Nei Vavaki veMichina Yekugadzira Vachiramba Vachichinja Kubva kuCast Iron kuenda kuGranite

Chero ani zvake akambopedza nguva ari padanho rekuongorora metrology angangove akaona maitiro akafanana: michina yekare inogara pamibhedha yesimbi yakakandwa, mitsva iri padombo dema. Kuchinja ikoko hakuna kuitika nekuti granite inotaridzika zvakanaka pasi pemwenje. Izvi zvakaitika nekuda kwedambudziko refizikisi risingawanzoitiki - kuwedzera kwekupisa.

Simbi yakakandwa inokura uye inodzika pa10-12 x 10⁻⁶ pa °C. Izvi zvinonzwika zvidiki kusvika wazviisa padyo negranite yechisikigo, iyo inowanzogara pa5-8 x 10⁻⁶ pa °C, uye mune mamwe magranite matema akakora ari padyo ne4-5 x 10⁻⁶. Papuratifomu yekuyera yemita imwe, 1°C inotenderera mukupisa kwemhepo kunogona kushandura pamusoro pesimbi yakakandwa nema microns akati wandei kupfuura granite yakaenzana. Kune kutsungirira pasi reworkshop, hapana ane hanya nazvo. Kune CMM inoongorora semiconductor wafer stage, kana laser interferometer inobata sub-micron repeatable, musiyano iwoyo ndiwo mutambo wese.

Kudzikisa mvura kunokosha sekuwedzera

Kugadzikana kwekupisa kunonyanya kutariswa, asi kudzikamisa vibration kunofungidzirwa kuti kwakakoshawo kune chero chinhu chinoita kufamba kwakanyatsojeka - misoro yekutora-ne-kuisa, XY stages, mapuratifomu ane mhepo. Granite isimbi ine crystalline aggregate kwete simbi yakafanana, saka kuzununguka kwemuchina hakupararire kuburikidza nayo nenzira imwecheteyo kuburikidza nesimbi yakakandwa. Miganhu yemukati yegorosi inopararira uye inotora simba panzvimbo pekutumira rakachena. Muchokwadi izvi zvinoreva ahwaro hwegraniteinogadzikana nekukurumidza mushure mekunge muchina wamira kufamba, izvo zvinoshandura zvakananga kuva nguva pfupi yekugara uye simba rakawanda pamitsetse yekuongorora nekugadzira.

Panewo nyaya yezvinoitika kwenguva refu. Mibhedha yesimbi yakaumbwa, kunyangwe yakarerutswa nekushushikana, inogona kudonha zvishoma nekufamba kwemakore sezvo kushushikana kwemukati mesimbi kuchipararira. Granite, yakatogadzirwa pasi pekumanikidzwa kukuru kwechisikigo munguva yegeology, haina dambudziko iroro - haisi "kugadzikana" nenzira iyo simbi yakaumbwa nayo.

Haisi granite yese yakaenzana

Ichi ndicho chikamu chinovhiringidza vatengi vazhinji. Granite inotengeswa zvichienderana nehuwandu uye ruvara sezvainoitwa matanda pamhando, asi mashandiro emuviri anosiyana zvakanyanya pakati pemagori. Matombo ane huwandu hwakaderera, kana kuti zvinhu zvine mitsetse inooneka uye zviyo zvisingawirirane, haazogari akatsetseka nekufamba kwenguva segranite nhema yakakora, ine giraidhi rakanaka iri pakati pe2,900-3,100 kg/m³. Marble dzimwe nguva inotsiviwa nevatengesi vadiki nekuti yakachipa uye iri nyore kugadzira, asi marble idombo remetamorphic carbonate - rakapfava, rine maburi akawanda, uye harina kugadzikana zvakanyanya pane granite chaiyo. Kune countertop yekushongedza izvo hazvina basa. Kune plate yepamusoro iyo CMM probe ichareva kane zviuru pazuva, zvakakosha zvikuru, uye ndeimwe yenzira dzakajairika dzekutenga vanoshomeka vasingazive kusvika calibration drift yaonekwa mwedzi yakati wandei gare gare.

Izvi zvinoonekwa papi mukuita

Kuchinja kwekuisa mabhesi egranite kunonyanya kuonekwa mumidziyo yekuongorora yesemiconductor, PCB drilling uye AOI systems, michina yekuyera ine macoordinate matatu, laser interferometry setups, uye zvakanyanya mukugadzira bhatiri ne precision optics, uko sub-micron positioning yave chinhu chinodiwa pakutanga kwete sechinhu cheumbozha. Sezvo kushivirira mumaindasitiri aya kuchiramba kuchisimba - zvichikonzerwa nema chip nodes madiki, mabhatiri akatetepa, uye laser systems dzinokurumidza - musiyano uripo pakati pe "good enough" cast iron ne dimensionally stable granite uchawedzera kukosha, kwete zvishoma.

Kana paine chimwe chinhu chidiki chingatorwa nemainjiniya vari kufunga nezvepuratifomu itsva yekunyatsorongeka, ndeichi: bvunza huwandu chaihwo hwekuwanda kwesimbi uye kuwedzera kwekupisa, kwete kungo "granite" sechinhu chekutarisa. Musiyano uripo pakati pegranite yakakora yakasarudzwa zvakanaka nechinotsiva chemhando yakaderera unogona kuva musiyano uripo pakati pemuchina unochengetedza calibration kwemakore gumi uye unoda kugadziriswazve kota yega yega.