Quality inspection methods in the production of stamping parts

Stamping is at the top of the four major processes in automobile manufacturing. Stamping is used as the basis for the quality assurance of automobile bodies.

2018

Automated precision die size

Metalstampingdiestampingpartsuseaflip-chipcompositediestructure.Itismainlycomposedofrigidpusherdevice,elasticdischargedevice,positioningparts,punchingpunch,blankingdie,convexandconcavedie,fixedplateandpadplate.Thedieframeusesthecenterguidecolumndieframewithsmoothsliding,accurateandreliableguidance. Theworkingprocessofthemetalstampingdieisasfollows:feedthebartobepunchedalongtheguidepin24tothestopperpin20,andtheupperdiedescendsthroughthepunchpunches5,11,12Punchingof2Φ8.5mmholes,5Φ7mmholes,and2curvedholeswithalengthof45mmandawidthof8.5mmwascompleted,andblankingofthebracketwascompletedatthesametime. Thepunchingwasteofthemoldisdischargedbythepushingmethod,andthepunchingactionofthemetalstampingdiepressisusedtocompletethepunching.Theoverlappedwastematerialadoptsanelasticdischargemethod.Whiletheupperdieispuncheddown,thedischargeplate25pushestherubber18toproducecompressiondeformation,andthedischargeplate25generatesadownwardrelativedisplacementwithrespecttotheconvexandconcavedie17.Whentheupperdiemovesupward,therubber18rebounds,causingthedischargeplate25tomoveupwardrelativetothemaleandfemaledie17,whichdrivestheedgescrapsbuckledonthemaleandfemaledie17tomoveupward,sothattheedgescrapsareseparatedfromthemaleandfemaledie17tocompletetheunloading.material.Thepunchedpartsremaininginthedie16aredischargedbythepunch8oftherigidpushdevice,thepunch9,thepushrod10,andthepushplate26bythereturnmotionofthepress.Atthispoint,apunchingprocessiscompleted,andthestriptobepunchediscontinuouslyfedalongtheguidepin24tothestopperpin20forthenextpunchingprocess. Astheproductiontimecontinues,themoldcoolingchannelofthesteelcabinetfilecabinetispronetodepositscale,rust,siltandalgae,whichmakesthecrosssectionofthecoolingchannelsmallerandthecoolingchannelnarrower,whichgreatlyreducestheheatexchangeratebetweenthecoolingliquidandthemold.Increasingtheproductioncostoftheenterprise,soattentionshouldbepaidtothecleaningoftherunner;forthehotrunnermold,themaintenanceoftheheatingandcontrolsystemishelpfultopreventtheoccurrenceofproductionfailures,soitisparticularlyimportant.Therefore,aftertheendofeachproductioncycle,thebeltheater,rodheater,heatingprobe,andthermocoupleonthemoldshouldbemeasuredwithanohmmeter.Ifitisdamaged,itshouldbereplacedintimeandcarriedoutwiththemoldresume.Compareandmakerecordssothatproblemscanbeidentifiedinatimelymannerandcountermeasurescanbetaken. Payattentiontothesurfacemaintenanceofthemold,itdirectlyaffectsthesurfacequalityoftheproduct,andthefocusisonpreventingrust.Therefore,itisespeciallyimportanttochooseasuitable,high-quality,professionalanti-rustoil.Afterthesteelofficefurniturestampingmoldhascompletedtheproductiontask,differentmethodsshouldbeusedtocarefullyremoveresidualinjectionmoldingaccordingtodifferentinjectionmolding.Copperrods,copperwiresandprofessionalmoldcleaningagentscanbeusedtoremoveresidualinjectionmoldingandotherdepositsinthemold,andthenair-dried.Donotcleanhardobjectssuchasironwiresandsteelbarstoavoidscratchingthesurface.Iftherearerustspotscausedbycorrosiveinjectionmolding,useagrindertogrindandpolish,andsprayprofessionalanti-rustoil,andthenstorethemoldinadry,cool,anddust-freeplace. Becausethematerialsofofficefurniturearedifferent,differentmaterialsareneededintheproductionprocessofofficefurnituremoldmanufacturers,suchassheetmaterials,plasticmaterials,accessoriesmaterials,hardwarematerials,andsoon.Makeandprocessmoldsaccordingtotheneedsofdifferentproducts.Thecombinedunitpartsrequiredfordifferentproductssuchasdesks,officechairs,screens,conferencetables,etc.areverydifferent.Sowhataretheclassificationsofsteelofficefurniturestampingdies? Thethreemajormanufacturingshapesofsteelofficefurniturestampingmoldscanbedividedintothreecategoriesaccordingtothedifferenttypesofmolds: Largenozzle:Therunnerandgateareonthepartinglineanddemouldedtogetherwiththeproductwhenthemoldisopened.Thedesignisthesimplest,easytoprocess,andthecostislow,somostpeopleusethesteelnozzleforofficefurniturestamping.Themoldisoperated. Nozzlemold:Therunnerandgateofthistypeofsteelofficefurniturestampingmoldarenotonthepartingline,andareusuallydirectlyontheproduct,soitisnecessarytodesignanadditionalsetofnozzlepartingline.Thedesignismorecomplicatedandtheprocessingismoredifficult.Generally,thenozzlesystemshouldbeselectedaccordingtotheproductrequirements. Hotrunnermold:Thestructureofthistypeofmoldisroughlythesameasthatofthesprue.Thedifferenceisthattherunnerislocatedinoneormorehotrunnerplatesandhotnozzleswithconstanttemperature.Thereisnocoldmaterialdemouldinginstampingautomation,andtherunnerandgatearedirectlyIntermsofproducts,theflowchanneldoesnotneedtobedemoulded.Thissystemisalsoknownasthenozzlelesssystem,whichcansaverawmaterials.Itissuitableforsituationswheretherawmaterialsareexpensiveandtheproductrequirementsarehigh.Thedesignandprocessingaredifficultandthemoldcostishigh.

