Machitidwe amakono a laser — kuyambira ma laser a femtosecond pulse omwe amagwiritsidwa ntchito pochita opaleshoni ya maso ndi zinthu zazing'ono mpaka ma laser a picosecond mu semiconductor scribing ndi ultrafast spectroscopy — ayenera kuyika miyeso yawo ndi zinthu zogwirira ntchito molondola kwambiri poyerekeza ndi malo omwe amayesedwa mu ma micrometer, nthawi zina ma nanometer. Fiziki ya kuwala ikhoza kukhala yokongola kwambiri, koma makina omwe amayika magawo a kuwala ndi ntchito ayenera kukhala olondola mofanana.
Kupyolera mu ntchito zosiyanasiyana izi za laser, gawo limodzi limawonekera mobwerezabwereza: gawo la granite lokhala ndi mpweya. Kuphatikiza komwe kumawoneka ngati kotsutsana - miyala yakale yolumikizidwa ndi ukadaulo wapamwamba wa pneumatic bearing - gawo la granite lokhala ndi mpweya lakhala muyezo weniweni mu makina a laser olondola chifukwa limathetsa, bwino kuposa njira ina iliyonse, mavuto oyambira auinjiniya a kayendedwe kopanda kukangana, kugwedezeka kosiyana, komanso kukhazikika kwa magawo.
Nkhaniyi ikufotokoza mfundo za uinjiniya zomwe zili kumbuyo kwa magawo a granite onyamula mpweya, ikufotokoza chifukwa chake granite ndi ma bearing a mpweya amapanga mgwirizano wopindulitsa kwambiri, ndipo imafotokoza momwe amagwiritsidwira ntchito m'njira zamakono za laser.
Mabehewa a Mpweya: Kuyenda Kopanda Kukangana pa Nanometer Scale
Maberiya azinthu zozungulira wamba — mipira kapena ma rollers oyenda m'misewu ya raceways — ndi ntchito yogwira ntchito kwambiri pamakina oyendera. Ndi odalirika, ang'onoang'ono, komanso amatha kunyamula katundu wambiri. Koma ali ndi malire ofunikira: amasonyeza khalidwe loti ndodo isagwedezeke, kayendedwe ka micro-mosasinthasintha komwe kumachitika chifukwa cha kugwedezeka kosasinthasintha kumapereka mpata wa kugwedezeka kwa kinetic panthawi yoyenda koyamba, komanso pamene kusokonekera kwa malo ozungulira kumalumikizana.
Pa masikelo akuluakulu, kutsetsereka kwa ndodo ndi vuto laling'ono. Pa sikelo ya nanometer, ndi cholepheretsa chachikulu pakuyenda bwino komanso kobwerezabwereza. Dongosolo loyimitsa lomwe liyenera kukhala ndi kubwerezabwereza kwa nanometer 10 silingathe kulekerera bearing yomwe imawonetsa kutsetsereka kwa ndodo kwa nanometer 100 panthawi yoyambira kuyenda.
Ma bearing a mpweya amachotsa kutsetsereka kwa ndodo mwa kusintha kukhudzana ndi makina ndi filimu yopyapyala ya mpweya yopanikizika — yomwe nthawi zambiri imakhala yokhuthala ya maikromita 5–15 — yomwe imalekanitsa kwathunthu gawo losuntha ndi malo ofotokozera. Popanda kukhudzana ndi makina, palibe kukangana m'njira yachikhalidwe, palibe kutsetsereka kwa ndodo, komanso palibe kuwonongeka. Gawolo limatsetsereka pamlengalenga, ndipo kuyendako kungakhale kosalala komanso kobwerezabwereza monga momwe kulunjika kwa malo ofotokozera kumaloleza.
