Lapho abantu abaningi bezwa ukunemba kwe-China CNC machining, into yokuqala efika ekhanda labo cishe njalo yizindleko eziphansi. Futhi ngokuqinisekile, leyo yingxenye yendaba, kodwa ungqimba olula, olukha phezulu kakhulu. Ingxoxo yangempela, le esiba nayo phansi esitolo, imayelana nomhosha ophakathi kwesitolo esisebenzisa imishini kanye nesiqondayo. ukunemba imishini njengenqubo. Ngike ngabona imidwebo evela kumakhasimende aphesheya lapho izingcingo zokubekezelela ziyingubo yokulala engu-±0.05mm yonkana—uphawu olucacile lokuthi bathenga impahla, hhayi ubunjiniyela bengxenye. Umqondo wokuthi yonke into evela eChina iyikhophi eshibhile iyisithiyo esikhulu. Iqiniso liwukuthi, indawo yokuncintisana lapha inesihluku, futhi abasindile yilabo abaye bathuthela kude ngaphezu kokungabizi nje. Izitolo ezihlala isikhathi eside, njengezinye ezindala ezididiyelwe e-Qingdao engike ngasebenza nazo, ziyayithola. Akukhona mayelana nenani lesitika somshini; kumayelana nendlela ophatha ngayo lonke iketango, kusukela esakhiweni sokusanhlamvu esisanhlamvu kuya emsebenzini wokugcina wokususa. Yilapho inani langempela, kanye nekhanda elibuhlungu langempela, lihlala khona.
Isixhumanisi Se-Foundry-Machining: Lapho Ukunemba Kuqala Khona Ngempela
Lokhu kuyinto iningi labafana abaphequlula i-Alibaba abaphuthelwa ngokuphelele. Uma wenza ingxenye kusuka ekulingeni okungaphekiwe noma ekufojini, ukunemba kwakho sekuvele kushiwo kudala ngaphambi kokuthi i-billet iboshwe CNC imishini isikhungo. Ngikhumbula iphrojekthi ye-hydraulic valve body, impahla kwakuyi-ductile iron. I-prototype evela esitolo esivamile yayibukeka ilungile, kodwa sasishayisa udonga ngesikhathi sokukhiqiza ivolumu—izindawo zomshini ngezikhathi ezithile zazizobonisa i-porosity, zibulale isilinganiso sokucindezela. Udaba kwakungewona umshini; kwakuyinqubo yokusungula. Ikhwalithi yokuncibilika kanye nedizayini yesikhunta akuzange kulungiselelwe ingxenye edinga ubuso be-seal obuphelele. Awukwazi ukukhipha imbobo engaphansi komhlaba ngomshini.
Yingakho imodeli endaweni efana I-Qingdao Qiangsenyuan Technology Co., Ltd. (QSY) kunengqondo. Sebeneminyaka engaphezu kwengama-30 benza ukulingisa ngaphambi kokuthi i-CNC ibe yigama elivamile lapha. Lapho besebenza ngomshini ingxenye abazijiyile yona, njengendlu yephampu yensimbi engagqwali, balawula okuguquguqukayo. Bayazi ukuthi amazinga okupholisa athinta kanjani ingcindezi, izindonga ezingahle zihlanekezele ngesikhathi sokugwaza, futhi bazolungisa ukusakaza. CNC ukunemba machining izibonelelo ngokufanele. Iwuhlobo oluhlukile lwelophu yempendulo ye-DFM (Design for Manufacturability). Umakhi angabuyela kumphathi we-foundry futhi athi, Lo mgijimi udala indawo enzima lapha, singayisusa? Lokho kuhlanganiswa kuyinzuzo ethule ongeke uyibone esilinganisweni senani.
Iphinde iguqule umdlalo wezinto ezibonakalayo. Isizinda sabo sikhuluma ngama-alloys akhethekile—asekelwe ku-cobalt, asekelwe ku-nickel. Ukwenza imishini lezo akukhona nje ukuthenga isigayo esibizayo. Uma inqubo yokutshala imali ye-nickel-alloy turbine blade ingadayiliwe, uzothola ubulukhuni obungahambisani noma ukufakwa okuzophazamisa amathuluzi akho ekudluleni kokuqala. Ukulawula i-genesis yezinto ezibonakalayo kunikeza ithimba lemishini ithuba lokulwa lokuhlela ukusikeka okuzinzile, okunembayo. Ngaphandle kwalokho, usuke ugembula nje.
