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基于三维模具技术的LED灯配件模具设计与制造 毕业设计任务书

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基于三维模具技术的LED灯配件模具设计与制造 毕业设计任务书

PNBSPNBSP西南科技大学城市学院NBSPCITYCOLLEGEOFSOUTHWESTUNIVERSITYOFSCIENCEANDTECHNOLOGYNBSPNBSPNBSPNBSPNBSP课程设计论文(设计)NBSPNBSPNBSP论文题目NBSP基于三维模具技术的LED灯配件模具设计与制造NBSPNBSP指导教师NBSPNBSPNBSPNBSPNBSPNBSP武NBSPNBSPNBSP燕NBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSP系NBSPNBSP别NBSPNBSPNBSPNBSPNBSPNBSP机电工程系NBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSP专业班级NBSP机械设计制造及其自动化NBSP制造1001NBSPNBSPNBSP姓NBSPNBSP名NBSPNBSPNBSPNBSPNBSPNBSP赵NBSPNBSPNBSP晗NBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSP学NBSPNBSP号NBSPNBSPNBSPNBSPNBSPNBSP201040194NBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSP日NBSPNBSP期NBSPNBSPNBSPNBSPNBSPNBSP2013年11月NBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSP目录NBSP摘要1第一章NBSP绪论21NBSP目的NBSP22NBSP设计任务2NBSPNBSPNBSP21UG软件使用NBSP2NBSPNBSPNBSP22零件冲压方案2NBSPNBSPNBSP23模具结构设计23设计要求2–第二章NBSP弯曲工艺设计3NBSP1、弯曲零件32、弯曲工艺分析321材料分析322结构分析33、工艺方案确定4NBSPNBSP4、弯曲工艺计算4NBSPNBSPNBSP41毛坯尺寸计算4NBSPNBSPNBSP42弯曲力计算5NBSPNBSPNBSP43弯曲模主要零部件计算65、冲压设备的选择96、弯曲模模架结构设计9NBSP61模座的设计9NBSPNBSPNBSP62模具闭合高度9NBSPNBSPNBSP63固定板、垫板、定位板、顶料块及模柄尺寸10NBSP64紧固装置10NBSPNBSPNBSP65橡胶垫的选用10NBSPNBSPNBSP66热处理要求117、模具的装配图12小NBSP结18参考文献19NBSP1NBSP摘要NBSP随着模具的迅速发展,在现代工业生产中,模具已经成为生产各种工业产品不可缺少的重要工艺设备,为了扩展在学生在弯曲模具方面的知识,为了适应社会的要求,学校教学环节中,模具三维项目实践是不可缺少的一部分,这次项目实践是在学习完弯曲、模具制造以及三维等课程的基础上进行的,是对学生综合能力的考核,是对学生所学知识的综合运用,也是对学生所学知识的回顾与检查。通过实例,分析了的弯曲工艺方案,并根据零件形状和类型,制定合理的弯曲模具,阐述了模具结构特点及工作过程,最后提出了模具设计应该注意的问题。NBSP关键词弯曲NBSPNBSPNBSP弯曲工艺NBSPNBSPNBSP模具设计2NBSP第一章NBSP绪论NBSP第一节NBSP目的NBSP项目实践是重要的实践环节之一,它将理论联系实际,用所学知识在实践中进行融会贯通,培养调查研究、分析问题和解决问题的能力,培养学生独立工作以及创新能力,为今后的学习工作打下坚实的基础。NBSP第二节NBSP设计任务NBSP1UG软件使用NBSPNBSP熟悉UG软件在二维设计、实体造型和装配方面的应用。NBSP2零件弯曲方案NBSPNBSP1)分析零件的弯曲工艺性。NBSP3模具结构设计NBSPNBSP1)模具的二维工程图设计。NBSPNBSP2NBSP模具零件的三维设计及模具三维装配。NBSP第三节NBSP设计要求NBSP1设计必须由学生本人独立完成。NBSP2完成设计说明书一份。NBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSP3第二章NBSP弯曲工艺设计NBSP1弯曲零件NBSPNBSPU型件弯曲模具设计,零件如图11,参数如图所示,大批量生产。NBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSP图NBSP11NBSP2弯曲工艺分析NBSP具有良好工艺性的弯曲件,能简化弯曲工艺过程和提高弯曲精度,并有利于模具的设计和制造。弯曲件的工艺设计材料、结构工艺和弯曲件的精度内容。