Kwintsimi yokulinganisa ngokuchanekileyo, i-granite straightedge, njengesixhobo esibalulekileyo sokuqinisekisa ukuchaneka kwezixhobo kunye nokulinganisa, ibakala layo le-flatness lichaphazela ngokuthe ngqo ukuthembeka kweziphumo zokulinganisa. Isiqinisekiso seZiko leSizwe leMigangatho kunye neTekhnoloji (NIST) yase-United States ngumgangatho ogunyazisiweyo owaziwayo kwihlabathi jikelele wezixhobo zokulinganisa ezichanekileyo, kunye nenqanaba le-AA elithambileyo lelinye lamabanga aneemfuno ezichaneke kakhulu. Njengophawu oluphambili kushishino, i-ZHHIMG, enobuchwephesha obuphambili kunye nobuchwephesha obungqongqo, inceda abasebenzisi ukuba bafezekise isiqinisekiso se-NIST kunye neenjongo zomgangatho we-AA wemigangatho yegranite straighteers. Oku kulandelayo kuya kukunika uhlalutyo oluneenkcukacha lwamanqaku aphambili olungelelwaniso kunye neendlela zokuphunyezwa.
1. Qonda isatifikethi se-NIST kunye nenqanaba le-AA-level flatness
Isiqinisekiso se-NIST sidume ngovavanyo olungqongqo kunye neenkqubo zovavanyo, injongo yaso engundoqo ikukuqinisekisa ukuba izixhobo zokulinganisa ziyahlangabezana nemigangatho yehlabathi yokuchaneka. Kwintsimi yegranite straightedge, imfuno yomgangatho we-AA ye-flatness ingqongqo kakhulu. Ngokubanzi, kuchaziwe ukuba impazamo yokucaba ngaphakathi kwemitha nganye ubude kufuneka ilawulwe ngaphakathi kwe-±0.5μm. Lo mgangatho ubeka phambili iimfuno eziphezulu kakhulu kwiipropathi zezinto eziphathekayo, iteknoloji yokucubungula kunye neteknoloji yokulinganisa i-straightedge. I-AA-level granite straightedge eqinisekiswe yi-NIST ayisosiqinisekiso esithembekileyo somlinganiselo ophezulu ochanekileyo, kodwa kwakhona bubungqina obunamandla bamandla obugcisa beshishini kunye nomgangatho wemveliso.
Ii. Isiseko soMgangatho se-ZHHIMG granite straightedge
I-ZHHIMG granite straightedge ibeke isiseko esichanekileyo ukusuka kwinqanaba lokukhetha izinto. Igranite yendalo ekhethiweyo ekumgangatho ophezulu, enekristale yangaphakathi eshinyeneyo kunye nesakhiwo esifanayo, inomlinganiso wokwandiswa kwe-thermal ephantsi njenge-5-7 × 10⁻⁶/℃, kwaye inozinzo lwendalo kunye nobuchule bokuchasana nokuguqulwa, inika inzuzo engokwemvelo yokufezekisa i-AA-level flatness. Ngexesha lokucubungula, i-ZHHIMG isebenzisa iindlela eziphambili ezifana nokusila kunye nokupolisha kwe-CNC, kudityaniswe nezixhobo zokubona ezichanekileyo ezifana ne-laser interferometers yokulinganisa ixesha lokwenyani, ukuqinisekisa ukuba umphezulu we-straighteer ufezekisa ukuchaneka okuphakamileyo okuphezulu ngexesha lokucubungula, ukudala iimeko ezifanelekileyo zomsebenzi wokulinganisa olandelayo.
Iii. Amalungiselelo Phambi Kokulinganisa
Phambi kokwenza ulungelelwaniso lwesatifikethi se-NIST, kuyafuneka ukuqinisekisa ukuba i-straightedge ikwimeko engcono. Okokuqala, umphezulu we-straightedge kufuneka ucocwe nzulu. Sebenzisa i-lint-free cloth kunye nesicoci esikhethekileyo sokususa amabala e-oyile, uthuli kunye nezinye izinto ezingcolileyo kumphezulu ukuze ugweme ukungcola okuchaphazela ukuchaneka kokulinganisa. Okwesibini, beka i-straightedge kwindawo eneqondo lokushisa kunye nokufuma rhoqo ngaphezu kweeyure ezingama-24 ukuyivumela ukuba ivumelane ngokupheleleyo nobushushu bendalo kunye nokufuma, ukuphelisa ukukhubazeka okuncinci okubangelwa utshintsho lwendalo. Ukongezelela, izixhobo zokulinganisa ezichanekileyo ezifana ne-laser interferometers kunye namanqanaba ombane kufuneka zilungiswe. Ukuchaneka kwezi zixhobo kukuchaphazela ngokuthe ngqo ukuchaneka kweziphumo zokulinganisa.
