基于GB/T 24734的三维自动标注

安恒; 闫光荣; 雷毅

基于GB/T 24734的三维自动标注

北京航空航天大学机械工程及自动化学院, 北京 100191

基金项目: 国家863高技术研究发展计划重点资助项目(2009AA043302)

详细信息

中图分类号: TP 391.72
计量
- 文章访问数: 3827
- HTML全文浏览量: 156
- PDF下载量: 622
- 被引次数: 0
出版历程
- 收稿日期: 2011-01-20
- 网络出版日期: 2012-03-30

Automatic dimensioning of 3D model based on GB/T 24734

School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

摘要

摘要: 结合制造企业对三维CAD零件尺寸自动标注的需求,探讨了以国标GB/T 24734为依据的在CAD系统中实现三维尺寸自动标注的技术.设计并实现了三维自动标注的算法,详细阐述了其相关的技术.该算法涉及零件基准识别、特征简化、表面分组、垂向投影标注以及零件特征还原等一系列技术.其中,特征简化和还原主要涉及特征和草图级别的倒角、圆角及阵列操作.为了便于尺寸的布局和识别,采用了表面分组和垂向投影标注的方法来对零件进行分解.以CAXA实体设计软件为平台,实现了上述算法,开发了自动标注模块,并验证了算法的可行性.
- 三维自动标注 /
- 特征 /
- 表面分组 /
- CAXA实体设计
Abstract: To meet the requirements of manufacturing enterprises, the automatic dimensioning of 3D model in CAD system was investigated based on the national standard GB/T 24734. The algorithms of automatic dimensioning of 3D model were proposed, and the strategies of datum recognition, features simplification, surfaces grouping, vertical projection and features restoration were described in detail. Currently, the processes of features simplification and restoration mainly deal with the blending, chamfering and array operations in both feature and cross-section levels. To make the layout and identification of dimensions much easier, the methods of surface grouping and vertical projection were applied to discompose the part. All the algorithms presented were realized and a module of automatic dimensioning was developed based on CAXA Solid. Case study shows that the strategies presented are feasible.
- automatic dimensioning /
- features /
- surface grouping /
- CAXA Solid

HTML全文

参考文献(15)

[1]	Yu K M,Tan S T,Yuen M F.A review of automatic dim-ensioning and tolerancing schemes[J].Engineering with Computers,1994,10(2):63-80
[2]	Bond A H,Ahmed S Z.Knowledge-based automatic dimen-sioning[J].Artificial Intelligence in Engineering,1989,4(1):32-40
[3]	Chen Kezhang,Feng Xinan,Lu Quansheng.Intelligent dimensioning for mechanical parts based on feature extraction[J].Computer-Aided Design,2001,13(33):949-965
[4]	Chen Kezhang,Feng Xinan,Lu Quansheng.Intelligent location-dimensioning of cylindrical surfaces in mechanical parts[J].Computer-Aided Design,2002,34(3):185-194
[5]	Li C L,Yu K M,Lee Y H.Automatic datum dimensioningfor plastic injection mould design and manufacturing[J].The International Journal of Advanced Manufacturing Technology,2006,28(3/4):370-378
[6]	陆国栋,黄长林,彭群生.基于分治思想的尺寸自动标注方法的研究与实现[J].计算机辅助设计与图形学学报,2001,13(6):1-6 Lu Guodong,Huang Changlin,Peng Qunsheng.Research onautomatic dimensioning based on divide and conquer strategy[J].Journal of Computer-Aided Design & Computer Graphics,2001,13(6):1-6(in Chinese)
[7]	肖迪.机械装配建模及零件尺寸标注自动化技术研究[D].重庆:重庆大学机械工程学院,2002 Xiao Di.The research of mechanical assembly modeling & automatic dimensioning technique on parts[D].Chongqing:College of Mechanical Engineering,Chongqing University,2002(in Chinese)
[8]	倪健红,陆国栋.基于功能语义的三维尺寸模型自动生成[J].机械设计与研究,2005,32(1):6-11 Ni Jianhong,Lu Guodong.Automatic generate of 3D dimension model based on the function semantics[J].Journal of Machine Design and Research,2005,32(1):6-11(in Chinese)
[9]	张美峰.基于特征约束的三维尺寸智能标注技术的研究[D].南京:南京航空航天大学机电学院,2005 Zhang Meifeng.Research on the technology of 3D intelligent dimension based on feature-constraint[D].Nanjing:College of Mechanical and Electrical Engineering,Nanjing University of Aeronautics & Astronautics,2005(in Chinese)
[10]	刘军强,王剑斐,马新厂,等.三维零件图尺寸的自动标注[J].西安工业大学学报,2008,28(6):526-530 Liu Junqiang,Wang Jianfei,Ma Xinchang,et al.A method of 3D-part’s intelligent dimensioning [J].Journal of Xi’an Technological University,2008,28(6):526-530(in Chinese)
[11]	孙生海.尺寸标注的合理性在工程化中的重要地位[J].机械工程师,2009,8:119-121 Sun Shenghai.The important position of rational dimensioning in engineering[J].Mechanical Engineering,2009,8:119-121(in Chinese)
[12]	GB/T 24734.1~11-2009 数字化产品定义数据通则[S] GB/T 24734.1~11-2009 Technical product documentation digital product definition data practices[S](in Chinese)
[13]	GB/T 17851-1999 形状和位置公差基准和基准体系[S] GB/T 17851-1999 Geometrical tolerancing-datums and datum system[S](in Chinese)
[14]	汤岑书,褚学宁,孙习武,等.基于几何与公差信息的加工特征识别方法[J].计算机集成制造系统,2010,16(2):256-262 Tang Censhu,Chu Xuening,Sun Xiwu,et al.Machining feature recognition based on geometry and tolerance information[J].Computer Integrated Manufacturing System,2010,16(2):256-262(in Chinese)
[15]	黄学良,陈钢,陈立平,等.标注自动布局的网格化方法[J].计算机辅助设计与图形学学报,2008,20(8):1070-1077 Huang Xueliang,Chen Gang,Chen Liping,et al.A grid partitioning method for automatic placement of dimensions[J].Journal of Computer-Aided Design & Computer Graphics,2008,20(8):1070-1077(in Chinese)