【正文】 ign and process technology to be piled , and the question of how we can achieve the best surface quality and economic benefits. Tooling design, the machine described the special fixture design principles and methodologies. To axis milling keyway, design a Vshaped block used for positioning the handle screw nut agencies clamping fixture binations. By bining special fixture to solve the keyway milling spindle positioning and clamping issue. This increased machining efficiency and reduce the labor intensity, shorten production time and increased efficiency. Key word： Craft route Craft establishment Preparation Milling keyway Fixture 陜西理工學(xué)院畢業(yè)設(shè)計(jì)論文 3 目 錄 引言 ........................................................................................................................................... 1 1. 零件分析 .......................................................................................................................... 2 零件作用 ..................................................................................................................... 2 零件技術(shù)要求 ............................................................................................................. 2 ........................................................................................................................ 3 毛坯制造方法考慮因素： ......................................................................................... 3 主軸毛坯的選擇及制造方法 ..................................................................................... 3 毛坯的熱處理 ............................................................................................................. 4 ................................................................................................................... 5 定位基準(zhǔn)的選擇 ......................................................................................................... 5 表面加工方法的選擇 ................................................................................................. 6 選擇表面加工方法時(shí)應(yīng)考慮的因素 ................................................................ 6 加工階段的劃分 ......................................................................................................... 7 加工階段的劃分 .............................................................................................. 8 劃分加工階段的目的 ...................................................................................... 9 .................................................................................................. 10 工序集中的特點(diǎn) ............................................................................................ 10 工序分散的特點(diǎn) ............................................................................................ 10 加工順序的安排和工序的確 定 ............................................................................. 10 機(jī)械加工工序 ................................................................................................ 10 主要工序的加工方法 .................................................................................... 12 熱處理工序 .................................................................................................... 12 輔助工序 ........................................................................................................ 13 主軸加工工藝過(guò)程分析 ........................................................................................... 15 主軸毛坯的選擇及制造方法 ........................................................................ 15 毛坯的熱處理 ................................................................................................ 16 定位基準(zhǔn)的選擇 ............................................................................................ 16 4. 工序內(nèi)容的擬定 .......................................................................................................... 17 機(jī)床與工藝裝備的選用 .......................................................................................... 18 機(jī)床的選擇 .................................................................................................... 18 陜西理工學(xué)院畢業(yè)設(shè)計(jì)論文 4 工藝裝備的選擇 ............................................................................................ 19 加工余量和工序尺寸的確定 ................................................................................... 20 加工余量的確定 ............................................................................................ 20 工序尺寸及其公差的確定 ............................................................................. 21 切削用量的選擇 ....................................................................................................... 34 切削用量的選擇原則 .................................................................................... 34 時(shí)間定額的制定 ............................................................................................ 35 工藝過(guò)程的技術(shù)經(jīng)濟(jì)分析 ....................................................................................... 43 提高勞動(dòng)生產(chǎn)率的途徑 ................................................................................ 43 工藝成本及其組成 ........................................................................................ 44 ................................................................................................................. 44 機(jī)床夾具的功用 ....................................................................................................... 45 機(jī)床夾具的分類 ....................................................................................................... 45 機(jī)床夾具的組成 ....................................................................................................... 45 工件在夾具中的定位及定位誤差 ........................................................................... 46 定位方案的設(shè)計(jì) ............................................................................................ 46 定位誤差分析 ...................................................................