四档变速器设计.docx
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四档变速器设计.docx
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四档变速器设计
毕 业 设 计(论文)
说 明 书
毕业设计(论文)题目
机电 系(部)年级专业 机电工程 姓名
设计(论文)题目:
机械式四档变速器
设计开始时间:
07年3月12日
设计结束时间:
07年6月10日
设计指导人:
教研室主任:
系 主 任:
阳泉职业技术学院
毕业设计(论文)评阅书
题目:
机械式四档变速器
系(部)年级专业 姓名
评阅意见:
成绩:
指导教师:
职 务:
年 月 日
阳泉职业技术学院
毕业设计(论文)答辩评定书
年级专业班级:
姓名:
答辩过程
问题提问
回答情况
记录员:
成绩评定
指导教师
答辩小组
综合成绩
专业答辩组组长:
年 月 日
阳泉职业技术学院
毕业设计(论文)任务书
毕业设计(论文)题目:
机械式四档变速器设计
毕业设计(论文)要求及原始数据(资料):
1.发动机额定功率级最高转速:
80KW,4800r/min;
2.变速器的参数选择.
(1)中心距A的选择.
(2)变速器轴向尺寸,四档(3.0~3.4)A
(3)轴的直径d.
(4)齿轮参数.
(5)各档齿轮齿数的分配.
3.变速器传动简图.
毕业设计(论文)主要内容:
1.变速器传动系统的总体设计.
2.传动系统的设计.
3.轴齿轮的加工.
学生应交出的设计文件(论文):
1、设计说明书一份。
2、总装配图一张。
(O号)
3、组件图一张。
(1号)
4、零件图两张(手工绘制)。
(2号)
主要参考文献(资料):
李澄.机械制图.高等教育出版社出版;
卜炎.机械设计传动装置手册.机械工业出版社发行1998.12出版
邓文英.金属工艺学.高等教育出版.2000.7出版
沈养中.工程力学.高等教育出版社.2003.7出版
屠卫星.汽车底盘构造.人民交通出版社.2001.8出版
成大先.机械设计图图册.化学工业出版社.2000.3出版
张勇.电机拖动与控制.机械工业出版社.2004.6出版
李澄、吴天生、闻百桥.机械制图.高等教育出版社.2003.8出版
吴昌林、唐增宝、钟毅芳.机械设计.华中科技大学出版社2001.2出版
专业班级机电工程1班学生丁伟
要求设计(论文)工作起止日期3月12日—6月10日
指导教师签字日期
教研室主任审查签字日期
系主任批准签字日期
摘要························································3
Abstract····················································3
变速器的简介················································4
1.变速器传动机构的方案分析································6
2.变速器零、部件结构方案分析······························7
3.变速器操纵机构··········································8
1.变速器的参数选择··········································8
1.1一档齿轮齿数的确定····································8
1.2中心距A的选择········································9
1.3确定齿轮参数·········································10
1.3.1齿宽选择·······································10
1.3.2压力角·········································11
1.3.3齿轮螺旋角·····································11
1.3.4校验齿轮的接触强度·····························11
1.4变速器轴向尺寸·······································13
1.5轴的直径·············································13
1.6各档齿轮齿数的分配···································14
1.6.1确定常啮合传动齿轮副的齿数·····················14
1.6.2确定其他各档的齿数·····························15
2.变速器传动···············································16
2.1传动简图·············································16
2.2同步器(简介)········································16
2.2.1惯性式同步机···································18
2.2.2同步器工作原理·································18
2.2.3齿轮材料·······································19
2.2.4齿轮材料、热处理·······························20
2.2.5齿轮精度等级···································20
3.故障诊断与检修···········································21
3.1常见故障与检修·······································21
3.1.1变速器的异常声响·······························21
3.1.2变速器跳档·····································22
3.1.3挂档困难·······································22
3.1.4变速器乱档·····································23
3.1.5变速器发热·····································23
3.1.6变速器漏油·····································24
3.2变速器零件的检修·····································24
3.2.1齿轮与花键的检修·······························24
3.2.2轴的检修·······································24
3.2.3锁环式变速器的检修·····························24
4.变速器的润滑·············································25
4.1润滑的基本知识·······································25
4.2变速器润滑油·········································25
4.3变速器润滑系统·······································25
4.4变速器零件的清洗·····································26
5.变速器的装配·············································26
5.1变速器装配注意事项··································26
5.2变速器总成的装配····································27
5.3中间轴后轴承间隙调整方法·····························28
英文说明···················································29
参考文献···················································30
致谢···················································31
摘要
变速器是汽车传动系中最主要的部件之一。
变速箱由变速传动机构和变速操纵机构两部分组成。
变速传动机构的主要作用是改变转距和转速的数值和方向;操纵机构的主要作用是控制传动机构,实现变速器传动比的交换,即实现换档,以达到变速变距。
关键字:
变速传动机构、变速操纵机构、齿轮
Abstract
Becomesoonboxformbecometospreadtomovetheorganizationandbecomesoontomanipulatetheorganizationtwopartstoconstitutesoon.Mainfunctionthatbecomestospreadtomovetheorganizationsoonisthechangeturnstheandturnsoonofthenumberandthedirection;Themainfunctionthatmanipulatestheorganizationisacontroltospreadtomovetheorganization,carryoutthetransformationthatthegearboxspreadstomovetheration,thentherealizationshiftgear,toattaintobecometochangethesoon.
Keywords:
Variable-speedcontrolmechanism,speedchangecontrol
Mechanism,gear.
变速器简介
我们知道,汽车发动机在一定的转速下能够达到最好的状态,此时发出的功率比较大,燃油经济性也比较好。
因此,我们希望发动机总是在最好的状态下工作。
但是,汽车在使用的时候需要有不同的速度,这样就产生了矛盾。
这个矛盾要通过变速器来解决。
汽车变速器的作用用一句话概括,就叫做变
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