机械5

某齿轮油泵泵体的工艺分析及夹具设计 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齿轮油泵泵体。设计内容包括：1、工艺分析；2、钻2XФ7孔钻床专用夹具设计。齿轮油泵泵体是齿轮油泵上不可或缺的零件之一，为齿轮油泵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：齿轮油泵泵体、工艺、钻2XФ7孔 ABSTRACT With the rapid developme
nt of eco
nomy, ma
nufacturi
ng i
ndustry is developi
ng rapidly today. The size a
nd structure of
no
n-sta
ndard parts are also cha
ngi
ng rapidly. More a
nd more ge
neral fixtures desig
ned i
n the past are faci
ng elimi
natio
n. So the desig
n a
nd productio
n of special fixture is more a
nd more exte
nsive. The mai
n co
nte
nts of the research of special fixture i
nclude the determi
natio
n of positio
ni
ng scheme a
nd clampi
ng scheme, the selectio
n of positio
ni
ng eleme
nt a
nd clampi
ng eleme
nt, the selectio
n of guidi
ng device a
nd so o
n. The object of this desig
n a
nd research is the gear pump body. The desig
n co
nte
nts i
nclude: 1. Process a
nalysis; 2. Desig
n of special fixture for drilli
ng 2XФ7 hole drilli
ng machi
ne. Gear oil pump body is o
ne of the i
ndispe
nsable parts of gear oil pump,which provides guara
ntee for the
normal operatio
n of gear oil pump a
nd its compo
ne
nts. Starti
ng from the structural a
nalysis of the parts, reaso
nable selectio
n of positio
ni
ng datum, selectio
n ofvarious tool parameters a
nd selectio
n of cutti
ng parameters, etc. I
n arra
ngi
ng the process, rough a
nd fi
ne processi
ng is
needed accordi
ng to differe
nt processi
ng requireme
nts. I
n additio
n, cutti
ng parameters,worki
ng hours, process cards a
nd process cards are determi
ned. The desig
n co
nte
nts of special fixture i
nclude: fixi
ng positio
ni
ng scheme a
nd compo
ne
nts, fixi
ng clampi
ng scheme a
nd compo
ne
nts, fixi
ng guidi
ng device, calculati
ng cutti
ng force a
nd clampi
ng force, etc. Keywords: gear pump body, tech
nology, drilli
ng hole 2XФ7 目录 摘要I ABSTRACT II 1绪论1 1.1机床夹具的分类1 1.2机床夹具的组成1 1.3机床夹具的发展方向2 2零件的作用、组成表面及技术要求3 2.1零件的作用3 2.2零件的组成表面4 2.3零件的技术要求4 3零件的工艺分析及设计5 3.1机械加工工艺规程的概述、作用、制定原则及满足要求5 3.1.1机械加工工艺规程的概述5 3.1.2机械加工工艺规程的作用5 3.1.3机械加工工艺规程制定的原则5 3.1.4机械加工工艺规程应满足的使用要求6 3.2确定零件的生产类型及毛坯的制造形式7 3.2.1确定零件的生产类型7 3.2.2确定毛坯的制造形式7 3.3基准的选择与确定8 3.4工艺过程设计中应考虑的主要问题10 3.4.1加工方法选择的原则10 3.4.2加工阶段的划分10 3.4.3工序的合理组合11 3.5加工工艺路线的确定12 3.6加工设备及加工装备的选择13 3.7确定加工余量13 3.8计算切削用量、基本时间及辅助时间15 4钻2XФ7孔专用夹具设计31 4.1定位方案及装置的确定31 4.1.1定位方案的确定31 4.1.2定位元件的确定31 4.2夹紧方案及装置的确定32 4.2.1夹紧方案的确定32 4.2.2夹紧元件的确定32 4.3夹具体的设计32 4.4确定导向装置—钻套33 4.5计算钻削力34 4.6计算夹紧力34 4.7分析与计算定位误差35 结论36 致谢37 参考文献38