变速箱装配图-展开图
摘要
实际应用中，车床主要进行车外圆、车端面和镗孔等工作。车削很少在其他种类的机床上进行，而且任何一种其它机床都不像车床那样方便的进行车削加工。由于车床还可以用来钻孔和铰孔，车床的多功能性可以使工件一次安装中进行几种加工。因此，在生产中使用的各种车床比任何其它种类的机床都多。
现代机床正在向高速度化、高精度化、高柔性化、高自动化、高可靠性等方向发展。CM6150型车床是一种中型精密普通机床，它具有操作方便，轻巧，结构简单，工艺性好，振动、噪声小，加工精度高，生产率高等优点。因此它被广泛的应用在各种车间。本设计以CM6150机床为基础，进行了车床中若干部件的设计。本设计的主要内容包括以下三部分：
主轴箱的设计，这部分主要包括：总体的设计与布局、各传动轴的设计及验算、主轴的设计及验算、各齿轮的设计及验算、主轴箱CAD图的绘制。
变速箱的设计，这部分主要包括：主要参数的选择原则，确定个档变速齿轮的模数、齿数等齿轮参数。
齿轮计算和轴的计算，对齿轮的接触强度和弯曲强度进行计算，进行轴的设计。介绍了轴的结构，轴径的选择方法，计算个档位的弯矩，扭矩，并找出轴的危险截面进行强度校核。
关键字：主轴箱；变速箱；传动
Abstract
Lathes are machine tools designed primarily to do turning, facing, and boring. Very little turning is done on other types of machine tools, and none can do it with equal facility. Because lathes also can do drilling and reaming, their versatility permits several operations to be done with a single setup of the workpiece. Consequently, more lathes of various type are used in manufacturing than any other machine tool.
The development of the machine tool has the following tendencies: high velocity, high precision, high automation and high reliability etc. However, The CM6150 is a medium-sized lathe with high precision. It has following advantages such as convenient operating, simple structure, good crafting, low noise and vibration, high manufacturing accuracy, high productivity and so on. So it is widely used in kinds of workshops. The design is based on CM6150 machine, a lathe in the design of a number of components.This design includes three parts below:
Design of the main shaft box，What is involved in this part are: the total layout and design, the design and calculating of each transferring shaft, the design of spindle, design of each gear and the CAD drawing of the spindle box.
Design of the transmission box ，What is involved in this part are: I explained the choosing principle of the main parameters I determined some parameters about gears, for example, the helical angle, the tooth width, the tooth number etc.
Gears ’s calculated and shaft ’s calculated ，I calculated the rigidity and strength about the main gears. I designed shaft and introduced their structure, the choosing method of their radius, I found their hazardous section ,then calculated the rigidity and strength.
Keywords: the main shaft box; the transmission box; transmission
目录
摘要I
Abstract II
1引言1
1.1车床简介及发展概况1
1.2本课题的目的和意义.................................................................................................2
2机床总体设计.........................................................................................................................3
2.1参数拟定3
2.1.1主要参数3
2.1.2确定转数公比值、转数数列、调速范围3
2.2总体布局3
2.2.1影响本机床总体布局的基本因素3
2.2.2布局简图5
2.2.3机床设计应满足的基本要求............................................................................5
3主传动系统设计6
3.1主传动系统概述..........................................................................................................6
3.1.1主传动的功用....................................................................................................6
3.1.2主传动的组成....................................................................................................6
3.1.3主传动系统的设计要求....................................................................................6
3.2传动方案确定10
3.2.1集中传动方式10
3.2.2分离传动方式10
3.3论证并确定合理的结构式和转速图11
3.3.1主变速系统传动系设计的一般原则11
3.3.2确定转速图11
3.3.3几点补充说明12
3.4齿数的确定14
3.4.1在确定齿数时应注意的几个问题14
3.4.2齿数的最终确定14
3.5拟定主传动系统图15
3.6确定带轮直径16
3.7计算主轴转速误差17
3.8原理简单叙述18
4传动件估算19
4.1主轴及各传动轴、各传动齿轮的计算转速19
4.1.1主轴的计算转速19
4.1.2各传动轴的计算转速19
4.1.3各齿轮计算转速19
4.2主轴支承轴颈尺寸和内孔径尺寸的确定20
4.2.1主轴前轴直径的确定20
4.2.2主轴后轴直径的确定20
4.2.3主轴内孔径的确定20
4.3传动轴直径初定20
4.4传动齿轮模数的初步计算21
5结构设计24
5.1带轮设计24
5.2制动机构设计24
5.3主轴的支承形式设计24
5.4轴的轴向固定25
5.5齿轮块设计25
5.6其它传动轴轴承的选择26
5.7主轴端部的结构形式26
5.8主轴的润滑与密封26
5.9操纵机构设计27
6主要零件核算29
6.1主轴强度校核29
6.1.1求切削力Fc和背向力错误！未找到引用源。 29
6.1.2求该轴齿轮受力30
6.1.3作出受力图、弯矩图、扭矩图30
6.1.4校核轴的强度31
6.2花键联接强度校核32
6.3齿轮的强度计算33
6.4滚动轴承的校核35
7结论37
致谢.........................................................................................................................................38
参考文献39
附录A英文原文40
附录B汉语翻译.......................................................................................................................47
0总装图
变速箱装配图-剖面图
齿轮
齿轮2
齿轮3
齿轮4
空心轴
轴
轴Ⅶ
轴Ⅸ
轴Ⅷ
轴套
主轴Ⅵ零件图
主轴箱总装图
主轴箱装配图-剖面图
主轴箱装配图-展开图