Zotsatira za kuyenda molondola n'zakuya kwambiri. Gawo lonyamula mpweya limatha kuyenda mowonjezereka kwa nanometers ndipo kubwerezabwerezako kungayambitse mavuto.zida zoyezeraimagwiritsidwa ntchito kutsimikizira izi. Liwiro likhoza kulamulidwa kufika pamlingo wofanana wa 0.01% pa liwiro kuchokera pa ma micrometer pa sekondi imodzi mpaka mamita pa sekondi imodzi. Chifanizirocho chokha chimapangitsa kuti pasakhale kusiyana kwa mphamvu pa ulendo wake wonse - chinthu chofunikira kwambiri pamakina a laser komwe kusokonezeka kwa mphamvu kungachititse kuti ma resonance a makina ayambe komanso kuti kuwala kwa dzuwa kuwonongeke.
Chifukwa Chake Granite Ndi Malo Oyenera Owonetsera Mpweya
Gawo lonyamula mpweya limakhala labwino ngati pamwamba pomwe likukwera. Malo ofunikira ayenera kukwaniritsa zofunikira zingapo nthawi imodzi.
Choyamba, kusalala. Ma bearing a mpweya amakhudzidwa ndi zolakwika za mawonekedwe a pamwamba chifukwa makulidwe a filimu ya mpweya (nthawi zambiri amakhala 5–15 μm) ndi ofanana ndi kukula kwa kusalala kwa pamwamba komwe kungapezeke pogaya ndi kulumikiza molondola. Kutsika kwa pamwamba kwa 1 μm kumayambitsa kusiyana kwa 1 μm mu mpweya - zomwe zikutanthauza mwachindunji kulakwitsa kwa malo oyima a 1 μm mu siteji. Kuti dongosolo liziyang'ana kulondola koyima kwa 100-nanometer, malo ofunikira ayenera kukhala athyathyathya mpaka kufika pa ma nanometer 100 pamlingo wonse woyendera.
Chachiwiri, kukhwima pamwamba. Filimu ya mpweya mu mpweya imakhazikika chifukwa cha mphamvu zokhuthala za mpweya zomwe zimayenda pakati pa bearing pad ndi malo ofotokozera. Kukhwima kwambiri pamwamba kumasokoneza filimu ya mpweya, kumapangitsa kuti mphamvu zisinthe, komanso kumabweretsa phokoso mu kayendedwe ka siteji. Kukhwima pamwamba komwe kuli pansi pa Ra 0.05 μm (50 nanometers) nthawi zambiri kumafunika kuti pakhale mpweya wabwino kwambiri.
Chachitatu, kuuma ndi kukana kuvala. Ngakhale kuti ma bearing a mpweya amapangidwa kuti apewe kukhudzana, nthawi zina kukhudzana kumatha kuchitika panthawi yoyambira, kuyimitsa mwadzidzidzi, kapena zochitika zolephera kupereka mpweya. Malo ofunikira ayenera kukhala olimba mokwanira kuti asawonongedwe kapena kuwonongeka chifukwa cha zochitikazi. Granite, yokhala ndi kuuma kwa Mohs kwa 6-7 (komwe kumapangidwa makamaka ndi kuchuluka kwa quartz), imapereka kukana kuvala bwino kwambiri kuposa aluminiyamu kapena mapulasitiki ambiri, ndipo imafanana kapena kuposa chitsulo cholimba pachifukwa ichi.
Chachinayi, kukhazikika kwa kutentha. Mpata wa mpweya mu bearing ya mpweya ndi gawo lolamulidwa bwino la geometrical. Kukula kwa kutentha komwe kumasintha mpata kumasintha kuuma kwa bearing ndi mphamvu ya katundu - ndikusintha malo ofotokozera a siteji. Kuchuluka kwa kutentha komwe kumapezeka mu granite, kuphatikiza ndi kuchuluka kwake kwakukulu kwa kutentha (kuyankha pang'onopang'ono kusintha kwa kutentha), kumapereka kukhazikika komwe makina olondola a laser amafunikira.
Chachisanu, mphamvu zopanda maginito komanso zosayendetsa magetsi. Makina ambiri oika magetsi pogwiritsa ntchito laser amagwiritsa ntchito ma linear motor drives, omwe amapanga maginito. Maziko a makina a ferromagnetic amatha kuyanjana ndi maginitowa, zomwe zimapangitsa kuti mphamvu zisokonezeke komanso zomwe zingayambitse kusintha kwa maginito pamene mbiri ya maginito ya zinthuzo ikusintha. Chikhalidwe cha Granite chosakhala ndi maginito komanso chosayendetsa magetsi chimachotsa kuyanjana kumeneku konse.
