Hauv kev tsim khoom siv precision, kev sib dhos aerospace, thiab cov cuab yeej thiab pwm siab heev thoob plaws Tebchaws Europe thiab North America, muaj qhov tseeb ntsiag to tab sis tseem ceeb uas cov kws ntsuas metrologists paub txog: txawm tias koj cov cuab yeej siab npaum li cas los xij, koj qhov kev ntsuas tsuas yog ntseeg tau raws li qhov chaw uas lawv tau hais txog. Thiab thaum nws los txog rau qhov tseeb, tsis muaj dab tsi - tsis yog hlau cam khwb cia, tsis yog hlau, tsis yog composite - phim qhov ruaj khov ntawm lub phaj granite tshuaj xyuas nto. Txawm hais tias nws lub luag haujlwm tseem ceeb, qhov khoom siv tseem ceeb no feem ntau raug kho raws li lub rooj ua haujlwm passive es tsis yog tus qauv metrology nquag nws yog tiag tiag.
Qhov tshwm sim ntawm qhov kev saib xyuas ntawd tuaj yeem tsis pom tseeb tab sis kim heev. Ib tug kws kho tshuab teeb tsa ib qho khoom siv nyuaj siv cov ntsuas qhov siab ntawm lub phaj uas puas lawm lossis tsis tau ntawv pov thawj. Ib tug kws tshuaj xyuas xyuas qhov tiaj tiaj ntawm qhov chaw sib khi nrog lub ntsuas qhia uas tau teeb tsa rau ntawm lub hauv paus uas nkhaus. Ib tug kws ua haujlwm zoo pom zoo rau ib pawg raws li cov ntaub ntawv CMM uas yeej tsis tau lees paub tawm tsam lub dav hlau paub. Hauv txhua qhov xwm txheej, cov cuab yeej yuav ua haujlwm zoo meej - tab sis lub hauv paus hauv qab lawv raug cuam tshuam. Yog vim li cas kev nkag siab txog cov peev xwm, kev txwv, thiab kev siv kom raug ntawm koj lub phaj granite tshuaj xyuas, tshwj xeeb tshaj yog thaum ua haujlwm nrog cov phaj granite loj, tsis yog tsuas yog kev coj ua zoo xwb - nws yog qhov tsim nyog rau kev tswj hwm qhov zoo uas taug qab tau, tiv thaiv tau.
Granite tau yog cov khoom siv uas tau xaiv rauqhov chaw siv precisiontxij li thaum nruab nrab xyoo pua 20th, thiab rau cov laj thawj tshawb fawb zoo. Nws cov qauv crystalline ntom ntom, zoo-grained muaj kev ruaj khov tshwj xeeb, qhov nthuav dav thermal tsawg kawg nkaus (feem ntau 6–8 µm / m · ° C), thiab kev co ntuj tsim damping - txhua yam tseem ceeb rau kev ntsuas rov ua dua. Tsis zoo li cov hlau phaj, uas corrode, khaws cia kev ntxhov siab, thiab nthuav dav pom tseeb nrog kev hloov pauv kub ambient, granite tseem ruaj khov dimensionally nyob rau hauv cov xwm txheej ib txwm muaj. Qhov no yog vim li cas cov qauv zoo li ASME B89.3.7 thiab ISO 8512-2 qhia txog granite - tsis yog qhov nyiam, tab sis ua qhov yuav tsum tau ua ntej - rau Qib 00 txog Qib 1 cov phaj nto siv hauv kev ntsuas thiab kev tshuaj xyuas.
Tiam sis qhov loj me ua rau muaj teeb meem tshiab. Ib qho lojgranite nto phaj—piv txwv li, 2000 x 1000 hli lossis loj dua—tsis yog tsuas yog ib qho scaled-up version ntawm lub rooj zaum plate. Nws qhov hnyav (feem ntau tshaj 800 kg) xav tau qhov kev txhawb nqa geometry kom meej kom tiv thaiv kev sagging. Thermal gradients thoob plaws nws qhov hnyav tuaj yeem tsim micro-curvatures yog tias tsis tau acclimated kom raug. Thiab vim tias flatness tolerances scale nrog qhov loj me (piv txwv li, ± 13 µm rau 2000 x 1000 hli Qib 0 phaj ib ISO 8512-2), txawm tias me me deviations ua tseem ceeb dhau qhov deb ntev. Qhov no yog qhov uas craftsmanship ntsib engineering: tiag tiag loj-hom granite phaj tsis yog tsuas yog txiav thiab polished-lawv yog relieved kev ntxhov siab rau lub hlis, tes-lapped tshaj lub lis piam, thiab validated siv laser interferometers lossis hluav taws xob theem ntawm pua pua ntawm cov ntsiab lus hla qhov chaw.
