XZ2550變速箱箱體工藝規(guī)程、數(shù)控編程與組合夾具設(shè)計(jì)

摘  要
在制造業(yè)信息化環(huán)境中，工藝設(shè)計(jì)是生產(chǎn)技術(shù)準(zhǔn)備工作的第一步，工藝規(guī)程是進(jìn)行工裝設(shè)計(jì)制造和決定零件加工方法與加工路線的主要依據(jù)，它對(duì)組織生產(chǎn)、保證產(chǎn)品質(zhì)量、提高勞動(dòng)生產(chǎn)率、降低成本、縮短生產(chǎn)周期及改善勞動(dòng)條件等都有直接的影響，是生產(chǎn)中的關(guān)鍵工作。工藝知識(shí)是制造企業(yè)中重要的知識(shí)資源之一，是使產(chǎn)品設(shè)計(jì)變?yōu)槌善返恼麄€(gè)制造過程中的基礎(chǔ)資源，它對(duì)保證產(chǎn)品質(zhì)量以及提高企業(yè)經(jīng)濟(jì)技術(shù)效益具有十分重要的作用。
夾具的快速設(shè)計(jì)與制造，己經(jīng)成為產(chǎn)品快速變換和制造系統(tǒng)新建成或重構(gòu)后運(yùn)行的瓶頸，嚴(yán)重地影響制造系統(tǒng)的設(shè)計(jì)建造周期、系統(tǒng)生產(chǎn)率、質(zhì)量和成本。目前國(guó)內(nèi)外使用的組合夾具是伴隨著大批大量生產(chǎn)的發(fā)展而發(fā)展出現(xiàn)的，特別是和汽車工業(yè)的發(fā)展密切相關(guān)。組合夾具的使用，縮短了工序時(shí)間，降低了加工成本。因此，在何種生產(chǎn)條件下使用哪種類型的夾具才是經(jīng)濟(jì)合理的，也就是夾具的經(jīng)濟(jì)性，一直都是夾具結(jié)構(gòu)發(fā)展和設(shè)計(jì)的一個(gè)主要問題。
這次我畢業(yè)設(shè)計(jì)的課題就是制造業(yè)中 XZ25.50 的箱體加工工藝及加工中心、組合夾具設(shè)計(jì)和數(shù)控編程。
關(guān)鍵字  工藝；加工中心；組合夾具；數(shù)控編程

Abstract
The manufacturing industry becoming an information based society environment, the process planning produces is the first step in the technology preparatory work, the process planning is carries on the work clothes design to make and to decide the components processing method with processes the route the main basis, it produces, guarantee product quality, the enhancement labor productivity to the organization, reduces the cost, reduces the production cycle and the improvement work condition and so on all has the direct influence, is in the production key work. The craft knowledge is makes in the enterprise one of important knowledge resources, is causes the product design to become the end product in the entire manufacture process foundation resources, it to guaranteed the product quality as well as enhances the enterprise economical technology benefit to have the extremely vital role.
The fast design and the manufacture, oneself after becomes the product fast transformation and the manufacture system completes the bottleneck newly which or the heavy construction moves, seriously affects manufacture system the design construction cycle, the system
productivity, the quality and the cost. At present the domestic and foreign uses modular fixture follows large quantities of mass productions development but to develop appears, specially with automobile industry development close correlation. Modular fixture use, reduced the working procedure time, reduced the processing cost. Therefore, which kind of type uses under what kind of working condition the jig is the economy reasonable, also is the jig efficiency, continuously all is the jig structure development and a design main question.
Topic of this study is in the manufacturing industry XZ25.50 box body processing craft and machining centers and the modular fixture design，and then the NC programming.
Key words  process planning  machining center  modular fixture  NC programming

 
目       錄
序 言 
1 工藝分析 2
1.1 零件的分析 2
1.1.1 零件的功用 2
1.1.2 零件的工藝分析及技術(shù)要求 2
1.2 零件的工藝規(guī)程設(shè)計(jì) 5
1.2.1 確定零件的生產(chǎn)類型 5
1.2.2 確定零件的毛胚制造形式 5
1.2.3 定位基準(zhǔn)的選擇 5
1.2.4 擬訂工藝路線 5
1.2.5 毛坯余量與工序余量的確定 6
1.2.6 確定主要表面的切削刀量及基本工時(shí) 7
2 數(shù)控編程 25
2.1 程序的編制 25
2.1.1 銑右端面 25
2.1.2 銑左端面 26
2.1.3 銑前端面 27
2.1.4 銑削后端面 28
2.1.5 鏜有端面的兩孔 29
2.1.6 鏜左端面的兩孔 30
2.1.7 鉆左平面上的個(gè)螺紋孔，通孔并攻絲 31
2.1.8 鉆右平面上的螺紋孔，通孔及攻絲 32
2.1.9 鉆前端面各螺紋孔及攻絲 34
2.1.10 鉆后端面上的各螺紋孔及攻絲 35
2.2 數(shù)控加工刀具卡 38
3 組合夾具 39
3.1 組合夾具及其應(yīng)用特點(diǎn) 39
3.2 夾具設(shè)計(jì) 40
3.2.2 基準(zhǔn)的概念 41
3.3 工件的夾緊 41
3.3.1 夾緊的概念 41
3.3.2 夾緊力的大小 42
3.3.3 切削力的計(jì)算 43
3.4 夾緊裝置產(chǎn)生的夾緊力 44
3.4.1 螺旋直接夾緊裝置 44
3.4.2 螺旋杠桿夾緊裝置 44
3.5 定位元件的要求 45
3.5.1 定位元件 45
3.6 誤差計(jì)算 45
3.6.1 一面兩銷 45
結(jié) 論 49
致 謝 50
參考文獻(xiàn) 51
附錄 52
英文原文 52
中文譯文 60