【作者】 辛志杰；

【导师】 徐燕申； 张大卫；

【作者基本信息】 天津大学 ， 机械制造及其自动化， 2008， 博士

【摘要】 本文结合国家863项目和企业研究项目,以数控弧齿铣齿机系列产品设计为例,系统地研究了机床结构可适应动态设计理论、方法、工具及实现技术。在对可适应设计研究的基础上,提出了可适应动态设计的概念,建立了可适应动态设计的数学模型和定量化的分析工具。提出了结构性能评价原则和结构方案优选准则。分析了可适应动态设计的技术流程。在市场需求分析的基础上,建立了客户需求模型,包括顾客需求矩阵的建立、顾客之间距离的量化表示,以及顾客群体与细分产品之间的对应关系。建立了产品平台规划与设计模型,该模型包括产品系列规划矩阵、功能模块矩阵及结构模块矩阵。在产品系列规划矩阵的基础上,依据一定的规则和方法规划出不同的产品平台。应用基于知识工程的原理和方法,指出了产品功能分析与功能求解方法,建立了数控弧齿铣齿机功能层次分解树以及功能与原理解的映射矩阵。建立了数控弧齿铣齿机运动功能解析式、产品平台和广义结构模型。采用有限元计算和试验分析相结合的方法,对数控弧齿铣齿机结构性能进行了分析,提出了一种有限元模型修正方法,得到了数控弧齿铣齿机系列产品的结构性能特征。应用定量化的分析工具,对机床结构可适应动态设计过程进行了分析。通过在方案设计阶段给出各方案的可适应性度量数值以及对修改设计的难易程度做出定量评价,可以有效地指导机床结构设计过程。提出了产品可适应性综合评价指标,建立了产品可适应性综合评价模型。应用多级模糊综合评价方法在对产品功能适应性等多种评价指标初级评价的基础上,进行了二级综合评价,得到了某数控弧齿铣齿机产品可适应性综合评价等级,从而为进一步改进产品设计提供指导和修改依据。应用基于组件技术的软件原型系统开发方法,开发了面向产品族的机床结构快速可适应动态设计软件原型系统。建立了YH60系列数控弧齿铣齿机主要结构模块的模型库、性能参数库、域间重用参数库等产品技术平台数据库。上述研究成果丰富了可适应设计理论,并填补了可适应设计理论和实践之间的鸿沟。所开发的软件原型系统实用性强,可以有效地提高企业新产品快速创新设计的能力。研究成果已在企业成功应用,并取得了显著的社会和经济效益。更多还原

【Abstract】 Under the support of the National 863 Program and enterprise research program, taking CNC spiral bevel gear cutting machine tools series products as an example theory and methodology of adaptable dynamic design of machine tools structures are researched by the numbers, design tools and realization technology are also presented.On the basis of the study on adaptable design , the conception of adaptable dynamic design is defined. Mathematics model of adaptable dynamic design is founded. Quantification analytical tools of adaptable dynamic design are established. The evaluation principles for structure capability and chosen rules for structure project are put forward. The process of technology of adaptable dynamic design is analyzed.On the basis of market requirement analysis for CNC spiral bevel gear cutting machine, the customer requirement models are founded including the foundation of customer requirement matrix, the quantity expression of connection among customers and the corresponding relation between customer colony and subdivision product. The model of layout and design for product platform is established which including the layout matrix for product series, the function module matrix and the structure module matrix. On the basis of series layout matrix the product platform for each kind of structure is designed according as definite rules and methods.Methods of function analysis and function solution are indicated by using principle and method of KBE(Knowledge Based Engineering). The decomposition tree of function arrangement and mapped matrix between function and principle are established. The formulation of movement function and product platform and generalized structure model are founded for CNC spiral bevel gear cutting machine. A sort of modified method for FEM model is proposed and structure capability characteristic of machine tools series product is obtained by structure capability analysis using FEM calculation and test analysis.Using quantification analysis tools, the course of adaptable dynamic design for machine tools is analyzed. Adaptability is calculated and quantification estimation level of difficulty is indicated for each project in the design phase , which provided an effective guide for design process of machine tools structures. The comprehensive evaluation indices for product adaptability are put forward, in this basis the comprehensive evaluation model for product adaptability is given. According to primary evaluation results for product function adaptability etc evaluation indices secondary evaluation are put up using multilevel fuzzy integration evaluation methods, and the grade of adaptability integration evaluation of one CNC spiral bevel gear cutting machine is obtained, thereby guidance and modified foundation are afforded for more improvement of product design.Using exploiture methods of software prototype system based component technology, the software prototype system for adaptable dynamic design of machine tools structures to product family has been developed. The databases of product technology platform including structure module and capability parameter and reusable parameter in different design region and so on for YH60 series machine tools are established.The above research results make it richer of adaptable design theories, and the gap between adaptable design theory and practice has been filled. The software prototype system which has a better practicality can effectively improve the rapid innovation design capabilities for new product. This research has been successfully used in enterprises, and has yielded remarkable social and economic benefits.更多还原