机械5

靠背固定板级进模设计 摘要：本设计题目为靠背固定板级进模设计，体现了冲孔弯曲类零件的设计要求、内容及方向，有一定的设计意义。通过对该零件模具的设计，进一步加强了设计者级进模设计的基础知识，为设计更复杂的级进模具做好了铺垫和吸取了更深刻的经验。 本设计运用冲裁弯曲成型工艺及模具设计的基础只是，首先分析了制件的成本及性能要求，为选取工艺方案适合的模具类型做好了准备；然后分析了制件的形状大小，便于选取模具；最后分析了制件的特征，确定模具的设计参数、设计要点及模架的选龋 本制件是靠背固定板零件级进模设计，将落料和冲孔、弯曲等设计在一副模具中，模具操作简便，生产效率高，性能可靠。本设计通过零件的工艺性综合分析，包括零件的经济性综合分析，冲压工艺性分析，冲压工艺方案的分析和确定，从方案一、方案二、方案三、方案四、方案五中进行了方案性能的比较，最终确定了方案。然后进行工艺计算，其中包括坯料尺寸计算，排样和裁板方案，采用的裁法，步距精确度的确定，冲压力的计算，落料的工序、冲孔的工序、弯曲的工序，以及的模具结构形式的选择，卸料装置、定位装置、模具及凸模和凹模的刃口尺寸的确定和校核。最后还有模具整体设计，模具工作零件设计，等等一系列的设计，本设计中都一一进行了阐述。才有了这么一套完整的设计。 阐述了级进模的结构设计工程及其工作过程，通过系统的工艺分析，采用冲孔、落料等工序进行加工。通过计算工艺力以确定模具压力中心，并选择压力机的型号。落料凹模通过凹模固定板与下模座连接来固定。模具采用下出料方式和卸料装置。本模具结构一般，性能可靠，工作平稳，提高了生产效率，降低劳动强度和生产成本。弯曲类模具又是冷冲模的一种，是指通过一定工序将坯料冲裁成形的模具。按照冲压的工艺性质分类，弯曲模具是使材料发生塑性变形的冲裁模具。本课题内容也包括对该零件进行冲压工艺分析和有关工艺计算，确定合理的冲压工艺方案，设计冲压工序的两套模具，正确的选用标准零件和其它的零件，对冲压结构进行了工艺分析已选取压力机。绘制模具二维装配图和零件图。通过对级进模模具设计，以巩固和深化所学知识。 弯曲冲裁多工位级进模，根据设计零件的尺寸、材料、批量生产等要求，首先分析零件的工艺性，确定冲裁工艺方案及模具结构方案，然后通过工艺设计技术，确定排样，计算冲压力和压力中心，初选压力机，计算凸、凹模尺寸和公差，最后设计选用零、部件，对压力机进行校核，绘制模具总装草图以及三维实体图，以及对模具主要零件的加工工艺规程。其中在结构设计中，主要对凸模、凹模、定位零件、卸料装置等进行了设计，对于部分零件选用的标准件，本文就没深入设计，并且在结构设计的同时，对部分零部件进行了加工工艺分析，最终才完成本设计。 关键词：级进模，冲压工艺，模具设计，冲孔，落料 Desig
n of progressive die for backrest board level ABSTRACT：The topic of this desig
n is the desig
n of progressive die for backrest board level,reflect the co
nte
nts a
nd requireme
nts,desig
n of pu
nchi
ng directio
n of be
ndi
ng parts,the desig
n of a certai
n sig
nifica
nce.Through the desig
n of the die parts,to further stre
ngthe
n the basic k
nowledge of the desig
ners of the progressive die desig
n,which paves thewayfor a more profou
nd experie
nce a
nd lesso
ns for the desig
n of more complexprogressive die. The use of desig
n drawi
ng based bla
nki
ng be
ndi
ng formi
ng process a
nd die desig
n is,firstlya
nalyzes the requireme
nts of cost a
nd performa
nce parts,readyfor the selectio
n of process scheme for the types of mold; the
n a
nalyzed the shape a
nd size of parts,easyselectio
n of die; fi
nallya
nalyses the parts feature selectio
n,desig
n a
nd mold desig
n parameter die of. This part is the desig
n of progressive die for the backrest plate part level,the bla
nki
ng a
nd pu
nchi
ng,be
ndi
ng a
nd other desig
n i
n a die,the die has the adva
ntages of simple operatio
n,high productio
n efficie
ncy,reliable performa
nce.This desig
n through process i
ntegrated parts of the eco
nomy,i
ncludi
ng the comprehe
nsive a
nalysis of parts,stampi
ng process a
nalysis,a
nalysis a
nd determi
ne the stampi
ng process scheme,compared schemes from scheme,scheme two,scheme three,scheme four,the fifth scheme,fi
nallydetermi
ned the scheme.The
n the process calculatio
n,i
ncludi
ng calculatio
n of bla
nk size,layout a
nd the co
nfere
nce board,cutti
ng method,steps to determi
ne the dista
nce accuracy,bla
nki
ng force calculatio
n,falli
ng process,pu
nchi
ng material process,be
ndi
ng process,a
nd the mould structure form selectio
n,determi
ne a
nd check discharge device,positio
ni
ng device,die a
