【作者】 刘丽；

【导师】 钟佩思； 张健；

【作者基本信息】 山东科技大学 ， 机械工程， 2005， 硕士

【摘要】 夹具作为一种重要的工艺装备在现代制造业柔性化发展趋势下，地位越来越重要。本文结合计算机辅助夹具设计进行分析，特别是对三维实体造型软件Solidworks的特点及二次开发，建立了基于知识建模的重构CAD模型的方法。这样从数据库输出CAPP和CAD所需信息，实现了CAD／CAPP／CAM集成，这些信息不仅包括零件的总体信息(形状、尺寸等)，更重要的是加工面的加工信息(粗糙度、加工精度、形位公差等)和装配信息。运用了基于知识的计算机辅助夹具设计系统的分析工作。 本文对计算机辅助夹具设计的知识库的开发、知识表达、知识规则、知识运用做了深入分析，知识库的开发还引入知识库管理系统(知识子库的建立)。通过对夹具设计知识的表达方法、夹具设计的推理机制的研究，明确了多种知识表达方法相结合的夹具方案设计思路。并有利于基于知识的夹具方案设计的自动选取。 论文通过对夹具内容和特点的分析，提出了机床夹具CAD系统(简称MF-CAD)的方案设计，提出基于知识的零件工艺模型表示方法。应用知识建立面向知识工艺的夹具设计模型，实现了一种基于知识工艺设计与夹具设计为一体的集成模式。更多还原

【Abstract】 As an important Tooling assembly, fixture shows its more and more important status with the development of modern manufacturing to the flexible direction. I analysis the process of CAFD, and especially uses 3D parametric solid modeling software- Solidworks to re-develop to set up its CAD of the knowledge ’s modeling engineering diagram. And outputting the information what CAD and CAPP need from the database, it realizes the CAD/ CAPP/ CAM’s gathering. Some not only including parts total information( shape, size...etc.), but others information( rough degree, process the accuracy, form the business trip etc.) and assembling information.Based on the research on the representation of fixture design knowledge and the reasoning method of knowledge-based fixture design, we confirmed a fixture design method with multi-fixture design knowledge and hybrid reasoning methods. And achieved automated choose of the configuration design of fixture based on knowledge. This towards developing calculator lends to fixture design that knowledge bases as development, knowledge expresses, as well as knowledge the rule. Knowledge makes us offend to return into the knowledge base to manage the system into the research, so called that sub-knowledge establishing of base.Passing through expression fixture design knowledge research, the fixture project reasoning logically, gets clearer and more definite. The technique of Computer Aided Fixture Design is to take calculator, Various of knowledge’s express methods combine together, and reasoning logically combine together to design the way of thinking.更多还原