2018

Four stamping techniques of automobile manufacturing

Thestampingofthefourmajorprocessesofautomobilemanufacturingmayhavebeenrushedatthetime.Imeantthataslongasthecarwasinvolved,Iwantedtotelleveryone,notonlythehistoryofautomobiledevelopment,usedcars,autorepair,automobilemanufacturing,andnewenergy.ButwhenIregisteredtheheadlinenumber,Iforgottoconsidercarefully.Iwillexplainithere. Fourstampingtechniquesofautomobilemanufacturing Maybeatthetime,ImeantthataslongasIwasconcernedaboutcars,Iwantedtotellyou,notjustthehistoryofautomobiledevelopment,second-handcars,autorepairs,automobilemanufacturing,andnewenergy.ButwhenIregisteredtheheadlinenumber,Iforgottoconsideritcarefully.Iwillexplainithere.Iwillintroduceyoutotheautomobileknowledgeinasystematicway.Inthenextfewdays,Iwillmainlyintroducethefourmajorprocessesofautomobilemanufacturing(stamping,stamping,Welding,painting,assembly),andothernewenergysuchasautomotivenewenergywillbeintroducedoneafteranotherinthefuture. Peoplearefickle,andthenobleheadthatwasloweredyesterdaywillbehighertoday.Decided,inthefuture,ImustwritewhatIwanttowrite,anddonotcatertothoseso-calledhiddenrules.Pleaseforgivemeformyfreedomandfreedom.Thenightfell,andtheneonflashed.ApersonshuttledbetweentheschoolandtheSoutheastAutomobileFactory,lookingoutthewindow.Thereweremanypeoplewhohadseenthecar,butnoteveryoneknewhowthecarwasmade.Theautomotivespecialtyhasalsobeenestablishedinthelasttenyears.Sotalkingaboutcarmanufacturingwitheveryone,Ithinksomepeoplestilllikeit.Themainreasonisthatitisimpossibletotalkaboutcarswithoutmentioningcarmanufacturing.Yesterday'sstampingwasverysimpletowrite.Themistakesmadeyesterdaycametometoday.IhopeIcanwritealittlebetter. Acarisbuiltfromscratch.Thecarcontainscountlessparts,largeandsmall.Howwasitcreated? Simplystringtogetherthefourmajorautomobilemanufacturingprocessestoanswerthisquestion. Automakersusesteelpressesandstampingdiesinthestampingworkshoptostampthesteelcoilsoutofvarioussheetmetalparts(suchasfivedoorsandonecover,leafplates,roofs,etc.)thatmakeupthecarbody;Thepiecesaresenttotheweldingworkshopforbodyassembly.Theequipmentusedhereismainlyweldingguns,jigs,androbots.Withthedevelopmentofindustrialtechnology,moreandmoremanualspotweldingoperationswillbereplacedbyrobots.Itwassenttopainting,whichisagatheringplaceforthecoretechnologyofanautomobilefactory.Generally,thepaintingmustbesprayedatleastthreetimes.ThefirstlayerismainlyEDlayerforrustprevention,andtheothertwolayersaremainlyusedforaesthetics.;Afterfinishingthepainting,wewillgotothefinalassemblystation.Thefinalassemblyismainlytoassemblevariousaccessoriesonthecar,suchasenginetransmissionsuspensiontiresandsoon.Afterthefinalassembly,acarisbasicallyfinished,butthefinalassembledcarmustgothroughsomerigoroustests.Onlythosecarsthatpassthetestcanbedeliveredtocustomers.