nd pu
nch a
nd die cutti
ng edge size.Fi
nally,mold desig
n,mold desig
n of theworki
ng parts,a
nd so o
n a series of desig
n,the desig
n of all o
ne o
ne are described.O
nlywith such a complete set of desig
n. Thepassageexpou
ndso
nthestructuredesig
ni
ngprojecta
ndwork processoftheprogressivedie,a
ndusessomeworki
ngprocedures,suchaspu
nchi
ng,fla
ngi
ng,bla
nki
nga
ndsoo
n,toprocessthroughthetech
nologica
nalysisofthesystem.Throughcalculati
ngtheprocesstodetermi
nethece
nterofthedie’spressure,a
ndselectthemodelofthepresses.Bla
nki
ngdieisfixedbyco
n
necti
ngthedieholderwiththedieset.Thedieadoptsthewayoflowerejectio
na
ndelasticitydischargedevices.Itsstructureisrelativelysimple,theperforma
nceisreliablea
ndtheworkissteady.Ithasimprovedtheproduci
ngefficie
ncya
ndreducedthei
nte
nsityoflabora
ndcostofproductio
n. Be
ndi
ngdieis a ki
nd ofcold stampi
ng die,is refers to throughcertai
nprocedurewilldie bla
nkpu
nchi
ngformi
ng.Classificatio
naccordi
ng to the processproperties ofstampi
ng,be
ndi
ng dieismakes the materialbla
nki
ngdie plasticdeformatio
n.This thesisalso i
ncludes thestampi
ng process a
nalysis a
ndprocesscalculatio
n of theparts,determi
ni
ng thereaso
nable stampi
ng process scheme,desig
ntwo sets of mould pressi
ng procedure,the correct selectio
n of sta
ndard partsa
nd otherparts,the structure of the stampi
ng processa
nalysis ofthe selectedpressuremachi
ne.Drawi
ngdie assemblydrawi
ng a
nd 2D.Theprogressive diedesig
n,i
n order to co
nsolidatea
nd deepe
nthe k
nowledge. Thispaperdesig
nsabe
nta
ndpu
nchedmulti-positio
nprogressivedie.Accordi
ngtothemeasureme
nt,materiala
ndrequireme
ntsofbatchproductio
nofthei
ndispe
nsablecompo
ne
nts,ma
nufacturabilityofthecompo
ne
ntsiscarefullya
nalysedi
nthefirstplacetodetermi
nethestructureofthediesa
ndhowtopu
nchthem.Afterwards,processdesig
nmethodwasemployedtodecidelayouta
ndcalculatestampi
ngpressurea
ndpressurece
nterwithwhichpressi
ngmachi
nesca
nbechose
n.Atthesametime,themeasureme
ntsofbothcavitya
ndterracediea
ndtheir tolera
ncewerecalculated.I
nthee
nd,propercompo
ne
ntsweredesig
nedusi
ngPro/E.I
nthedesig
nofdiestructure,thecavitya
ndterracedie,locati
ngeleme
nta
nddischargeu
nitwerespeciallydesig
ned.Astosomecompo
ne
nts,sta
ndardcompo
ne
ntswereadopted.Mea
ntime,worki
ngprocesswerea
nalysedi
ndetails. KEYWORDS:Progressivedie;Stampi
ngprocess;Molddesig
ni
ng;Pu
nch;Bla
nki
ng 目录 1绪论1 1.1背景1 1.2模具设计的安全要点2 1.3级进模3 2设计课题（靠背固定板级进模设计）5 3零件的工艺性综合分析6 3.1零件的经济性综合分析6 3.2冲压工艺性分析6 3.3冲压工艺方案的分析和确定7 3.4方案性能比较8 4工艺计算9 4.1坯料尺寸计算9 4.2排样和裁板方案9 4.3弹性元件计算10 5排样图11 6步距精度的确定12 7冲压力计算（各工序机选最大冲压力）13 7.1落料工序13 7.2冲3×φ6孔工序13 7.3落料冲孔复合工序13 7.4弯曲工艺13 7.5压力机初选14 8模具结构形式的选择15 8.1模具类型15 8.2卸料装置15 8.3定位装置15 8.4模架15 9冲φ6孔凸模和凹模刃口尺寸确定17 10凸模的校核21 11凸模长度的确定22 12其他凸模和凹模人口尺寸确定23 12.1冲3x33长方孔的凸模和凹模23 12.2冲3×11的切断凸模和凹模24 12.3侧刃和凹模25 13模具工作零件设计27 13.1凸模1设计27 13.2凸模2设计27 13.3凸模3设计27 13.4侧刃设计27 13.5成形凸模设计27 13.6凹模设计22 13.7上、下垫板的设计28 13.8挡料板28 13.9模柄的选择28 13.10螺栓、销钉的选择29 14模具整体设计30 总结31 致谢32 参考文献33