论文总字数:17710字
摘 要
组合机床是以通用部件为基础,配以按工件特定形状和加工工艺设计的专用部件和夹具,组成的半自动或自动专用机床。主轴箱是主要的部件,为机床提供动力。这种机床有很多的特点,它的加工精度较高,自动化也达到了很高的水平,且它的组成结构简单,易于操作,因此能降低对工人操作水平的要求。此种机床也可以对工件进行多面、多刀及多工位进行加工。组合机床的适用范围广,能够加工大批量的工件,包含多道工序,此种机床可进行各种精度孔的加工,也能进行常规的加工方法。现代的组合机床越来越向着自动化的领域发展。长久以来,这项技术变得越来越成熟。而内燃机和汽车这类行业是组合机床的主要用户,因此有很大改变,种种因素不断有力推动组合机床前进,激励这类机床的不停发展。本说明书详细介绍了卧式双面钻攻丝组合机床设计的过程。
关键词:组合机床; 攻丝; 主轴箱; 夹具
Reducer parts 9 hole tapping machine tool design
Abstract
Modular machine tool is a kind of semi-automatic or automatic special machine tool, which is based on the general parts and equipped with special parts and fixtures designed according to the specific shape of the workpiece and processing technology. The spindle box is the main component that powers the machine tool.This machine tool has a lot of characteristics, its machining accuracy is high, automation has reached a very high level, and its structure is simple, easy to operate, so it can reduce the requirements for workers to operate the level.This kind of machine tool can also process the workpiece in multi-surface, multi-tool and multi-station.Modular machine tools have a wide range of applications, capable of processing large quantities of workpieces, including multiple processes, this machine tool can be used for a variety of precision hole processing, but also for conventional processing methods.Modern modular machine tools are increasingly developing towards the field of automation. Over time, the technology has become more sophisticated. But the internal combustion engine and the automobile this kind of industry are the combination machine tool"s main user, therefore has the very big change, each kind of factor unceasingly vigorously impels the combination machine tool to advance, stimulates this kind of machine tool"s unceasing development.This manual introduces in detail the design process of horizontal double-face drilling and tapping machine tool.
Keywords:Combined Machine Tool,Tap,Headstock,Clamp
目 录
摘 要…………………………………………………………………………………………… Ⅰ
Abstract…………………………………………………………………………………………… Ⅱ
第一章 绪 论…………………………………………………………………………………………1
1.1组合机床的特点………………………………………………………………………………1
1.2组合机床发展趋势……………………………………………………………………………1
1.3机床设计目的及要求…………………………………………………………………………1
第二章 总体设计方案………………………………………………………………………………2
2.1研究被加工零件图……………………………………………………………………………2
2.2制定工艺方案…………………………………………………………………………………2
2.2.1毛坯余量的确定…………………………………………………………………………2
2.2.2影响机床工艺方案制定的主要因素……………………………………………………3
2.2.3制订工艺路线的出发点…………………………………………………………………3
2.2.4零件加工的各道工序……………………………………………………………………3
2.3编制工艺规程卡………………………………………………………………………………4
第三章 夹具设计…………………………………………………………………………………… 10
3.1夹具的设计………………………………………………………………………………… 10
3.1.1定位基准的选择…………………………………………………………………………10
3.2夹紧机构的设计和计算………………………………………………………………………10
3.3夹紧力的计算…………………………………………………………………………………11
3.3.1 夹紧力作用点的确定………………………………………………………………… 12
3.3.2 夹紧力方向的确定…………………………………………………………………… 12
3.3.3 夹紧力大小的确定…………………………………………………………………… 12
3.4定位误差分析…………………………………………………………………………………14
第四章 组合机床及其主轴箱的设计………………………………………………………………14
4.1加工示意图……………………………………………………………………………………14
4.1.1加工示意图的内容………………………………………………………………………14
4.2攻丝机构设计…………………………………………………………………………………14
4.2.1加工示意图中刀具、工具刀具装置的选择……………………………………………14
4.3机床尺寸联系图………………………………………………………………………………15
4.3.1动力部件的选择…………………………………………………………………………15
4.4多轴箱的设计和计算…………………………………………………………………………17
4.4.1多轴箱设计的原始依据…………………………………………………………………17
4.4.2主轴结构形式的选择及动力的计算……………………………………………………17
4.4.3多轴箱的动力计算………………………………………………………………………18
4.5传动系统的设计………………………………………………………………………………18
4.5.1传动比……………………………………………………………………………………18
4.5.2油泵的安置………………………………………………………………………………20
4.6轴的检查和连接………………………………………………………………………………20
4.6.1轴上载荷…………………………………………………………………………………20
4.6.2各主轴坐标的计算………………………………………………………………………20
第五章 总 结……………………………………………………………………………………… 22
致 谢……………………………………………………………………………………………… 23
参考文献…………………………………………………………………………………………… 24
第一章 绪 论
组合机床的组成主要有两部分,其中通用部件占很大部分,专用部件占少数。组合机床再配合为工件设计出的专用夹具可组合成半自动或自动机床。该种机床一般用于进行箱体类零件的加工,也可以加工特殊外形的零件。在此种机床上可以进行孔的加工,如钻孔、扩孔、铰孔、镗孔、攻丝、磨削、铣削、车削、及滚压等工序,生产效率较高,产品的质量比较稳定,劳动强度较低。
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