Abakhiqizi be-angular ball ball bearing bayaqonda ukuthi ukusebenza kwe-spindle enesivinini esikhulu yamathuluzi omshini wokusika wensimbi we-CNC kuncike ekuthwaleni kokuphotha kanye nokugcotshwa kwayo ngokwezinga elithile.Amathuluzi omshini imboni ethwala impahla yezwe lami ithuthuka ngokushesha, ikhiqiza izinhlobo ezihlukahlukene kusukela kwencane kuye enkulu, ikhwalithi yomkhiqizo kanye nezinga lobuchwepheshe ukusuka kokuphansi kuye phezulu, isikali sembonini ukusuka kokuncane kuye kokukhulu, kanye nesistimu yokukhiqiza eyingcweti enezigaba zemikhiqizo eziphelele kanye nokukhiqizwa okunengqondo. isakhiwo senziwe.Ukubekezelelwa kwama-spindle bearings kunomkhawulo.Zifaneleka ngokukhethekile ukuhlelwa kokuthwala okudinga ukunemba okuphezulu kakhulu kokuqondisa kanye namakhono esivinini.Zifaneleka ngokukhethekile ukuhlelwa kokuthwala ama-shafts wamathuluzi omshini.Ngenxa yokuqina kwayo okuhle, ukunemba okuphezulu, umthamo omkhulu wokuthwala umthwalo kanye nesakhiwo esilula, ama-rolling bearings awasetshenziselwa nje ukuphotha amathuluzi omshini wokusika jikelele, kodwa futhi athandwa ngamathuluzi omshini wokusika isivinini esikhulu.Ngokombono wejubane eliphezulu, ama-angular contact ball bearings kuma-rolling bearings, ama-cylindrical roller bearings awesibili, nama-roller bearings angama-tapered yiwona amabi kakhulu.
Ibhola (okungukuthi, ibhola) le-angular ephethe ibhola elithintana liyazungeza futhi lijikeleze, futhi likhiqiza i-centrifugal force Fc ne-gyro torque Mg.Ngokukhuphuka kwejubane lokuphotha, i-centrifugal force Fc kanye ne-gyro torque Mg izophinde ikhuphuke kakhulu, okuzobangela ukuthi ukuthwala kukhiqize ukucindezeleka okukhulu kokuxhumana, okuzoholela ekwandeni kokungqubuzana kokuthwala, ukunyuka kwezinga lokushisa, ukuncipha kokunemba. nempilo efinyeziwe.Ngakho-ke, ukuze kuthuthukiswe ukusebenza ngesivinini esiphezulu kwalokhu kuthwala, kufanele kwenziwe yonke imizamo yokucindezela ukwanda kwe-Fc yayo ne-Mg.Kusukela kufomula yokubala ye-angular contact ball bearings Fc kanye ne-Mg, kuyaziwa ukuthi ukunciphisa ukuminyana kwezinto zebhola, ububanzi bebhola kanye ne-angle yokuxhumana yebhola kunenzuzo ukunciphisa i-Fc ne-Mg, ngakho manje iphezulu- ama-spindle esivinini ngokuvamile asebenzisa ama-engeli okuxhumana angu-15° noma angu-20° Ama-bearings amabhola amancane.Nokho, ububanzi bebhola abukwazi ukuncishiswa kakhulu.Ngokuyisisekelo, kungaba kuphela u-70% we-diameter yebhola yochungechunge olujwayelekile, ukuze ungenzi buthaka ukuqina kokuthwala.Okubaluleke kakhulu ukufuna ukuthuthukiswa kwezinto zebhola.
Uma kuqhathaniswa nensimbi ene-GCr15, ukuminyana kwe-silicon nitride (Si3N4) ceramics kungamaphesenti angama-41 kuphela okuminyana kwayo.Ibhola elenziwe nge-silicon nitride lilula kakhulu.Ngokwemvelo, amandla e-centrifugal kanye ne-gyro torque ekhiqizwa ngesikhathi sokuzungezisa ngesivinini esikhulu nakho kuncane.abaningi.Ngesikhathi esifanayo, i-elastic modulus nobulukhuni be-silicon nitride ceramics yizikhathi ezingu-1.5 kanye nezikhathi ezingu-2.3 kunensimbi ethwalayo, futhi i-coefficient of thermal expansion ingama-25% kuphela yensimbi enensimbi, engathuthukisa ukuqina nempilo yokuthwala, kodwa futhi Ukuvunyelwa okuhambisanayo kokuthwala kushintsha kancane ngaphansi kwezimo ezihlukene zokuphakama kwezinga lokushisa, futhi umsebenzi unokwethenjelwa.Ngaphezu kwalokho, i-ceramic imelana nokushisa okuphezulu futhi ayinamathele ensimbi.Ngokusobala, i-sphere eyenziwe nge-silicon nitride ceramic ifaneleka kakhulu ukuzungezisa ngesivinini esikhulu.Ukuzijwayeza kubonise ukuthi amabhola e-ceramic amabhola angama-angular angakhuphula isivinini ngo-25% ~ 35% uma kuqhathaniswa namabhodi ebhola ensimbi ahambisanayo, kodwa intengo iphakeme.
Emazweni angaphandle, ama-bearings anensimbi amasongo angaphakathi nangaphandle kanye ne-ceramic rolling elements abizwa ngokuhlanganyela njengama-hybrid bearings.Njengamanje, ama-hybrid bearings anentuthuko entsha: enye iwukuthi izinto ze-ceramic zisetshenziselwe ukwenza ama-roller ama-cylindrical roller bearings, futhi ama-ceramic cylindrical hybrid bearings avele emakethe;enye iwukusebenzisa insimbi engagqwali esikhundleni sokuthwala insimbi ukwenza amasongo angaphakathi nangaphandle okuthwala, ikakhulukazi indandatho yangaphakathi.Njengoba i-coefficient yokwanda okushisayo kwensimbi engagqwali incane ngo-20% kunensimbi ethwalayo, ngokwemvelo, ukwanda kokucindezeleka kokuxhumana okubangelwa ukunwetshwa okushisayo kwendandatho yangaphakathi kuzocindezelwa ngesikhathi sokujikeleza kwesivinini esikhulu.
Isikhathi sokuthumela: Apr-15-2021
