【正文】 I 摘 要 本次畢業(yè)設(shè)計(jì)的主要內(nèi)容是機(jī)械加工工藝規(guī)程編制和工序?qū)Ｓ脢A具的設(shè)計(jì)。 設(shè)計(jì)內(nèi)容涉及了機(jī)械制造工藝及機(jī)床夾具設(shè)計(jì)、金屬切削機(jī)床和刀具的選用、公差配合與測(cè)量等多方面的知識(shí)。 為了能夠完成銑床撥 叉殼體機(jī)械加工工藝及鉆床夾具的設(shè)計(jì)任務(wù)，綜合運(yùn)用機(jī)械制造工藝學(xué) 和其它課程的基本理論和方法，正確的制訂銑床撥叉殼體的機(jī)械加工工藝規(guī)程。 通過(guò)對(duì)立式升降臺(tái)銑床撥叉殼體兩種加工工藝路線的比較分析，確定了設(shè)計(jì)方案。該方案是以三個(gè)面作為基準(zhǔn)，實(shí)現(xiàn)基準(zhǔn)統(tǒng)一原則，在保證所要求的質(zhì)量和勞動(dòng)生產(chǎn)率的前提下降低了生產(chǎn)成本。本夾具為鉆床使用 的專用夾具，其特點(diǎn)是結(jié)構(gòu)緊湊、操作簡(jiǎn)單 及 生產(chǎn)率高，滿足機(jī)床夾具總體方案設(shè)計(jì)的基本要求，具有良好的結(jié)構(gòu)工藝性。 關(guān)鍵詞： 撥叉殼體；加工工藝；專用夾具 II Abstract The graduation design is the main content of the machining process planning preparation and special fixture design process. Design content involves the mechanical manufacturing technology and machine tool clamp design, metal cutting machine tools and tool selection, tolerance matching and measure the and so on various knowledge. In order to be able to plete the milling machine fork shell machining technology and drilling fixture design task, the integrated use of mechanical manufacturing technology and other basic curriculum of basic theory and method, the formulation of the milling machine right fork to shell the machining process planning. Through to the vertical lift milling machine fork shell two kinds of processing technology of the route to pare and analyze the, determined the positioning scheme. The scheme is based on three face as a benchmark, realize the benchmark principle, ensure the required quality and the labor productivity under the prerequisite of the lower production costs. This fixture for drilling machine use special jig, its characteristic is pact structure, simple operation and high productivity, meet machine tool fixtures overall design of the basic requirements and have good technology structure. Key words: Extract fork shell； Processing technology； Special fixture III 目 錄 摘 要 ........................................................................................................... ............Ⅰ Abstract .................................................................................................................... Ⅱ 第 1 章 緒論 ............................................................................................................. 1 殼體類零件 綜述 ......................................................................................... 1 殼體類零件 國(guó)內(nèi)外發(fā)展概況 ..................................................................... 1 殼體類零件 國(guó)內(nèi)發(fā)展概況 ............................................................... 1 殼體類零件 夾具國(guó)外發(fā)展概況 ....................................................... 2 第 2 章 零件的工藝規(guī)程設(shè)計(jì) ................................................................................. 4 銑床撥叉殼 體的工藝分析 ......................................................................... 4 撥叉殼 體的作用 ............................................................................... 4 撥叉殼體 的工藝分析 ....................................................................... 4 材料及毛坯種類的選用 ............................................................................. 5 機(jī)械加工工藝路線制訂 ............................................................................. 6 選擇定位基準(zhǔn) ................................................................................... 6 制訂工藝路線 ................................................................................... 8 選擇加工設(shè)備與工藝裝備 ............................................................. 13 確定機(jī)械加工余量、工序尺寸及公差 ......................................... 13 確定切削用量及基本時(shí)間 ............................................................. 16 第 3 章 機(jī)床專用夾具的設(shè)計(jì) ............................................................................. 41 確定設(shè)計(jì)任務(wù)、明確加工要 求 ............................................................... 41 確定定位方案 ........................................................................................... 41 夾緊機(jī)構(gòu)的設(shè)計(jì) ....................................................................................... 41 計(jì)算切削力和夾緊力 ............................................................................... 41 定位誤差的 計(jì)算 ................................................................................................... 42 夾具體的設(shè)計(jì) ........................................................................................... 43 夾具與機(jī)床連接元件的選擇 ................................................................... 44 夾具的使用說(shuō)明 ....................................................................................... 44 夾具的結(jié)構(gòu)特點(diǎn) ....................................................................................... 44 IV 結(jié) 論 ....................................................................................................................... 45 致 謝 ....................................................................................................................... 46 參考文獻(xiàn) ................................................................................................................... 47 V CONTENTS Abstract .................................................................................................................... Ⅱ Chapter 1 Introduction .......................................................................................... 1 Shell parts review ........................................................................................ 1 Shell parts box domestic and international development overview ............ 1 Shell parts unit housing process for development overview ............. 1 Shell parts unit housing fixture Development Abroad ...................... 2 Chapter 2 Part of the process planning ................................................................ 4 Milling shell parts unit housing process analysis ........................................ 4 Shell parts unit housing role .............................................................