摘　要

21世紀(jì)的制造業(yè)正面臨著越來越激烈的全球化市場競爭，而快速與創(chuàng)新的產(chǎn)品開發(fā)技術(shù)是目前眾多制造企業(yè)的迫切需求。逆向工程技術(shù)以其快捷有效縮短開發(fā)周期已經(jīng)成為產(chǎn)品開發(fā)中的一個重要的方法，本論文面向產(chǎn)品快速開發(fā)對逆向工程技術(shù)進(jìn)行了研究。
本文首先介紹了逆向工程的定義、技術(shù)流程、實施的條件、應(yīng)用范圍等相關(guān)知識，對逆向工程的關(guān)鍵技術(shù)做了詳細(xì)歸納和充分了解。然后運(yùn)用德國ATOS掃描系統(tǒng)，結(jié)合企業(yè)項目，完成美國房車空調(diào)上蝸殼零件的掃描，獲取了該零件的數(shù)據(jù)，并做了相應(yīng)數(shù)據(jù)處理，得到蝸殼零件的完整點(diǎn)云數(shù)據(jù)。最后在三維建模軟件——UG中，對該零件進(jìn)行了詳細(xì)建模，最終獲得優(yōu)越的數(shù)字化模型，充分體現(xiàn)了逆向工程進(jìn)行零件設(shè)計的優(yōu)勢。


關(guān)鍵詞：逆向工程，數(shù)字化掃描，數(shù)據(jù)獲取，數(shù)據(jù)處理，模型重建

ABSTRACT

The manufacturing industries are facing the globe market competition in the 21st Century，and lots of manufacturing companies require urgently the rapid R&D technique to adapt the market, the rapidness and innovation are the basic characteristics of the product development. RE (reverse engineering) technique，with its efficiency and rapidness, is becoming one of the key techniques for product research and development. Focused on the field of the rapid product development, the key technologies of reverse engineering system are studied in the thesis.
This paper first introduced some relevant knowledge of RE like the definition of RE, technical processes, implementation of the conditions, the scope of application of RE, etc. And make a detail summarized and fully understand on the key technologies of RE. And then use ATOS scanning system of Germany, combined enterprise projects, achieved the scanning of the Upper Volute of Air conditioning on U.S. Recreational Vehicle, collected the data of this part, and made some corresponding data processing, get the full point cloud data of the volute. Finally, it created detail model in 3D modeling software—UG, get ultimately superior digital model. Fully reflects the advantages of using RE to design parts.


Keywords：Reverse engineering, Digital scanning, Data collection, Data processing, Model reconstruction










目　錄

摘　要 I
ABSTRACT II
1　緒論 1
1.1前言 1
1.2 逆向工程概述 1
1.2.1 逆向工程的概念 1
1.2.2 逆向工程的技術(shù)流程 2
1.2.3 逆向工程的應(yīng)用領(lǐng)域及其意義 3
1.2.4 逆向工程的關(guān)鍵技術(shù) 4
1.2.5 逆向工程實施的硬件和軟件條件 5
1.3 本課題研究項目 5
２　數(shù)據(jù)獲取 6
2.1 接觸式測量方法 6
2.2 非接觸式測量方法 7
2.2.1 激光三角法 7
2.2.2 光柵投影法 8
2.3 ATOS流動式光學(xué)掃描儀簡介 8
2.3.1 ATOS掃描測量工件的前期準(zhǔn)備 10
2.3.2 ATOS掃描系統(tǒng)的掃描方式 13
2.4 蝸殼零件表面數(shù)據(jù)的獲取 13
3 數(shù)據(jù)處理 15
3.1 點(diǎn)云數(shù)據(jù)的處理 15
3.1.1 點(diǎn)云 15
3.1.2 噪聲去除 16
3.1.3 多視對齊 17
3.1.4 數(shù)據(jù)精簡 17
3.1.5 數(shù)據(jù)光順 17
3.1.6 數(shù)據(jù)分割 18
3.2 逆向軟件Imageware簡介 18
3.3 蝸殼零件點(diǎn)云數(shù)據(jù)的處理 19
4 模型重建 21
4.1 CAD模型重建技術(shù) 21
4.1.1 曲面造型方法 22
4.1.2 三維造型軟件UG簡介 22
4.2本文使用的建模方法 23
5　建模過程 24
6　總結(jié) 32
致謝 33
參考文獻(xiàn) 34