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探索利用目前日趋成熟的分布式计算技术,解决大型复杂三维机械图形制图效率问题。以汽车设计为例,讨论了三维机械图形分解的思路和方法,提出了“共享空间+Java3D”和基于CORBA规范的对象共享分布式CAD计算模式。 相似文献
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为实现对机电行业中存在的大量标准化、系列化零件资源的集成管理与信息高度共享,综合应用.NET框架下的三维CAD系统二次开发、ADO.NET、Web3D、AJAX(异步刷新)、Web服务等系统实现使能技术,开发了面向机电行业的开放式Web三维零件资源集成库系统。首先,基于B/S模式设计了系统五层架构;而后详细介绍了零部件三维模型在线浏览与参数化驱动设计、零件资源库快速构建与动态扩展、分布异构零件库资源Web服务集成等系统主要功能模块的实现过程;最后给出了系统开发实例及其在复杂产品协同设计链中的应用模式。 相似文献
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为了提高CAD系统和设计知识库信息集成,实现异构、分布式CAD系统和知识库之间的应用集成和数据交换,提出了基于Web Service技术的CAD和知识库集成;阐述了该技术的工作原理设计原理和关键技术,并且以SolidEdgeV15设计平台为例,开发了Web Service客户端程序来验证该技术,该技术特有的平台无关性可以方便地扩展到其它CAD系统. 相似文献
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基于Web的同步协同CAD/CAM系统的数据交换机制 总被引:2,自引:0,他引:2
基于Web的协同CAD/CAM技术是网络环境下数字化设计与制造的一个重要研究方向。本文结合同步协同CAD/CAM原型系统C SupermanCAD/CAM的开发 ,提出了一种在同步协同CAD/CAM系统中进行操作命令、三维几何数据和多媒体数据交换的解决方案 ,为面向 2 1世纪的新一代制造技术的实现提供了可靠的保证。 相似文献
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基于计算机辅助技术(Computer-Aided Design,CAD)和计算机辅助工程(Computer-Aided Engineering,CAE)集成技术,为实现机械产品的设计流程化、自动化,将三维参数化CAD/CAE系统及输出功能集成到统一界面,形成了开放式的结构设计和分析系统.以钢坯吊具为例,介绍了钢坯吊具集成设计系统的框架组成、设计方案及流程,为大型机械结构的集成设计系统提供开发思路,有利于产品的标准化、系列化及提高产品的科学化管理. 相似文献
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齿轮是一种通用的机械传动零件.采用ASP.NET技术和网络数据库技术,使用C#语言开发了基于Web的齿轮设计系统.该系统利用Auto CAD的二次开发技术,实现了从强度计算到三维实体模型的自动生成的全过程,为基于网络的协同设计提供了一种通用零件的设计手段. 相似文献
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三维CAD技术在机械设计中的应用研究 总被引:1,自引:0,他引:1
机械设计是机械工程的主要构成部分,也是机械生产的首要步骤,更是决定机械性能的关键因素,所以各工程设计师必须予以高度重视。简要介绍了三维CAD技术的特征与作用,并详细分析其在机械设计工作中的应用,说明三维CAD技术对机械设计造成的影响以及存在的问题,以推动我国CAD软件行业不断向前发展。 相似文献
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SolidWorks2001 Plus在装载机设计中的运用 总被引:5,自引:0,他引:5
主要介绍了三维CAD/CAM/CAE集成化机械设计软件SolidWorks2001 P1us的功能、特点,并运用此软件对装载机进行了三维建模、装配、渲染、运动仿真和二维视图转化的设计。 相似文献
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运用三维CAD/CAM/CAE集成化设计软件SolidWorks设计了智能口腔矫治器.介绍了SolidWorks的三维建模、虚拟装配、运动仿真等功能在产品开发设计中的应用. 相似文献
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The demand for the use of 3D CAD data over the Internet environment has been increasing. However, CAD data size has deteriorated
the communication effectiveness of 3D CAD files. Good design methodology of a lightweight CAD file is required for rapid transmission
on the distributed network environment. In this paper, a file translation system is constructed to produce lightweight CAD
files from commercial CAD systems by using InterOp and APIs of the ACIS kernel. Using B-rep models and mesh data extracted
from the CAD native files, the lightweight CAD files with topological information are constructed as binary files. As the
lightweight CAD files retain topological and geometric information, they are applicable to dimensional verification, digital
mock-ups, and visualization of CAD files through a CAD viewer. The effectiveness of the proposed lightweight CAD files is
confirmed through various case studies on the CAD viewer.
This paper was recommended for publication in revised form by Associate Editor Jooho Choi
In-Ho Song received B.S. and M.S. degrees in mechanical engi-neering from Kunsan National University, and Ph.D. degree in mechanical
engineering from Hanyang University, Seoul, Korea in 2007. From 2002 to 2007, he served as a team manager to develop CAD and
PLM systems in CIES in Korea. He is currently a post-doc researcher in the mechanical engineering department in Hanyang University.
