Ndakhala ndikugwira ntchito yowerengera nkhani zambiri za owerenga - ndili ndi mizati ingapo yoti ndilembe ndisanayankhenso. Ngati mwanditumizira funso koma sindinayankhe, dikirani, funso lanu likhoza kukhala lotsatira. Poganizira zimenezo, tiyeni tiyankhe funsolo.
Q: Tikuyesera kusankha chida chomwe chingapereke ma radius a mainchesi 0.09. Ndataya zida zambiri kuti ndiyesere; cholinga changa ndikugwiritsa ntchito sitampu yomweyo pazipangizo zathu zonse. Kodi mungandiphunzitse momwe ndingagwiritsire ntchito 0.09″ kuti ndidziwiretu ma radius opindika? ma radius oyenda?
A: Ngati mukupanga mpweya, mutha kuneneratu kutalika kwa ma radius pochulukitsa kutseguka kwa die ndi peresenti kutengera mtundu wa chinthucho. Mtundu uliwonse wa chinthucho uli ndi kuchuluka kwake.
Kuti mupeze maperesenti a zipangizo zina, mutha kuyerekeza mphamvu zawo zokoka ndi mphamvu zokoka za psi 60,000 za zipangizo zathu zofotokozera (chitsulo chozizira chotsika ndi mpweya wochepa). Mwachitsanzo, ngati zipangizo zanu zatsopano zili ndi mphamvu zokoka za psi 120,000, mutha kuyerekeza kuti peresentiyo idzakhala kawiri kuposa yoyambira, kapena pafupifupi 32%.
Tiyeni tiyambe ndi zinthu zathu zofotokozera, chitsulo chopindidwa chozizira chotsika ndi mpweya wokhala ndi mphamvu yokoka ya 60,000 psi. Mpweya wamkati wa chinthuchi uli pakati pa 15% ndi 17% ya malo otseguka, kotero nthawi zambiri timayamba ndi mtengo wogwirira ntchito wa 16%. Mtundu uwu umachitika chifukwa cha kusiyana kwawo kwachilengedwe mu zinthu, makulidwe, kuuma, mphamvu yokoka, ndi mphamvu yotulutsa. Zinthu zonsezi zimakhala ndi mitundu yosiyanasiyana ya kulolerana, kotero n'zosatheka kupeza kuchuluka kwenikweni. Palibe zidutswa ziwiri za chinthu zomwe zili zofanana.
Poganizira zonsezi, mumayamba ndi apakati pa 16% kapena 0.16 ndikuchulukitsa ndi makulidwe a chinthucho. Chifukwa chake, ngati mukupanga chinthu cha A36 chokulirapo kuposa mainchesi 0.551. Mukatsegula die, radius yanu yamkati iyenera kukhala pafupifupi 0.088″ (0.551 × 0.16 = 0.088). Kenako mudzagwiritsa ntchito 0.088 ngati mtengo woyembekezeredwa wa radius yamkati yomwe mumagwiritsa ntchito powerengera bend allowance ndi bend detraction.
Ngati nthawi zonse mumalandira zinthu kuchokera kwa wogulitsa yemweyo, mudzatha kupeza kuchuluka komwe kungakufikitseni pafupi ndi radius yamkati yomwe mukupeza. Ngati zinthu zanu zimachokera kwa ogulitsa osiyanasiyana, ndibwino kusiya mtengo wapakati wowerengedwa, chifukwa katundu wa zinthu amatha kusiyana kwambiri.
Ngati mukufuna kupeza dzenje lopangira die lomwe lingapereke mawonekedwe enieni a mkati mwake, mutha kusintha njira iyi:
Kuchokera apa mutha kusankha dzenje lapafupi kwambiri lomwe likupezeka. Dziwani kuti izi zikutanthauza kuti utali wamkati wa kupindika komwe mukufuna kukwaniritsa ukugwirizana ndi makulidwe a chinthu chomwe mukupanga mpweya. Kuti mupeze zotsatira zabwino, yesani kusankha kutsegula kwa die komwe kuli ndi utali wamkati wa kupindika komwe kuli pafupi kapena kofanana ndi makulidwe a chinthucho.
Mukaganizira zonsezi, dzenje la die lomwe mungasankhe lidzakupatsani radius yamkati. Onetsetsaninso kuti radius ya punch isapitirire radius yopindika ya mpweya mu chinthucho.