Machitidwe a Laser a Femtosecond: Zofunika Kwambiri pa Malo Oyenera Kuyang'aniridwa Mwanzeru
Ma laser a Femtosecond amapanga ma pulse afupi kuposa picosecond imodzi — biliyoni imodzi ya miliyoni imodzi ya sekondi. Pa nthawi imeneyi, kuyanjana kwa laser ndi zinthu kumakhala kosiyana kwambiri ndi kukonza laser wamba: zinthuzo zimachepetsedwa mwachangu kwambiri kotero kuti kutentha sikutha kufalikira kuzinthu zozungulira, zomwe zimathandiza kudula molondola ndi madera omwe amakhudzidwa ndi kutentha omwe amayesedwa mu nanometers osati ma millimeters.
Mphamvu imeneyi imagwiritsidwa ntchito mu opaleshoni ya corneal (LASIK), kukonza bwino zinthu zamagetsi pogwiritsa ntchito micromachine, kukonza zinthu zogwiritsira ntchito photonics, komanso kupanga kuwala kwa ultraviolet (EUV) kwa lithography ya m'badwo wotsatira. Mu ntchito iliyonse, malo a laser focus poyerekeza ndi workpiece ayenera kulamulidwa kuti azitsatira zomwe zimafanana ndi kukula kwa malo a laser - nthawi zambiri ma micrometer 1-10.
Dongosolo loyika malo la gawo la laser la femtosecond liyenera kukwaniritsa kulondola kwa 1–10 μm pamayendedwe omwe angafikire 300 mm kapena kuposerapo — liwiro losinthasintha la 1:30,000 kapena kuposerapo. Liyenera kuchita izi ndi kukhazikika kwa liwiro kokwanira kuti lipange kuya kofanana kwa mawonekedwe pa workpiece yonse. Ndipo liyenera kukwaniritsa izi mu phukusi laling'ono, logwirizana ndi chipinda choyera lomwe limagwirizana ndi makina operekera kuwala a laser.
Magawo a granite okhala ndi mpweya amathetsa zofunikira zonsezi. Mpweya wonyamula mpweya umapereka kuyenda kosalala, kopanda kukangana komwe kumafunika kuti liwiro likhale lofanana. Maziko a granite amapereka kusalala ndi kuuma komwe kumafunika kuti pakhale kulondola. Kukhazikika kwa kutentha kwa dongosolo lophatikizana kumasunga mawonekedwe a laser-to-workpiece pamene chipangizocho chikutentha ndikufika pamlingo woyenera.
Makina a Picosecond Laser mu Kupanga Zamagetsi
Ma laser a Picosecond amakhala pakati pa nanosecond (pulsed wamba) ndi femtosecond malinga ndi nthawi ya pulse ndi mawonekedwe ake. Amagwiritsidwa ntchito kwambiri popanga zamagetsi kuphatikiza PCB kudzera mukubowola, kujambula kwa laser kwa maselo a solar a thin-film, kudula magalasi ndi safiro pazinthu zamagetsi zamagetsi, komanso kulemba ndi kutsata zinthu zamagetsi.
Mu ntchito zamafakitale izi, mphamvu yogwiritsira ntchito mphamvu ndiyofunika kwambiri — njira yoikira zinthu iyenera kuyenda mwachangu pakati pa zinthu pamene ikusunga kulondola kofunikira kuti igunde zolinga pamalo oyenera. Kuphatikiza kwa liwiro lalikulu ndi kulondola kwakukulu ndi komwe magawo a granite okhala ndi mpweya amakonzedwera: ma bearing a mpweya amathandizira kuthamanga kwambiri popanda vuto la liwiro loyambitsidwa ndi kukangana, pomwe kuuma ndi kunyowa kwa granite kumalepheretsa ma resonance amakina omwe angachepetse kulondola pa liwiro lalikulu.
