點(diǎn)云反求造型設(shè)計(jì)——汽車車燈

機(jī)械設(shè)計(jì)制造及其自動化論文，論文編號:JX1301  論文字?jǐn)?shù):11105.頁數(shù):37

摘要
  逆向工程(Reverse Engineering,簡稱RE)也稱為反向工程或反求工程，是將實(shí)物轉(zhuǎn)換為CAD模型的相關(guān)數(shù)字化技術(shù)、幾何模型重建技術(shù)以及產(chǎn)品制造技術(shù)的總稱。對于當(dāng)今汽車行業(yè)的高速發(fā)展，如何縮短開發(fā)周期，保證產(chǎn)品質(zhì)量，以及如何迅速、精確、方便的獲得汽車部件的三維數(shù)據(jù)及模型成了關(guān)鍵。
 本文通過提出一種逆向工程應(yīng)用于汽車車燈產(chǎn)品開發(fā)過程中的解決方案，對一些關(guān)鍵技術(shù)做出簡要的論述，并闡述了如何進(jìn)行汽車車燈的反求處理和誤差分析。在具體的實(shí)施過程中，通過在逆向軟件Geomagic中對原始點(diǎn)云階段，對掃描出來的原始點(diǎn)云數(shù)據(jù)進(jìn)行處理，然后通過多邊形階段，曲面階段，CAD階段四個階段的進(jìn)一步處理得出一個汽車車燈的三維曲面模型，最后并進(jìn)行誤差分析。

關(guān)鍵詞：逆向工程  汽車車燈  Geomagic  點(diǎn)云數(shù)據(jù)

Abstract
  Reverse Engineering (Reverse Engineering, referred to as RE), also known as reverse engineering or reverse engineering is to convert the CAD model of physical digital technology related, geometric model reconstruction, and general manufacturing technology.For the rapid development of today; automotive industry, how to shorten the development cycle to ensure product quality, and how fast, accurate and easy access to car parts has become a key three-dimensional data and models.
 This paper presents a reverse engineering for automotive lamp product development process solutions to some of the key technologies with a brief discussion, and explained Ruhejinxing car Chedeng's Fan request processing and error analysis.In the specific implementation process, through the software Geomagic reverse on the original point cloud phase, the original scanned point cloud data processing, and then polygon phase, surface phase, CAD phase of the four stages of further processing to arrive at a car light of the three-dimensional surface model, and eventually analyze the errors.   Keywords: Reverse Engineering  Auto Lamp   Geomagic  Point cloud 
 
目  錄
摘要 i
Abstract ii
第一章    緒論 1
 1.1  逆向工程定義 1
 1.2  逆向工程的應(yīng)用范圍和基本要求 1
 1.3  逆向工程的發(fā)展趨勢 3
   CAD建模理論 4
 2.1  曲線曲面理論 4
 2.2  主要逆向工程軟件 5
   逆向工程關(guān)鍵技術(shù) 7
 3.1  點(diǎn)云獲取 7
 3.2  點(diǎn)云數(shù)據(jù)處理 7
 3.3  NURBS曲面重構(gòu) 8
   汽車車燈反求造型 11
 4.1  引言 11
 4.2  汽車車燈逆向工程開發(fā)流程 11
 4.3  geomagic點(diǎn)云數(shù)據(jù)處理 12
 4.4  點(diǎn)云誤差分析 33
第五章    總結(jié) 35
參考文獻(xiàn) 36
致謝 37