Tuag Crashes Exposed: Sheet Hlau Stamping Tuag Tsis Zoo Bypass Notches Scientific Basis

Nkag siab Bypass Notches hauv Sheet Hlau Stamping Tuag

Ib qho bypass notch, qee zaum hu ua pitch notch lossis French notch, yog ib qho kev txiav txim siab los yog kev pab cuam uas tsim los rau hauv cov cab kuj ntawmib tug progressive stamping tuag. Nws lub hom phiaj yog qhov yooj yim tab sis tseem ceeb: tswj kom deb li deb ntawm txoj hlua khi ntawm cov xovxwm strokes kom txhua qhov chaw nres tsheb tau txais cov khoom hauv txoj haujlwm raug. Yog tias tsis muaj qhov kev tswj hwm no, kev noj zaub mov ntau dhau los yog kev noj qab haus huv ntawm lub sawb dhau los ua qhov muaj peev xwm tiag tiag, thiab raws li txhua yam kev paub txog cov cuab yeej thiab cov kws tshaj lij tuag paub, ib qho misfeed tuaj yeem ua rau tuag taus raug nqi ntau pua zaus ntau dua li cov khoom siv thais.

Kab lus no nkag mus rau hauv lub hauv paus kev tshawb fawb tom qab qhov tsis zoo thiab qhov zoo bypass notches nyob rau hauv cov ntawv hlau stamping tuag, bridging qhov sib txawv ntawm cov lus qhia kev qhia stamping thiab cov kws tshaj lij -theem tuag science. Koj yuav pom cov hauv paus ntsiab lus ntawm metallurgical, mechanical kev sib raug zoo, thiab kev txiav txim siab engineering es tsis yog cov cai ntawm tus ntiv tes xoo ib leeg.

Dab tsi yog Bypass Notches hauv Progressive Tuag

Xav txog ib qho txuas txuas ntxiv ntawm cov ntawv hlau pub los ntawm kev nce qib tuag ntawm kev kub ceev. Lub sawb hla dhau ntau qhov chaw nres tsheb, txhua qhov ua haujlwm tshwj xeeb txiav, sib sau, lossis kos duab ua haujlwm. Rau qhov ua tiav kom tau raws li qhov ntev ntev, txhua qhov chaw nres tsheb yuav tsum koom nrog txoj hlua khi ntawm qhov tseeb ntawm tib txoj hauj lwm txheeb ze, mob stroke tom qab mob stroke.

Ib tug bypass notch muab qhov positional tseeb. Nws yog ib feem me me ntawm cov khoom txiav tawm ntawm ib los yog ob qho tib si ntawm cov khoom siv sawb, feem ntau ntawm thawj qhov chaw ntawm qhov tuag. Qhov tshwm sim geometry tsim lub cev nres lossis kev sau npe tshwj xeeb uas lub strip hu ua ntej lub voj voog xovxwm. Raws liArt Hedrick sau ntawv hauv Tus Fabricator, overfeeding ib tug zuj zus tuag yam tsis muaj qhov no nres tuaj yeem ua rau muaj kev puas tsuaj loj heev thiab cov neeg ua haujlwm muaj kev nyab xeeb.

Tshaj li tiv thaiv overfeeds, qhov thais kuj tshem tawm ntug camber qhia thaum lub sij hawm coil slitting. Camber ua rau kev noj qab nyob zoo yuav luag tsis yooj yim rau cov ntaub ntawv dav lossis tuab, thiab los ntawm kev txiav cov ntug siv huv si, hla cov ntawv hlais rov qab coj tus cwj pwm coj los ntawm tag nrho ntev ntev.

Vim li cas Strip Control Demans Precision Engineering

Strip tswj nyob rau hauv ib tug zuj zus tuag muaj ntau tshaj li tsuas yog pub rau qhov tseeb nyob deb. Cov neeg nqa khoom lub vev xaib tuav cov khoom ua ke yuav tsum ua kom muaj kev ncaj ncees, tiv thaiv sab nraub qaum, thiab ua kom haum rau ntsug ntawm cov chaw tsim khoom. Ib qho chaw tsis zoo los yog qhov tsis raug qhov ntsuas qhov ntsuas tsis muaj zog ua rau tus neeg nqa khoom tsis muaj zog, ua rau buckling, lossis ua tsis tiav rau kev nres kev ntseeg siab.

Bypass notches pab peb lub luag haujlwm tseem ceeb hauv qhov system no:

• Daim ntawv sau npe- Muab qhov chaw nres tsheb ruaj khov uas tiv thaiv kev noj ntau dhau thiab ua rau cov neeg ua haujlwm pib qhov tseeb thaum lub sijhawm teeb tsa tuag, txo qhov ua ntej - ntaus yuam kev uas ua rau feem ntau ntawm kev puas tsuaj tuag.
• Kev tswj cov khib nyiab- Tshem tawm ntug camber thiab tsim kom huv si nto, uas tshem tawm cov seem xoob lossis ib nrab - hits uas tuaj yeem cuam tshuam cov chaw nres tsheb hauv qab.
• Chaw nres tsheb - mus rau - chaw nres tsheb kev nce qib tswj- Ua haujlwm hauv kev hais kwv txhiaj nrog tus tsav tus pins kom ntseeg tau tias txhua qhov chaw nyob ntawm qhov raug, nrog rau qhov kev txiav txim siab muab qhov chaw ntxhib thiab cov kws tsav dav hlau xa cov kev sib tw kawg.

Txhua qhov kev ua haujlwm muab qhov tshwj xeeb geometric thiab metallurgical xav tau ntawm tus qauv tsim. Qhov tob, dav, kaum radii, thiab txiav clearance ntawm lub notch tag nrho cov cuam tshuam nrog cov khoom siv kho tshuab los txiav txim seb lub sawb pub kom ntseeg tau los yog tsim teeb meem ntau lawm.

Negative Versus Positive Notch Fundamentals

Cov ntsiab lus "tsis zoo" thiab "zoo" piav qhia txog kev sib raug zoo ntawm cov duab geometry thiab lub strip edge. Azoo bypass notchtshem tawm cov khoom siv los ntawm txoj hlua khi, tsim kom muaj qhov sib txawv, nyem, lossis sab hauv txiav tawm. Lub slug tsim los ntawm qhov kev txiav no yog ejected li discrete seem. Dab tsi tseem tshuav yog ib txoj hlua nrog txo tus ntoo khaub lig-section ntawm txhua qhov chaw.

A negative bypass notchsiv txoj kev rov qab. Ntau dua li tshem tawm cov khoom siv tag nrho, nws tawm ntawm lub tab lossis lance -zoo li feature txuas los ntawm ntug ntug. Cov tab no cuam tshuam nrog lub hnab tsho sib xws lossis nres thaiv hauv qhov tuag, muab qhov zoo rau kev sau npe yam tsis tau tsim cov slug cais. Ib qho kev hloov pauv, tau piav qhia hauv kev lag luam cov ntaub ntawv raws li lub lance thiab flange pitch nres, lances thaj tsam me me hauv cov kab nrib pleb thiab khoov nws downwards los tsim ib lub flange uas ob qho tib si sau lub strip thiab stiffens tus cab kuj.

Qhov kev xaiv ntawm cov kev teeb tsa no yeej tsis yog qhov xav tau. Nws nyob ntawm cov khoom siv, strip dav, thickness, ntau lawm ntim, thiab ib feem complexity. Txhua qhov kev teeb tsa tsim cov kev sib txawv ntawm kev ntxhov siab, cov qauv tawg, thiab hnav cov yam ntxwv hauv cov cuab yeej, tag nrho cov uas taug qab rov qab mus rau cov hauv paus ntsiab lus ntawm shear mechanics thiab cov khoom coj tus cwj pwm nyob rau hauv load.

Science ntawm Shear thiab Fracture hauv Notch Cutting

Txhua bypass notch pib raws li ib tug tswj puas. Thaum cov punch nqis mus rau hauv lub sawb, cov khoom siv tsis yooj yim sib cais kom huv si. Nws dhau los ntawm ib theem ntawm deformation theem, txhua tus tswj hwm los ntawm kev sib raug zoo ntawm cov ntaub ntawv yielding quab yuam, cov khoom lub zog tawm los, thiab cov geometry ntawm cov punch- tuag interface. Kev nkag siab txog cov theem no yog dab tsi cais kev tshawb fawb-raws li tus qauv tsim los ntawm kev kwv yees.

Shear Mechanics Thaum Ntxov Txiav

Daim duab lub sij hawm ib tug notch punch hu rau lub strip nto. Cov khoom siv ncaj qha hauv qab lub punch taub hau compresses elastically ua ntej, tom qab ntawd plastically raws li cov kev ntxhov siab hauv cheeb tsam tshaj qhov tawm los ntawm lub zog thiab cov ntsiab lus ntawm cov hlau. Qhov kev hloov pauv ntawm elastic mus rau cov cwj pwm yas ua raws li cov khoom siv qhov kev ntxhov siab-txoj kev nkhaus (qee zaum hu ua ss nkhaus hauv engineering shorthand), thiab nws tshwm sim hauv microseconds ntawm cov nqi ntau lawm.

Lub zog txiav yuav tsum yog nyob ntawm lub zog shear ntawm cov khoom, uas feem ntau poob ntawm 60 thiab 80 feem pua ​​​​ntawm nws qhov kawg tensile lub zog. Raws liArt Hedrick piav qhia, txiav 10- ntiv tes- txoj kab uas hla ntawm 0.100-inch me me steel yuav tsum muaj kwv yees li 78,000 lbs ntawm lub zog. Bypass notches koom nrog nyob deb me me perimeters, tab sis cov kev ntxhov siab nyob rau hauv lub punch-tuag interface yog proportionally khaus vim hais tias cov geometries feem ntau muaj xws li cov ces kaum nruj thiab nqaim dav.

Ntawm lub punch ntug, cov khoom raug yuam downward thaum lub qhov tuag qhib txwv lub voj voog ncig. Qhov no tsim ib qho nqaim shear band qhov twg cov yas strain concentrates. Qhov dav ntawm qhov band no nyob ntawm kev tshem tawm ntawm cov punch thiab tuag. Tsis txaus clearance compresses cov khoom tom qab, ua rau lub yielding quab yuam uas yuav tsum tau rau kev sib cais thiab generating ntau kub nyob rau hauv lub shear cheeb tsam. Kev tshem tawm ntau dhau tso cai rau cov yas khoov ntau dhau ua ntej tawg, ua cov npoo thiab cov burrs loj.

Fracture Zone Tus cwj pwm hauv qhov zoo thiab qhov tsis zoo

Ib qho tiav txiav ntug exhibitsplaub thaj chaw sib txawv, txhua tus qhia txog dab tsi tshwm sim mechanically thaum txiav:

• Rollover- Plastically deformed cheeb tsam khoov raws li cov cuab yeej txiav mus rau daim ntawv saum npoo, pom raws li ib puag ncig ntug ntawm lub punch sab.
• Hlawv- Cov kab du, ci ntsa iab qhov twg cov punch nkag mus rau hauv cov khoom hauv compression ua ntej muaj kev puas tsuaj. Nto nyuaj siab ntawm no compress rau hauv cov cuab yeej txiav.
• tawg- Qhov ntxhib, kaum sab xis uas cov kab nrib pleb nthuav tawm los ntawm cov khoom siv ntxiv, ua tiav qhov sib cais.
• Burr- Hlau elongated thiab thawb tawm ntawm ntug ntawm kev txiav, tsim los ntawm qhov kawg tearing nkaus.

Ntawm no yog qhov uas qhov zoo thiab qhov tsis zoo ntawm kev teeb tsa diverge hauv tus cwj pwm. Nyob rau hauv ib tug zoo notch, lub punch tshem tawm ib tug discrete slug los ntawm lub strip ntug. Qhov tawg tsam propagates sab nraud, deb ntawm tus cab lub cev thiab mus rau hauv lub slug uas ua seem. Lub sawb khaws cov nplaim taws kub hnyiab ntawm nws cov ntug seem, uas feem ntau yog qhov huv, ntau qhov chaw ruaj khov.

Nyob rau hauv qhov tsis zoo notch, lub geometry thim rov qab. Qhov kev txiav txhais tau hais tias ib lub tab protruding uas tseem txuas nrog lub sawb. Fracture propagation tshwm sim nyob rau hauv, mus rau lub strip lub cev ntawm lub hauv paus notch. Qhov no txhais tau hais tias tus cab kuj strip nws tus kheej khaws cov yam ntxwv ntawm qhov tawg tsam ntawm lub hauv paus ntawm lub tab feature.

Cov txiaj ntsig zoo tsim tawm sab nrauv tawg ntawm qhov sib piv rau lub cev strip, tawm hauv cov npoo ntawm cov cab kuj. Tsis zoo notches tsim inward fracture propagation, concentrating lub rougher puas cheeb tsam thiab cuam tshuam microstructural puas nyob rau hauv lub hauv paus notch nyob rau hauv lub carrier strip sab.

Qhov kev sib txawv no muaj qhov tshwm sim tiag tiag. Lub shear cuam tshuam cheeb tsam (SAZ) tom qab txhua lub ntsej muag txiav muaj cov haujlwm ua haujlwm- cov khoom siv tawv nrog cov qauv sib hloov. Hauv dual-theem steels, cheeb tsam no tuaj yeem txuas ntxiv 40 feem pua ​​lossis ntau dua rau hauv daim ntawv tuab. Thaum muaj qhov tsis zoo ntawm qhov chaw ua rau thaj tsam puas ntawm cov cab cab, kev ua haujlwm tom qab ntawm cov chaw nres tsheb hauv qab no siv cov kab mob ntxiv rau cov uas twb tau ua haujlwm lawm- cov khoom siv tawv, ua rau muaj kev pheej hmoo ntawm ntug kev tawg.

Grain Structure thiab Crack Propagation Direction

Cov ntawv hlau tsis yog homogeneous ntawm qib microstructural. Rolling thaum lub sij hawm ntau lawm elongates nplej nyob rau hauv lub dov kev taw qhia, tsim anisotropy nyob rau hauv txhua yam khoom. Thaum ib qho kev sib tsoo pib tawg, cov kab nrib pleb nyiam ua raws li txoj hauv kev tsawg kawg nkaus los ntawm cov qauv nplej.

