基于KBE的组合机床夹具快速设计系统的研究与开发

为提高组合机床夹具的设计质量和效率,将KBE技术应用到组合机床夹具的设计流程中。在对组合机床夹具的结构特点和功能进行分析的基础上,提出了基于KBE的组合机床夹具快速设计系统的设计方案。利用NX/Open二次开发技术以及基于VS.NET集成开发环境开发出了组合机床夹具的快速设计系统原型,该系统通过开放的形式支持设计人员修改设计方案,实现设计人员与计算机之间的交互式协同设计。最后以柴油机缸体加工用夹具为例,验证了基于KBE的组合机床夹具快速设计系统的能够有效地重用设计知识,保证了夹具产品设计质量,提高了夹具产品设计的效率。     

基于知识的组合机床总体设计CAD系统的研究与开发

根据组合机床产品设计的特点,采用模块化设计思想,建立了组合机床总体设计CAD系统体系架构,系统的设计过程以自顶向下为主、自底向上为辅;研究了知识工程关键技术在系统中的应用,将组合机床总体设计的领域与经验知识和知识工程相结合,加强对设计知识的继承和重用,实现组合机床总体的快速设计,为组合机床设计提供了可靠的技术保障;最后介绍了系统开发平台和开发工具,并通过实例验证了系统可以显著提高组合机床产品设计效率和质量。     

基于UG的组合机床夹具智能设计系统的研究与应用

介绍了组合机床夹具设计的研究状况,分析了企业开发应用组合机床夹具智能设计系统的必要性及该系统实现存在的难点。在分析构建该智能设计系统的系统框架的基础之上,利用三维设计软件UG的OPEN二次开发功能及其WAVE技术的相结合,开发实现了该系统,并对实现该系统的关键技术进行了详细的阐述,主要包括夹具知识库的建立及夹具体等非标准灵活性零件的设计过程等。最后进行了工程应用,结果表明该系统能提高组合机床夹具设计的效率和质量。     

基于UG／WAVE软件的产品级参数化设计

近年来产品级的参数化设计方法越来越受到设计人员的重视和喜爱。文中介绍了该设计思想的基本概念和UG／WAVE基本功能,探讨了UG／WAVE自顶向下的建模技术在设计中的应用。通过一个产品设计实例,结合作者自己的使用经验和体会,具体说明了在产品设计中如何利用UG／WAVEI欢件实现产品级参数化设计。     

基于UG MoldWizard的照相机塑料模具设计

介绍了UG软件在照相机的产品设计和模具设计中的应用,采用UG MoldWizard模块对照相机后盖进行了详细的模具设计,为复杂产品在UG软件中的模具设计提供了设计思路和方法.     

面向保质设计的产品设计质量模糊评价

保质设计(Design for Quality)是将质量保证和质量管理融入到产品设计中的一种新的设计方法.在M.Morup两类质量论的基础上,介绍了保质设计的概念模型及产品开发方法,提出保质设计中基于功能特征模型的产品设计质量模糊评价方法,并以机床工业中普遍使用的可编程序控制器为例,详细给出了该方法的主要步骤、数学模型及应用实例.     

UG二次开发在模架设计中的应用

通过对模架的研究和分析,以及对UG二次开发方法的研究与应用。采用UG二次开发技术和数据库技术对模架进行造型设计,从而优化产品设计结构,缩短产品开发周期,提高了产品设计效率。     

铣钻汽车"十字"轴的组合机床设计

将数控功能部件纳入组合机床的设计,充分提高组合机床的柔性及与制造信息化接口的能力,将是组合机床发展的一个新方向。文中介绍了汽“车十字”轴零件铣钻工序组合机床的设计结构及控制方案,探讨了经济型数控功能部件在该组合机床设计中的应用方案,对拓宽组合机床设计思路具有一定的指导意义。     

基于UG/WAVE复杂产品自顶向下设计方法研究

针对机械产品零部件传统设计方法存在的缺陷与不足,介绍了UG/WAVE技术及产品自顶向下设计建模方法。并基于UG/WAVE设计平台建立了56-1轻机枪产品的总体控制结构,把相关的约束信息传递到详细设计的产品装配当中,实现了轻机枪枪管部件的并行设计,从而缩短了设计更新所需要的时间,在一定程度上提高了产品设计效率。     

基于UG的节筒坡口加工机床参数化设计

笔者在分析节筒结构和加工技术要求的基础上,利用UG软件的参数化设计功能,提出一种节筒坡口加工机床参数化设计方法,实现了节筒坡口加工机床零部件三维建模、虚拟装配过程和运动仿真过程的参数化,创建了标准件库.实践证明,该方法提高了设计水平和设计效率,并保持了零部件信息的一致性.在此基础上创建的标准件库具有良好的开放性和可拓展性.     