Kumbukirani kuti palibe njira yabwino yodziwira nthawi yozungulira mkati mwa chipangizo chifukwa cha zinthu zonse zomwe zili mkati mwake. Kugwiritsa ntchito maperesenti a m'lifupi mwa chipangizochi ndi lamulo lolondola kwambiri. Komabe, kungakhale kofunikira kusinthana mauthenga ndi mtengo wa peresenti.
Q: Posachedwapa ndalandira mafunso angapo okhudza kuthekera kogwiritsa ntchito maginito pa chida chopindika. Ngakhale sitinazindikire izi zikuchitika ndi chida chathu, ndikufuna kudziwa kukula kwa vutoli. Ndikuwona kuti ngati nkhungu ili ndi maginito ambiri, malo opanda kanthu amatha "kumamatira" ku nkhunguyo osapangidwa nthawi zonse kuchokera ku chidutswa chimodzi kupita ku china. Kupatula apo, kodi pali nkhawa zina?
Yankho: Mabulaketi kapena mabulaketi omwe amathandizira die kapena kuyanjana ndi maziko a press brake nthawi zambiri samakhala ndi maginito. Izi sizikutanthauza kuti pilo yokongoletsera singakhale ndi maginito. Izi sizingachitike.
Komabe, pali zitsulo zing'onozing'ono zambirimbiri zomwe zimatha kukhala ndi maginito, kaya ndi matabwa omwe akuponderezedwa kapena choyezera chozungulira. Kodi vutoli ndi lalikulu bwanji? Ndi loopsa bwanji? Chifukwa chiyani? Ngati chinthuchi sichinagwidwe panthawi yake, chingalowe m'malo ogwirira ntchito a bedi, ndikupanga malo ofooka. Ngati gawo la maginito ndi lokwanira kapena lalikulu mokwanira, lingayambitse kuti bedi likwere m'mphepete mwa choyikapo, zomwe zimapangitsa kuti mbale yoyambira ikhale yosagwirizana kapena yofanana, zomwe zidzakhudza mtundu wa gawo lomwe likupangidwa.
Q: Mu nkhani yanu momwe ma Air Curves amakhalira akuthwa, mwatchula njira iyi: Punch Tonnage = Dera la nsapato x Kukhuthala kwa zinthu x 25 x Zinthu Zofunika. Kodi 25 imachokera kuti mu equation iyi?
A: Fomula iyi yatengedwa kuchokera ku Wilson Tool ndipo imagwiritsidwa ntchito kuwerengera kuchuluka kwa ma punch tonnage ndipo sikugwirizana ndi kupanga; ndinayisintha kuti ndidziwe momwe kupindika kumakhalira kolimba. Mtengo wa 25 mu fomula ukutanthauza mphamvu ya zokolola za zinthu zomwe zimagwiritsidwa ntchito popanga fomula. Mwa njira, chipangizochi sichikupangidwanso, koma chili pafupi ndi chitsulo cha A36.
Zachidziwikire, pakufunika zambiri kuti muwerenge molondola malo opindika ndi mzere wopindika wa nsonga ya punch. Kutalika kwa kupindika, malo olumikizirana pakati pa mphuno ya punch ndi zinthu, komanso m'lifupi mwa die zimagwira ntchito yofunika kwambiri. Kutengera ndi momwe zinthu zilili, utali wopindika womwewo wa chinthu chomwecho ukhoza kupanga mapindiko akuthwa ndi mapindiko angwiro (monga, mapindiko okhala ndi radius yamkati yodziwikiratu komanso yopanda makwinya pamzere wopindika). Mupeza chowerengera chabwino kwambiri cha sharp bend patsamba langa chomwe chimaganizira zosintha zonsezi.
Funso: Kodi pali njira yochotsera kupindika kuchokera kumbuyo kwa kauntala? Nthawi zina akatswiri athu okonza mabuleki osindikizira amagwiritsa ntchito mabowo ang'onoang'ono a V omwe sitinawaganizire mu dongosolo la pansi. Timagwiritsa ntchito ndalama zochepetsera kupindika zomwe zimachotsedwa.
Yankho: inde ndi ayi. Ndiloleni ndifotokoze. Ngati ikupindika kapena ikuponda pansi, ngati m'lifupi mwa nkhunguyo ikugwirizana ndi makulidwe a zinthu zomangira, chomangiracho sichiyenera kusintha kwambiri.