Nyob rau hauv cov ntaub ntawv uas lub dov kev taw qhia khiav mus rau tib lub strip feed direction (feem ntau orientation), tawg propagation ntawm notch ces kaum feem ntau ua raws li grain ciam teb nrog pub. Rau cov txiaj ntsig zoo, qhov no ua haujlwm hauv koj qhov kev nyiam vim tias qhov tawg mus rau hauv qhov seem slug. Rau qhov tsis zoo, qhov kev xav zoo ib yam tuaj yeem tsav cov kab nrib pleb raws tus cab kuj strip ntug, tshwj xeeb tshaj yog nyob rau hauv qhov tob tob hauv paus radii qhov twg muaj kev ntxhov siab ntau tshaj plaws.

Kev faib tawm quab yuam ntawm lub punch- tuag interface kuj txawv ntawm kev teeb tsa. Ib tug zoo notch punch txiav rau hauv cov khoom tsis pub dawb ntawm lub strip edge. Cov khoom tuaj yeem deform me ntsis sab nraud vim tias ib sab tsis muaj kev txwv. Ib qho tsis zoo thaib xuas nrig ntaus, los ntawm qhov sib piv, txiav cov khoom uas raug txwv ntawm ob sab los ntawm lub cev strip. Qhov kev txwv ob sab no ua rau muaj kev ntxhov siab ntau ntxiv ntawm cov punch ntug thiab ua kom nrawm nrawm, tshwj xeeb tshaj yog thaum ua cov khoom siv nrog cov khoom siv siab zog tawm los muaj txiaj ntsig zoo li siab heev - lub zog steels.

Cov tswv yim coj mus siv yog tias cov kev cai tshem tawm tau tsim los rau kev ua haujlwm tho cov txheej txheem tsis txhais ncaj qha mus rau notch -cov geometry tshwj xeeb. Notch punches khiav lag luam nyob rau hauv asymmetric txwv tej yam kev mob, thiab cov fracture mechanics txawv raws li seb lub geometry khaws cia yog lub sawb (positive notch) los yog tab (tsis zoo notch). Txhua qhov kev teeb tsa xav kom tshem tawm qhov ua kom zoo tshaj plaws rau nws lub xeev kev ntxhov siab tshwj xeeb, cov khoom siv, thiab cov kev xav tau qis qis tso rau ntawm ntug txiav.

Zoo Bypass Notch Mechanics thiab Strip Behavior

Ib tug zoo bypass notchLub cev tshem tawm ib feem ntawm cov khoom siv los ntawm ntug strip, tawm hauv qab qhov sib txawv lossis nyem qhov twg hlau ib zaug muaj. Qhov no suab ncaj nraim, tab sis cov neeg kho tshuab qhov tshwm sim cascade los ntawm txhua qhov chaw nres tsheb hauv qab. Lub sawb yuav sib dua, nqaim ntawm qhov chaw thais, thiab tsis tshua muaj zog rau khoov. Txawm hais tias cov txiaj ntsig pab lossis tsim kev puas tsuaj yog nyob ntawm qhov ua tau zoo ntawm qhov ntsuas qhov ntsuas qhov sib npaug ntawm cov cab kuj tsim cov cai.

Yuav ua li cas zoo Notches tshem tawm cov khoom los ntawm Strip

Thaum lub sij hawm ib tug zoo notch xuas nrig ntaus stamping lag luam, ib tug zoo li tus punch nqis los ntawm lub strip ntug thiab mus rau hauv ib tug coj tuag qhib. Lub punch perimeter txhais cov notch profile, feem ntau yog ib lub duab plaub los yog trapezoidal txiav sab hauv los ntawm lub strip ntug. Cov khoom sib cais tau dhau los ua ib qho kev sib cais ntawm cov slug uas ntog los ntawm qhov qhib qhov tuag thiab yog ejected downward rau hauv ib lub chute los yog thawv.

Dab tsi tseem nyob ntawm daim kab xev yog qhov huv si -edged recess. Qhov chaw so no ua haujlwm raws li kev sib koom tes nres. Thaum cov kab nrib pleb nce mus, cov ntug ntawm qhov thais hu rau ib qho chaw nres nres lossis tus pin hardened hauv qhov tuag, nres rau pem hauv ntej ntawm qhov tseeb qhov kev ncua deb.

Vim hais tias ib sab ntawm kev txiav yog unconstrained (qhov qhib strip ntug), lub shear mechanics thaum lub sij hawm ua hauj lwm no txawv ntawm ib tug tag nrho cov tho kev ua hauj lwm. Cov khoom nyob ze ntawm ntug dawb tuaj yeem deform me ntsis sab nraud thaum lub sij hawm punch nkag, uas txo cov compressive kev nyuaj siab ntawm lub ntsej muag punch piv rau ib tug kaw -perimeter txiav. Qhov no txhais tau hais tias lub stamping punching quab yuam yuav tsum tau rau ib tug zoo notch yog me ntsis qis dua rau ib tug sib npaug qhov loj qhov punched deb ntawm ib tug ntug, txhua lwm yam yog sib npaug.

Txawm li cas los xij, qhov qhib ntug qhia txog kev txhawj xeeb sib txawv. Yog hais tias lub punch-rau- tuag clearance ntau dhau ntawm ntug sab, lub strip tuaj yeem deflect es tsis shear kom huv si, ua ib tug dov los yog torn ntug es tsis yog ib tug fracture cheeb tsam. Clearance kev sib raug zoo rau qhov zoo notch punches ua raws li tus qauv txiav clearance txoj cai tab sis yuav tsum tau nruj me ntsis tswj nyob rau hauv lub dawb- ntug sab los them rau qhov tsis muaj cov khoom txwv.

Strip Rigidity thiab Feed Stability Tom qab zoo Notching

Txhua qhov txiaj ntsig zoo yuav txo cov kab nqa khoom hla hla - ntu ntu ntawm qhov chaw nyob. Xav txog kev saib ntawm daim kab xev los ntawm qhov kawg: qhov twg tag nrho - dav cov cab kuj muaj qhov tsis sib xws rau kev khoov, tus nqa nqa nqa nqa tau muaj cov ntsiab lus tsis muaj zog nyob rau lub sijhawm uas qhov tawv nqaij poob. Qhov tob dua qhov kev txiav txim siab, qhov ntau dua qhov txo.

Qhov no tseem ceeb vim tias cov cab kuj muaj zog yuav tsum tiv thaiv kev khoov thaum lub sij hawm pub mis. Raws li Art Hedrick sau tseg, nws yuav siv li ntawm 10 feem pua ​​​​ntawm qhov hnyav ntawm qhov txav nws horizontally los ntawm qhov tuag. Muab qhov ntawd los ntawm tus naj npawb ntawm cov chaw nres tsheb, thiab cov khoom siv rub tawm ua rau ntawm tus nqa khoom uas twb tau qaug zog ntawm txhua qhov taw tes. Yog tias qhov seem seem -section tsis tuaj yeem txhawb nqa cov khoom noj khoom haus yam tsis muaj deflecting, lub strip yuav buckle los yog skew tom qab, tsim stamping tsim teeb meem uas ripple los ntawm txhua qhov chaw nres tsheb downstream.

Rau qhov nqaim strips, qhov kev lag luam tawm no - tawm yog qhov tseem ceeb. Ib qho kev tshem tawm uas tshem tawm 30 feem pua ​​​​ntawm cov sawb dav tuaj yeem txo tus neeg nqa khoom lub sijhawm ntawm inertia txaus los ua kom pom qhov muag ntawm cov chaw nres tsheb. Rau cov kab txaij dav nrog cov neeg nqa khoom dav dav, tib qhov sib npaug ntawm qhov tsis zoo muaj qhov cuam tshuam tsis zoo rau kev noj zaub mov. Qhov kev ua tau zoo nyob ntawm cov khoom tuab, cov khoom siv, thiab tag nrho cov kev ua tiav hauv qhov tuag.

Engineers them nyiaj rau qhov no hauv ntau txoj hauv kev:

• Stiffening tav- Ntxiv embossed hlaws dai los yog tsim ribs rau cov cab kuj strip ua ntej los yog tom qab qhov chaw nres tsheb, nce seem modulus yam tsis ntxiv cov khoom dav.
• Dual -sab ntswj- Muab cov qhov tob tob rau ntawm ob lub npoo npoo es tsis yog ib qho tob tob ntawm ib sab, faib cov ntoo khaub lig- ntu txo qhov sib npaug thiab tuav tus cwj pwm noj zaub mov sib npaug.
• Optimized notch qhov tob- Kev txwv qhov tob rau qhov tsawg kawg nkaus uas yuav tsum tau muaj rau kev txhim kho kev sib koom ua ke, feem ntau yog 1.5 txog 2.0 npaug ntawm cov khoom tuab, nyob ntawm qhov yuav tsum tau ua kom raug.

Punch Wear Patterns hauv kev ua haujlwm zoo

Qhov zoo thaib xuas nrig ntaus kev paub hnav txawv dua li cov qauv tho qhov punches, thiab vim li cas cov kab rov qab mus rau qhov txwv tsis pub dhau geometry. Nyob rau hauv ib tug qauv tho kev lag luam, cov punch txiav cov khoom nyob ib puag ncig ntawm txhua sab los ntawm sawb. Qhov tshwm sim compressive kev ntxhov siab yog qhov sib npaug ntawm qhov punch perimeter. Hauv kev ua haujlwm zoo, qhov qhib ntug sab pom tsawg dua compressive kuj thaum lub strip - lub cev sab pom tag nrho txwv.

Qhov no asymmetry concentrates hnav ntawm lub ntsej muag txwv ntawm lub punch, tshwj xeeb tshaj yog lub ntsej muag txiav tawm ntawm cov cab kuj strip lub cev. Tshaj li ntau txhiab tus mob strokes, qhov kev thauj khoom tsis sib xws no ua rau tus cwj pwm coj tus yam ntxwv: sab kev txwv tsim kho ntug sib npaug thiab micro- chipping ua ntej tshaj qhov dawb - ntug sab. Cov neeg tsim khoom tuag uas tuav cov cuab yeej no paub los tshuaj xyuas cov neeg nqa khoom- sab txiav ntug ua ntej thaum daws teeb meem burr loj hlob.

Punch geometry kuj cuam tshuam tus nqi hnav. Notch punches nrog ntse sab hauv cov ces kaum (hauv qab ntawm qhov thais profile) mloog zoo rau cov ntsiab lus ntawd. Radii ntawm cov ces kaum sab hauv tsis yog xaiv tau; lawv yog cov khoom tsim nyog. Tight corners hnav ceev tshaj plaws, thiab EDM hlau profiles siv los tsim cov punches yuav tsum suav nrog qhov tsawg kawg nkaus radii ntawm 0.5 mus rau 1.0 npaug ntawm cov khoom tuab ntawm txhua qhov kev hloov pauv sab hauv. Yog tsis muaj radii txaus, kev ntxhov siab risers ntawm lub punch ua kom cov npoo tawg thiab ua kom lub sijhawm ua haujlwm luv luv.

Slug cwj pwm nyob rau hauv zoo configurations ntxiv lwm yam hnav. Txhua tus mob stroke tsim ib qho kev sib cais ntawm cov slug uas yuav tsum eject huv si los ntawm qhov qhib tuag. Yog hais tias tus slug sticks mus rau lub ntsej muag lub ntsej muag ntawm lub rov qab stroke (ib qho mob hu ua slug rub), nws tuaj yeem nqa rov qab mus rau hauv qhov chaw txiav thiab crushed ntawm cov punch thiab sawb ntawm lub voj voog tom ntej. Slug rub puas tsuaj rau lub ntsej muag lub ntsej muag, mars lub strip nto, thiab tuaj yeem ua rau tuag taus thaum mob hnyav. Qhov zoo ntawm qhov tsis zoo geometries yog me ntsis cuam tshuam rau slug rub dua li tus qauv tho vim hais tias tus slug muaj ntug dawb uas tuaj yeem rov qab thiab tuav lub punch thaum lub sij hawm retraction. Cov kev daws teeb meem suav nrog angular shear ntawm lub ntsej muag lub ntsej muag, lub caij nplooj ntoos hlav-loaded ejector pins, thiab lub tshuab nqus tsev- pab tshem tawm cov kab mob.

Kev xaiv tshem tawm rau kev ua haujlwm zoo thaib sib npaug ntawm cov kev xav tau sib tw: nruj heev ua rau txiav quab yuam thiab ua kom cov punch hnav, xoob xoob ua rau ntau dhau burr thiab pheej hmoo slug tuav. Lub geometry-kev txiav txim siab tshwj xeeb rau kev tsim qauv yog qhov kev tshem tawm ntawm qhov qhib- ntug sab tuaj yeem loj dua me ntsis ntawm qhov txwv, suav rau lub xeev kev ntxhov siab asymmetric yam tsis muaj kev txi ntawm ntug zoo ntawm cov cab cab nws tus kheej.

Negative Bypass Notch Mechanics thiab Material Flow

Qhov zoo notches txi sawb dav rau huv slug ejection thiab yooj yim seem tswj. Cov ntawv tsis zoo ua rau kev lag luam sib txawv. Hloov chaw tshem tawm cov khoom siv los ntawm ntug strip, ib qho tsis zoo tawm ntawm lub tab lossis lance -zoo li feature nthuav tawm sab nraud ntawm cov cab kuj. Tsis muaj discrete slug raug tsim. Tsis muaj khoom ploj. Tag nrho strip cross-section tseem nyob twj ywm ntawm txhua qhov kev nce qib, thiab lub tab nws tus kheej dhau los ua cov txheej txheem sau npe uas cuam tshuam nrog cov hnab ris sib xws lossis nres cov blocks hauv qhov tuag.

Txoj hauv kev no tau hloov pauv qhov kev ntxhov siab ntawm cov cab kuj strip, hnav profile ntawm cov cuab yeej, thiab chaw nres tsheb - mus rau - chaw nres tsheb clearance. Koj khaws koj cov tawv nqaij tawv, tab sis koj tau txais cov txheej txheem tshiab ntawm geometric txwv uas yuav tsum tau tswj xyuas los ntawm txhua qhov chaw nres tsheb hauv qab.

