【正文】 .............. 7 第二章. 工藝規(guī)程的制定及重要工序分析 ........................................................................................ 8 編制工藝規(guī)程的原則方法 ............................................................................................................ 8 原則 ........................................................................................................................................... 8 方法 ........................................................................................................................................... 8 定位基準的選擇 ................................................................................................................................. 8 粗基準的選擇 ............................................................................................................................ 8 精基準的選擇 ............................................................................................................................ 9 加工方法 ........................................................................................................................................... 10 加工階段的劃分 ........................................................................................................................... 10 加工順序的安排 ............................................................................................................................... 10 熱處理工序的安排 ........................................................................................................................ 10 工藝路線的制定 ............................................................................................................................... 11 重要工序的檢驗與分析 .............................................................................................................. 13 確定機械零件加工總余量 ................................................................................................ 13 2． 毛坯尺寸 ............................................................................................................................. 14 2． 重要工序的檢驗 ............................................................................................................... 14 2． 所選工序切削用量和基本工時的計算與分析 ..................................................... 14 ............................................................................................................................................. 18 被加工零件工序圖的作用及要求 ............................................................................................. 18 作用 ............................................................................................................................................. 18 要求 ............................................................................................................................................. 19 注意事項 ................................................................................................................................... 19 被加工零件圖工序圖的內(nèi)容 ....................................................................................................... 19 第七章 雙面臥式組合鏜床專用夾具的設(shè)計 ................................................................................... 21 組合機床夾具概述 .......................................................................................................................... 21 組合機床夾具組成和分類 ................................................................................................ 22 夾具的功能 ............................................................................................................................. 22 機床夾具應(yīng)該滿足的要求 ................................................................................................ 22 組合機床夾具的特點： ...................................................................................................... 23 設(shè)計夾具時應(yīng)注意的問題和要求 ................................................................................ 23 組合機床夾具定位機構(gòu)的設(shè)計 ................................................................................................... 24 夾具的定位 ........................................................................................................................... 24 工件的選用的定位規(guī)律 ..................................................................................................... 24 定位誤差的分析和計算 ................................................................................................................. 26 組合機床夾具夾緊機構(gòu)的設(shè)計 ................................................................................................... 27 對夾壓機構(gòu)的一些基本要求 ............................................................................................. 27 組合機床夾緊機構(gòu)的設(shè)計方案 ........................................................................................ 27 夾緊機構(gòu)夾緊作用力的計算 ............................................................................................. 28 夾具體的設(shè)計 .................................................................................................................................... 31 繪制夾具總裝圖、編寫明細表 .................................................................................................. 32 繪制夾具零件圖 ............................................................................................................................... 32 中文摘要摘要：本次畢業(yè)設(shè)計的題目是 40 型減速箱箱體加工工藝和雙面組合鏜床及其夾具設(shè)計。首先，對零件進行分析，簡要分析變速箱的作用及其工藝情況。針對被加工孔的特點，制訂加工工序圖、加工示意圖及其雙面組合鏜床的總體設(shè)計，其中包括動力部件和其他通用部件的選用。我采用的是用六塊支承板作為工件的支承，定位機構(gòu)采用可升降的托輥機構(gòu)來代替伸縮式定位銷，簡化了設(shè)計伸縮式定位銷的工作量，縮減了設(shè)計時間。關(guān)鍵詞：減速箱箱體；加工工藝；組合機床；夾具English summaryAbstracts: This graduation design is the subject of 40Gearbox processing and doubleboring machine and its portfolio fixture design. First, the parts analysis, a brief analysis of the role and transmission of the process. Processing through the formulation of the right rough manufacture, processing benchmark choice, understan