Ingcali yokugoba uSteve Benson ubamba ii-imeyile zabafundi ukuze aphendule imibuzo malunga nokubala i-hemming kunye nokugoba. Imifanekiso kaGetty Images
Ndifumana ii-imeyile ezininzi inyanga nenyanga kwaye ndinqwenela ukuba bendinexesha lokuziphendula zonke. Kodwa ke, akukho xesha laneleyo emini lokwenza konke. Kwikholamu yale nyanga, ndiqokelele ii-imeyile ezimbalwa endiqinisekileyo ukuba abafundi bam abaqhelekileyo baya kuzifumana ziluncedo. Okwangoku, masiqale ukuthetha ngemiba enxulumene noyilo.
U: Ndifuna ukuqala ngokuthi ubhale inqaku elihle kakhulu. Ndiwafumene eluncedo kakhulu. Bendinengxaki kwisoftware yethu yeCAD kwaye andikwazi kufumana sisombululo. Ndenza ubude obungenanto bomphetho, kodwa isoftware ibonakala ifuna isibonelelo esongezelelweyo sokugoba. Umqhubi wethu weebhuleki undixelele ukuba ndingashiyi isibonelelo sokugoba kumphetho, ngoko ke ndibeke isoftware yeCAD kwinqanaba eliphantsi elivumelekileyo (0.008″) - kodwa bendisaphelelwe yisitokhwe.
Umzekelo, ndinentsimbi engagqwaliyo eyi-16-ga.304, ubukhulu bangaphandle buyi-2″ kunye ne-1.5″, 0.75″. Umphetho ngaphandle. Abaqhubi bethu beebhuleki bagqibe kwelokuba isibonelelo sokugoba yi-0.117 intshi. Xa songeza ubukhulu kunye nomphetho, emva koko sithabatha isibonelelo sokugoba (2 + 1.5 + 0.75 – 0.117), sifumana ubude besitokhwe obuyi-4.132 intshi. Nangona kunjalo, izibalo zam zindinike ubude obufutshane obungenanto (4.018 intshi). Ngaphandle koko konke, singayibala njani i-flat blank yomphetho?
A: Okokuqala, masicacise amagama ambalwa. Ukhankanye isibonelelo se-bend (BA) kodwa awuzange ukhankanye i-bend deduction (BD), ndiqaphele ukuba awuzange ufake i-BD kwii-bend eziphakathi kwe-2.0″ kunye ne-1.5″.aspect.
I-BA kunye ne-BD zahlukile kwaye azitshintshi, kodwa ukuba uzisebenzisa ngokuchanekileyo, zombini zikusa kwindawo enye. I-BA ngumgama ojikeleze i-radius elinganiswe kwi-axis engathathi hlangothi. Emva koko yongeza elo nani kumlinganiselo wakho wangaphandle ukuze ikunike ubude obungenanto obuthe tyaba. I-BD ithatyathwa kumlinganiselo opheleleyo wesixhobo somsebenzi, ukugoba kube kanye ngokugoba.
Umfanekiso 1 ubonisa umahluko phakathi kwezi zimbini. Qiniseka ukuba usebenzisa echanekileyo. Qaphela ukuba amaxabiso e-BA kunye ne-BD anokwahluka ukusuka ekugobeni ukuya ekugobeni, kuxhomekeke kwi-engile yokugoba kunye ne-radius yokugqibela yangaphakathi.
Ukuze ubone ingxaki yakho, usebenzisa intsimbi engagqwaliyo engama-304 ubukhulu obuyi-0.060″ enobukhulu obufanayo kunye nobukhulu obuyi-2.0 kunye ne-1.5″ ngaphandle, kunye ne-0.75″. Umphetho emaphethelweni. Kwakhona, awuzange ufake ulwazi malunga ne-engile yokugoba kunye ne-radius yokugoba ngaphakathi, kodwa ukuze kube lula ndibale umoya ndicinga ukuba wenze i-engile yokugoba engama-90 degrees kwi-0.472 intshi. Oku kukunika i-0.099 intshi. I-radius yokugoba edadayo, ebalwe kusetyenziswa umthetho we-20%. (Ukuze ufumane okungakumbi ngomthetho we-20%, ungajonga "Indlela yokuQaphela ngokuchanekileyo i-Inner Bend Radius of Air Formation" ngokuchwetheza isihloko kwibhokisi yokukhangela ye-thefabricator.com.)
Ukuba yi-intshi eziyi-0.062. I-radius ye-punch igoba izinto ngaphezulu kwe-intshi eziyi-0.472. Ukuvula i-die, ufikelela kwi-intshi eziyi-0.099. Ukuba udada ngaphakathi kwi-radius ye-bend, i-BA yakho kufuneka ibe yi-intshi eziyi-0.141, i-backback yangaphandle kufuneka ibe yi-intshi eziyi-0.125, kwaye i-bend deduction (BD) kufuneka ibe yi-intshi eziyi-0.107. Ungayisebenzisa le BD kwii-bend eziphakathi kwe-intshi eziyi-1.5 kunye ne-2.0. (Ungafumana iifomyula ze-BA kunye ne-BD kwikholamu yam yangaphambili, kubandakanya "Iziseko Zokusebenzisa Imisebenzi Yokugoba.")
