反求建模理论与技术..docx

机械CAD/CAM课程第一次作业题目：反求建模理论与技术专业：机械设计制造及其自动化姓名：赵耀车明帆（072115-30 072115-31）学院：机械与电子信息学院指导教师：文国军2014年5月摘要：反求工程是指用一定的测量手段对实物或模型进行测量，根据测量数据通过三维几何建模方法重构实物的CAD模型的过程，是一个从样品生成产品数字化信息模型，并在此基础上进行产品设计开发及生产的全过程。反求工程这一术语起源于20世纪60年代,但对它从工程的广泛性去研究,从反求的科学性进行深化还是从20世纪90年代初刚刚开始。其研究对象主要包括实物类、软件类和影像类。反求工程的关键技术包括?实物原型的数字化技术，数据点云的预处理技术，三维重构基本方法，曲线曲面光顺技术和逆向工程的误差分析与品质分析。在工程设计领域,反求工程具有独特的内涵,可以说它是对设计的设计。本文从反求工程的发展历程、研究现状、未来发展方向以及研究重点对反求工程CAD建模技术进行了全面介绍，并结合当今反求建模技术的发展情况给出了应用举例。关键词：反求工程；CAD建模；发展历程；研究现状；发展方向；研究重点Abstract：Reverse engineering refers to a certain kind or model of measuring instruments to measure, according to the measurement data reconstruction kind of three-dimensional geometric CAD model by modeling process, from sample to generate a digital product information model, and on this basis product design and development and production of the entire process.Reverse engineering the term originated in the 1960s, but it went from extensive research project, carried out from a scientific or reverse the deepening of the early 1990s had just begun.Its main object of study include physical classes, software classes and video classes.Thekey technologies of reverse engineeringinclude in-kind prototype digital technology, point cloud data preprocessing technology, three-dimensional reconstruction of basic methods, error analysis and quality curve and surface smoothing technology and reverse engineering analysis.In the field of engineering design, reverse engineering has unique content, you can say it is a design design. .In this paper, the development process of reverse engineering, research status, the direction of development and research focused on reverse engineering CAD modeling technology for a comprehensive introduction to the future and reverse modeling technology combined with todays development application examples are given.Key words：Reverse engineering;CAD modeling;Development process;Present research situation;Development direction;Research priorities目录第一章反求建模理论与技术的发展历程与研究现状31.1 反求工