基于网络的机电产品虚拟模型库与实时交互系统

发布时间：2018-08-22 16:58

【摘要】：制造业的日益繁荣促使三维软件在机械设计中的使用越来越广泛,很多企业开发了自己的零件库。随着计算机网络技术的逐渐成熟,基于网络的CAD/CAM技术将成为未来软件发展的方向。互联网的发展使不同地域、不同行业之间的通讯与协作成为可能,网络虚拟展示技术的应用,使用户从单纯的二维浏览中解脱出来,通过在线对模型文件的缩放、移动和旋转等操作,用户可以直观的观察产品结构特征,获取产品信息。本文在分析当前零件模型库的现状与不足的基础上,并结合互联网的发展现状,提出了一套基于网络的机电类产品通用部件虚拟模型库的设计思想,并进行了初步尝试。利用三维造型软件建立部件模型,为了增强真实感,在具有强大渲染功能的3Dmax软件中进行贴图和渲染,再通过Cult 3D Exportor插件导入Cult 3D Designer编辑并进行交互的设置,搭建Cult3D的Java代码开发环境,构建部件产品的在线交互展示模型。系统以Windows XP作为平台,采用基于网络的B/S(Browser/Server)模式,根据服务器端的脚本编程技术、ASP访问数据库的原理设定数据源,建立网页与数据库的链接。该模型库系统分为三个层次结构:网络数据库层、逻辑层和应用层,其中应用层采用模块化设计,以适应数据库连接的模块化。采用Visual studio软件,借助C#、JavaScript脚本语言对系统的站点、Web页和Web应用程序进行设计、编码和开发。整个系统通过网络环境集成产品搜索、交互浏览、模型下载、在线订货和管理维护等模块。通过编写JavaScript脚本语言,实现模型的拖动下载,用户可直接将模型从系统中拖动到三维软件的装配环境中,设置装配基准和约束条件。系统实现了在有限的带宽下产品的在线交互浏览、模型的拖动下载和产品在线订购等功能,方便了设计师的使用,缩短了产品开发周期,也为部件供应商提供了展示和销售产品的服务,降低了零部件的销售成本。系统向个人用户(主要针对机械设计师)免费开放,部件商通过购买使用权对模型库进行资金支持,维持模型库的运营。系统的投入使用,为用户提供了一种新型网上CAD信息共享平台,具有广泛的应用前景。
[Abstract]:With the prosperity of manufacturing industry, 3D software is widely used in mechanical design, and many enterprises have developed their own parts library. With the maturity of computer network technology, CAD/CAM technology based on network will become the direction of software development in the future. The development of the Internet makes it possible to communicate and cooperate between different regions and different industries. The application of network virtual display technology frees users from simple two-dimensional browsing and scales the model files online. Moving and rotating operations, users can intuitively observe the characteristics of the product structure, obtain product information. Based on the analysis of the current situation and deficiency of the part model base and the development of the Internet, this paper puts forward a set of design ideas of the virtual model base of the general components of electromechanical products based on the network, and makes a preliminary attempt. Using 3D modeling software to build component model, in order to enhance the reality, map and render in 3Dmax software with powerful rendering function, then import Cult 3D Designer edit and set up interactive through Cult 3D Exportor plug-in. The Java code development environment of Cult3D is built, and the online interactive display model of component products is constructed. The system takes Windows XP as the platform, adopts the B / S (Browser/Server) mode based on the network, sets up the data source according to the principle of the script programming technology in the server side to access the database, and establishes the link between the web page and the database. The model base system is divided into three hierarchies: the network database layer, the logic layer and the application layer. The application layer is designed by modularization to adapt to the modularization of database connection. The Visual studio software is used to design, encode and develop the web page and Web application program of the system. The whole system integrates product search, interactive browsing, model download, online ordering and management and maintenance through the network environment. By writing the JavaScript script language, the model can be dragged and downloaded. The user can directly drag the model from the system to the assembly environment of 3D software, and set up the assembly benchmark and constraint conditions. The system realizes the functions of online interactive browsing of products under limited bandwidth, dragging and downloading of models and online ordering of products, which facilitates the use of designers and shortens the product development cycle. It also provides parts suppliers with the services to display and sell products, reducing the cost of parts sales. The system is open to individual users (mainly for mechanical designers) free of charge. Component vendors support the model base by purchasing the right of use and maintain the operation of the model base. The application of the system provides users with a new online CAD information sharing platform, which has a wide application prospect.
【学位授予单位】：河北农业大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH164

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