基于特征驱动的板类零件工艺变型设计研究

发布时间：2018-05-07 13:22

本文选题：工艺模板 + 参数化技术　；参考：《中北大学》2014年硕士论文

【摘要】：工艺设计作为连接产品设计与制造的桥梁，对产品的质量、制造成本以及企业快速响应市场的能力都具有极为重要的影响。工艺设计通常会利用已有的设计经验和资源，并且在已有的基础上进行改进，提高工艺的重用程度。本文把板类零件作为研究的目标，将参数化的思想运用到工艺变型设计过程中，建立了能够达到工艺变型的零件模型，研究了建立工艺模型的方法，利用研究的技术和方法完成对板类零件工艺的变型设计，最后对板类零件工艺变型设计系统进行了研究。首先，论述了目前国内和国外研究三维CAPP技术以及基于特征的零件工艺变型设计技术的状况，详细阐述了通过特征变化引起零件工艺变型的原理。其次，研究了基于特征驱动的零件工艺变型设计技术。从加工特征的层面上研究了工艺的变型设计，通过对零件的相似性和工艺可重用技术的分析，利用结构单元层次的相似性，建立了结构单元编码规则和结构单元相似判定的进级匹配算法，为板类零件的工艺的变型设计提供了手段。再次，，研究了面向制造过程的减材料法、特征组合和参数化技术相结合的零件建模方法和工艺模型的建立过程。依据零件特征的变化程度，确定零件工艺的变型类型，达到工艺路线变型的目的；根据参数化工艺模板，对加工过程中的参数和内容进行更换，实现卡片的变型。最后，以某型号的板类零件为研究对象，开发了一套原型系统，对理论知识进行了验证。
[Abstract]:As a bridge between product design and manufacturing, process planning has an extremely important impact on the quality of products, manufacturing costs and the ability of enterprises to respond quickly to the market. Process planning usually makes use of the existing design experience and resources, and improves the process reuse based on the existing process. In this paper, the object of the research is plate parts, the idea of parameterization is applied in the process of process modification design, the part model that can achieve process modification is established, and the method of establishing process model is studied. The technology and method are used to complete the process modification design of plate parts. Finally, the process variant design system of plate parts is studied. Firstly, the research status of 3D CAPP technology and feature-based process variant design technology in China and abroad is discussed, and the principle of part process modification caused by feature change is described in detail. Secondly, the feature-driven part process variant design technology is studied. The variant design of process is studied from the aspect of machining features. By analyzing the similarity of parts and the reusable technology of process, the similarity of structure unit level is used. The coding rules of structural units and the stepwise matching algorithm of structural unit similarity determination are established, which provides a means for the process variant design of plate parts. Thirdly, the part modeling method and the process modeling process based on the method of subtractive material, feature combination and parameterization are studied. According to the change degree of the feature of the part, the variant type of the part process is determined to achieve the purpose of the process route modification. According to the parameterized process template, the parameters and contents in the machining process are replaced to realize the change of the card. Finally, a prototype system is developed to verify the theoretical knowledge.
【学位授予单位】：中北大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TH162

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