Abacwaningi at I-University of Cambridge benze indlela yokusebenzisa i-holography ekuphrinteni kwe-3D.
I-Holography yindlela ebonakalayo yokukhiqiza nokuqopha inkambu yokukhanya enzinhlangothi ezintathu ngokusebenzisa imithombo eminingi yokukhanya ukudala inkambu yokuphazamiseka. Cishe uke wabona ama-holograms ngezikhathi ezithile; yilezo zithombe eziyinqaba ezavele zaqhamuka zaba yi-3D egcwele lapho ikhanyiswa kahle.
Okwenzekayo ukuthi ukukhanya kuvumela ukurekhodwa kukhiqize okuthile okusondele kwephethini lokuphazamiseka langempela, ngakho-ke isithombe sokuqala se-3D siyabonakala.
Yini eMhlabeni lokhu okuzohlangana ngayo nokuphrinta kwe-3D, ubuza? Nami ngenzile, kepha kubonakala sengathi kukhona ukusetshenziswa okuthakazelisayo kakhulu kwezobuchwepheshe, ikakhulukazi lapho wenza i-powder bed fusion (PBF).
Izinkinga ze-PBF ne-SLA
I-PBF yinqubo ejwayelekile yokuphrinta ye-3D lapho amandla aphezulu, imvamisa avela ku-laser enamandla, ekhanyisa indawo encane embhedeni oyisicaba we-powder ocolekile noma i-resin. Amandla ancibilikisa leyo ndawo, futhi ungqimba wonke ekugcineni ulandelwa yi-laser. Kusetshenziswa izinto eziningi futhi inqubo iyaphinda.
Inkinga ukuthi ukuze kutholakale ukuphrinta ngezakhi zangaphakathi ezakhiwe kahle umuntu kufanele asebenzise ukulawula okucacile kakhulu kuzo zonke izinto zenqubo yokuphrinta, kufaka phakathi izinga lokushisa elincane, amaphesenti e-oxygen, ikhwalithi ye-powder, nokukhanya kwe-laser. Kulula ukukhiqiza ukuphrinta kwe-3D okungaphansi kwamandla kunalokho okwenziwe ngezinqubo ezijwayelekile zokwenza, ngakho-ke lokhu kuyisithiyo esikhulu ekutholeni ukuphrinta kwe-3D.
Ngenxa yalokho abakhiqizi abaningi bephrinta ye-3D basebenzise isikhathi esiningi nomzamo wokucwenga inqubo yabo ye-PBF ne-SLA ukuqinisekisa ukuphrinta kwekhwalithi ephezulu kakhulu ye-3D. Kodwa-ke, kuhlale kunendawo yokwenza ngcono, futhi yilokho ucwaningo lwe-holographic olungakwenza.
Ukuphrinta kwe-3D Laser 3D
Indlela ye-holographic ivumela ukulawula okungcono kakhulu kokukhanyisa. UC uyachaza:
"Kodwa-ke, ama-holograms akhiqizwa yikhompyutha angasiza ekulawuleni ukusatshalaliswa kwala mandla ngobukhulu obuthathu kunokuba kube kubili, ngenxa yokuphambuka okubonakalayo (ukugoba kwamagagasi okukhanya azungeze isithiyo). Inqubo yokuncibilika ingabhekwa ngesikhathi sangempela futhi ihologram ingabalwa kabusha ukuze ilawule ukwakheka, ikhwalithi kanye nezinto zenqubo ye-AM. ”
Lokhu kunqoba inkinga yokwehlukahlukana kokuqukethwe okubangela ukuqiniswa okungahambelani. Ngokombono lokhu kungabhekwa futhi kulawulwe, futhi lokho kungasho ukuthi, isibonelo, ukuphrinta kwensimbi enamandla kakhulu kwe-3D. Le ndlela izophinde isebenzele izinhlelo ze-polymer PBF ne-SLA.
Yonke i-PBF Layer?
Kukhona okunye okungahle kwenzeke ngokuphawulekayo ngale ndlela entsha yokukhanyisa i-laser: ukukhiqizwa ngasikhathi sinye kongqimba lonke ngasikhathi sinye. Ilungu leqembu kanye nomfundi we-Ultra Precision Engineering PhD uPeter Christopher uyachaza:
"Inhloso ngukuncibilikisa ungqimba lonke lwensimbi yempuphu ngasikhathi sinye, ngaleyo ndlela kuthuthukiswe ijubane lokwenziwa, kanye nokususa izingqinamba eziningi ezihlobene nokushisa ezikhona ezindleleni zamanje."
Uma ngikuqonda kahle lokhu, kusho ukuthi inqubo ye-holographic ingahle idale inkambu yokukhanya ehambelana nokukhanyisa okudingekayo kongqimba lonke lwe-PBF, kuzo zombili izindawo zensimbi neze-polymer. Uma amandla anele efinyelela iphikseli ngayinye yendawo yokuphrinta, lokhu kungasho ukwanda okuphawuleka ngokweqile kwezivinini zokuphrinta ze-PBF, eziphakathi kokuhamba kancane emhlabeni ukuphrinta kwe-3D.
Vele, lolu wucwaningo nje kuleli phuzu, kepha ngikholwa ukuthi amandla makhulu ngakho-ke singabona lolu hlobo lwe-laser system luvela kumaphrinta we-3D ezentengiso ezizayo.
