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洛阳理工学院毕业设计（论文）I摩托车启动电机壳体冲压工艺及模具设计摘要本次设计的零件为摩托车启动电机壳体，其结构为带凸缘阶梯形圆筒件。壳体采用的材料20钢及1.5mm厚度保证了足够的强度和刚度。该零件外形基本对称，材料是适于制造高变形性能的钢材。本次设计首先通过对零件的结构的分析，知道了制造这一零件需要落料、拉深等工序，然后制定多种冲压工艺。再动过对多种冲压工艺进行比较，选取最好的方案来进行模具设计。在模具设计过程中，最重要的是模具结构的设计。在进行模具结构设计的过程中，对各工艺过程进行分析及计算，确定模具各部分的尺寸。并通过计算各工序所需要的力，选择合适的压力机。在整个模具设计过程中，通过导师的指导和提供的资料，在与同学的讨论中，我完成了模具装配图及零件图的绘制。再设计过程中，通过查阅模具相关的工具书和模具图册，我对模具结构和设计有了更深刻的认识。关键词：摩托车启动电机壳体，落料，拉深，冲压工艺洛阳理工学院毕业设计（论文）IIMOTORCYCLESTARTERMOTORHOUSINGSTAMPINGPROCESSANDDIEDESIGNABSTRACTThecomponentdesigningisthemotorcyclestartermotorhousing,andthestructureofitistheflangedsteppedcylindricalmember.Shellmaterialsuse20steeland1.5mmthicknesstoensuresufficientstrengthandstiffness.Thebasicshapeofthecomponentissymmetrical,andthematerialissuitableforthemanufactureofhighdeformationpropertiesofsteel.Thedesignofthefirstistoknowthatmanufacturingthepartsneedblanking,drawingandotherprocessestotheanalysistopartsofthestructure,andthendevelopavarietyofstampingprocess.Thenacomparisonofavarietyofstampingprocess,selectthebestschemefordiedesign.Inthemolddesignprocess,themostimportantthingisthedesignofdiestructure.Intheprocessofdiestructuredesign,theprocessanalysisandcalculationisneeded.besides,weneeddeterminethepartsofthediesize.Andthroughthecalculationoftheforceneededforeachstep,choosetherightmachine.Inthemolddesignprocess,throughthementorandtheinformationprovided,anddiscussionswiththestudents,Ifinisheddrawingdieassemblydrawingandpartdrawing.Thenthedesignprocess,toolanddiealbumthroughaccesstomold,Ihaveamoreprofoundunderstandingofthediestructureanddesign.KEYWORDS:Motorcyclestartermotorhousing，Blanking，Drawing，Stampingprocess洛阳理工学院毕业设计（论文）III目录前言................................................................................................1第1章零件结构及技术要求...........................................................3第2章零件的冲压工艺性分析.......................................................42.1零件的工艺性分析...............................................................42.2产品尺寸精度、粗糙度、断面质量分析............................42.3冲压工序的确定...................................................................52.4毛坯尺寸及拉深次数的确定................................................52.4.1毛坯尺寸D计算........................................................52.4.2拉深次数确定.............................................................62.5排样形式及材料利用率.......................................................82.5.1排样形式的确定.........................................................82.5.2材料利用率的计算...................................................9第3章落料拉深复合模具的设计.................................................113.1工序压力计算.....................................................................113.1.1落料工序压力计算...................................................113.1.2拉深工序...................................................................113.2选择压力机.........................................................................123.3模具结构类型及形式的选择和设计..................................123.4模具工作部分刃口尺寸计算..............................................133.4.1落料模刃口尺寸.......................................................133.4.2拉深模工作部分尺寸计算........................................143.5模具主要零件尺寸的设计.................................................153.5.1落料凹模的设计.......................................................153.5.2凸凹模设计...............................................................163.5.3拉深凸模设计...........................................................173.6模具其他零件的设计.........................................................183.6.1模架尺寸的确定.......................................................183.6.2定位零件...................................................................18洛阳理工学院毕业设计（论文）IV3.6.3卸料装置...................................................................193.6.4推件、顶件装置.......................................................203.6.5凸模固定板的设计...................................................203.6.6压边装置的设计.......................................................20第4章二次拉深模具的设计.........................................................214.1二次拉深压力的计算.........................................................214.2压力机的选用.....................................................................214.3模具结构类型及形式的选择和设计..................................224.4模具工作部分刃口尺寸计算..............................................224.5模具主要零件的设计.........................................................234.5.1拉深凹模的设计.......................................................234.5.2拉深凸模的设计.......................................................244.6模具其他零件的设计.........................................................254.6.1模架尺寸的确定.......................................................254.6.2导向装置...................................................................254.6.3垫板的设计...............................................................26第5章模具的装配与调整.............................................................275.1冲模装配的基本要求.........................................................27结论..............................................................................................29谢辞.......