拉钩的冷冲模设计说明书[带图纸].doc

I嘉兴学院南湖学院（2010届）毕业论文（设计）题目拉钩的冷冲模设计姓名潘晓慧专业机械设计制造及其自动化班级机械N061学号2006456790601指导教师王殿梁导师学科材料加工工程导师职称副教授嘉兴学院南湖学院教学事务管理中心年月日II摘要首先分析了拉钩的冲压成形工艺，确定了拉钩的冲压成形工艺方案，采用连续冲压的方式。设计了模具的凸模，凹模及部分零部件，对拉钩进行冲压后，选择采用下顶出件顶出落料的方式。最终确定了模具的整体结构，再利用autoCAD绘制出装配图以及零件图。关键词拉钩，连续模，压力中心IIIThedesignoftheHookstampingdieABSTRACTFirstlyanalyzedthestampingprocessofthepullhook,determinesthestampingprocessschemeofthepullhook,bywayofstamping.Designthepunch,cavityandpartsandcomponents.Afterstampingthepullhook,choosefromaroofbynextChulamaterials.Determinetheoverallstructureofthemouldultimately.DrawouttheassemblyanddetaildrawingsbyautoCAD.KeywordsHook,progressivedie,centerofpressureIV目录摘要..............................................................................................................................................................IIABSTRACT..................................................................................................................................................III第一章绪论...................................................................................................................................................11.1课题意义..........................................................................................................................................11.1.1模具工业的分类...................................................................................................................11.1.2模具工业的地位...................................................................................................................11.1.3我国模具工业的现状...........................................................................................................21.2现代模具的发展前景......................................................................................................................21.3课题研究方法与计划......................................................................................................................31.3.1主要任务与目标...................................................................................................................41.3.2主要内容与基本要求...........................................................................................................4第二章冲裁件的工艺性分析.......................................................................................................................52.1冲裁件形状和尺寸..........................................................................................................................52.2冲裁件悬臂的最小尺寸..................................................................................................................52.3自由凸模冲孔的最小尺寸..............................................................................................................52.4冲裁件的精度与粗糙度..................................................................................................................62.5排样..................................................................................................................................................72.5.1排样方式...............................................................................................................................72.5.2材料的利用率.......................................................................................................................82.6搭边..................................................................................................................................................82.7凸、凹模间隙..................................................................................................................................82.8凸、凹模刃口尺寸及公差..............................................................................................................92.8.1冲裁模刃口尺寸计算的原则...............................................................................................92.8.2冲裁模凸模、凹模刃口尺寸计算.......................................................................................92.9冲裁力的计算公式........................................................................................................................102.9.1冲裁力的计算.....................................................................................................................102.9.2顶件力合卸料力的计算.....................................................................................................112.9.3总冲裁力计算.....................................................................................................................112.10压力中心的确定..........................................................................................................................112.11凸模设计......................................................................................................................................122.11.1圆形凸模的结构形式.......................................................................................................122.11.2凸模的固定方法...............................................................................................................13V2.12凹模设计......................................................................................................................................132.12.1凹模刃口形式...................................................................................................................132.12.2凹模的外形尺寸...............................................................................................................132.12.3凹模的固定方式...............................................................................................................142.13卸料装置......................................................................................................................................152.14连接零件......................................................................................................................................152.14.1模柄...................................................................................................................................152.14.2模座...................................................................................................................................16第三章冲压模具的总体设计.....................................................................................................................173.1总装配图........................................................................................................................................173.2冲压设备的选择.............................................................................................................................183.3模具的工作过程.............................................................................................................................19总结..............................................................................................................................................................20参考文献.................................................................................................................................................21