Hauv kev tsim cov cuab yeej kho qhov muag, qhov tseeb ntawm lo ntsiab muag ncaj qha txiav txim siab qhov zoo ntawm cov duab. Los ntawm astronomical telescopes mus rau microscopic instruments, los ntawm high-end koob yees duab mus rau precision photolithography tshuab, qhov zoo tshaj plaws kev ua tau zoo ntawm txhua yam khoom siv kho qhov muag cia siab rau kev txhawb nqa ntawm high-precision lo ntsiab muag. Granite precision cov cuab yeej, nrog nws cov yam ntxwv tsis sib xws, tau dhau los ua tus yuam sij rau kev tsim cov khoom siv siab precision sib tsoo platform, tsav kev tsim cov cuab yeej kho qhov muag mus rau qib tshiab ntawm precision.
Lub ntuj zoo ntawm granite precision khoom
Granite tau tsim los ntawm cov txheej txheem geological ntau pua lab xyoo thiab muaj cov khoom tshwj xeeb ntawm lub cev, ua rau nws yog ib qho khoom siv zoo tshaj plaws rau kev tsim cov iav qhov sib tsoo siab. Ua ntej, cov coefficient ntawm thermal expansion ntawm granite yog tsawg heev, feem ntau yog li ntawm 5 txog 7 × 10⁻⁶ / ℃, thiab nws yuav luag tsis cuam tshuam los ntawm kev hloov pauv hauv ib puag ncig kub. Thaum lub sij hawm lub lens sib tsoo txheej txheem, lub tshav kub generated los ntawm cov cuab yeej ua hauj lwm los yog cov kev hloov nyob rau hauv ib puag ncig kub yuav tsis ua rau ib tug tseem ceeb deformation ntawm granite sib tsoo platform, yog li xyuas kom meej tias qhov tseeb qhov tseeb ntawm lub lo ntsiab muag tseem nyob ruaj khov nyob rau hauv lub sib tsoo txheej txheem thiab zam lub curvature deviation ntawm lub lo ntsiab muag los ntawm thermal expansion thiab contraction.
Thib ob, granite muaj kev vibration damping zoo heev. Optical lens sib tsoo yuav tsum muaj qhov chaw ua haujlwm ruaj khov heev. Txawm tias me ntsis kev vibration tuaj yeem ua rau muaj qhov tsis xws luag ntawm lub lens nto. Granite tuaj yeem nqus tau sab nraud kev co lub zog, txo kev co cuam tshuam thaum lub sij hawm sib tsoo, txo qhov kev vibration amplitude los ntawm 60% mus rau 80%, xyuas kom meej meej qhov chaw ntawm cov cuab yeej sib tsoo thiab lub lens, thiab pab ua tiav ultra-siab smoothness ntawm lub lens nto.
Tsis tas li ntawd, granite muaj hardness siab thiab muaj zog hnav tsis kam, nrog rau Mohs hardness ntawm 6 mus rau 7. Nyob rau hauv lub sij hawm ntev thiab high-frequency lens sib tsoo cov hauj lwm, granite sib tsoo platforms tsis nquag hnav thiab tsim kua muag, muaj peev xwm yeej ib txwm muaj kev ruaj khov precision, ntev kev pab cuam lub neej ntawm cov cuab yeej, thiab txo nqi txij nkawm.
Precision ua technology ntawm granite sib tsoo platforms
Txhawm rau kom ua tiav cov txiaj ntsig kev ua tau zoo ntawm granite, lub siab-precision lens sib tsoo platform txais cov txheej txheem thev naus laus zis thaum lub sijhawm tsim khoom. Los ntawm cov lej tswj hwm ultra-precision sib tsoo thiab polishing thev naus laus zis, qhov chaw tiaj tus ntawm granite platform tuaj yeem tswj tsis pub dhau ± 0.002mm / m, thiab qhov roughness tuaj yeem ncav cuag qib nanometer. Qhov no high-precision nto zoo muab qhov tseeb siv nto rau lens sib tsoo, kom ntseeg tau tias cov cuab yeej sib tsoo tuaj yeem ua cov lo ntsiab muag sib npaug thiab ruaj khov.
Lub caij no, hauv kev tsim thiab tsim cov txheej txheem ntawm granite sib tsoo platform, cov neeg kho tshuab cov qauv thiab cov lus tsa suab tau ua ke. Piv txwv li, los ntawm kev sib koom ua ke siab-precision air-floating qhia rails thiab servo lub cev muaj zog tsav tshuab, cov cuab yeej sib tsoo tuaj yeem ua tiav kev txav mus los ntawm lub platform, nrog rau kev txav chaw qhov tseeb ntawm ± 0.005mm. Qhov no high-precision suab tswj, ua ke nrog kev ruaj ntseg ntawm granite platform, tuaj yeem ua tau raws li kev sib tsoo cov kev xav tau ntawm txoj kev nkhaus nkhaus rau ntau hom lo ntsiab muag. Seb nws yog concave lo ntsiab muag, convex lo ntsiab muag, los yog aspheric lo ntsiab muag, high-precision ua tiav.
Kev lag luam tus nqi ntawm granite precision khoom
Post lub sij hawm: May-07-2025