摘 要

車架是沙灘車車的關(guān)鍵零件，車架結(jié)構(gòu)直接影響到摩托車的舒適性和安全性。本文在對樣車車架測量的基礎(chǔ)之上，使用CATIA軟件建立車架的三維模型。
本文以CATIA為平臺，對虛擬裝配路技術(shù)進行了初步研究。文中詳細介紹了國內(nèi)外虛擬裝配技術(shù)的發(fā)展與研究現(xiàn)狀，并對CATIA中虛擬裝配技術(shù)模塊進行研究。成功解決了基于CATIA平臺的虛擬裝配技術(shù)的一系列基本問題，如幾何建模方法、基本裝配約束的建立、基于可拆可裝假設(shè)下拆卸引導(dǎo)路徑信息的獲取和路徑的規(guī)劃、按照所規(guī)劃出的路徑進行動態(tài)裝配仿真等等。文中還結(jié)合生產(chǎn)過程中的實際裝配情況，對可裝配與可拆卸之間的關(guān)系進行了研究和分析也對虛擬裝配的路徑規(guī)劃技術(shù)的主要難點作了分析和總結(jié)。
本論文重點是以數(shù)字化產(chǎn)品設(shè)計中如何實現(xiàn)沙灘車車架的裝配為研究對象，重點研究車架的幾何建模、設(shè)計裝配流程和路徑（裝配規(guī)劃）。（其中包括定義約束，協(xié)同裝配設(shè)計關(guān)系，應(yīng)用配合關(guān)系將零件及部件裝配成裝配圖，最后生成爆炸圖）。


關(guān)鍵詞：車架，幾何建模，虛擬裝配，裝配規(guī)劃，爆炸圖














ABSTRACT

ATV frame is one of the key Parts of motoreyele. The strueture of ATV frame direetly influences the comfortableness and security of motoreycle.Basing on the measure data of asample ATV frame，establishing the frame mode of CATIA.
Many researches on virtual assembly technology based on the CATIA platform were presented in this dissertation.The current researches on virtual assembly technology module were provided in CATIA .The series of key problems for the virtual assembly based on CATIA platform were solved,such as the geometric modeling method, The establishment of assembly constraints，assembly path planning based on the theory that can be disassembled and can be assembled,dynamic assembly simulation according to the planned path,and so on.Combining with actual assembly of production process,the relation between assembly and disassembly were presented in detail,in this dissertation,and main difficulties of path planning in virtual assembly process were analysed and summarized too.
The study subject of this research papers is how to implementation the assembly of ATV frame, it emphasizes on geometric modeling 、designing the assemble process and assembly path. (It comprises defining restrictions, the relation of cooperative design, using the relation of attachment to form an assembling diagram of ATV frame, and develop to an explosion diagram and facture animation simulation.


Keywords：ATV frame , geometric modeling , virtual assemble, assembly planning, explosion diagram











目錄


摘 要 I
ABSTRACT II
1. 緒論 1
1.1引言 1
1.2 國內(nèi)外研究現(xiàn)狀 1
1.3 課題研究內(nèi)容和重點 2
2 JS400ATV全地形車和CATIA主要相關(guān)功能介紹 4
2.1 JS400ATV的概況 4
2.1.1 JS400ATV的簡要介紹 4
2.1.2 JS400ATV相關(guān)發(fā)展概括 5
2.1.3 JS400ATV車架 5
2.2 CATIA主要相關(guān)功能介紹 6
2.2.1 概述 6
2.2.2 MECHANICAL DESIGN（機械設(shè)計） 7
2.2.3 DIGITAL MOCKUP（數(shù)字樣機） 8
3 基于CATIA的車架虛擬裝配 9
3.1 虛擬裝配技術(shù) 9
3.1.1 虛擬環(huán)境 9
3.1.2 虛擬裝配 9
3.1.3 虛擬裝配的關(guān)鍵技術(shù) 10
3.1.4 虛擬裝配流程 11
3.2 車架零部件幾何建模 12
3.2.1 零件設(shè)計一般步驟 12
3.2.2 零件101710.CATPART幾何建模 12
3.2.3 零件112401.CATPART幾何建模 15
3.3 裝配車架 18
3.3.1 裝配設(shè)計方法和配合關(guān)系 18
3.3.2 子裝配體 20
3.3.3 裝配車架 21
3.4設(shè)計關(guān)系 27
4 車架裝配規(guī)劃總結(jié) 28
4.1 車架爆炸圖 28
4.2 剖切裝配 31
4.3 裝配規(guī)劃概述 35
4.3.1 產(chǎn)品層次樹結(jié)構(gòu)模型 35
4.3.2 裝配序列的生成和評價 35
4.3.3 裝配路徑 36
4.3.4 具體裝配規(guī)劃 36
4.4 車架裝配改進意見 37
5 總結(jié)與展望 38
5.1 總結(jié) 38
5.2 展望 39
致謝 40
參考文獻 41