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本科学生毕业设计HLJ-ZQ5整体驱动桥设计系部名称：汽车与交通工程学院专业班级：车辆07-6学生姓名：张明指导教师：职称：副教授TheGraduationDesignforBachelor'sDegreeTheDesignforDrivingAxleofHaFeicarCandidate：ZhangMingSpecialty：ConstructionMachineryClass：B07-6Supervisor：AssociateProf.CuiHongyaoHeilongjiangInstituteofTechnology黑龙江工程学院本科生毕业设计I摘要本次设计的题目是哈飞民意汽车驱动桥设计。驱动桥一般由主减速器、差速器、半轴及桥壳四部分组成，其基本功用是增大由传动轴或直接由变速器传来的转矩，将转矩分配给左、右车轮，并使左、右驱动车轮具有汽车行驶运动学所要求的差速功能；此外，还要承受作用于路面和车架或车厢之间的铅垂力、纵向力和横向力。本设计首先论述了驱动桥的总体结构，在分析驱动桥各部分结构型式、发展过程及其以往形式的优缺点的基础上，确定了总体设计方案：采用整体式驱动桥，主减速器的减速型式采用单级减速器，主减速器齿轮采用螺旋锥齿轮，差速器采用普通对称式圆锥行星齿轮差速器，半轴采用半浮式型式，桥壳采用钢板冲压焊接式整体式桥壳。关键词：驱动桥；主减速器；设计；计算；CAD黑龙江工程学院本科生毕业设计IIABSTRACTTheobjectofthedesignisthedesignfordrivingaxleofmini-carofSongHuajiangdrivingaxleisconsistedoffinaldrive,differentialmechanism,halfshaftandaxlehousing.Thebasicfunctionofdrivingaxleistoincreasethetorquetransmittedbydriveshaftordirectlytransmittedbygearbox,thendistributesittoleftandrightwheel,andmakethesetwowheelshavethedifferentialfunctionwhichisrequiredinautomobiledrivingkinematics;besides,thedrivingaxlemustalsostandtheleadhangsdownstrength,thelongitudinalforceandthetransverseforceactedontheroadsurface,theframeorthecompartmentlead.Theconfigurationofthedrivingaxleisintroducedinthethesisatfirst.Onthebasisoftheanalysisofthestructure,thedevelopingprocessandadvantagesanddisadvantagesoftheformertypeofdrivingaxle,thedesignadoptedtheIntegraldrivingaxle,singlereductiongearformaindecelerator’sdecelerationform,spiralbevelgearformaindecelerator’sgear,halffloatingforaxleandstamp-weldedsteelsheetofintegralaxlehousingforaxlehousing.Inthedesign,weaccomplishedthedesignforsinglereductiongear,taperedplanetarygeardifferentialmechanism,halffloatingaxle,thecheckingofaxlehousingandCADdrawingandsoon..Keywords:DrivingAxle;FinalDrive;Design;Calculation;CAD黑龙江工程学院本科生毕业设计目录第1章绪论...................................................................................................................11.1驱动桥的结构和种类..............................................................................................11.1.1汽车车桥的种类.............................................................................................11.1.2驱动桥的种类.................................................................................................11.1.3驱动桥结构组成.............................................................................................21.2设计内容...................................................................................................................6第2章设计方案的确定................................................................................................72.1设计主要参数..........................................................................................................72.2主减速器结构方案的确定.......................................................................................7（1）主减速器齿轮的类型的选择...............................................................................72.3差速器结构方案的确定...........................................................................................82.4半轴型式的确定......................................................................................................82.5桥壳型式的确定......................................................................................................92.6本章小结..................................................................................................................9第3章主减速器设计...................................................................................................103.1主减速比的确定....................................................................................................103.2主减速器齿轮计算载荷的确定............................................................................103.3主减速器齿轮参数的选择....................................................................................113.4主减速器螺旋锥齿轮的几何尺寸计算与强度计算............................................123.4.1主减速器螺旋锥齿轮的几何尺寸计算.......................................................123.4.2主减速器螺旋锥齿轮的强度计算...............................................................133.5主减速器齿轮的材料及热处理............................................................................163.6主减速器轴承的计算............................................................................................173.7主减速器的润滑....................................................................................................213.8本章小结................................................................................................................21第4章差速器设计.......................................................................................................224.1概述........................................................................................................................224.2对称式圆锥行星齿轮差速器................................................................................22黑龙江工程学院本科生毕业设计4.2.1差速器齿轮的基本参数选择.......................................................................234.2.2差速器齿轮的几何尺寸计算与强度计算...................................................244.3本章小结......................................................................