Ubuchule boKuchaneka kweCMM

Ubininzi beCmm oomatshini (ukulungelelanisa oomatshini bokulinganisa) zenziwe nguamacandelo egranite.

I-Coordinate Measuring Machines (CMM) sisixhobo sokulinganisa esiguquguqukayo kwaye siphuhlise inani leendima kunye nommandla wokuvelisa, kubandakanywa nokusetyenziswa kwibhubhoratri yomgangatho wendabuko, kunye nendima yamva nje yokuxhasa ngokuthe ngqo imveliso kumgangatho wokuvelisa kwiindawo ezinzima.Ukuziphatha okushushu kwezikali ze-encoder ze-CMM kuba yingqwalasela ebalulekileyo phakathi kweendima zayo kunye nokusetyenziswa.

Kwinqaku elisanda kupapashwa, nguRenishaw, umxholo wokudada kunye nobuchwephesha bokukhwelisa isikali sobuchule bokukhwelisa kuyaxoxwa.

Izikali ze-encoder zixhomekeke ngokufanelekileyo ngokwe-thermal kwi-substrate yazo enyukayo (edadayo) okanye ixhomekeke kwi-thermal kwi-substrate (i-mastered).Isikali esidadayo siyakhula kwaye sivumelane ngokweempawu ze-thermal zemathiriyeli yesikali, ngelixa isikali se-mastered sandisa kwaye sivumelane ngesantya esifanayo ne-substrate engaphantsi.Ubuchule bokuxhoma isikali sokulinganisa bubonelela ngeenzuzo ezahlukeneyo zosetyenziso olwahlukeneyo lomlinganiselo: inqaku elisuka kwiRenishaw libonisa imeko apho isikali esinobuchule sinokukhethwa isisombululo koomatshini baselabhoratri.

Ii-CMM zisetyenziselwa ukubamba idatha yomlinganiselo omacala-ntathu ngokuchaneka okuphezulu, amacandelo akhiwe ngoomatshini, afana neebhloko ze-injini kunye ne-jet injini blades, njengenxalenye yenkqubo yokulawula umgangatho.Kukho iintlobo ezine ezisisiseko zokulungelelanisa umatshini wokulinganisa: ibhulorho, i-cantilever, i-gantry kunye nengalo ethe tye.IiCMM zohlobo lwebhulorho zezona zixhaphakileyo.Kuyilo lwebhulorho yeCMM, i-Z-axis quill ixhonywe kwikhareji ehamba ecaleni kwebhulorho.Ibhulorho iqhutywa ngeendlela ezimbini zesikhokelo kwicala le-Y-axis.Imoto iqhuba igxalaba elinye lebhulorho, ngelixa elinye igxalaba ngokwesiko lingaqhutywanga: ubume bebhulorho buhlala bukhokelwa / buxhaswe kwiibheringi ze-aerostatic.Inqwelo (i-X-axis) kunye ne-quill (i-Z-axis) inokuqhutywa ngebhanti, i-screw okanye i-motor linear.Ii-CMM zenzelwe ukunciphisa iimpazamo ezingaphindi ziphindeke njengoko ezi kunzima ukubuyisela kwisilawuli.

Ukusebenza okuphezulu kwe-CMMs kubandakanya ibhedi enkulu yegranite eshushu kunye negantry eqinileyo / isakhiwo sebhulorho, kunye ne-inertia ephantsi encanyathiselwe inzwa yokulinganisa iimpawu zomsebenzi.Idatha eyenziweyo esetyenziselwa ukuqinisekisa ukuba iinxalenye zihlangabezana nokunyamezela kwangaphambili.Izikhowudi zomgca ezichanekileyo zifakwe kwii-axes ezihlukeneyo ze-X, Y kunye ne-Z ezinokuba ziimitha ezininzi ubude koomatshini abakhulu.

Ibhulorho yegranite eqhelekileyo yohlobo lwe-CMM esebenza kwigumbi elinomoya opholileyo, elinobushushu obuphakathi kwama-20 ±2 °C, apho ubushushu begumbi bujikeleza kathathu ngeyure nganye, ivumela igranite enobushushu obuphezulu ukuba igcine iqondo lobushushu elingaguqukiyo. 20 °C.Isifaki khowudi sentsimbi esidadayo esidadayo esifakwe kwi-axis nganye ye-CMM iya kuzimela ubukhulu becala kwi-substrate yegranite kwaye iphendule ngokukhawuleza kutshintsho lobushushu bomoya ngenxa yokuhanjiswa kwayo okuphezulu kwe-thermal kunye nobunzima obuphantsi be-thermal, obungaphantsi kakhulu kunobunzima bobushushu betafile yegranite. .Oku kuya kukhokelela ekwandiseni ubuninzi okanye ukucutheka kwesikali ngaphezu kwesiqhelo se-3m esisijikelezileyo esimalunga ne-60 µm.Olu lwandiso lunokuvelisa impazamo enkulu yokulinganisa ekunzima ukuyihlawula ngenxa yokwahluka kwexesha.

I-substrate mastered scale lukhetho olukhethiweyo kulo mzekelo: isikali esinobuchule siya kwandiswa kuphela kunye ne-coefficient yokwanda kwe-thermal (CTE) ye-granite substrate kwaye, ngoko ke, iya kubonisa utshintsho oluncinci ekuphenduleni i-oscillations encinci kwiqondo lokushisa lomoya.Utshintsho lwexesha elide kwiqondo lobushushu kusafuneka luqwalaselwe kwaye oku kuya kuchaphazela i-avareji yobushushu be-high-thermal mass substrate.Imbuyekezo yobushushu ithe ngqo njengoko umlawuli kufuneka abuyekeze kuphela indlela yokuziphatha eshushu yomatshini ngaphandle kokuqwalasela isikali se-encoder sokuziphatha kobushushu.

Isishwankathelo, iisistim ze-encoder ezine-substrate mastered scales zisisombululo esihle kakhulu sokuchaneka kweeCMM ezine-CTE ephantsi / i-thermal mass substrates kunye nezinye izicelo ezifuna amanqanaba aphezulu okusebenza kwe-metrology.Iingenelo zezikali ezinobuchule zibandakanya ukwenziwa lula kolawulo lwembuyekezo ye-thermal kunye namandla okunciphisa iimpazamo zokulinganisa ezingaphindi ziphindeke ngenxa, ngokomzekelo, ukuhluka kobushushu bomoya kwindawo yomatshini wendawo.