Inkulumo Yokubekezelelana: Inkohliso Yomdwebo
Wonke umuntu ufuna ukubekezelelana okuqinile. Kodwa ukuzicacisa nokubamba ngokungaguquki ekukhiqizeni okuxubene kakhulu yimihlaba emibili ehlukene. Umdwebo ungase udinge ukubekezelela kwebhore okungu-±0.01mm. Isitolo esinekhono singafinyelela lokho ku-CMM ngengxenye ye-athikili yokuqala. Isivivinyo sangempela siyibambe engxenyeni engu-10,000, kubo bonke abasebenzisi bemishini abahlukene, ngokuguga kwamathuluzi, nangokuhlukahluka kweqoqo ezintweni ezingavuthiwe. Kulapho ingxenye ye-China yezibalo ihlanjalazwa khona ngokungafanele futhi nalapho izitolo ezihamba phambili zizihlukanisa khona.
Iphuzu elivamile lokuhluleka akuwona amandla omshini—isiJapane sesimanje noma isiJalimane CNC imishini izikhungo zikhona yonke indawo lapha. I-ecosystem esekelayo. Ingabe uhlelo lokuphatha amathuluzi luqinile? Ingabe ukugxiliswa kokupholisa kuyahlolwa nsuku zonke? Ingabe i-CMM ilinganiselwe futhi ingabe ama-opharetha aqeqeshelwe ukuyisebenzisa ngale kokukhanya okuluhlaza/ukuhamba? Ngike ngangena ezitolo ezinemigqa yemishini ye-DMG Mori embozwe ngoswazi, engenakho ukulawula isimo sezulu. Izingxenye eziphumayo zizokhukhuleka nezinga lokushisa legumbi. Ukunemba akusona isilungiselelo somshini; isiyalo semvelo nenqubo.
Isibonelo, ukwenza amafreyimu amakhulu ensimbi asetshenziselwa umshini wokubona. I-thermal mass inkulu. Uma uyihlukumezile, iyashisa futhi iyanwebeka. Awukwazi ukuvele uyivumele ihlale usuku ukuze iphole—ishejuli yokukhiqiza iqinile. Unjiniyela wenqubo osemnkantshubomvu uzohlela izinyathelo zamaphakathi zokuqeda ukucindezeleka noma asebenzise into epholile ngendlela ehlelekile ukuze alawule ukukhula okushisayo ngesikhathi sokusika. Yilawa ma-tweaks angathandeki, okuhlangenwe nakho achazayo ukunemba imishini. Uzifunda ngokukhipha ukulingisa okumbalwa okumba eqolo, hhayi kumanuwali.
I-Tooling & Fixturing Black Art
Uma ufuna ukubona ukuthi ikuphi inhliziyo yesitolo semishini, ungabheki umshini wabo omusha wama-axis angu-5. Bheka i-fixture cabinet yabo. Ukulungiswa okuhle kuvame ukwenziwa ngokwezifiso, kwesinye isikhathi kubukeka kufiphele, futhi kuhlale kubucayi. Ezingxenyeni eziyinkimbinkimbi, ezinevolumu ephansi, idizayini yokulungisa ingadla isikhathi esiningi sobunjiniyela kunohlelo lwe-CNC ngokwalo. Ukulungiswa okubi kuzokwethula intwasahlobo, ukudlidliza, noma ukuvumela ingxenye ukuthi ihambe ngama-microns ngaphansi kwamandla okusika, ibulale ukunemba kwakho kungakhathaliseki ukuthi ikhodi yakho yinhle kangakanani.
Sake saba nezigigaba zenzwa ye-aluminium enezingalo ezincanyana, ezine-cantilevered. Isakhiwo sokuqala sasebenzisa ama-vises ajwayelekile nama-toe clamps. Izingxenye ziphumelele ukuhlolwa kwe-CMM ngokwezibalo, kodwa ngaphansi kokuhlolwa kokudlidliza emhlanganweni wokugcina, zehlulekile. Umshini wawungenisa i-micro-stress kanye nokuhlanekezela okuncane okuvele ngaphansi komthwalo oguquguqukayo. Ukulungiswa kwakuyisimo somhlathi othambile osekela yonke iphrofayela yengxenye, ukulungisa izici ezibalulekile ngokusetha okukodwa. Izinga le-scrap rate lehlile, kodwa izindleko zokulungisa zenyuka. Ukuchaza lezo zindleko kuklayenti elibona kuphela i-aluminium block + isikhathi somshini kuyinselele eqhubekayo.
Lena enye indawo lapho abakhiqizi abahlanganisiwe banomkhawulo ocashile. Isitolo esifana ne-QSY, esisebenzelana nokulingisa kwaso, ngokuvamile singaklama ukulingisa ngamaphoyinti ahlanganisiwe noma izimbambo eziqinisayo ezisiza ukwenziwa kwemishini, ezikhishwa kamuva. Kungumbono ophelele wengxenye njengento ekhiqiziwe, hhayi nje imodeli ye-CAD okufanele ikhishwe esitokisini.
