摘

专用机床是专门用于加工一种工件或工件的一定工序的机床，它可以同时用许多刀具进行切削，机床的辅助动作部分地实现了自动化，生产效率高。本篇论文所设计的多轴钻床属于专用机床的范畴，即八轴扩—铰专用机床，它是根据工件（车轮）的特点，采用多把刀具同时加工出多个孔（八个孔），其所要完成的工艺范围是扩—铰，操作方便，效率高。
全文共分四章：第一章为总体设计；第二章为机床总体布局；第三章为主轴箱及传动件的设计；第四章为主轴箱体的设计。其中主轴箱及传动件的设计，特别是主轴箱的设计是本文的主要部分。多轴钻床的部件设计就是在总体设计的基础上，开展机床各部件的设计，然后进行零件的设计。
关键词：专用机床   多轴钻床   主轴箱

Abstract
The appropriation tool machine uses for the tool machine that processes the certain work preface of a kind of work piece or the work piece exclusively, it can have to carry on slice to pare with many knifes at the same time, the assistance action partly of the tool machine carried out the automation, producing the efficiency highly. Many axles drilling machine that this text design belongs to the appropriation tool machine, namely six stalk expand-wring appropriation tool machine, it according to the characteristics of the work piece( car wheel), adopt many cutters processes a lot of holes ( six holes) at the same time, the craft scope that it want to be finished is to expand- wring.
The full text is divided into four chapters: the first chapter of the overall design; Chapter II of the machine overall layout; Chapter III of the main drive axle box and pieces of the design; Chapter IV of the spindle box design. Which spindle drive tanks and pieces of the design, especially the spindle box design is the main part of this paper. Among them the part of many axles drilling machine is designed, especially the design of principal axles box is a main part of this text. It is to launch the design of every part of the lathe on the basis of the thing that design virally that the part of many axle drilling machine is designed, then carry on the design of the part.
Keywords: the Appropriation tool machine   Many axles drilling machine principal axles box

目录

摘     要 I
Abstract II
目录 i
前 言 1
1 总体设计 3
1.1 概述 3
1.2 工艺方案的制定 3
1.2.1 制定工艺方案的原始条件分析 4
1.2.2 艺基准的选择—工—定位基准 4
1.2.3 工艺定路线的制定 6
1.3 刀具的选择及切削用量的确定 8
1.3.1 刀具的选择 8
2 机床总体布局 10
2.1 机床总体布局的基本要求 10
2.2 机床总体布局方案分析 10
2.2.1 同类机床总体布局方案分析 10
2.2.2  汽车轮辐钻孔及扩孔加工专用机床总体布局方案分析 12
3  主轴箱及传动件的设计 15
3.1 主轴箱传动系统设计的一般要求 15
3.2 动力部件的选择 15
3.3  电动机的选择计算 16
3.3.1 电动机功率的估算 16
3.3.2 选择电动机的型号 18
3.4 传动方案的选择 20
3.5 主轴箱齿轮的分布 23
3.6 齿轮传动设计 24
3.6.1高速级齿轮的设计 24
3.6.2中间传动齿轮的设计 30
3.7 初步估算各轴径 35
3.8 轴的设计 37
3.8.1中间传动轴（Ⅱ轴）的设计计算 37
3.8.2主轴（Ⅳ轴）的设计计算 40
3.9 滚动轴承的选择与寿命计算 45
3.9.1 传动（Ⅱ轴）轴上的轴承 45
3.9.2 主轴（Ⅳ轴）上的轴承 47
3.10 键联接的选择和验算 49
3.10.1 传动轴（Ⅱ轴）与大齿轮的键联接 49
3.10.2 主轴（Ⅳ轴）与的联接 50
4  主轴箱体的设计 51
4.1  主轴箱体设计的依据 51
4.2 主轴箱体的设计 52
4.3上台板的设计 53
4.3.1 材料的选取 53
4.3.2  尺寸的确定 53
4.3.3 结构设计 54
结束语 55
致 谢 - 57 -
参考文献 58