Yuav ua li cas tsis zoo Notches Khaws Sawb Hla-Section

Thaum koj txiav qhov tsis zoo, cov punch thiab tuag tsim ib feem ntawm kev sib cais, feem ntau yog ib qho lance txiav rau ntawm peb sab ntawm ib qho me me los yog trapezoidal cheeb tsam ntawm lub strip edge. Sab plaub tseem txuas nrog, ua raws li pob khawm. Lub lanced tab yog tom qab ntawd khoov downward (los yog qee zaus upward) los tsim ib lub flange uas protrudes hauv qab los yog saum lub dav hlau sawb. Raws li tau piav qhia hauv kev lag luam cov ntaub ntawv, lub lance thiab flange pitch nres tshem tawm cov teeb meem tshem tawm tag nrho vim tias tsis muaj cov khoom sib cais.

Tus cab kuj strip khaws nws qhov dav dav. Tsis muaj ib ntus hla- ntu txo qis, tsis muaj kev poob qis hauv lub sijhawm ntawm inertia, thiab tsis muaj qhov tsis muaj zog ntawm thaj chaw uas muaj buckling nyob rau hauv cov khoom noj. Rau cov nqa nqa nqaim lossis cov ntaub ntawv nyias uas qhov kev nruj dhau lawm, qhov kev khaws cia ntawm tus ntoo khaub lig -section tuaj yeem yog qhov txiav txim siab hauv kev xaiv notch. Lub flanged tab kuj ntxiv qhov tawv nqaij hauv zos los ntawm kev ua zoo li lub pob zeb me me, tshwj xeeb tshaj yog thaum dai hauv lub bar lifter thaum pub mis.

Los ntawm kev siv cov khoom siv, cov ntawv tsis zoo siv xoom ntxiv strip dav tshaj qhov uas tus cab kuj xav tau. Cov txiaj ntsig zoo xav tau cov khoom siv ntxiv kom haum rau qhov tob ntawm qhov kev txiav tawm yam tsis muaj kev nkag mus rau ntawm qhov khoob. Qhov sib txawv ntawd, txawm tias tsuas yog ob peb millimeters ib sab, sib xyaw ua ke hla ntau lab ntawm cov khoom mus rau hauv kev txuag nyiaj tseem ceeb.

Registration Advantages of Protruding Tab Features

Lub khoov tab tsim los ntawm qhov tsis zoo notch muab peb lub npe - qhov loj me ntawm kev sau npe tsis yog ib qho yooj yim ntug nres. Thaum lub tab poob rau hauv ib lub mating qhov los yog lub hnab ntim machined rau hauv cov khau tuag los yog ib lub tsheb ciav hlau, nws ntes cov sawb nyob rau hauv ob qho tib si kev coj noj coj ua thiab vertically. Qhov no dual -axis kev koom tes tiv thaiv sawb nqa thaum lub sijhawm ua haujlwm siab - nrawm thiab tiv thaiv sab nraub qaum kom zoo dua li cov ntug tiaj tus kabmob tiv thaiv tus pin.

Xav txog dab tsi tshwm sim thaum teeb tsa. Tus neeg teb xov tooj xov tooj tshiab rau hauv qhov tuag xav tau qhov tseeb ua ntej - ntaus nres. Ib qho tsis zoo thaib tab poob rau hauv nws lub hnab tshos muab cov lus qhia tsis txaus ntseeg thiab pom tau tias lub sawb zaum raug. Qhov no txo ​​cov teeb meem yuam kev rau feem ntau ntawm kev sib tsoo tuag, uas feem ntau tshwm sim hauv thawj 10 hits thaum lub sij hawm tuag.

Rau qhov loj zuj zus tuag ua cov khoom siv dav lossis tuab coil, pilot pins ib leeg feem ntau tsis tuaj yeem sau npe rau lub sawb nrog txoj cai txaus ua ntej lub voj voog xovxwm. Cov kab ntawv tsis zoo ua ke nrog cov kws tsav dav hlau tsim ob -tier kev sau npe: lub tab muab qhov chaw ntxhib thiab kev tiv thaiv overfeed, thaum tus tsav tus pins muab qhov kawg precision sib dhos ntsuas hauv txhiab ntawm ib nti.

Clearance thiab chaw nres tsheb cuam tshuam kev txiav txim siab

Lub tshuab kom zoo dua ntawm qhov tsis zoo notch los nrog tus nqi geometric. Txhua lub tab protruding yuav tsum tau tshem tawm txhua qhov kev tuag ntawm lub cev raws li txoj hlua txuas ntxiv mus. Lifter rails, cam tsav tsheb, tsim punches, pad nto, thiab stripper daim hlau yuav tsum tau muab tshem tawm los yog slotted kom haum rau lub tab hla.

Hauv kev tuag nrog 15 lossis 20 chaw nres tsheb, qhov kev xav tau tshem tawm no nce nrawm. Txhua qhov chaw nres tsheb xav tau lub hnab tshos lossis cov channel sib piv rau lub tab qhov hneev taw, thiab cov kev nyem no yuav tsum suav rau lub tab lub kaum sab xis ntxiv rau txhua lub caij nplooj ntoos hlav uas tuaj yeem hloov kho nws qhov siab protruding. Yog hais tias ib lub tab ntes ntawm cov dej ntws qis thaum lub sij hawm pub noj, lub strips jams, thiab tom ntej no xovxwm stroke lands on misregistered khoom. Qhov tshwm sim yog tib yam tuag sib tsoo uas lub thais tau tsim los tiv thaiv.

Kev faib tawm kev ntxhov siab ntawm lub hauv paus hauv paus nthuav qhia lwm qhov tseem ceeb. Lub lance txiav uas txhais lub tab tsim ib tug ntse geometric discontinuity ntawm lub strip lub cev sab. Kev ntxhov siab concentrates ntawm lub hauv paus vojvoog hauv ib qho qauv tswj hwm los ntawm qhov piv ntawm lub vojvoog rau cov khoom tuab. Lub hauv paus vojvoog me dua 0.5 npaug ntawm cov khoom tuab tuaj yeem ua rau muaj kev ntxhov siab ntau tshaj 3.0, lub ntsiab lus hauv cheeb tsam kev ntxhov siab ntawm lub hauv paus cag ncav cuag peb npaug ntawm qhov kev ntxhov siab nyob ib puag ncig.

Qhov no tseem ceeb vim hais tias kev txiav thiab khoov kev txiav txim ntawm lub hauv paus ntswj ua haujlwm tseem ceeb hauv cheeb tsam ntawd. Cov khoom ntawm cov hauv paus hniav tau raug plastically deformed thaum lub sijhawm ua haujlwm lancing, thiab tom qab khoov ntawm lub tab intensifies strain hardening ntxiv. Nyob rau hauv qis- carbon steels, qhov deformation hardening yuav ua rau kom cov hardness hauv zos los ntawm 20 mus rau 40 feem pua ​​piv rau cov khoom siv hauv paus. Cov cheeb tsam yuav nyuaj dua, tsis tshua muaj ductile, thiab yooj yim rau tawg pib nyob rau hauv ntxiv loading.

Thaum lub sawb hla dhau los ntawm kev sib sau los yog khoov chaw nres tsheb, kev ua hauj lwm hardened notch cag paub ntxiv tensile los yog compressive strain. Yog hais tias ib qho kev ua haujlwm siv khoov kev ntxhov siab thoob plaws cov cab kuj nyob ze ntawm qhov chaw nres tsheb, cov kab mob uas twb muaj lawm ua rau lub hauv paus pib tawg. Qhov txo qis ductility txhais tau hais tias cov khoom ncav cuag nws txoj kev tawg sai dua li cov hlau puag ncig, muaj feem cuam tshuam cov cab kuj thaum tsim khoom.

Engineers tswj qhov kev pheej hmoo no los ntawm ntau txoj hauv kev:

• Generous paus radii- Qhia qhov tsawg kawg nkaus radii ntawm 1.0 mus rau 1.5 npaug ntawm cov khoom thickness ntawm lub lance cag, txo qhov siab tshaj plaws kev nyuaj siab concentration thiab faib cov yas lim hla lub ntim loj.
• Notch positioning deb ntawm daim ntawv zones- Nrhiav qhov chaw nres nkoj ntawm cov chaw nqa khoom uas tsis raug tsim los tom ntej, kom ntseeg tau tias kev ua haujlwm nyuaj hauv paus yeej tsis pom kev cuam tshuam ntxiv los ntawm kev khoov lossis kos duab.
• Kev xaiv cov khoom siv qib- Xaiv cov ntaub ntawv uas muaj peev xwm elongation ntau dua uas tuaj yeem nqus cov deformation hardening ntawm cov hauv paus hniav thiab tseem khaws cov ductility txaus rau kev ua haujlwm hauv qab.
• Tswj tab khoov lub kaum sab xis- Kev txwv qhov qis qis qis mus rau qhov tsawg kawg nkaus lub kaum sab xis uas xav tau rau kev tso npe txhim khu kev qha, txo tag nrho cov yas lim rau ntawm cov hauv paus hniav thaum lub sij hawm lancing thiab tsim ib ntus.

Tsis zoo notches kev lag luam chaw nres tsheb clearance complexity rau superior strip tswj thiab siv cov khoom siv. Cov neeg nqa khoom khaws cia tag nrho cov ntoo khaub lig- ntu ntu nruj thiab xoom cov khoom siv pov tseg, tab sis txhua qhov chaw nres tsheb hauv qab yuav tsum ua kom haum rau lub tab, thiab cov chaw ua haujlwm tawv tawv hauv paus xav tau ceev faj tsim qauv kom tsis txhob dhau los ua qhov chaw pib tawg.

Kev sib cuam tshuam ntawm cov hauv paus hauv paus metallurgy thiab cov kev tsim cov dej ntws hauv qab ua rau qhov tsis zoo thais tsim inherently rhiab rau cov khoom siv ntau dua li qhov zoo thais tsim. Cov ntaub ntawv uas tsis muaj elongation los yog aggressive strain hardening tus nqi amplify qhov kev pheej hmoo ntawm lub hauv paus notch, hloov lub engineering xam mus rau qhov zoo configurations nyob rau hauv tej daim ntawv thov. Cov ntaub ntawv tshwj xeeb npaum li cas cuam tshuam rau qhov kev suav yog qhov uas cov txheej txheem tsim kev tshawb fawb txuas ntxiv los ua si.

Yuav Ua Li Cas Cov Khoom Siv Hluav Taws Xob cuam tshuam rau Notch Design Selection

Lub hauv paus notch uas coj tus cwj pwm zoo hauv cov hlau me tuaj yeem dhau los ua qhov chaw pib tawg nyob rau hauv dual-theem 980. Ib qho kev tshem tawm uas ua rau cov npoo huv hauv txhuas tawm cov qhab nia thib ob ntawm cov hlau tsis huv. Cov ntaub ntawv qib tsis tsuas yog tweak bypass notch kev ua tau zoo; nws redefines tag nrho lub hnab ntawv tsim. Lub elastic modulus, elongation muaj peev xwm, tawm los lub zog ntawm cov hlau los yog alloy, thiab ua hauj lwm hardening tus nqi txhua tus ua lub luag hauj lwm txawv nyob rau hauv kev txiav txim seb ib tug notch ua hauj lwm reliable los yog ua tsis tiav ntxov ntxov.

Kev sib raug zoo ntawm cov khoom muaj zog thiab lub zog tensile yog qhov tshwj xeeb tshaj tawm. Cov ntaub ntawv nrog qhov sib piv qis ntawm cov txiaj ntsig no (lub ntsiab lus ntawm cov khoom siv ua haujlwm nyuaj ua ntej mus txog qhov kawg ntawm lub zog) ua rau lub hauv paus deformation zoo dua vim tias cov khoom nyob ib puag ncig tuaj yeem nqus lub zog tsis muaj kev puas tsuaj tam sim ntawd. Cov ntaub ntawv nrog qhov sib piv siab, qhov twg cov txiaj ntsig thiab qhov tensile nyob ze ua ke, yuav luag tsis muaj deformation tsis. Lub strips tuav los yog nws tawg.

Cov hlau me me thiab qis -Carbon Alloy Notch Behavior

Tsawg- carbon steels nrog cov txiaj ntsig zoo hauv qab 300 MPa thiab elongation tus nqi siab tshaj 30 feem pua ​​yog cov ntaub ntawv zam tshaj plaws rau kev ua haujlwm hla dhau. Lawv cov ductility siab txhais tau hais tias lub shear cuam tshuam cheeb tsam ntawm lub hauv paus notch tseem me me, thiab ua hauj lwm hardening ntawm txiav npoo yog nruab nrab. Lub modulus ntawm elasticity ntawm cov hlau nyob rau hauv pawg no zaum nyob ib ncig ntawm 200 GPa, muab kwv yees elastic rov qab thiab tsawg kawg nkaus springback ntawm lub thais tab.

Rau cov hlau me me, ob qho tib si zoo thiab qhov tsis zoo ntawm qhov kev teeb tsa ua tau zoo. Ntug zoo tom qab txiav qhia tau hais meej meej txog qhov kub hnyiab nrog kev hloov pauv mus rau thaj tsam tawg,zoo tagnrho tej yam kev mob rau ntug ductility. Clearances nyob rau hauv thaj tsam ntawm 5 mus rau 10 feem pua ​​ntawm cov khoom thickness tsim tau cov kev tshwm sim, thiab burr qhov siab ua hauj lwm pab raws li ib tug txhim khu kev qha qhov taw qhia ntawm thaum uas yuav tsum tau resharpening.

Ua hauj lwm hardening ntawm cov hauv paus hniav hauv cov hlau me me ua rau cov tawv tawv hauv zos tab sis tsis tshua muaj cov khoom seem elongation muaj peev xwm. Lub hauv paus tsis zoo uas tau lanced thiab khoov tseem khaws cov ductility txaus kom muaj sia nyob qis qis ua haujlwm yam tsis muaj kev tawg. Qhov kev zam txim rau tus cwj pwm no yog vim li cas qhov tsis zoo tshwm sim nyob rau hauv qis - cov ntawv thov carbon steel nce zuj zus thiab vim li cas ntau cov txheej txheem tsim qauv xav tias cov khoom siv hlau me me raws li cov hauv paus.