2018

The emergence of stamping hydroforming technology solves the problem of wrinkling and cracking of aviation sheet metal parts

ScienceandTechnologyDaily,Shenyang,June8th(ReporterHaoXiaoming)Inaerospaceequipment,sheetmetalpartsaccountformorethan20%ofthetotalnumberofpartsandmanufacturingworkload,whilehigh-strengthaluminum,magnesium,titaniumandotherlightalloysheetmetalInthemanufacturingprocess,duetoitspoorplasticity,itiseasytowrinkleandcrackduringtheformingprocess,whichhasbeenplaguedbytheleveloflightweightandintegrateddevelopmentofsheetmetalpartsinChina'saviationindustry. ThereporterlearnedfromtheInstituteofMetalResearchoftheChineseAcademyofSciencesthattheimpacthydroformingtechnologysuccessfullydevelopedbytheplasticsprocessingadvancedtechnologyresearchgrouphasrealizedtheformationofaerospacecomplexthin-walledframeparts,andsuccessfullydevelopedtheworld'sfirstmachinebasedoncompletelynewprinciples.Canbeusedforproductionofimpacthydroformingequipment. "Thistechnologycanchangemorethan8artificiallyassistedmanufacturingprocessesinthetraditionalaluminumalloysheetformingprocessintoa2-passautomatedproductionprocess,withouttheneedforintermediateprocessheattreatment,whichhasincreasedtheproductionefficiencyby4timescomparedtothepast,andisexpectedtopromoteandimproveThelevelofdevelopmentofChina’saviationsheetmetalmanufacturingindustry."ResearcherZhangShihong,theleaderoftheplasticsprocessingadvancedtechnologyresearchgroupattheChineseAcademyofSciences,saidthatpreviously,ChinahasfollowedtheformerSovietUnion'sdrophammerformingtechnology,whichrequiresacombinationofdiepressingandmanualoperation.However,thedefectsoftheformedpartsincludescratchesonthesurface,lowyield,andpooraccuracyandconsistencyoftheparts. "Especiallythemanufactureofcomplexandspecial-shapedthin-walledsheetmetalpartsofaluminum,magnesiumandtitaniumlightweightalloyswithsmallcharacteristicstructuressuchasbosses,stiffenersandsmallroundedcornershasbecomeanimportantissuethatneedstobesolvedtopromotetheleveloflargeaircraft."ZhangShihongSay. Inresearchanddevelopment,theprojectteamformedanewimpacthydroformingtechnologybycombiningliquid-filleddeepdrawingtechnologyandhigh-speedimpactformingtechnology,anddesignedaplateimpacthydroforminglimittestdeviceaccordingly.Theyhaveprovedthroughalargenumberofexperimentsthatthistechnologyanddeviceisalsoapplicabletotheformingandpreparationofaluminumalloys,aluminum-lithiumalloys,magnesiumalloys,andtitaniumalloys. Basedonthis,theresearchgroupindependentlydevelopedthisnewprincipleofspecialequipmentforimpacthydroforming.Itisreportedthattheequipmentusesahydraulicaccumulatorcombinationstructure,whichcanachievehigh-energyhigh-speeddrivingandcontroloflarge-massimpactbodies,whichisalsothecorepatenttechnologyoftheequipment.

2018

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Yangzhou Longxiang Stamping Hardware Co., Ltd.

Add: Qiangmin Village, Shatou Town, Yangzhou City

Tel：0514-87461749

Phone：13705278961

E-mail：lx@yzlongxiang.cn