Plate yolondola ya granite pamwamba ndi imodzi mwa zida zofunika kwambiri pa metrology yamafakitale. Imagwira ntchito ngati reference datum - mawonekedwe enieni a flat plane - omwe muyeso wina uliwonse mu workshop umayerekezeredwa. Ngati plate yolondola si yolondola, muyeso uliwonse wogwiritsidwa ntchito upititsa patsogolo kulakwitsa kumeneko, ndikuipitsa mwakachetechete deta yowunikira ndi zisankho zopangira.
Pa ntchito zambiri zamafakitale, kukwaniritsa kusalala mpaka mkati mwa ma micrometer ochepa kudutsa mbale yayikulu n'kovomerezeka. Koma pamlingo wapamwamba - mu calibration ya zida za semiconductor, ma laboratories a miyezo ya dziko, ma photolithography reference systems, ndi ultra-high-high-accuracy CMM qualification - kusalala kuyenera kutsimikiziridwa pamlingo wa nanometer. Funso kenako limakhala: kodi mumayesa bwanji chinthu ku muyezo wolondola kwambiri kuposa zida zomwe zimapezeka kuti muyese?
Nkhaniyi ikufotokoza mfundo, njira, ndi zida zomwe zimagwiritsidwa ntchito kutsimikizira ndikukwaniritsa kusalala kwa pamwamba pa mbale kuyambira pa mulingo wa micrometer mpaka nanometers.
Chifukwa Chake Kukhala Wokongola N'kofunika Kwambiri Kuposa Momwe Mumaganizira
Kusalala kwa mbale pamwamba kumafotokozedwa malinga ndi zolakwika zazikulu zovomerezeka (MPE) kudutsa malo ogwirira ntchito, zomwe nthawi zambiri zimafotokozedwa mu ma micrometer (μm). Giredi AA (giredi yabwino kwambiri yamalonda pansi pa miyezo yambiri yapadziko lonse lapansi) nthawi zambiri imafuna kusalala mkati mwa 1.6 μm pa mbale ya 1000 × 630 mm pansi pa muyezo wa German DIN 876, kapena mkati mwa zolekerera zinazake pansi pa muyezo wa American ASME B89.3.7.
Koma nkhani yake ndi yofunika kwambiri. Mbale ya pamwamba "yathyathyathya" yomwe imayesa kupotoka kwa 3 μm kuyambira kumapeto mpaka kumapeto ndi yokwanira bwino poyang'anira malo ochitira msonkhano. Mbale ya pamwamba yomwe imagwiritsidwa ntchito ngati datum yofotokozera poyesa gawo la photolithography lomwe likufuna kulondola kwa malo a 10-nanometer siloyenera konse - cholakwika chake cha flatness chokha ndi chachikulu nthawi 300 kuposa kulolera malo komwe kumayenera kuthandizira.
Kusiyana kumeneku pakati pa "kwabwino mokwanira pa ntchito zambiri" ndi "kwabwino mokwanira pa ntchito zovuta kwambiri" ndi chifukwa chake njira yoyezera ndi yofunika, komanso chifukwa chake opanga ma plate onse omwe ali ndi luso - kapena kuwona mtima - lofotokozera zinthu zawo molondola pamlingo wa nanometer.
Vuto Lofunika Kwambiri: Kuyeza Zimene Simungathe Kuziyerekeza Mwachindunji
Kuyeza kulondola kwa kusalala mpaka ku micrometer n'kosavuta: ikani mbaleyo pa chizindikiro chodziwika bwino, fufuzani pamwamba mwadongosolo, ndikulemba zolakwika. Koma kuyeza kulondola kwa kusalala mpaka ku nanometer kumabweretsa vuto lalikulu - palibe malo enieni olondola okwanira kukhala muyezo woyerekeza.
Pa sikelo ya nanometer, malo aliwonse — kuphatikizapo malo ofotokozera — ali ndi cholakwika chake. Mphamvu yokoka imasokoneza malo akuluakulu moyezera. Kusintha kwa kutentha kumayambitsa kufalikira kwa kutentha pa mbale. Ngakhale mafunde a mpweya ndi phokoso la mawu zimatha kuyambitsa zotsatira zomwe zimadziwika. Muyeso wokha uyenera kuwerengera zonsezi.
Asayansi a Metrology apanga njira zingapo zothetsera vutoli, zomwe zambiri zimaphatikizapo kusiyanitsa cholakwika cha chipangizocho ndi cholakwika cha chinthucho pogwiritsa ntchito miyeso yowonjezereka yomwe imatengedwa m'njira zosiyanasiyana kapena m'malo osiyanasiyana.
