【作者】 张丹；

【导师】 廖明宏；

【作者基本信息】 厦门大学 ， 软件工程， 2014， 硕士

【摘要】 近年来,数字化装配技术受到了广泛关注,数字装配系统可以不依赖建立实际的装配物理环境,将虚拟环境引入到产品的设计阶段,模拟与分析产品的装配过程,快速评价装配方案,对产品的装配工艺过程进行验证和改进。一方面提高了产品装配效率,另一方面,可以在设计阶段发现装配过程中的问题,并将其反馈给设计人员。这样提高产品质量、缩短研制时间、降低设计成本。本文针对数字化装配技术的特性,研究了数字装配系统的设计与实现。重点研究装配工艺信息建模,装配数据集结构设计、装配工艺信息映射以及集成共享技术。分析了基于三维模型的装配工艺信息的表达,实现了对装配工艺信息的管理,并建立了工艺信息可视化模型。最后,以装配工艺信息建模和集成共享技术为基础开发了数字装配系统,实现了装配信息的管理及艺信息模型的转换等功能。论文主要从以下方面进行了较详细的研究：1、装配工艺设计中系统对大装配的实现技术要求比较高,产品装配顺序生成的效率很大程度上决定于产品装配体的层次树结构,而产品合理子装配的划分是形成产品层次树的基础。2、定义的拆卸零部件决定了装配零部件的粒度。在装配结构树中,确定哪些零部件将被拆离,形成拆卸BOM结构。3、采用拆卸的方式定义装配活动,装配工艺对象是已设计好的产品,由于装配是拆卸的逆过程,并且用拆卸不必考虑装配时的精确定位,所以简单可行。本系统支持直线、旋转、螺旋、平动、牵引、径向、周向等七种运动定义,并可显示装配轨迹路径。4、系统提供了剖切、线框、局部放大等手段。为了增强装配过程的描述,提高装配仿真的可操作性及实用性,该系统还支持标签、装配尺寸测量、文本、图像、序号标注、BOM表格、箭头等各类技术图解。更多还原

【Abstract】 Digital assembly technology has received the widespread attention recent years.It can create a virtual environment on a computer during the design phase of products,simulate and analyze products assembling process,evaluate assembling programme rapidly,verify and improve the assembling process to promote assembling efficiency,ensure early detection of problems that may occur in the process of assembling, and timely assembly information feedback to designers, so as to improved product quality, shorten development cycles and reduce development costs.According to the characteristics of digital assembly technology,this article studied the design and implementation of digital assembly system.It focuses on assembly process information modeling, structure design of assembling mapping data sets and integrated sharing technology,analyzed the expression of assembly process information based on the three-dimensional model, realized the management of the assembly process information, and established visualization model of technology information.Finally,developed digital assembly system on the basis of assembly process information modeling and integrated shared technology, implemented the assembly information management and the conversion of information model and so on.The essay carried out detailed research mainly from the following aspects:1.The technology of large assembly realization in the assembly process design system is required in high level,to a great extent,the generation efficiency of product assembly sequence,depends on the level of the product assembly tree structure, and the division of reasonable sub product assembly is the base of hierarchy tree of products.2.The particle size of assembly parts controlled by system and components under the root node of assembly structure can define their disassembly activities, other components, unless be removed to the root node, otherwise, can’t take part in remove activities independently.3.Define assembly by disassembly, assembly process object is completely designed product, it’s simple and feasible because the assembly is the inverse process of disassembly, and we don’t have to consider the accurate positioning of removing.This system supports seven sports definition including linear,rotating,spiral,translation,traction,radial,circumferential,and it can display assembly trajectory path.4.The system provides the means such as cutting,wire frame,local amplification.In order to enhance the description of the assembly process, improve the maneuver ability of the assembly simulation and practical, it also supports tags,assembly dimension measuring,text,image,sequence number mark,BOM form, arrow,and all kinds of technology illustrations.更多还原