【作者】 吴增上；

【导师】 苏广才； 夏薇；

【作者基本信息】 广西大学 ， 材料加工工程， 2006， 硕士

【摘要】 随着汽车产业的发展，市场对粉末冶金产品的需求越来越大，要求越来越高，对粉末冶金模具要求也越来越高，传统的模具设计方法不能适应市场的要求。市场对开发专业化、智能化的粉末冶金模具CAD系统呼声越来越高。 本文围绕广西区科技攻关项目“汽车关键零配CAD／CAM模具设计和制造技术的开发”，应用基于装配模型的设计理论方法，在UG软件平台下，利用VC++6.0、SQL Server2000、UG／Open等开发工具对UG进行二次开发，开发了一套智能化CAD系统。论文主要内容如下： 1．介绍了模具CAD的一般开发方法，比较分析了基于参数化设计、基于特征建模和基于装配模型的模具CAD开发方法的优缺点。 2．研究了粉末成形原理及其成形质量的主要影响因素，在此基础上分析粉末冶金成形模具一般结构及其设计原理、方法。 3．研究了装配模型的概念、装配模型的信息结构和配模型的描述方法以及装配建模的一般方法并将其应用到系统开发中。根据辐射式结构装配模型原理构建粉末冶金模具装配模型，并分析了装配模型在主要成形零件设计、模架选择／设计以及总装配设计中的应用方法。 4．应用IDEFO方法分析了系统的功能模型，并介绍了对象识别、参数化设计、数据管理方法和数据库接口技术、基于装配模型的变形设计、基于配合关系的自动装配等系统开发的关键技术。 5．研究了UG二次开发的编程方法，对UG二次开发的三种程序框架向导进行了探讨，介绍了系统开发的过程及其关键步骤的实现方法。 6．以实例介绍了系统的运行情况。更多还原

【Abstract】 The demand of powder metallurgy product is growing fast and the request of the accuracy of compacting die as well as the product quality is more and more high along with the development of the automobile industry. The traditional design method appears incompetent for the newly demand, and consequently, the desire for professional and intelligent powder metallurgy compacting die CAD system is growing rapidly.This paper mainly concern the project of "Development of mould& die CAD/CAM technology for the key accessories of the automobile", which come from Guangxi Scientific and Technical Office. Applying the theory of design based on assembly model and Using develop tool of VC++6.0、 SQL Server2000、 UG/Open toolkit, a intelligent CAD system for metallurgy compacting die was developed by further development based on UG software. Main contents of the paper showed as follow:1. The development technique of mould & die CAD system is concluded. the advantages and disadvantages of development based on parametric design、 development based on feature modeling and development based on assembly model is analyzed.2. Structure of compacting die and it design principium & method was analyzed on the foundation of studying powder metallurgy compacting principium along with primary effect factors of compacting quality.3. Assembly modelling method、 concept of assembly model、 imformation structure of assembly model、 expression of assembly model and assembly modeling method was lucubrated and was applied to analyze the system. Theory of radiate assembly model was detailed and was applied to build up Powder metallurgy compacting assembly model. And applicatiom skills of using assembly model for design primary parts、 frame of die and assembling is researched.4. Fuction model of the system was investigated by IDEFO technique. Key techniques include Objects identify technique、 Parametric design technique、 Data manage technique and Data connect technique、Variant design based on assembly model technique and auto-assemble based on mating conditions technique were detailed.5. Skills of further development based on UG software were discussed. Three program skeletons building skills were showed, process of developing system was described and the key parts of the program was introduced.6. Finally, the system was introduced by case.更多还原