Kutheni Uxinano kunye Nozinzo Lwesakhiwo Zimisela Ukuchaneka Kokulinganisa I-CMM

Abasebenzisi abaninzi babhidanisa ubulukhuni bezinto kunye nokuqina kwesakhiwo, kodwa ekusebenzeni ixesha elide kwe-CMM,uxinano yimfuneko yokumelana nokungcangcazela okusebenzayo kunye nozinzo lomthwalo. Ilitye eliqhelekileyo lemabula kunye nelitye elinoxinano oluphantsi elisetyenziswa ngabavelisi abancinci lineenkozo zangaphakathi ezikhululekileyo, ii-micro-pores ezininzi kunye noxinano oluphantsi ngokubanzi. Nangona zinokuhlangabezana neemfuno zokudibanisa ezisisiseko, uxinano lwazo oluphantsi alunakumelana nokudluliselwa kwe-micro-vibration kunye nempembelelo yomthwalo onamandla kwiindawo zoshishino.

I-granite emnyama eyenziwe ngokwezifiso ye-ZHHIMG yeziseko ze-CMM ifikelela kuxinano oluphezulu oluphantse lube yi-3100kg/m³, uphawu oluphambili oludlula kakhulu amatye aqhelekileyo kunye nezinto zesinyithi ezingaphelelanga. Uxinano oluphezulu luzisa iingenelo ezimbini zoshishino ezingenakutshintshwa kwizixhobo ze-CMM. Okokuqala, lubonelela nge-inertia yesakhiwo ephezulu kakhulu. Ngexesha lokuhamba kwe-gantry ye-CMM kunye nezinto zokulinganisa ngesantya esiphezulu, isiseko asiyi kuvelisa ukufuduka okuncinci okanye ukungcangcazela kwe-elastic ngenxa yempembelelo enamandla, okuqinisekisa ukuba i-datum ye-axis coordinate emithathu ihlala ihleli ngaphandle kokulungiswa ngexesha lokulinganisa ngexesha langempela.

Okwesibini, isakhiwo sekristale esixineneyo esinoxinano olukhulu sinamandla endalo okudambisa kakhulu. Singakwazi ukufunxa ngempumelelo kwaye sinciphise ukungcangcazela okuphakathi kwe-1–100Hz okuxhaphakileyo kwiindawo zokusebenzela — kubandakanya ukuxinana kokusebenza kwezixhobo, ukungcangcazela kokuhamba emhlabeni kunye nokuphazamiseka kokuhamba komoya. Siyiphepha ngokupheleleyo "ingxaki yokukhulisa ukungcangcazela" yeziseko zamatye ezinoxinano oluphantsi kunye nesinyithi esincinci, siqinisekisa ukuba unxibelelwano ngalunye lweprobe kunye nokufunyanwa kwedatha kukwimeko engaguqukiyo nezinzileyo. Esi sesona sizathu siphambili sokuba ii-CMM ze-semiconductor eziphezulu kunye ne-aerospace-grade zithathe uxinano oluphezulu lwe-3100kg/m³ njengomgangatho wezinto eziyimfuneko.

Ukuba uxinano lumiselaukuchaneka kokulinganisa kwangokokwi-CMM, uzinzo lolwakhiwo lulawulaukuchaneka kwexesha elideyezixhobo. Ukulinganisa kwemizi-mveliso akukokufunyanwa kube kanye, kodwa kukuphuma kwedatha yexesha elide, ibhetshi kunye neziphumo zedatha eziphindaphindwayo. Ukusilela kokuchaneka kwezixhobo zeCMM kwinqanaba lokugqibela akubangelwa kukuguga kwezixhobo, kodwa kukuguquka okucothayo kunye nokushukuma kwedatum kweziseko ezizinzileyo.

Ngokungafaniyo nentsimbi ephosiweyo, i-aluminium alloy kunye nezinto ezenziweyo ezenziweyo ezineengxaki zangaphakathi kunye nemingcipheko yokuguga, i-ZHHIMG's precision black granite yenza isakhiwo esizinzileyo se-molecular emva kwamakhulu ezigidi zeminyaka yokuguga kwendalo, ngaphandle koxinzelelo lwangaphakathi olushiyekileyo. Ayizukuvelisa ukugoba okungaguqukiyo, ukujika okanye ukujika ngokutshona ngokwandiswa kwexesha lenkonzo. Kwiindawo zokusebenza ezithwala umthwalo omninzi ixesha elide kunye neendawo ezintsonkothileyo zobushushu kunye nokufuma, ukuthamba, ukuthe tye kunye nokuma kwesiseko se-CMM kunokugcina uzinzo lwe-nano-level ngokusisigxina.

Kwiimeko zokusetyenziswa kweendawo zokusebenzela, umahluko wobushushu bemini kunye notshintsho lokufuma kwexesha lonyaka akunakuphepheka. Iziseko zesinyithi zinokwanda kobushushu kunye nokuguquguquka kokuqingqa, okukhokelela ekuphambukeni kwe-three-axis verticality kunye nokususwa kwe-datum, okufuna ukulinganiswa rhoqo ngesandla kunye nokulungiswa kobushushu. Ngokwahlukileyo koko, i-granite enozinzo oluphezulu ine-ultra-low thermal expansion coefficient, kunye nokuguquguquka kobushushu kuphela isiqingatha sesinyithi esityhidiweyo. Ingacinezela iimpazamo zokutyibilika kobushushu kakhulu, inciphise ukuxhomekeka kweenkqubo zeCMM kwimbuyekezo ye-algorithm, kwaye iqinisekise idatha yokufumanisa ehambelanayo nethembekileyo unyaka wonke.

