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Network Utilization of Database for Product (Shape) Information Described Symbolically

符号化描述的产品（形状）信息数据库的网络利用

基本信息

批准号：
15560123
负责人：
HIGASHI Masatake
金额：
$ 2.24万
依托单位：
Toyota Technological Institute
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2005
项目状态：
已结题

项目摘要

Nowadays, CAD systems with parametric modeling functions are being realized to support design activities in the product lifecycle such as prototyping, evaluation, manufacturing, maintenance and recycle, and bring about a striking effect connected with analysis and manufacturing systems. The database generated by the systems store solid models but can not show the content of the model as the designer's intent unless users check the models through CAD systems. Therefore, our objective of the research is to establish methods in the network environments which enable to display characteristics of the product along with their shapes, to search parts having similar shapes or functions, to display designer's intent or design background information and to design products collaboratively by multiple designers.Main research results are shown as follows.1.Compound feature modelingWe propose a method for processing a compound feature which consists of multiple primitive features. The method represe … More nts a compound feature by combining primitive features similarly as a product model, converts the model to a XML file and enables designers to use it in the network. We have also proposed algorithms which search compound features with similar primitive features and which protect the duplicate registration of the same features.2.Collaborate design in the networkWe have developed a client/server system by JAVA which enables designers to design the same product sharing its database in the network environments. If multiple designers change a product shape at the same time, some contradictions might occur in the database. Hence we conduct exclusive use control for a part of the product shape by forbidding change of a shape with a registered list of faces in the face-based representation when another designer is changing some part of the shape.3.Assembly design, conceptual design and parametric design for shapes with esthetic free-form surfacesWe have also studied on processing methods for assembly design, conceptual design and parametric design for shapes with esthetic free-form surfaces. Less

如今，具有参数化建模功能的CAD系统正在实现支持产品生命周期中的原型设计、评估、制造、维护和回收等设计活动，并与分析和制造系统相结合，产生显着的效果。系统生成的数据库存储实体模型，但不能按照设计者的意图显示模型的内容，除非用户通过CAD系统检查模型。因此，我们的研究目标是建立在网络环境下显示产品特征及其形状、搜索具有相似形状或功能的零件、显示设计者意图或设计背景信息以及多个设计者协同设计产品的方法。主要研究成果如下：1.复合特征建模提出了一种处理由多个原始特征组成的复合特征的方法。该方法通过组合原始特征来表示复合特征，类似于产品模型，将模型转换为 XML 文件，并使设计人员能够在网络中使用它。我们还提出了搜索具有相似原始特征的复合特征并保护相同特征的重复注册的算法。2.网络中的协作设计我们用JAVA开发了客户端/服务器系统，使设计人员能够在网络环境中共享其数据库来设计相同的产品。如果多个设计者同时改变产品形状，数据库中可能会出现一些矛盾。因此，当其他设计师改变形状的某些部分时，我们通过禁止在基于面的表示中注册的面列表来改变形状，从而对产品形状的一部分进行独占使用控制。3.具有美观的自由曲面形状的装配设计、概念设计和参数化设计我们还研究了具有美观的自由曲面形状的装配设计、概念设计和参数化设计的处理方法。较少的

项目成果

期刊论文数量（10）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Collaborative Feature Modeling by Managing Exclusive Use of Faces

通过管理人脸的独占使用进行协作特征建模

DOI：
发表时间：
2006
期刊：
Proc. The 3rd International Conference on Computing, Communications and Control Technologies
影响因子：
0
作者：
Tomio Koyama;Weiming Zhang;Keiji Katano;Shiro Ujihara;中野寿;Masatake Higashi
通讯作者：
Masatake Higashi

拘束指定に基づく複合フィーチャモデリング

基于约束规范的复杂特征建模