微型汽车变速器设计.docx
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微型汽车变速器设计
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微型汽车变速器设计
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摘要
汽车变速器是汽车总成部件中的重要组成部分,是主要的传动系统。
变速器的结构对汽车的动力性、经济性、操纵的可靠性与轻便性、传动的平稳性与效率等都有直接影响。
本次设计主要是依据哈飞HFJ6351B的有关参数,通过变速器各部分参数的选择和计算,设计出一种基本符合要求的手动变速器。
研究的基本内容为:
变速器传动机构布置方案,变速器各挡传动比的分配,变速器齿轮参数选择,变速器各挡齿轮齿数分配,变速器齿轮设计计算,变速器轴和轴承的设计计算,同步器和操纵机构及箱体的设计,利用AutoCAD软件绘制装配图和零件图等八项内容。
在设计过程中主要需解决的问题有:
变速器各参数的确定,变速器齿轮的设计、计算及校核,变速器轴的设计、计算及校核和轴承的校核计算,同步器和操纵机构及箱体的设计以及绘制装配图及零件图五大主要问题。
关键词:
变速器;传动比;参数;设计计算
Abstract
Automotivetransmissionpartsintheautomobileassemblyofanimportantpartofthemaindrivesystem.Transmissionofthepowerstructureofthevehicle,economy,manipulationofthereliabilityandportability,thesmoothdriveandhaveadirectimpactonefficiency.
ThedesignismainlybasedontherelevantparametersHafeiHFJ6351Bthroughthetransmissionparametersofthevariouspartsoftheselectionandtermsdesignedtomeettherequirementsofabasicmanualtransmission.Researchonthebasiccontentfor:
transmissiontransmissionlayoutprogramblocktransmissionofthetransmissionratioofthedistribution,transmissiongearselectionparameters,transmissiongearunitoftheblockdistribution,designandcalculationoftransmissiongear,transmissionshaftandbearingdesign,thesynchronizationandmanipulationofbodyandtankdesign,theuseofAutoCADsoftwaredrawassemblydrawingsandpartsofeightelements,suchasFig.Duringthedesignprocess,themainissuestobeaddressedare:
thedeterminationofparametersoftransmission,geartransmissiondesign,calculationandchecking,transmissionshaftofthedesign,calculationandcheckcalculationanddesignofbearings,synchronizationandmanipulationofbodiesandbodythedesignandassemblydrawingsandpartsmappingthetopfivemajorproblemsFig.
Keywords:
Transmission;TransmissionRatio;Parameters;DesignandCalculation
TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc325794217"摘要PAGEREF_Toc325794217\hI
HYPERLINK\l"_Toc325794218"AbstractPAGEREF_Toc325794218\hII
HYPERLINK\l"_Toc325794220"第1章绪论1
HYPERLINK\l"_Toc325794221"1.1汽车变速器概述PAGEREF_Toc325794221\h1
HYPERLINK\l"_Toc325794222"1.2汽车变速器设计的目的和意义PAGEREF_Toc325794222\h2
HYPERLINK\l"_Toc325794223"1.3汽车变速器国内外现状和发展趋势PAGEREF_Toc325794223\h2
HYPERLINK\l"_Toc325794224"1.3.1变速器国内外的现状PAGEREF_Toc325794224\h2
HYPERLINK\l"_Toc325794225"1.3.2汽车变速器的发展趋势PAGEREF_Toc325794225\h3
HYPERLINK\l"_Toc325794226"1.4手动变速器的特点和设计要求及内容PAGEREF_Toc325794226\h4
HYPERLINK\l"_Toc325794227"1.4.1手动变速器的特点PAGEREF_Toc325794227\h4
HYPERLINK\l"_Toc325794228"1.4.2手动变速器的设计要求PAGEREF_Toc325794228\h5
HYPERLINK\l"_Toc325794229"1.4.3设计的主要内容PAGEREF_Toc325794229\h6
HYPERLINK\l"_Toc325794230"第2章变速器传动机构布置方案确定PAGEREF_Toc325794230\h7
HYPERLINK\l"_Toc325794231"2.1设计所依据的主要技术参数PAGEREF_Toc325794231\h7
HYPERLINK\l"_Toc325794232"2.2变速器传动机构的结构分析和形式选择PAGEREF_Toc325794232\h7
HYPERLINK\l"_Toc325794233"2.2.1两轴式变速器的特点分析PAGEREF_Toc325794233\h8
HYPERLINK\l"_Toc325794234"2.2.2中间轴式变速器特点分析PAGEREF_Toc325794234\h9
