【正文】 檔分析 ............................................................................................. 9 換擋機構(gòu)形式 ................................................................................................................ 9 本章小結(jié) ...................................................................................................................... 10 第 3 章 變速器主要參數(shù)設(shè)計 ..................................................................................... 12 擋數(shù)的選擇和確定 ..................................................................................................... 12 各檔傳動比的確定 ..................................................................................................... 12 主減速器傳動比 ................................................................................................... 12 最低檔傳動比計算 ............................................................................................... 13 各檔傳動比 .......................................................................................................... 14 初選中心距 ........................................................................................................... 14 變速器的外形尺寸 ............................................................................................... 15 齒輪參數(shù)計算 ............................................................................................................. 15 模數(shù)的選取 .......................................................................................................... 15 齒形、 壓力角 及螺旋角的確定 .......................................................................... 15 各擋齒輪齒數(shù)的分配 ................................................................................................. 17 確定一擋齒輪的齒數(shù) .......................................................................................... 17 對中心距進行修正 .............................................................................................. 18 確定常嚙合傳動齒輪副齒數(shù)及變位系數(shù) ........................................................ 18 確定其他各擋的齒數(shù)及變位系數(shù) ...................................................................... 18 確定倒擋齒輪齒數(shù)及變位系數(shù) .......................................................................... 20 本章小結(jié) ..................................................................................................................... 21 第 4 章 變速器的校核 ................................................................................................... 22 齒輪的損壞形式 ......................................................................................................... 22 齒輪強度計算 ............................................................................................................ 22 輪齒的彎曲應(yīng)力 ................................................................................................... 23 輪齒的接觸應(yīng)力 ................................................................................................... 24 各檔齒輪的強度校核 ........................................................................................... 25 軸的結(jié)構(gòu)尺寸設(shè)計 ..................................................................................................... 32 軸的強度驗算 ............................................................................................................. 33 軸的剛度的計算 .................................................................................................. 33 軸的強度的計算 .................................................................................................. 37 軸承壽命計算 .............................................................................................................. 40 本章小結(jié) ..................................................................................................................... 43 第 5 章 同步器的選擇 ................................................................................................... 44 鎖銷式同步器 .............................................................................................................. 44 鎖環(huán)式同步器 .............................................................................................................. 45 本章小結(jié) ...................................................................................................................... 46 第 6 章 變速器操縱機構(gòu)的選擇 ................................................................ 47 直接操縱手動換擋變速器 ......................................................................................... 47 變速操縱桿的布置 .............................................................................................. 47 換檔鎖裝置 ........................................................................................................... 47 本章小結(jié) ..................................................................................................................... 49 結(jié) 論 ................................................................................................... 50 參考文獻 ................................................................................................... 51 致 謝 ................................................................................................... 52 附 錄 ................................................................................................... 53 1 第 1 章 緒 論 選題的背景 21 世紀，汽車工業(yè)成為各國經(jīng)濟發(fā)展 的支柱產(chǎn)業(yè)之一，汽車企業(yè)對各系統(tǒng)部件的設(shè)計需求旺盛。 Gear。 全套圖紙，加 153893706 關(guān)鍵字： 變速器 ； 設(shè)計 ；齒 輪 ；軸；校核 II ABSTRACT This design of a threeaxis fivespeed manual transmission. First, the working principle of transmission are described in detail, from the transmission to reverse layout programs are all doing a detailed description, plete the form and bearing of shift the choice of institutions and so on, is particularly worth mentioning is the reverse of the on the selection and arrangement. Because the role of transmission in lowgrade work, a greater force, it is generally lowgrad