Isandla Somuntu Kwinqubo Yedijithali
Lokhu kungase kuzwakale njengembuka ngesikhathi sokuzenzakalela okugcwele, kodwa emiksini ephezulu, eyinkimbinkimbi ephezulu China CNC ukunemba machining, uchwepheshe onekhono usengumgoqo—ngendlela enhle. Umuntu okhipha okokugcina, ukuklwebha ngesandla ukuze uthole uphawu olufanele (okusakwenziwa ebusweni obuthile obukhulu bevalvu), noma ukuhlanganiswa okukhethiwe kwezingxenye ezifanisiwe. Ngike ngabona isisebenzi sisebenzisa intonga yethusi nesando ukuze silungise kahle indawo yokushisela enkulu, eyenziwe ngomshini ngamamilimitha ambalwa ukuze iqondaniswe—umuzwa ongekho irobhothi onalo njengamanje.
Ingozi yangempela ekuthuthukisweni kokukhiqiza kweShayina ukuhlanjululwa kwalolu lwazi lwemisebenzi yezandla. Izingcweti ezindala ebezikwazi ukulalela i-cut bese zikutshela ukuthi i-insert iyaqopha bazoyeka. Ingcindezi yokuphusha o-opharetha abasebasha ukuthi bavele balayishe/bakhiphe izingxenye futhi bajahe amamethrikhi okukhiphayo iphezulu. Izitolo ezigcina ezinye zalowo msebenzi wezandla, ezivumela ochwepheshe bazo abakhulu ukuthi balungise okuphakelayo kanye nesivinini kumpukane ngokusekelwe kumsindo nombala we-chip, zikhiqiza izingxenye ezingaguquki, zekhwalithi ephezulu. Kuyinto engaphatheki. Awukwazi ukuyihlola ohlwini lokuhlola lwekhwalithi, kodwa ungayibona enguqulweni ephansi yokulawula inqubo yezibalo (SPC) ngokuhamba kwesikhathi.
Lokhu kudlulela ekucutshungulweni kwangemuva. Ingxenye yensimbi engagqwali eyenziwe kahle ngomshini ingonakaliswa ukupholisha okunolaka noma okungaguquki. Ukwazi ukulandelana kwama-grits, ingcindezi yokufaka isicelo, kanye nendlela yokuphatha imiphetho ukuze ulondoloze ubuqotho obuncane—lokho konke kuyikhono lezandla. Ngokuvamile kuba okokugcina, okuthinta abantu abaningi endaweni CNC ukunemba machining chain, futhi kuthinta ngokuphelele ukusebenza kanye nekhwalithi ebonwayo.
Ukuxhumana: I-Bottleneck Yangempela
Ikhono lobuchwepheshe livame ukuba khona. Iphuzu eliphukayo cishe ngaso sonke isikhathi ukuxhumana. Umdwebo we-2D onezilinganiso ezibalulekile ezingekho. Imodeli ye-CAD enamakhona angaphakathi angenakunyakaziswa. Iketango le-imeyili lapho ukuqedwa kwangaphandle kungachazwa ngokuthi i-Ra noma i-Rz, okuholela ekutheni ingxenye esebenza ngomshini ngokuphelele yenqatshwe. Ukuncipha kwendawo yesikhathi kuyakubhebhethekisa lokhu. Ukucaciswa okusheshayo okuthatha amaminithi angu-5 uma usebhilidini elifanayo kungamisa iphrojekthi amahora angu-48.
Amaphrojekthi aphumelele kakhulu engiwaphethe abandakanya ukuxhumana ngokweqile. Besingabuyisela imidwebo emakiwe, hhayi nje ngemibuzo, kodwa neziphakamiso: Le radius ingakhushulwa ibe ngu-R3 isuka ku-R1.5 ukuvumela ithuluzi elivamile, ukonga izindleko nesikhathi sokuhola ngaphandle kokuthikameze ukusebenza. Noma, Ingabe lokhu kubekezelela kungaxegiselwa ku-±0.1mm? Isebusweni obungahlangani futhi ingadinga i-op yesibili yokugaya ku-±0.02mm. Le ndlela esebenzayo, yokubonisana iguqula ubudlelwano busuka kumthengisi-iklayenti bube kuzakwethu. Kubonisa ukuthi awuyena nje umcishi wezinkinobho; usebenzisa ubuhlakani bokukhiqiza ekwakhiweni kwabo.
Enkampanini esebenza namakhasimende aphesheya, njengamaningi ase-Qingdao, lokhu kugaya kwansuku zonke. Akukhona ngokuba nezikhulumi zesiNgisi ezihamba phambili; imayelana nokuba nonjiniyela bephrojekthi abangahumusha inhloso yobunjiniyela ibe into engokoqobo yokukhiqiza, bese bedlulisela izithiyo nezinketho emuva ngokucacile. Leso singqimba yiso esiphendula umuntu onekhono CNC imishini thenga emthonjeni onokwethenjelwa we ukunemba imishini. Iyingxenye ezenzakalelayo encane, ebaluleke kakhulu yawo wonke umsebenzi. Futhi ngokweqiniso, yingxenye okunzima kakhulu ukuyilungisa, noma kuphi emhlabeni.
