摘要

　　計(jì)算機(jī)輔助夾具設(shè)計(jì)(CAFD)作為CIMS集成中的一個(gè)重要環(huán)節(jié)，克服傳統(tǒng)夾具設(shè)計(jì)存在的設(shè)計(jì)周期長(zhǎng)，設(shè)計(jì)效率低等問(wèn)題，降低了設(shè)計(jì)人員的勞動(dòng)強(qiáng)度，提高了夾具設(shè)計(jì)的質(zhì)量，從而能夠大幅度縮短產(chǎn)品開(kāi)發(fā)周期，提高企業(yè)的市場(chǎng)競(jìng)爭(zhēng)力。
　　論文在回顧了夾具的概念、發(fā)展、組成以及國(guó)內(nèi)外應(yīng)用現(xiàn)狀后，詳細(xì)介紹了夾具的總體設(shè)計(jì)和各組成部分的設(shè)計(jì)，并著重闡述了設(shè)計(jì)研究過(guò)程中的各項(xiàng)所需的關(guān)鍵技術(shù)在對(duì)國(guó)內(nèi)外眾多夾具設(shè)計(jì)系統(tǒng)進(jìn)行仔細(xì)的分析研究之后，本課題確定以專(zhuān)用夾具為對(duì)象，以銑床夾具為主要開(kāi)發(fā)內(nèi)容，設(shè)計(jì)一種適合國(guó)內(nèi)企業(yè)現(xiàn)狀的具有先進(jìn)性和實(shí)用性的銑床夾具。
本文首先介紹了夾具的研究背景和發(fā)展趨勢(shì)、課題的作用和意義、夾具的組成以及銑床夾具的結(jié)構(gòu)特點(diǎn)，通過(guò)對(duì)參考文獻(xiàn)進(jìn)詳細(xì)的分析，闡述了定位方案的選擇、夾緊方案的確定、對(duì)刀方案的選擇、夾具體與定位鍵、夾具總圖上的尺寸、公差和技術(shù)要求以及加工精度分析。
　　運(yùn)用了大量的軟件對(duì)夾具進(jìn)行輔助設(shè)計(jì)，基于Autocad強(qiáng)大的二維繪圖能力，對(duì)夾具進(jìn)行完整的三視圖繪制，著名的3D CAD/CAM系統(tǒng)Pro/E由于具有參數(shù)化設(shè)計(jì)特性，在全世界范圍內(nèi)受到廣泛應(yīng)用。在Pro/E環(huán)境下對(duì)所設(shè)計(jì)的銑床夾具進(jìn)行了三維仿真的實(shí)體造型和虛擬裝配


關(guān)鍵詞：三維造型設(shè)計(jì);Pro/e模塊;AUTOCAD；計(jì)算機(jī)輔助夾具設(shè)計(jì)(CAFD)












Abstract

Computer-aided design fixture (CAFD) CIMS integration as an important part of traditional fixture designed to overcome the long cycle design, design problems and low efficiency, reducing the design strength of the labor and improve the quality of the fixture design, which can be large Reduce the rate of product development cycle, improve their market competitiveness.
After reviewing the papers fixture of the concept, development, composition and application status at home and abroad, the details of the fixture and the overall design of the components of the design, and focused on the design of the course of the study of all the necessary key technologies In many fixture at home and abroad to design systems after careful analysis of this issue dedicated to identify targets for the fixture to fixture as the main development milling machine, a design suitable for the status of domestic enterprises with an advanced nature and relevance of the milling machine fixture.
This paper introduced the first fixture on the background and development trends, issues of the role and significance of the fixture and milling machine fixture of the structural characteristics, through the references into a detailed analysis on the orientation programme of choice, for sure clamping , The choice of knives, folders with specific targeted key fixture on the map of the size, tolerance and technical requirements analysis and processing precision.
Use a lot of software for the fixture-aided design, based on Autocad powerful 2D graphics capabilities, a fixture on the integrity of the three view drawing, the famous 3 D CAD / CAM systems Pro / E because of the design parameters of the Characteristic, in the world With wide application. In the Pro / E environment for the design of a milling machine fixture 3D solid modeling and simulation of virtual assembly.

Key words: three-dimensional design; Pro / e module; AUTOCAD; computer-aided fixture design (CAFD)





目 錄

中文摘要 Ⅰ
ABSTRACT Ⅱ
1緒論 1
1.1 分析題目 1
1.1.1課題選題背景 1
1.1.2 課題選題目的 1
1.1.3 課題研究方法 1
1.1.4 課題的意義和類(lèi)容 1
1.2 Pro/e軟件模塊簡(jiǎn)介 2
1.2.1 Pro/e概述 2
1.2.2Pro/e模塊 3
1.3 夾具概述 5
1.3.1機(jī)床夾具的主要功能 5
1.3.2機(jī)床夾具的分類(lèi) 5
1.3.3機(jī)床夾具的組成 6
1.3.4 六點(diǎn)定位原理 6
1.3.5銑床夾具的特點(diǎn) 7
1.4國(guó)內(nèi)外計(jì)算機(jī)輔助夾具設(shè)計(jì)發(fā)展現(xiàn)狀 8
2 設(shè)計(jì)課題的分析計(jì)算及平面圖的 10
2.1 零件的工藝設(shè)計(jì) 10
2.1.1零件圖的繪制 10
2.1.2確定毛坯的制造形式 10
2.1.3基準(zhǔn)的選擇 10
2.1.4制訂工藝路線 10
2.1.5機(jī)械加工余量、工序尺寸及毛坯尺寸的確定 11
2.1.6確定切削用量及基本工時(shí) 12
2.2 銑槽夾具設(shè)計(jì) 14
2.1.1 夾具設(shè)計(jì)的要求及規(guī)范化程序 14
2.1.2 零件的工藝分析 18
2.1.3 確定定位方案 19

2.1.4 確定定位元件 19
2.1.5 確定定位元件尺寸 20
2.1.6 定位誤差的分析與計(jì)算 20
2.1.7 夾緊裝置設(shè)計(jì) 21
2.1.8 對(duì)刀方案 22
2.1.9 夾具體及定位鍵的設(shè)計(jì) 22
2.1.10 夾具體及其在機(jī)床上的安裝 23
2.1.11 夾具總圖上的尺寸、公差和技術(shù)要求 23
2.1.12 加工精度分析 24
3 銑床夾具三維造型設(shè)計(jì)分析 26
3.1 三維模型的創(chuàng)建 26
3.1.1 三維設(shè)計(jì)概述 26
3.1.2特征化造型的概念 26
3.1.3 Pro/e建模的一般過(guò)程 27
3.1.4利用族表實(shí)現(xiàn)零件系列化設(shè)計(jì) 27
3.2 產(chǎn)品的組裝 27
3.3 運(yùn)動(dòng)仿真與分析 28
3.4 Pro/e裝配體三維實(shí)體造型 28
3.5 夾具總體三維造型設(shè)計(jì) 29
3.5.1 夾具尺寸信息 29
3.5.2 繪制夾具零件的三維圖形 29
3.5.3 夾具總體的虛擬裝配 31
4 論文總結(jié) 34
5 謝辭 35
參考文獻(xiàn) 36