I-Mastering For CMM Precision

Iningi laboCmm imishini (xhumanisa imishini yokulinganisa) zenziwa nguizingxenye zegwadle.

I-Coordinate Measuring Machines (CMM) iyisisetshenziswa sokulinganisa esivumelana nezimo futhi isithuthukise izindima eziningi ngendawo yokukhiqiza, okuhlanganisa ukusetshenziswa elabhorethri yekhwalithi evamile, kanye nendima yakamuva kakhulu yokweseka ukukhiqizwa ngokuqondile endaweni yokukhiqiza ezindaweni eziqinile.Ukuziphatha okushisayo kwezikali zesishumeki se-CMM kuba ukucatshangelwa okubalulekile phakathi kwendima yayo nokusebenza.

Esihlokweni esisanda kushicilelwa, ngu-Renishaw, kuxoxwa ngesihloko samasu okukhweza isikali se-encoder esintantayo kanye nobungcweti.

Izikali zesifaki khodi zizimele ngokuphumelelayo ngokushisa ku-substrate yazo ekhwezayo (ezintantayo) noma zincike ngokushisa ku-substrate (ehlakaniphile).Isikali esintantayo siyakhula futhi sivumelane ngokuvumelana nezici zokushisa zento yesilinganiso, kuyilapho isikali esihlakaniphile siyakhula futhi sifinyelelwe ngenani elifanayo ne-substrate engaphansi.Izindlela zokukhweza isikali sokulinganisa zinikeza izinzuzo ezihlukahlukene zezinhlelo zokusebenza zokulinganisa ezihlukahlukene: i-athikili evela ku-Renishaw yethula isimo lapho isikali esihlakaniphile singase sibe isisombululo esikhethwayo semishini yaselabhorethri.

Ama-CMM asetshenziselwa ukuthwebula idatha yokulinganisa enezinhlangothi ezintathu ngokunemba okuphezulu, izingxenye eziwumshini, njengamabhulokhi enjini namablade enjini yejethi, njengengxenye yenqubo yokulawula ikhwalithi.Kunezinhlobo ezine eziyisisekelo zomshini wokulinganisa wokudidiyela: ibhuloho, i-cantilever, i-gantry nengalo evundlile.Ama-CMM ohlobo lwebhuloho yiwona avame kakhulu.Esakhiweni sebhuloho le-CMM, i-quill ye-Z-axis igitshezwa enqoleni ehamba eduze kwebhuloho.Ibhuloho liqhutshwa ngezindlela ezimbili eziqondisayo ku-Y-axis direction.Isithuthuthu sishayela ihlombe elilodwa lebhuloho, kuyilapho elinye ihlombe ngokwesiko alishayelwanga: ukwakheka kwebhuloho kuvame ukuqondiswa / kusekelwa kuma-aerostatic bearings.Inqola (i-X-axis) kanye nequill (i-axis Z) ingase ishayelwe ibhande, isikulufu noma injini yomugqa.Ama-CMM aklanyelwe ukunciphisa amaphutha angaphindeki njengoba lawa kunzima ukunxephezela kusilawuli.

Ama-CMM asebenza kahle kakhulu ahlanganisa umbhede omkhulu wegwali oshisayo oshisayo kanye nesakhiwo esiqinile se-gantry / ibhuloho, eline-quill ye-inertia ephansi okunamathiselwe kuyo inzwa yokulinganisa izici zomsebenzi.Idatha ekhiqiziwe esetshenziselwa ukuqinisekisa ukuthi izingxenye zihlangabezana nokubekezelelana okunqunywe kusengaphambili.Izishumeki zomugqa ezinembayo eziphezulu zifakwa ezimbazoni ezihlukene zika-X, Y kanye no-Z ezingaba amamitha amaningi ubude emishinini emikhulu.

I-CMM yohlobo lwebhuloho legwadle elijwayelekile elisebenza egumbini elinesiphephetha-moya, elinezinga lokushisa eliphakathi kuka-20 ±2 °C, lapho izinga lokushisa legumbi lijikeleza kathathu njalo ngehora, livumela igwadule elishisa kakhulu elishisayo ukuthi ligcine izinga lokushisa elijwayelekile lesilinganiso 20 °C.Isishumeki sensimbi engagqwali esintantayo esintantayo esifakwe ku-axis ngayinye ye-CMM singazimela kakhulu ku-substrate yegwadle futhi siphendule ngokushesha ezinguqukweni zokushisa komoya ngenxa yokuguquguquka kwayo okushisayo okuphakeme kanye nesisindo esiphansi sokushisa, esiphansi kakhulu kunesisindo esishisayo setafula legwadle. .Lokhu kuzoholela ekunwebeni okukhulu noma ekufinyezweni kwesikali phezu kwe-eksisi evamile engu-3m ​​ecishe ibe ngu-60 µm.Lokhu kwandiswa kungaveza iphutha elikhulu lokulinganisa okunzima ukulinxephezela ngenxa yemvelo yakho eshintshashintshayo.

I-substrate mastered scale inketho ekhethwayo kulesi simo: isikali esihlakaniphile singakhula kuphela nge-coefficient of thermal expansion (CTE) ye-granite substrate futhi, ngakho-ke, sizobonisa ushintsho oluncane ekuphenduleni ama-oscillation amancane kuzinga lokushisa lomoya.Izinguquko zesikhathi eside ezingeni lokushisa kusafanele zicatshangelwe futhi lokhu kuzothinta izinga lokushisa elimaphakathi le-high-thermal mass substrate.Isinxephezelo sezinga lokushisa siqondile njengoba isilawuli sidinga kuphela ukunxephezela ukuziphatha okushisayo komshini ngaphandle kokucabangela nokuziphatha okushisayo kwesikali sesifaki khodi.

Kafushane, amasistimu okufaka ikhodi anezikali ezihlakaniphile ze-substrate ayisixazululo esihle kakhulu sokunemba kwama-CMM ane-CTE ephansi / ama-thermal mass substrates nezinye izinhlelo zokusebenza ezidinga amazinga aphezulu okusebenza kwe-metrology.Izinzuzo zezikali ezihlakaniphile zihlanganisa ukwenziwa lula kwezimiso zesinxephezelo esishisayo kanye namandla okunciphisa amaphutha okulinganisa angaphindeki ngenxa, ngokwesibonelo, ukuhluka kwezinga lokushisa lomoya endaweni yomshini wendawo.