【正文】 ne design, mechanism and so on, we can calculate the parameter of each gear and the axis and examine its intensity, prove the paper’s rationality, finally must draw the part drawing of an gear and an axis. Key words: Transmission； Transmission Ratio； Gear ； Shaft； Calculation； Check 目 錄 摘要 ................................................................................................................................I Abstract.........................................................................................................................II 第 1章 緒論 .................................................................................................................1 汽車(chē)變速器的概述 ...........................................................................................1 汽車(chē)變速器研究現(xiàn)狀、發(fā)展趨勢(shì) ...................................................................1 國(guó)外研究現(xiàn)狀 ........................................................................................1 國(guó)內(nèi)研究現(xiàn)狀 ........................................................................................4 汽車(chē)變速器設(shè)計(jì)的目的和意義 .......................................................................5 汽車(chē)變速器的設(shè)計(jì)方法和研究?jī)?nèi)容 ...............................................................5 第 2章 變速器主要參數(shù)的選擇 ............................................................................7 變速器檔數(shù) 及各檔傳動(dòng)比 ...............................................................................7 變速器檔數(shù) 的確定 ................................................................................7 主要技術(shù)參數(shù) ........................................................................................7 主減速比的確定 ....................................................................................7 變速器一 檔傳動(dòng)比的確定 ....................................................................8 變速器各檔傳動(dòng)比的確定 ..................................................................10 變速器中心距的確定 .....................................................................................10 變速器 各檔 齒輪參數(shù)的確定 .........................................................................11 確定一檔 齒輪齒數(shù) ..............................................................................11 對(duì)中心距 A進(jìn)行修正 ..........................................................................12 確定常嚙合傳動(dòng)齒輪 的齒數(shù) ...............................................................13 確定其他各檔的齒數(shù) ..........................................................................15 確定倒檔齒輪齒數(shù) ..............................................................................20 本章小結(jié) .........................................................................................................21 第 3章 變速器齒輪的設(shè)計(jì)及校核 .....................................................................22 齒輪的材料選擇 .............................................................................................22 齒輪 損壞 形式及避免 方法 ..................................................................22 各檔 齒輪的材料選擇 ..........................................................................23 計(jì)算各軸的轉(zhuǎn)矩 .............................................................................................24 齒輪的強(qiáng)度計(jì)算 .............................................................................................24 輪齒的彎曲應(yīng)力 公式 ..........................................................................25 輪齒接觸應(yīng)力 公式 ..............................................................................26 各檔齒輪的強(qiáng)度計(jì)算 及 校核 ..............................................................28 各檔齒輪的受力 計(jì)算 .....................................................................................35 本章小結(jié) .........................................................................................................38 第 4章 變速器軸和軸承的設(shè)計(jì)及校 核 ............................................................39 軸的設(shè)計(jì) ..........................................................................................................39 軸的 作用 及其設(shè)計(jì)要求 ......................................................................39 軸的結(jié)構(gòu)設(shè)計(jì) ......................................................................................39 軸的尺寸 計(jì)算 ......................................................................................40 軸的強(qiáng)度 計(jì) 算 及校核 .....................................................................................41 軸的剛度計(jì) 算 及校核 ..........................................................................41 軸的強(qiáng)度計(jì)算 及校核 ..........................................................................46 軸承的選擇 及校核 ..............................................................................50 本章小結(jié) .........................................................................................................52 第 5章 同步器的確定 ............................................................................................53 鎖銷(xiāo)式同步器 介紹 .........................................................................................53 鎖環(huán)式同步器 介紹 .........................................................................................54 本章小結(jié) .........................................................................................................55 第 6章 操縱機(jī)構(gòu)和箱體的確定 ..........................................................................56 操縱機(jī)構(gòu)的功用 .............................................................................................56 換檔位置 示意 圖 .............................................................................................56 變速器箱體的設(shè)計(jì) .........................................................................................56 本章小結(jié) .........................................................................................................57 結(jié)論 ..............................................................................................................................58 參考文獻(xiàn) ....................................................................................................