正文描述:《冲孔落料弯边模毕业论文》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、冲孔落料弯边模设计摘要级进模具有以下特点:1、级进模是多工序模。在一幅模具内,可以包括冲裁、弯曲、成形、和拉深等多种多道工序,具有比复合模更高的劳动生产率。2、级进模具有操作安全这一显著特点。因为工序可以分散,不必集中在一个工位,不存在复合模“最小壁厚”问题,因而模具强度较高,寿命较长等。一般对于冲孔落料弯边加工的工件,在已经确定为采用级进模加工时,通常采用先落料,冲孔,再弯边的加工方法。由于该加工的生产批量较大,如果把三道工序放在一起,可以大大提高工作效率,并减轻工作量,节约能源,降低成本,而且可以避免原有的加工方法中须将手伸入模
2、具的问题,对保护操作者安全也很有利。将三道工序复合在一起,可以有以下两个不同的工艺方案:一种为先落料,然后冲孔和弯边在同一个工步;另一种为落料,冲孔在同一工步首先完成,然后进行弯边。模具的结构主要由上模座,下模座,垫板,凸模固定板,凸模,卸料板,导料板,凹模,等零件组成。该模具采用手工送料,由侧刃和定位销精确定位。此模具结构紧凑,赚、拆、修磨方便,操作简单,安全可靠,生产效率比传统模具生产提高两倍以上。基本能够达到大批量生产的要求。关键词:卸料板,正装式级进模,导正销,工位数。AbstractThemouldhasthefollow
3、ingfeatures:1.Progressivedieismoreprocesses.Inonepicture,itcanincludethemouldblanking,bending,forming,andetc,andhasmanymorethantheprocessofcompositemodulushigherLabourproductivity.2.themouldaresafeoperationthisremarkablecharacteristics.Becausetheprocesscanbescattered,d
4、on'tfocusonacompositemodulus,thereisnota"minimumthickness"question,thusmouldhashighstrength,longerlifeexpectancy.Generally,forpunchingblankingcurvededgeprocessinghasbeendeterminedintheworkpiece,forusingtheprocessing,usuallybyblanking,punching,bendingmachiningmethods.Du
5、etothelargebatchprocessingproduction,ifthethreeworkingtogether,Progressivediecangreatlyimprovetheworkingefficiencyandreduceworkload,saveenergyandreducethecost,andcanavoidtheoriginalprocessingmethodmustbereachedintothemoldtotheprotectionoftheoperatorsafety.Willthreework
6、ingtogether,itcanhavecompositesundertwodifferentcraftproject:first,blankingfirst,thenpunchingandmaterialinthesamecurvededge,Anotherkindofcraftprojectisblankingandpunchinginthesamework,thenstepfirstbendboundary.Themouldstructureconsistsmainlyofthemouldseat,mouldseat,pla
7、te,plate,punchfixedpunch,unloading,conductingplate,etc,concavedieparts.themoldmanuallybylateralbladefeedingandpositioningandprecisepositioning.Themouldstructurecompact,easy,andgrinding,simpleoperation,safeandreliable,productionefficiencythantraditionalmoldproductioninc
8、reasemorethantwice,whichmakeitachievethebasicrequirementofmassproduction.Keywords:stripperplateandisaprogressivedie,g
显示全部收起