Kwicandelo lokulinganisa ngokuchanekileyo, i-granite straightedge, njengesixhobo esibalulekileyo sokuqinisekisa ukuchaneka kwezixhobo kunye nokulinganisa, umgangatho wayo wokuthamba uchaphazela ngokuthe ngqo ukuthembeka kweziphumo zokulinganisa. Isatifikethi seNational Institute of Standards and Technology (NIST) sase-United States sisiqinisekiso esivunyiweyo kwihlabathi liphela sezixhobo zokulinganisa ngokuchanekileyo okuphezulu, kwaye ukuthamba kwinqanaba le-AA yenye yemigangatho eneemfuno ngokuchanekileyo okuphezulu kakhulu. Njengophawu oluphambili kushishino, i-ZHHIMG, ngobuchwepheshe bayo obuphambili kunye nobugcisa obungqongqo, inceda abasebenzisi ukuba bafezekise isiqinisekiso se-NIST kunye neenjongo zokuthamba kwinqanaba le-AA kubalungisi be-granite. Oku kulandelayo kuya kukunika uhlalutyo oluneenkcukacha lwamanqaku aphambili okulinganisa kunye neendlela zokuphumeza.
1. Qonda isiqinisekiso se-NIST kunye nomgangatho wokutyibilika kwinqanaba le-AA
Isatifikethi se-NIST saziwa ngeenkqubo zaso zovavanyo novavanyo eziqatha, injongo yaso ephambili kukuqinisekisa ukuba izixhobo zokulinganisa ziyahlangabezana nemigangatho yokuchaneka ehamba phambili kwihlabathi. Kwicandelo le-granite straightedge, imfuneko ye-AA grade flatness ingqongqo kakhulu. Ngokubanzi, kuchazwe ukuba impazamo ye-flatness ngaphakathi kobude bemitha nganye kufuneka ilawulwe ngaphakathi kwe-±0.5μm. Lo mgangatho ubeka phambili iimfuno eziphezulu kakhulu zeempawu zezinto, iteknoloji yokucubungula kunye netekhnoloji yokulinganisa ye-straightedge. I-granite straightedge ye-AA-level eqinisekiswe yi-NIST ayisiyo kuphela isiqinisekiso esithembekileyo sokulinganisa ngokuchanekileyo okuphezulu, kodwa ikwabubungqina obunamandla bamandla obuchwephesha beshishini kunye nomgangatho wemveliso.
Ii. Isiseko soMgangatho se-ZHHIMG granite straightedge
I-ZHHIMG granite straightedge ibeke isiseko esichanekileyo kakhulu ukusuka kwinqanaba lokukhetha izinto. I-granite yendalo ekhethiweyo ekumgangatho ophezulu, ene-crystallization yangaphakathi exineneyo kunye nesakhiwo esifanayo, inomlinganiselo wokwandisa ubushushu ophantsi njenge-5-7 × 10⁻⁶/℃, kwaye inamandla okuqina kunye nokukwazi ukulwa nokuguquguquka, inika inzuzo yendalo yokufikelela kwi-AA-level flatness. Ngexesha lesigaba sokucubungula, i-ZHHIMG isebenzisa iindlela eziphambili ezifana nokusila nokupolisha i-CNC, kunye nezixhobo zokufumanisa ezichanekileyo kakhulu ezifana ne-laser interferometers zokulinganisa ngexesha langempela, ukuqinisekisa ukuba umphezulu we-straighteer ufikelela kuchanekileyo lokuqala ngexesha lokucubungula, okwenza iimeko ezifanelekileyo zomsebenzi wokulinganisa olandelayo.
Iii. Amalungiselelo Ngaphambi Kokuhlengahlengiswa
Ngaphambi kokuba wenze uhlengahlengiso lwesatifikethi se-NIST, kuyimfuneko ukuqinisekisa ukuba udonga oluthe tye lukwimeko entle kakhulu. Okokuqala, umphezulu wodonga oluthe tye kufuneka ucocwe nzulu. Sebenzisa ilaphu elingena-lint kunye nesicoci esikhethekileyo ukususa amabala eoyile, uthuli kunye nezinye izinto ezingcolileyo kumphezulu ukuze uphephe ukungcola okuchaphazela ukuchaneka kohlengahlengiso. Okwesibini, beka udonga oluthe tye kwindawo enobushushu obungaguqukiyo kunye nokufuma ngaphezulu kweeyure ezingama-24 ukuze luvumeleke ngokupheleleyo kubushushu kunye nokufuma kokusingqongileyo, kususwe ukuguquguquka okuncinci okubangelwa lutshintsho lokusingqongileyo. Ukongeza, izixhobo zokulinganisa ezichanekileyo kakhulu ezifana nee-laser interferometers kunye namanqanaba e-elektroniki kufuneka zilungiswe. Ukuchaneka kwezi zixhobo kuchaphazela ngokuthe ngqo ukuchaneka kweziphumo zohlengahlengiso.
