Izinto zokwakha ezizinzile ngokushisa.Qiniseka ukuthi amalungu ayinhloko okwakhiwa komshini aqukethe izinto ezingenwa kalula ukuhluka kwezinga lokushisa.Cabangela ibhuloho (i-X-eksisi yomshini), izisekelo zebhuloho, isitimela esiqondisayo (umshini we-Y-eksisi), ama-bearings kanye ne-Z-axis bar yomshini.Lezi zingxenye zithinta ngokuqondile izilinganiso zomshini nokunemba kokunyakaza, futhi zakha izingxenye zomgogodla we-CMM.
Izinkampani eziningi zenza lezi zingxenye nge-aluminium ngenxa yesisindo sayo esilula, ukusebenziseka kalula kanye nezindleko eziphansi uma kuqhathaniswa.Kodwa-ke, izinto ezifana negwadle noma i-ceramic zingcono kakhulu kuma-CMM ngenxa yokuqina kwawo okushisayo.Ngaphezu kweqiniso lokuthi i-aluminiyamu inweba cishe ngokuphindwe kane kunegwadle, igwadle linezimfanelo eziphakeme zokudambisa ukudlidliza futhi linganikeza isiphetho esihle kakhulu lapho ama-bearings angahamba khona.I-Granite, empeleni, ibe yindinganiso eyamukelwa kabanzi yokulinganisa iminyaka.
Kuma-CMM, nokho, i-granite ine-drawback eyodwa-iyasinda.Ingqinamba iwukuba ukwazi, ngesandla noma nge-servo, ukuhambisa i-granite CMM ezungeze izimbazo zayo ukuze ithathe izilinganiso.Inhlangano eyodwa, i-LS Starrett Co., ithole isixazululo esithokozisayo sale nkinga: I-Hollow Granite Technology.
Lobu buchwepheshe busebenzisa amapuleti egwadle aqinile kanye nemishayo ekhiqizwa futhi yahlanganiswa ukuze yakhe amalungu esakhiwo angenalutho.Lezi zakhiwo ezingenalutho zinesisindo njenge-aluminium ngenkathi zigcina izici ezishisayo ze-granite.U-Starrett usebenzisa lobu buchwepheshe kukho kokubili amalungu asekela ibhuloho nebhuloho.Ngendlela efanayo, basebenzisa i-ceramic engenalutho ebhulohweni elikuma-CMM amakhulu kunawo wonke lapho i-granite engenalutho ingasebenzi.
Amabhere.Cishe bonke abakhiqizi be-CMM bashiye ngemuva amasistimu amadala athwala ama-roller, bekhetha amasistimu athwala umoya aphezulu kakhulu.Lawa masistimu awadingi ukuthintana phakathi kwe-bearing ne-bearing surface ngesikhathi sokusetshenziswa, okuholela ekugqokeni okuyiziro.Ukwengeza, ama-air bearings awanazo izingxenye ezinyakazayo, ngakho-ke, akukho msindo noma ukudlidliza.
Nokho, ama-air bearings nawo anomehluko wawo wemvelo.Ngokufanelekile, bheka isistimu esebenzisa i-porous graphite njengento yokuthwala esikhundleni se-aluminium.I-graphite kulawa ma-bearings ivumela umoya ocindezelwe ukuba udlule ngokuqondile ku-porosity yemvelo etholakala ku-graphite, okuholela kungqimba lomoya oluhlakazeke kakhulu endaweni ephethe.Futhi, ungqimba lomoya olukhiqizwa yileli bhodi mncane kakhulu-cishe u-0.0002″.Ngakolunye uhlangothi, amabheringi e-aluminium afakwe ported evamile, ngokuvamile anegebe lomoya phakathi kuka-0.0010″ no-0.0030″.Igebe elincane lomoya liyathandeka ngoba linciphisa ukuthambekela komshini ukugxuma ku-cushion futhi kubangele umshini oqinile, onembile futhi ophindaphindwayo.
Imanuwali vs. DCC.Ukunquma ukuthi uthenge i-CMM eyenziwa ngesandla noma ezenzakalelayo kuqondile.Uma indawo yakho yokukhiqiza eyinhloko igxile ekukhiqizeni, ngokuvamile umshini olawulwa ikhompuyutha oqondile uyinketho yakho ngokuhamba kwesikhathi, nakuba izindleko zokuqala zizoba phezulu.Ama-CMM okwenziwa ngesandla alungile uma ezosetshenziselwa ikakhulukazi umsebenzi wokuhlola we-athikili yokuqala noma kubunjiniyela obuhlehlayo.Uma wenza okuncane kakhulu kwakho kokubili futhi ungafuni ukuthenga imishini emibili, cabanga nge-DCC CMM enamadrayivu e-servo ahlukanisekayo, evumela ukusetshenziswa ngesandla lapho kudingeka.
Isistimu yeDrayivu.Lapho ukhetha i-DCC CMM, bheka umshini ongenawo i-hysteresis (backlash) ohlelweni lokushayela.I-Hysteresis ithinta kabi ukunemba kokuma komshini nokuphindaphinda.Amadrayivu e-friction asebenzisa i-shaft yedrayivu eqondile enebhendi yokushayela enembile, okuholela ku-zero hysteresis kanye nokudlidliza okuncane
Isikhathi sokuthumela: Jan-19-2022