Njira Zofunikira Zoyezera ndi Zida
Masensa amagetsi ndi ma level ndi ena mwa zida zothandiza kwambiri pofotokozerambale ya pamwambakusalala m'malo akuluakulu. Zipangizo monga WYLER Leveltronic series (Switzerland) zimapeza ma resolution a angular a 0.001 mm/m kapena kupitirira apo — zofanana ndi kuzindikira kusiyana kwa kutalika kwa 1 micrometer pa mita imodzi. Mwa kudutsa pamwamba mwadongosolo mu gridi (njira ya Union Jack, cross pattern, kapena full grid), katswiri wa metroologist waluso amatha kupanga mapu athunthu a pamwamba.
Laser interferometry imapereka kusintha kwa masitepe pakuyeza kuti ikhale yosalala pamlingo wa sub-micrometer ndi nanometer. Chida monga Renishaw XL-80 laser interferometer chimatha kuyeza kusamuka mpaka kufika pamlingo wa nanometer imodzi pamwamba pa mtunda wa mamita angapo. Poyezera pamwamba pa mbale, kuwala kwa laser kumalunjika pa mbale pomwe galasi lowoneka bwino kapena lowunikira limatsata njira yolamulidwa; kupatuka mu kuwala komwe kumawonetsedwa kumavumbula mawonekedwe a pamwamba.
Kuyeza kusalala kwa interferometric pogwiritsa ntchito ma flat optical — magalasi opukutidwa bwino kapena ma silika osakanikirana okhala ndi zolakwika zosakwana 30 nanometers — kumatha kuzindikira kulondola kwa ma plates pamwamba pa malo a ma milimita mazana angapo nthawi imodzi. Ma interferometers otseguka omwe amagwiritsidwa ntchito m'mabungwe a dziko lonse lapansi amatha kuyeza madera a mainchesi 600 mm muyeso umodzi.
Masensa othamangitsira mphamvu zamagetsi ndi ma probe okhala ndi mpweya amapereka njira ina, yokhala ndi nanometer-level resolution komanso kuthekera kojambula pamwamba popanda kukhudza. Izi nthawi zambiri zimagwiritsidwa ntchito limodzi ndi granite yolondola kapena magawo owunikira a ceramic - omwe amagwira ntchito ngati mayendedwe - kupanga njira yoyezera yokha.
Njira ya Mapepala Atatu: Kudziwerengera Wekha
Njira imodzi yamphamvu kwambiri yopezera ndi kutsimikizira kusalala popanda kutchulidwa bwino ndi njira ya mbale zitatu. Mu njira iyi, mbale zitatu zimalumikizana motsatizana motsatizana komanso kufananiza. Masamu a ndondomekoyi amatsimikizira kuti cholakwika chilichonse chokhazikika mu mbale imodzi chimawululidwa kudzera mu kuyanjana kwake ndi ziwiri zina - mbale zonse pamodzi zimafotokoza malo athyathyathya m'malo mwa malo ena aliwonse akunja.
Njira ya mbale zitatu ndiyo maziko akale a kupanga mbale zapamwamba molondola kwambiri ndipo ikadali yofunikira mpaka pano. Kugwiritsa ntchito kwake kwamakono kumaphatikiza luso lachikhalidwe lolumikizana ndi manja ndi muyeso wamagetsi kuti kutsogolere njira yowongolera - amisiri aluso omwe amatha "kuwerenga" pamwamba poganizira momwe zinthu zilili, kuphatikiza ndi milingo yamagetsi yomwe imawerengera zomwe manja amazindikira.
Zotsatira zake zimakhala njira yogwirizana: nthawi iliyonse yolumikizirana, kuyeza, ndi kuchotsa zinthu zosiyanasiyana zimapangitsa kuti mbale zonse zitatuzi zikhale zosalala bwino. Cholepheretsa si njira koma kuleza mtima, luso, ndi zida zoyezera zomwe anthu omwe akugwira ntchitoyo ali nazo.
Udindo wa Malo Oyezera
Pa mulingo wa nanometer, malo oyezera amakhala gawo la dongosolo loyezera. Kutentha kuyenera kulamulidwa osati pamtengo wodziwika bwino komanso ku bande lolimba - nthawi zambiri ± 0.5°C kapena kupitirira apo - chifukwa kufalikira kwa kutentha kwa mbale ya granite ya mita imodzi kudutsa 0.1°C yokha ndi ma nanometer mazana angapo. Chinyezi chimakhudza pamwamba pa granite palokha komanso kusinthasintha kwa mpweya komwe kuwala kwa laser interferometry kumadutsa. Kugwedezeka kuchokera ku kapangidwe ka nyumba, HVAC, kapena makina apafupi kumabweretsa zolakwika za malo zomwe zimawononga miyeso yosalala.
