1 1 3 1 1 3 1 1 3 1 1 3 1 1 3 1 1 3 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0110 11 1 1 1 0 00000000D0000021110 0 3 1 0 0D0000022110 12 1 1 1 0 00000000D0000023110 0 3 1 0 0D0000024110 13 00000000D0000025110 0D0000026110 14 00000000D0000027110 0D0000028110 15 00000000D0000029110 0D0000030110 16 00000000D0000031110 0D0000032110 17 00000000D0000033110 0D0000034110 18 00000000D0000035110 0D0000036110 19 00000000D0000037110 1 0 1 0 1 0 1 0 1 0 1 0 1 0 41 1 3 1 1 3 1 1 3 1 1 3 1 1 3 1 1 3 1 1 3 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 00D0000038110 20 1 1 1 0 00000000D0000039110 0 3 1 0 0D0000040110 21 1 1 1 0 00000000D0000041110 0 0D0000042 406,1,15HUnnamed 1P0000001116,0.,0.,0.; 3P0000002116,0.,0.,24.; 5P0000003116,0.,48.,0.; 7P0000004116,0.,48.,24.; 9P0000005116,72.,0.,0.; 11P0000006116,72.,0.,24.; 13P0000007116,72.,48.,0.; 15P0000008116,72.,48.,24.; 17P0000009110,0.,0.,0.,0.,0.,24.; 19P0000010110,0.,0.,24.,0.,48.,24.; 21P0000011110,0.,48.,24.,0.,48.,0.; 23P0000012110,0.,48.,0.,0.,0.,0.; 25P00000133 Level51 0 1;110,72.,0.,0.,72.,0.,24.;27P0000014110,72.,0.,24.,72.,48.,24.;29P0000015110,72.,48.,24.,72.,48.,0.;31P0000016110,72.,48.,0.,72.,0.,0.;33P0000017110,0.,0.,0.,72.,0.,0.;35P0000018110,0.,48.,0.,72.,48.,0.;37P0000019110,0.,0.,24.,72.,0.,24.;39P0000020110,0.,48.,24.,72.,48.,24.;41P0000021S0000001G0000002D0000042P0000021 T0000001IGES数据分析：该图形所用到的相关的元素代号极其数据格式如下：组成元素：8个点（116）、12条直线（110）开始段（字母代号S）1行，全局段（字母代号G）2行，元素索引段（字母代号D）42行，参数数据段（字母代号P）21行和结束段（字母代号T）1行在数据段，8个116后面3个数据分别代表长方体8个顶点的坐标。

12个110后的数据表示长方体12条边，每条边有两个点的坐标表示8个顶点12条边组成了线框模型表面建模：保存成IGES文件：S00000011H,,1H;,20HMASTERCAM version X5,14H表模.MCX-5,11HMASTERCAMX5,1H1,16,G0000001 面建8,24,8,56,,1.,2,2HMM,1,0.01,13H110416.193909,0.00005,100.,,,8,0,;G0000002406 1 1 1 1 0 00000300D0000001406 0 1 1 15 0D0000002116 2 1 1 1 0 00000000D0000003116 0 3 1 0 0D0000004110 3 1 1 1 001000000D0000005110 0 3 1 0 0D0000006110 4 1 1 1 0 01000000D0000007110 0 3 1 0 0D0000008110 5 01000000D0000009110 0D0000010110 6 01000000D0000011110 0D0000012110 7 01000000D0000013110 0D0000014110 8 01000000D0000015110 0D0000016110 9 01000000D0000017110 0D0000018110 10 01000000D0000019110 0D0000020110 11 01000000D0000021110 0D00000221 0 1 0 1 0 1 0 1 0 1 0 1 0 81 1 3 1 1 3 1 1 3 1 1 3 1 1 3 1 1 3 1 1 3 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0110 12 1 1 1 0 01000000D0000023110 0 3 1 0 0D0000024110 13 1 1 1 0 01000000D0000025110 0 3 1 0 0D0000026110 14 01000000D0000027110 0D0000028128 15 00000000D0000029128 0D0000030128 17 00000000D0000031128 0D0000032128 19 00000000D0000033128 0D0000034128 21 00000000D0000035128 0D0000036128 23 00000000D0000037128 0D0000038128 25 00000000D0000039128 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 3 1 3 1 3 1 3 1 3 1 3 1 3 91 1 1 2 1 2 1 2 1 2 1 2 1 2 0 0 0 0 0 0 0 0 0 0 0 0 0 00D0000040406,1,15HUnnamed1P0000001 Level 1;116,24.,36.,0.; 3P0000002110,0.,0.,0.,0.,72.,0.; 5P0000003110,48.,0.,0.,48.,72.,0.; 7P0000004110,0.,0.,24.,0.,72.,24.; 9P0000005110,48.,0.,24.,48.,72.,24.; 11P0000006110,0.,0.,0.,48.,0.,0.; 13P0000007110,0.,72.,0.,48.,72.,0.; 15P0000008110,0.,0.,24.,48.,0.,24.; 17P0000009110,0.,72.,24.,48.,72.,24.; 19P0000010110,0.,0.,0.,0.,0.,24.; 21P0000011110,0.,72.,0.,0.,72.,24.; 23P0000012110,48.,0.,0.,48.,0.,24.; 25P0000013110,48.,72.,0.,48.,72.,24.; 27P0000014128,1,1,1,1,0,0,1,0,0,0.,0.,1.,1.,0.,0.,1.,1.,1.,1.,1.,1.,0.,0.,29P00000150.,0.,72.,0.,48.,0.,0.,48.,72.,0.,0.,1.,0.,1.;29P0000016128,1,1,1,1,0,0,1,0,0,0.,0.,1.,1.,0.,0.,1.,1.,1.,1.,1.,1.,0.,0.,31P00000170.,48.,0.,0.,0.,0.,24.,48.,0.,24.,0.,1.,0.,1.;31P0000018128,1,1,1,1,0,0,1,0,0,0.,0.,1.,1.,0.,0.,1.,1.,1.,1.,1.,1.,48.,。