Yam cuam tshuam rau wrinkling ntawm stamped qhov chaw thiab cov kev daws teeb meem
(1) Cov nyhuv ntawm stretching qhov tob
Kev faib tawm ntawm cov khoom ntws tsis kam raws qhov qhib qhov tuag yog ncaj qha ntsig txog qhov tob ntawm qhov kos duab. Ntawm qhov concave thiab convex nkhaus txoj haujlwm, qhov tob tob tob tuaj yeem ua rau tsis sib xws ntawm kev deformation tsis kam thiab daim ntawv wrinkles, uas yuav tsum tau zam kom ntau li ntau tau.
(2) Kho qhov luaj li cas ntawm qhov khoob khoob khoob khoob
Thaum wrinkles tshwm nyob ib ncig ntawm lub workpiece, nws yuav tsum tau txiav txim siab hais tias lub pressing quab yuam yog tsis txaus, thiab cov wrinkles tuaj yeem raug tshem tawm los ntawm maj mam nce lub zog. Thaum stretching conical thiab hemispherical qhov chaw, feem ntau ntawm cov khoom yog nyob rau hauv cov huab cua thaum stretching pib. Nws yog ib qho yooj yim uas yuav ua rau wrinkles ntawm sab phab ntsa, yog li ntxiv rau kev ua kom cov ntug tuav quab yuam, tus tuaj tos thiab ncab tav yuav tsum tau ntxiv los ua kom cov radial tensile stress nyob rau hauv lub phaj thiab tshem tawm wrinkles.
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(3) Cov nyhuv ntawm lub vojvoog ntawm qhov tuag fillet
Yog hais tias lub fillet vojvoog ntawm qhov tuag loj dhau lawm, qhov khoov tsis kam ntawm qhov khoob uas ntws mus rau hauv qhov tuag thiab dhau los ntawm qhov sib npaug ntawm qhov tuag yuav me dua, uas ua rau khoov deformation. Qhov me me qhov khoov tsis kam, qhov yooj yim dua nws ua rau wrinkles. Qhov me me ntawm lub vojvoog ntawm qhov tuag, qhov ntau dua qhov khoov tsis kam rau khoov deformation, thiab qhov tsawg dua nws yuav wrinkle, tab sis nws tuaj yeem yooj yim ua rau tawg thiab napping ntawm ib feem.
Los ntawm kev sib sau ua ke ntawm ntau qhov kev ua haujlwm tsim khoom, nws tau raug pov thawj tias qhov tseem ceeb ntawm wrinkles nyob rau hauv stamping qhov chaw yog tsub zuj zuj ntawm cov ntaub ntawv thaum lub sij hawm stretching txheej txheem thiab ntau dhau ceev ntawm lub zos cov khoom txav. Thaum tsim cov kev daws teeb meem tiag tiag, cov txheej txheem sib xws ntawm cov pwm yuav tsum tau hloov kho los ntawm cov khoom saum toj no, uas yuav ua tiav cov txiaj ntsig zoo.
Kev ntsuas thiab txoj hauv kev los tiv thaiv wrinkling ntawm qhov chaw stamped
Txoj kev los tiv thaiv wrinkling yog los xyuas kom meej tias cov pwm tuaj yeem nias cov khoom thaum lub sij hawm ncab ntawm cov hlau stamping qhov chaw kom ntseeg tau tias qhov tsim nyog khiav ceev ntawm cov ntawv hlau. Yog tias daim ntawv cov ntaub ntawv ntws nrawm dhau thaum lub stamping yog ncab, nws yuav ua rau wrinkles; ntawm qhov tod tes, yog tias daim ntawv cov khoom ntws qeeb dhau, nws yuav ua rau lub stamping tawg.
(1) Siv lub tshuab nias tsim nyog
Thaum siv cov cuab yeej nias, lub tshuab nias nruj nreem nias lub deformed ib feem ntawm qhov khoob thiab siv lub zog nias rau nws los tiv thaiv qhov flange ntawm arching thiab ua rau wrinkles. Qhov loj ntawm lub zog nias yuav tsum tsim nyog. Cov khoom siv nias tau muab faib ua ob pawg: elastic nias thiab nruj nias. Cov khoom siv elastic yog tsim rau kev kos duab ntiav thiab cov khoom siv nruj yog tsim rau kev sib sib zog nqus nqus.
