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传动轴花键轴毕业设计论文

小草范文网  发布于:2017-04-11  分类: 毕业设计 手机版

篇一:轴加工工艺及夹具毕业设计论文

毕 业 设 计(论文)

(说 明 书)

题 目:传动轴加工工艺及夹具设计

姓 名:学 号:

平顶山工业职业技术学院

年月 日

目录

中文摘要 ....................................................................................... Ⅰ

英文摘要 ....................................................................................... Ⅱ

1概述 .................................................................................................

1.1 问题的提出及研究意向 .............................

1.2 本文的目的和内容 .................................

2零件的分析 ...................................................................................

2.1零件的作用 .......................................

2.2零件的工艺分析 ...................................

2.3零件表面加工方法 .................................

3加工方案的选择 .........................................................................

3.1方案选择 .........................................

3.2加工的技术要求 ...................................

4确定毛坯 .......................................................................................

4.1传动轴毛坯 .......................................

4.2传动轴材料 .......................................

4.3确定锻件加工余量 .................................

5工艺规程设计 ..............................................................................

5.1定位基准的选择 ...................................

5.2热处理方法 .......................................

5.3拟定工艺规程 .....................................

5.4加工顺序安排 .....................................

5.5制定工艺路线 .....................................

6夹具的选择 ...................................................................................

6.1夹具的作用 ........................................

6.2铣床夹具的设计特点 ................................

6.3定位原理的几种情况 ................................

7心得体会 .......................................................................................8 致谢 ................................................................................................

9参考文献 .......................................................................................

摘 要

通过在校期间对传动轴的学习和认识对传动轴进行一下系统的分析和设计,

支承传动件的零件称为轴。轴类零件毕业设计是机械工程类专业学生完成本专业

教学计划的最后一个极为重要的实践性教学环节,是使学生综合运用所学过的基

本理论、基本知识与基本技能去解决专业范围内的工程技术问题而进行的一次基

本训练。这对学生即将从事的相关技术工作和未来事业的开拓都具有一定意义

传动轴是组成机器零件的主要零件之,一切做回转运动的传动零件(例如:

齿轮,蜗轮等)都必须安装在传动轴上才能进行运动及动力的传动,传动轴常用

于变速箱与驱动桥之间的连接。这种轴一般较长,且转速高,只能承受扭矩而不

承受弯矩。应该使传动轴具有足够的刚度和高临界转速,在强度计算中,由于所

取的安全系数较大,从而使轴的尺寸过大,本文讨论的传动轴工艺设计方法,并

根据现行规范增添了些表面处理的方式比如表面发兰。

关键词:传动轴,零件,刚度,强度 ,夹具

ABSTRACT

Through the study of shaft during school and transmission of the

system are analyzed and design. Supporting transmission parts called

shaft. Axial parts of graduation design is mechanical engineering

specialty students complete the teaching plan last a very important

practical teaching link is to make the students comprehensive use of basic

theory, we learned the basic knowledge and skills to solve major problems

within the scope of the engineering technology and a basic training. The

student is engaged in technical work related to the development and futurecareer has certain

Shaft is composed of the main parts of the machine parts, all of the

transmission parts motion (for example: gear, gear, etc.) must be

installed in the transmission of power to exercise and shaft transmission,

often used in the connection between the transmission and drive. The shaft

generally is long, and the high speed, can withstand torque not inherit

the moment. Should make the shaft has enough rigidity and high speed,

strength calculation, because of the large safety factor, thus make shaft

dimension, this paper discusses the transmission technology design

methods, and according to the current standard added some way of surface

treatment

Keywords:Shaft, parts, stiffness, strength, surface flange

篇二:汽车传动轴设计及数控加工

成都理工大学工程技术学院毕业论文

汽车传动轴设计及数控加工

作者姓名:王 奇

专业名称:机械工程及自动化

指导教师:赵春雨 讲师

成都理工大学工程技术学院

学位论文诚信承诺书

本人慎重承诺和声明:

1.本人已认真学习《学位论文作假行为处理办法》(中华人民共和国教育部第34号令)、《成都理工大学工程技术学院学位论文作假行为处理实施细则(试行)》(成理工教发〔2013〕30号)文件并已知晓教育部、学院对论文作假行为处理的有关规定,知晓论文作假可能导致作假者被取消学位申请资格、注销学位证书、开除学籍甚至被追究法律责任等后果。