AHSS thiab High -Kev Sib Tw Cov Khoom Siv Zog

Advanced high -lub zog steels hloov qhov kev suav loj heev. Dual-theem (DP), complex theem (CP), thiab martensitic steels muaj zog tensile ntawm 600 MPa mus rau zoo tshaj 1400 MPa, tab sis lawv elongation qhov tseem ceeb poob mus rau ib tug lej nyob rau hauv lub siab tshaj plaws zog qib. Kev tshawb fawb luam tawm los ntawm AHSS Daim Ntawv Qhia Cov Lus Qhia tau lees paub tias cov qhab nia no pom muaj qib siab ntawm kev ua haujlwm tawv thaum lub sijhawm txiav, tsim kom muaj zog dua thiab tawv tawv ntawm cov npoo txiav nrog txo qis ntug ductility.

Lub elastic modulus ntawm cov hlau tseem tseem ceeb tas li nyob rau hauv cov qib no (kwv yees li 200 txog 210 GPa), yog li kev coj tus cwj pwm rov qab ntawm qhov kev txiav txim siab feem ntau yog tswj hwm los ntawm qhov sib piv ntawm cov txiaj ntsig ntawm lub zog rau elastic modulus es tsis muaj kev hloov pauv hauv nws tus kheej. Cov txiaj ntsig tau zoo dua ua kom muaj zog rov qab zoo dua tom qab khoov, lub ntsiab lus tsis zoo thaib tabs caij nplooj ntoos hlav rov qab ntau dua thiab yuav tsum tau nruj dua rau ntawm lub hnab tshos geometry kom tswj tau cov ntawv sau npe.

Ntug zoo nyob rau hauv AHSS coj counterintuitively. Cov ntaub ntawv no tsim cov rollover tsawg dua thiab cov burrs me dua li cov hlau me me vim tias lawv tawg nrog cov yas deformation tsawg. Txawm li cas los xij, cov ntug sheared muaj cov Islands tuaj nyuaj martensitic uas ua raws li cov neeg pib tawg. DP thiab TRIP steels yog qhov tshwj xeeb tshaj plaws vim tias cov khoom tawv tawv ntawm cov npoo txiav txuas ntxiv txo qhov tso cai rau ntug stretch. Rau cov hauv paus hniav tsis zoo hauv AHSS, qhov kev sib xyaw ua ke ntawm qhov txwv elongation thiab microstructural stress risers tsim kev coj tus cwj pwm tsis zoo.

Clearance xav tau nce ntau heev. Qhov twg cov hlau me me siv 5 mus rau 10 feem pua, cov qib AHSS yuav xav tau 14 mus rau 16 feem pua ​​lossis siab dua li lub zog tensile tshaj 1400 MPa. Ib txoj kev tshawb fawb ntawm CP1200 steel tau pom tias nce kev tshem tawm ntawm 10 mus rau 15 feem pua ​​​​ua rau muaj kev txhim kho tseem ceeb hauv kev ua haujlwm ntawm ntug, txhawb ntxiv tias keeb kwm 10 feem pua ​​​​txoj cai tsis siv rau cov ntaub ntawv no. Cov txiaj ntsig zoo dhau los ua qhov zoo dua hauv ntau daim ntawv thov AHSS vim tias thaj tsam pob txha propagates mus rau hauv cov seem slug es tsis yog tsom rau ntawm cov cab cab hauv paus, khaws cia qhov txwv ntug ductility tseem nyob rau hauv nqes dej.

Aluminium thiab Stainless Steel Kev txiav txim siab tshwj xeeb

Aluminium alloys qhia txog kev sib tw sib txawv. Lawv elastic modulus yog kwv yees li ib - peb ntawm cov hlau (kwv yees li 70 GPa), uas txhais tau hais tias strip springback tom qab notching ua raws li qhov sib txawv kiag li. Ib qho kev tsis zoo ntawm lub qhov rooj hauv aluminium springs rov qab kwv yees li peb zaug ntau dua li cov hlau ntawm qhov sib npaug ntawm lub zog tawm los, ua tab - rau - hnab tshos sau npe tsawg dua tshwj tsis yog them nyiaj nrog overbend los yog lub hnab ris nruj dua.

Raws liMetalForming Magazine sau ntawv, ntau qib tsheb ntawm txhuas daim ntawv zoo li 100,000-PSI tawm los- lub zog steel tab sis tsuas yog kwv yees li ob feem peb lub peev xwm ncab. Lawv cov kev ua haujlwm hardening tus cwj pwm thiab qhov chaw saum npoo sib txawv txaus los ntawm cov hlau uas cov qauv tsim qauv yuav tsum tsis txhob siv ncaj qha. Notch ntug zoo nyob rau hauv aluminium nyhav mus rau gummier, tsawg dua cov cheeb tsam tawg vim hais tias cov khoom ductility tso cai ntau deformation ua ntej sib cais. Slug rub txoj kev pheej hmoo nce hauv qhov zoo thaib teeb tsa vim yog txhuas txoj kev nyiam ua raws li cov punch nto hauv qab compression.

Stainless hlau, tshwj xeeb tshaj yog cov qib austenitic zoo li 304 thiab 316, muab cov kev ua haujlwm siab hardening nrog cov elongation siab. Kev tsim stainless yuav tsum tau kwv yees li ob zaug ntawm lub zog xovxwm ntawm cov hlau me me vim qhov kev ua haujlwm hnyav hnyav. Ntawm lub hauv paus tsis zoo ntawm kev teeb tsa tsis zoo, kev ua haujlwm lancet thiab khoov tuaj yeem nyob hauv zos ob npaug ntawm cov khoom siv hauv paus. Txawm li cas los xij, cov hlau tsis muaj steel muaj qhov seem seem txaus uas cov hauv paus hniav tsis zoo tsis tshua tawg thaum lub sij hawm tsim tom ntej, muab cov hauv paus radii muaj siab dav.

Qhov teeb meem tseem ceeb nrog stainless yog clearance rhiab heev. Ib qho 10 feem pua ​​​​ntawm kev tuag tshem tawm, tus qauv rau cov hlau me me, ua rau qhov phem tshaj qhov ua tau burr qhov siab hauv stainless raws li kev tshawb fawb Dayton Progress. Optimized clearances rau stainless thais txiav feem ntau poob ntawm 12 thiab 15 feem pua, sib npaug ntug zoo tiv thaiv lub siab txiav quab yuam uas ua rau cov punch hnav.

Cov lus saum toj no qhia txog kev sib raug zoo: raws li cov khoom siv zog nce thiab elongation txo qis, qhov kev nyiam ntawm engineering hloov mus rau qhov zoo. Lub laj thawj zoo sib xws. Cov kev teeb tsa zoo thawb kev puas tsuaj rau hauv cov khoom siv pov tseg es tsis yog tsom rau ntawm cov cab cab uas nws sib txuas los ntawm kev ua haujlwm tom ntej. Cov ntaub ntawv uas muaj ductility txaus thiab kev ua haujlwm hnyav tuaj yeem ua rau cov hauv paus tsis zoo tsis muaj teeb meem; cov ntaub ntawv nyob ze lawv cov formability txwv tsis tau.

Ib qho ntxiv yuav tsum tau saib xyuas. Lub modulus ntawm elasticity ntawm steel tseem yuav luag tas li tsis hais qib, tab sis txhuas qhov qis dua modulus tsim ib qho chaw sib txawv ntawm qhov chaw pib. Cov kws tsim qauv siv rau kev tsim cov ntawv tsis zoo rau cov hlau pom tias tib lub geometry hauv aluminium yields unpredictable tab heights, inconsistent hnab tshos kev koom tes, thiab ntev sau npe drift. Kev them nyiaj nrog cov hnab tshos tob lossis cov yam ntxwv ntawm lub kaum ntse ntse ntxiv qhov nyuaj uas tsis tuaj yeem ua pov thawj cov khoom txuag los ntawm kev teeb tsa tsis zoo.

Cov ntaub ntawv no -kev txwv tsis pub piav qhia tias vim li cas cov neeg tsim khoom muaj kev paub txog tuag pib txhua qhov kev txiav txim siab hla dhau los ntawm kev tshuaj xyuas cov ntaub ntawv cov ntaub ntawv. Yield zog, qhov kawg tensile zog, tag nrho elongation, thiab n-tus nqi (ua hauj lwm hardening exponent) ua ke txhais lub qhov rais tsim. Sab nraum lub qhov rais, txawm tias zoo kawg nkaus machined tooling nrog zoo tagnrho clearances yuav tsim cov npoo uas tawg, tabs uas lub caij nplooj ntoos hlav tawm ntawm kev sau npe, los yog cov nqa khoom uas sib cais ntawm thawj downstream tsim chaw nres tsheb. Geometry parameters thiab tuag layout kev txiav txim siab ua raws li los ntawm, tsis yog ua ntej, qhov kev tshuaj xyuas cov khoom siv no.

Notch Geometry Parameters thiab Progressive Die Layout

Cov khoom siv txhais tau tias lub qhov rais tsim. Geometry parameters sau nws. Qhov tob, dav, kaum radii, thiab angular kev sib raug zoo ntawm ib tug bypass notch txhais metallurgical txwv rau hauv lub cev tooling qhov ntev uas yog xa cov kev tswj xyuas sawb txhim khu kev qha los yog qhia cov teeb meem ntau lawm. Txhua qhov parameter cuam tshuam nrog cov khoom tuab, sawb dav, thiab qhov kev ncua deb ntawm txoj hauv kev uas xav tau kev txiav txim siab sib koom ua ke es tsis yog cais tshwj xeeb.

Notch Qhov tob thiab dav kev sib raug zoo rau Sawb Geometry

Notch qhov tob yog qhov kev ncua deb ntawm qhov txiav tawm lossis tab txuas sab hauv los ntawm ntug kab. Cov ntawv sib sib zog nqus muab kev sib koom ua ke zoo dua qub nrog cov nres nres lossis lub hnab tshos, ua rau overfeed lub cev tsis tuaj yeem txawm tias nyob rau hauv kev ua kom nrawm nrawm. Tab sis qhov tob los ntawm tus nqi. Hauv kev teeb tsa zoo, txhua qhov ntxiv millimeter ntawm qhov tob tshem tawm cov neeg nqa khoom hla-section, txo lub sijhawm ntawm inertia uas ua rau lub sawb ruaj khov thaum ua haujlwm hlau ntawm cov chaw nres tsheb hauv qab. Hauv kev teeb tsa tsis zoo, qhov tob ntau dua txhais tau tias lub lanced tab ntev dua uas yuav tsum tau tshem tawm ntau dua los ntawm txhua qhov kev tuag tom ntej.

Cov lus qhia ua kom zoo rau qhov tob tob poob ntawm 1.5 thiab 3.0 npaug ntawm cov khoom tuab. Hauv qab 1.5t, qhov kev sib koom ua ke yog qhov ntiav heev kom ntseeg tau kom ntes tau cov lus tsa suab ua ntej lub voj voog xovxwm. Tshaj li 3.0t ntawm cov nqa nqa nqaim, qhov seem hla -section yuav tsis muaj qhov tawv tawv los tiv thaiv pub- kev taw qhia buckling. Rau qhov tsis zoo, tab ntev (qhov ua haujlwm sib npaug ntawm qhov tob) feem ntau yog li ntawm 2.0 mus rau 4.0 npaug ntawm cov khoom tuab, nrog rau qhov ntev ntev uas xav tau los xyuas kom meej lub rooj zaum khoov siab hauv nws lub hnab ris.

Notch dav yog txwv los ntawm qhov kev ncua deb, qhov ntev ruaj khov uas txhais tau hais tias nyob deb npaum li cas ntawm txoj hlua txuas ntxiv mus rau ib qho xovxwm stroke. Lub notch yuav tsum nqaim txaus kom haum rau hauv ib qho kev nce qib uas tsis muaj qhov sib tshooj ntawm qhov chaw nres tsheb tom ntej, tab sis dav txaus los muab qhov chaw nres tsheb txaus. Ib qho kev pib pib yog qhov dav ntawm 40 thiab 60 feem pua ​​​​ntawm qhov kev ncua deb, tawm hauv cov khoom siv choj txaus ntawm ob sab ntawm qhov taw qhia kom muaj kev ncaj ncees ntawm kev loj hlob. Raws li sawb layout tsim qauv sau tseg, tus choj thickness ntawm cov nta yuav tsum yog tsawg kawg yog 1.25 mus rau 1.5 lub sij hawm cov ntaub ntawv thickness los tiv thaiv seem twisting thiab cab kuj tsis ua hauj lwm.

Sawb dav txiav txim seb puas yog ib qho -sab lossis dual- sab tsis zoo. Cov strips nqaim (feem ntau qis dua 50 mm rau cov khoom siv ntsuas ntsuas) tau txais txiaj ntsig los ntawm ib qho -side notching kom khaws cia siab tshaj plaws ntawm cov cab kuj dav ntawm ntug ntug. Dav strips feem ntau siv dual-sab notching nrog qhov tob tob ntawm txhua ntug, faib tus ntoo khaub lig-section txo symmetrically thiab tiv thaiv lub lateral feed drift uas tshwm sim thaum asymmetric rog ua rau cov cab kuj thaum lub sij hawm kev loj hlob.

Corner Radius Design thiab Stress Concentration Management

Suab me me? Lub kaum sab xis ntawm qhov kev hloov pauv ntawm qhov kev hloov pauv yog ib qho ntawm qhov ua tau zoo tshaj plaws ntawm tag nrho cov kab nrib pleb. Ib lub kaum ntse ntse sab hauv ntawm qhov zoo thaib concentrates kev ntxhov siab hauv cov cuab yeej xuas nrig, ua kom nrawm nrawm ntawm qhov ntawd. Lub hauv paus ntse ntse nyob rau ntawm qhov tsis zoo thaib concentrates kev ntxhov siab nyob rau hauv cov khoom siv sawb, tsim kom tawg qhov chaw pib uas tuaj yeem nthuav tawm hauv qab cov dej ntws hauv cov khoom thauj.

Qhov kev ntxhov siab concentration (Kt) ntawm lub kaum ntse ntse ua raws li kev sib raug zoo tswj hwm los ntawm qhov piv ntawm lub vojvoog rau qhov tob. Rau lub kaum sab xis nrog lub hauv paus vojvoog r thiab qhov tob d, Kt nce sai li r / d poob qis dua 0.25. Ntawm r/d=0.1, cov ntsiab lus concentration tuaj yeem tshaj 4.0, lub ntsiab lus hauv cheeb tsam kev ntxhov siab nce mus txog plaub npaug ntawm tus nqi nominal hauv cov cab kuj. Rau cov ntaub ntawv uas tsis muaj elongation, theem ntawm concentration ntau tshaj qhov tawg strain nyob rau hauv lub hauv paus ua ntej lub sawb txawm mus txog rau thawj qhov chaw nres tsheb.