Ngati mukupanga mpweya, mkati mwa utali wa kupindika umatsimikiziridwa ndi dzenje la die ndipo kuchokera pamenepo mumatenga utali wa radius womwe wapezeka mu die ndikuwerengera kuchotsera kwa kupindika. Mutha kupeza nkhani zanga zambiri pankhaniyi pa TheFabricator.com; fufuzani "Benson" ndipo mudzapeza.
Kuti mpweya ugwire ntchito, ogwira ntchito yanu ya uinjiniya adzafunika kupanga slab pogwiritsa ntchito njira yochepetsera ma bend kutengera radius yoyandama yomwe imapangidwa ndi die (monga momwe tafotokozera mu "Bend Inside Radius Prediction" koyambirira kwa nkhaniyi). Ngati wogwiritsa ntchito wanu akugwiritsa ntchito nkhungu yomweyo monga gawo lomwe adapangidwira, gawo lomaliza liyenera kukhala loyenera ndalama zake.
Nayi chinthu chomwe sichidziwika bwino - matsenga pang'ono ochokera kwa wowerenga wokonda kwambiri pofotokoza nkhani yomwe ndidalemba mu Seputembala 2021 "Njira Zomangira Mabuleki a T6 Aluminiyamu".
Yankho la owerenga: Choyamba, mwalemba nkhani zabwino kwambiri zokhudza ntchito ya chitsulo. Ndikukuthokozani chifukwa cha izo. Ponena za kuphimba komwe mudafotokoza mu gawo lanu la Seputembala 2021, ndaganiza zogawana nanu malingaliro ena kuchokera ku zomwe ndakumana nazo.
Pamene ndinawona koyamba njira yothira madzi zaka zambiri zapitazo, ndinauzidwa kuti ndigwiritse ntchito tochi ya oxy-acetylene, kuyatsa mpweya wa acetylene wokha, ndikujambula mizere ya nkhungu ndi soot wakuda wochokera ku mpweya wa acetylene woyaka. Chomwe mukufunikira ndi mzere wakuda kwambiri kapena wakuda pang'ono.
Kenako yatsani mpweya ndikutenthetsa waya kuchokera mbali ina ya gawolo ndipo patali pang'ono mpaka waya wamtundu womwe mwangolumikiza utayamba kutha kenako n’kutha kwathunthu. Izi zikuwoneka kuti ndi kutentha koyenera kuti aluminiyamu ipange mawonekedwe a madigiri 90 popanda mavuto aliwonse osweka. Simukuyenera kupanga mawonekedwe a gawolo likadali lotentha. Mutha kulisiya kuti lizizire ndipo lidzapitilizidwa kutenthedwa. Ndikukumbukira ndikuchita izi pa pepala la 6061-T6 lokhuthala la 1/8″.
Ndakhala ndikugwira ntchito yochuluka yopanga zitsulo zopyapyala kwa zaka zoposa 47 ndipo nthawi zonse ndakhala ndi luso lobisa zinthu. Koma patatha zaka zambiri, sindikuziyikanso. Ndikudziwa zomwe ndikuchita! Kapena mwina ndili bwino kubisa zinthu. Mulimonsemo, ndinatha kuchita ntchitoyi mwanjira yotsika mtengo kwambiri popanda zinthu zambiri.
Ndikudziwa zinthu ziwiri zokhudza kupanga zitsulo, koma ndikuvomereza kuti sindili mbuli konse. Ndine wolemekezeka kugawana nanu chidziwitso chomwe ndapeza pa moyo wanga wonse.
I know one more thing: in general, you all have a lot of experience and knowledge. Let’s say you want to share interesting tips, work habits, or just tidbits with other readers. Please write it down or draw it and send it to me at steve@theartofpressbrake.com.
Palibe chitsimikizo chakuti ndidzagwiritsa ntchito imelo yanu mu gawo lotsatira, koma simudzadziwa. Ndikhoza kungodziwa. Kumbukirani, tikamagawana zambiri za chidziwitso ndi zomwe takumana nazo, timakula bwino.
FABRICATOR ndi magazini yotsogola yopanga ndi kupanga zitsulo ku North America. Magaziniyi imafalitsa nkhani, nkhani zaukadaulo ndi nkhani zopambana zomwe zimathandiza opanga kuti agwire ntchito yawo bwino kwambiri. FABRICATOR yakhala ikugwira ntchito kuyambira mu 1970.
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