2.本人已认真学习《成都理工大学工程技术学院毕业设计指导手册》,已知晓学院对论文撰写的内容和格式要求。

3.本人所提交的学位论文(题目: ),是在指导教师指导下独立完成,本人对该论文的真实性、原创性负责。若论文按有关程序调查后被认定存在作假行为,本人自行承担相应的后果。

承诺人(学生签名):

20年月日

注:学位论文指向我校申请学士学位所提交的本科学生毕业实习报告、毕业论文和毕业设计报告。

摘要

随着我国社会经济发展与科学技术的进步,我国汽车业的高速发展,带动我国汽车传动轴需求持续大幅增长。车辆技术的进步和车辆密度的加大,对传动轴的性能要求也越来越高,传动轴技术得到飞速的发展,传动轴作为汽车的重要组成部分,它性能的好坏在很大程度上影响着汽车的燃油经济性、加速时间、动力性及成本等方面,因此,如何研究开发出高性能的传动轴,是我们需要解决的一个问题。

此论文在系统的介绍汽车传动轴的机构机及其运作方式的基础之上,对汽车传动轴的机械部分进行具体的分析,理解传动轴从而掌握汽车传动轴的运作方式和方法,再通过分析十字轴,前后花键轴,突缘叉,万向节叉,突缘等部分的工作原理及状态,进一步熟悉传动轴的功能,在此基础之上,通过所学的知识及其收集的资料,自主对汽车传动轴机械部分进行分析和设计。

关键词:传动轴十字轴万向节叉

Abstract

With China's social and economic development and the progress of science and technology, the rapid development of China's automobile industry, China's automobile drive shaft drives demand continues to grow. Increased vehicle technology and vehicle density, on the performance of the transmission shaft are increasingly high requirements, the drive shaft technology obtained the rapid development, the transmission shaft as an important part of the vehicle, its performance has great influence on the fuel economy, acceleration time, power and cost, vehicle therefore, how to research and develop the drive shaft of high performance, is a problem we need to solve.

On the basis of this paper on the introduction of automobile transmission shaft system of the mechanism and mode of operation, a specific analysis of the mechanical parts of automobile transmission shaft, drive shaft so as to master the understanding of automobile transmission shaft operation mode and method, and through the analysis of the cross axle, before and after the spline shaft, flange fork, universal joint fork, work principle and flange and other parts of the state, further familiar with the transmission axis function, on this basis, through knowledge and collecting the data, independent analysis and design of the automobile transmission shaft mechanical parts.

Keywords:drive shaft,universal joint pin,universal joint fork

目录

摘要 ............................................................................................................ I Abstract .................................................................................................. II 目录 ......................................................................................................... III

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

1.1概述 .............................................................................................. 1

1.2国内外汽车传动轴的背景、发展及现状 .................................. 1

1.2.1传动轴发展背景 .................................................................... 1

1.2.2 国内发展状况 ....................................................................... 2

1.2.3国外传动轴发展状况 ............................................................ 3

1.3汽车传动轴的发展历程 .............................................................. 3

1.4汽车传动轴的功能及用途 .......................................................... 4

1.5汽车传动轴机械部分特征和设计要求 ...................................... 5

1.6汽车传动轴整体简述 .................................................................. 5

1.6.1传动轴的功能及用途 ............................................................ 6

1.6.2 汽车传动轴组成部分 ......................................................... 6

1.7 万向节设计整体分析 ................................................................. 6

1.7.1 万向节传动特点 ................................................................. 7

1.7.2 万向节的分类 ..................................................................... 7

1.7.3 准等速万向节 ..................................................................... 8

1.7.4 球叉式万向节 ..................................................................... 8

1.7.5 不等速万向节 ..................................................................... 9

1.7.6 万向节选择 ......................................................................... 9

2 万向传动结构分析 ............................................................................. 10

2.1 万向传动的运动和受力分析 ................................................... 10

2.1.1 单十字轴万向节传动 ....................................................... 10

2.2 双十字轴万向节传动 ........................................................... 11

3 汽车传动轴 ......................................................................................... 13

3.1 汽车传动轴花键 ....................................................................... 13