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(2) Tsim nyog siv cov hlaws dai
Kev teeb tsa cov hlaws dai rau ntawm qhov chaw nias yog ib txoj hauv kev zoo thiab siv tau los kho thiab tswj deformation tsis kam. Drawbeads tuaj yeem tswj xyuas cov khoom ntws zoo, ua kom cov dej ntws tawm ntawm txhua qhov ntawm cov khoom sib xws thaum lub sijhawm teeb duab, kom cov khoom ntws mus rau hauv cov kab noj hniav yog qhov tsim nyog rau qhov xav tau ntawm ib feem, tiv thaiv wrinkling feem ntau. thiab tawg hauv qhov tsawg kawg nkaus. Qhov tshwm sim. Rau nkhaus tensile qhov chaw nrog cov duab complex, tshwj xeeb tshaj yog cov me me flanges, kos hlaws yuav tsum tau teem kom lub radial tensile stress ntawm stretch los tswj wrinkling; cov hlaws dai yuav tsum tau teem rau hauv qhov kev taw qhia radial. Ntawm qhov chaw uas muaj kev ntxhov siab me me, uas yog, qhov chaw uas cov ntaub ntawv ntws tau yooj yim. Rau qhov chaw nrog me me flanges, txhawm rau teeb tsa cov hlaws dai, qee cov khoom siv (cov txheej txheem ntxiv cov khoom siv) tuaj yeem muab ntxiv kom tsim nyog, thiab qhov no tuaj yeem raug tshem tawm thaum txiav. Rau cov khoom kos nrog qhov sib txawv loj hauv qhov tob, kos cov hlaws yuav tsum tau muab tso rau hauv qhov chaw nrog cov khoom noj tsawg dua, kom cov khoom siv ntau dhau ntawm qhov no tuaj yeem tiv thaiv kom tsis txhob raug rub mus rau hauv qhov tuag kab noj hniav, yog li tiv thaiv wrinkling.
03 Kev tshuaj xyuas ntawm qhov ua rau ntawm wrinkles nyob rau hauv tensile qhov chaw
Muaj ntau ntau yam vim li cas qhov chaw tensile wrinkle thaum lub sij hawm stretching. Cov laj thawj tseem ceeb yog raws li nram no:
(1) Cov duab kos qhov tob ntawm qhov chaw stamping yog qhov sib sib zog nqus heev, ua rau cov ntaub ntawv ntws nrawm dhau thaum lub sijhawm pub mis, ua rau wrinkles.
(2) R-lub kaum sab xis ntawm qhov tuag yog loj heev thaum lub sij hawm stretching txheej txheem ntawm stamping qhov chaw, ua rau cov punch tsis tuaj yeem nias cov khoom thaum lub sij hawm stretching txheej txheem, ua rau daim ntawv ntws sai heev thiab ua rau wrinkles.
(3) Cov ribs nias ntawm stamping qhov chaw tsis tsim nyog. Cov kab nrib pleb me me dhau lawm thiab qhov chaw tsis raug, uas tsis tuaj yeem tiv thaiv cov ntaub ntawv los ntawm kev ntws nrawm dhau thiab ua rau wrinkles.
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(4) Lub siab ntawm lub ejector tus pin yog me dhau, ua rau cov khoom stamping tsis tiav thiab ua rau wrinkles.
(5) Cov pwm tsim qauv tsim tsis tsim nyog, ua rau tsis muaj peev xwm nias cov khoom thaum lub sij hawm ncab ntawm cov khoom stamping los yog cov npoo nias me dhau, ua rau tsis muaj peev xwm nias cov khoom thaum lub sij hawm ncab, ua rau wrinkles.
(6) Qhov sib txawv ntawm concave thiab concave pwm yog qhov loj heev, ua rau cov khoom tsis tuaj yeem raug nias thaum lub sij hawm ncab, ua rau wrinkles.
Cov saum toj no yog feem ntau ua rau wrinkling thaum lub sij hawm stretching txheej txheem ntawm hlau stamping qhov chaw, uas yuav tsum tau tshwj xeeb tsom xam nyob rau hauv tej teeb meem. Nrhiav cov laj thawj tshwj xeeb raws li cov xwm txheej tshwj xeeb ntawm cov khoom stamping.
