Wrinkling yog ib qho tsis xws luag thaum lub stamping txheej txheem ntawm automotive aluminium ntawv, tshwj xeeb tshaj yog thaum ua cov txheej txheem nkhaus. Qhov teeb meem no yog ze rau cov khoom siv cov khoom thiab cov txheej txheem tsis thiab tuaj yeem zam cov kauj ruam tseem ceeb kom pom tseeb.
Cov khoom siv plasticity thiab anisotropy muaj qhov tau txais ntau yam cuam tshuam wrinkling. Elongation ntawm automotive aluminium ntawv yog feem ntau ntawm 15% thiab 25%. Yog tias deformation ntawm cov stored feem ntau tshaj li cov khoom txwv, poundized wrinkling yuav tshwm sim. Tsis tas li ntawd, cov qauv fibrous tsim thaum lub sij hawm yob ua rau anisotropy, ua rau tsis tshua muaj kev cuam tshuam nrog kev sib tw. Txoj kev tsis raug cai dawb paug yuav ua rau ua rau wrinkling vim tsis sib luag. Yog li ntawd, ua ntej Stamping, cov kev taw qhia dawb yuav tsum tau hloov kho raws li cov xaim ntawm lub tsheb almias daim ntawv los xyuas kom meej tias kev coj ua ntawm dov.
Kev yuam kev dawb yog tus yuam sij rau kev tiv thaiv wrinkle. Thaum twg stamping Automotive aluminium yuav tsum sib phim rau cov khoom tuab thiab ntsuas ntawm deformation, thiab feem ntau tswj tau ntawm 50 thiab 300 kn. Rau cov ntawv nyias tsawg dua 1mm tuab, me me dawb uas tuav lub zog tuaj yeem ua rau muaj qhov tsis txaus ntseeg, ua rau txoj hlab wavy. Kev quab yuam dhau heev tuaj yeem ua kom muaj kev sib txhuam thiab ua rau tawg. Ib qho stages dawb paug tswj kev tswj hwm tau tuaj yeem ua haujlwm: Siv cov khoom siv qis hauv cov khoom siv nrog cov khoom nruab nrab los tiv thaiv cov khoom siv nruab nrab, ua rau muaj kev phom sij ntawm wrinkling.
Cov punch thiab tuag sib txawv thiab fillet vojvoog yuav tsum tau qhia meej meej. Rau automotive aluminium ntawv stamping, cov kis yuav tsum yog 1.1-1.2 zaug cov ntaub ntawv tuab. Ntau qhov sib txawv tau yooj yim ua rau wrinkles thaum deformation, thaum tsawg heev tuaj yeem ua kom sib txhuam thiab ua kom khawb npoo npoo. Lub ces kaum ces kaum lub vojvoog yuav tsum yog 8-10 npaug rau daim ntawv tuab. Tsawg heev fillet nce cov khoom siv ntws tsis kam, ua rau cov khoom hauv zos cov khoom tsim kho thiab wrinkling; Ntau dhau lawm fillet txo cov nyhuv uas tuav tau. Rau ib tug 1.2mm tuab siv automotive aluminium ntawv, piv txwv li ces kaum ces kaum lub voj voos yog pom zoo rau 10-12 hli, nrog kis tus choj tsis pub dhau 1.3mm.
Cov duab dawb thiab qhov loj tsim qauv yuav tsum tau ua kom zoo dua. Cov npe tsis raug yuav ua rau cov khoom siv dhau los kom nyuaj rau kev hloov pauv kom zoo thaum lub sijhawm stamping, coj mus rau wrinkles. CAE cov ntawv tshawb fawb pom tau pom tias cov khoom siv ntws thiab tsim cov duab tsis sib xws los ntawm cov khoom siv preemptely. Piv txwv li, cov ntug profile ntawm aluminium ntawv blanks rau cov vaj tse lub qhov rooj kom ntseeg tau tias muaj kev sib tw ntws thoob txhua qhov chaw, txo cov nyom ntawm qhov chaw.
Tswj tswj ntawm lubrication thiab stamping ceev kuj tseem ceeb heev. Ua ntawv thov ib qho tshwj xeeb stampant (viscosity 20-30 CST) mus rau saum npoo ntawm aluminia daim ntawv tuaj yeem txo cov coefficient ntawm kev sib txhuam rau hauv qab 0.1, zam cov khoom tsis sib xws ntws tsis kam. Cov kev xav tau stamping stamping yog 150-250 hli / s. Ntau dhau nrawm tuaj yeem ua rau muaj cov lus teb qeeb ntxiv thiab ua yeeb yaj kiab. Ntau lub sijhawm nrawm ntev ntev thiab nce kev pheej hmoo ntawm lubrication tsis ua haujlwm. Rau qhov seem nrog cov chaw caws pliav nkhaus, cov khoom siv ceev ceev tuaj yeem siv, txo qhov nrawm hauv cov cheeb tsam tau los ua kom ntseeg tau tias cov khoom siv hluav taws xob ntws.