HYPERLINK\l"_Toc325794235"2.2.3倒挡布置方案分析PAGEREF_Toc325794235\h10
HYPERLINK\l"_Toc325794236"2.2.4传动机构布置的其他问题PAGEREF_Toc325794236\h11
HYPERLINK\l"_Toc325794237"2.3零部件结构方案分析PAGEREF_Toc325794237\h12
HYPERLINK\l"_Toc325794238"2.3.1齿轮形式PAGEREF_Toc325794238\h12
HYPERLINK\l"_Toc325794239"2.3.2换挡机构形式PAGEREF_Toc325794239\h12
HYPERLINK\l"_Toc325794240"2.3.3防止自动脱挡的结构PAGEREF_Toc325794240\h13
HYPERLINK\l"_Toc325794241"2.3.4变速器轴承PAGEREF_Toc325794241\h14
HYPERLINK\l"_Toc325794242"2.4本设计所采用的传动机构布置方案PAGEREF_Toc325794242\h14
HYPERLINK\l"_Toc325794243"2.5本章小结PAGEREF_Toc325794243\h16
HYPERLINK\l"_Toc325794244"第3章变速器主要参数的选择和齿数分配PAGEREF_Toc325794244\h17
HYPERLINK\l"_Toc325794245"3.1变速器各挡传动比的确定PAGEREF_Toc325794245\h17
HYPERLINK\l"_Toc325794246"3.1.1变速器最低挡传动比的确定PAGEREF_Toc325794246\h17
HYPERLINK\l"_Toc325794247"3.1.2变速器其他各挡传动比的确定PAGEREF_Toc325794247\h18
HYPERLINK\l"_Toc325794248"3.2中心距的确定PAGEREF_Toc325794248\h19
HYPERLINK\l"_Toc325794249"3.3变速器外形尺寸的初选PAGEREF_Toc325794249\h19
HYPERLINK\l"_Toc325794250"3.4变速器齿轮参数的选择PAGEREF_Toc325794250\h20
HYPERLINK\l"_Toc325794251"3.4.1模数PAGEREF_Toc325794251\h20
HYPERLINK\l"_Toc325794252"3.4.2齿形、压力角及螺旋角PAGEREF_Toc325794252\h20
HYPERLINK\l"_Toc325794253"3.4.3齿宽PAGEREF_Toc325794253\h21
HYPERLINK\l"_Toc325794255"3.4.4齿顶高系数PAGEREF_Toc325794255\h22
HYPERLINK\l"_Toc325794256"3.5变速器各挡齿轮齿数的分配PAGEREF_Toc325794256\h22
HYPERLINK\l"_Toc325794257"3.5.1确定一挡齿轮的齿数PAGEREF_Toc325794257\h22
HYPERLINK\l"_Toc325794258"3.5.2对中心距进行修正PAGEREF_Toc325794258\h24
HYPERLINK\l"_Toc325794259"3.5.3确定常啮合齿轮的齿数PAGEREF_Toc325794259\h24
HYPERLINK\l"_Toc325794260"3.5.4确定其他各挡齿轮的齿数PAGEREF_Toc325794260\h26
HYPERLINK\l"_Toc325794261"3.6本章小结PAGEREF_Toc325794261\h29
HYPERLINK\l"_Toc325794262"第4章变速器齿轮的设计计算PAGEREF_Toc325794262\h30
HYPERLINK\l"_Toc325794263"4.1变速器齿轮的几何尺寸计算PAGEREF_Toc325794263\h30
HYPERLINK\l"_Toc325794264"4.2计算变速器各轴的扭矩和转速PAGEREF_Toc325794264\h31
HYPERLINK\l"_Toc325794265"4.3齿轮的强度计算和材料选择PAGEREF_Toc325794265\h32
HYPERLINK\l"_Toc325794266"4.3.1齿轮损坏的原因和形式PAGEREF_Toc325794266\h32
HYPERLINK\l"_Toc325794267"4.3.2齿轮的材料选择PAGEREF_Toc325794267\h33
HYPERLINK\l"_Toc325794268"4.3.3齿轮的强度计算PAGEREF_Toc325794268\h34
HYPERLINK\l"_Toc325794269"4.4本章小结PAGEREF_Toc325794269\h46
HYPERLINK\l"_Toc325794270"第5章变速器轴和轴承的设计计算PAGEREF_Toc325794270\h47
HYPERLINK\l"_Toc325794271"5.1初选变速器轴的轴径和轴长PAGEREF_Toc325794271\h47
HYPERLINK\l"_Toc325794272"5.2轴的结构设计PAGEREF_Toc325794272\h48
HYPERLINK\l"_Toc325794273"5.3变速器轴的强度计算PAGEREF_Toc325794273\h48
HYPERLINK\l"_Toc325794274"5.3.1齿轮和轴上的受力计算PAGEREF_Toc325794274\h48
HYPERLINK\l"_Toc325794275"5.3.2轴的强度计算PAGEREF_Toc325794275\h50
HYPERLINK\l"_Toc325794276"5.3.3轴的刚度计算PAGEREF_Toc325794276\h55
HYPERLINK\l"_Toc325794277"5.4变速器轴承的选择和校核PAGEREF_Toc325794277\h59
HYPERLINK\l"_Toc325794278"5.4.1第一轴轴承的选择和校核PAGEREF_Toc325794278\h59
HYPERLINK\l"_Toc325794279"5.4.2第二轴轴承的选择和校核PAGEREF_Toc325794279\h60
HYPERLINK\l"_Toc325794280"5.4.3中间轴轴承的选择和校核PAGEREF_Toc325794280\h61
HYPERLINK\l"_Toc325794281"5.5本章小结PAGEREF_Toc325794281\h61