Iv. Inkqubo yoLungiso kunye neeTekhnoloji eziPhambili
Ulungelelwaniso olurhabaxa: Sebenzisa inqanaba lombane ukwenza umlinganiselo wokuqala we-straightedge. Qokelela indawo yokulinganisa ngezithuba ezithile (ezifana ne-100mm) ukufumana idata eqikelelweyo yecontour yomphezulu othe ngqo. Ngokusekelwe kwiziphumo zokulinganisa, umphezulu we-straightedge wawuxutywe ngoomatshini ngokusebenzisa izixhobo zokugaya ze-CNC ukuze kususwe iindawo eziphakamileyo ezicacileyo, okwenza ukuba i-flatness ifike kwiimfuno zezinga le-AA-level.
Ukulinganisa ngokuchanekileyo: Ukulinganisa okuchanekileyo kusetyenziswa i-interferometer ye-laser, ekwazi ukubona ngokuchanekileyo utshintsho lokuphakama phezu kwendawo eqondileyo kwinqanaba le-micrometer. Ngokusekelwe kwidatha eyondliwe yi-interferometer, umphezulu we-straightedge wawucolile ngokudibanisa ukugaya ngesandla kunye ne-CNC machining. Ngethuba lenkqubo yokugaya, uxinzelelo lokugaya kunye nolwalathiso kufuneka luhlale luhlengahlengiswa ukuphelisa ngokuthe ngcembe impazamo ye-flatness, ukwenzela ukuba i-flatness surface ye-straightedge ifikelele kwinqanaba eliphezulu.
Ukuqinisekiswa okuphindaphindiweyo kunye nokulungiswa kakuhle: Emva kokugqiba ukulinganisa okulungileyo, sebenzisa i-laser interferometer kunye nenqanaba lombane ukwenza uhlolo olubanzi lwe-straightedge kwakhona ukuqinisekisa ukuba impazamo ye-flatness yendawo yokulinganisa nganye ingaphakathi kwinqanaba le-AA-level standard. Ukuba iimpazamo ezincinci zifunyenwe kwindawo yengingqi, ukulungiswa kakuhle okujoliswe kuko kufuneka kuqhutywe de umcaba opheleleyo we-straightedge uhlangabezane ngokupheleleyo neemfuno ze-AA-level yesiqinisekiso se-NIST.
Isicelo seSiqinisekiso se-V. NIST kunye noPhononongo
Emva kokugqiba ulungelelwaniso kunye nokuqinisekisa ukuba i-straightedge iphumelele i-AA-level flatness, ungangenisa isicelo sesiqinisekiso kwi-NIST. Ngethuba lenkqubo yesicelo, iiparitha zezobugcisa ezicacileyo ze-straightedge, iinkcazo zeteknoloji yokucubungula, iirekhodi zokulinganisa kunye nezinye izinto kufuneka zinikezelwe. I-NIST iya kuthumela abaphononongi abaqeqeshiweyo ukuba benze uhlolo kwindawo kunye novavanyo lwendlela eqondileyo. Uphononongo luya kugubungela imiba emininzi efana ne-flatness, ukuzinza kwe-thermal, kunye nokuxhatshazwa kokugqoka kwe-straightedge. Kuphela i-granite straightedge eye yadlula uphononongo olungqongqo inokufumana isatifikethi se-NIST kwaye ibe yimveliso yomgangatho kwindawo yokulinganisa ngokuchanekileyo.
Ngokulandela ezi zikhokelo zikhankanywe ngasentla ze-ZHHIMG granite straightedge calibration, amashishini kunye namaziko ophando anokufikelela kwisatifikethi se-NIST kunye neenjongo ze-AA-level flatness ngokufanelekileyo. Nokuba kumashishini aneemfuno ezichaneke kakhulu ezinje ngokwenziwa koomatshini, i-aerospace, okanye iitshiphusi ze-elektroniki, i-ZHHIMG granite straightedge eqinisekiswe yi-NIST iya kuba liqabane elithembekileyo ekuqinisekiseni ukuchaneka komlinganiselo kunye nomgangatho wemveliso, ukunceda amashishini ngokuqhubekayo ukutyhoboza kwintsimi yomlinganiselo ochanekileyo kwaye aqhubele phambili kwikamva lokuchaneka okuphezulu.
Ixesha lokuposa: May-13-2025