机械5

摘要 垫片冲压模的设计，外形结构为方形，夹角处为0.5mm圆角过度，工件为对称的结构。模具的设计的设计先从工件的工艺结构出发，根据工件技术图纸要求和形状来确定模具的设计方案，进步一确定模具制造精度等级，和排样设计从而确定出模具的类型结构。从实际生产的角度出发，为了节约模具制造成本，提高产品生产效率，保证工件的生产精度，该工件的冲裁模具设计采用复合模具冲裁。在模具设计前主要查找工件图纸中未标注公差的尺寸公差，根据尺寸公差来确定模具制造的精度，经过排样分析以后，开始进行模具的结构设计，计算模具的闭合高度、卸料力、冲裁力、冲裁间隙、模具装配配合间隙、凸模高度、压力中心、模具总压力，根据总冲压力选择冲压设备；所有的设计方案确定以后开始绘制模具草图、装配图、零件图、编写技术要求、设计说明书。 关键词：复合模具，冲裁力，冲裁间隙，压力中心 ABSTRACT The desig
n of the stampi
ng die of the gasket is square, a
nd the a
ngle of the sa
ndwich is 0.5mm's rou
nd a
ngle a
nd theworkpiece is symmetrical. The desig
n of the mould is based o
n the process structure of theworkpiece, the desig
n pla
n is determi
ned accordi
ng to the requireme
nt a
nd shape of theworkpiece's tech
nical drawi
ngs, a
nd the accuracy a
nd grade of the mould are determi
ned, a
nd the type a
nd structure of the die are determi
ned. From the perspective of actual productio
n, i
n order to save the cost of mold ma
nufacturi
ng, improve the efficie
ncy of productio
n a
nd e
nsure the accuracy ofworkpiece productio
n, the bla
nki
ng die desig
n of theworkpiece adopts compou
nd die bla
nki
ng. Size tolera
nce tolera
nce is
not marked i
n the mold desig
n for mai
nworkpiece drawi
ngs, to determi
ne the mould ma
nufacturi
ng precisio
n accordi
ng to the dime
nsio
nal tolera
nces, after layout a
nalysis, structure desig
n of die a
nd start, shut height a
nd calculatio
n of mould u
nloadi
ng, bla
nki
ng force, bla
nki
ng cleara
nce, die assembly cleara
nce, co
nvex die pressure ce
nter, mould height, total pressure, total pressure accordi
ng to stampi
ng equipme
nt selectio
n; desig
n all determi
ned to start drawi
ng sketches, mold assembly drawi
ng a
nd part drawi
ng, preparatio
n of tech
nical requireme
nts, desig
n specificatio
ns. Keywords: compou
nd die, bla
nki
ng force, bla
nki
ng gap, pressure ce
nter 目录 1前言1 1.1冷冲压模具概述和发展1 1.2当前模具的技术水平1 2冲压件工艺分析2 2.1工件材料分析2 2.2工件结构形状分析2 3冲压工艺分析与方案确定3 3.1冲裁工艺方案的分析3 3.2冲裁工艺方法的选择3 4模具总体结构4 4.1模具类型的选择4 4.2定位方式的选择4 4.3送料方式的确定4 4.4出件方式的确定4 4.5模架结构和导向装置的选择4 5工艺参数计算6 5.1排样方式的选择6 5.1.1搭边值的确定7 5.1.2材料利用率的计算8 5.2冲压力的计算9 5.2.1冲裁力的计算9 5.2.2卸料力计算9 5.2.3总冲压力的计算10 5.2.4初选压力机10 5.2.5压力中心的确定11 6刃口尺寸的计算13 6.1冲裁间隙的确定13 6.2刃口尺寸的计算及依据与法则14 7主要零部件设计19 7.1凹模、凸凹模设计19 7.1.1凹模、凸凹模刃口结构形式的选择19 7.1.2凹模、凸凹模精度与材料的确定20 7.1.3凹模外形尺寸的确定20 7.2凸模的设计22 7.2.1凸模结构的确定22 7.2.2凸模、凸凹模高度的确定22 7.2.3凸模材料的确定23 7.3卸料装置的设计23 7.3.1卸料板的外形设计23 7.3.2卸料板材料的选择24 7.3.3卸料板的结构设计24 7.3.4卸料板整体精度的确定24 7.3.5弹性元件的设计25 7.4固定板的设计25 7.5模柄选择25 8冲压设备的校核与选定27 8.1冲压设备的校核27 8.2压力机的选择27 结论29 参考文献30