Ukuhamba ngokujonge ngeNgcali ye-NextEngine ingcali uDan Gustafson
Xa uklanywa into ye-3D usebenzisa inkqubo ye-CAD, iiprogram zokuthanda imodeli ezithandwa kakhulu zisebenzisa i-"polygon mesh" okanye "I- N kwi- U Uhlobo R lwe- B asis S " (NURBS) ukuchaza into.
Kwindlela yokudala ifayile yokushicilela kwe-3D, ezininzi iinkqubo ze-CAD zikuvumela ukuba uguqule ifayile kwifomathi ye-STL (eguqula ibe yintonga ye-polygon), ngoko unokuzibuza ukuba ngaba ufanele udale into ngemitha ekuqaleni okanye ukuba kungcono ukusebenza kwi-NURBS kwaye wenze ukuguqulwa.
Saxoxisana noDan Gustafson kwi- NextEngine , inkampani ehamba phambili ye-3D scanner, ukufumana iingongoma eziphambili zeentlobo ezimbini ezinkulu zeemodeli ze-3D.
Ngokubhekiselele kwi-computer modeling, i-NURBS iya kudala imifanekiso elula. Kuya kudala imodeli echanekileyo kunye nemigangatho engaphelelwanga. Ubunjineli kunye nezicelo zomatshini, ukunikezelwa kwekhompyutheni okusekelwe kwi-NURBS kukhethwa kwiipolisi ezixhomekeke kwiinkqubo ezisekelwe. Ngokuqhelekileyo, xa uhlola izinto kwiprogram ye-CAD, baqala ukutshekishwa ngokusebenzisa i-NURB
Xa usebenza kwi-NURBS, ubeka ikhefu phakathi kwamanqaku. Amaphuzu aya kwenza umxhaka oxinxantathu ngaphezu kwekhalo. Ukulungelelanisa ijika, kufuneka ulungelelanise amanqaku kwindawo. Oku kunzima ukuyiqonda.
I-NURBS inemiqathango yayo. Ngenxa yokuba ifom ye-2-dimensional rendering, kufuneka udale "iipatches" ozidibanisa kunye ukuze wenze isakhiwo esiyinkimbinkimbi yesithathu. Kwezinye iimeko, ezi zikhonkwane azihambelani ngokugqibeleleyo kwaye "zibonakala" zibonakala. Kubalulekile ukujongisisa ngento yakho xa uyilo kwaye uqinisekise ukuba iifom ehambelana ngokufanelekileyo phambi kokuba uyiguqule ibe yindoda yefayile ye-STL.
Imfono yePolygon yenziwe ngokukodwa ukunikela izinto ezi-3-dimensional kwikhompyutha. Ngenxa yoko, yile fomati esetyenziswa yiifayile ze-STL. Xa usebenzisa i-triangles ukudala imilo ye-3D, udala ukulingana kwee-edges. Awusoze ufezekise ngokugqibeleleyo umfanekiso ogqityiweyo owenziwe kwi-NURBS, kodwa i-mesh ilula ukuyifumana. Unokukrazula uze udibanise kwi-mesh ukuyihambisa kwaye ufezekise iziphumo ezifanayo ngexesha ngalinye kuba kungabalwa amanqanaba emathematika amaphuzu.
Xa usebenza kwi-NURBS kwaye uguqula ifayile kwifayile, unokukhetha isigqibo sakho. Isisombululo esiphezulu sinikeza iindlovu ezilula kwizinto oziprintayo. Nangona kunjalo, isisombululo esiphezulu sithetha ukuba uya kuba nefayile enkulu. Kwezinye iimeko, ifayile ingaba enkulu kakhulu ukuba iphrinta ye-3D ilandele.
Ngaphandle kokufumana ukulinganisela okugqibeleleyo phakathi kwesisombululo kunye nobukhulu befayile, ungasebenzisa ezinye iindlela zokucoca ukunciphisa ubungakanani befayili yakho. Ngokomzekelo, kufuneka uqiniseke ukuba xa usenzile into ongeyibumba into engaphakathi engayi kuphrintwa. Enye indlela oku kwenzeka ngayo ukuba ujoyina imilo emibini kunye, ngamanye amaxesha iindawo zokujoyina zihlala zichazwe, nangona, xa ziprinta, aziyi kuba ziindawo ezihlukeneyo.
Ingaba uqala ukwenza into yakho usebenzisa i-NURBS okanye i-mesh iya kuxhomekeka kukukhetha kwakho. Ukuba ufuna inkqubo elula ongeke uyiguquke, ukuqala kwisikhongo kuya kuba yinto ekhethekileyo. Ngakolunye uhlangothi, ukuba ufuna inkqubo eyenzela iifowuni ezigqibeleleyo, kufuneka ukhethe owodwa usebenzisa i-NURBS (iRhinino ngumzekelo omnye owenene, ngokuqinisekileyo, unokujonga ngokubanzi: Ziziphi i-NURBS?).
Ndiya kuvala le posi ngala: Iprogram ye-3D Design okhululekileyo ngayo, inokwenzeka ukuba, inokukhetha ukuthumela i-NURBS okanye iFayile yefayile kwi-STL okanye enye ifomathi yokushicilela i-3D. Ekugqibeleni, siya kuthobela iingcebiso zikaSherri Johnson, waseCatzPaw, esathi saxoxwa ngeengcebiso kunye neendlela: Ukulungisa iiFayile ze-3D kunye ne-Meshmixer ne-Netfabb .
"Ifayile ye-STL idinga ukuvulwa kwiprogram yesibonelelo ekwazi ukujonga imiba nokulungisa loo miba, ngokuzenzekelayo okanye ngesandla. Ezinye iinkqubo zokucoca (njenge-Simplify3D) zinika izixhobo zokulungisa njengoko ezinye zeenkqubo ze-CAD (i-SketchUp extensions). Izicelo ezinikezelweyo ezikhululekile, kwaye ezibandakanya izixhobo zokulungisa kakhulu zi-Netfabb kunye ne-MeshMixer . "
Ezinye izixhobo ezinzulu zokuqonda iindlela ezahlukeneyo zemizekelo zivela kwi- officeaus yokuprinta ye-3D (apho sikhankanya i-Sculpteo ne-Shapeways, ukubiza nje isibini). Ezi femu kufuneka zisebenzise iintlobo zeefayile kunye neefom ezivela phantse yonke inkqubo yoyilo lwe-3D kwiplanethi kwaye kaninzi zifumane iingcebiso kunye neziphakamiso zokufumana ifayile zakho ukuprinta ngokufanelekileyo.
Nantsi enye evela kwi-Sculpteo enikeza isifundo ngokusebenzisa i-Rhino 3D, ngokukodwa. Unokufunda ngokusebenzisa i-Meshmixer okanye i-Autodesk Inventor okanye i-Catia okanye i-Blender kweli candelo le-Sculpteo: IziThuthi ze-3D zokuprinta: Lungiselela umzekelo wokushicilela kwe-3D .
Ngenxa yokuba abaninzi beentengiso kunye neengcaphephe zekhompyutheni zekhompyutheni beza kutshicilelwa kwi-3D kunye namava okudala amava, i-Shapeways inikezela enye enokwenene neyayilwayo: Indlela yokulungisa i-Render / Animation Model ye-3D Printing.
I-Stratasys Direct Manufacturing (eyayiyi-RedEye) inomnye omkhulu kwiNkqubo yokuCwangcisa ifayile ye-STL esabelana ngayo ngasekupheleni kweSt .