Nyob rau hauv siab -precision manufacturing, kho qhov muag los ua ke, thiab lub chaw soj nstuam tswj kom zoo, precision granite nto phaj ua hauj lwm raws li lub hauv paus siv dav hlau rau dimensional metrology. Qhov tseeb ntawm qhov ntsuas qhov siab, qib hluav taws xob, square rulers, thiab kev sib koom tes ntsuas tshuab (CMMs) nyob ncaj qha rau ntawm tus qauv flatness ntawm lub hauv paus granite txaj.
Txawm li cas los xij, cov kws tsim kho tshuab tsim qauv, tus thawj tswj hwm kev lees paub zoo, thiab pab pawg muag khoom thoob ntiaj teb feem ntau ntsib kev tsis sib haum xeeb thaum sib piv cov specifications flatness los ntawm cov neeg muag khoom thoob ntiaj teb. Cov qauv sib txawv hauv cheeb tsam-xws li European DIN 876, American ASME B89.3.7-2013, thiab Japanese JIS B7513-siv cov qauv kev suav sib txawv, qib siab ntev, thiab cov txheej txheem ntsuas.
Cov lus qhia dav dav no qhia meej txog qhov sib txawv tseem ceeb ntawm cov qauv thoob ntiaj teb granite flatness, qhia cov ntsiab lus ib puag ncig cuam tshuam rau kev nyeem ntawv raug, thiab piav qhia yuav ua li cas sub-micron precision raug txheeb xyuas nyob rau hauv niaj hnub metrology ib puag ncig.
Kev tawg ntawm Ntiaj Teb Flatness Standards thiab Tolerance Qib
Flatness kam rau ua txhais tag nrho qhov kev tso cai nyob deb ntawm ob lub dav hlau sib luag uas nyob rau hauv uas tag nrho saum npoo ntawm granite phaj yuav tsum dag.
1. European Standard: DIN 876 (Lub teb chaws Yelemees / International ISO Reference)
DIN 876 tau lees paub dav thoob plaws Tebchaws Europe thiab Asia rau siab - lub tshuab ua haujlwm zoo. Tolerances yog txiav txim los ntawm ib tug linear mis raws li nyob rau hauv lub nto phaj diagonal length (L) nyob rau hauv millimeters.
Qib 000 (Lab Qib / Ultra-Qhov Precision): Cov qauv kam rau ua: t=1 + (L / 1000) um Tsim los rau cov qauv ntsuas ntsuas thawj zaug, ntsuas ntsuas ntsuas ntsuas ntsuas, thiab nanometer- qib ntsuas qhov muag.
Qib 00 (High Precision Laboratory): Tolerance formula: t=2 + (L / 500) um Tsim los rau cov chav sib dhos precision, cov khoom siv semiconductor kuaj, thiab siab - qhov tseeb CMM hauv paus.
Qib 0 (Kev Tshawb Fawb Qib): Cov qauv kam rau ua: t=4 + (L / 250) um Tsim los rau kev tswj xyuas kev ua haujlwm zoo thiab kho qhov muag sib piv mounting.
Qib 1 (Tebchaws Chaw Ua Haujlwm): Cov qauv kam rau ua: t=10 + (L / 100) um Tsim los rau cov chaw ua haujlwm ntxhib thiab kev ua haujlwm hauv khw muag khoom.
2. American Standard: ASME B89.3.7-2013 (United States)
ASME tus qauv categorizes granite nto daim hlau rau hauv peb qib kev ua haujlwm, txhais tag nrho cov flatness tag nrho nrog rau rov nyeem dua.
Laboratory Qib (AA): Zuag qhia tag nrho flatness kam rau ua: (40 + D x D / 25) / 1000 ntiv tes, qhov twg D sawv cev rau kab pheeb ces kaum ntev hauv inches. Tsim los rau qhov kub thiab txias- tswj kev ntsuas ntsuas.
Kev soj ntsuam Qib (A): Zuag qhia tag nrho flatness kam rau ua: 2 x Laboratory Qib AA kam rau ua. Tsim los rau thaj chaw soj ntsuam dav dav.
Chav Kawm Qib (B): Zuag qhia tag nrho flatness kam rau ua: 4 x Laboratory Qib AA kam rau ua. Tsim los rau machining khw pem teb thiab ua ntej layout ua hauj lwm.
3. Japanese Standard: JIS B7513 (Nyiv)
JIS B7513 ua tib zoo nrog DIN cov qauv tab sis categorizes deg daim hlau rau hauv Qib 00, Qib 0, Qib 1, thiab Qib 2. Cov qauv lej rau Qib 00 yog qhia raws li: t=1.5 + (L / 500) um
Environmental Impacts ntawm Laser Interferometer Test
Ua kom tiav thiab txheeb xyuas cov sub-micron flatness kam rau ua yuav tsum tau ntau tshaj qhov siab tshaj - precision machining. Ib puag ncig metrology ib puag ncig ncaj qha dictates ntsuas validity. Thaum calibratinggranite nto phajsiv optical laser interferometers lossis hluav taws xob sib txawv theem (xws li WYLER lossis Renishaw laser systems), peb qhov tseem ceeb ntawm ib puag ncig yuav tsum tau tswj hwm:
Thermal Gradints (Tsub Variation) Ib ntsug thermal gradient me me li 0.5 degrees Celsius nruab nrab ntawm sab saum toj thiab hauv qab ntawm granite phaj ua rau thermal bowing. Vim tias granite muaj cov thermal conductivity tsawg, cov cua sov absorbed nyob rau saum npoo nthuav cov txheej saum toj kawg nkaus thaum lub hauv qab tseem txias, ua rau lub convex nto distortion. High-Kev ntsuas qhov tseeb yuav tsum tshwm sim hauv huab cua-cov chav tswj tau tuav ntawm 20 degrees Celsius (ntxiv lossis rho tawm 0.5 degrees Celsius).