Cov tswv yim radius specifications nyob ntawm ob qho tib si cov khoom siv elastic modulus hlau nthuav tawm thiab lawv lub peev xwm elongation:

• Me me hlau- Qhov tsawg kawg nkaus sab hauv lub vojvoog ntawm 0.5t ntawm cov ces kaum; 1.0t ntawm cov hauv paus tsis zoo uas qhov kev sib txuas tom qab tshwm sim nyob ze.
• Qib AHSS- Yam tsawg kawg nkaus 1.0t ntawm txhua lub ces kaum sab hauv; 1.5t los yog ntau dua ntawm cov hauv paus hniav tsis zoo vim muaj kev txwv ntug ductility.
• Aluminium alloys- Yam tsawg kawg nkaus 0.75t ntawm cov ces kaum sab hauv; Cov radii loj dua xav tau ntawm cov hauv paus tsis zoo kom haum rau cov khoom siv nyiam mus rau kev nthuav tawm ntawm gummy tawg.
• Stainless hlau- Yam tsawg kawg nkaus 1.0t ntawm cov ces kaum sab hauv kom them nyiaj rau kev ua haujlwm hnyav ntawm qhov txiav ntug.

Cov radii no kuj cuam tshuam rau cov cuab yeej. Punch cov ces kaum nrog radii hauv qab 0.3 hli hauv cov cuab yeej hardened steel tsim micro-chipping nyob rau hauv thawj 50,000 strokes ntawm feem ntau cov khoom siv. EDM hlau- txiav cov profiles yuav tsum tau hais kom meej radii raws li qhov loj me me es tsis yog kev cia siab rau lub ntuj xaim hluav taws xob los txhais lub kaum sab xis, vim tias txoj kab uas hla ntawm kev yaig thaum txiav tuaj yeem tsim cov radii tsis sib xws uas zoo txaus rau ntawm daim ntawv tab sis ua tsis tiav.

Pilot Placement Interaction nrog Notch Positioning

Bypass notches thiab pilot pins ua hauj lwm tib lub hom phiaj, raug strip positioning, tab sis nyob rau hauv txawv precision theem. Lub notch muab kev tswj nruj, tiv thaiv tag nrho cov overfeeds thiab tsim ib qho chaw pib rov ua dua rau txhua qhov xovxwm. Pilot pins muab kev tswj kom zoo, kho rau qhov ua yuam kev me me uas sib sau los ntawm cov khoom noj yob, cov khoom siv springback, thiab thermal expansion ntawm lub sawb thaum lub sij hawm siab - khiav ceev.

Lawv qhov sib txawv yuav tsum tau sib koom ua ke. Yog hais tias tus tsav tus pin nyob ze dhau ntawm ib qho kev hla dhau, ob lub ntsej muag sib tw rau txoj haujlwm. Lub notch ntes cov hlua ntawm ib txoj hauj lwm thaum tus tsav sim hloov nws mus rau ib qho txawv me ntsis raws li nws nkag mus rau hauv lub qhov. Qhov kev tsis sib haum xeeb no tsim kev ntxhov siab ntawm tus tsav tus pin, elongation ntawm tus tsav lub qhov, thiab qhov tsis sib haum ntawm qhov chaw uas tshwm sim raws li qhov loj me ntawm cov khoom tiav.

Tus txheej txheem txoj hauv kev muab qhov kev hla dhau ntawm qhov chaw nres tsheb ib qho (lossis thawj qhov chaw txiav) thiab qhov chaw tsav tsheb ntawm ob thiab peb. Qhov kev ua ntu zus no ua kom lub notch tsim txoj haujlwm ntxhib ua ntej, tom qab ntawd cov kws tsav dav hlau kho nws ua ntej kev ua haujlwm tseem ceeb lossis kev ua haujlwm loj pib. Rau kev tuag nrog ntau qhov chaw nres tsheb, cov kws tsav dav hlau ntxiv tau muab tso rau hauv ib ntu ntawm txhua peb mus rau tsib qhov kev nce qib, tab sis ib txwm offset los ntawm qhov chaw nres tsheb los ntawm tsawg kawg ib qho kev nce qib.

Raws li cov txheej txheem tsim kev tuag tau pom zoo, yog tias yuav tsum muaj ob pawg neeg tsav dav hlau, ob qho tib si yuav tsum tau xuas nrig ntaus ntawm tib lub chaw nres tsheb kom tswj tau lawv cov txheeb ze raug. Pilot qhov xuas nrig ntaus ntawm cov chaw sib txawv tau txais qhov kev ua yuam kev ntawm txhua qhov kev nce qib ntawm lawv, degrading qhov tseeb heev uas lawv tau muab.

Cov txheej txheem kev txiav txim siab tsim ua ntu zus uas tswj hwm tag nrho cov kev txwv no ua raws li kev xav tau hierarchy:

1. Txiav txim siab qhov kev ncua deb- Qhov no yog kho los ntawm ib feem geometry thiab txhais qhov siab tshaj plaws muaj qhov chaw rau txhua lub strip nta xws li cov ntawv taw qhia, cov tsav tsheb, thiab cov chaw nqa khoom.
2. Tsim kom muaj kab dav- Muab xam los ntawm ib feem ntawm qhov loj me me ntxiv rau cov neeg nqa khoom lub vev xaib ntxiv rau txhua qhov kev txiav tawm ntug, teeb tsa tag nrho tus ntoo khaub lig- ntu muaj rau kev sib koom ua ke.
3. Xaiv cov notch hom raws li cov khoom thiab geometry- Cov khoom siv (nrog rau hauv ntu ua ntej) ua ke nrog cov kab dav dav thiab cov khoom nqa hnyav uas yuav tsum tau txiav txim seb qhov zoo, qhov tsis zoo, lossis tsis muaj qhov tsis zoo.
4. Txhais qhov loj me me- Qhov tob, dav, thiab lub kaum sab xis radii tau teev nyob rau hauv cov kev txwv tsim los ntawm cov kauj ruam ib txog rau peb, ntsuas kev sib koom ua ke kev ntseeg tau tawm tsam kev ncaj ncees ntawm txoj hlua khi.
5. Coordinate pilot placement- Qhov chaw tsav qhov chaw raug xaiv los ua kom tiav qhov chaw nres tsheb tsis muaj teeb meem, sib nrug los kho qhov yuam kev pub noj tom qab qhov chaw nres tsheb.

Strip layout optimization hloov pauv muaj txiaj ntsig nyob ntawm seb hom kev xaiv twg xaiv. Cov txiaj ntsig zoo noj cov kab dav dav, cov khoom siv zes software rau qhov ntev ntawm cov khoom siv suav nrog yuav tsum suav rau qhov tob tob thaum xam qhov tsawg kawg nkaus strip dav. Ib tug 2 hli sib sib zog nqus zoo notch ntawm txhua sab ntxiv 4 hli rau tag nrho cov kauj dav yuav tsum tau, uas nyob rau hauv ib tug ntau lawm khiav ntawm lab ntawm qhov chaw txhais mus rau hauv cov khoom ntsuas tus nqi. Niaj hnub nimno nesting algorithms ua qhov no nyob rau hauv cia li, tab sis cov input tsis yuav tsum muaj kev cuam tshuam qhov tseeb notch geometry es tsis yog ib tug generic nyiaj.

Cov ntawv tsis zoo siv xoom ntxiv strip dav tab sis ntxiv qhov nyuaj rau kev tsim kho tuag. Txhua qhov chaw nres tsheb xav tau kev pab geometry rau lub tab protruding, nce machining lub sij hawm thiab tus nqi thaum tuag tsim. Kev lag luam tawm -tawm yog kev lag luam: cov ntawv tsis zoo txuag cov khoom siv thoob plaws hauv kev tsim khoom thaum cov txiaj ntsig zoo txuag cov cuab yeej siv thaum lub sij hawm tuag. Qhov twg yog qhov tseem ceeb yog nyob ntawm qhov ntim ntau lawm, cov khoom siv tus nqi ib kilogram, thiab lub sij hawm luv luv tuag.

Cov kev ntsuas geometric no tsis muaj nyob hauv kev sib cais. Txhua qhov ntev cascades rau hauv kev txiav txim siab txog strip layout, pilot lub tswv yim, seem tuav system tsim, thiab tuag tu ncua sij hawm. Cov kauj ruam tom ntej no yog kev teeb tsa cov kev sib cuam tshuam sib txawv rau hauv cov txheej txheem kev txiav txim siab uas pab cov engineers xaiv qhov kev teeb tsa zoo ua ntej cog lus rau steel.

Kev txiav txim siab lub moj khaum rau kev xaiv hom kev xaiv

Geometry tsis thiab cov khoom siv txhais tau tias yog dab tsi. Lub moj khaum kev txiav txim siab txhais tau tias qhov ua tau zoo. Cov kws ua haujlwm ntsib txoj haujlwm tshiab uas muaj kev vam meej tsis tshua muaj teeb meem nrog kev suav qhov tob lossis xaiv qhov feem pua ​​​​ntawm kev tshem tawm thaum xaiv qhov kev xaiv. Cov lus nug nyuaj dua los ua ntej: qhov tuag no puas yuav siv cov txiaj ntsig zoo, qhov tsis zoo, lossis tsis muaj kev hla hla txhua? Cov lus teb nyob ntawm yam tsawg kawg yog xya qhov sib txawv ntawm qhov sib txawv, thiab tau txais nws tsis ncaj ncees lawm cascades rau hauv kev hloov kho kev hloov pauv, kev hloov pauv lub tswv yim, thiab kev saib xyuas mob taub hau uas pheej mus rau lub neej ntawm lub cuab yeej.

Dab tsi hauv qab no yog ib txoj hauv kev rau qhov kev txiav txim siab, teeb tsa nyob ib puag ncig cov yam ntxwv uas tau ntsib cov cuab yeej thiab cov neeg ua haujlwm tuag ntsuas, qee zaum intuitively, thaum cog lus rau ib qho kev teeb tsa.

Thaum Yuav Siv Qhov Zoo Bypass Notches

Cov txiaj ntsig zoo tau txais lawv qhov chaw nyob rau hauv qhov tuag qhov chaw huv si ejection, cov khoom siv zog txwv, thiab kev tsim kho ncaj nraim yog qhov tseem ceeb tshaj qhov tawv tawv thiab cov khoom txuag. Xav txog qhov xwm txheej: koj tab tom khiav AHSS ntawm 1.2 hli tuab ntawm lub nqaim nqaim, pub rau 12 chaw nres tsheb ntawm 200 strokes ib feeb. Cov khoom yield kev ntxhov siab tawm yuav luag tsis muaj chaw rau ntug strain ntawm lub hauv paus tsis zoo. Ib qho kev teeb tsa zoo thawb tag nrho cov pob txha puas rau hauv cov khoom pov tseg, khaws cia qhov me me ntug ductility tseem nyob ntawm tus cab kuj.

Cov txiaj ntsig zoo kuj yog qhov kev xaiv ua ntej thaum:

• Cov khoom siv tau tawm los ntawm kev ntxhov siab ntawm cov hlau ntau tshaj 600 MPa, qhov twg cov hauv paus hniav tawg yuav muaj kev pheej hmoo ntau dua cov khoom txuag los ntawm kev teeb tsa tsis zoo.
• Cov tuag muaj tsawg tshaj li yim lub chaw nres tsheb, ua rau cov downstream clearance zoo ntawm qhov tsis zoo notches tsawg tseem ceeb.
• Kev tshem tawm slug yog twb tau tsim rau hauv cov qauv tsim (khoom khib nyiab, lub tshuab nqus tsev, los ntawm - tshem tawm).
• Sawb dav muab cov neeg nqa khoom loj hla -section, txhais tau tias cov khoom tshem tawm los ntawm qhov thais tsis cuam tshuam rau kev noj zaub mov tsis muaj zog.
• Cov txheej txheem pub noj yog nyob ntawm qhov sib thooj inductive sensor lossis lwm yam kev tiv thaiv hluav taws xob tuag uas lees paub txoj haujlwm strip, ua rau lub cev sau npe ntawm qhov tsis zoo tab tsis tshua muaj teeb meem.

Kev lag luam tawm - yog kev siv cov khoom siv. Txhua qhov txiaj ntsig zoo slug yog yuav coil Tshuag uas dhau los ua seem. Ntawm qhov tuag tsim 5 lab qhov chaw hauv ib xyoos, txawm tias ib qho me me ntxiv cov khoom siv ntsuas tau. Txawm hais tias tus nqi ntawd puas tsim nyog nyob ntawm seb nws piv li cas rau qhov kev pheej hmoo - tus nqi hnyav ntawm cov cab kuj tawg, kev sib tsoo tuag, lossis cov khoom siv ntxiv uas xav tau rau kev tshem tawm qhov tsis zoo.

Thaum Yuav Siv Tsis Zoo Bypass Notches

Cov ntawv tsis zoo ci ntsa iab thaum qhov tawv tawv tsis yog - sib tham tau, cov khoom siv siv lub hom phiaj yog nruj, thiab cov khoom nws tus kheej tuaj yeem ua haujlwm rau kev ua haujlwm tawv tawv ntawm cov hauv paus hniav. Xav txog cov cab kuj dav hauv cov hlau me me uas khiav los ntawm 20 chaw nres tsheb nrog kev ua haujlwm uas siv cov khoom siv khoov nyob ze ntawm cov npoo npoo. Ib qho txiaj ntsig zoo ntawm qhov chaw ntawd ua rau cov neeg nqa khoom tsis muaj zog uas nws xav tau lub zog tshaj plaws. Ib qho kev tsis zoo khaws cia tag nrho cov ntoo khaub lig-section thiab muab kev sau npe zoo tshaj peb-.