As he had developed a lightweight CAD viewing kernel for CAD/CAM systems, he received a New Technology Certificate from Korean
Government (MOCIE) in 2005. He also received several prizes from the Korean Society of CAD/CAM Engineers in 2003 and 2004.
He specializes in geometric modeling, CAD kernels, product design and digital manufacturing systems.
Sung-Chong Chung received the B.S. degree with honors in mechanical engineering from Hanyang University, Seoul, Korea, and the M.S. and Ph.
D. in mechanical engineering from KAIST, Seoul, Korea in 1979, 1981 and 1987, respectively. Since 1983, he has been a professor
in the School of Mechanical Engineering, Hanyang University, Seoul, Korea. In 2000, he received the outstanding paper award
from the North American Manufacturing Research Institution of the Society of Manufacturing Engineers. He received the academic
research and software development awards from the Korean Society of Mechanical Engineers and the Korean Society of CAD/CAM
Engineers in 2003 and 2004, respectively. His research interests include CAD/CAM, control, mechatronics, manufacturing and
precision engineering. 相似文献
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三维CAD/CAE一体化的参数化动态有限元建模 总被引:6,自引:1,他引:6
提出了一种基于CAD参数化技术与CAD/CAE一体化技术的参数化动态有限元建模方法,该方法解决了三维实体有限元建模中几何模型的描述与驱动、参数联动、模型自动更新等一系列问题,为先进的参数化有限元分析与优化设计提供了关键技术基础;阐述了三维参数化动态有限元建模方法中的若干关键技术,包括具有典型意义的基于AutoCAD/MDT二次开发环境ObjectARX的CAD/CAE集成方法、复杂三维组合曲面网格全自动生成算法、复杂三维实体的四面体网格全自动生成算法、面向对象的有限元模型描述方法,以及有限元模型的参数驱动方法等;建立了一个三维参数化形状优化设计应用原型系统。 相似文献
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现代CAD技术面向设计自动化,但现存的基于约束的机构设计设计自动化(MDA)系统在某些方面存在缺陷。提出基于超变量设计技术(VGX)的MDA系统,VGX技术以混合求解策略为核心,支持超越历史的设计,并采用了交互性很强的拖放造型技术,完全的数学描述使基于VGX技术的MDA系统不需要单独建模就能进行3D公差,机构等数学分析。 相似文献
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Islam Gharib Shengfeng Qin 《The International Journal of Advanced Manufacturing Technology》2013,68(9-12):2669-2681
Sketch-based modeling is a very important step towards a complete design process digitalization. For a complete digitalization, integration of sketch-based design modeling and commercial CAD systems is being a necessity. This is because of the need of detailed modification and refinement for the 3D models created by sketching. The integration can speed up the design process and affect competition between companies. In this paper, we present a new method to achieve the integration between sketch-based interfaces and commercial CAD systems by using gesture-based sketch modeling techniques for producing 3D conceptual design models and then translating the 3D models into CAD systems with feature recognition through IGES exchange files. Gesture-based modeling method was used because it works in a similar way to feature-based design approach and it is easy to extract features from its 3D models. IGES file format was used for exchanging 3D geometric model information because it is widely available within commercial CAD systems for data exchange and it also can express features and hierarchy information. 3D models were created with a gesture-based sketch interface for modeling and then information was extracted from it. After that, information was translated into IGES entities which were organized in a specific order in an IGES file. This information can be inputted into commercial CAD systems and recognized as a feature-based model with feature recognition embedded within CAD systems. To evaluate the proposed method, we conducted four case studies. In these case studies, we created 3D models and then transferred them into Autodesk Inventor as a commercial CAD system. After the CAD system recognized the 3D models successfully, we applied some modifications on the 3D models such as changing dimensions, positions and drafting to demonstrate the effective integration. 相似文献
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随着现代计算机技术和测试技术的发展,利用逆向工程技术对产品进行建模、仿真、优化及新产品开发成为现代设计的一大热点,并已成为CAD/CAM领域特别是模具设计和制造的重要技术之一。以油壶切边模为例,采用逆向工程技术通过实物原型获取了油壶的三维轮廓数据,然后利用Pro/E等软件将得到的轮廓数据三维重构,得到了实物原型的三维数字模型,实现了油壶切边模具的设计与制造。采用逆向工程技术可以快速实现模具的设计与制造,大大缩短产品设计周期,提高产品竞争力。 相似文献
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装配顺序规划是研究和开发计算机辅助装配工艺设计系统,实现产品装配设计过程和装配工艺设计过程有效集成的关键技术。研究了CAD模型中装配设计信息提取、子装配体识别法和拆卸法综合应用的装配顺序规划、基于装配结构树的装配设计与工艺集成数据接口的定义等相关技术。在这些研究的基础上,借助国产三维CAD平台CAXA的二次开发平台和XML技术,对以上技术进行了实现。最后,以电机产品为研究对象,给出了相关实例。 相似文献