I. Electronic Level Method: Quick On -Site Assessment (Suitable for Medium to Large Platforms)
Haum rau kev tshuaj xyuas txhua hnub thiab kev kuaj xyuas peb lub hlis twg. Kev ua haujlwm yooj yim, tus nqi qis, thiab qhov tseeb txog ± 0.005mm / m.
1. Kev Ntsuas Txoj Cai: Ntsuas lub kaum sab xis ntawm txoj haujlwm sib txawv uas siv qib. Xam cov txheeb ze qhov siab sib txawv ntawm cov ntsiab lus siv cov ntaub ntawv, thiab tom qab ntawd xam qhov kev ua yuam kev flatness (ntau txoj kev).
2. Cov txheej txheem ua haujlwm:
Ntxuav lub rooj saum npoo, tshem cov roj, vuam slag, thiab lwm yam khib nyiab.
Npaj cov ntsiab lus ntawm qhov sib npaug ntawm qhov "米" (nqaij) zoo li txoj kev (ob kab pheeb ces kaum + plaub sab midlines) (pitch pom zoo 200 ~ 500mm).
Muab cov qib ntawm txhua qhov taw qhia thiab sau cov ntawv nyeem (chav tsev: faib) tom qab npuas stabilizes.
Hloov cov naj npawb ntawm kev faib mus rau qhov siab sib txawv (xws li, rhiab heev 0.02mm / m, suab L=0.3m, ces txhua qhov sib faib sib npaug rau 0.006mm).
Xam qhov sib txawv ntawm qhov siab tshaj plaws thiab qhov tsawg kawg nkaus ntawm tag nrho cov ntsiab lus; qhov no yog qhov flatness yuam kev.
3. Kev Txiav Txim Tsis Txaus Siab
Yog tias ntsuas tus nqi> 0.10mm / 1000mm (qib precision), nws raug txiav txim raws li qhov tsis sib xws; Ib qho - lub caij hloov pauv > 0.02mm / 1000mm qhia tias muaj kev ntxhov siab sab hauv, yuav tsum tau ceeb toom.
✅ Nws raug pom zoo kom siv cov qib hluav taws xob digital, uas txhawb nqa cov ntaub ntawv tsis siv neeg kaw thiab kev tsom xam, kev txhim kho kev ua haujlwm.
II. Coordinate Measuring Instrument Method: Siab -Kev kuaj xyuas qhov tseeb (tsim nyog rau kev lees paub thiab pov thawj)
Tsim nyog rau cov xwm txheej uas yuav tsum tau muaj siab precision, xws li cov neeg hlau vuam thiab cov qauv ntsuas kev pom zoo ua ntej ntau lawm.
1. Txoj Cai Kev Ntsuas
Lub kaw lus sau cov kev sib koom ua ke ntawm ntau lub ntsiab lus ntawm lub rooj los ntawm kev txav lub stylus raws X, Y, thiab Z axes. Lub software haum rau lub dav hlau zoo tagnrho (tsawg square txoj kev) thiab xam qhov siab tshaj plaws sib txawv ntawm qhov tseeb saum npoo thiab lub dav hlau zoo tagnrho.
2. Cov ntsiab lus ua haujlwm
Calibrate qhov sojntsuam ua ntej ntsuas kom paub meej qhov system raug; Faib yam tsawg kawg yog 50 qhov ntsuas qhov sib npaug ntawm lub rooj (kab phiaj txoj kev); Tsis txhob cuam tshuam los ntawm ib puag ncig kev co thiab kub hloov pauv; Siv cov software tshaj lij (xws li PC-DMIS) rau kev ua cov ntaub ntawv.
3. Kev Txiav Txim Tsis Txaus Siab
Flatness=Maximum Positive Deviation - Maximum Negative Deviation; Ib qho kev sib txawv ntawm lub Hoobkas qauv (piv txwv li, qib precision> 0.10mm / 1000mm) yog suav tias yog txawv txav; Daim ntawv qhia 3D topographic tuaj yeem tsim tau, pom qhov muag pom qhov pom, qhov sib txawv, lossis qhov txawv txav.
📌 Qhov zoo: Precisely nrhiav txoj haujlwm deformation, muab cov ntaub ntawv txhawb kev kho tom ntej.
III. Laser Interferometer Method: Ultra-siab precision tsis yog{2}} kev tshuaj xyuas (tsim rau siab -precision platform txais)
Haum rau siab -precision platforms nrog flatness yuav tsum tsawg dua los yog sib npaug rau 0.05mm / 1000mm, xws li aerospace thiab precision pwm sib dhos worktables.
1. Txoj Cai Kev Ntsuas
Siv qhov chaw ua haujlwm ntawm qhov chaw kho qhov muag raws li qhov kev siv zoo tshaj plaws, lub teeb laser illuminates qhov ntsuas qhov chaw, tsim kev cuam tshuam fringes. Lub curvature ntawm cov fringes qhia qhov flatness yuam kev; txhua qhov kaw fringe sawv cev qhov siab sib txawv ntawm λ/2 (kwv yees li 0.3μm hauv qab lub teeb dawb).
2. Cov txheej txheem ua haujlwm
Maj mam muab qhov chaw kho qhov muag rau ntawm lub rooj ntxuav;
Tig rau ntawm lub laser interferometer thiab kho qhov kho qhov muag txoj kev sib dhos;
Saib xyuas cov duab cuam tshuam thiab txheeb xyuas cov duab thiab tus naj npawb ntawm fringes;
Yog hais tias cov fringes yog nkhaus mus rau hauv kaw loops, qhov flatness yuam kev=tus naj npawb ntawm interference fringes × λ/2.
3. Kev Txiav Txim Tsis Zoo
Yog hais tias cov kev cuam tshuam fringes yog pom tseeb nkhaus los yog kaw, nws qhia tau hais tias lub zos convexity / concavity;
Yog hais tias cov fringes txav ntawm qhov chaw mus rau ntug → qhov chaw yog convex; txwv tsis pub, nws yog concave;
Qhov yuam kev tus nqi siab tshaj 0.05mm / 1000mm yog txiav txim siab tsis kam lees.
⚠️ Ceeb Toom: Tsuas yog siv tau rau qhov chaw tiaj tus me me (feem ntau<500mm). Large-area inspections need to be performed in segments.