Cov xwm txheej uas nyiam cov kev tsis zoo muaj xws li:

• Nqaim sawb dav qhov uas tshem tawm cov khoom siv rau qhov zoo thaib yuav txo cov cab kuj nruj hauv qab qhov pib rau kev noj zaub mov zoo.
• Cov ntaub ntawv nrog elongation saum toj no 25 feem pua ​​thiab nruab nrab ua hauj lwm hardening tus nqi uas zam lub strained thaum lub sij hawm tab lancing thiab dabtsi yog khoov.
• Qhov chaw nres tsheb siab suav qhov twg qhov kev ua yuam kev pub mis los ntawm coil feeder imprecision xav tau cov neeg kho tshuab nres es tsis yog sensor-raws li kev tshawb nrhiav ib leeg.
• Ib qho -ib sab cab kuj tsim qhov twg lub tab tuaj yeem raug daig hauv lub tshuab nqa bar, ib txhij muab kev tso npe thiab tiv thaiv tus neeg nqa khoom sab nraud.
• Ntau cov khoom ntim siab txaus uas cov khoom siv txuag tau los ntawm kev tshem tawm qhov zoo thaib slugs ua pov thawj qhov kev tsim kho tus nqi ntxiv rau cov hnab ris tshem tawm.

Qhov teeb meem tseem ceeb yog kev tshem tawm hauv qab. Txhua qhov chaw nres tsheb tuag yuav tsum ua kom haum rau lub tab tab, thiab txhua lub voj voog kev saib xyuas yuav tsum xyuas kom meej tias cov hnab tshos nyob twj ywm huv thiab tsis muaj kev puas tsuaj. Nyob rau hauv tuag nrog txoj kev cam systems los yog nruj ntsug clearances, lub cev qhov chaw rau tab nyem yuav tsuas tsis muaj nyob.

Thaum Tsis Muaj Bypass Notches Yuav Tsum Tau

Tsis yog txhua qhov kev tuag tuag xav tau ib qho bypass thaib. Thaum cov xwm txheej yog lawm, tshem tawm cov ntawv tshem tawm tag nrho txuag cov khoom siv, ua kom yooj yim rau kev tsim kho, thiab tshem tawm ib qho khoom siv ntxiv los ntawm lub sijhawm siv. Cov lus nug yog seb koj cov txheej txheem tuaj yeem tswj hwm kev noj zaub mov zoo thiab qhov chaw tsis muaj cov khoom siv thaub qab ib qho kev pabcuam.

Tsis muaj-ntaus ntawv ua haujlwm yuav siv tau thaum:

• Lub coil feed system muab qhov tseeb qhov chaw nyob hauv 0.05 hli lossis zoo dua, txheeb xyuas los ntawm cov ntaub ntawv muaj peev xwm kawm.
• Cov khoom tuaj muaj tsawg kawg nkaus ntug camber (feem ntau yog slitting los ntawm ib tug siab - zoo chaw pab cuam nrog post- slit edge conditioning).
• Tuag tiv thaiv sensors yog ntsia, calibrated kom zoo, thiab yeej tsis bypassed thaum lub teeb.
• Cov neeg ua haujlwm thiab cov neeg ua haujlwm teeb tsa tau txais kev cob qhia zoo txog kev noj zaub mov tsis zoo thiab paub txog misfeed.
• Ib feem geometry suav nrog cov yam ntxwv ntawm cov chaw pib thaum ntxov (ib puag ncig trims lossis qhov loj pilots) uas muaj kev tiv thaiv overfeed los ntawm kev tsim cov chaw nres tsheb.

Raws li Art Hedrick sau tseg, yog tias koj cov khoom xa tuaj tsis muaj qhov hnyav camber, koj cov neeg ua haujlwm tau txawj ntse, misfeeds tsis tshua muaj, thiab kev tiv thaiv tuag ib txwm ua haujlwm zoo, koj yuav tsis xav tau ib qho thaib. Tab sis ua tau raws li tag nrho cov txheej txheem ib txhij yog qhov tsis tshua muaj. Feem ntau cov neeg tsim khoom tuag tsim ib qho thais rau hauv lub cuab yeej thiab tawm qhov kev txiav txim siab tshem tawm mus rau cov stampers uas paub txog lawv lub peev xwm ua haujlwm.

Qhov kev pheej hmoo suav yog asymmetric. Cov khoom siv tus nqi ntawm lub suab nrov tshaj lab ntawm qhov chaw yuav tag nrho ob peb txhiab daus las. Ib qho kev sib tsoo tuag los ntawm kev noj ntau dhau tuaj yeem raug nqi ntau pua txhiab hauv kev kho, lub sijhawm poob qis, thiab cov sijhawm ua haujlwm tsis tiav. Rau cov cuab yeej tseem ceeb qhov chaw ua haujlwm tseem ceeb, txoj kev saib xyuas kev nyiam nyiam suav nrog kev ntaus cim tshwj tsis yog tias tsis muaj ntaub ntawv, txheej txheem - txheeb xyuas qhov laj thawj kom tshem tawm nws.

Notch Hom Xaiv Cov Txheej Txheem Matrix

Cov lus hauv qab no suav nrog cov kev txiav txim siab rau hauv ib qho kev sib piv. Txhua kab sawv cev rau qhov sib txawv uas cuam tshuam rau kev xaiv, thiab txhua kab qhia tau hais tias qhov hloov pauv hloov qhov nyiam mus rau ib qho kev teeb tsa tshwj xeeb.

Koj yuav pom tias tsis muaj ib yam dab tsi dictates qhov tshwm sim ntawm kev sib cais. Ib txoj hlua nqaim hauv cov hlau me me uas khiav ntawm cov ntsiab lus siab ntim siab mus rau qhov tsis zoo. Tib txoj hlua nqaim hauv DP 980 ntawm qhov ntim nruab nrab thim rov qab cov lus pom zoo tag nrho. Lub tensile modulus steel cov khoom pov thawj tsis hloov ntawm cov qib no, tab sis tus cwj pwm tawg ntawm lub hauv paus hauv paus hloov pauv loj heev uas tag nrho cov teeb tsa yuav tsum ua raws.

Kev xaiv qhov ntsuas tsis yog ib qho kev txiav txim siab cais. Nws cascades rau hauv strip layout dav xam, pilot lub tswv yim thiab spacing, seem tuav infrastructure, downstream chaw nres tsheb clearance, thiab tuag tu ncua ncua. Hloov cov thais hom tom qab tuag tsim tau nce dhau lub tswv yim theem feem ntau yuav tsum tau rov ua dua tag nrho cov kab txaij.

Cov nyhuv cascading no yog vim li cas lub moj khaum kev txiav txim siab tseem ceeb tshaj plaws ntawm cov qauv tsim ntxov tshaj plaws, ua ntej sawb dav tau cog lus rau coil kev yuav khoom specifications, ua ntej tuag khau qhov ntev yog ua tiav, thiab ua ntej chaw nres tsheb sib txuas locks hauv hnab ntawv clearance. Cov kws kho tsheb uas ncua qhov kev txiav txim siab hom kev txiav txim siab feem ntau pom tias lawv cov kev xav ntawm cov kab txaij embedded ib qho kev xaiv implicitly, ib qho uas yuav tsis ua raws li cov khoom siv lossis cov kev xav tau ntau lawm uas tshwm sim thaum tsim cov ncauj lus kom ntxaws.

Cov txheej txheem txheej txheem tshem tawm qhov tsis meej. Nws txhais cov kev sib cuam tshuam ntawm cov ntaub ntawv tshawb fawb, tuag geometry, thiab kev lag luam tsim khoom rau hauv qhov kev ntsuas rov ua dua uas muab cov txiaj ntsig zoo ib yam ntawm cov haujlwm. Tab sis lub moj khaum hais txog lub hom phiaj tsim. Yuav ua li cas tshwm sim thaum lub hom phiaj ntawd ua tau raws li qhov tseeb ntawm kev tsim khoom thiab qee yam tsis raug? Strip misfeeds, slug rub, hnav ntxov ntxov, thiab cov cab kuj ua tsis tiav txhua qhov rov qab mus rau cov kev sib raug zoo hauv kev tshawb fawb tau hais thoob plaws hauv tsab xov xwm no, thiab kuaj xyuas lawv yuav tsum tau txuas cov tsos mob rau cov hauv paus hauv paus los ntawm tib lub hauv paus ntsiab lus uas tswj hwm tus qauv tsim.

Troubleshooting Bypass Notch Failure Modes

Lub qhov dej -tsim bypass thais tuaj yeem khiav ntau lab lub voj voog yam tsis muaj teeb meem. Ib tus tsim tsis zoo tshaj tawm nws tus kheej nyob rau hauv thawj txhiab strokes los ntawm misfeeds, burrs, rub slugs, los yog cov neeg nqa khoom tawg. Qhov kev ntxhov siab? Cov tsos mob no feem ntau zoo ib yam ntawm cov xovxwm hauv pem teb tsis hais seb lub hauv paus puas yog geometric, metallurgical, lossis clearance- cuam tshuam. Kev sib cais ib leeg los ntawm lwm qhov yuav tsum tau txuas cov pov thawj pom rov qab mus rau cov tshuab tawg thiab cov khoom siv coj los tswj kev ua haujlwm tsis zoo.

Dab tsi hauv qab no yog qhov kev puas tsuaj ntawm tsib feem ntau dhau los ntawm kev tsis ua haujlwm tsis ua haujlwm, lawv cov hauv paus kev tshawb fawb, thiab cov txheej txheem kuaj mob uas ua rau kev kho mus ntev es tsis yog thaj chaw ib ntus.

Tshem tawm Misfeed thiab tsis txaus Notch koom nrog

Thaum lub sawb nce mus deb dhau los yog tsis deb txaus, txhua qhov chaw nres tsheb hauv qab ua cov khoom siv tsis raug. Qhov chaw tsaws tawm -nruab nrab, khoov daim ntawv ntawm qhov chaw tsis raug, thiab qhov sib txawv ntawm qhov sib txawv nce mus txog thaum qhov chaw tsis kuaj xyuas. Nyob rau hauv cov xwm txheej hnyav, cov misfeed ua rau tag nrho tuag poob, ua rau cov punches, tuag blocks, thiab cov txheej txheem qhia ib txhij.

Kev sib koom tes tsis txaus yog qhov ua txhaum loj tshaj plaws. Lub notch muaj nyob rau ntes strip motion ntawm ib tug meej point. Yog tias qhov chaw sib koom ua ke yog ntiav dhau, hnav, lossis geometrically tsis sib haum rau qhov nres nres, lub strip overshoots ua ntej xovxwm mus. Progressive tuag teeb meem kev tshawb fawb tau lees paub tias strip positioning instability feem ntau yog qhov teeb meem ntxov tshaj plaws, tshwm sim ua ntej pom qhov tsis xws luag tshwm sim.

Lub hauv paus ua rau txuas ncaj qha mus rau qhov kev ntxhov siab thiab deformation cov ntsiab cai tau them ua ntej. Ib qho txiaj ntsig zoo uas tau poob qhov tob los ntawm kev sib tw punch hnav tsis tsim kom muaj kev sib koom ua ke tag nrho cov hnab tshos geometry. Lub nres thaiv tiv thaiv ib qho chaw ntiav, thiab nyob rau hauv pub acceleration rog, lub sawb lub zog kov yeej qhov chaw tiv tauj tsawg. Rau qhov tsis zoo tsis zoo, springback ntawm lub hauv paus tab yog cov txheej txheem raug. Yog hais tias cov khoom txwv tsis pub dhau ntawm cov hlau los yog hlau alloy tshaj qhov kev xav ntawm tus qauv tsim, lub tab tsis khoov rau nws lub kaum sab xis, txo qis npaum li cas nws zaum hauv lub hnab ris.

• Txheeb xyuas qhov tob tob ntawm qhov qub specification- Ntsuas qhov kev sib koom ua ke qhov tob nrog tus pin gauges lossis optical piv. Muab piv rau qhov tsawg kawg nkaus 1.5t qhov pib rau kev tiv thaiv kev tiv thaiv.
• Tshawb xyuas qhov chaw nres tsheb- Peening, cov khoom tsim, lossis hnav ntawm lub ntsej muag nres txo qis kev sib koom tes zoo txawm tias qhov ntsuas nws tus kheej yog qhov tseeb.
• Tshawb xyuas lub sijhawm pub zaub mov- Yog hais tias lub feeder tso tawm lub sawb lig dhau lawm, cov kws tsav dav hlau sim sau npe cov khoom uas tsis tau zaum tag nrho tawm tsam qhov chaw nres tsheb, tsim kev tsis sib haum xeeb thiab kev nce qib tsis sib xws.
• Ntsuas tab springback ntawm qhov tsis zoo notches- Sib piv lub kaum sab xis tiag tiag los tsim lub hom phiaj. Cov ntaub ntawv uas muaj zog ntau zog ua rau cov elastic rov qab zoo dua, thiab cov tab yuav tau rov qab los ntawm lub hnab ntim khoom ntau.
• Ntsuam xyuas strip camber- Ntug camber los ntawm coil slitting tuaj yeem tiv thaiv cov sawb los ntawm kev taug qab ncaj, ua rau qhov tsis pom qhov nres nres tom qab txawm tias qhov kev ncua deb yog raug.

Qhov kev kuaj mob tseem ceeb yog seb qhov misfeed zoo ib yam (taw rau lub geometry los yog teeb meem yuam kev) los yog sib quas ntus (taw mus rau dynamic yam xws li pub sij hawm, sawb vibration ntawm ceev, los yog thermal expansion thaum lub sij hawm ncua kev khiav). Tsis tu ncua misfeeds taug qab mus rau qhov ntev static. Intermittent ones trace to process dynamics that only manifest in production conditions .

Slug Pulling thiab Burr Tsim ntawm Notch Edges

Slug rub nyob rau hauv qhov zoo notch configurations yog ib qho ntawm feem kev puas tsuaj tsis ua hauj lwm hom nyob rau hauv kev vam meej stamping. Thaum cov khoom seem ua raws li lub ntsej muag lub ntsej muag thaum lub sijhawm tshem tawm thiab nqa rov qab mus rau qhov chaw ua haujlwm, nws tuaj yeem tsoo ntawm cov punch thiab sawb ntawm cov hlab ntsha tom ntej, ua rau qhov tuag nto, marring ib feem, los yog ua rau ib tug cascade ntawm jammed noj. Raws liArt Hedrick piav qhia, ib leeg rub slug tuaj yeem ua rau muaj kev puas tsuaj rau txhua qhov chaw nres tsheb hauv lub cuab yeej.

