Izinto zokwakha ezizinzile nge-thermal.Qinisekisa ukuba amalungu aphambili okwakhiwa komatshini aqukethe izinto ezingenakuchaphazeleka kakhulu kwiinguqu zeqondo lokushisa.Cinga ibhulorho (umatshini we-X-axis), ibhuloho ixhasa, isikhokelo sikaloliwe (umatshini we-Y-axis), iibheringi kunye nebar ye-Z-axis yomatshini.Ezi nxalenye zichaphazela ngokuthe ngqo imilinganiselo yomatshini kunye nokuchaneka kweentshukumo, kwaye zenza amacandelo omqolo weCMM.
Iinkampani ezininzi zenza la macandelo nge-aluminiyam ngenxa yobunzima bayo obulula, ubuchule kunye neendleko eziphantsi.Nangona kunjalo, izixhobo ezifana negranite okanye i-ceramic zingcono kakhulu kwii-CMM ngenxa yokuzinza kwazo kwe-thermal.Ukongeza kwinto yokuba i-aluminiyam iyanda ngokuphindwe kane ngaphezu kwegranite, igranite ineempawu eziphezulu zokungcangcazela kwaye inokubonelela ngomphezulu ogqwesileyo womphezulu apho iibheringi zinokuhamba khona.Igranite, enyanisweni, ibe ngumgangatho owamkelwa ngokubanzi wokulinganisa iminyaka.
Kwii-CMM, nangona kunjalo, igranite ine-drawback enye-inzima.Ingxaki kukuba ukwazi, nokuba kungesandla okanye nge-servo, ukuhambisa i-granite CMM ijikeleze kwii-axes zayo ukuthatha imilinganiselo.Omnye umbutho, i-LS Starrett Co., ifumene isisombululo esinomdla kule ngxaki: I-Hollow Granite Technology.
Le teknoloji isebenzisa iipleyiti zegranite eziqinileyo kunye nemiqadi eyenziwe kwaye idityaniswe ukwenza amalungu angenanto.Ezi zakhiwo zinomgongxo zinobunzima obufana ne-aluminiyam ngelixa zigcina iimpawu zobushushu zegranite.UStarrett usebenzisa le teknoloji kuzo zombini ibhulorho kunye namalungu enkxaso yebhulorho.Ngendlela efanayo, basebenzisa i-ceramic engenanto kwibhulorho kweyona CMM inkulu xa igranite ingenamsebenzi.
Iibheringi.Phantse bonke abavelisi be-CMM baye bashiya ii-roller-bearing systems ezidala ngasemva, bekhetha iinkqubo ezikude eziphezulu zomoya.Ezi nkqubo zifuna unxibelelwano phakathi kwe-bearing kunye ne-bearing surface ngexesha lokusetyenziswa, okubangela ukunxitywa kwe-zero.Ukongezelela, iibheringi zomoya azinamalungu ashukumayo kwaye, ngoko ke, akukho ngxolo okanye ukungcangcazela.
Nangona kunjalo, iibheringi zomoya zikwanomohluko wazo wendalo.Ngokufanelekileyo, khangela inkqubo esebenzisa i-graphite ene-porous njengento yokuthwala endaweni ye-aluminium.Igraphite kwezi bheringi ivumela umoya ocinezelweyo ukuba udlule ngokuthe ngqo kwi-porosity yendalo ekhoyo kwigraphite, okukhokelela kumaleko womoya osasazeke ngokulinganayo kumhlaba wokuthwala.Kwakhona, umaleko womoya oveliswa yile mveliso ubhityile kakhulu-malunga ne-0.0002 ″.Ngakolunye uhlangothi, iibheringi ze-aluminiyam eziqhelekileyo, zihlala zinesithuba somoya phakathi kwe-0.0010" kunye ne-0.0030".Umsantsa omncinci womoya uyakhethwa kuba unciphisa utyekelo lomatshini lokugxumeka kwi-cushion yomoya kwaye kukhokelela kumatshini ongqongqo ngakumbi, ochanekileyo nophindaphindwayo.
Incwadi vs. DCC.Ukumisela ukuba uthenge i-CMM yesandla okanye i-automated ilula kakhulu.Ukuba indawo yakho yokuvelisa eyona nto iphambili ijolise kwimveliso, ke ngokuqhelekileyo umatshini olawulwa yikhompyutha ngokuthe ngqo lolona khetho lufanelekileyo ekuhambeni kwexesha, nangona iindleko zokuqala ziya kuba phezulu.Ii-CMM zeManuwali zifanelekile ukuba ziza kusetyenziswa ngokuyintloko kumsebenzi wokuhlola inqaku lokuqala okanye kubunjineli obubuyisela umva.Ukuba wenza kancinane kokubini kwaye awufuni ukuthenga oomatshini ababini, qwalasela i-DCC CMM ene-disengagable servo drives, evumela ukusetyenziswa ngesandla xa kuyimfuneko.
Inkqubo yokuqhuba.Xa ukhetha i-DCC CMM, khangela umatshini ongenalo i-hysteresis (backlash) kwinkqubo yokuqhuba.I-Hysteresis ichaphazela kakubi ukuchaneka komatshini kunye nokuphindaphinda.Iidrive zefriction zisebenzisa ishafti yedrive ethe ngqo enebhendi yokuqhuba echanekileyo, ekhokelela kwi-zero hysteresis kunye nokungcangcazela okuncinci.
Ixesha lokuposa: Jan-19-2022