点云反求造型设计---叶片

机械设计制造及其自动化论文，论文编号:JX1141  论文字数:11360.页数:28

 摘  要
 逆向工程是现代产品设计的新技术，具有复杂曲线、曲面设计功能，在汽车、叶片的设计中得到广泛应用。另外随着消费者对工业产品美观性、新颖性要求的提高，企业新产品的推出速度及制造上的柔性程度越来越成为激烈时常竞争中的关键因素。逆向工程技术在产品开发方面所表现出来的快捷性使其在制造业中迅速得到了推广和普及。本文阐述了逆向工程的设计方法，曲线、曲面反求的基本原理和步骤，讨论了逆向工程的意义、应用、坐标数据测量、基于测量数据的模型重建等问题。并结合作者从事叶片3D模型的毕业设计，给出了几个应用实例。
 关键词：逆向工程  叶片  曲线  曲面  覆盖件 
  
Abstract
 RE is a new technology applied to modern product design. It can be used to design complex curve and surface and has been widely applied in the design of auto. With other consumer products to industrial appearance, the new requirements increase, enterprises the introduction of new products and the speed of Flexible manufacturing has become increasingly fierce competition often a key factor. Reverse engineering technology in product development performance by the rapidity of it in the manufacturing sector has been rapidly spread and popularize. This article expatiates on the method of product design with RE, the rationale and process of curve and surface reverse design. The critical problem in reverse engineering, coordinate measuring and model reconstruction, are addressed in this paper and gives several application examples on the base of the author engaging in the project graduation about the 3D design of MFS.
 
 Key words: Reverse engineering     Impeller    Curve   Surface   Facing section

 目  录
 摘  要 II
 Abstract III
 目  录 IV
 第一章  绪论 1
 1.1 逆向工程的定义 1
 1.2逆向工程技术发展状况 2
 1.2.1逆向工程技术的硬件概况 2
 1.2.2逆向工程技术的软件概况 2
 1.3逆向工程的特点 2
 1.4 逆向工程核心问题 4
 1.5 逆向工程的应用 5
 第二章  数据转换和处理 6
 2.1  叶片上半部数据处理 6
 2.1.2测量数据输入 6
 2.1.2  叶片点云数据处理 7
 2.1.3   叶片特征线处理 9
 2.1.4  曲线数据导出 11
 2.2   叶片下半部数据处理 13
 2.2.1  叶片下半部数据处理 13
 2.2.2  曲线数据导出 14
 第三章  曲面处理 15
 3.1  UG软件简介 15
 3.1.1  零件结构分析 15
 3.1.2  数据采集(产品数字化) 15
 3.1.3  数据处理 15
 3.1.4  模型重建 15
 3.2  曲面造型 16
 3.2.1  曲面创建 16
 3.2.2  叶片上半部曲面处理 17
 3.2.3  叶片下半部的曲面处理 18
 3．2．4 叶片整体曲面处理 20
 总 结 22
 致 谢 23
 参考文献 24