【正文】 .............................................................................1第二章 機(jī)械加工工藝規(guī)程設(shè)計(jì) ..........................................................................................2 概述 .............................................................................................................................2 工藝規(guī)程的作用 ..................................................................................................2 工藝規(guī)程的設(shè)計(jì)原則 ..........................................................................................2 工藝規(guī)程設(shè)計(jì)所需原始材料 ..............................................................................2 工藝規(guī)程設(shè)計(jì)的步驟及內(nèi)容 ..............................................................................3 零件的分析 ..................................................................................................................3 生產(chǎn)類型的確定 ..................................................................................................4 零件的工藝分析 ..................................................................................................4 毛坯的選擇和設(shè)計(jì) ..............................................................................................6 工藝路線的擬定 .........................................................................................................6 定位基準(zhǔn)的選擇 ...................................................................................................6 表面加工方法和加 工方案的選擇 ......................................................................7 制定工藝路線 ......................................................................................................8 機(jī)械加工余量及工藝尺寸 ..........................................................................................9 加工余量及工序尺寸的確定 ..............................................................................9 確定切削用量 及工時(shí)定額 ................................................................................12第三章 專用夾具設(shè)計(jì) ......................................................................................................23 畢業(yè)設(shè)計(jì)（論文）報(bào)告紙 ii 概述 ...........................................................................................................................23 機(jī)床夾具的分類 ................................................................................................23 機(jī)床夾具的作用 ................................................................................................23 專用機(jī)床夾具的組成 ........................................................................................24 夾具設(shè)計(jì)的基本要求 ...............................................................................................24 專用夾具的設(shè)計(jì)方法和步驟 ...................................................................................24 銑床專用夾具設(shè)計(jì) ...................................................................................................25 銑床夾具的設(shè)計(jì)要點(diǎn) ........................................................................................25 定位方案 ............................................................................................................25 定位基準(zhǔn)的選擇 .................................................................................................26 定位誤差分析 ....................................................................................................26 切削力及夾緊力計(jì)算 ........................................................................................27 夾具與機(jī)床連接元件 ........................................................................................28 對(duì)刀塊 ................................................................................................................28 銑床夾具使用說(shuō)明 ............................................................................................28 鉆床專用夾具設(shè)計(jì) ...................................................................................................30 鉆床專用夾具設(shè)計(jì)要點(diǎn) ....................................................................................30 定位方案 ............................................................................................................31 定位誤差分析 ....................................................................................................31 鉆床專用夾具使用說(shuō)明 ....................................................................................31第四章 夾具輔助設(shè)計(jì) ......................................................................................................33 概述 ...........................................................................................................................33 最終傳動(dòng)箱蓋立體圖的繪制 ...................................................................................33 裝配爆炸圖 ...............................................................................................................33 創(chuàng)建默認(rèn)的爆炸圖 ............................................................................................33 編輯爆炸圖 ........................................................................................................33 二套夾具的爆炸圖 ............................................................................................34 裝配動(dòng)畫設(shè)計(jì) .........................................................................................................35 畢業(yè)設(shè)計(jì)（論文）報(bào)告紙 iii 簡(jiǎn)介 ....................................................................................................................35 制作裝配動(dòng)畫 ....................................................................................................35第五章 總結(jié)與展望 ............................................................................................................37參 考 文 獻(xiàn) ........................................................................................................................38致 謝 ............................................................................................................................39附 錄 ..............................................................................