发动机翻转拆装台设计,设计说明书

1.1 课题来源与背景............................................................................................................1 1.2 解决的主要问题............................................................................................................1 1.3 国内外发展研究状况....................................................................................................2 1.4 存在的问题及解决方案................................................................................................2 1.5 设计的主要依据及指导思想........................................................................................3 2 发动机翻转拆状台设计任务书...........................................................................................4 2.1 题目名称........................................................................................................................4 2.2 总体布置简图................................................................................................................4 2.3 工作情况........................................................................................................................4 2.4 原始数据........................................................................................................................4 2.5 设计内容........................................................................................................................5 2.6 设计任务........................................................................................................................5 2.7 设计进度........................................................................................................................6 3 具体设计过程.......................................................................................................................7 3.1 传动方案的拟定及选择................................................................................................7 3.2 蜗轮蜗杆减速器主要参数确定计算............................................................................8 3.3 关键部件的设计计算和制作......................................................................................10 3.4 几何尺寸计算..............................................................................................................11 3.5 蜗轮蜗杆减速器关键部件的设计计算和制作..........................................................12 3.6 精确校核轴的疲劳强度..............................................................................................15 3.7 滚动轴承的选择及计算..............................................................................................18 3.8 键连接的选择及校核计算..........................................................................................20 3.9 失效形式和设计准则..................................................................................................20 3.10 受力分析....................................................................................................................21 3.11 蜗轮齿根弯曲疲劳强度计算 ....................................................................................22 3.12 蜗轮轴的弯曲强度....................................................................................................22 3.13 蜗杆传动的效率和齿面间滑动速度........................................................................23 3.14 蜗轮蜗杆减速器主要参数表....................................................................................24 3.15 架体强度校核............................................................................................................25 3.16 脚轮的选择................................................................................................................26 结 论.......................................................................................................................................27 致 谢.....................................................................................................................................28 参考文献 .................................................................................................................................29
本科毕业设计
题目名称： 发 动 机 翻 转 拆 装 台 设 计 学 院： 专业年级： 学生姓名： 班级学号： 指导教师：
二 XXX 年六月十日
摘要
摘要
现在学校汽车发动机拆装实习，是在简易的铁工作台上通过人力翻转对发动机进行 拆装的，拆装起来费时、费力、效率低，发动机支承不稳还容易倾倒伤人，而且在拆装 过程中观察发动机内部结构很不方便。即不能保证工件、工具、油、水不落地,也达不 到卫生清洁、安全、按时完成教学任务的基本要求,因此为保证教学质量而设计一台供 同学拆装实习和维修的发动机拆装台是非常必要的。 目前市场的发动机翻转拆装台类型较多，但都不适于学校使用。我设计的发动机翻转拆 装台使用蜗轮蜗杆减速器控制的，减速器类型为 ZA 型阿基米德螺旋线的，蜗杆为单线 型，传动比为 1：39，蜗杆输入转速 20r/min，蜗轮输出转速 180°/min。 在设计过程中严格依据以下标准：
Key words: worm wheel cylindrical worm reducer dismantling and installing table
- II -
Abstract
来自百度文库目录
摘 要.......................................................................................................................................1 Abstract .................................................................................................................................. II 1概 述.......................................................................................................................................1
《机械零件设计手册》JTGD60－2004 《机械设计基础》JTGD62－2004 《机械制图》JTGD62－2006
关键词：蜗轮；蜗杆；减速器；拆装台。
- I-
大学本科毕业设计
Abstract
Now the car engine dismantling and installing is on the table of iron by human overturned at school.It is a waste of time, laborious and inefficient. It is also easy to dump and woun people if the support unstable.It is unconvenient in the process of observation of the internal structure of the engine.There is no guarantee that the workpiece, tools, oil and water do not fall, and can not keep clean, safe, timely complete the tasks of the basic teaching requirements. In order to ensure the quality of teaching, it is very necessary to design a operate table for students dismantling and installing engine.There are many types of overturned operate tables in the current market. It is unfit for the school.The overturned operate table that I designed controled by Worm Gear Reducer of the ZA-reducer type spiral of Archimedes for a single type of worm. The transmission ratio is 1:39, the worm enter Speed is 20 r / min, Worm output speed is 180 °/ min.
In the design process in strict accordance with the following criteria: "Mechanical parts Design Manual" JTGD60-2004 "Mechanical design basis" JTGD62-2004 "Mechanical drawing" JTGD62-2006