Cov kev tshawb fawb taug qab mus rau lub tshuab nqus tsev vacuum thiab clearance geometry. Thaum lub sij hawm txiav, lub slug tsim curvature raws li nws cais los ntawm lub sawb. Huab cua daig nruab nrab ntawm lub nkhaus slug thiab lub ntsej muag tiaj tus punch tsim lub hnab ntim lub tshuab nqus tsev. Cov hlau nyob ib ncig ntawm lub punch perimeter tsim ib lub foob kaw ntom nti thaum shearing, thiab thaum tshem tawm, lub foob no tiv thaiv cov slug los ntawm kev tso tawm. Cov roj nplua nyeem hnyav hnyav ua rau kev sib khi ua haujlwm. Qhov zoo bypass notches yog me ntsis cuam tshuam ntau dua li cov txheej txheem tho kev ua haujlwm vim tias cov slug muaj ib qho dawb ntug uas tuaj yeem flex thiab tuav lub punch thaum lub sijhawm thim rov qab.

Loj txiav clearances compound qhov teeb meem. Nrog me me clearances, lub slug raug yuam mus rau hauv compression thaum txiav thiab decompresses tom qab sib cais, tsim kom muaj kev cuam tshuam haum uas tuav nws hauv matrix tuag. Nrog rau kev tshem tawm loj dua, cov slug tseem me ntsis qis dua tus txheeb ze rau lub matrix qhib thiab tuaj yeem rub tawm dawb nrog cov punch. Kev xaiv cov khoom siv stamping kuj tseem ceeb: cov hlau nplaum xuas nrig ntawm qhov chaw sib tsoo nyiam ferrous slugs tshwj tsis yog cov khoom raug demagnetized tom qab sharpening.

Burr tsim ntawm cov npoo npoo tsim muaj qhov sib txawv tab sis muaj teeb meem cuam tshuam. Cov burrs ntau dhau ntawm qhov kev txiav ntug cuam tshuam nrog kev nqis tes ua haujlwm los ntawm kev ua haujlwm raws li kev ntxhov siab thaum lub sijhawm khoov, tsim kom muaj qhov khawb ntawm cov khoom siv tuag, thiab tiv thaiv cov kab nrib pleb los ntawm kev dag ntawm cov ntaub qhwv. Dab tsi yog qhov kev tawm dag zog ntawm cov ntaub ntawv txheeb ze rau lub zog ntawm kev ua si? Thaum xuas nrig ntaus npoo dull, txiav txiav kev hloov pauv los ntawm kev txiav kom huv mus rau kua muag. Cov khoom siv stretches tshaj nws cov yield strain steel yuav haum ua ntej sib cais, ua elongated burr projections es tsis huv puas.

• Rau slug rub- Tso lub tshuab xuas nrig nrog lub qhov cua kom tawg lub tshuab nqus tsev. Nruab lub caij nplooj ntoos hlav- loaded ejectors hauv punches loj txaus los txais lawv. Xav txog thim rov qab-taper tuag nyees khawm uas tuav slugs hauv compression. Demagnetize tag nrho cov khoom tom qab sib tsoo.
• Rau ntau burr- Ntsuas punch-rau- tuag tshem tawm thiab piv rau cov khoom siv- cov lus qhia tshwj xeeb. Tshawb xyuas cov npoo rau kev sib tw lossis micro- chipping. Tsim kom muaj lub sijhawm ua kom pom tseeb raws li kev suav cov hlab ntsha tawg ntau dua li tos kom pom qhov pom kev loj hlob.
• Rau ob qho tib si ib txhij- Qhov kev sib xyaw no feem ntau qhia txog kev hnav tsoos siab heev. Lub npoo dulled ua rau cov burrs loj dua thaum muaj kev sib txhuam ntawm qhov chaw hnav ua kom muaj zog nqus adhesion. Kev tiv thaiv kev ua kom pom tseeb raws li qhov tseeb ntawm cov hlab ntsha tuaj yeem pab tswj kev txiav cov khoom ruaj khov thiab txo ob qho tib si rub tawm thiab burr tsim ua ntej lawv mus txog qib tseem ceeb.

Premature Die Wear thiab Maintenance Implications

Bypass notch punches thiab tuag opens muaj concentrated hnav rau cov laj thawj hauv paus hauv lawv asymmetric geometry. Tsis zoo li tus qauv puag ncig piercing punch uas faib cov quab yuam sib xws nyob ib puag ncig nws ib puag ncig, ib qho kev xuas nrig ntaus tau txwv lub ntsej muag (txiav tawm tsam tus neeg nqa khoom lub cev) thiab lub ntsej muag tsis pom kev (txiav ntawm qhov qhib ntug). Qhov kev tsis txaus ntseeg no txhais tau tias ib sab ntawm cov cuab yeej ua haujlwm hnyav dua li lwm qhov, txhua qhov mob stroke.

Qhov kev txwv tsis pub muaj kev cuam tshuam ntau dua vim tias cov khoom thauj ib puag ncig tiv thaiv deformation. Tshaj li ntau pua txhiab lub voj voog, lub ntsej muag no txhim kho ntug kev sib tw thiab micro- chipping ua ntej. Sab tsis muaj kev txwv, txiav rau hauv cov khoom pub dawb, hnav qeeb dua. Qhov tshwm sim yog kev nce qib clearance asymmetry: sab txiav tawm tsam tus cab kuj maj mam qhib thaum lub dawb - ntug sab tseem nruj dua. Dimensional drift hauv notch geometry nram qab no.

Cov khoom siv nrawm nrawm rau tus qauv no. Kev ua cov ntaub ntawv nyob ze lawv cov txiaj ntsig txwv ntawm cov kev ntsuas steel, tshwj xeeb tshaj yog qib AHSS, ua rau muaj zog ntau ntxiv rau ib qho stroke. Ib qho kev xuas nrig ntaus txiav DP 980 ntawm 1.5 hli thickness absorbs roughly ob zaug ntawm shearing quab yuam ntawm tib lub punch txiav me me hlau ntawm tib lub thickness. Qhov kev quab yuam sib txawv txhais tau ncaj qha mus rau hauv qhov nrawm nrawm, nrawm dua, thiab luv dua tag nrho lub neej punch. Cov khoom siv stamping nws tus kheej yuav tsum ua raws li daim ntawv thov: carbide inserts ua qhov tsim nyog nyob rau hauv siab - thauj khoom qhov chaw nres tsheb uas cov cuab yeej siv hlau ua kom nrawm dhau.

Strip buckling los ntawm ntau tshaj -cov cab kuj tsis muaj zog sawv cev rau hom kev ua haujlwm tsis zoo. Thaum cov ntawv zoo tshem tawm ntau dhau -section, lossis thaum ntau qhov chaw nres tsheb sib txuas ua rau cov nyhuv tsis muaj zog, tus cab kuj poob qhov nruj txaus los tiv thaiv kev noj zaub mov - kev taw qhia compressive loads. Lub sawb buckles ntawm cov chaw nres tsheb, nqa tawm ntawm qhov chaw tuag, thiab jams tiv thaiv cov khoom hauv qab. Lub hauv paus ua rau yog cov neeg kho tshuab: tus neeg nqa khoom lub sijhawm ntawm inertia tau poob qis dua qhov pib xav tau los txhawb nqa lub zog rub los ntawm txhua qhov chaw ua haujlwm rau nws ib txhij.

• Saib xyuas punch hnav asymmetry- Thaum lub sijhawm tu, tshuaj xyuas tus neeg nqa khoom- sab txiav ntug ua ntej. Yog hais tias kev sib hloov ntau tshaj 0.02 mm thaum lub free- ntug sab tseem ntse, resharpening yog dhau lawm.
• Taug qab sharpening intervals tiv thaiv cov khoom qib- Tsim cov kab mob stroke suav rau txhua yam khoom siv. AHSS thiab stainless hlau daim ntaub ntawv feem ntau yuav tsum tau sharpening ntawm 40 mus rau 60 feem pua ​​ntawm lub sij hawm siv tau rau cov hlau me me.
• Txheeb xyuas tus neeg nqa khoom nruj tom qab kos- Yog hais tias strip buckling tshwm sim thaum lub sij hawm tsim khoom, xam cov khoom thauj khoom seem ntawm lub sij hawm inertia ntawm qhov chaw nres tsheb thiab sib piv rau cov kev cai pub pub rau tag nrho cov chaw nres tsheb.
• Ntsuas cov cuab yeej stamping xaiv cov khoom siv- Kev hnav ntxov ntxov tsis tu ncua txawm hais tias qhov tseeb clearance thiab sharpening qhia tias cov khoom siv punch tsis tuaj yeem txhawb nqa qhov chaw thau khoom. Kev kho dua tshiab los ntawm D2 cov cuab yeej hlau rau carbide lossis siv TiAlN txheej tuaj yeem txuas lub neej los ntawm 3 mus rau 5 zaug hauv cov ntawv thov.

Cov xov xwm thoob plaws txhua hom kev ua tsis tiav no yog cov tsos mob tshwm sim ntawm ib qho chaw hauv qhov tuag feem ntau tshwm sim los ntawm kev txiav txim siab rau lwm qhov, thaum tsim qauv, xaiv cov khoom siv, lossis teeb tsa.Raws li kev tshawb fawb txog kev tuag tseem ceeb, phav phav qhov sib txawv sib cuam tshuam hauv cov txheej txheem stamping, thiab nrhiav pom lawv txuas li cas yog qhov tseem ceeb rau kev txheeb xyuas cov hauv paus hauv paus es tsis yog caum cov tsos mob.

Kev nkag siab seb tus qauv tawg puas qhia txog kev tshem tawm cov teeb meem piv rau cov khoom hardening piv rau cov teeb meem geometry yog dab tsi cais kev daws teeb meem los ntawm kev sim-thiab- hloov kho yuam kev. Ib cheeb tsam pob txha pob txha nrog tsawg heev cov ntsiab lus kub hnyiab rau kev tshem tawm ntau dhau. Ib tug du ntug nrog huab burr projection ntsiab lus rau hnav tooling. Cov kab nrib pleb tawg ntawm qhov taw qhia hauv paus ntsiab lus rau cov khoom siv ntau tshaj qhov tsim lub hnab ntawv, tej zaum cov yield strain steel tau teev qis dua qhov tuaj txog ntawm lub kauj. Txhua tus qauv qhia rov qab rau cov qauv kev tshawb fawb tshwj xeeb, thiab rau cov kws tsim khoom ua haujlwm los ntawm kev ua haujlwm tsis zoo- cuam tshuam txog kev ua tsis tiav, muaj kev nkag mus rau kev sib koom tes tsim kev txhawb nqa los ntawm cov neeg tsim khoom muaj kev paub zoo xws liYICHEN kev cai stamping tuag daws teeb meemtuaj yeem ceev txoj hauv kev los ntawm kev kuaj mob mus rau kev kho, tshwj xeeb tshaj yog thaum qhov ntsuas qhov ntsuas qhov ntsuas, qhov ntsuas qhov tseeb, thiab cov khoom ntws zoo yuav tsum tau hais ib txhij.

Cov hom kev ua tsis tiav no tsis muaj nyob hauv kev sib cais. Ib qho kev tuag uas muaj slug rub feem ntau kuj tseem qhia tau tias thaum ntxov- theem burr loj hlob thiab pub tsis ruaj khov, txhua yam txuas nrog tib lub hauv paus kev loj hlob. Kev daws lawv mus tas li txhais tau hais tias hais txog cov hauv paus kev sib raug zoo ntawm kev tshawb fawb es tsis yog kho txhua tus tsos mob ntawm nws tus kheej. Cov txheej txheem ntawd- theem kev pom, siv kev tshawb fawb txog kev puas tsuaj, kev coj tus cwj pwm, thiab cov qauv geometric raws li kev sib koom ua ke, yog qhov hloov pauv kev saib xyuas zoo rau hauv kev ua haujlwm tuag.

Siv Bypass Notch Science kom tuag Engineering xyaum

Reactive troubleshooting ua rau tuag khiav. Proactive tsim ua kom nws tsis txhob poob rau hauv thawj qhov chaw. Txhua lub hauv paus ntsiab lus tshawb fawb thoob plaws hauv tsab xov xwm no, los ntawm kev coj tus cwj pwm hauv cheeb tsam mus rau cov khoom siv -tsav kev xaiv tshem tawm, sib sau ua ke ntawm ib lub hom phiaj siv tau: lub tsev bypass notch configurations uas ua tau kwv yees thoob plaws ntau lab lub voj voog yam tsis muaj kev cuam tshuam ntev. Qhov sib txawv ntawm cov cuab yeej thiab cov neeg tsim khoom tuag uas tsim cov duab kos los ntawm tus cwj pwm thiab ib tus uas tsim lawv los ntawm kev tshawb fawb los ntawm seb qhov kev sib raug zoo yog to taub lossis tsuas yog kwv yees.

Cov Ntsiab Cai Engineering Tseem Ceeb rau Kev Tsim Nyog

Tsib kev tshawb fawb-raws li cov hauv paus ntsiab lus cais cov kws tshaj lij- theem kev tsim qauv los ntawm kev sim-thiab- kev ua yuam kev. Cov no tsis yog cov cai ntawm tus ntiv tes xoo. Lawv yog cov kev sib raug zoo uas tuav tsis hais txog qhov tuag, khoom siv, lossis ib puag ncig tsim khoom.

