摘要 于产品生产而言，夹具用于夹紧，生产之中玩不可少的一种工具。使用夹具之处相当之多，所获经济价值高，不需太多的组成零部件。目前的工件千变万化，很多夹具已经无法再次使用彼时有此，对专用夹具设计成为重要之事。对其开展设计之时，首先要肯定如何对零件予以定位，此后设计夹紧装置，并且给出夹紧方案，接着对夹具剩余部分开展设计。 此次所设计的专用夹具，生产工件为锁架，需钻加工孔Ф8，依据老师所交于的图纸，设计夹具，编写工艺，清楚此工件作何用，分析产品的工艺。按照设计内容，此夹具为机床夹具，生产之时务必确保其精度，效率务必高，另外操作之时需便利。 最开始设计，览阅相当之多和本次设计有关联的资料，可将图纸看明白，清楚工件的构造，另外分析其工艺，予以肯定所用粗基准、精基准，将其生产之时所需余量以及坯料之规格予以肯定，此后方可编写出工件的生产工艺，将每道工序之中切削用量以及工时予以确定，此后设计符合本次要求之夹具。 关键词：锁架；加工工艺；钻Ф8孔；夹具设计；工序；切削用量 Abstract I
n terms of product productio
n,the fixture is used for clampi
ng a
nd plays a
n i
ndispe
nsable tool i
n productio
n.There are quite a lot of places to use the fixture,which has high eco
nomicvalue a
nd does
not
need too ma
nycompo
ne
nts.At prese
nt,theworkpieces are ever-cha
ngi
ng,a
nd ma
nyjigs ca
n
not be used agai
n,which isveryimporta
nt for the desig
n of special jigs.Whe
nwe desig
n it,we should first co
nfirm howto locate the parts,the
n desig
n the clampi
ng device,a
nd give the clampi
ng scheme,the
n desig
n the rest of the fixture. The special fixture desig
ned this time,the productio
nworkpiece is the lock frame,a
nd the machi
ni
ng holeФ8
needs to be drilled.Accordi
ng to the drawi
ng submitted bythe teacher,desig
n the fixture,prepare the process,k
nowwhat theworkpiece is used for,a
nd a
nalyze the product process.Accordi
ng to the desig
n co
nte
nt,the fixture is a machi
ne tool fixture,which must be e
nsured to be accurate,efficie
nt a
nd co
nve
nie
nt for operatio
n. At the begi
n
ni
ng of the desig
n,you ca
n read a lot of materials related to this desig
n,see the drawi
ngs clearly,u
ndersta
nd the structure of theworkpiece,a
nalyze its process,co
nfirm the used coarse a
nd fi
ne be
nchmarks,a
nd co
nfirm the required margi
n a
nd the specificatio
n of the bla
nk at the time of productio
n.The
nyou ca
nwrite out the productio
n process of theworkpiece,a
nd the cutti
ng amou
nt a
ndworki
ng hours i
n each process Co
nfirm,a
nd the
n desig
n the fixture that meets the requireme
nts of this time. Keywords: lock frame; processi
ng tech
nology; drilli
ngФ8 holes; fixture desig
n; process; cutti
ng amou
nt 目录 摘要0 Abstract 1 序言3 1计算生产纲领、确定生产类型4 1.1生产纲领4 1.2生产效率分析4 1.3生产类型4 2零件的分析6 2.1零件的作用6 2.2零件的分析6 3工艺规程设计7 3.1锁架毛坯形式7 3.2基面的选择7 3.2.1粗基准的选择原则7 3.2.2精基准选择的原则7 3.3制定工艺路线8 3.4确定各工序的加工余量9 3.5确定切削生产之所用量以及时间定额11 4钻床夹具设计28 4.1问题的提出28 4.2定位分析28 4.3定位误差分析28 4.4切削力的计算与夹紧力分析29 4.5钻套设计29 4.6夹具设计及操作简要说明31 结束语32 谢辞33 参考文献34