Dab tsi yog qhov tseem ceeb ntawm 3D luam ntawv?
3D luam ntawv, tseem hu ua additive manufacturing, yog ib tug tshiab technology uas tau txais kev muaj koob meej nyob rau hauv xyoo tas los no. Nws tau hloov kho cov txheej txheem tsim khoom thoob plaws ntau yam kev lag luam, suav nrog tsheb, aerospace, kev kho mob, thiab cov khoom siv. Cov thev naus laus zis tso cai rau kev tsim cov khoom siv peb-dimensional los ntawm kev tsim digital los ntawm kev ntxiv txheej txheej ntawm cov khoom siv. Txhawm rau nkag siab tias 3D luam ntawv ua haujlwm li cas, nws yog ib qho tseem ceeb kom paub cov ntsiab lus tseem ceeb uas suav nrog cov thev naus laus zis no. Hauv tsab xov xwm no, peb yuav tham txog cov khoom tseem ceeb ntawm 3D luam ntawv thiab lawv lub luag haujlwm hauv cov thev naus laus zis zoo kawg li no.
1. 3D tshuab luam ntawv
Lub tshuab luam ntawv 3D nws tus kheej yog qhov tseem ceeb ntawm cov txheej txheem luam ntawv 3D. Nws yog lub tshuab uas tuaj yeem tsim cov khoom siv lub cev los ntawm cov qauv digital, tseem hu ua 3D tsim. Lub tshuab luam ntawv siv ntau yam txuj ci thiab thev naus laus zis los tsim cov khoom txheej los ntawm txheej, ua raws li cov lus qhia los ntawm cov ntaub ntawv tsim.
Muaj ntau ntau hom 3D tshuab luam ntawv muaj nyob hauv khw. Cov feem ntau muaj xws li fused deposition modeling (FDM), stereolithography (SLA), xaiv laser sintering (SLS), thiab digital light processing (DLP). Txhua hom tshuab luam ntawv siv cov khoom sib txawv thiab cov txheej txheem luam ntawv los tsim cov khoom, tab sis cov ntsiab lus tseem ceeb tseem zoo ib yam.
2. 3D Printing Software
Txhawm rau nqa 3D tsim rau lub neej, cov ntaub ntawv digital yuav tsum tau tsim lossis tau txais. Qhov no yog qhov twg 3D luam ntawv software los ua si. Cov software no tso cai rau cov neeg siv los tsim thiab hloov kho 3D qauv, npaj lawv rau cov txheej txheem luam ntawv. Nws muab cov cuab yeej thiab kev ua haujlwm los hloov lub tswvyim rau hauv cov ntawv luam tawm.
Nrov 3D luam ntawv software suav nrog computer-aided design (CAD) software, uas tso cai rau cov neeg siv los tsim thiab tswj cov qauv 3D, thiab slicing software, uas hloov cov qauv 3D rau hauv cov lus qhia uas lub tshuab luam ntawv 3D tuaj yeem nkag siab. Lub slicing software faib cov qauv 3D rau hauv nyias txheej, txiav txim siab txog txoj hauv kev thiab cov kev txwv rau lub tshuab luam ntawv ua raws thaum lub sijhawm luam ntawv.
3. 3D Printing Materials
Lwm qhov tseem ceeb ntawm 3D luam ntawv yog cov khoom siv los tsim cov khoom siv lub cev. Ntau yam ntaub ntawv tuaj yeem ua haujlwm, xws li plastics thiab hlau mus rau ceramics thiab pob zeb. Kev xaiv ntawm cov khoom yog nyob ntawm qhov yuav tsum tau muaj, cov khoom xav tau, thiab cov kev xav tau ntawm cov khoom kawg.
Piv txwv li, FDM tshuab luam ntawv feem ntau siv cov ntaub ntawv thermoplastic xws li acrylonitrile butadiene styrene (ABS) thiab polylactic acid (PLA), uas yog rhuab thiab extruded los ntawm lub nozzle los tsim cov khoom txheej los ntawm txheej. Ntawm qhov tod tes, SLA tshuab luam ntawv siv cov kua nplaum uas ua kom khov thaum raug ultraviolet teeb. Cov tshuab luam ntawv hmoov zoo li SLS siv cov khoom siv hmoov uas tau xaiv fused ua ke siv lub laser.