Ichi ndichifukwa chake ma laboratories odziwa bwino za metrology - komanso opanga granite olondola kwambiri - amaika ndalama zambiri m'malo olamulidwa. Chipinda chokonzedwa bwino cholamulidwa ndi kutentha ndi chinyezi chokhala ndi pansi yodzipatula, ngalande zoletsa kugwedezeka kuzungulira m'mphepete mwake, ndi ma cranes opanda phokoso pamwamba si chinthu chapamwamba - ndi chofunikira chaukadaulo kuti mupeze ndikutsimikizira magiredi apamwamba kwambiri.
Ma ngalande oletsa kugwedezeka (nthawi zambiri amakhala 500 mm m'lifupi ndi 2000 mm kuya mozungulira chipinda choyezera) amachotsa pansi poyezera kuchokera ku kugwedezeka kwa nyumba. Pansi yopangidwa ndi konkriti wamphamvu kwambiri mpaka makulidwe a 1000 mm kapena kuposerapo imapereka kulemera ndi kuuma kofunikira kuti tipewe kusokonezeka kwamphamvu. Ndalama zomwe zayikidwa mu zomangamangazi zimatsimikizira mwachindunji kuchuluka kwa kusalala komwe wopanga angakwanitse ndikutsimikizira.
Kutsata Kulondola: Unyolo wa Chidaliro
Kuyeza kwa flatness kumakhala kodalirika monga momwe zida zomwe zimagwiritsidwa ntchito popanga - ndipo zida zimenezo zimakhala zodalirika pokhapokha ngati kuwerengera kwawo kungatsatidwe ku miyezo ya dziko ndi yapadziko lonse. Mu metrology yolondola, unyolo uwu wa kutsata si wosankha: ndi maziko a kudalirika kwa muyeso.
Tanthauzo la Système international d'unités (SI) la mita tsopano likupezeka kudzera mu liwiro la kuwala ndi miyezo ya ma frequency a laser yomwe imasungidwa ndi mabungwe a dziko lonse a metrology (NMIs) — monga NIST ku United States, PTB ku Germany, NPL ku United Kingdom, ndi NIM ku China. Zikalata zoyezera zomwe zimaperekedwa ndi mabungwe a boma kapena dziko lonse a metrology zimapereka umboni wolembedwa kuti chida china chake chayerekezeredwa motsutsana ndi miyezo yapamwamba yomwe ingatsatidwe ku zomwe zachitika poyamba.
Kwa wopanga granite wolondola, kukhala ndi zida zonse zoyezera zomwe zayesedwa ndi mabungwe ovomerezeka a metrology - okhala ndi satifiketi zotsatiridwa motsatira muyezo wadziko lonse - kumatanthauza kuti kuchuluka kwa kusalala komwe kwanenedwa pa zinthu zawo si manambala okhazikika koma miyeso yotsatiridwa ya SI yokhala ndi kusatsimikizika koyezedwa.
Kutsiliza: Kuyeza Sikungotsimikizira — Ndi Kupanga
Kuyeza kusalala kwa mbale pamwamba pa pulasitiki kufika pa kulondola kwa nanometer si kungoyang'ana komaliza khalidwe. Ndi gawo lofunika kwambiri pakupanga, kutsogolera gawo lililonse lokonza panthawi yolumikiza ndikupereka ndemanga zomwe zimayendetsa pamwamba pa pulasitikiyo ku mfundo yofunikira. Popanda luso loyeza molondola, palibe kuthekera kopanga molondola.
Mphamvu yopezera ndi kutsimikizira modalirika kusalala kwa nanometer m'ma granite pamwamba pa mbale ikuyimira malire enieni a mphamvu - omwe amalekanitsa ochepa opanga zinthu zolondola kwambiri padziko lonse lapansi ndi ambiri. Zimafunika zipangizo zoyenera, zida zoyenera, malo oyenera, zida zoyenera, zokonzedwa kuti zitsatidwe, zoyendetsedwa ndi anthu omwe ali ndi maphunziro komanso chidziwitso kuti azigwiritsa ntchito moyenera.
Kwa ogwiritsa ntchito ma plate olondola pamwamba — kaya m'ma lab a miyezo ya dziko, makampani a zida za semiconductor, kapena m'malo apamwamba a CMM — kumvetsetsa momwe ma plate awo amayezeredwera si nkhani yongoganizira chabe. Kumatsimikiza mwachindunji ngati miyeso yopangidwa pa ma plate amenewo ingakhale yodalirika.
Nthawi yotumizira: Juni-30-2026