HYPERLINK\l"_Toc325794282"第6章同步器和操纵机构的设计选用PAGEREF_Toc325794282\h62
HYPERLINK\l"_Toc325794283"6.1同步器的设计选用PAGEREF_Toc325794283\h62
HYPERLINK\l"_Toc325794284"6.1.1锁环式同步器PAGEREF_Toc325794284\h63
HYPERLINK\l"_Toc325794285"6.1.2锁销式同步器PAGEREF_Toc325794285\h64
HYPERLINK\l"_Toc325794286"6.1.3锁环式同步器主要尺寸的确定PAGEREF_Toc325794286\h65
HYPERLINK\l"_Toc325794287"6.1.4同步器主要参数的确定PAGEREF_Toc325794287\h66
HYPERLINK\l"_Toc325794288"6.2变速器操纵机构的设计选用PAGEREF_Toc325794288\h68
HYPERLINK\l"_Toc325794289"6.2.1变速器操纵机构的分类PAGEREF_Toc325794289\h68
HYPERLINK\l"_Toc325794290"6.2.2变速器常用操纵机构分析PAGEREF_Toc325794290\h70
HYPERLINK\l"_Toc325794291"6.3变速器箱体的设计PAGEREF_Toc325794291\h71
HYPERLINK\l"_Toc325794292"6.4本章小结PAGEREF_Toc325794292\h72
HYPERLINK\l"_Toc325794293"结论PAGEREF_Toc325794293\h73
HYPERLINK\l"_Toc325794294"致谢PAGEREF_Toc325794294\h74
HYPERLINK\l"_Toc256683664"参考文献75
CONTENTS
TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc325794217"AbstractPAGEREF_Toc325794217\hI
HYPERLINK\l"_Toc325794220"Chapter1Introduction1
HYPERLINK\l"_Toc325794221"1.1OverviewofautomotivetransmissionPAGEREF_Toc325794221\h1
HYPERLINK\l"_Toc325794222"1.2ThepurposeandsignificanceoftheautomotivetransmissiondesignPAGEREF_Toc325794222\h2
HYPERLINK\l"_Toc325794223"1.3AutomotivetransmissiondomesticandforeignsituationanddevelopmenttrendPAGEREF_Toc325794223\h2
HYPERLINK\l"_Toc325794224"1.3.1ThestatusofthetransmissionathomeandabroadPAGEREF_Toc325794224\h2
HYPERLINK\l"_Toc325794225"1.3.2ThedevelopmenttrendofautomobiletransmissionPAGEREF_Toc325794225\h3
HYPERLINK\l"_Toc325794226"1.4ManualtransmissioncharacteristicsanddesignrequirementsandcontentPAGEREF_Toc325794226\h4
HYPERLINK\l"_Toc325794227"1.4.1ManualtransmissioncharacteristicPAGEREF_Toc325794227\h4
HYPERLINK\l"_Toc325794228"1.4.2ThedesignrequirementsofthemanualtransmissionPAGEREF_Toc325794228\h5
HYPERLINK\l"_Toc325794229"1.4.3ThemaincontentofthedesignPAGEREF_Toc325794229\h6
HYPERLINK\l"_Toc325794230"Chapter2TransmissiontransmissionlayoutprogramtodeterminePAGEREF_Toc325794230\h7
HYPERLINK\l"_Toc325794231"2.1ThemaintechnicalparametersofthedesignisbasedonPAGEREF_Toc325794231\h7
HYPERLINK\l"_Toc325794232"2.2TransmissiontransmissionstructureandformofselectionPAGEREF_Toc325794232\h7
HYPERLINK\l"_Toc325794233"2.2.1Analysisofcharacteristicsoftwo-axistransmissionPAGEREF_Toc325794233\h8
HYPERLINK\l"_Toc325794234"2.2.2IntermediateshafttransmissioncharacteristicsofPAGEREF_Toc325794234\h9
HYPERLINK\l"_Toc325794235"2.2.3ReversegearlayoutprogramanalysisPAGEREF_Toc325794235\h10
HYPERLINK\l"_Toc325794236"2.2.4TransmissionlayoutotherissuesPAGEREF_Toc325794236\h11
HYPERLINK\l"_Toc325794237"2.3PartsstructureprogramanalysisPAGEREF_Toc325794237\h12
HYPERLINK\l"_Toc325794238"2.3.1GearintheformPAGEREF_Toc325794238\h12
HYPERLINK\l"_Toc325794239"2.3.2ShiftinstitutionalformsPAGEREF_Toc325794239\h12
HYPERLINK\l"_Toc325794240"2.3.3Topreventtheautomaticde-blockstructurePAGEREF_Toc325794