汽车转向系统毕业设计Word文件下载.docx

汽车转向系统毕业设计Word文件下载.docx

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式转向器的主要部件进行受力分析与数据校核，五是对整体式转向梯形机构的设计以及

验算，并根据梯形数据对转向传动机构作尺寸设计。

在转向梯形机构设计方面。

运用了优化计算工具Matlab

进行设计及验算。

Matlab

强大的计算功能以及简单的程序语法，使设计在参数变更时得到快捷而可靠的数据分析

和直观的二维曲线图。

最后设计中运用AutoCAD和CATIA作出齿轮齿条式转向器的零件

图以及装配图。

关键词：

转向机构，齿轮齿条，整体式转向梯形，Matlab梯形

Abstract

Thetitleofthistopicisthedesignofsteeringsystem.Rackandpinionsteeringof

MechanicalsteeringsystemandintegratedSteeringtrapezoidmechanismgeartothedesign

asthecenter.FirstlymakeanoverviewoftheSteeringSystem.Secondlytakeapreparationof

thedataofthedesign.Thirdly,makeachoiceofthesteeringformanddeterminetheprimary

parametersanddesignthestructureofRackandpinionsteering.Fourthly,Stressanalysisand

datachecking

oftheRackandpinion

steering.

Fifthly,design

ofSteering

trapezoid

mechanism,accordingtothetrapezoidaldatamakeananalysisanddesignofSteering

linkage.

InthedesignofintegratedSteeringtrapezoidmechanismthecomputationaltoolsMatlab

usedtoDesignandCheckingofthedata.ThepowerfulcomputingandIntuitivechartsofthe

MatlabcangiveusAccurateandquicklydata.IntheendAutoCADandCATIAwereusedto

makearackandpinionsteeringpartsdiagramsandassemblydrawings

Keywords:

Steeringsystem，MechanicalTypeSteeringGearandGearRack，

IntegratedSteeringtrapezoid，MatlabTrapezoid

目录

1绪论............................................................................................................................1............

1.1汽车转向系统概述.............................................................................................1.........

1.2汽车转向系统的国内外现状及发展趋势.............................................................2.....

1.3研究内容及论文构成..........................................................................................3........

2机械转向系统的性能要求及参数.................................................................................5.......

2.1机械转向系统的结构组成...................................................................................5.......

2.2转向系统的性能要求..........................................................................................6........

2.3转向系的效率.....................................................................................................7.........

2.4传动比特性........................................................................................................9..........

2.5转向器传动副的传动间隙.................................................................................1..1.....

3机械式转向器总体方案初步设计...............................................................................1..2.....

3.1转向器的分类及设计选择.................................................................................1..2.....

3.2齿轮齿条式转向器的基本设计..........................................................................1.2.....

3.2.1齿轮齿条式转向器的结构选择.................................................................1.2....

3.2.2齿轮齿条式转向器的布置形式.................................................................1.4....

3.2.3设计目标参数表以及对应的转向轮偏角计算 1..5.

3.2.4转向器参数选取与计算...........................................................................1..6.....

3.2.5齿轮轴的结构设计...................................................................................1.9......

3.2.6转向器材料及其他零件选择....................................................................2..0....

4齿轮齿条转向器校核.................................................................................................2..1.......

4.1齿条的强度计算...............................................................................................2..1.......

4.1.1齿条受力分析..........................................................................................2..1......

4.1.2齿条齿根弯曲强度的计算........................................................................2..2....

4.2小齿轮的强度计算............................................................................................2.3.......

4.2.1齿面接触疲劳强度计算...........................................................................2..3.....

4.2.2齿轮齿根弯曲疲劳强度计算....................................................................2..6....

4.3齿轮轴强度校核..............................................................................................2..7.......

5转向梯形机构的设计.................................................................................................3..1.......

5.1转向梯形机构概述............................................................................................3.1.......

5.2整体式转向梯形机构方案分析..........................................................................3.2.....

5.3整体式转向梯形机构数学模型分析..................................................................3..2....

5.4基于Matlab的整体式转向梯形机构优化设计...................