基于UG的链焊机虚拟装配

机械设计制造及其自动化论文，论文编号:JX1188  论文字数:14764.页数:37

摘     要

 本文主要运用UG软件对自动链焊机进行三维图的绘制，以及对其进行虚拟装配，UG中的虚拟装配是由其中的ASSEMBLY(装配)模块完成的。      UG虚拟装配设计有自底向上(Bottom-up)设计和自顶向下(Top-down)设计2种。其中前者是指在设计过程中，先设计单个零部件，在此基础上进行装配生成总体设计。这种装配建模需要设计人员交互给定配合构件之间的配合约束关系，然后由UG系统自动计算构件的转移矩阵，并实现虚拟装配。然而，交互给定构件之间的配合约束关系不仅费事，并且当构件之间的配合较多时，容易出现约束不当或约束出错等情况。也只有在进行装配时才能发现零件设计是否合理，一旦发现问题，就要对零件重新设计，重新装配，发现问题再进行修改，而Topdown的设计方式正避免了以上缺点，可以方便、直接接地进行设计。
 虚拟装配将从根本上改变传统的产品设计和制造模式，在实际生产之前，首先在虚拟制造环境中完成虚拟产品原型代替实际产品进行试验，对其性能和可装配性等进行评价，从而达到整个产品全局最优，缩短产品设计与制造周期，降低产品开发成本，提高产品快速响应市场变化的能力。
关键词：UG软件   自动链焊机   虚拟装配

Abstract
 In this paper, the use of UG to the Automatic chain welding machine software for three-dimensional mapping, as well as their virtual assembly, UG Virtual assembly is one of the ASSEMBLY (assembly) module completed.        UG virtual assembly bottom-up design (Bottom-up) design and top-down (Top-down) design of two kinds. The former of which refers to the design process, the first design of the individual components, on the basis of design for assembly generation. Assembly modeling that designers need to interact with a given component with the binding relationship between, and then automatically calculated by the UG system transfer matrix elements and the realization of virtual assembly. However, the interaction between a given component with the binding relationship is not only cumbersome, and when the co-ordination between the components were more easily bound by binding or improper error and so on. Only during the assembly parts can be found in the design is reasonable, and once problems are detected, it is necessary to re-design of parts, re-assembly and found that the issue of further changes to the design and Topdown is to avoid the above shortcomings can be easily and directly to ground Design. Virtual assembly will fundamentally change the traditional product design and manufacturing model, in the actual production, first in a virtual manufacturing environment to complete a virtual prototype instead of the actual product testing, its performance and evaluation of assembly, etc., so as to achieve the entire global optimum products to shorten product design and manufacturing cycles, reduce product development costs and improve products to respond quickly to market change.
Keywords：UG software    Automatic chain welder   Virtual assembly  

目  录
中文摘要…I
英文摘要…II
目录…III
第一章     绪论…1
1.1  课题背景和目的及意义…1
1.2  本文主要研究的内容…2
第二章     三维造型的设计方法…3
2.1   三维造型方法…3
2.1.1  线框造型…3
2.1.2  曲面造型…4
2.1.3  实体造型…5
2.2   产品结构的主要特征和合理的建模顺序5
2.3   曲面造型技巧…6
2.3.1  化整为零…6
2.3.2  建立光顺的曲面片控制线6
2.3.3  轮廓线删繁就简构造曲面7
2.3.4  曲面光顺评估…7
第三章     UG三维造型软件概述…8
3.1   UG三维造型软件概述8
3.1.1  UG软件特点9
3.2   UG实体特征…10
3.2.1  UG建模的基本术语10
3.3   建模基准…11
3.3.1  建模特征及其作用11
3.3.2  建立基准面…12
3.4   常用工具介绍13
3.4.1  点构造器13
3.4.2  向量构造器…17
第四章     链焊机造型与装配…21
4.1   链焊机实物图…21
4.2   三维造型…21
4.2.1  左侧面造型…21
4.2.2  后侧面造型…22
4.2.3  基本框架造型24
4.2.4  升降台支架造型…25
4.2.5  整个框架造型25
4.2.6  凸轮造型26
4.3   装配 27
4.3.1  凸轮与凸轮轴装配27
4.3.2  凸轮轴与机架装配29
第五章    设计总结31
参考文献…32
致谢…33