Ubwino wina m'malo opangira zamagetsi ndi kubwerezabwereza kwa makina onyamula mpweya pamayendedwe mabiliyoni ambiri. Makina obowola a PCB omwe amakonza matabwa zikwizikwi patsiku amasonkhanitsa kuchuluka kwa ma cycle ambiri pa nthawi yonse yogwira ntchito. Khalidwe la ma air bearing silikutha limatanthauza kuti kulondola kwa makinawo chaka chachisanu ndi chimodzimodzi ndi tsiku loyamba - chinthu chomwe sichingafanane ndi ma rolling element bearing, omwe amawonetsa kuwonongeka pang'onopang'ono komanso kulondola kotsika pakapita nthawi.
Mavuto ndi Mayankho Okhudzana ndi Kuphatikizana
Kuphatikiza gawo la granite lokhala ndi mpweya mu dongosolo lolondola la laser kumaphatikizapo zinthu zingapo zofunika kuziganizira pa uinjiniya kupitirira gawo lokha. Mpweya woyera, wouma pa mphamvu yolamulidwa umafunika - nthawi zambiri umasefedwa kuti ukhale woyera pa Gulu 0 ndipo mphamvu imayendetsedwa kufika pa ± 0.1% kapena kupitirira apo. Dongosolo loperekera mpweya siliyenera kuyambitsa kugwedezeka kapena kugwedezeka komwe kumafalikira mu gawolo. Kulamulira kutentha kwa mpweya kumaletsa zotsatira za kutentha pamene mpweya wopanikizika ukudutsa mu dongosololi.
Maziko a granite ayenera kukhazikitsidwa ndi kuthandizidwa mwanjira yoti asunge kusalala kwake pamene akulemedwa. Kuyika kinematic — pogwiritsa ntchito mfundo zitatu zothandizira zomwe zakonzedwa kuti zisapatuke kwambiri — ndi njira yodziwika bwino. Mapangidwe othandizira okha ayenera kukhala olimba pa kutentha komanso kugwedezeka kuchokera pansi pa nyumbayo.
Kuyang'anira ma chingwe a ma axel oyenda — kupititsa mawaya amphamvu, ma encoder signals, ma pneumatic lines, ndi ma vacuum lines kupita ku siteji yoyenda popanda kuyambitsa mphamvu zomwe zimasokoneza malo a siteji — kumafuna kapangidwe kabwino. Ma mota amakono owongolera mwachindunji amachotsa ma gearbox ndi ma drive screws, zomwe zimachepetsanso kusokonezeka kwa mphamvu komwe sikungabwerezedwe komwe kumawononga kulondola kwa malo.
Mapeto
Magawo a granite okhala ndi mpweya akuyimira nzeru ya kapangidwe: sankhani yankho labwino kwambiri lomwe likupezeka pakufunika kulikonse kwa uinjiniya, ngakhale yankholo litachokera mbali yosayembekezereka. Ma bereki a mpweya amathetsa kukangana ndi kuwonongeka pa sikelo ya nanometer m'njira zomwe ma bereki amakina sangachitire. Granite imathetsa kukhazikika kwa mawonekedwe, kugwedezeka kwa kugwedezeka, komanso khalidwe la pamwamba m'njira zomwe zitsulo sizingathe kuchita - makamaka popanda mtengo wokwera kwambiri komanso zovuta.
Kuphatikiza kumeneku kwakhala kukuchitika kwa zaka zambiri m'machitidwe ovuta kwambiri padziko lonse lapansi a laser. Pamene ukadaulo wa laser ukupitilira kupita patsogolo — ku ma pulses afupiafupi, kukula kwa malo ochepa, komanso kulekerera kwa njira zolimba — magawo a granite othandizira machitidwe amenewo adzafunika kupita patsogolo limodzi nawo. Opanga omwe angathe kupereka kulondola kofunikira, kotsimikizika komanso kotsimikizika, adzakhalabe ogwirizana nawo pakukula kwa ukadaulo wa laser.
Nthawi yotumizira: Juni-30-2026