Okulandelayo, kufuneka ubale ukuba uza kutsalela ntoni kumphetho. Phantsi kweemeko ezifanelekileyo, i-deduction factor yee-flat okanye ii-closed hems (izinto ezingaphantsi kwe-0.080 intshi ubukhulu) yi-43% yobukhulu bezinto. Kule meko, ixabiso kufuneka libe yi-0.0258 intshi. Usebenzisa olu lwazi, kufuneka ukwazi ukwenza ubalo olungenanto olucwangcisiweyo:
Ii-intshi eziyi-0.017. Umahluko phakathi kwexabiso lakho elingenanto elisicaba eliyi-intshi eziyi-4.132 kunye nelam eliyi-intshi eziyi-4.1145 unokuchazwa ngokulula kukuba i-hemming ixhomekeke kakhulu kumqhubi. Ndithetha ukuthini? Kaloku, ukuba umqhubi ubetha inxalenye ethe tyaba yenkqubo yokugoba, uza kufumana i-flange ende. Ukuba umqhubi akayibethi i-flange ngamandla, i-flange ekugqibeleni iya kufutshane.
Q: Sinesicelo sokugoba apho senza khona amaphepha esinyithi ahlukeneyo, ukusuka kwi-20-ga. Ayinasiciko ukuya kwi-10-ga. Izinto ezifakwe i-coating. Sine-press brake enokulungiswa kwezixhobo ngokuzenzekelayo, i-V-die ehlengahlengiswayo ezantsi kunye ne-self-positioning segmented punch phezulu. Ngelishwa, senze impazamo saza sa-odola i-punch ene-tip radius eyi-0.063″.
Sisebenza ekuqinisekiseni ukuba ubude beflange yethu buyafana kwinxalenye yokuqala. Kucetyiswe ukuba isoftware yethu yeCAD isebenzisa ubalo olungalunganga, kodwa inkampani yethu yesoftware ibone ingxaki yaza yathi silungile. Ngaba iza kuba yisoftware yomatshini wokugoba? Okanye sicinga kakhulu? Ngaba luhlengahlengiso nje oluqhelekileyo lwe-BA okanye singafumana i-punch entsha nge-0.032″ stock.radius uncedo? Naluphi na ulwazi okanye ingcebiso iya kuxatyiswa kakhulu.
A: Ndiza kuqala ndiphendule uluvo lwakho malunga nokuthenga i-punch radius engalunganga. Ngenxa yohlobo lomatshini onawo, ndicinga ukuba wenza umoya. Oku kundenza ndibuze imibuzo eliqela. Okokuqala, xa uthumela umsebenzi evenkileni, ngaba uyamxelela umqhubi ukuba uyilo lokuvula lwenxalenye lwenziwe kwimold yaluphi? Kwenza umahluko omkhulu.
Xa usenza inxalenye yomoya, i-radius yokugqibela yangaphakathi yenziwa njengepesenti yokuvulwa kwesikhunta. Lo ngumthetho we-20% (jonga umbuzo wokuqala ukuze ufumane ulwazi oluthe kratya). Ukuvulwa kwedayi kuchaphazela i-radius egobileyo, nto leyo echaphazela i-BA kunye ne-BD. Ngoko ke ukuba ubalo lwakho lubandakanya i-radius eyahlukileyo enokufikelelwa yokuvulwa kwedayi kuneleyo isetyenziswa ngumsebenzisi kumatshini, unengxaki.
Masithi umatshini usebenzisa ububanzi bedayi eyahlukileyo kunoko bekucwangcisiwe. Kule meko, umatshini uya kufumana i-inner bend radius eyahlukileyo kunoko bekucwangcisiwe, utshintshe i-BA kunye ne-BD, kwaye ekugqibeleni ubukhulu benxalenye bubekiwe.
Oku kundizisa kuluvo lwakho malunga ne-punch radius engalunganga. 0.063″ ngaphandle kokuba uzama ukufumana i-inner bend radius eyahlukileyo okanye encinci. I-radius kufuneka isebenze kakuhle, yiyo loo nto.
Linganisa i-inner bend radius efunyenweyo kwaye uqinisekise ukuba ihambelana ne-inner bend radius ebaliweyo. Ingaba i-punch radius yakho ayilunganga ngokwenene? ​​Kuxhomekeke kwinto ofuna ukuyifikelela. I-punch radius kufuneka ilingane okanye ingaphantsi kwe-floating inner bend radius. Ukuba i-punch radius inkulu kune-natural floating bend radius kwindawo ethile yokuvuleka kwedayi, inxalenye iya kuthatha i-punch radius. Oku kuya kutshintsha kwakhona i-inner bend radius kunye namaxabiso owabalele kwi-BA kunye ne-BD.
Kwelinye icala, awufuni ukusebenzisa i-punch radius encinci kakhulu, enokulola ukugoba kwaye ibangele ezinye iingxaki ezininzi. (Ukuze ufumane okungakumbi ngale nto, jonga "Indlela Yokuphepha Ukujika Okubukhali.")
