猎豹CS9轿车转向系统设计(含CAD零件装配图,CATIA三维图)(任务书,开题报告,文献摘要,论文说明书14000字,CAD图7张,CATIA三维图)
摘 要
转向系统对于汽车而言十分的重要，而其中的转向器更是转向系统的重中之重，既然转向器这么的重要，那么对它的研究一定要深入，才能发挥它的重要意义。汽车的转向器更要完善和改进才能跟上这汽车发展迅速的时代。在机械转向器中，齿轮齿条式转向器的结构最是简单，铝合金和镁合金压铸形成壳体，所以转向器质量相对其他转向器来说比较小，体积小，转向摇臂和转向直拉杆都不用设计到转向系统里面，因此转向盘的转角可扩大，刚性大，制造成本也低，适用在各种车型之中。
本篇论文是设计猎豹CS9的转向器以及转向系统等。首先，先对整体的转向系统进行较为完整的了解，再查询一些齿轮齿条式转向器的资料并且进行探究，把齿轮齿条式转向器的各种类型都罗列出来，比较他们的优缺点及实际应用现状，在对转向器的类型进行选择。之后，参考公司原有的CS9汽车总体构架参数，计算出转动系的力传动比与角传动比，确定齿轮齿条的各种几何参数，让齿轮齿条式转向器的总体设计容易实现和构造合理，在对设计的CS9转向系统进行受力分析，疲劳强度校核等等，并且对进行了总体布置，为了优化，采用三维软件CATIA绘制齿轮齿条转向器的数模，绘制工程制图，进而完成齿轮齿条式转向器的完整图纸。
关键词：转向系统；齿轮齿条；转向器
Abstract
The steering system is an integral part of the car, and the steering device is an extremely important part of the steering system. Since the steering device is so important, it must be studied in depth before it can play its important role. The automotive industry is rapidly developing, so car steering gear is also constantly developing and improving. In the mechanical steering gear, the rack and pinion steering gear is simple and compact in structure, and the housing is made of aluminum alloy and magnesium alloy die casting. The quality of the steering gear is relatively small and the occupied volume is small. There is no steering rocker arm and straight pull rod. Therefore, the steering wheel angle can be increased, the rigidity is large, and the manufacturing cost is low, so it is widely used in various automobiles.
This design mainly focuses on the design of the Cheetah CS9 steering gear. First of all, first of all the overall steering system to a more complete understanding, and then query some of the rack and pinion steering gear data and explore, the various types of rack and pinion steering gear are listed, compare their advantages and disadvantages And actual application status, choose the type of steering gear. First consult with the company under the original overall framework parameters of the CS9 car, calculate the power transmission ratio and angular gear ratio of the rotation system, etc. to determine various geometric parameters of the rack and pinion, so as to make the overall of the rack and pinion steering gear In the design, he was subjected to force analysis, fatigue strength check, etc., and he purposely optimized the general layout design of the steering system. Finally, the three-dimensional software catia was used to draw the digital model of the rack and pinion steering gear, drawing the engineering drawings.
Keywords：Steering system; Rack and pinion; steering gear
目录
第一章 绪论 1
1.1 齿轮齿条式转向器概述以及设计背景 1
1.2转向系统的发展现状及趋势 2
第二章 电动助力齿轮齿条式转向系统的概述 4
2.1 转向系统的概述 4
2.1.1 转向系统的分类 4
2.1.2 转向系统的组成 4
2.2 齿轮齿条式转向系统 4
2.2.1齿轮齿条式转向系统的主要部件 4
2.3 阿尔克曼转向理论 6
2.4 CATIA设计软件简介 7
2.5 本章小结 7
第三章 转向系统方案分析及选择 8
3.1转向器的方案分析及选择 8
3.1.1齿轮齿条式 8
3.1.2蜗杆滚轮式 11
3.1.3蜗杆曲柄指销式 11
3.1.4循环球式转向器• 11
3.2 转向操纵机构设计方案 12
3.2.1转向轴方案的分析 12
3.2.2万向节方案的分析 12
3.3转向传动机构 13
3.3.1整体式转向梯形 13
3.3.2 断开式转向梯形 13
3.4电动助力转向机构 14
3.5本章小结 15
第四章 转向系统参数选择与设计 17
4.1 转向系统计算载荷参数确定 17
4.1.1汽车原地转向力矩计算 17
4.1.2 转向轮侧偏角的计算 17
4.1.3角传动比与力传动比的设计 18
4.2 转向器的设计计算 20
4.2.1转向齿轮的设计计算 20
4.2.2轮的主要几何尺寸 24
4.2.3齿条参数的确定 24
4.3转向梯形的设计计算 24
4.4电动助力转向系统设计 26
4.4.1电机的选择 26
4.4.2减速机构 27
4.4.3助力曲线和传感器选择 28
第五章 结论 29
参考文献 30
致 谢 31
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