Iv. Inkqubo yoLungiso kunye neeTekhnoloji eziphambili
Ukulinganisa okurhabaxa: Sebenzisa inqanaba le-elektroniki ukwenza umlinganiselo wokuqala we-straightedge. Qokelela indawo yokulinganisa ngamaxesha athile (njenge-100mm) ukuze ufumane idatha eqikelelweyo ye-contour yomphezulu we-straightedge. Ngokusekelwe kwiziphumo zokulinganisa, umphezulu we-straightedge wawucutshungulwa ngezixhobo zokugaya ze-CNC ukususa amanqaku aphezulu acacileyo, okwenza ukuba i-flatness ekuqaleni ifikelele kwiimfuno ezisemgangathweni ze-AA-level.
Ukulinganiswa ngokuchanekileyo: Ukulinganiswa ngokuchanekileyo kwenziwa kusetyenziswa i-laser interferometer, enokuqaphela ngokuchanekileyo utshintsho lokuphakama kumphezulu we-straightedge kwinqanaba le-micrometer. Ngokusekelwe kwidatha efunyenwe yi-interferometer, umphezulu we-straightedge wawucolwa kakuhle ngokudibanisa ukugaya ngesandla kunye ne-CNC machining. Ngexesha lenkqubo yokugaya, uxinzelelo lokugaya kunye necala kufuneka zihlengahlengiswe rhoqo ukuze kupheliswe kancinci impazamo ye-flatness, ukuze i-straightedge yomphezulu we-straightedge ifikelele kwinqanaba eliphezulu.
Ukuqinisekiswa okuphindaphindiweyo kunye nokulungiswa kakuhle: Emva kokugqiba ukulinganiswa okuncinci, sebenzisa i-laser interferometer kunye nenqanaba le-elektroniki ukwenza uhlolo olupheleleyo lwe-straightedge kwakhona ukuqinisekisa ukuba impazamo yokuthambatha yendawo nganye yokulinganisa ingaphakathi koluhlu oluqhelekileyo lwe-AA. Ukuba kufunyenwe iimpazamo ezincinci kwindawo yasekuhlaleni, ukulungiswa okujoliswe kuko kufuneka kwenziwe de kube ukuthambatha okupheleleyo kwe-straightedge kuhlangabezane ngokupheleleyo neemfuno ze-AA zesatifikethi se-NIST.
Isicelo kunye noHlolo lweSiqinisekiso se-NIST
Emva kokugqiba ukulinganisa nokuqinisekisa ukuba i-straightedge ifikelele kwinqanaba le-AA, ungangenisa isicelo sesatifikethi kwi-NIST. Ngexesha lenkqubo yesicelo, kufuneka kubonelelwe ngemida yobugcisa eneenkcukacha ze-straightedge, iinkcazo zobuchwepheshe bokucubungula, iirekhodi zokulinganisa kunye nezinye izinto. I-NIST iya kuthumela abahloli abaziingcali ukuba benze uhlolo kunye novavanyo lwe-straightedge kwindawo. Uphononongo luya kugubungela iinkalo ezininzi ezifana ne-flatness, uzinzo lobushushu, kunye nokumelana nokuguguleka kwe-straightedge. I-granite straightedge kuphela ephumelele uphononongo oluqinileyo enokufumana isiqinisekiso se-NIST kwaye ibe yimveliso yokulinganisa kwicandelo lokulinganisa ngokuchanekileyo.
Ngokulandela izikhokelo zokulinganisa i-ZHHIMG granite straightedge calibration ezikhankanyiweyo apha ngasentla, amashishini kunye namaziko ophando anokufezekisa isiqinisekiso se-NIST kunye neenjongo ze-AA-flatness ngendlela ephumelelayo. Nokuba kumashishini aneemfuno eziphezulu kakhulu ngokuchanekileyo ezifana nokuvelisa oomatshini, i-aerospace, okanye iitships ze-elektroniki, i-ZHHIMG granite straightedge eqinisekiswe yi-NIST iya kuba liqabane elithembekileyo ekuqinisekiseni ukuchaneka kokulinganisa kunye nomgangatho wemveliso, inceda amashishini ukuba aqhubeke ephumelela kwicandelo lokulinganisa ngokuchanekileyo kwaye aqhubele phambili kwikamva elichaneke kakhulu.
Ixesha leposi: Meyi-13-2025