4. 3D Printing Filament
Hauv FDM luam ntawv, 3D luam ntawv filament plays lub luag haujlwm tseem ceeb. Nws yog cov khoom uas tau pub rau hauv lub tshuab luam ntawv thiab melted los tsim txhua txheej. 3D luam ntawv filaments feem ntau yog muag nyob rau hauv daim ntawv ntawm ib tug spool thiab muaj nyob rau hauv ntau hom, xim, thiab ntau thiab tsawg.
Cov ntaub ntawv filament feem ntau siv hauv FDM luam ntawv suav nrog ABS, PLA, thiab polyethylene terephthalate glycol (PETG). Txhua yam khoom muaj nws cov khoom tshwj xeeb thiab cov txiaj ntsig, thiab kev xaiv ntawm filament yog nyob ntawm qhov xav tau lub zog ntawm lub zog, hloov tau yooj yim, kub tsis kam, thiab lwm yam khoom ntawm cov khoom kawg.
5. 3D Printing txaj
Lub txaj 3D luam ntawv, tseem hu ua lub phaj tsim, yog qhov chaw ntawm qhov khoom tsim. Nws muab lub hauv paus ruaj khov rau thawj txheej txheej ntawm cov ntawv luam tawm thiab ua kom zoo adhesion. Lub txaj luam ntawv tuaj yeem ua los ntawm ntau yam ntaub ntawv, suav nrog iav, hlau, thiab cov nplaum nplaum.
Txhawm rau txhim kho adhesion thiab tiv thaiv warping lossis distortion, qee lub txaj luam ntawv yog rhuab. Cov cua sov ntawm lub txaj tuaj yeem pab thawj txheej ntawm cov ntawv luam tawm rau saum npoo, kom ntseeg tau tias kev luam ntawv tiav. Tsis tas li ntawd, lub txaj rhuab tuaj yeem txo lossis tshem tawm cov kev ntxhov siab sab hauv hauv cov khoom luam tawm, ua rau muaj qhov tseeb qhov tseeb.
6. 3D Printing Nozzle
3D tshuab luam ntawv nozzle yog ib qho me me uas ua lub luag haujlwm tseem ceeb hauv kev luam ntawv extrusion-raws li FDM. Nws yog lub luag hauj lwm rau melting lub filament thiab precisely depositing nws mus rau lub printing txaj los yog yav tas los cov khaubncaws sab nraud povtseg. Lub nozzle txoj kab uas hla txiav txim siab qhov dav ntawm extruded filament thiab ncaj qha cuam tshuam rau theem ntawm kev nthuav dav thiab kev daws teeb meem ntawm qhov kawg luam tawm.
Nozzles feem ntau yog ua los ntawm tooj dag los yog cov hlau tawv thiab tuaj nyob rau hauv txawv diameters. Nrov nozzle qhov ntau thiab tsawg ntawm {{0}}.2 hli txog 0.8 hli, txawm tias muaj lwm qhov ntau thiab tsawg. Cov nozzles me me tsim cov ntsiab lus zoo dua tab sis yuav xav tau lub sij hawm luam ntawv ntev dua, thaum lub nozzles loj tuaj yeem ua kom nrawm nrawm dua, tab sis nrog txo cov ntsiab lus.
7. 3D Printing Platform
Lub 3D luam ntawv platform yog ib qho tseem ceeb ntawm cov txheej txheem luam ntawv vim nws ua kom ruaj khov thiab raug ntawm cov ntawv luam tawm. Nws tuav cov khoom luam tawm nyob rau hauv qhov chaw thiab tiv thaiv nws los ntawm kev txav los yog hloov thaum lub sij hawm luam ntawv. Lub platform feem ntau yog kho tau kom haum rau qhov sib txawv ntawm qhov ntau thiab tsawg thiab qhov siab.
Lub platform kuj tseem tuaj yeem suav nrog cov yam ntxwv ntxiv los txhim kho cov txheej txheem luam ntawv. Piv txwv li, qee lub platforms muaj cov txheej txheem tsim hauv qib kom ntseeg tau tias lub txaj luam ntawv yog sib npaug rau lub tshuab luam ntawv lub taub hau. Lwm tus muaj qhov nplaum ntawm tus kheej los yog sib nqus kom yooj yim tshem tawm ntawm cov khoom luam tawm tom qab ua tiav.
