机械5

弹性夹弯曲工艺及模具设计 摘要 冲压模具作为制造产品（或半产品）的一种工具，其作用是完成某种工艺。模具设计必须满足工艺要求，最终满足产品的形状、尺寸和精度的要求。因此冲压设计师必须掌握冲压工艺，包括冲压工艺的分类、各种工艺计算、工艺制订等基础知识，而后才可以选择模具的类型，进行模具设计，使模具的类型表面质量、尺寸精度结构及尺寸等满足工艺及产品的要求。 冷冲压工艺大致分两类：分离工序和成型工序。分离工序的目的是在冲压过程中将冲压件与板料按一定的轮廓线进行分离：分离工序又可分为落料、冲孔和剪切等。成型工序的目的是使冲压毛胚在不破坏其完整性的条件下产生塑性变形，并转化成产品所需要的形状：成形工序又分为弯曲、拉深、翻边、翻孔、胀形、扩孔等。 冷冲压模具是冲压生产的主要工艺设备。冲压件的表面质量、尺寸精度、生产率以及经济效益等，与模具结构及设计是否合理关系极大。 关键词:工艺计算、工艺制订、表面质量、尺寸精度 Be
ndi
ng process a
nd mold desig
n of elastic clamp Abstract Hurtle a ki
nd of tool of press the moldi
ng tool co
nduct a
nd actio
ns ma
nufacturi
ng product(or the half product),its fu
nctio
n is to complete a certai
n craft.Therefore hurtli
ng to press desig
ner must co
ntrol to hurtle to press the craft,the classificatio
n,various craft calculatio
n,craft that i
ncludes to hurtle to press the craft establishes etc.the fou
ndatio
n k
nowledge,just ca
n choose the type of the moldi
ng tool a
nd the
n,carryo
n the moldi
ng tool desig
n,make the type,structure a
nd size etc.of the moldi
ng tool satisfythe request of the craft a
nd product. Cold hurtle to press the craft to divide mostlytwo type: Separate thework preface a
nd model thework preface.Purpose that separates thework preface is at hurtle to ra
n over the dista
nce lieute
na
nt ge
neral to hurtle to press the piece a
nd pla
nks to a
nticipate to press certai
n outli
ne li
ne to carryo
n the separatio
n: Separati
ng thework preface ca
n is divided i
n to fall to a
nticipate agai
n,blu
nt bore a
nd shear to slice etc..The purpose that models thework preface is to make hurtle to press the hair,the creatio
n tra
nsforms u
nder the co
nditio
n of
not break its i
ntegrity,a
nd co
nvert the shape that product
need: Take shape thework preface a
nd is divided i
nto the flectio
n a
nd pull deep,tur
n over the side,tur
n over the bore,bulge form a
nd expa
nd the bore,etc..Cold hurtle to press the moldi
ng tool is mai
n craft equipme
nts that hurtles to press to produce.Hurtle the surface qua
ntity,size accuracy,rate of productio
n a
nd the eco
nomyperforma
nce etc.of press the piece,with the moldi
ng tool structure a
nd desig
nswhether the reaso
nable relatio
n is biggest. Keyword: the craft calculatio
n,craft establish,surface qua
ntity,size accuracy 目录 1绪论1 2冲压件工艺分析3 2.1弯曲件工艺性分析3 2.2弯曲件的毛胚尺寸计算3 2.3弯曲方案选择5 3弯曲过程中的相关计算6 3.1弯曲力的计算6 3.2校正弯曲时的弯曲力6 3.3顶件力的计算6 4压力机的确定7 4.1压力机确定7 4.2弯曲回弹7 5模具的总体设计9 5.1模具的结构设计9 5.2模具类型的选择9 5.3定位方式的选择9 5.4顶件和出件方式的选择10 5.5导向方式的选择10 6主要零部件的设计11 6.1凸凹模间隙11 6.2凸模的设计11 6.3座架的设计12 6.4凹模的设计13 6.5固定板的设计15 6.6下模座的设计15 6.7其它零部件的选择16 7模具的总装图及装配调试17 7.1模具的总装图17 7.2模具的安装18 7.3模具的调试18 8工作零件的加工工艺20 结论21 致谢22 参考文献23