【正文】 步確定 ...................................................................................11 變速器的外形尺寸 .................................................................................. 12 軸的直徑的初步確定 .............................................................................. 12 齒輪參數(shù)設(shè)計(jì) .......................................................................................... 13 各擋齒數(shù)的分配 ...................................................................................... 14 一檔斜齒輪齒數(shù)的確定 ............................................................... 14 二檔斜齒輪齒數(shù)的確定 ............................................................... 15 三檔齒輪齒 數(shù)的確定 ................................................................... 16 五檔齒輪齒數(shù)的確定 ................................................................... 17 確定倒檔傳動比 ........................................................................... 18 齒輪精度選擇 .......................................................................................... 19 齒輪螺旋方向 .......................................................................................... 19 齒輪變位系數(shù)的確定 .............................................................................. 19 第 4 章 變速器各擋齒輪的校核 ............................................................................ 22 齒輪彎曲應(yīng)力計(jì)算 .................................................................................. 22 一軸常嚙合齒輪 的彎曲 應(yīng)力 校核 ............................................... 23 中間軸常嚙合齒輪的彎曲應(yīng)力校核 ........................................... 23 二軸五檔齒輪的彎曲應(yīng)力校核 ................................................... 23 中間軸五檔齒輪的彎曲應(yīng) 力校核 ............................................... 24 二軸三檔齒輪的彎曲應(yīng)力校核 ................................................... 24 本科 生畢業(yè)設(shè)計(jì)（論文） IV 中間軸三檔齒輪的彎曲應(yīng)力校核 ............................................... 24 二軸二檔齒輪的彎曲應(yīng)力校核 ................................................... 25 中間軸二檔齒輪的彎曲應(yīng)力校核 ............................................... 25 二軸一檔齒輪的彎曲應(yīng)力校核 ................................................... 25 二軸一檔齒輪的彎曲應(yīng)力校核 ................................................. 25 二軸倒檔齒輪的彎曲應(yīng)力校核 ................................................. 26 中間軸倒檔齒輪的彎曲應(yīng)力校核 ............................................. 26 倒檔軸倒檔齒輪的彎曲應(yīng)力校核 ............................................. 26 齒輪接觸應(yīng)力計(jì)算 .................................................................................. 27 一軸常嚙合齒輪的接觸應(yīng)力校核 ............................................... 27 中間軸常嚙合齒輪的接觸應(yīng)力校核 ........................................... 28 二軸五檔齒輪的接觸應(yīng)力校核 ................................................... 28 中間軸五檔齒輪的接觸應(yīng)力校核 ............................................... 29 二軸三檔齒輪的接觸應(yīng)力校核 ................................................... 29 中間軸三檔齒輪的接觸應(yīng)力校核 ............................................... 30 二軸二檔齒輪的接觸應(yīng)力校核 ................................................... 30 中間軸二檔齒輪的接觸應(yīng)力校核 ............................................... 30 二軸一檔齒輪的接觸應(yīng)力校核 ................................................... 31 中間軸一檔齒輪的接觸應(yīng)力校核 ............................................. 31 二軸倒檔齒輪的接觸應(yīng)力校核 ................................................. 32 中間軸倒檔齒輪的接觸應(yīng)力校核 ............................................. 32 倒檔軸倒檔齒輪的接觸應(yīng)力校核 ............................................. 32 第 5 章 變速器軸的設(shè)計(jì)計(jì)算 ................................................................................ 34 軸的功用及設(shè)計(jì)要求 .............................................................................. 34 軸尺寸初選 .............................................................................................. 34 齒輪的受力分析 ...................................................................................... 35 軸的受力分析 .......................................................................................... 35 軸強(qiáng)度的計(jì)算和校核 .............................................................................. 36 第二軸上齒輪 3 處的應(yīng)力計(jì)算 ................................................... 37 第二軸上齒輪 5 處的應(yīng)力計(jì)算 ................................................... 38 第二軸上齒輪 7 處的應(yīng)力計(jì)算 ................................................... 38 第二軸上齒輪 9 處的應(yīng)力計(jì)算 ................................................... 39 第二軸上齒輪 11 處的應(yīng)力計(jì)算 ................................................. 39 中間軸上齒輪 2 處的應(yīng)力計(jì)算 ................................................... 40 本科 生畢業(yè)設(shè)計(jì)（論文） V 中間軸上齒輪 4 處的應(yīng)力計(jì)算 ................................................... 41 中間軸上齒輪 6 處的應(yīng)力計(jì)算 ................................................... 41 中間軸上齒輪 8 處的應(yīng)力計(jì)算 ................................................... 42 中間軸上齒輪 10 處的應(yīng)力計(jì)算 ............................................... 42 中間軸上齒輪 12 處的應(yīng)力計(jì)算 ............................................... 43 軸的剛度計(jì)算和校核 .............................................................................. 43 第二軸上齒輪 3 處剛度校核 ....................................................... 44 第二軸上齒輪 5 處剛度校核 ....................................................... 45 第二軸上齒輪 7 處剛度校核 ....................................................... 45 第二軸上齒輪 9 處剛度校核 ....................................................... 45 第二軸上齒輪 11 處剛度校核 ..................................................... 46 中間軸上齒輪 2 處剛度校核 ....................................................... 46 中間軸上齒輪 4 處剛度校核 ....................................................... 47 中間軸上齒輪 6 處剛度校核 ....................................................... 47 中間軸上齒輪 8 處剛度校核 ....................................................... 47 中間軸上齒輪 10 處剛度校核 ................................................... 48 中間軸上齒輪 12 處剛度校核 ................................................... 48 第 6 章 軸上花鍵的設(shè)計(jì)計(jì)算 .............................................................