【正文】 ission device transmits for actuates the wheel, is in the automobile power transmission reduces the rota tional speed, to increase the torque the major ponent. May cause in front of the main gear box the transmission part, like the gear box, the transfer case, transmission and so on rotary transmission device torques reduce, simultaneously also reduced gear box39。s major parts, the nonseparation type driving axle shell is playing the supporting automobile load capacity role, and passes to the load the wheel. Therefore, the bridge shell is not only the load bearing is also a power transmission. Simultaneously it is also the main gear box, the differential device and the actuation wheel transmission device outer covering. What present paper research is the reduction gear shell39。 Technological process design。 Examination 沈陽航空工業(yè)學(xué)院畢業(yè)設(shè)計(jì)（論文） III 目 錄 1 .緒論 ................................................................................................................................... 1 減速器作用及原理 ..................................................................................................... 1 減速器外殼說明 ......................................................................................................... 1 減速器殼分類 ............................................................................................................. 2 設(shè)計(jì)題目 ..................................................................................................................... 2 設(shè)計(jì)內(nèi)容 ..................................................................................................................... 2 設(shè)計(jì)原始資料 ............................................................................................................. 2 生產(chǎn)類型的確定 ......................................................................................................... 3 生產(chǎn)節(jié)拍 ..................................................................................................................... 3 2 零件的分析 ....................................................................................................................... 5 零件的作用 ................................................................................................................. 5 零件的工藝分析 ......................................................................................................... 5 表面加工方法分析 .............................................................................................. 5 表面加工方法的確定 .......................................................................................... 6 表面位置精度分析 .............................................................................................. 8 確定加工形式 ...................................................................................................... 8 3 工藝規(guī)程的設(shè)計(jì) ............................................................................................................. 10 確定毛坯材料及毛坯的制造形式 ........................................................................... 10 基準(zhǔn)的選擇 ............................................................................................................... 10 粗基準(zhǔn)的選擇 .................................................................................................... 10 精基準(zhǔn)的選擇 .................................................................................................... 12 擬訂工藝路線 ........................................................................................................... 13 刀具的選擇 ............................................................................................................... 15 機(jī)械加工余量、工序尺寸及毛坯尺寸的確定 ....................................................... 15 確定切削用量及基本工時(shí) ....................................................................................... 19 4 夾具設(shè)計(jì) ......................................................................................................................... 41 夾具設(shè)計(jì)通用原則 ................................................................................................... 41 沈陽航空工業(yè)學(xué)院畢業(yè)設(shè)計(jì)（論文） IV 定位元件要求 .......................................................................................................... 41 夾緊力要求 .............................................................................................................. 42 夾緊裝置要求 .......................................................................................................... 42 車止口車夾具設(shè)計(jì) .................................................................................................. 42 定位基準(zhǔn)的選擇 ................................................................................................ 42 確定夾具的定位方式 ........................................................................................ 43 夾緊機(jī)構(gòu) ............................................................................................................ 43 夾緊力分析 ........................................................................................................ 43 切削力計(jì)算 ........................................................................................................ 43 夾具的動(dòng)作原理及動(dòng)作說明 ............................................................................ 44 精鏜軸承孔夾具設(shè)計(jì) .............................................................................................. 45 定位基準(zhǔn)的選擇 ................................................................................................ 45 確定夾具的定位方式 ........................................................................................ 45 夾緊機(jī)構(gòu) ............................................................................................................ 46 夾緊力分析 ........................................................................................................ 46 鏜削力計(jì)算 ........................................................................................................ 48 強(qiáng)度校核 ....................................................................................................