共查询到18条相似文献,搜索用时 203 毫秒
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在利用三维CAD软件开发产品的过程中,针对设计模型可能发生的反复改动,采用能捕捉设计意图的相关参数化建模的方法,使模型具备跟随设计意图的同步编辑能力,从而提高了设计效率。文中介绍了相关参数化的建模方法,并给出了应用实例。 相似文献
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基于Pro/ENGINEER的参数化产品设计 总被引:3,自引:0,他引:3
在产品设计中,功能需求的改动直接影响整个产品模型的高层结构,进而影响到产品配置中各个零部件的政变。基于特征的参数化设计为产品模型的可变性、可重用性、并行设计等提供了手段,使用户可以利用以前的模型方便地重建模型,并可以在遵循原设计意图的情况下方便地改动模型,生成系列产品,提高了生产效率。应用参数化建模技术来直接面对产品进行设计,可以提高设计质量,缩短设计周期,降低试制成本,保存设计经验和提高管理水平,为产品的设计和制造的整个生命周期提供支持。 相似文献
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自上而下的设计模式符合产品的设计思路,Pro/E软件装配模式下的骨架模型设计是自上而下设计的方法之一.设计了浆体泵泵体的参数化骨架模型,并通过骨架模型创建了泵体零件,通过改变泵体骨架模型参数,实现了泵体的参数化设计和系列化设计.Pro/E软件骨架模型反映了产品的总体结构和设计方案,保证了产品设计合理性和装配的准确性,对... 相似文献
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本文主要探究参数化设计在产品造型设计中的应用场景和应用方法,通过对目前参数化设计概念特征、参数化建模技术、产品造型设计流程的综述,总结了基于Grasshopper的产品造型设计建模流程,并借助Grasshopper参数化平台对实际产品案例进行模型构建实践,验证了该设计流程的有效性。同时也拓展了参数化产品造型设计理论,为设计师进行相关设计实践提供了理论指引。 相似文献
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基于UG的产品级三维参数化设计研究 总被引:1,自引:0,他引:1
参数化设计技术已成为产品设计过程中一种最重要的设计方法.按照所对应的对象,参数化设计分为零件级参数化设计和产品级参数化设计,零件级参数化设计技术已在生产实践中得到成功的应用,但还不便于实现产品级参数化设计,而目前的设计过程却要求实现整个产品的三维参数化.为此,基于UG软件研究了产品级三维参数化设计技术,提出了利用UG/... 相似文献
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基于Pro/E二次开发的机械产品的三维参数化设计 总被引:1,自引:0,他引:1
采用Pro/Program模块对Pro/E进行二次开发,实现了产品整机模型的结构参数化设计.大大地简化了产品设计的过程,提高了设计效率和设计质量.作为应用实例,对弧面凸轮机械手产品进行了研究.通过对产品装配模型中原始结构设计参数的重新赋值,利用参数关联和传递的驱动机制,自动生成满足产品设计要求的三维参数化结构模型,快速地完成的产品的变形设计. 相似文献
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Changes in requirements may result in the increasing of product development project cost and lead time,therefore,it is important to understand how requirement changes propagate in the design of complex product systems and be able to select best options to guide design.Currently,a most approach for design change is lack of take the multi-disciplinary coupling relationships and the number of parameters into account integrally.A new design change model is presented to systematically analyze and search change propagation paths.Firstly,a PDS-Behavior-Structure-based design change model is established to describe requirement changes causing the design change propagation in behavior and structure domains.Secondly,a multi-disciplinary oriented behavior matrix is utilized to support change propagation analysis of complex product systems,and the interaction relationships of the matrix elements are used to obtain an initial set of change paths.Finally,a rough set-based propagation space reducing tool is developed to assist in narrowing change propagation paths by computing the importance of the design change parameters.The proposed new design change model and its associated tools have been demonstrated by the scheduling change propagation paths of high speed train’s bogie to show its feasibility and effectiveness.This model is not only supportive to response quickly to diversified market requirements,but also helpful to satisfy customer requirements and reduce product development lead time.The proposed new design change model can be applied in a wide range of engineering systems design with improved efficiency. 相似文献
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S. Yao X. Han Y. Yang Yiming Rong S. H. Huang D. W. Yen G. Zhang 《The International Journal of Advanced Manufacturing Technology》2007,32(1-2):218-228
To facilitate the computer-aided manufacturing planning (CAMP) for mass customization, an information model is developed for
integrating the information exchange in different levels of CAMP activities. The correlative relationships between product
design and manufacturing processes are established by using an object-oriented system analysis model so that the manufacturing
system design can be adaptive to the change of the product design. The information model is implemented in a prototype CAMP
system for part family. 相似文献
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Developing an Integrated Intelligent Framework to Support an Engineering Change Process for an Axial Piston Pump 总被引:2,自引:0,他引:2
C. Ou-Yang C. W. Chang 《The International Journal of Advanced Manufacturing Technology》1999,15(5):345-355
Since the concepts of concurrent engineering were introduced in mid 1980s, the product design process has become complicated.
