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黑龍江工程學(xué)院本科生畢業(yè)設(shè)計(jì)
目 錄
摘要......................................................................Ⅰ
Abstract....................................................................Ⅱ
第1章 緒論..............................................................1
1.1概述選題的背景目的及意義............................................1
1.2 國(guó)內(nèi)外研究狀況.....................................................1
1.3 選題的研究設(shè)想研究方法.............................................2
1.4 設(shè)計(jì)的主要內(nèi)容.....................................................2
1.5 預(yù)期結(jié)果和意義.....................................................3
第2章 總體方案設(shè)計(jì).....................................................4
2.1 任務(wù)書(shū)給定的參數(shù)...................................................4
2.2 設(shè)計(jì)應(yīng)滿(mǎn)足的基本要求...............................................4
2.3 變速器的類(lèi)型選擇...................................................5
2.4 變速器傳動(dòng)機(jī)構(gòu)的分析...............................................5
2.4.1 換檔機(jī)構(gòu)的選擇 ...............................................5
2.4.2倒檔布置方案 ..................................................6
2.5 設(shè)計(jì)方案...........................................................7
2.6 本章小結(jié)...........................................................7
第3章 變速器設(shè)計(jì)計(jì)算...................................................8
3.1軸的直徑............................................................8
3.2 傳動(dòng)比范圍.........................................................8
3.3 變速器軸承.........................................................9
3.4 中心距............................................................10
3.5 外形尺寸..........................................................10
3.6 齒輪參數(shù)..........................................................11
3.6.1 模數(shù)的選取...................................................11
3.6.2 壓力角....................................................11
3.6.3 螺旋角.......................................................11
3.6.4 齒寬.....................................................12
3.7 各擋齒輪齒數(shù)的分配..............................................12
3.7.1 確定一擋齒輪的齒數(shù) ......................................13
3.7.2 對(duì)中心距進(jìn)行修正 ........................................13
3.7.3 確定常嚙合傳動(dòng)齒輪副的齒數(shù) ..............................15
3.7.4 確定其他各擋的齒數(shù) ......................................17
3.7.5 確定倒擋直齒齒輪齒數(shù) ....................................22
3.8本章小結(jié).........................................................23
第4章 齒輪的校核....................................................24
4.1 齒輪的損壞形式..................................................24
4.2計(jì)算各軸的轉(zhuǎn)矩...................................................24
4.3 齒輪強(qiáng)度計(jì)算....................................................25
4.3.1 倒檔直齒輪彎曲應(yīng)力........................................25
4.3.2 斜齒輪彎曲應(yīng)力............................................26
4.3.3 輪齒接觸應(yīng)力..............................................27
4.4 本章小結(jié)........................................................30
第5章 變速器軸和軸承的設(shè)計(jì)計(jì)算....................................31
5.1初選變速器軸的軸長(zhǎng)...............................................31
5.2 軸的結(jié)構(gòu)設(shè)計(jì)....................................................31
5.3 變速器軸的強(qiáng)度計(jì)算..............................................32
5.3.1齒輪和軸上的受力計(jì)........................................32
5.3.2 軸的強(qiáng)度計(jì)算..............................................32
5.3.3 軸的剛度計(jì)算..............................................37
5.4 變速器軸承的選擇和校核..........................................40
5.4.1 第一軸軸承的選擇和校核....................................40
5.4.2 第二軸軸承的選擇和校核....................................42
5.4.3 中間軸軸承的選擇和校核....................................42
5.5 本章小結(jié)........................................................42
第6章 同步器和操縱機(jī)構(gòu)的選擇 ......................................43
6.1 鎖銷(xiāo)式同步器....................................................43
6.1.1 鎖銷(xiāo)式同步器結(jié)構(gòu)..........................................43
6.1.2 鎖銷(xiāo)式同步器工作原理......................................44
6.2 鎖環(huán)式同步器.......................................................44
6.2.1 鎖環(huán)式同步器結(jié)構(gòu).........................................44
6.2.2 鎖環(huán)式同步器工作原理.....................................45
6.2.3 鎖環(huán)式同步器主要尺寸的確定...............................46
6.3 變速器操縱機(jī)構(gòu).................................................47
6.3.1 直接操縱手動(dòng)換擋變速器...................................48
6.3.2 遠(yuǎn)距離操縱手動(dòng)換擋變速器.................................48
6.4 本章小結(jié).......................................................48
結(jié)論..................................................................49
致謝..................................................................50
參考文獻(xiàn)..............................................................51
黑龍江工程學(xué)院本科生畢業(yè)設(shè)計(jì)