III

篇三:轿车传动轴的设计与校核

毕业设计

轿车传动轴的设计与校核

2012年5月

摘要

传动轴是组成机器零件的主要零件之,一切做回转运动的传动零件(例如:齿轮,蜗

轮等)都必须安装在传动轴上才能进行运动及动力的传动,传动轴常用于变速箱与驱动桥

之间的连接。这种轴一般较长,且转速高,只能承受扭矩而不承受弯矩。应该使传动轴具

有足够的刚度和高临界转速,在强度计算中,由于所取的安全系数较大,从而使轴的尺寸

过大,本文讨论的传动轴工艺设计方法,并根据现行规范增添了些表面处理的方式比如表

面发兰。

提出一种三点接触沟道截面形式的球笼式等速万向节, 其钟形壳外沟道的沟道截面

形式为圆弧沟道 , 星 形套内沟道的沟道截面形式为椭圆沟道或双心弧沟道。对其内、

外沟道结构进行设计,并利用 H e r t z 接触理论进行接触应力的计算。结果表明, 三

点接触沟道能减小内、 外沟道接触应力,改善其内部接触状况。

关键词 :球笼式等速万向节; 三点接触沟道; 接触应力 ; 计算

ABSTRACT

Drive shaft is composed of the main parts of the machine parts, all do rotary

movement of the transmission parts (such as: gear, worm gear, etc.) must be

installed on the shaft to movement and power transmission, driving shaft is often

used in the connection between the transmission and drive axle. The shaft is longer

than the general, and high speed, can withstand the torque under bending moment.

Should make the shaft has enough stiffness and high critical speed, the strength

calculation, due to take the safety coefficient is larger, so that the size of the shaft is

too big, this article discusses the transmission process design method, and

according to the current specification adds some surface treatment way, such as

hair surface.

Put forward a three-point contact channel cross section form of ball cage

patterned constant speed universal joint, the bell-shaped shell outside the channel

cross section form of the channel is a circular arc channel, stars form within the set

of channel of the channel or dual channel cross section form of ellipse arc channel.

Was carried out on the inside and outside channel structure design, and using the

theory of t H e r z contact for the calculation of contact stress. Results show that

three contact channel can reduce the contact stress, the internal and external

channel to improve the internal contact condition.

K

传动轴花键轴毕业设计论文

ey words: Birfield ball-joint; 3 contact channel; Contact stress; Calculation

目 录

引 言 ....................................................... 错误!未定义书签。

第一章 传动轴 ................................................ 错误!未定义书签。

第二章 球笼等速万向节的设计 ................................................... 4

2.1 建立约束条件 .............................................................. 4

2.2 万向传动的计算载荷 ........................................................ 5

2.3 星形套和钟形壳的结构设计 .................................................. 6

2.4 万向节受力分析 ........................................................... 12

2.5 沟道设计 ................................................................. 16

2.6其它参数的设计 .......................................... 错误!未定义书签。7

2.7 接触应力计算 ............................................................. 17

2.8万向节寿命计算 ............................................................ 19

第三章 花键轴设计 ............................................................. 19

第四章 零件的工艺分析 ......................................................... 21

4.1零件表面加工方法的选择 .................................................... 21

4.2孔加工方案 ................................................................ 21

4.3加工方案的选择 ............................................................ 22

4.4确定毛坯 .................................................................. 22

4.5工艺规程设计 .............................................................. 23

结论 .......................................................................... 28

参考文献 ...................................................................... 29

致 谢 ......................................................................... 30

引言:

球笼式等速万向节是目前应用最为广泛的等速万向节,作为前置前驱动轿车的关键部件,等速万向节的性能和寿命与接触应力密切相关,万向节疲劳破坏的特征是常在沟道表面造成剥落和点 蚀。球笼式等速万向节接触应力与其沟道截面形式有着很大的关系,因此,沟道设计和制造的能力 直接影响万向节的工作能力和使用寿命?。

目前, 球笼式等速万向节内部沟道截面形式 主要为圆弧形、 椭圆形和双心弧形, 且其内、外沟道都采用相同的截面形式。但内沟道的接触应力要比外沟道的接触应力大得多,且内沟道的 接触疲劳、点蚀破坏程度高于外沟道。而在相同的尺寸大小、经受相同转矩及转速的前提下,椭圆形与双心弧形内沟道的接触应力要比圆弧形的小,而圆弧形外沟道的接触应力要比椭圆形与双心弧形的小。在此前提下,提出了一种三点接触沟道截面形式的球笼式等速万向节,以期改善其内部接触情况

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