NBSP21材料分析NBSPNBSP该工件所用材料10钢是常用的弯曲材料,塑性较好,适合冲压加工,大批量生产。NBSPNBSP22结构分析NBSPNBSPNBSP零件结构简单,形状对称,对弯曲成型较为有利。查表1(垂直于纤维)材料允许最小弯曲半径RMIN01T02MMLT3MM,不会弯裂。计算零件NBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSP4相对弯曲半径R/T15LT3,卸载后弯曲圆角半径变化不予考虑,工件的弯曲直边高度为3477MM,远大于2T,因此可以弯曲成功。该工件是一个弯曲角度为90O的弯曲件,所有尺寸精度均未标注公差,而当R/TLT5时,可以不考虑圆角半径的回弹,所以该工件符合普通弯曲的经济精度要求。NBSP3工艺方案的确定NBSP工序直接弯压U型件。NBSP4弯曲工艺计算NBSP41毛坯尺寸计算NBSP毛坯总长度等于各直边长度加上各圆角展开长度,即NBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPL2L1L22L弯NBSP由图1可得NBSPNBSPNBSPNBSPNBSPNBSPL125MMNBSPNBSPNBSPNBSPNBSPL2150MMNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSP5NBSP表2由R/T15NBSP取X036L弯NBSP314/2RXT85L2L1L22L弯21742弯曲力计算NBSPNBSP总冲压力等于校正力和压料力之和,先计算校正力NBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPF校AP611260439KN根据弯曲力经验公式NBSPFZ07KBT2ΣB/(RT)NBSP07131222400/(32)3494NNBSPNBSPFD0308FZ2796NNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSP6NBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSP表3由于校正弯曲力比顶件力大的多,故一般FD可忽略。NBSP43弯曲模主要零部件尺寸NBSP(1)凸模圆角半径RPNBSPNBSP在保证不小于最小弯曲半径值的前提下,当零件的相对圆角半径TR/较小时,凸模圆角半径取等于零件的弯曲半径,即RPR5MM(2)凹模圆角半径RD凹模圆角半径不宜过小,以免擦伤零件表面,影响冲模的寿命。根据厚度RD(23)T3T6MM(3)凹模深度NBSP过小的凹模深度会使毛坯两边自由部分过大,造成弯曲件回弹量大,工作不平直;过大的凹模深度增加了凹模尺寸,浪费模具材料,并且需要大行程的压力机,因此模具设计中,要保持适当的凹模深度。该产品零件为弯边高度不大且两边要求平直的U形弯曲件,则凹模深度应大于零件的高度,且高出值H05MM。查表得凹模工作部分深度为32MM。NBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSP7NBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSP图41(4)凸凹模间隙NBSP由式由C(105~115)TNBSP可取C11T11MM。NBSP(5)凸凹模宽度尺寸NBSP零件标注在外形上,应以凹模首先设计凹模的宽度尺寸。基本尺寸为65MM,板厚2MM的弯曲件未注公差为04MM,则由式NBSP凹模宽度DLLDΔ0Δ50D400615065MM400264MM凸模宽度0Δ2PCLLDP040222264MM040859MMNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSP8(6)凸凹模造型NBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSP凸模NBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSP凹模NBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSP9NBSP5冲压设备的选择NBSP根据计算选取冲压设备J2310,其主要技术参数如下NBSP公称压力100KN滑块行程45MM最大闭合高度180MM闭合高度调节量50MM模柄孔尺寸Φ30X50MM工作台厚度40MM电动机功率15KW外形尺寸17507508506弯曲模模架结构设计NBSP(2)模具闭合高度NBSPNBSPNBSP模具的闭合高度是指压力机滑块在下止点位置时,模具上模座至下平面间的距离,与压力机有以下关系NBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSP10NBSP(5)橡胶垫的选用NBSP1为保证橡胶垫不过早失去弹性而损坏,其允许的最大压缩量不得超过自由高度的45,一般取H总(035~045)H自由。橡胶垫的预压缩量一般取自由高度的10~15。NBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPH工作H总H预NBSPNBSP故工作行程NBSPNBSPH工作H总(01~015)H自由NBSP由工作行程可计算出橡胶垫高度NBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPH自由H工作(025~030)NBSP式中NBSPNBSPH自由橡胶垫自由状态下多的高度NBSPNBSPNBSPNBSPH工作所需工作行程NBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSP112橡胶垫产生的力NBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPFAP式中NBSPNBSPNBSPF压力NBSPNBSPNBSPNBSPNBSPNBSPA橡胶垫横截面积NBSPNBSPNBSPNBSPNBSPNBSPP与橡胶垫压缩量有关的单位压力NBSP橡胶垫压缩量单位压力P/MPA橡胶垫压缩量单位压力P/MPA10026NBSPNBSPNBSP25106NBSPNBSP15050NBSPNBSPNBSP30152NBSPNBSP20070NBSPNBSPNBSP35210(6)热处理要求NBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSP127模具的装配图NBSPNBSP模具工作过程开启模具后,将落料件放置于定位板9与凹模12之间,当弯曲模具的上模向下运动时,凸模7和顶件板11压住弯曲毛坯,使弯曲毛坯准确地、可靠地定位,凸模7、凹模12将弯曲毛坯逐渐夹紧下压而弯曲;当模具的上模继续向下行进,R2圆弧很快成型。当形成终了时,凸模7回程,弹顶器痛螺杆15、顶尖块11将弯曲件顶出。完成NBSP一个工作过程。NBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSP13零件图NBSP模具结构装配NBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSP14NBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSP15模具整体图NBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSP16NBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSP17NBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSP课NBSP程NBSP设NBSP计NBSP说NBSP明NBSP书NBSPNBSP18NBSP小NBSP结NBSP通过这次模具UG项目实践,我深深体会到了学习知识的重要性。通过这次实践,我对弯曲模的理论知识有了更深的理解,在设计的过程中翻阅了大量的参考书及手册,让我对一些参数有一个新的认识。通过参考一些别人的设计作品和查阅资料,吸取其中的精华,去除糟粕,自己也可以学会许多东西。NBSP这次项目实践,也让我对以前学过的制图软件有了加深,比如CAD和UG,以前根本不懂模具的装配过程和爆炸方法,现在通过UG项目实践,重新学到了很多知识,受益颇深。也让我以后在工作中打下了良好的基础。通过这次项目实践,让我知道,模具的设计和制造只有理论知识是不行的,任何模具的设计都要有一定的实际经验才可以设计出更合理的模具。所以,在今后的学习和工作中,我更应该保持严谨的态度去学习,去工作,争取成为一名优秀的模具设计人员,为模具行业的发展贡献自己的一份力量。NBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSPNBSP课NBSP程NBSP设NBSP计NBSP说NBSP明NBSP书NBSPNBSP19参考文献NBSP张信群NBSP主编NBSPAUTOCADNBSPNBSPNBSPNBSPNBSPNBSP合肥工业大学出版社NBSP张信群NBSP主编NBSP机械制图NBSPNBSPNBSPNBSPNBSPNBSP合肥工业大学出版社NBSP张信群NBSP主编NBSP互换性与测量技术NBSP北京航空航天大学出版社NBSP张荣清NBSP主编NBSP模具设计与制造NBSPNBSPNBSPNBSPNBSP高等教育出版社NBSP王孝培NBSP主编NBSPNBSP冲压手册NBSPNBSPNBSPNBSPNBSPNBSPNBSP机械工业出版社NBSP郝滨海NBSP主编NBSPNBSP冲压模具简明设计手册NBSPNBSP化学工业出版社NBSP梅伶NBSPNBSP主编NBSP模具课程设计与指导NBSPNBSPNBSP机械工业出版社NBSP王芳NBSPNBSP主编NBSP冷冲压模具设计与指导NBSPNBSP机械工业出版社NBSPNBSPNBSPNBSPNBSPNBSP/P

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