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类型 基础研究 预答辩日期 2018-01-23
开始(开题)日期 2014-07-01 论文结束日期 2017-11-15
地点 九龙湖校区机械楼第一会议室327 论文选题来源 973、863项目     论文字数 5.9 (万字)
题目 伺服刀架快速设计系统关键技术研究
主题词 快速设计,伺服刀架,实例推理,设计重用,参数化技术
摘要 随着全球市场日趋激烈的竞争及产品需求市场的细分,支持产品快速设计系统平台的开发和应用是决定企业竞争力的关键因素。针对国内伺服刀架产品设计成本高、供货周期长的问题,本论文在“高档数控机床与基础制造装备”国家科技重大专项资助下,以SLT系列数控伺服刀架作为研究对象,开发了伺服刀架快速设计系统平台。围绕伺服刀架快速设计平台的关键技术展开深入研究,主要研究内容如下: 1、基于伺服刀架快速设计系统,分析了快速设计平台的功能需求,搭建了由网络用户层、Web业务层、数据信息层构成的基于J2EE构架的三层WEB体系结构,划分了伺服刀架快速设计平台的功能模块,并建立了伺服刀架快速设计平台的总体结构框架。 2、将设计方法学中的新概念Affordance应用于产品的详细设计中,提出了零件Affordance概念为产品详细设计知识建模服务。将产品伺服刀架的信息模型在Affordance概念的基础上扩展,建立了形状-行为-Affordance的信息模型,产品研发者可对伺服刀架零件设计阶段的各隐性因素建模。同时,本文提出了基于零件Affordance驱动的方法来有效重用源实例方案生成过程中的详细设计知识信息。 3、首先研究了基于实例推理中的实例检索技术,提出了属性类型为精确集和模糊集的混合相似度计算模型。针对模糊集,提出了具有准确度和简单性优点的面积比法,并开发了针对模糊属性集的相似度计算公式FSM。其次研究了伺服刀架属性权重系数的赋值,为克服单一权重的弊端,在同时考虑主观权重和客观权重的基础上,提出了组合权重的概念。研究了基于相似度离差信息的客观权重,并利用乘法合成法计算出组合权重。结合混合相似度计算模型和组合权重法建立了全局相似度计算模型,可更加精确地从实例库中检索到相似实例。 4、对系列化数控伺服刀架产品,提出了一种结合模块化和参数化设计技术的快速设计方法。在对产品的结构特征分析的基础上对系列伺服刀架产品进行模块划分,并对系列伺服刀架产品零件进行参数化建模,在软件Solidworks中利用二次开发工具实现零件参数化设计。在伺服刀架整机装配体参数化设计中重点研究了产品总装配体的层 次模型和二叉 树抽 象模型、参数化零件模型间的数 据关联以及零件参数的装 配适应性重 构,实现了装配体的参数化设计。 5、在伺服刀架快速设计系统平台中,通过应用JSP技术实现了系统网页的编写,并实现了快速设计平台中的用户登录模块、零部件查询模块、CAE分析模块、参数化设计模块以及可靠性分析模块的功能。该快速设计系统平台在伺服刀架产品的设计、装配、后期使用维修等整个产品生命周期过程中都起到了重要作用,有效地提高了伺服刀架产品设计的效率。
英文题目 RESEARCH ON KEY TECHNOLOGY OF RAPID DESIGN SYSTEM FOR SERVO TOOL HOLDER
英文主题词 Rapid Design, Servo Tool Holder, Case-Based Reasoning, Design Reuse, Parametric Technology
英文摘要 With the increasingly fierce competition in the global market and the refining of the product demand market, the development and application of the rapid product design system platform is the key factor to determine the competitiveness of an enterprise. With the support of China Major Scientific and Technological Programs "high-grade CNC machine tools and basic manufacturing equipment", the SLT series of the CNC servo tool holder is taken here as the research objective. Given the facts of high design cost and long supply cycle, a servo tool holder rapid design system platform was developed. Accordingly, this dissertation aims at the key technology of the fast design platform of the servo tool holder, and has carried on the following issues: 1、The J2EE technology is chosen as the design platform for the rapid design of the servo turret, and the functional requirements of this rapid design platform are analyzed. The J2EE architecture based three-tier WEB architecture, consisting of the network user layer, Web service layer and data information layer, is built. On the basis of dividing the functional module of the servo tool holder rapid design platform, the overall structure frame of the servo tool holder rapid design platform is established. 2、The affordance, a new concept from design methodology, is introduced to the detailed product design and accordingly the part affordance concept is used to design knowledge modeling services for the detailed product design. The product information model is then extended, on the basis of the affordance concept, to the affordance integrating FBA product information model, which enables the designers to model the hidden factors of the whole life cycle of the parts. An affordance driver based method for effectively reusing the detailed knowledge of the source program is proposed here. 3、Firstly, the case