【正文】 .................17 繪制變速系統(tǒng)圖 .........................................................................................18 ...................................................................................................................19 結構設計的內容、技術要求和方案 ................................................................19 展開圖及其布置 ................................................................................................19 I 軸（輸入軸）的設計 ......................................................................................20 齒輪塊設計 ........................................................................................................20 傳動軸的設計 ....................................................................................................21 主軸組件設計 ....................................................................................................22 各部分尺寸的選擇 .....................................................................................22 主軸材料和熱處理 .....................................................................................23 主軸軸承 .....................................................................................................23 主軸與齒輪的連接 .....................................................................................24 潤滑與密封 ...............................................................................................25 其他問題 .....................................................................................................25 ...........................................................................................................25 帶輪的設計 ........................................................................................................25普通車床主軸箱設計第 5 頁 共 69 頁 傳動軸的直徑估算 ............................................................................................28 確定各軸轉速 .............................................................................................28 傳動軸直徑的估算：確定各軸最小直徑 ..................................................29 鍵的選擇 .....................................................................................................30 傳動軸的校核 ....................................................................................................30 傳動軸的校核 .............................................................................................31 鍵的校核 .....................................................................................................31 各變速組齒輪模數(shù)的確定和校核 ...................................................................32 齒輪模數(shù)的確定： .....................................................................................32 齒寬的確定 .................................................................................................36 齒輪結構的設計， .....................................................................................37 帶輪結構設計 ....................................................................................................38 片式摩擦離合器的選擇和計算 ........................................................................39 齒輪校驗 ............................................................................................................41齒輪強度校核 ..........................................................................................................41 校核 a 變速組齒輪 .....................................................................................42 校核 b 變速組齒輪 .....................................................................................43 校核 c 變速組齒輪 .....................................................................................44 軸承的選用與校核 ............................................................................................46 各軸軸承的選用 .........................................................................................46 各軸軸承的校核 .......................................................................................46 ...........................................................................................................47 主軸的基本尺寸確定 ........................................................................................48 外徑尺寸 D.................................................................................................48 主軸孔徑 d..................................................................................................48 主軸懸伸量 a ..............................................................................................49 支撐跨距 L .................................................................................................50 主軸最佳跨距 的確定 ............................................................................510 主軸剛度驗算 ................................................................................................53 主軸前支撐轉角的驗算； .........................................................................53 主軸前端位移的驗算； .............................................................................55 ...............................................................................................................58 本文工作總結 ....................................................................................................58 課題展望 ............................................................................................................59參考文獻 ......................................................................................................................60致 謝 ..........................................................................................................................61附錄 ..............................................................................................................................62普通車床主軸箱設計第 6 頁 共 69 頁普通車床主軸箱設計機械與電氣工程學院 機械設計制造及其自動化專業(yè)05 機械 4 班 夏遵超 指導老師 魏常武緒論機床技術參數(shù)有主參數(shù)和基本參數(shù)，他們是運動傳動和結構設計的依據(jù)，影響到機床是否滿足所需要的基本功能要求，參數(shù)擬定就是機床性能設計。Draft structure type or structure , draft to turn soon diagram。最后，完成運動設計和動力設計后，要將主傳動方案“結構化” ，設計主軸變速箱裝配圖及零件圖，側重進行傳動軸組件、主軸組件、變速機