1. Cov khoom siv dictate notch hom ua ntej geometry txiav txim siab.Tawm lub zog, elongation, thiab ua hauj lwm hardening tus nqi txhais tau hais tias cov cab kuj muaj peev xwm zam tau qhov tawg tsam thiab strain hardening imposed los ntawm ib tug tsis zoo notch cag. High-lub zog, qis- cov ntaub ntawv elongation thawb qhov kev txiav txim siab mus rau qhov zoo. Kev sim yuam kom muaj qhov tsis zoo rau AHSS vim tias nws ua haujlwm ntawm cov hlau me me tsis quav ntsej txog cov xwm txheej ntawm thaj tsam metallurgical uas tswj hwm ntug ductility.
2. Fracture propagation direction txiav txim siab qhov twg puas concentrates.Cov txiaj ntsig zoo xa cov chaw tawg mus rau hauv cov khoom pov tseg. Cov ntawv tsis zoo khaws cia rau ntawm cov cab kuj. Txhua qhov kev ua haujlwm qis qis ua haujlwm ntawm txhua qhov ntug qhov xwm txheej uas tau tsim. Tsim cov thaib tsis xav txog dab tsi tshwm sim peb qhov chaw tom qab yog tsim ib nrab ntawm qhov teeb meem.
3. Kev tshem tawm yog cov khoom siv - tshwj xeeb, tsis yog universal.Kev tshem tawm 10 feem pua ​​​​uas ua kom huv cov npoo hauv cov hlau me me ua rau qhov phem tshaj qhov ua tau burr qhov siab nyob rau hauv stainless thiab txaus ntshai micro- tawg hauv DP steels. Cov feem pua ​​​​ntawm kev tshem tawm yuav tsum tau muab los ntawm cov khoom siv shear tus cwj pwm, tsis yog los ntawm cov haujlwm yav dhau los ntawm qib sib txawv.
4. Lub kaum ntse ntse tswj kev ntxhov siab ntau dua li lwm qhov loj me.Lub vojvoog hauv paus hauv qab 0.5 npaug ntawm cov khoom tuab tsim cov ntsiab lus concentration uas tso tawm hauv zos ductility ua ntej kev tsim txawm pib. Kev qhia radii tsis yog qhov nthuav dav; nws yog ib qho kev txiav txim siab uas muaj kev cuam tshuam ncaj qha rau cov neeg nqa khoom ncaj ncees thiab lub neej cuab yeej.
5. Nthuav xaiv cascades rau hauv txhua qhov system uas nyob ib sab.Hloov ntawm qhov zoo mus rau qhov tsis zoo (lossis lwm qhov) tom qab kev teeb tsa strip tau cog lus txhais tau hais tias rov ua dua cov sawb dav dav, kev tsav dav hlau, cov khoom siv khib nyiab, chaw nres tsheb tshem tawm, thiab cov sijhawm saib xyuas. Qhov kev txiav txim siab me me yuav tsum ua ntej, tsis ua raws, nthuav dav tsim qauv.

Integrating Notch Science rau Tuag Kev Txhim Kho Kev Ua Haujlwm

Cov ntsiab cai no koom ua ke rau hauv cov txheej txheem kev tsim kho tuag ntawm qhov ua tau zoo tshaj plaws, ua ntej sawb dav raug kaw, ua ntej cov khau tuag yog dimensioned, thiab ua ntej coil purchase specifications. Cov kev ua haujlwm zoo li no: tshuaj xyuas cov ntaub ntawv cov ntaub ntawv ua ntej, tsim lub qhov rais tsim kom muaj kev ruaj ntseg hauv paus, tom qab ntawd xaiv cov ntawv ntaus ntawv, tom qab ntawd txhais cov duab geometry, tom qab ntawd sib koom ua haujlwm rau kev tso kawm. Txhua kauj ruam tsim rau yav dhau los.

Rau cov neeg tsim khoom tuag ua haujlwm los ntawm cov cuab yeej ua haujlwm nyuaj nrog 15 lossis ntau qhov chaw nres tsheb, qhov kev qhuab qhia txuas ntxiv no tiv thaiv qhov kawg - theem kev tshawb pom tias qhov kev xaiv qhov kev teeb tsa tsis sib haum xeeb nrog cov kev xav tau hauv qab los yog tshaj tus neeg nqa khoom lub peev xwm. CAE simulation, raws li tau hais nyob rau hauv cov txheej txheem tsim kev tuag, tuaj yeem siv tau cov kab mob hauv paus thiab cov neeg nqa khoom nruj ua ntej cov hlau raug txiav, ntes cov teeb meem uas yuav tshwm sim tsuas yog thaum T0 sim.

Lub neej voj voog txoj kev xav tseem ceeb sib npaug. Ib tug tuag uas khiav huv si ntawm mob stroke 1,000 tuaj yeem txhim kho notch- cuam tshuam txog kev ua tsis tiav ntawm mob stroke 500,000 raws li punch npoo puag ncig, clearances qhib asymmetrically, thiab kev sib koom ua ke tob zuj zus. Kev kwv yees txij nkawm yuav tsum tau ntsuas rau qib khoom siv thiab qhov ntsuas qhov ntsuas ntawm qhov pib, tsis yog tsim los ua haujlwm tom qab thawj qhov ua tsis tiav.

Cov peev txheej rau Advanced Stamping Tuag Tsim

Tooling engineers ua hauj lwm los ntawm kev tsim- hnyav bypass notch txiav txim siab tau txais txiaj ntsig los ntawm ntau qhov kev pab cuam. Cov khoom lag luam tus qauv zoo li Misumi USA muab cov ntawv teev cov punches, cov nyees khawm tuag, thiab cov lus qhia cov khoom siv uas npog cov geometries. Cov xwm txheej hauv kev lag luam xws li FABTECH Chicago 2025 muab kev nkag ncaj qha rau cov cuab yeej siv tshuab ua qauv qhia, kev sib tham tsim kev tuag, thiab kev sib koom tes sib koom ua ke uas txhawb kev hloov pauv kev paub txog cov ncauj lus xws li kev ua kom zoo dua qub thiab cov tswv yim tswj xyuas.

Rau cov haujlwm uas cuam tshuam nrog cov kab txaij nyuaj, kev cai punch profiles, thiab cov khoom sib tw uas dhau cov kev daws teeb meem, kev sib koom tes tsim kev txhawb nqa los ntawm cov neeg ua haujlwm tuag tau dhau los ua qhov tseem ceeb.YICHEN kev cai stamping tuag daws teeb meemTxuas cov cuab yeej engineers rau kev txawj ntse hauv cov qauv tuag, cov khoom siv, punches, lifters, bypass notches, burr tswj, clearance specification, thiab cov khoom txaus optimization. Hom kev sib koom tes no yog qhov tshwj xeeb tshaj yog thaum qhov ntsuas geometry yuav tsum tau koom tes nrog ntau - chaw nres tsheb tsim cov kab ke, thaum AHSS lossis cov khoom sib txawv thawb cov qauv tsim qauv dhau ntawm lawv qhov kev siv tau, lossis thaum cov khoom ntim khoom xav tau cov cuab yeej sib npaug nrog kev saib xyuas kev ua haujlwm thoob plaws ntau lab lub voj voog.

Txawm hais tias koj tau txais cov khoom siv los ntawm cov neeg muab khoom lag luam, tuaj koom fabtech 2025 cov kev sib tham ntawm kev siv tshuab tuag, lossis koom nrog cov neeg tsim khoom tsim kev cai rau tag nrho - kev txhawb nqa kev tsim qauv, qhov kev xav tau hauv qab yog tib yam: kev txiav txim siab hauv kev sib raug zoo ntawm cov khoom siv, geometry, thiab cov txheej txheem es tsis yog cov kev xav tau los ntawm cov ntawv thov sib txawv. Cov hauv paus ntsiab lus sau tseg ntawm no muab lub hauv paus kev tshuaj xyuas. Kev siv lawv tsis tu ncua thoob plaws tej yaam num yog dab tsi transforms bypass notch tsim los ntawm ib tug ntev qhov chaw ntawm tuag poob mus rau hauv ib tug txhim khu kev qha, kwv yees engineering system.

Cov lus nug nquag nug txog Bypass Notches hauv Stamping Tuag

1. Dab tsi yog qhov sib txawv ntawm qhov tsis zoo thiab qhov zoo bypass thais hauv kev nce qib stamping tuag?

Ib qho zoo bypass thais tshem tawm cov khoom siv los ntawm ntug strip, tsim ib qho kev txiav tawm sab hauv uas ua rau cov khoom seem slug ejected downward. Qhov no tawm ntawm cov cab kuj nrog txo tus ntoo khaub lig-section ntawm txhua qhov chaw. Ib tug tsis zoo bypass thais tawm ib tug protruding tab txuas ntawm lub strip ntug, uas interlocks nrog ib tug hnab tshos nyob rau hauv tuag rau kev sau npe. Tsis muaj qhov sib cais slug raug tsim tawm, thiab tag nrho strip cross -section raug khaws cia. Qhov kev xaiv ntawm lawv nyob ntawm cov khoom siv, sawb dav, ntim ntau lawm, thiab kev tsim cov dej hauv qab. High- steels muaj zog nrog kev txwv elongation feem ntau nyiam qhov zoo ntawm qhov tsis zoo vim tias kev puas tsuaj puas nyob hauv cov khoom seem, thaum cov hlau me me ua haujlwm zoo nrog ob qho kev teeb tsa.

2. Vim li cas AHSS cov ntaub ntawv xav tau kev sib txawv bypass notch tsim dua li cov hlau me me?

Cov qib siab siab -cov hlau muaj zog muaj qhov elongation qis dua thiab ua haujlwm hnyav hnyav dua piv rau cov hlau me me. Thaum ib qho kev tsis zoo raug txiav rau hauv AHSS, qhov cuam tshuam rau thaj tsam ntawm lub hauv paus hauv paus yuav nyuaj heev thiab nkig, nrog rau yuav luag tsis muaj qhov seem ductility kom nqus cov kab mob los ntawm cov dej ntws. Qhov no ua rau lub hauv paus tsis muaj qhov tawg pib qhov chaw hauv qab kev thauj khoom ntxiv. AHSS tseem xav tau kev txiav tawm dav dua, feem ntau 14 mus rau 16 feem pua ​​lossis siab dua piv rau 5 mus rau 10 feem pua ​​​​rau cov hlau me me. Cov txiaj ntsig zoo yog feem ntau nyiam rau AHSS vim tias lawv ncaj qha kev nthuav tawm cov pob txha mus rau hauv cov khoom pov tseg es tsis txhob xav txog kev puas tsuaj ntawm cov cab cab. Cov kws ua haujlwm ua haujlwm nrog cov ntaub ntawv no tau txais txiaj ntsig los ntawm kev sib koom tes cov cuab yeej xws li YICHEN, uas nws cov kev cai stamping tuag daws teeb meem hais txog kev tshem tawm cov ntsiab lus thiab cov khoom siv kom zoo rau cov qib xav tau.

3. Koj yuav ua li cas daws teeb meem strip misfeed teeb meem tshwm sim los ntawm cov teeb meem bypass notch?

Strip misfeed los ntawm cov teeb meem thaib feem ntau tshwm sim los ntawm kev sib koom ua ke tsis txaus ntawm qhov ntsuas thiab nres thaiv. Pib los ntawm kev ntsuas qhov tob qhov tob tiv thaiv tus thawj specification siv tus pin gauges los yog ib tug optical piv. Tshawb xyuas seb qhov chaw nres tsheb thaiv qhov chaw pom tias peening lossis cov khoom tsim uas txo cov kev sib koom tes zoo. Tshawb xyuas lub coil feeder tso lub sij hawm kom paub meej lub rooj zaum ntawm lub rooj zaum ua ntej cov neeg tsav tsheb koom. Rau qhov tsis zoo tsis zoo, ntsuas qhov tseeb tab khoov lub kaum sab xis thiab sib piv rau kev tsim qauv, vim cov ntaub ntawv uas muaj zog ntau dua tsim tawm ntau dua. Kuj soj ntsuam cov khoom siv camber tuaj, uas tuaj yeem ua rau lub ntswj kom tsis txhob nres nres tom qab. Cov misfeeds tsis tu ncua taw qhia txog qhov tsis zoo geometry uas tsis raug, thaum cov kev sib cuam tshuam qhia cov yam tseem ceeb xws li pub sijhawm lossis thermal expansion thaum lub sijhawm ua haujlwm txuas ntxiv.

4. Lub kaum sab xis ntawm lub kaum sab xis yuav tsum tau teev nyob rau ntawm txoj kab hla hla kev hloov pauv kom tsis txhob tawg?

Lub kaum sab xis ntawm qhov kev hloov pauv yog ib qho ntawm qhov tseem ceeb tshaj plaws rau kev tiv thaiv cov kab nrib pleb tawg thiab kev ua tsis tiav ntxov ntxov. Yam tsawg kawg yog nyob ntawm cov khoom siv. Rau cov hlau me me, qhia tsawg kawg yog 0.5 npaug ntawm cov khoom tuab ntawm cov pob zeb sab hauv thiab 1.0 npaug ntawm qhov tsis zoo ntawm cov hauv paus hniav nyob ze ntawm qhov chaw tsim. AHSS qib xav tau 1.0 npaug ntawm thickness yam tsawg kawg nkaus ntawm txhua lub ces kaum thiab 1.5 npaug los yog ntau dua ntawm cov hauv paus hniav tsis zoo vim tsis muaj ntug ductility. Aluminium yuav tsum tau 0.75 zaug thickness yam tsawg kawg nkaus. Thaum lub vojvoog -rau- qhov sib piv qhov tob poob qis dua 0.25, qhov kev ntxhov siab muaj peev xwm tshaj 4.0, lub ntsiab lus hauv cheeb tsam kev ntxhov siab nce mus txog plaub npaug ntawm tus nqi nominal. Cov theem no ntawm cov concentration exhausts muaj ductility ua ntej lub sawb mus txog downstream txoj kev chaw nres tsheb.

5. Thaum twg txoj kev tuag tuaj yeem ua haujlwm yam tsis muaj kev hla dhau?

Kev tuag zoo tuaj yeem ua haujlwm yam tsis muaj bypass notches thaum muaj ntau qhov xwm txheej tau ua tiav ib txhij: lub coil feed system muab qhov chaw raug nyob hauv 0.05 hli lossis zoo dua nrog cov ntaub ntawv muaj peev xwm, cov khoom tuaj muaj tsawg kawg nkaus ntug camber los ntawm qhov zoo slitting, tuag tiv thaiv sensors tau teeb tsa thiab tsis txhob hla thaum lub sijhawm teeb tsa, cov neeg ua haujlwm tau txais kev cob qhia zoo ntawm qhov chaw nres tsheb tsis zoo, suav nrog kev lees paub thaum ntxov, nres. Txawm li cas los xij, ua tau raws li tag nrho cov qauv no ib zaug yog qhov tsis tshua muaj nyob hauv ib puag ncig tsim khoom. Qhov kev pheej hmoo suav yog asymmetric: ib lub suab qis nqi ob peb txhiab daus las hauv cov khoom siv ntau lab ntawm cov khoom, thaum ib qho kev sib tsoo tuag los ntawm kev noj ntau dhau tuaj yeem tshaj ntau pua txhiab tus hauv kev kho thiab poob qis. Cov neeg tsim kev tuag feem ntau muaj xws li ib qho kev txiav txim siab thiab tawm kev txiav txim siab tshem tawm rau cov neeg ua haujlwm stampers uas tuaj yeem txheeb xyuas lawv cov peev txheej txheej txheem.