机械5

汽车挡泥板复合冲压模设计 摘要 模具是工业生产中重要的工艺装备，是国民经济各部门发展的重要基础之一。复合模是一种复杂、精密的冲压模具，它具有高效率、高精度和高寿命等优越性，适用于各种冲压行业的自动化生产。复合模涉及冲压成形理论、冲压工艺、模具设计与制造以及模具材料中的许多关键技术。板料的冲压成型是一种重要的金属加工方式，被广泛地应用工业生产领域中。模具是工业生产的基础工艺装备。用模具生产制件所具备的高精度、高复杂程度、高一致性、高生产率和低消耗,是其他加工制造方法所不能比拟的。 对汽车挡泥板进行冲裁工艺分析并确定冲裁方案，说明了模具主要零部件的设计和选用。以Solidworks为平台，利用三维参数化设计与建模技术，对汽车挡泥板的冲压模具进行三维参数化造型设计，可以根据需要改变模具的尺寸；进行虚拟装配，可以直观地观察和分析模具的结构以及零件的相互位置关系；加快了产品开发速度，提高了产品开发效率，缩短了产品开发周期。 关键词：Solidworks；挡泥板；冲压模具设计 Abstract Mould& Die is importa
nt tech
nical equipme
nt i
n i
ndustrial productio
n. It is also o
ne of the most importa
nt developme
ntal fou
ndatio
ns for all departme
nts of cou
ntry eco
nomy. The progressive die is a ki
nd of complex a
nd precise formi
ng die. It possesses ma
ny adva
ntages such as high efficie
ncy, accuracy a
nd lo
ng life. The sheet metal stampi
ng formi
ng is importa
nt metal processi
ng methods have bee
nwidely used i
ndustrial productio
n areas. Mold is the basis for i
ndustrial productio
n processes a
nd equipme
nt. Mold productio
n ofwork pieces by the available high-precisio
n, high-complexity, high co
nsiste
ncy, high productivity a
nd low co
nsumptio
n, other ma
nufacturi
ng methods could be compared. Bla
nki
ng process a
nalysis of fe
nder is completed a
nd bla
nki
ng proposal is decided, a
nd desig
ni
ng a
nd selecti
ng of mai
n parts of die are showed. Based o
n Solidworks, three-dime
nsio
nal parameterizatio
n moldi
ng desig
ni
ng for fe
nder is completedwith tech
nology of three-dime
nsio
nal parameterizatio
n desig
ni
ng a
nd model buildi
ng, a
nd dime
nsio
ns of die ca
n be cha
nged as required; byvirtual assembly, structure of die a
nd relatio
n of mutual alig
nme
nt ca
n be observed a
nd a
nalyzed directly; the product rate of developme
nt is accelerated a
nd product developme
nt cycle is shorte
ned. Keywords：Solidworks；Fe
nder；Desig
ni
ng of die 目录 引言1 1工件的工艺分析2 1.1分析工件的使用材料及特性2 1.2工件结构分析2 1.3工件的尺寸精度、粗糙度、断面质量分析3 1.3.1尺寸精度3 1.3.2冲裁断面质量3 2模具的基本类型和机构分析3 2.1工艺方案拟定3 2.2模具结构形式的确定4 3工件的工艺计算及冲裁设备的确定5 3.1排样尺寸及材料利用率5 3.1.1排样尺寸5 3.1.2材料利用率6 3.2各工序压力计算7 3.2.1冲裁方法7 3.2.2冲裁力的计算7 3.2.3卸料力与推件力的计算9 3.2.4总压力计算10 3.3压力机选择11 3.4计算压力中心11 3.5冲裁间隙12 3.5.1冲裁间隙对冲件质量的影响12 3.5.2对模具寿命的影响13 3.5.3对冲裁力及卸料力的影响14 3.5.4合理间隙选用15 3.6模具刃口尺寸计算16 3.6.1凸、凹模刃口尺寸计算原则16 3.6.2凸、凹模尺寸计算17 4模具零件选材和结构设计20 4.1模具选材20 4.2模具制造特点、原则22 4.3凹模结构设计23 4.4冲孔凸模长度及校核25 4.5凸凹模结构设计27 4.6定位零件27 4.7卸料与出件装置28 4.8模架30 4.9其他支承与固定零件31 4.10模具总装图与明细表31 5模具零件加工工艺33 5.1工艺编制的基本原则与注意事项33 5.2模具主要零件加工工艺过程34 结论38 谢词39 参考文献40 附录41