Kusindikiza kwa SLS 3D ndiukadaulo wosindikizira wa bedi wa 3D womwe umadziwika ndi kulondola kwake komanso palibe mawonekedwe othandizira. Komabe, magawo osindikizidwa a SLS 3D amatheka pokhapokha potsatira luso loyenera ndi mapangidwe a SLS. Nkhaniyi ikuwonetsa momwe kusindikiza kwa SLS 3D kumagwirira ntchito, maupangiri pakupanga kwa SLS, ndi mapulogalamu omwe amapangidwa kuti azitha kusindikiza bwino.
Kodi Kusindikiza kwa SLS 3D kumagwira ntchito bwanji
SLS ndiukadaulo wosindikiza wa 3D wogwiritsidwa ntchito ndi ambiri ntchito za prototyping omwe amagwiritsa ntchito laser kuti apange ufa wa polima ndikumanga gawo losanjikiza molingana ndi mtundu wa CAD. Pansipa pali kufotokozera momwe ukadaulo umagwirira ntchito:
Choyamba, zinthu za ufa zimatenthedwa mpaka kutentha kwambiri ndikuyikidwa m'zigawo zopyapyala (pafupifupi 0.1mm) ndi tsamba lopakanso pa nsanja yomanga. Pambuyo pake, laser imayang'ana pamwamba pa nsanja yomanga.
Pambuyo kupanga sikani, ndi laser kusankha sinter zinthu ufa kulimbitsa izo. Kusanthula kumapitilira mpaka kutha komaliza. Pambuyo pake, nsanja yomangayo idzasunthira pansi pamtunda wosanjikiza. Panthawi imeneyi, ufa wosasunthika udakali pa nsanja yomanga. Zotsatira zake, magawo a SLS safuna zida zothandizira.
Tsamba la recoating kenako limayika ufa watsopano wosanjikiza, ndipo njirayi imabwerezedwa mpaka kusindikiza konse kutatha. Posindikiza, chidebecho chidzakhala ndi ufa wosalowetsedwa ndi gawo la sintered.
Maupangiri Opanga Magawo Amakonda Ndi SLS 3D Printing
Monga njira zopangira magawo monga jekeseni, kuponyera kufa, ndi zonse CNC Machining ntchito, kusindikiza kwa SLS 3D kumabwera ndi zovuta zake. Nawa maupangiri angapo omwe angakuthandizeni kukhathamiritsa kapangidwe kanu ka SLS.
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General Tolerances
Kulolerana kwakukulu kumatengera kukula kwa magawo osindikizidwa komanso kukhazikika kwa chosindikizira cha 3D. Ngakhale kuli kofunikira, muyenera kuchepetsa kulolerana kumadera kumene kuli kofunika kwambiri. Mwachitsanzo, magawo omwe amafunikira kusonkhanitsa. Osindikiza ambiri a SLS ali ndi ± 0.3mm ndi ± 0.05mm kusindikiza molondola.
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Kuwongolera Kumbali
Makulidwe a khoma la magawo osindikizidwa a SLS 3D amatsimikizira kukhazikika kwawo panthawi yosindikiza komanso pambuyo pake. Nthawi zambiri, kukhala ndi khoma lokhuthala kumalepheretsa magawo osindikizidwa kuti asagwe panthawi yosindikiza kapena kusweka pambuyo pa kusindikiza.
Malinga ndi okonda kusindikiza a SLS 3D, makulidwe ochepa a khoma ayenera kukhala pakati pa 0.7mm (PA 12) ndi 2.0mm (carbon-polyamide). Komabe, ndizothekanso kukhala ndi makulidwe a khoma pafupifupi 0.6mm, ngakhale mungafunike chothandizira.
Kusindikiza ndi makulidwe a khoma osakwana 0.5mm kumabweretsa magawo osindikizidwa chifukwa cha kutentha kwa laser.
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Kukula Kwachikulu
Kusindikiza kwa SLS kumathandizira mabowo osindikizira mwachindunji, mosiyana ndi njira zina zosindikizira za 3D komanso zosasindikiza za 3D. Komabe, dzenje sikuyenera kukhala laling'ono kuposa 1.5mm m'mimba mwake. Kusindikiza osakwana 1.5mm kungayambitse ufa wosalowetsedwa kudzaza dzenje. Chifukwa chake, sindikizani pa dzenje kukula kwake kuposa 1.5mm m'mimba mwake.
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Kuthawa Mabowo
Ukadaulo wa bedi lamphamvu umakupatsaninso mwayi wopanga magawo opanda kanthu kuti muchepetse kulemera ndi kugwiritsa ntchito zinthu. Komabe, ufa wosasunthika ukhoza kulowa mu dzenje pamene mukusindikiza. Chotsatira chake, mabowo othawa ndi ofunikira kuti achotse zinthu zosalowetsedwa. Kutuluka kuyenera kukhala osachepera 3.5mm m'mimba mwake.
