Purati yepamusoro pegranite ndiyo hwaro husingapokanwi hwemetrology yehukuru hwayo—dombo rinoita seriri nyore rinoita senzvimbo yepamusoro yekuyera nemazvo. Zvisinei, mashandiro aro anotsanangurwa nepfungwa isina musoro: kushanda kwaro kuri muhunhu hwakakwana (kusatsetseka zvachose) uko, muchokwadi, kunongofungidzirwa chete. Kune nyanzvi dzekutonga mhando, mainjiniya, uye vashandi vemachina, kuvimbika kwenheyo iyi hakuchinjiki, zvichida kunzwisisa kwakadzama kwekushivirira kwayo, kugadzirisa, uye kubata kwayo.
Kunyatsojeka kweKusakwana: Kunzwisisa Kusatsetseka kwePlatifomu
Mubvunzo wakakosha wekuti, granite surface plate yakati sandara sei, haupindurwi nenhamba imwe chete, asi nenhamba yakatsanangurwa zvakanaka yekukanganisa kunobvumirwa, kunozivikanwa segiredhi rayo. Kusandara kunoyerwa seTotal Indicator Reading (TIR) mutsauko wenzvimbo yese yekushanda, kutsauka kunowanzo kuyerwa muzvikamu zvemamiriyoni zve inchi kana micrometer. Maplate emhando yepamusoro, ayo anotsanangurwa seGiredhi AA (Laboratory Grade) kana Giredhi 00, anowana mwero unoshamisa wekusandara. Kune plate yepakati (semuenzaniso, $24 \times 36$ inches), kutsauka kubva kune theoretical perfect plane kunogona kuganhurirwa ku $0.00005$ inches (50 millionths of an inch). Uku kushivirira kwakasimba kupfuura chero chikamu chakayerwa pairi. Sezvo magiredhi achidzika—Giredhi 0 kana A yekuongorora, Giredhi 1 kana B yeTool Room—kushivirira kunobvumidzwa kunowedzera, asi kunyange plate yeGiredhi 1 inoramba yakasandara kupfuura chero bhenji rebasa renguva dzose. Kureba kwayo kunowanikwa kuburikidza nenzira yakasarudzika, inodzokororwa inonzi lapping, uko mainjiniya vane hunyanzvi vanoshandisa mabrasives nema master plates madiki kuti vapfeke granite kusvika pakukwana kunodiwa. Maitiro aya anotora nguva yakawanda ndosaka plate yakasimbiswa ichikosha zvikuru. Zvisinei, hunhu hwechisikigo hunoita kuti granite ive yakanaka - kuwedzera kwayo kupisa kushoma, kudzikamisa kudengenyeka kwakanaka, uye kuramba ngura - zvinongochengetedza kurema kwayo; hazvidziviriri kuora kwayo zvishoma nezvishoma kuburikidza nekushandisa.
Kuchengetedza Kunyatsojeka: Granite Surface Plate Inofanira Kuongororwa Kangani?
Purati yepamusoro ipfungwa inorarama inorasikirwa nekururama kwayo nekufamba kwenguva nekuda kwekusakara kwakajairika, kuchinja-chinja kwekupisa, uye marara madiki ezvakatipoteredza. Nokudaro, mhinduro yekuti granite surface plate inofanira kuenzaniswa kangani inogara ichienderana nezvinhu zviviri zvakakosha: simba rayo rekushandiswa uye giredhi rayo. Mapurati anoshandiswa nguva dzose munzvimbo yekuongorora, kunyanya ayo anotsigira michina inorema kana zvikamu zvikuru (High-Usage kana Critical Plates, Grade AA/0), anofanirwa kuenzaniswa mwedzi mitanhatu yega yega. Iyi purogiramu yakasimba inoita kuti purati irambe iri mukati mekutsungirira kwakasimba kunodiwa pakuongorora kwekutanga uye kuyera gauge. Mapurati anoshandiswa pabasa rekugadzira, kugadzira zvishandiso, kana kuongororwa kwemhando yepamusoro yechitoro (Moderate Use Plates, Grade 1) anogona kushanda pamwedzi gumi nemiviri yekutarisa, kunyangwe basa rakakosha rinofanira kukonzera kuongororwa kwemwedzi mitanhatu. Kunyangwe mapuriti akachengetwa uye anoshandiswa kashoma (Low-Usage kana Reference Plates) anofanirwa kuenzaniswa makore maviri ega ega, sezvo zvinhu zvakatipoteredza, kusanganisira kugara uye kutenderera kwekupisa, zvichiri kukanganisa kutsamira kwepakutanga. Maitiro ekugadzirisa pachawo anosanganisira maitiro akasarudzika, kazhinji achishandisa mazinga emagetsi, auto-collimators, kana masisitimu ekuyera laser, kuratidza pamusoro peplate yese uye kuienzanisa nezvinodiwa zvakabvumidzwa. Mushumo unobuda unotsanangura kutsamira kwazvino uye unoratidza nzvimbo dzekusakara kwenzvimbo, zvichipa hwaro hwakajeka hwekuona kana plate ichida kudzoserwa (kudzoserwa) kuti idzoserwe mugiredhi. Kusateerera maitiro aya kunoisa panjodzi cheni yese yekusimbisa mhando; plate isina kurongeka chinhu chisingazivikanwe.
