U形盖落料模具设计论文.docx

U形盖落料模具设计论文.docx

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U形盖落料模具设计论文

中文摘要

目前，我国经济仍处于高速发展阶段，国际上经济全球化发展趋势日趋明显，这为我国模具工业高速发展提供了良好的条件和机遇。

对冲压生产而言，单工位模具结构单一，生产效率低，而且钣金零件不能过于复杂，否则就需要多副单工位模具才能实现。

如果采用级进模进行冲压生产，就可以改变这些缺点。

多工位级进模是在普通级进模的基础上发展起来的一种高精度、高效率、长寿命的模具，是技术密集型模具的重要代表，是冲模发展方向之一。

这种模具除进行冲孔落料工作外，还可根据零件结构的特点和成形性质，完成压筋、冲窝、弯曲、拉深等成形工序，甚至还可以在模具中完成装配工序。

冲压时，将带料或条料由模具入口端送进后，在严格控制步距精度的条件下，按照成形工艺安排的顺序，通过各工位的连续冲压，在最后工位经冲裁或切断后，便可冲制出符合产品要求的冲压件。

为保证多工位级进模的正常工作，模具必须具有高精度的导向和准确的定距系统，配备有自动送料、自动出件、安全检测等装置级进模的特点是生产效率高，生产周期短，占用的操作人员少，非常适合大批量生产。

级进模设计的要点之一就是毛坯排样，排样方案对材料的利用率、冲压加工的工艺性以及模具的结构和寿命等有着显著的影响。

本次的毕业设计课题来源于工厂的工作实践,模具结构也较为常见，对于我们初学者是一种锻炼。

在设计该模具的同时总结了以往模具设计的一般方法、步骤，模具设计中常用的公式、数据、模具结构及零部件。

把以前学过的基础课程融汇到这次毕业设计中来。

在这次毕业设计中同时还用到了CAD、UG等软件。

由于实际经验和理论技术有限，设计的错误和不足之处希望各位老师批评指正。

关键词：

级进模、排样、工艺分析、模具制造

ABSTRACT

Atpresent,China'seconomyisstillinstageofrapiddevelopment,theinternationaltrendofeconomicglobalizationisincreasinglyclearthatrapiddevelopmentofChina'smoldindustrytoprovidegoodconditionsandopportunities.

Forstamping,thesingle-stationsinglediestructure,lowproductivity,andsheetmetalpartscannotbetoocomplicated,orneedmoresingle-stationdiesvicecanbeachieved.Iftheuseofprogressivediestampingproduction,youcanchangetheseshortcomings.Multi-positionprogressivedieprogressivedieingeneraldevelopedonthebasisofahighprecision,highefficiency,longlifeofthemold,themoldisanimportantrepresentativeoftechnology-intensive,isoneofthedevelopmentdie.Thepunchingdieblankingadditiontothework,butalsothecharacteristicsofpartstructurebasedonthenatureandshape,completebeading,punchinghole,bending,deepdrawingformingprocesscanevenbecompletedinthemoldassemblyprocess.Stamping,itwillbewiththematerialorstripmaterialssentfromthemoldaftertheentrance,stepinthestrictlycontrolledconditions,accuracy,formingprocessinaccordancewiththeorderarrangedbythecontinuouspressingofthestation,atthelaststation,orbypunchingcutoff,thesystemcanbewashedtomeettherequirementsofstampingproducts.Toensuremulti-positionprogressivediework,diemusthaveahigh-precision-orientedandaccuratefixedpitchsystem,equippedwithautomaticfeeding,automaticparts,safetytestingandotherdevicesischaracterizedbyprogressivedieforhighproductionefficiency,productionshortcycle,theoperatortakeslesswellsuitedformassproduction.ProgressiveDieDesignisoneofthemainpointsoftheroughlayout,layoutprogramontheutilizationofmaterials,stampingandmoldprocessingtechnologyofthestructureandlongevityhaveasignificantimpact.

Thistime,thegraduationprojectfromthepracticefactory,themoldstructureisalsomorecommon,isanexerciseforusbeginners.Inthedesignofthemolddiedesignweresummarizedinthepastthegeneralmethodsandprocedurescommonlyusedinmolddesignformula,data,diestructureandcomponents.Thebasisofpreviouslylearnedtointegratethegraduatedesignprogramsinthepast.InthisgraduationdesignisalsousedintheCAD,UGandothersoftware.

Becausethelimitedpracticalexperienceandtheoreticaltechniques,designerrorsanddeficiencieshopethatteacherscriticizedthecorrection.

Keywords:

Progressivedie,layout,processanalysis,moldmanufacturing

引言·························································1           

第一章 冲压件及其工艺分析···································4

1.1冲压件的工艺分析········································5

1.2工件的精度和断面粗糙度···································5

1.3冲压件工艺方案的确定··········································5

第二章排样设计及工艺参数的计算······························6

2.1排样方式的确定··················································6

2.2材料利用率的计算···············································7

2.3提高材料利用率的方法··········································8

2.4 冲压力的计算···················································8

2.5压力中心的确定及相关计算·······································9

2.6模具凸凹模的刃口尺寸计算·······································10第三章工作零件结构设计及固定·····································11

3.1凸凹模的结构设计···············································11

3.2模具总体设计···················································13

3.3凹﹑凸模的线切割加工工艺·····································15

3.4模具的装配······················································17

3.4.1模具的装配工艺················································17

3.4.2模具总装图····················································17

3.5冲压设备选定····················································18

总结·································································20

致谢································································21

参考文献·····························································22

第一章冲压件及其工艺分析

工件名称：

U形盖落料

工件简图：

如图所示

生产批量：

大批量

材料：

不锈钢1cr18Ni9Ti

材料厚度：

1mm

制件精度：

IT11级

1.1冲压件的工艺分析：

此料板只有冲孔和落料两个工序，材料为不锈钢1cr17，具有良好的冲压性能，适合冲裁。

工件结构相对简单，只有中间方形四角带圆弧的孔，孔与边缘之间的距离也满足要求（最小壁厚为24.57mm），精度为IT11级，