Ngaphandle kwezi meko zimbini zigqithisileyo, ukubetheka komoya akukho nto ngaphandle kweyunithi yokutyhala kwaye akuchaphazeli i-BD kunye ne-BA. Kwakhona, i-radius yokugoba ibonakaliswa njengepesenti yokuvulwa kwedayi, ibalwe kusetyenziswa umthetho we-20%. Kwakhona, qiniseka ukuba usebenzisa imiqathango kunye namaxabiso e-BA kunye ne-BD ngokuchanekileyo, njengoko kubonisiwe kuMfanekiso 1.
Umbuzo: Ndizama ukubala amandla aphezulu asecaleni kwisixhobo sokwenza i-hemming ukuqinisekisa ukuba abaqhubi bethu bakhuselekile ngexesha lenkqubo yokwenza i-hemming. Ngaba unazo naziphi na iingcebiso zokundinceda ndifumane oku?
Impendulo: Amandla asecaleni okanye ukutyhala ecaleni kunzima ukukulinganisa nokubala ukuthambisa umphetho kwi-press brake kwaye kwiimeko ezininzi akufuneki. Ingozi yokwenyani kukugqithisa i-press brake nokutshabalalisa i-punch kunye ne-bed yomatshini. I-Ram kunye ne-bed zijikile zibangela ukuba nganye igobe ngonaphakade.
Umfanekiso 2. Iipleyiti zokutyhala kwiseti yee-flatening dies ziqinisekisa ukuba izixhobo eziphezulu nezisezantsi azihambi kwicala elahlukileyo.
Ibhuleki yokucinezela idla ngokujika phantsi komthwalo ize ibuyele kwindawo yayo yokuqala ethe tyaba xa umthwalo ususiwe. Kodwa ukudlula umda womthwalo weebhuleki kunokugoba iindawo zomatshini ukuya kwinqanaba apho zingasabuyeli kwindawo ethe tyaba. Oku kungonakalisa ibhuleki yokucinezela ngokusisigxina. Ke ngoko, qiniseka ukuba uqwalasela imisebenzi yakho yokugquma kwiindlela zokubala iitoni. (Ukuze ufumane okungakumbi ngale nto, ungajonga "Iintsika ezi-4 zetoni yebhuleki yokucinezela.")
Ukuba iflange eza kutyibilikiswa inde ngokwaneleyo ukuba ityibilike, ukutyhala ecaleni kufuneka kube kuncinci. Nangona kunjalo, ukuba ufumanisa ukuba ukutyhala ecaleni kubonakala kugqithisile kwaye ufuna ukunciphisa intshukumo kunye nokujija kwemod, ungongeza iiplate zokutyhala kwimod. Ipleyiti yokutyhala ayiyonto ingaphezulu kwentsimbi etyebileyo eyongezwe kwisixhobo esisezantsi, eyolulela ngaphaya kwesixhobo esingaphezulu. Ipleyiti yokutyhala inciphisa imiphumo yokutyhala ecaleni kwaye iqinisekisa ukuba izixhobo eziphezulu nezisezantsi azihambi kwicala elahlukileyo kwelinye (jonga uMfanekiso 2).
Njengoko benditshilo ekuqaleni kwale kholamu, imibuzo mininzi kakhulu kwaye ixesha lokuyiphendula lincinci kakhulu. Enkosi ngomonde wakho ukuba kutshanje undithumelele imibuzo.
Nokuba kunjalo, vumela imibuzo iqhubeke iphakama. Ndiza kuyiphendula ngokukhawuleza. Kude kube ngoko, ndiyathemba ukuba iimpendulo apha ziya kunceda abo babuze lo mbuzo kunye nabanye abajongene neengxaki ezifanayo.
Fumana iimfihlo zokusebenzisa i-press brake kule workshop inzima yeentsuku ezimbini nge-8-9 ka-Agasti kunye nomqeqeshi uSteve Benson ukukufundisa ithiyori kunye neziseko zezibalo ezingasemva komatshini wakho. Uza kufunda imigaqo engasemva kokugoba kwesinyithi esisemgangathweni ophezulu ngemiyalelo esebenzisanayo kunye neengxaki zomsebenzi wesampulu kulo lonke ikhosi. Ngemisebenzi elula ukuyiqonda, uza kufunda izakhono ezifunekayo ukubala ii-bend deductions ezichanekileyo, ukhethe isixhobo esifanelekileyo somsebenzi, kwaye uchonge ukuvulwa kwe-V-die okuchanekileyo ukuthintela ukuphazamiseka kwenxalenye. Ndwendwela iphepha lomsitho ukuze ufunde okungakumbi.
I-FABRICATOR yimagazini ephambili kushishino lokwenza nokuvelisa isinyithi eMntla Melika. Le magazini ibonelela ngeendaba, amanqaku obuchwephesha kunye nembali yamatyala evumela abavelisi ukuba benze imisebenzi yabo ngokufanelekileyo. I-FABRICATOR ibikhonza eli shishini ukusukela ngo-1970.
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