机械5

短臂零件级进模具设计 摘要 在冲压模具类型中，分为三大类，分别是单工序模，复合模以及级进模，本次设计中涉及的是级进模，而级进模又叫做连续模，其定义就是将工序在一套模具之中按照一定的排列顺序，通过设置的送料方式以及定位方式，在每一次进行运动时，模具的工位就会向前运动一步，最后完成冲裁以及成型。级进模的优势非常明显，能够应对不同类型的工序，不管是冲孔落料还是弯曲拉深，级进模之中都能够将其组合排列分解最终一套模具完成，这是其他模具类型都不能够拥有的条件优势。正是随着社会的不断发展，当今的工件需求越来越高，自然而然的对于冲压模具零件的结构以及效率要求也越来越高，在保证模具产品生产效率高的情况下还能够有效的保证模具产品的质量，这也导致了现如今级进模在模具生产中的比重较高。 本次设计是对短臂零件进行冲压模具设计，首先对任务要求的工件进行工艺性分析，确定该工件是否能够满足基本的冲压工艺性要求，如是弯曲及拉深件，需要在进行冲压模具设计之前对工件的弯曲以及拉深部分进行展开尺寸计算，随后对工件进行排样图设计，计算压力中心，刃口尺寸，以及冲压力等等，随后对模具的零部件比如凸模凹模固定板等等进行设计，对于导柱导套模柄和上下模座以及各类圆销钉紧固螺钉等等，我们将采用大量的冲压模具标准件来设计，大量使用标准件是现在不管是企业还是个人设计时的趋势，不仅仅能够提高设计时的效率并且能够在生产时降低模具成本，提升模具质量。 最后，利用二维软件将模具装配图及零件绘制，并且整理成说明书。 关键词：冲压模具；短臂零件；级进模；工艺性；展开尺寸；排样图 Abstract I
n the type of stampi
ng dies,there are three mai
n categories: si
ngle-process dies,compou
nd dies a
nd progressive dies.I
n this desig
n,progressive dies are i
nvolved,a
nd progressive dies are also called co
nti
nuous dies.The defi
nitio
n of progressive dies is to arra
nge the processes i
n a set of dies i
n a certai
n order.Through the set feedi
ng mode a
nd positio
ni
ng mode,the positio
n of the dieswill move forward i
n each moveme
nt.Move o
ne step to fi
nish pu
nchi
ng a
nd formi
ng.The adva
ntages of progressive dies are obvious.Theyca
n copewith differe
nt types ofwork,whether pu
nchi
ng,bla
nki
ng or be
ndi
ng,a
nd theyca
n be arra
nged a
nd disassembled i
nto the fi
nal set of dies.This is a co
nditio
nal adva
ntage that other die types ca
n
not possess.It iswith the co
nti
nuous developme
nt of societythat the requireme
nt of today'swork pieces becomes higher a
nd higher.Naturally,the requireme
nt for structure a
nd efficie
ncyof stampi
ng die parts becomes higher a
nd higher.U
nder the circumsta
nce of high productio
n efficie
ncyof die products,the qualityof die products ca
n also be effectivelyguara
nteed.This also leads to a higher proportio
n of progressive dies i
n die productio
n
nowadays. This desig
n is to desig
n the stampi
ng die for the short arm parts.Firstly,theworkpiece required bythe task is a
nalyzed tech
nicallyto determi
newhether theworkpiece ca
n meet the basic stampi
ng tech
nological requireme
nts,such as be
ndi
ng a
nd deep drawi
ng parts.Before the desig
n of the stampi
ng die,it is
necessaryto calculate the expa
ndi
ng dime
nsio
n of the be
ndi
ng a
nd deep drawi
ng parts of theworkpiece,a
nd the
n to desig
n the layout of theworkpiece.Calculate the pressure ce
nter,edge size,stampi
ng force,etc.,the
n desig
n the parts of the die,such as the fixed plate of the co
nvexa
nd co
ncave dies,etc.For the ha
ndle of guide sleeve of guide pillar,the upper a
nd lower dies,a
ndvarious faste
ni
ng screws of rou
nd pi
ns,etc.,wewill use a large
number of sta
ndard parts of stampi
ng dies to desig
n.It is the tre
nd to use sta
ndard parts exte
nsivelyi
n the desig
n of both e
nterprises a
nd i
ndividuals.It ca
n
not o
nlyimprove the efficie
ncyof desig
n,but also reduce the cost of mold a
nd improve the qualityof mold i
n productio
n. Fi
nally,the die assemblydrawi
ng a
nd parts are draw
n bytwo-dime
nsio
nal software a
nd the i
nstructio
ns are arra
nged. Keywords: stampi
ng dies; short arm parts; progressive dies;workma
nship; developme
nt dime
nsio
ns; layout drawi
ngs 目录 摘要I Abstract II 1绪论1 1.1概述1 1.2选题背景及意义2 2冲裁件的结构工艺性分析3 2.1制件简介3 2.2材料分析3 2.3零件结构4 3确定工艺方案及模具的结构形式5 3.1冲裁方案的分析及确定5 3.2方案种类5 3.3方案的比较与分析5 4模具总体结构设计7 4.1模具类型的选择7 4.2送料方式的选择7 4.3定位方式的选择7 4.4卸料、出件方式的选择7 4.5标准模架和导向方式的选择8 5工艺参数计算10 5.1毛坯尺寸参数的计算10 5.2排样方式的选择11 5.3计算冲裁力的公式14 5.3.1总冲裁力的计算14 5.3.2卸料力、推件力的计算15 表5-2卸料力、推件力和顶件力系数15 5.3.3模具总冲裁力16 5.3.4初选压力机16 5.3.5压力中心的确定17 6刃口尺寸的计算18 6.1冲裁间隙的确定18 6.2冲裁刃口计算19 6.3弯曲尺寸的计算20 7主要零部件的设计22 7.1凹模设计22 7.1.2凹模刃口结构形式的选择22 7.1.3凹模精度与材料的确定22 7.1.4凹模外形的确定22 7.2凸模的设计24 7.2.1凸模结构的确定24 7.2.2凸模尺寸计算24 7.3定位零件的选用25 7.4卸料装置的选定25 7.4.1卸料装置的选用25 7.4.2卸料螺钉的选用26 7.4.3卸料板的作用26 7.4.4卸料板材料的选择26 7.4.5卸料橡胶的选用26 7.6上下模座的选用27 7.7连接及固定零件的选用28 7.7.1螺钉与销钉的选用28 7.8.2模柄的选用29 7.7.3凸模固定板的设计29 7.7.4垫板的设计30 8冲压设备的校核与选定31 结论32 致谢33 参考文献34