冷冲拉模具设计

毕业论文题目轴承架的冷冲压拉深工艺及模具设计学生姓名XXX学号XXXXXXXXXXXXX入学时间2012年春专业机械设计及其自动化方向指导教师XXX试点单位重庆广播电视大学2015年3月28日广播电视大学人才培养模式改革和开放教育试点毕业设计(论文)指导任务书毕业论文题目轴承架的冷冲压拉深工艺及模具设计学生姓名XXX专业机械设计及其自动化方向指导教师XXX职称毕业论文研究的内容及要求：内容：依据所拟题目和提纲进行写作，按照提出问题——分析问题——解决问题的思路来写，重点突出，注意理论联系实际。要求：独立写作，不得抄袭。论文结构合理，条理清楚，论证充分，理论联系实际，格式规范。字数在7000—10000字。毕业论文写作进度计划：1、期限：自年月日起至年月日2、具体进度安排：时间完成内容广泛收集资料，并写作题目、提纲按老师审核的题目提纲写作初稿初稿被初审后根据指导教师意见进行修改完成二稿二稿被指导教师再次审查进行内容或结构的修改完成三稿论文最后修改完成后审查文本是否规范并作最后修订与装订工作毕业设计(论文)教师指导记录表重庆广播电视大学试点单位开放教育学院指导教师XXX学生姓名学号专业第一次指导指导时间；指导内容：第二次指导指导时间：指导内容：第三次指导指导时间：第四次指导指导时间：指导内容：毕业设计(论文)指导教师情况及评语指导教师基本信息姓名学历专业职称年龄毕业院校职业工作单位指导教师评语指导教师（签名）：年月日论文成绩毕业设计(论文)答辩记录表答辩学生：XXX学号：XXXXXXXXXXXXX专业：机械设计及其自动化方向论文题目：轴承架的冷冲压拉深工艺及模具设计记录人（签名）：年月日序号主答辩教师提问学生回答情况1234参答辩教师提问学生回答情况567毕业设计（论文）审查意见答辩委员会组成情况姓名职称工作单位备注主持人成员成员答辩委员会评审结果答辩委员会评语答辩成绩综合成绩答辩委员会签名答辩日期年月日试点单位意见签章：年月日重庆电大终审部门意见签章：年月日中央电大毕业论文轴承架的冷冲压拉深工艺及模具设计摘要在现在飞速发展的社会中，模具已经成为很多国家用于衡量经济情况标准之一。很多行业产品的制造，都需要利用模具进行加工，它已经成了一个炙手可热的行业。随着经济的不断发展，模具在各个方面的应用越来越广泛，本次设计主要是在以往对模具的了解基础上，更进一步的去设计轴承架冷冲压拉深这一比较简单的模具，去更清楚的认识模具在实际设计中的各种要求。为能让冷冲压适应各工业部门的需要，冲压技术需要不断的革新和发展，这要求设计者对模具的各项内容都有很清楚的认识。设计中，上模座、下模座、导柱、导套都采用国家标准形式，也使设计过程得到了很大程度的简化。关键字：轴承架；拉深工艺；模具设计中央电大毕业论文目录摘要····································································································1引言····································································································1第一章模具····················································································1一、模具的分类···············································································1二、模具的基本结构········································································2三、模具在工业时代的重要地位····················································2（一）模具工业是高新技术产业的一个组成部分·······························3（二）模具工业是装备工业的一个组成部分·······································3（三）国民经济的五大支柱产业都要求模具工业的发展与之相适应·········3四、我国当前的模具水平现状························································3（一）模具CAD/CAM技术状况···························································4（二）模具设计与制造能力状况························································5（三）我国模具与世界先进水平的差距···············································6五、中国模具的发展······································································6（一）全面推广CAD/CAM/CAE技术···················································6（二）模具扫描及数字化系统·························································7（三）提高模具标准化程度····························································7（四）模具自动加工系统的发展························································7六、结语·························································································7第二章零件分析··········································································8一、零件的生产纲领及生产类型······················································8二、零件分析··················································································8中央电大毕业论文第三章冲裁··················································································10一、冲裁过程中的变形··································································10二、冲裁工作件排样······································································11三、影响冲裁件质量的因素···························································13四、冲裁力、推件力、卸料力的计算·············································14五、冲模压力中心的确定······························································15六、凸、凹模间隙的确定······························································16七、凸、凹模刃口尺寸计算···························································17八、冲模具闭合高度的确定及落料压力机选择·······························18第四章拉深··················································································21一、零件拉深分析·········································································21二、拉深变形的特征······································································21（一）拉深变形的起皱现象····························································21（二）拉深件的壁厚变化·······························································21三、圆筒形零件拉深工艺计算·······················································22（一）体积不变原理·····································································22（二）相似原理···········································································22四、拉深次数和半成品尺寸计算····················································22五、压边力和拉深力的计算···························································23（一）压边力的计算·····································································23（二）拉深力的计算·····································································23（三）拉深功的计算·····································································25六、拉深模工作部分尺寸的确定····················································26（一）凹模圆角半径·····································································26（二）凸模圆角半径·····································································27中央电大毕业论文（三）凸凹模的间隙计算·······························································28（四）凸凹模尺寸及公差·······························································29第五章模具总体设计·····················30一、模具设计·······························································