8. 3D Printing Support Structures
Hauv ntau cov txheej txheem luam ntawv 3D, cov qauv kev txhawb nqa yuav xav tau. Cov qauv kev txhawb nqa yog cov qauv ib ntus uas luam tawm nrog rau cov khoom tseem ceeb kom muaj kev ruaj ntseg thiab tiv thaiv kev tawg thaum lub sij hawm luam ntawv. Lawv tuaj yeem raug tshem tawm tom qab thaum luam ntawv tiav.
Cov qauv kev txhawb nqa yog tsim nyog thaum luam ntawv overhangs, txuas hniav, los yog cov geometries nyuaj uas yuav ua rau tsis zoo los yog poob yam tsis muaj kev txhawb nqa ntxiv. Cov qauv no feem ntau yog tsim los ua kom yooj yim tawg lossis soluble, ua rau lawv tshem tawm yam tsis muaj kev puas tsuaj rau cov khoom kawg.
9. Cov khoom siv tom qab ua tiav
Tom qab luam ntawv, cov khoom feem ntau xav tau tom qab ua tiav kom tiav qhov xav tau tiav lossis txhim kho cov khoom tshwj xeeb. Cov cuab yeej siv tom qab ua tiav thiab cov txheej txheem sib txawv nyob ntawm cov khoom siv thiab cov txiaj ntsig kawg uas tau npaj tseg.
Cov txheej txheem tom qab ua tiav feem ntau suav nrog kev tshem tawm cov qauv kev txhawb nqa, ua kom lub ntsej muag zoo nkauj los ntawm kev xuab zeb lossis polishing, siv cov txheej txheem los yog xim, thiab cov txheej txheem kho ntxiv rau cov ntaub ntawv tshwj xeeb. Tom qab ua tiav yog ib kauj ruam tseem ceeb hauv kev ua tiav qhov xav tau zoo nkauj, kev ua haujlwm, thiab kev ua haujlwm ntawm cov khoom luam tawm.
10. 3D Printing khoom siv kev nyab xeeb
Thaum 3D luam ntawv feem ntau muaj kev nyab xeeb, nws yog qhov tseem ceeb uas yuav tsum tau ua qee yam kev ceev faj kom muaj kev nyab xeeb thaum ua haujlwm. Cov cuab yeej siv kev nyab xeeb yuav suav nrog cov tsom iav lossis tsom iav kev nyab xeeb los tiv thaiv ob lub qhov muag los ntawm kev phom sij, tshwj xeeb tshaj yog thaum ua haujlwm nrog cov khoom siv hmoov los yog kua.
Tsis tas li ntawd, nws yog ib qho tseem ceeb rau kev khiav lag luam lub tshuab luam ntawv nyob rau hauv ib qho chaw zoo-ventilated los txo cov kev pheej hmoo cuam tshuam nrog cov pa taws los yog cov khoom tawm thaum lub sij hawm luam ntawv. Qee cov ntaub ntawv siv hauv 3D luam ntawv tuaj yeem tso cov pa phem los yog khaus khaus, thiab kev ua pa kom zoo los yog siv cov tshuab fume extraction yog pom zoo.
Xaus
3D luam ntawv thev naus laus zis txuas ntxiv ua kom muaj kev vam meej hauv ntau qhov chaw, muab cov sijhawm tsis tau muaj dua los rau kev tsim kho tshiab thiab kho kom haum. Cov khoom tseem ceeb ntawm 3D luam ntawv, suav nrog lub tshuab luam ntawv, software, cov ntaub ntawv, filament, txaj, nozzle, platform, kev txhawb nqa, cov khoom siv tom qab ua tiav, thiab kev ntsuas kev nyab xeeb, txhua tus ua haujlwm ua ke los hloov cov qauv digital rau hauv cov khoom siv lub cev. Los ntawm kev nkag siab txog cov ntsiab lus tseem ceeb no, peb tuaj yeem siv tag nrho cov peev txheej ntawm 3D luam ntawv thiab tshawb nrhiav qhov muaj peev xwm tshiab hauv kev tsim, tsim, thiab tshaj.