医用床挂板冲压工艺分析及模具设计摘要本次毕业设计的任务是医用床挂板冲压工艺及模具分析。通过查阅了相关文献资料对医用床挂板进行了工艺及设计有关的计算,如:选择基本工序,确定其顺序,工序数目及工序组合形式。介绍了主要零部件的设计概念,详细解剖了设计过程中的一些思路。阐述了工位级进模的设计特点,使产品质量达到设计要求。冲压的成型作为现代的工业中一种十分重要的加工方法,用以生产各种板料零件,具有很多独特的优势,其成型具有自重轻,刚度大,强度高,互换性好,成本低,生产过程便于实现机械自动化及生产效率高等特点,是一种其他加工方法所不能相比和不可替代的先进制造技术,在制造业中具有很强的竞争力,被广泛应用于各种行业,和日常生活的生产当中。AbstractPunchingdiehasbeenw1ff8idelyusedinindustrialproduction.Inthetraditionalindustrialproduction,theworkerworkveryhard,andtherearetoomuchwork,sotheefficiencyislow.Withthedevelopmentofthescienceandtechnologynowadays,theuseofpunchingdieintheindustialproductiongainmoreattention,andbeusedintheindustrialproductionmoreandmore.Self-actingfeedtechnologyofpunchingdieisalsousedinproduction,punchingdiecouldincreasetheefficienceofproductionandcouldalleviatetheworkburden,soithassignificantmeaningintechnologicprogressandeconomicvalue.copyrightdedecms31.Romanovski,V.P."Dictionaryofcold-stamping",Ed,Tehnica,Bucharest,197032.TeodorescuM."thetechnologyofcoldl-forming",Ed.didacticaandpedagogica,Bucharest,1980Thearticlemainlydiscussedtheclassification,featureandthedevelopmentaldirectionofthepnnchingtechnology.Elaboratedthepunchingcomponentsformationprinciple,thebasicdiesstructureandtherateprocessandtheprincipleofdesign;anddesignedsomeconventionalpunchingdie:thedieforbigdiameterthreedirectionpipewhichsolvedtheproblomoftraditionalmachining,thedrawingandpunchingcompounddiewithfloatpunch-matrix,thedrawingandcuttingcompounddieswithunalteredpress,thecompounddieforthebackbowlofthenoisekeeper,thedesignofthecompounddiewhichcouldproducetwoworkpiecesinonepunching,thebendingdiefortheringshapepart,thebendingdiewhichusedthegemel,automateloadingdieforcutting,thedrawing,punchingandburringcompounddieswithslidingautomatedloading,thepunchingdieforthelongpipewithtworowofhole,thedrawingdieforthesquareboxshapeworkpieceandtheburringdiefortheboxshapeworkpiece.Thepunchingdiesthatutilizedthefeatureofthenormalpunchshapedtheworkpieceintheroomtemperature,anditsefficiencyandeconomicsituationisexcellent第2页共45页编号:时间:2021年x月x日书山有路勤为径,学海无涯苦作舟页码:第2页共45页第一章Handset(手机)Structure&AssemblyHandset的装配设计由彩色效果图(Rendering)开始,可以从外形及结构两方面交叉进行。一、外形设计---LineDrawing的确定第3页共45页第2页共45页编号:时间:2021年x月x日书山有路勤为径,学海无涯苦作舟页码:第3页共45页根据彩色效果图(Rendering)画出初步的外形草图,所有描线及尺寸须圆整,过渡光滑顺畅,构图简单,确保符合彩色效果图(Rendering)的风格。在此基础上再作如下修改。1、确定Handset正面轮廓线考虑PCB的宽度和长度以及零件的高度,如Receiver、Mic等,确保装配空间足够,间隙合理。画出“危险”截面图,保证扣位空间及位置正确。2、Handset侧面轮廓线的定义调整PCB的装配位置高度,确保LCD、ShieldCan、Receiver、Buzzer、Mic和电池有足够的空间。Receiver和Mic不能形成自激回路(FeedBack),应考虑密封性。还要考虑Buzzer的共鸣腔及出声口。3、确定PartLine,须考虑以下几个方面:3.1、确定P/L线时,尽量使PCB靠近P/L线,力求获得最小宽度的Handset,但从ESD考虑,P/L要尽可能与PCB板相错位或远离PCB,以得到较好的ESD性能,如有可能P/L可高出PCB板4m...