基于加工特征的零件设计方法研究

发布时间：2018-06-23 07:12

本文选题：加工特征 + 特征建模　；参考：《哈尔滨工程大学》2011年硕士论文

【摘要】：特征技术在实现产品设计制造一体化的过程中起到关键的作用。一方面,特征模型能够包含多种信息,可将与产品设计制造相关的各个环节有机的联系在一起；另一方面,合理有效利用特征模型对产品进行描述,可缩短产品开发周期,提高企业的设计生产效率。研究基于加工特征的零件设计方法,目的在于通过建立具有信息集成性与共享性的加工特征模型,将设计与制造并行结合,为产品的结构设计与工艺生成两者并行协同工作提供有效支持。在此背景下,本文主要从以下几个方面做了具体研究。给出了加工特征的定义,并对其进行了分类,在此基础上对加工特征所包含的信息进行了分析与归纳,建立了加工特征模型,给出了加工特征模型重要信息的处理方法。采用配置文件技术存储加工特征信息,为建立应用系统提供信息支持。建立了制造资源模型,并给出了制造资源对加工特征的约束检查方法,由此保证零件设计的可制造性。从零件的制造过程出发,研究了加工特征之间的组合关系,对特征组合关系进行了分类,并给出了不同特征组合类型的判定方法,以及组合信息在特征文件中的描述方法,建立了针对不同组合关系的特征加工顺序确定规则,为零件加工工艺生成提供了信息基础和决策依据。分析了零件加工特征域中切削成形信息和几何特征域中几何形状信息的不同表现形式,以及信息之间的内在联系,以此为基础建立了加工特征向几何特征的信息映射机制,并构建了特征映射规则和知识库,采用基于知识和规则的方法实现了加工特征向几何特征的映射。通过UG NX 4.0软件的行二次开发,建立系统各功能模块,在此基础上构建了基于加工特征的零件设计软件系统。以某型号减速器为设计对象应用系统进行实例运行,运行结果表明了此系统能够有效实现产品设计与制造的并行集成,提高了产品的设计研发效率,同时表明了该方法的有效性和可行性。
[Abstract]:Feature technology plays a key role in the process of product design and manufacturing integration. On the one hand, the feature model can contain many kinds of information, which can link all the links related to product design and manufacture organically. On the other hand, the product development cycle can be shortened by using the feature model to describe the product reasonably and effectively. Improve the design and production efficiency of enterprises. Part design method based on machining features is studied in this paper. The purpose of this paper is to combine design and manufacturing by building a machining feature model with information integration and sharing. It provides effective support for the parallel and cooperative work of product structure design and process generation. In this context, this paper mainly from the following aspects of specific research. The definition and classification of machining features are given. On the basis of this, the information contained in machining features is analyzed and summarized, a machining feature model is established, and the processing methods of important information of machining feature models are given. The profile technology is used to store the processing feature information, which provides information support for the establishment of application system. The manufacturing resource model is established, and the constraint checking method of manufacturing resource to machining feature is given to ensure the manufacturability of part design. Based on the manufacturing process of parts, this paper studies the combination relation among machining features, classifies the feature combination relation, and gives the methods of judging different feature combination types and describing the combination information in the feature file. The rules for determining the processing sequence of different combination relationships are established, which provide the information basis and decision basis for the production of parts processing process. Based on the analysis of different forms and internal relations of cutting forming information in machining feature domain and geometric shape information in geometric feature domain, the information mapping mechanism from machining feature to geometric feature is established. The rules and knowledge base of feature mapping are constructed, and the mapping of machining features to geometric features is realized by using the method of knowledge and rule. Through the secondary development of UG NX 4.0 software, the functional modules of the system are established, and the part design software system based on machining features is constructed. Taking a certain type of reducer as the design object application system, the running results show that the system can effectively realize the parallel integration of product design and manufacture, and improve the efficiency of product design and research and development. At the same time, the effectiveness and feasibility of the method are demonstrated.
【学位授予单位】：哈尔滨工程大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH161.1

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