齿轮齿条转向器设计论文
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兰州工业高等专科学校毕业设计说明书
I 摘要
本次设计设计一款用于轻型汽车的转向器。论文首先对转向系的作用,基本构成、要求和转向系统的总体性能进行了分析,同时对转向系的空间位置及结构特点进行分析,确定了转向梯形的型式,简单的概述了转向传动机构。确定了转向器的结构和布置形式,分析了转向器的啮合传动的特点和传动效率。根据汽车工程参考某款轻型汽车的转向器的参数,对转向器进行设计,并对齿轮齿条的齿面接触强度和齿根弯曲强度进行校核,同时利用AUTOCAD软件绘制装配图和零件图。
关键词:汽车 转向系统 转向器 齿轮齿条式
兰州工业高等专科学校毕业设计说明书
II Abstract
The vergence implement design is used for light automobile originally time. Effect that the thesis
is first to vergence, the population function basically, composing , demanding system has carried
out analysis. The characteristic has carried out analysis on space location and structure changing
to a department at the same time , simple summary changing to transmission-mechanism. Have
ascertained the structure changing to an implement and have arranged a form, have analysed the
characteristic and drive efficiency changing to the implement falling-in drive. And the project
consults some light automobile of money vergence implement parameters according to the
automobile , design that to changing to an implement be in progress, the flank of a tooth to gear
wheel rack contacts the intensity and the curved intensity of dedendum carrying out the core of
school , makes use of the AUTOCAD software to draw assembling picture and part picture at the
same time.
Key words: Automotive Steering System Steering Gear Gear and Rack 兰州工业高等专科学校毕业设计说明书
III 目 录
摘要 ................................................................................................................................. I
Abstract ........................................................................................................................... II
1.前言 ............................................................................................................................1
1.1转向系的发展........................................................................................................................ 1
1.2汽车转向器国内外现状.......................................................................................................... 1
1.3 设计的主要内容 ................................................................................................................... 2
2.转向系系统分析 .................................................................................................................... 4
2.1转向系统的设计要求 ..................................................................................................... 4
2.2 转向系统总体性能 ........................................................................................................ 5
2.3转向系的空间位置及结构特点 ....................................................................................... 6
2.4转向传动机构................................................................................................................ 8
3.转向器总体方案设计 ............................................................................................................. 9
3.1转向器的作用................................................................................................................ 9
3.2 转向器的分类 ............................................................................................................... 9
3.4齿轮齿条式转向器的布置形式 ......................................................................................10
3.5齿轮齿条啮合传动的特点 ............................................................................................. 11
3.6 转向器效率的理论分析 ................................................................................................12
4.转向器的强度校核.........................................................................................................14
4.1齿条的强度计算 ..................................................................................................................16
4.1.1 齿条的受力分析 .......................................................................................................16
4.1.2 齿条杆部受拉压的强度计算 .....................................................................................17
4.2小齿轮的强度计算...............................................................................................................18
4.2.1.齿面接触疲劳强度计算 ............................................................................................18
4.2.2齿轮齿跟弯曲疲劳强度计算 ......................................................................................20
结论 ..........................................................................................................................................23
总结与体会 ...............................................................................................................................24
谢辞 ..........................................................................................................................................25