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时间:2018-11-12
《step中以文件交换形式实现产品信息交换的研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、STEP中以文件交换形式实现产品信息交换的研究
2、第13 交换结构的实例 下面以我们在PRO/E软件中所进行转换的某一曲面为例,介绍其中的B样条曲线及裁剪曲线的数据资料: ISO10303-21; HEADER; FILE_DESCRIPTION((”),’1’); FILE_NAME(’AA’,’1997-05-7T10:38:13’,(demo’),(”), ’PRO/ENGINEERBYPARAMETRICTECHNOLOGYCORPORATION,9626’, ’PRO/ENGINE
3、ERBYPARAMETRICTECHNOLOGYCORPORATION,9626’,”); FILE_SCHEMA((’CONIFG_CONTROL_DESIGN’)); ENDSEC; DATA; ┇ #62=DIRECTION(”,(-1.272870636242E-14, 7.854276517439E-2,-9.969107452720E-1)); #63=VECTOR(”,#62,8.931531177218E0); #64=CARTESIAN_POINT(”,(8.674
4、6014E2, 4.599915503441E2,8.572025894023E2)); #65=LINE(”,#63,#64); #66=TRIMMED_CURVE(”,#65,(0.E0), (1.E0),.T.UNSPECIFIED.); ┇ #7921=CARTESIAN_POINT(”,(-5.03991812500E0, -4.539907812500E0))” #7922=CARTESIAN_POINT(”,(-5.039992516259E0,
5、-4.299674908587E0)); #7923=CARTESIAN_POINT(”,(-5.005327275221E0, -3.819825597812E0)): #7924=CARTESIAN_POINT(”,(-4.851127031985E0, -3.111257755436E0)): ┇ #7942=CARTESIAN_POINT(”,(4.856179540516E0, -3.131269747094E0)): #7943=CARTESIAN
6、_POINT(”,(5.006042814167E0, -3.827996767523E0)): #7944=CARTESIAN_POINT(”,(5.039986556824E0, -4.301548659935E0)): #7945=CARTESIAN_POINT(”,(5.039911875E0, -4.539907812500E0)): #7946=B_SPLINE_CURVE_WITH_KNOTS(”,(3,(#7921,#7922,#7923,#7924,
7、#7925,#7926,#7927,#7928,#7929,#7930,#7931,#7932,#7933,#7934,#7935,#7936,#7937,#7938,#7939,#7940,#7941,#7942,#7943,#7944,#7945),.UNSPECIFIED.,.F.,.F.,(4,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,4),(0.E0,4.551245480337E-2,9.093041898227E-2,1.370559261923E-1,
8、1.831577216355E-1,2.291993295481E-1,2.751429536053E-1,3.208762258061E-1,3.666924166956E-1,4.123121266253E-1,4.579676167649E-1,5.034944433999E-1,5.489611032447E-1,5.944279222663E-1,6.396845461973E-1,6.851511645161E-1,7.301382688311E-1,7.753465259271E-1,8.203
9、310779470E-1,8.652880997545E-1,9.102616976199E-1,9.548424524915E-1,1.E0),.UNSPECIFIED.);┇ENDSEC;END-ISO-10303-21;4 结论 STEP作为产品数据交换的标准,能对各CAD系统的数据进行交换和保存;能把产品数据和制造应用程序联系起来;大型研究项目可以通过STEP使各专业小组协同工作,组成一
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