Qhov tseem ceeb ib yam li ntawd yog seb cov phaj no sib xyaw nrog cov cuab yeej ntsuas phaj nto li cas. Cov ntsuas qhov siab, cov ntsuas ntsuas qhov ntsuas, cov kab sine, cov duab plaub fab meej, cov thaiv ntsuas, thiab cov khoom sib piv pom tau txhua yam xav tias qhov chaw hauv qab yog lub dav hlau zoo meej. Yog tias nws tsis yog, txhua qhov kev nyeem ntawv yuav tau txais qhov yuam kev ntawd. Piv txwv li, thaum siv lub ntsuas qhov siab digital los ntsuas qhov siab ntawm lub cav, qhov poob 10-micron hauv lub phaj txhais ncaj qha mus rau hauv qhov yuam kev 10-micron hauv koj qhov ntsuas tau tshaj tawm - txawm tias lub ntsuas nws tus kheej tau calibrated zoo meej. Yog vim li cas cov chaw soj nstuam sab saum toj tsis yog tsuas yog muaj lub phaj granite xwb; lawv kho nws ua tus qauv kev ua neej, teem sijhawm rov kho dua tsis tu ncua, tswj kev raug ib puag ncig, thiab sau txhua qhov kev siv.
Ntawm ZHHIMG, peb tau pom thawj zaug tias kev hloov mus rau lub phaj granite soj ntsuam uas tau ntawv pov thawj hloov pauv cov txiaj ntsig zoo li cas. Ib tus neeg ua pwm European tau hloov lawv lub rooj hlau qub nrog lub phaj granite 1500 x 1000 mm Qib 0 thiab pom qhov sib txawv ntawm kev ntsuas ntawm tus neeg ua haujlwm poob qis 40%. Lawv cov cuab yeej tsis tau hloov pauv - tab sis lawv qhov kev siv tau hloov pauv. Lwm tus neeg siv khoom hauv kev lag luam khoom siv kho mob tau dhau qhov kev tshuaj xyuas FDA nruj heev tsuas yog tom qab muab daim ntawv pov thawj calibration tag nrho rau lawv lub phaj granite loj, ua pov thawj tias taug qab tau raws li cov qauv hauv tebchaws. Cov no tsis yog kev yeej cais tawm; lawv yog cov txiaj ntsig kwv yees tau thaum koj khi koj qhov kev ntsuas hauv qhov tseeb ntawm lub cev.
Nws tseem tsim nyog tshem tawm ib qho kev ntseeg cuav uas neeg feem ntau ntseeg: hais tias granite yooj yim tawg. Txawm hais tias nws tuaj yeem tawg yog tias raug hlau tawv tawv ntaus, nws ruaj khov heev thaum siv ib txwm. Nws tsis xeb, tsis tas yuav roj, thiab yuav tsis ntswj los ntawm qhov av noo lossis qhov kub thiab txias nruab nrab. Nrog kev saib xyuas yooj yim - ntxuav tsis tu ncua nrog isopropyl cawv, zam kev cuam tshuam ncaj qha, thiab kev txhawb nqa kom zoo - qhov zoophaj granitetuaj yeem kav ntev li 30 xyoo lossis ntau dua. Ntau lub phaj uas tau teeb tsa rau xyoo 1970 tseem siv tau txhua hnub niaj hnub no, lawv qhov tiaj tiaj tsis hloov pauv.
Thaum xaiv lub phaj granite tshuaj xyuas nto, saib dhau qhov zoo nkauj. Xyuas kom meej qib (Qib 00 rau cov chaw kuaj ntsuas, Qib 0 rau kev tshuaj xyuas siab), paub tseeb tias daim ntawv pov thawj suav nrog daim ntawv qhia tiaj tiaj (tsis yog tsuas yog daim ntawv hla / tsis dhau), thiab xyuas kom meej tias tus neeg muab khoom muab cov lus qhia txog kev teeb tsa, kev tuav, thiab kev rov kho dua. Rau kev teeb tsa phaj granite loj, nug txog kev sawv ntsug nrog cov taw hloov kho tau thiab kev cais kev co - qhov tseem ceeb rau kev tswj hwm qhov tseeb hauv cov chaw tsim khoom.
Thiab nco ntsoov: koj cov cuab yeej ntsuas phaj nto tsuas yog ncaj ncees raws li qhov chaw uas lawv zaum. Lub rooj ntsuas qhov siab 10,000 tsis yog qhov tseeb dua li 100 ib qho ntawm lub phaj granite uas tau ntawv pov thawj. Kev meej tsis yog hais txog lub cuab yeej kim tshaj plaws - nws yog hais txog qhov siv tau zoo tshaj plaws.
Ntawm ZHHIMG, peb koom tes nrog cov kws tshaj lij uas sib xyaw cov txheej txheem lapping nrog kev lees paub niaj hnub no. Txhua lub phaj peb muab yog kuaj ib tus zuj zus, serialized, thiab nrog daim ntawv pov thawj NIST-traceable tag nrho. Peb tsis ntseeg hauv "ze txaus." Hauv metrology, tsis muaj yam zoo li no.
Yog li ntawd, nug koj tus kheej: thaum koj qhov tseem ceeb tshaj plaws dhau qhov kev tshuaj xyuas zaum kawg, koj puas ntseeg tus lej - lossis nug qhov chaw hauv qab nws? Cov lus teb tuaj yeem txiav txim siab seb koj qhov kev tshuaj xyuas tom ntej puas yog kev vam meej lossis kev poob qis. Vim tias nyob hauv lub ntiaj teb ntawm kev ua kom raug, kev ncaj ncees pib los ntawm hauv av mus rau saum toj. Thiab ntawm ZHHIMG, peb cog lus tias yuav ua kom ntseeg tau tias hauv av ruaj khov, ruaj khov, thiab muaj kev tshawb fawb zoo.
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-09-2025