Bata Nekungwarira: Maitiro Ekufambisa Plate Yepamusoro yeGranite Zvakachengeteka
Mapureti epamusoro egranite anorema zvikuru uye anopfava zvinoshamisa, zvichiita kuti kutakurwa kwawo kwakachengeteka kuve basa rakakura rinoda ruzivo rwakakosha kudzivirira kukuvara kwakaipisisa kana, zvakatoipisisa, kukuvara kwemunhu. Zvichitaurwa zviri nyore, kubata zvisina kunaka kunogona kupwanya pureti kana kukanganisa kutsetseka kwayo kwakaganhurirwa nekukasira. Kana ukatarisana nemafambiro ekufambisa pureti yepamusoro yegranite, nzira yacho inofanira kuve nechokwadi chekuti inotsigira uye kugadzikana kwakafanana mukati mekuita uku. Kugadzirira kwakakosha: bvisa nzira yese yekufamba. Usamboshandisa maforklift akajairwa apo matine anotsigira nzvimbo diki chete; izvi zvinosimbisa huremu uye zvinoita kuti granite ityoke. Kune mapureti makuru, shandisa bhaa rekupararira uye tambo dzakafara, dzakasimba (kana zvisungo zvekusimudza zvakatsaurirwa) zvakagadzirirwa zviyero chaizvo zvepureti. Matambiro acho anofanira kusungirirwa pahupamhi hwepureti kuti agovere simba rekusimudza zvakaenzana sezvinobvira. Pakufambisa pureti daro pfupi pasi pechitoro, pureti inofanira kusungirirwa pabhodhi rinorema, rakagadzikana kana pallet, uye kana zviripo, zvishandiso zvekuyangarara kwemhepo zvakanaka sezvo zvichibvisa kukweshana uye zvinoparadzira huremu hwepureti pasi. Hapana mamiriro ezvinhu anofanira kutamiswa kana kusimudzwa nemipendero yayo chete; Granite haina simba zvakanyanya pakusimba, uye kusimudza kubva padivi kuchaunza kusimba kukuru kunogona kukonzera kupwanyika. Nguva dzose iva nechokwadi chekuti simba rekusimudza riri pasi pehukuru hwaro.
Hunyanzvi: Maitiro Ekugadzira Granite Surface Plate
Kugadzira ndiro yepamusoro yegranite chaiyo chiratidzo chehunyanzvi hwechinyakare hwakabatana nemetrology yemazuva ano. Hazvisi chinhu chinogona kuwanikwa muchitoro chemichina chakajairwa. Pakutsvaga magadzirirwo epurasitiki yepamusoro yegranite, munhu anoona kuti danho rekupedzisira, rakakosha rinogara richitenderera. Maitiro acho anotanga nekusarudza dombo rakakodzera—kazhinji granite nhema ine density yakakura, inozivikanwa neCTE yayo yakaderera uye kuomarara kwakanyanya. Slab isina kugadzirwa inochekwa, ichikuyiwa uchishandisa mavhiri makuru edhaimani kuti iite flatness yekutanga, uye inogadzikiswa. Granite inofanira "kukwegura" kuti ibvise chero kushushikana kwemukati kwakavharirwa mudombo panguva yekuchera nekugadzira. Danho rekupedzisira kutenderera, uko ndiro inopukutwa uchishandisa abrasive slurry uye master reference plates. Nyanzvi inoshanda munzvimbo inodzorwa, ichiyera nguva dzose pamusoro peplate uchishandisa zvishandiso zvakaita semazinga emagetsi. Kubviswa kwezvinhu kunoitwa nemaoko kana nemichina yakasarudzika yekutenderera, ichitarisa nzvimbo dzakakwirira dzakaonekwa panguva yekuyera. Izvi zvinoenderera mberi, kazhinji kwemaawa akawanda, kusvika kutsauka kwakayerwa pamusoro pese kwawira mukati me micro-inch tolerance inodiwa kune chinangwa giredhi. Maitiro aya anorema ndiwo anovimbisa flatness yakatenderwa iyo mainjiniya anovimba nayo zuva rega rega. Kugara kwenguva refu uye kuvimbika kwechigadzirwa chapera kunoita kuti mutengo wekugadzirwa uku uve wakakodzera.
Nguva yekutumira: Mbudzi-26-2025