全套设计（图纸）加扣扣 194535455
2015届湖北汽车工业学院毕业设计（论文）
摘要
论文主要是研究越野车后围密封梁修边冲孔模具设计。它侧重于修边冲孔模具的结 构设计和工艺计算分析，使用AutoCAD绘制二维工程图，运用Pro/e软件进行三维数字
化建模和模具的虚拟装配，以及装配体的干涉分析。
本文对模具国内外行情和发展趋势做了一定的分析。其中对其主要零部件的结构、 功能要求作了详细说明；对工艺方案的经济性和技术可行性进行了分析比较；对模具进 行了受力分析；对主要零部件的工艺路线做了分析。在整个修边冲孔模的设计过程中， 严格按照零件的工艺要求，综合考虑零件生产要求，来缩短零件加工周期，提高零件加 工精度和质量，从而实现产业利润最大化。
关键词：修边冲孔模；模具设计；虚拟装配；干涉分析
全套设计（图纸）加扣扣 194535455
2015届湖北汽车工业学院毕业设计（论文）
Abstract
Thepaper mainlyisthe studyof the SUVdefender seal beam trimmingpunching
mold.It focuses onthetrimmingpunchingdiestructuredesign andprocess calculationand
analysis,usingAutoCAD drawing2D engineering drawing,use Pro/Esoftwarefor 3Ddigital
modelingandvirtual assemblyof the mold, andtheanalysis of the assemblyinterference.
In this paper,the moldmarket anddevelopmenttrendathomeandabroadfor
analysis.Oneof the mainparts of illustrates indetail thestructure,function requirements;The
economy andtechnicalfeasibilityof theprocess areanalyzed;Thestress analysiswas carried
outonthemold;Analyzed theprocess of maincomponents.Throughout thetrimmingof the
punchingdiedesignprocess,instrict accordancewiththerequirements of partsis
considering parts productionrequirements andtoshortentheprocessingcycle,improve
machiningprecisionand qualityof parts,soas torealizeindustryprofitmaximization.
Keywords: Trimmingpunchingdie;Diedesign;Virtualassembly;Interferenceanalysis
全套设计（图纸）加扣扣 194535455
2015届湖北汽车工业学院毕业设计（论文）
目录
第一章 概论..............................................................................................................................1
1.1冲压模具的发展与现状.................................................................................................1
1.1.1 冲压模具工业发展概况........................................................................................1 1.1.2 冲压模具工业未来前景......................................................................................1
1.2 CAD在模具设计中的应用.............................................................................................2
1.3 Pro/e在模具设计中的应用.........................................................................................3
第二章 工艺分析和模具结构形式设计.................................................................................5
2.1 工艺分析......................................................................................................................5
2.1.1 零件的形状和尺寸精度要求................................................................................5 2.2 模具结构形式设计........................................................................................................6 2.2.1 零件加工分析........................................................................................................6 2.2.2 模具结构形式设计................................................................................................6 第三章 工艺计算......................................................................................................................8 3.1 冲压力的计算................................................................................................................8 3.1.1冲裁力的计算.........................................................................................................8
3.1.2 卸料力、推件力的计算........................................................................................8 3.1.3 降低冲裁力的方法................................................................................................9 3.2 计算压力中心................................................................................................................9 3.2.1 确定压力中心的目的............................................................................................9 3.2.2 压力中心的计算方法..........................................................................................10 第四章 冲压设备选择............................................................................................................10 4.1冲压设备类型的选择...................................................................................................11
4.1.1常用机械压力机的选择.......................................................................................12
4.2冲压设备规格的选择...................................................................................................13
4.2.1曲柄压力机技术参数...........................................................................................13
4.2.2曲柄压力机规格的确定.......................................................................................13
全套设计（图纸）加扣扣 194535455
2015届湖北汽车工业学院毕业设计（论文）
4.2.3选择曲柄压力机型号...........................................................................................14
第五章 模具结构设计............................................................................................................14 5.1 结构设计可行性分析..................................................................................................16 5.2模具闭合高度分析.......................................................................................................17
5.2.1闭合高度概述.......................................................................................................17
5.2.2估算模具闭合高度...............................................................................................17
第六章 模具主要零部件设计................................................................................................18 6.1 凸模、凸凹模和凹模镶块设计..................................................................................19 6.1.1计算冲裁间隙.......................................................................................................19
6.1.2凸模、凹模、凸凹摸刃口尺寸计算...................................................................20
6.1.3 凸模结构设计......................................................................................................21 6.1.4 凹模结构设计......................................................................................................23 6.1.5凸、凹模最终确定结构.......................................................................................25
6.2 弹簧的选择..................................................................................................................26 6.2.1 弹簧选择原则......................................................................................................26 6.2.2压料弹簧的选择...................................................................................................27
6.3螺钉的选择...................................................................................................................28
6.4导向零件的选择...........................................................................................................28
6.5 支撑零件选择..............................................................................................................29 6.5.1 模架......................................................................................................................29 6.5.2上、下模座选择...................................................................................................30
6.6废料切刀.......................................................................................................................30
6.7 压料板..........................................................................................................................31 第七章 模具工程图纸及三维建模........................................................................................32 7.1绘制二维工程图...........................................................................................................33
7.1.1 模具要求..............................................................................................................33 7.1.2 技术要求..............................................................................................................33 7.1.3 图纸绘制..............................................................................................................34 7.2三维实体建模...............................................................................................................34
7.2.1 三维实体建模的意义..........................................................................................34
全套设计（图纸）加扣扣 194535455
2015届湖北汽车工业学院毕业设计（论文）
7.2.2 三维建模中应注意的问题..................................................................................35 7.2.3 总装配及干涉分析..............................................................................................35 ............................................................................................................................
第八章 结论 36
致 谢........................................................................................................................................37 .................................................................................................................................. 参考文献 38