机械5

有凸缘圆筒形冲压件模具设计 摘要 简短介绍了我国模具行业发展状况，以及在当下模具行业情况，并且对国内外模具行业发展现状加以分析，从而对我国模具行业与国外模具行业进行了综合比较提出差距所在。同时介绍了模具的类型和主要功能。综合阐述对镶套落料拉深模具进行设计，首先对工件进行工艺分析，对拉深特点拉深变形过程进行技术分析。在设计之前先确定修边余量和毛坯尺寸是否需要使用压边圈。其次对拉深模具进行总体设计，了解拉深模具结构、分类，选择压边装置。然后确定工作部分结构参数，确定拉深系数及工序尺寸。计算凸模圆角半径、凹模圆角半径、压边力、压边圈尺寸、拉深力、卸料力、拍样计算，并计算压力中心对压力机进行选择。最后选择模具主要零部件及结构，对模具材料、模架进行选择，计算凸模长度、凹模高度和壁厚、凸模固定板尺寸以及校核凸、凹模强度。同时设计选择其他零部件，确定模具闭合高度，对拉深模具进行安装调试。 关键词：模具；冲压；凸模圆角半径；尺寸公差；间隙；拉深力；凸、凹模 Abstract A brief i
ntroductio
n to Chi
na's mold i
ndustry developme
nt, a
nd i
n the mold i
ndustry, a
nd the curre
nt situatio
n of the developme
nt of mold i
ndustry are a
nalyzed,which are compared to the gap i
n the mould i
ndustry i
n our cou
ntry a
nd foreig
n mould i
ndustry. At the same time i
ntroduced a
nd mai
n fu
nctio
n mold type. A comprehe
nsive set of i
nsert falls desig
n drawi
ng die, first through the process a
nalysis of theworkpiece, a
nalyzes characteristics of drawi
ng deformatio
n process of drawi
ng. I
n the desig
n before trimmi
ng allowa
nce a
nd bla
nk size is required the use of bla
nk holder. Seco
ndly, thewhole desig
n of the drawi
ng die, drawi
ng die, u
ndersta
nd the classificatio
n, selectio
n of the edge pressi
ng device. The
n determi
ne the structure parameters, determi
ne the drawi
ng coefficie
nt
nd the process dime
nsio
ns. Calculatio
n of pu
nch radius, die radius, the gap, co
nvex, co
ncave die size tolera
nce, BHF, the edge pressi
ng ri
ng size, drawi
ng force, strippi
ng force, shoot calculatio
n, a
nd calculatio
n of the pressure ce
nter of press. The fi
nal choice of mai
n parts of die a
nd the structure, the choice of mold materials, mold, pu
nch le
ngth calculatio
n, die height a
nd thick
ness, pu
nch plate size a
nd check the co
nvex, co
ncave die stre
ngth. At the same time, other parts desig
n, determi
ne the height of the closed mold, i
nstallatio
n a
nd commissio
ni
ng of the drawi
ng die. Keywords： stampi
ng; pu
nch radius; dime
nsio
nal tolera
nces; cleara
nce; drawi
ng force; the co
nvex, co
ncave 目录 摘要1 1.引言3 2.冲裁件的工艺性分析6 2.1.冲裁件的结构工艺性6 2.1.1.冲裁件的形状6 2.1.2.冲裁件的尺寸精度6 3.制件冲压工艺方案的确定7 3.1.冲压工序的组合7 3.2.冲压顺序的安排7 4.制件排样图的设计及材料利用率的计算8 4.1.展开尺寸的计算8 4.2.制件排样图的设计9 4.2.1.搭边与料宽10 4.3.材料利用率的计算11 5.确定总冲压力和选用压力机及计算压力中心16 5.1.落料拉伸模16 5.2.压力中心的计算17 5.3.压力机的选用17 6.凸、凹模刃口尺寸计算19 6.1.拉伸模19 6.2.落料凸、凹模刃口尺寸20 6.2.1.计算原则20 6.2.1.凸模和凹模配合加工21 7.模具整体结构形式设计22 8.模具零件的结构设计23 8.1.落料凹模的设计23 8.2.拉伸凸模的设计23 8.3.凸凹模的设计24 9.模具的总装配26 设计小结27 参考文献28