普通C6140車床主軸變速箱設(shè)計【含CAD圖紙+文檔】,含CAD圖紙+文檔,普通,c6140,車床,主軸,變速箱,設(shè)計,cad,圖紙,文檔 目錄 摘要 ......................................................................III ABSTRACT ...................................................................IV 1 緒論 ......................................................................1 1.1 畢業(yè)設(shè)計的目的 .........................................................1 1.2 機(jī)床主傳動系統(tǒng)設(shè)計要求 .................................................1 2 車床參數(shù)的擬定 ............................................................2 2.1 車床主參數(shù)和基本參數(shù) ...................................................2 2.1.1 極限切削速度 Vmax、Vmin 的確定 ......................................2 2.1.2 主軸的極限轉(zhuǎn)速的確定 ...............................................2 2.1.3 主軸轉(zhuǎn)速級數(shù)和公比的確定 ...........................................3 2.1.4 主電機(jī)的選擇 .......................................................3 3 主傳動系統(tǒng)設(shè)計 ............................................................6 3.1 傳動結(jié)構(gòu)式、結(jié)構(gòu)網(wǎng)、轉(zhuǎn)速圖的確定 .......................................6 3.1.1 傳動形式的確定 .....................................................6 3.1.2 傳動組及各傳動組中傳動副的數(shù)目 .....................................6 3.1.3 傳動系統(tǒng)擴(kuò)大順序的安排 .............................................7 3.1.4 繪制轉(zhuǎn)速圖 .........................................................7 3.1.5 轉(zhuǎn)速圖的擬定 .......................................................7 3.1.6 分配降速比 .........................................................8 3.2 齒輪齒數(shù)的確定及傳動系統(tǒng)圖的繪制 ......................................10 3.2.1 帶輪確定 ..........................................................10 3.2.2 齒輪齒數(shù)的確定的要求 ..............................................14 4 強(qiáng)度計算和結(jié)構(gòu)草圖設(shè)計 ...................................................17 4.1 確定計算轉(zhuǎn)速 ..........................................................17 4.1.1 各軸、齒輪的計算轉(zhuǎn)速 ..............................................17 4.2 軸的估算和驗算 ........................................................19 4.2.1 主軸的設(shè)計與計算 ..................................................19 4.2.2 傳動軸直徑的估算 ..................................................22 4.3 齒輪模數(shù)的估算和計算 ..................................................24 4.3.1 齒輪模數(shù)的估算 ....................................................24 4.3.2 齒輪模數(shù)的驗算 ....................................................26 4.4 軸承的選擇與校核 ......................................................31 4.4.1 一般傳動軸上的軸承選擇 ............................................31 4.4.2 主軸軸承的類型 ....................................................31 4.4.3 軸承間隙調(diào)整和預(yù)緊 ...............................................33 4.4.4 軸承的較核 ........................................................34 4.4.5 軸承的密封和潤滑 ..................................................36 4.5 片式摩擦離合器的選擇與驗算 ............................................36 4.5.1 按扭矩選擇 ........................................................36 4.5.2 片式離合器的計算 ..................................................36 4.5.3 計算摩擦面的對數(shù) Z.................................................37 5 主軸箱的箱體設(shè)計 .........................................................39 6 結(jié)論與展望 ...............................................................40 6.1 結(jié)論 ..................................................................40 6.2 展望 ..................................................................40 致 謝 ......................................................................41 參考文獻(xiàn) ...................................................................42