五轴数控工具磨床的模块化设计

提供了一种通过调整机床单元参数实现机床模块化与可重构的设计方法,并基于三维软件开发了针对数控工具磨床的模块化设计系统,使机床能够快速响应用户需求,提高了机床在未来的机床市场的竞争力.     

运用改进模糊C均值算法的复杂产品功构单元模块划分方法

为了解决目前已有聚类方法在复杂产品功构单元模块划分过程中存在的问题,提出了一种基于改进模糊C均值算法(D-FCM)的产品功构单元模块划分方法。该方法运用距离矩阵生成样本分层聚类树,结合F统计量方法确定模糊C均值算法最佳聚类数,在此基础上,应用模糊C均值算法进行聚类分析,获得聚类结果。最后,结合实际项目给出该聚类方法在机床模块划分过程中的典型应用,对该方法进行实例验证。以此为基础,开发出机床模块划分系统平台。系统实现及设计结果表明了所提出方法的有效性,为面向配置设计的机床模块划分提供了另一种有效的模块划分方法。     

STC100valve数控阀门专用机床设计

针对阀门（闸阀）制造业阀门体的制造工艺要求,作者根据多年设计机床经验开发设计了一种高性能、高效率的数控阀门专用机床,并将模块化设计理念贯穿到专机设计中。该机床在分析市场需求及零件加工工艺的基础上进行设计,将镗床平旋盘技术成功地应用到车床上。可实现阀门行业阀门体零件的一次装夹,多工序复合化加工的要求。样机试制完成后,证明该数控专用机床可以很好地解决阀门加工效率和质量稳定性问题,设计是成功的。     

机电一体化书刊胶订联动线模块化设计与创新

介绍了产品的模块化设计理论,并以书刊胶订联动线的模块化设计为例,进一步阐述了模块化设计的方法,同时指出了产品模块化创新设计的意义。     

Representation of similarity and dependency for assembly modularity

Researchers have expanded the definition of product modularity from function-based modularity to life-cycle process-based modularity, and developed a measure of product modularity and validated a corresponding modular product design method. However, a correct modularity measure and modular design method are not enough to realize modular product design. How the measure and design method are used, especially the role of product representation, is an important aspect of modular design and imperative for realizing the promised cost savings of modularity. In this paper, we develop a representation that includes similarity and dependency for assembly modularity. The similarity representation is based on assembly cost factors including tool changes and fixture changes. The process-based design dependency representation is based on design features that impact the assembly process (faces, fasteners, assembly interference, etc.). This representation captures the cost benefits of modularity and can be extended to other life-cycle processes. A set of products is used to show the application of this representation in association with a modularity measure and modular design method.     

虚拟机床建模与仿真

按照模块化设计的原理,从虚拟制造的角度对机床的结构进行抽象,分析了虚拟机床设计的各种约束关系,在此基础上,建立了虚拟机床的结构模型,讨论了在虚拟机床设计中需要研究的问题。     

Modular design method based on simultaneous consideration of physical and functional relationships in the conceptual design stage

There are many benefits of a modular product including reduced cost, rapid product development and reduced production time. The modular design of products has been increasingly popularized in modern engineering design activity. A new design method is proposed to design a modular product based on relationships among functional requirements of the product to overcome the difficulty of modular design. Axiomatic design, the function-based design method and design structure matrix are efficiently combined in the proposed method. Functional requirements and design parameters are defined based on the independence Axiom of axiomatic design and the zigzagging process of axiomatic design is employed for the decomposition of functional requirements and design parameters. The function-based design method is utilized for the decomposition of functional requirements and the design structure matrix is used to modularize the design parameters of the bottom level of the zigzagging process. Three design examples are demonstrated to validate the proposed method. The results are discussed and the usefulness of the proposed method is presented.     

Product modular design incorporating preventive maintenance issues

Traditional modular design methods lead to product maintenance problems, because the module form of a system is created according to either the function requirements or the manufacturing considerations. For solving these problems, a new modular design method is proposed with the considerations of not only the traditional function related attributes, but also the maintenance related ones. First, modularity parameters and modularity scenarios for product modularity are defined. Then the reliability and economic assessment models of product modularity strategies are formulated with the introduction of the effective working age of modules. A mathematical model used to evaluate the difference among the modules of the product so that the optimal module of the product can be established. After that, a multi-objective optimization problem based on metrics for preventive maintenance interval different degrees and preventive maintenance economics is formulated for modular optimization. Multi-objective GA is utilized to rapidly approximate the Pareto set of optimal modularity strategy trade-offs between preventive maintenance cost and preventive maintenance interval difference degree. Finally, a coordinate CNC boring machine is adopted to depict the process of product modularity. In addition, two factorial design experiments based on the modularity parameters are constructed and analyzed. These experiments investigate the impacts of these parameters on the optimal modularity strategies and the structure of module. The research proposes a new modular design method, which may help to improve the maintainability of product in modular design.