Ishishini le-metrology elichaneke kakhulu lisoloko lilandela umthetho wesinyithi othiukuchaneka akunakuchaphazelekaOkwangoku, iimveliso ezininzi ezixhasa i-CMM ezingabizi kakhulu ezikwimarike zisebenzisa imabula eqhelekileyo enobunzima obuphantsi, ubume obukhululekileyo kunye nozinzo olubi ukuze zithathe indawo yegranite emnyama esemgangathweni ophezulu. Ezi zinto zimbi zibonakala zingabonakali ngembonakalo, kodwa zineziphene ezibulalayo ekusebenzeni kwe-metrology.

Imabula enoxinano oluphantsi idla ngokuguquguquka ngokucinezelwa, ukukrazula kunye nokuguquka kokufunxwa komswakama. Emva kwexesha elifutshane lokusebenza kwezixhobo, i-data yesiseko iya kutshintsha kancinci, nto leyo ekhokelela ekungahambelani kokulinganisa okuhle nokubi, ukuphindaphindwa okungalunganga kwedatha yokufumanisa ibhetshi, kunye nokugweba gwenxa kwezixhobo zokusebenza ezifanelekileyo. Olu hlobo lwempazamo yokulinganisa engabonakaliyo luya kuchaphazela ngqo ulawulo lomgangatho wemveliso kunye nokuchaneka kwemveliso yemizi-mveliso, nto leyo ebangela ukuba kubekho imingcipheko efihlakeleyo kuyo yonke ikhonkco yokuvelisa ngokuchanekileyo.

Ngokunamathela kwisibophelelo sabathengi esithi “Akukho kuqhatha, Akukho kufihlwa, Akukho kulahlekiswa”, i-ZHHIMG iyamelana ngokuqinileyo nokutshintshwa kwezinto ezingaphantsi. Silawula ngokungqongqo umgangatho ophezulu we-3100kg/m³ wezinto ezikrwada, kwaye sihambelana netekhnoloji yokugaya ngesandla echanekileyo kakhulu kunye nemigangatho yokucubungula iworkshop engagungqiyo yobushushu kunye nokufuma. Isiseko ngasinye se-CMM granite sisusa umngcipheko wokusebenza kwezinto ezivela kumthombo, siqinisekisa ukuba izixhobo zigcina imveliso echanekileyo kakhulu kwinqanaba lemizi-mveliso kangangeminyaka emininzi.                                                                                                                                                 

Ukusebenza kakuhle kwezinto ezisetyenzisiweyo kufuna ubuchwepheshe benkqubo yobungcali ukuze kukhutshwe ixabiso eliphezulu. Ixhomekeke kwisiseko semveliso esimiselweyo se-200,000 ㎡ kunye nezixhobo zokugaya ezinkulu kakhulu zehlabathi, i-ZHHIMG ifezekisa ukucutshungulwa okudibeneyo kwezinto eziluhlaza zegranite ezinobunzima obuphezulu. Indawo yokusebenzela engenalo uthuli oluhlala luhleli kunye nobushushu obungaguqukiyo kunye nesakhiwo somsele wobuchwephesha esithintela ukutshatyalaliswa kususa ukuphazamiseka kwangaphandle kwinkqubo yemveliso, ngelixa iingcali zokugaya eziphezulu ezinamava angaphezu kweminyaka engama-30 zicoca isiseko ukuya kwinqanaba elincinci.

Zonke iimveliso ziyahambelana nemigangatho yehlabathi ye-metrology yamazwe ngamazwe, kwaye zilinganiswa ngezixhobo zovavanyo eziphezulu ezifana neGerman Mahr kunye neBritish Renishaw, kunye nesatifikethi selizwe se-metrology esilandelekayo. Sikhokela kushishino ngesatifikethi senkqubo ye-ISO epheleleyo kunye netekhnoloji yamazwe ngamazwe enelungelo elilodwa lomenzi, sinika abavelisi bezixhobo ze-CMM zehlabathi izisombululo zesiseko se-granite ezinoxinano oluphezulu, uzinzo oluphezulu kunye nezisombululo zesiseko se-granite ezichanekileyo ze-zero-datum-drift.

Kwimishini yokulinganisa ye-CMM coordinate, ii-probes ezichanekileyo kunye nesoftware "ziyinkqubo yokuqonda" yezixhobo, ngelixa isiseko se-granite esixineneyo nesizinzileyo kakhulu "sisisiseko samathambo" sayo yonke imilinganiselo yokuchaneka. Zizinto ezinoxinano olukhulu kuphela ezinokumelana nokungcangcazela kwemizi-mveliso kunye nokuphazamiseka komthwalo oguqukayo, kwaye yisakhiwo se-granite esizinzileyo sendalo kuphela esinokufezekisa ukusebenza kwexesha elide kwe-zero-datum-drift.

Inamathela kumgaqo-nkqubo womgangatho othi “Ishishini elichanekileyo alinakuba nzima kakhulu”, i-ZHHIMG ihlala ithatha ukusebenza kwezinto ezibonakalayo kunye nokuzinza kwesakhiwo njengemigangatho ephambili yemveliso, iqhubeka nokunika amandla ishishini elichanekileyo kakhulu ngetekhnoloji entsha kunye nobugcisa obuphezulu, kwaye inika inkxaso ehlala ihleli nezinzileyo yokuchaneka kwezixhobo ze-metrology zehlabathi ezikumgangatho ophezulu.