Lub koom haum Fraunhofer rau Additive Production Technology (IAPT) tau qhia yuav ua li cas 3D luam ntawv tuaj yeem txhim kho kev ua haujlwm thiab tsim cov nqi los ntawm kev rov tsim kho lub qhov rooj hinges ntawm cov khoom kim heev tsheb.
Thaum lub sij hawm tsim kho ib feem, IAPT engineers optimized txhua yam los ntawm lub geometry ntawm lub qhov rooj hinges mus rau kev tsim orientation thiab cov txheej txheem tsis ua kom muaj nuj nqis thiab qhov hnyav.
Thaum kawg, qhov kev ua haujlwm no yog tsom rau lub teeb pom kev ntawm qhov tsis tshua pom tseeb uas cuam tshuam rau tus nqi ntawm 3D luam tawm qhov chaw, tsis yog cov duab geometry ntawm lawv tus kheej.
Simplify tsheb ntau lawm
Kev lag luam tsheb yog ib qho ntawm ntau qhov kev lag luam uas tau txais kev tsim khoom siv ntau xyoo, siv cov cuab yeej siv rau ntau yam kev siv. Txog rau tam sim no, txawm li cas los xij, ntau qhov kev siv tau raug txwv rau cov khoom me me, vim tias 3D luam ntawv tseem tsis tau muab cov khoom siv los ntawm cov khoom siv hluav taws xob ib txwm siv - tsis tas yuav ua kom tus nqi ntawm txhua qhov qis. Yog li, qhov project Fraunhofer tej zaum yuav qhia tau hais tias lub tshuab tag nrho yog tam sim no underutilized nyob rau hauv lub automotive sector thiab hais tias high-volume series ntau lawm daim ntawv thov tseem nyob rau hauv lawv cov me nyuam mos.
Thawj qhov kev siv cov ntaub ntawv yog ceev prototyping, raws li kev txhim kho theem ntawm tus qauv tshiab tuaj yeem siv sijhawm txog tsib xyoos. Thaum lub sij hawm R & D, ntau yam qauv ntawm qhov chaw yog inevitably tsim thiab sim, uas txhais tau hais tias sai tsim iterations nrog tsawg kawg nkaus txhuas lub sij hawm: qhov no yog ib qho ntawm cov ntsiab muag khoom ntawm additive manufacturing.
Automakers tseem siv 3D luam tawm cov cuab yeej tsim khoom, xws li jigs thiab fixtures, los pab nrog kev tsim khoom thiab sib dhos ua haujlwm. Muaj txawm tias muaj peev xwm siv hauv cov khoom tom qab uas tau muab pov tseg ib zaug tab sis tam sim no tsis siv lawm. Lub zog thiab hloov tau yooj yim ntawm 3D luam ntawv ua rau cov khoom lag luam luam tawm raws li qhov xav tau, tshem tawm tag nrho cov kev xav tau ntawm lub cev cov khoom lag luam.
3D luam ntawv qhov rooj hinges
Ua ntej pib ua haujlwm tsim, Fraunhofer engineers tau siv ib feem kev tshuaj ntsuam software tsim los ntawm 3D Spark, IAPT spin-off, txhawm rau txheeb xyuas cov tsheb uas tsim nyog rau kev kawm ua qauv qhia.
Nyob rau theem pib ntawm txoj haujlwm, pab pawg thawj zaug tau txheeb xyuas qhov kev coj ua zoo tshaj plaws rau cov khoom siv hauv chav tsev. Cov kws ua choj tau txiav txim siab txog cov qauv kev txhawb nqa tsim nyog, thiab pes tsawg feem lawv tuaj yeem haum rau hauv ib qho kev tsim. Qhov kev taw qhia thawj zaug kev ua kom zoo tshaj plaws no tau ua rau 15 feem pua ntawm cov nqi txuag piv rau 3D luam tawm tsim yam tsis muaj kev xav li no.
Tom ntej no yog topology optimization ntawm lub pob khawm nws tus kheej. Los ntawm kev tshem tawm cov khoom siv tsis tsim nyog thiab ntxiv dag zog rau qhov seem ntawm qhov xav tau los simulate kev quab yuam, cov kws tsim khoom tuaj yeem txo qhov hnyav ntawm lub pob khawm caj npab los ntawm 35 feem pua. Kev txuag cov khoom siv tom ntej thiab lub sij hawm luam tawm luv luv ua rau 20 feem pua cov nqi txuag ntxiv.
Pab pawg Fraunhofer kuj suav cov nqi txuag ntxiv uas cuam tshuam nrog kev txo qis tom qab ua tiav (los ntawm kev txo cov qauv kev txhawb nqa) thiab xaiv cov khoom siv hmoov hlau zoo tshaj plaws rau txoj haujlwm: 10 feem pua txhua.
Interestingly, txoj kev tshawb nrhiav pom tias txawm tias qhov tsim tsis siv nyob rau hauv 3D luam ntawv txheej txheem ua rau muaj peev xwm txuag tau tus nqi. Piv txwv li, cov khaubncaws sab nraud povtseg, ceev scan nrawm, thiab deformation ntawm laser beam profile tag nrho pab txo cov sij hawm tsim, txo cov nqi luam ntawv los ntawm lwm 15 feem pua.
Thaum kawg, qhov kev tsim tus nqi-centric no tau tso cai rau IAPT engineers rau 3D luam lub pob khawm ntawm tus nqi qis dua 80 feem pua ntawm nws cov 3D-printed counterpart yam tsis muaj qhov zoo tib yam. Piv rau lawv cov CNC-milled counterparts, qhov project ua tiav cov nqi thiab qhov hnyav ntawm 50 feem pua thiab 35 feem pua , feem.