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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 本次設(shè)計(jì)的目的意義................................................1
1.2 變速器的發(fā)展現(xiàn)狀.............................................2
1.3 變速器設(shè)計(jì)面臨的主要問(wèn)題.......................................4
第2章 變速器的總體方案設(shè)計(jì).......... . . . . ........................5
2.1 變速器的功用及設(shè)計(jì)要求............................................5
2.2 變速器傳動(dòng)機(jī)構(gòu)的形式選擇與結(jié)構(gòu)分析................................5
2.2.1 三軸式變速器與兩軸式變速.....................................5
2.2.2 倒檔的布置方案............... ...... .........................5
2.3 變速器主要零件的結(jié)構(gòu)方案分析......................................7
2.3.1 齒輪型式............... ...... .... ..........................7
2.3.2 換檔結(jié)構(gòu)型式........... ...... .... ..........................7
2.3.3 軸承型式........... ...... .... .... ..........................7
2.4 傳動(dòng)方案的最終確定........................................ .. .....8
2.5 本章小結(jié)........................ ...... ...... ....................8
第3章 變速器主要參數(shù)的選擇與計(jì)算................. .................9
3.1初始數(shù)據(jù)............................. ...... ......................9
3.2變速器各檔傳動(dòng)比的確定..................... .......................9
3.3中心距的確定......................... ...... .....................10
3.4齒輪參數(shù)...................... ......... .......... ...............11
3.5 本章小結(jié)........................ .. .. .. .. .....................12
第4章 齒輪的設(shè)計(jì)計(jì)算與校核............. . . . . . . . . . ..............13
4.1 齒輪的設(shè)計(jì)計(jì)算... .. .. .................... ......................13
4.2 齒輪的強(qiáng)度計(jì)算與材料選擇.................. ..... ........ ........22
4.2.1 齒輪的損壞原因.......................................22
4.2.2 齒輪材料的選擇.........................................22
4.2.3 計(jì)算各軸的轉(zhuǎn)矩................. ... ........................23
4.2.4 齒輪的強(qiáng)度計(jì)算............ ....... .........................23
4.2.4 齒輪的接觸應(yīng)力............ ....... .........................27
4.3 本章小結(jié)................ .. .. .. .................................31
第5章 軸的設(shè)計(jì)與計(jì)算及軸承的選擇與校核...........................32
5.1 軸的計(jì)算.................... . . . . . ............................32
5.1.1 軸的工藝要求..... ....... ...... ...........................32
5.1.2 初選軸的直徑............ ....... .............. ............32
5.1.3 軸的剛度計(jì)算............ ....... ............. .............33
5.1.4 軸的強(qiáng)度計(jì)算............ ....... ............. .............35
5.2 軸承的選擇及校核............ ... .................................37
5.2.1 輸入軸的軸承選擇及校核...... . .. ............. .............37
5.2.1 輸出軸的軸承選擇及校核............ ....... ... .............38
5.3本章小結(jié)....... . ... ... ... ... ..................................39
第6章 變速器同步器與操縱機(jī)構(gòu)的選擇........ ....... ...............40
6.1同步器的選擇........... ... ... ..................................40
6.1.1 同步器的工作原理............ .... ... .. ... ... .............40
6.1.2 同步環(huán)的主要參數(shù)的確定........ ... ... .. ... ... .............40
6.2 變速器的操縱機(jī)構(gòu)........... ... ... ..............................41
6.2.1 變速器操縱機(jī)構(gòu)的功用............ .... ...... ... .............41
6.2.2 變速器操縱機(jī)構(gòu)應(yīng)滿(mǎn)足的要求.......... ...... ... .............41
6.2.3 換擋位置............ . ... ... ...... .. ... ... .............42
結(jié)論 ........ . ... ... ... ........ . ... ... ... . . . . . . . . . .. ... ... .43
參考文獻(xiàn) ......... ... ... ... ........ . ... . ... .. ... . . .. ... ... ...44
致謝 ........ .. ... ... ... ........ . ... ... ... ........ . . .. ... ... .45
附錄........ .. ... ... ... ........ . ... ... ... ........ . . .. ... ... .46