This is because many factors related to the life cycle of the product may need to be considered during the design stage. Therefore,
shortening product development time becomes important for the survival of an enterprise. In this paper, an integrated intelligent
environment to support concurrent engineering is proposed. Two major modules are provided by this system to assist change
management. One is a constraint network module that analyses the related constraints about a design change to find the design
variables influenced. Another is a product assembly module that extracts the design data from a CAD database to analyse the
spatial relationships relating to an assembly. The data in the above two modules are integrated in a data integrated module,
in which an entity relational data model was developed to describe the integrated data. Finally, a web-based query system
was developed to provide a multiplatform environment for the user to refer to the data in the constraint network module and
the product assembly module during a design change process. The proposed environment is implemented in the design change process
for an axial piston pump. 相似文献
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飞机数字化设计工程数据管理技术研究 总被引:3,自引:0,他引:3
飞机设计过程中的工程数据管理及其具体内容,已成为实现数字化飞机设计的关键。结合飞机设计工程数据管理系统的开发,提出并描述了由集成文挡、产品结构和更改控制组成的飞机数字化产品模型,阐述了飞机设计工程数据管理系统的功能模型,重点讨论了系统中产品结构树的生成算法,最后提出了基于工程数据管理的数字化飞机并行设计过程模型。 相似文献
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采用集CAD与CAE一体的设计方法进行产品设计,可减少实物模型和样机的投入,避免设计缺陷,缩短产品开发周期,降低产品开发及制造成本。文中利用Pro/ENGINEER的CAE模块MECHANICA进行传动轴的强度和刚度校核,对相关设计参数发生变化引起的强度和刚度变化做了敏感度分析,还通过优化分析得到了最佳设计参数,为工程实践提供了一个可供借鉴的CAD/CAE案例。此外,用Mathcad对有限元分析结果加以计算验证,保证了设计的可靠性。 相似文献
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基于物-场可供性模型提升产品设计质量的研究 总被引:4,自引:0,他引:4
现有的产品设计主要是基于功能的设计,着重于结构对功能的实现。但是,产品的功能无法完整反映产品的全部设计要求,不宜用功能表达的设计要求通常用"可供性"来表达。大量设计表现为主要功能保持不变,而通过考虑可供性来实现产品进化。在可供性理论与物-场分析理论基础上,提出一种面向产品概念设计过程基于"物-场可供性"模型提升产品设计质量的方法。将"物-场可供性"模型集成到现有的功能设计流程中,再利用实体交互矩阵分析产品设计方案中积极与消极交互作用,通过对积极作用最大化、消极作用最小化优化产品原理方案,实现产品设计质量的提升。采茶机的设计实例验证了基于"物-场可供性"模型的设计方法可以有效提升产品设计质量。 相似文献