retrieval technology based on case-based reasoning is studied, and a hybrid similarity calculation model with attribute types for exact sets and fuzzy sets is proposed. For the fuzzy set, an aspect ratio method is proposed, which has the advantages of accuracy and simplicity, and a similarity calculation formula FSM for fuzzy attribute set is developed. Secondly, the assignment of the attribute weight coefficient of the servo tool holder is studied. In order to overcome the drawbacks of single weight, the concept of combined weights is put forward on the basis of both subjective and objective weights. The objective weight based on the similarity degree difference information is studied, and the combined weights are calculated by multiplicative synthesis. The global similarity calculation model is established by combining the hybrid similarity calculation model and the combined weighting method, and a similar example can be retrieved more accurately from the example library. 4、The application of modular and parameterization technology in the rapid design of new series of CNC servo turret products is studied here. On the basis of the analysis of the structural characteristics of the product, the series of servo tool holder products are divided into modules. The parts of the series of servo tool holders are parametrically modeled, and the parametric design of parts is realized by using the secondary development tool in the Solidworks. In the parametric design of the servo tool holder assembly, the hierarchical model and the binary tree abstract model of the total assembly of the product are studied. The data association between the parametric part model and the assembly adaptability of the component parameters are realized, along with the realization of the parametric design of the assembly. 5、In the design platform for the rapid design of the servo turret, the system web pages are achieved by the application of the JSP technology. All the functions of user login module, component query module, parameterized design module, CAE analysis module and reliability analysis module in the rapid design system platform are realized. This rapid design system platform plays an important role in the design, assembling and post-service maintenance of the servo tool holder products, and has effectively improved the efficiency of the servo tool product design.
学术讨论
主办单位时间地点报告人报告主题
结构动态优化实验室 2012.5.11 机械楼327 王海巧 基于数控刀架的快速开发平台系统架构
结构动态优化实验室 2013.9.6 机械楼327 王海巧 基于实例推理的数控刀架快速设计方法研究
结构动态优化实验室 2014.12.17 机械楼327 王海巧 产品快速开发平台关键技术的研究现状
结构动态优化实验室 2016.5.24 机械楼327 王海巧 Hybrid similarity measure for retrieval in CBR systems and its applications for CNC turret design
结构动态优化实验室 2015-5-8 机械楼327 刘鑫 数控刀架静刚度测试原理
结构动态优化实验室 2015-10-13 机械楼327 刘鑫 数控刀架静刚度分析
机械工程学院 2016-5-18 机械楼南高厅 Gabor Stepan Delayed oscillators and wheel shimmy
东南大学 2017-6-5 机械楼327 李烈 减振刀具橡胶材料的摩擦阻尼和粘性阻尼
     
学术会议
会议名称时间地点本人报告本人报告题目
2013国际功能制造与机械动力学会议 2013.5 河北唐山 Case-based Reasoning Rapid Design Approach
东南大学机械工程学院学术报告 2015.6 机械楼南高厅 伺服刀架快速设计平台的框架结构设计研究
东南大学学术报告 2017.6 机械楼南高厅 伺服刀架快速设计系统开发与实现
     
代表作
论文名称
基于实例推理的数控刀架快速设计方法
Research of the Parametric Re-development System Based on Pro/E
Case-based Reasoning Rapid Design Approach for CNC Turret
 
答辩委员会组成信息
姓名职称导师类别工作单位是否主席备注
陈南 正高 教授 博导 东南大学
刘英 正高 教授 博导 南京林业大学
郭策 正高 教授 博导 南京航空航天大学
张建润 正高 教授 博导 东南大学
李普 正高 教授 博导 东南大学
      
答辩秘书信息
姓名职称工作单位备注
陈斌 其他 讲师 东南大学