机械5

托架冲压模具设计 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。 本次设计是对托架进行冲压模具设计，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；托架；连续模 Abstract There are three types of stampi
ng dies: si
ngle process die,compou
nd die a
nd progressive die.I
n this desig
n,progressive die is i
nvolved,a
nd progressive die is also called co
nti
nuous die.Its defi
nitio
n is to arra
nge the processes i
n a set of dies accordi
ng to a certai
n order.Bysetti
ng the feedi
ng mode a
nd positio
ni
ng mode,the die positio
nwill move forward each time Move o
ne step to fi
nish bla
nki
ng a
nd formi
ng.The adva
ntage of progressive die isveryobvious,it ca
n dealwith differe
nt types of processes,whether it is pu
nchi
ng bla
nki
ng or be
ndi
ng drawi
ng,it ca
n be combi
ned a
nd arra
nged i
n progressive die to decompose the fi
nal set of die to complete,which is a co
nditio
n adva
ntage that other die types ca
n
not have.With the co
nti
nuous developme
nt of society,today'sworkpiece dema
nd is higher a
nd higher.Naturally,the requireme
nts for the structure a
nd efficie
ncyof stampi
ng die parts are also higher a
nd higher.I
n the case of e
nsuri
ng high productio
n efficie
ncyof die products,it ca
n also effectivelyguara
ntee the qualityof die products,which also leads to the high proportio
n of progressive die i
n die productio
n. This desig
n is to desig
n the stampi
ng die for the bracket.Firstly,a
nalyze the process of theworkpiece required bythe task to determi
newhether theworkpiece ca
n meet the basic stampi
ng process requireme
nts.For be
ndi
ng a
nd deep drawi
ng parts,it is
necessaryto calculate the size of the be
ndi
ng a
nd deep drawi
ng parts of theworkpiece before the stampi
ng die desig
n,a
nd the
n desig
n the layout of theworkpiece a
nd calculate the pressure Force ce
nter,cutti
ng edge dime
nsio
n,pu
nchi
ng pressure,etc.the
n,desig
n die parts such as pu
nch die a
nd co
ncave die fixi
ng plate,etc.for guide pillar guide sleeve die sha
nk,upper a
nd lower die seats,a
nd all ki
nds of rou
nd pi
n faste
ni
ng screws,etc.,wewill use a large
number of stampi
ng die sta
ndard parts to desig
n,a large
number of use of sta
ndard parts is the tre
nd of e
nterprise or i
ndividual desig
n,
not o
nlyIt ca
n o
nlyimprove the efficie
ncyof desig
n a
nd reduce the cost of mold a
nd improve the qualityof mold. Fi
nally,usi
ng two-dime
nsio
nal software to drawthe die assemblydrawi
ng a
nd parts,a
nd orga
nize them i
nto i
nstructio
ns. Keywords: stampi
ng die; bracket; co
nti
nuous die 目录 摘要I Abstract 1 1绪论5 1.1概述5 1.2选题背景及意义6 2冲裁件的结构工艺性分析7 2.1制件简介7 2.2材料分析7 2.3零件结构8 3确定工艺方案及模具的结构形式9 3.1冲裁方案的分析及确定9 3.2方案种类9 3.3方案的比较与分析9 4模具总体结构设计11 4.1模具类型的选择11 4.2送料方式的选择11 4.3定位方式的选择11 4.4卸料、出件方式的选择11 4.5标准模架和导向方式的选择12 5工艺参数计算14 5.1毛坯尺寸参数的计算14 5.1.1弯曲展开计算14 5.1.2排样方式的选择15 5.1.3搭边值的确定16 5.1.4材料利用率的计算17 5.2计算冲裁力的公式18 5.2.1总冲裁力的计算18 5.2.2卸料力、推件力的计算19 5.2.3模具总冲裁力20 5.2.4弯曲力的计算20 5.2.4模具的总冲压力21 5.2.4初选压力机21 5.2.5压力中心的确定22 6刃口尺寸的计算24 6.1冲裁间隙的确定24 6.2刃口尺寸的依据与法则及计算25 7主要零部件的设计28 7.1凹模设计28 7.1.2凹模刃口结构形式的选择28 7.1.3凹模精度与材料的确定28 7.1.4凹模外形的确定28 7.2凸模的设计30 7.2.1凸模结构的确定30 7.3定位零件的选用30 7.4卸料装置的选定31 7.4.1卸料装置的选用31 7.4.2卸料螺钉的选用31 7.4.3卸料板的作用31 7.4.4卸料板材料的选择31 7.4.5卸料橡胶的选用31 7.5上下模座的选用33 7.6连接及固定零件的选用34 7.6.1螺钉与销钉的选用34 7.6.2模柄的选用34 7.6.3凸模固定板的设计34 7.6.4垫板的设计35 8冲压设备的校核与选定37 8.1冲压设备的校核37 8.2冲压设备的选用37 9模具的总体结构设计38 结论39 致谢40 参考文献41