机械5

离合器毂圈加工工艺及钻M8螺纹孔夹具的设计 摘要 在经济飞速向前的当下，制造业快速发展的今天。非标零件的尺寸、结构也千变万化。以往设计的通用夹具，越来越多的面临淘汰。所以专用夹具的设计与生产越来越广泛。专用夹具的研究其主要内容有定位方案、夹紧方案的确定，定位元件、夹紧元件的选择，导向装置的选择等等。 本次设计研究的对象是离合器毂。设计内容包括2个方面：1、工艺分析；2、钻M8螺纹孔钻床专用夹具设计。离合器毂是机器上不可或缺的零件之一，为机器及零部件的正常运转提供保障。 从零件结构分析入手，合理选择定位基准，各种刀具参数选择以及切削用量的选择等。在安排工艺过程时，根据加工要求不同，需要进行粗精加工。另外还确定了切削参数，加工工时，填写工艺过程卡片和工序卡片。专用夹具设计内容有：确定定位方案及元件，确定夹紧方案及元件，确定导向装置，计算切削力及夹紧力等。 关键词：离合器毂、工艺、M8螺纹孔、钻床、专用夹具 ABSTRACT With the rapid eco
nomic developme
nt, the ma
nufacturi
ng i
ndustry is developi
ng rapidly today. The dime
nsio
ns a
nd structure of
no
n-sta
ndard parts are alsovaried. I
n the past, the desig
n of commo
n jig, more a
nd more face elimi
natio
n. So the desig
n a
nd productio
n of special fixture is more a
nd more exte
nsive. The research of the special fixture mai
nly i
ncludes the positio
ni
ng scheme, the determi
natio
n of the clampi
ng scheme, the selectio
n of positio
ni
ng eleme
nt, clampi
ng device, the selectio
n of the guidi
ng device a
nd so o
n. The object of this desig
n study is the clutch hub. Desig
n co
nte
nts i
nclude 2 aspects: 1. Process a
nalysis; 2. Drilli
ng M8 threaded hole drilli
ng machi
ne special fixture desig
n. The clutch hub is o
ne of the i
ndispe
nsable parts of the machi
ne, providi
ng guara
ntee for the
normal operatio
n of the machi
ne a
nd parts. Starti
ng from the a
nalysis of the parts structure, the selectio
n of the positio
ni
ng datum, the choice ofvarious tool parameters a
nd the choice of cutti
ng amou
nt are selected. I
n the process of arra
ngi
ng the process, accordi
ng to the requireme
nts of processi
ng, rough fi
nishi
ng is required. I
n additio
n, the cutti
ng parameters, machi
ni
ng time, filli
ng process card a
nd process card are also determi
ned. The desig
n co
nte
nt of the special fixture is: determi
ne the positio
ni
ng scheme a
nd compo
ne
nts, determi
ne the clampi
ng scheme a
nd compo
ne
nts, determi
ne the guidi
ng device, calculate the cutti
ng force a
nd clampi
ng force, etc. Keywords: clutch hub, process, M8 thread hole, drilli
ng machi
ne, special fixture. 目录 摘要I ABSTRACT II 1绪论1 1.1机械制造及机床夹具概述1 1.2机床夹具的组成2 1.3机床夹具的设计要点3 1.4机床夹具的分类3 1.5机床夹具的发展方向4 2零件的作用、组成表面、技术要求及形位公差分析5 2.1零件的作用分析5 2.2零件的组成表面分析6 2.3零件的技术要求分析6 2.4零件的形位公差分析7 3零件的工艺分析及设计8 3.1机械加工工艺规程的概述、作用、制定原则及满足要求8 3.1.1机械加工工艺规程的概述8 3.1.2机械加工工艺规程的作用8 3.1.3机械加工工艺规程制定的原则8 3.1.4机械加工工艺规程应满足的使用要求9 3.2确定零件的生产类型及毛坯的制造形式10 3.2.1确定零件的生产类型10 3.2.2确定毛坯的制造形式11 3.3基准的选择与确定11 3.4工艺过程设计中应考虑的主要问题13 3.4.1加工方法选择的原则13 3.4.2加工阶段的划分13 3.4.3工序的合理组合14 3.5加工工艺路线的选择、比较与确定15 3.6加工设备及加工装备的选择16 3.7确定加工余量17 3.8计算切削用量、基本时间及辅助时间20 4钻M8螺纹孔专用夹具设计38 4.1定位方案及装置的确定38 4.1.1定位方案的确定38 4.1.3定位元件的确定38 4.2夹紧方案及装置的确定39 4.2.1夹紧方案的确定39 4.2.2夹紧元件的确定40 4.3夹具体的设计40 4.4确定导向装置—钻套41 4.5计算切削力41 4.6计算夹紧力41 4.7定位误差的分析42 5结论44 6致谢45 参考文献46