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Kupindika kwa malo akuluakulu athyathyathya
Warping ndi cholakwika cha 3D chosindikizira chomwe chimachitika chifukwa cha kuzizira kosiyana pambuyo posindikiza, makamaka ndi malo akuluakulu athyathyathya. Choncho, malo oterowo ayenera kupeŵedwa. Komabe, ngati ndi gawo lofunikira kwambiri pamapangidwewo, muyenera kugwiritsa ntchito zida zothandizira (izi sizingathetse vutoli nthawi zonse).
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Engraving ndi Embossing
Pazigawo zomwe zimafunikira kujambula kapena kukometsera, mutha kuwongolera mawonekedwe popanga zigawozo ndi kuya kosachepera 1mm. Izi ndizofunikira pakuwerengera pambuyo pakukonza, monga kutsika kwa media komwe kungapangitse kuti iwonongeke. Pamalemba, muyenera kugwiritsa ntchito kuya kosachepera 2mm kuti mumveke bwino.
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Zigawo zolumikizana
Kusindikiza kwa SLS 3D ndikoyenera kusindikiza mating ndi kusuntha mbali popanda kufunikira kuti zigawozo zikhale zosiyana. Zingakhale bwino mutapanga zida zomwe zimayenera kulumikizidwa ndi chilolezo chochepera 0.5mm. Chilolezochi chidzathandiza kuchotsa ufa wosalowetsedwa kuti magawowo asasakanike.
Ntchito zodziwika bwino zamapangidwe
Zigawo zosindikizidwa za SLS 3D zimagwiritsidwa ntchito popanga gawo kapena ntchito za prototyping m'mafakitale angapo. M'munsimu muli zina zomwe zimagwiritsidwa ntchito popanga ndondomekoyi:
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Kutaya
Nayiloni imagwira ntchito popanga ma axles chifukwa cha kusalala kwake, kukana kwa mankhwala, makina ocheperako, komanso kuthamanga kwake. Mukamagwiritsa ntchito nayiloni popanga ma axle othamanga, njira yovomerezeka yonyamulira pamwamba ndi 0.3mm. Kuwonjezera apo, kuchotsedwa koyenera kwa ufa wosasunthika n'kofunikira kuti mukhale ndi shaft yosalala.
Mapangidwe achitsanzo cha CAD akuyenera kukhala ndi mabowo othawirapo osachepera 3.5mm m'mimba mwake ngati kuli kotheka komanso chilolezo cha 2mm pakati pa dzenje la shaft ndi tsinde lothamanga kuti muchotse ufa wosalowetsedwa.
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Integrated hinges
Kusindikiza kwa SLS kumagwiritsidwa ntchito popanga ma hinge ophatikizika. Thumba lokhala ngati trapezoid lomwe limakhala ndi mpira wozungulira pang'ono lidzatulutsa hinge yokhala ndi mikangano yotsika komanso kukhazikika kokwanira. Kuphatikiza apo, payenera kukhala chilolezo cha 0.2mm pakati pa bwalo ndi thumba ndi chilolezo cha 0.3mm pamipata ina.
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Makanki
Nayiloni ya SLS imagwira ntchito pamapangidwe a tanki. Mukamapanga akasinja, makulidwe a khoma akuyenera kukhala oposa 1mm, ndipo payenera kukhala mabowo othawirapo kuti muchotse ufa wochulukirapo komanso wosalowetsedwa. Kuphatikiza apo, thankiyo imatha kuphimbidwa kuti igwire ntchito m'madzi amphamvu monga mafuta kapena kukonza kulimba kwake kwamadzi.
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Mitundu
Magawo osindikizidwa a SLS 3D ali ndi mawonekedwe apamwamba kwambiri. Zotsatira zake, pakhoza kukhala zovuta pakusonkhanitsa zida zosindikizidwa za SLS 3D. Njira yabwino ingakhale kugwiritsa ntchito nayiloni ya SLS polumikiza kumodzi kokha (kaya dzenje kapena bawuti).
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Ma Hinges amoyo
Kusindikiza kwa SLS 3D ndiye njira yabwino kwambiri yopangira ma hinji ogwirira ntchito. Kuti mupange mahinji, ilowetseni mwa kutenthetsa ndi kusinthasintha mmbuyo ndi mtsogolo. Hinge yamoyo iyenera kukhala yokhuthala 0.3-0.8mm ndi utali wochepera 5mm.
Kutsiliza
Kusindikiza kwa SLS 3D ndikotchuka chifukwa cha kulondola kwake komanso palibe mawonekedwe othandizira. Komabe, magawo osindikizidwa a SLS 3D amatheka pokhapokha potsatira maupangiri a SLS ndi zokumana nazo. Nkhaniyi ikukamba za kusindikiza kwa SLS 3D, maupangiri a magawo apangidwe, ndi ntchito zina za njirayi. Kutsatira malangizowa, khalani otsimikiza za magawo opanda cholakwika a SLS