Kev vibration hauv av thiab Micro-Seismic Interference Laser interferometers ua haujlwm ntawm qhov muag wavelengths. Ambient av vibration los ntawm lub Hoobkas forklifts, nyob ze CNC milling tshuab, los yog ko taw tsheb ua rau fringe qauv instability, skewing cov zauv nto reconstruction. Metrology los ua ke cov chaw yuav tsum tau siv cais cov hauv paus slabs (tiv thaiv - kev vibration trenches puv nrog dampening media) kom cais cov cheeb tsam sim ntawm khw-pem teb shockwaves.
Relative Humidity Stabilization Granite absorbs feeb ib kab ntawm cov dej noo nyob ntawm cov av noo. Kev hloov pauv sai ntawm cov av noo (zoo tagnrho khaws cia ntawm 40% thiab 60%) tuaj yeem ua rau micro- o ntawm qhov chaw sab saum toj, cuam tshuam ib ntus nanometer- qib flatness nyeem ntawv.
Tes-Lapping: Daim Duab thiab Kev Tshawb Fawb ntawm Sub-Micron Precision
Thaum loj CNC nto grinders nrog ultra- lub log sib tsoo nyuaj ua tiav cov txheej txheem saum npoo av, kev sib tsoo tshuab ib leeg tsis tuaj yeem ua tiav Qib 000 lossis kev cai sub-micron kam rau ua dhau qhov loj.
Qhov kev kho kom zoo zaum kawg yog nyob ntawm kev txhais tes tshwj xeeb -lapping ua los ntawm tus kws ntsuas ntsuas.
Lub Tes-Lapping txheej txheem: Siv cov nplua abrasive lapping compounds (calibrated pob zeb diamond slurries los yog silicon carbide hmoov) siv los ntawm kev cai lap blocks, cov kws paub txog kev siv tus kheej txo qhov siab qhov chaw pom los ntawm hluav taws xob qib kev kos duab.
Micro-Tactile Feedback: Tus kws tshaj lij lapping tuaj yeem hnov cov ntaub ntawv tshem tawm cov nqi qis rau ib tus neeg micrometers los ntawm kev kho lub cev lub zog, nrawm nrawm, thiab cov qauv txav. Qhov kev sib xyaw ua ke ntawm optical laser interferometer tawm tswv yim thiab kev txawj tactile coj saum npoo av mus rau nanometer-theem repeatability.
Summary Checklist for Buyers and Quality Engineers
Thaum nrhiav precision granite nto daim hlau lossis tshuab hauv paus rau cov haujlwm thoob ntiaj teb:
Qhia kom meej tus qauv: Ib txwm qhia meej seb puas kam rau xa mus rau DIN 876 Qib 00, ASME Qib AA, lossis kev cai nanometer specifications hauv koj cov duab kos duab.
Kev thov Traceable Calibration Certificates: Xyuas kom tag nrho cov ntaub ntawv soj ntsuam yog tsim los ntawm kev siv cov cuab yeej (xws li Mahr dial indicators, Renishaw lasers, WYLER qib) txhawb nqa los ntawm ISO-cov ntawv pov thawj hauv teb chaws metrology institutes.
Verify Material Density: Ensure the material utilized is high-density natural black granite (density approximately 3100 kg/m3) rather than lower-grade commercial stone or porous marble.
Koom tes nrog UNPARALLELED Group rau Ultra-Precision Metrology Solutions
Ntawm UNPARALLELED Group, peb cov kev tsim khoom lag luam ua raws li cov qauv thoob ntiaj teb xws li DIN 876, ASME, JIS, thiab GB. Ua haujlwm nyob rau hauv 10,000 m2 huab cua- tswj thiab kev vibration- cais metrology rhiav, peb tes-lapping kws tshwj xeeb tsim granite nto phaj, cua bearing theem, thiab kev cai machinery Cheebtsam engineered kom tau raws li lub ntiaj teb no xav tau kev zam.
Xav tau kev cai nto phaj sizing los yog tshwj xeeb mounting insert qauv?
Xav tau DIN 876 Qib 00 lossis 000 daim ntawv pov thawj calibration tuaj yeem ua raws li cov qauv hauv tebchaws?
Hu rau peb Pab Pawg Metrology Application Engineering Hnub no los sab laj txog koj cov kev cai los yog thov cov lus hais.