E 'ngoe ea likarolo tsa mantlha tsa mochini oa spindle le turntable e bapala karolo ea makhaola-khang ts'ebetsong ea sesebelisoa sa mochini.

Spindlebehang

E le karolo ea bohlokoa ea sesebelisoa sa mochine, ts'ebetso ea spindle e tla ama ka ho toba ho nepahala ha ho potoloha, lebelo, ho tiea, ho phahama ha mocheso, lerata le likarolo tse ling tsa mochine oa mochine, oo le oona o tla ama boleng ba ts'ebetso ea workpiece, joalo-joalo. joalo ka ho nepahala ha karolo, ho ba mahoashe holimo le matšoao a mang. Ka hona, bakeng sa ho boloka bokhoni bo botle ba ho etsa mochini oa lisebelisoa tsa mochini, li-bearings tse sebetsang hantle li tlameha ho sebelisoa. Ho nepahala ha li-bearings tse sebelisoang ho li-spindle tsa lisebelisoa tsa mochini e lokela ho ba ISO P5 kapa ka holimo (P5 kapa P4 ke limaraka tsa ho nepahala ha ISO, hangata P0, P6, P5, P4, P2 ho tloha tlase ho ea holimo), le bakeng sa lisebelisoa tsa mochini oa CNC tse lebelo haholo, machining. litsi, joalo-joalo , Tšehetso ea spindle ea lisebelisoa tsa mochini o nepahetseng haholo e hloka ho sebelisa ISO P4 kapa ka holimo ho nepahala; li-spindle bearings li kenyelletsa li-angular contact ball bearings, li-roller bearings tse tapered, le li-cylindrical roller bearings.

1. Ho nepahalali-angular ball bearings

Har'a mefuta e boletsoeng ka holimo ea li-bearings, ho nepahala ha li-angular ball bearings (bona setšoantšo sa 2) ke tsona tse sebelisoang ka ho fetisisa. Kaofela rea ​​tseba hore likarolo tse bilikang tsa li-angular contact ball bearings ke libolo; hobane ke ntlha ea ho kopana (e fapaneng le ho kopana ha line ea li-roller bearings), e ka fana ka lebelo le phahameng, tlhahiso e tlaase ea mocheso le ho potoloha ho nepahala ho phahameng. Lits'ebetsong tse ling tsa ultra-high-speed spindle, li-bearings tsa lebasetere tse nang le libolo tsa ceramic (hangata Si3N4 kapa Al2O3) le tsona li sebelisoa. Ha ho bapisoa le libolo tsa tšepe tse thata ka ho feletseng, litšoaneleho tsa lisebelisoa tsa bolo ea ceramic li fana ka li-bearings tsa ceramic tse nang le boima bo phahameng, lebelo le phahameng, ho hanyetsa mocheso o phahameng, le bophelo bo bolelele, e le ho finyella litlhoko tsa bareki ba phahameng bakeng sa lihlahisoa tse nang le lisebelisoa tsa mochine.

2. Ho nepahaladibering rolara tapered

Lits'ebetsong tse ling tsa lisebelisoa tsa mochini tse nang le meroalo e boima le litlhoko tse itseng tsa lebelo-joalo ka ho sila ha forgings, mochini o phetholang mohala oa liphaephe tsa peterole, lithapo tse boima le metjhini ea ho sila, joalo-joalo, ho khetha li-roller bearings tse nepahetseng ke tharollo e nepahetseng. Hobane li-roller tsa "tapered roller bearing" li entsoe ka mohala, li ka fana ka boima bo phahameng le boima ba mojaro bakeng sa shaft e kholo; ho phaella moo, tapered rolara behang ke e hloekileng rolling behang moralo, e ka fokotsa ho beha tshebetso hantle haholo. Torque le mocheso ho netefatsa lebelo le ho nepahala ha spindle. Kaha li-bearings tsa tapered li ka fetola preload ea axial (ho hlaka) nakong ea ts'ebetso ea ho kenya, sena se lumella bareki ho ntlafatsa hantle phetoho ea tumello ea ho jara nakong ea bophelo bohle ba ho kenya.

3. Precision cylindrical rolara libering

Tšebelisong ea li-spindle tsa lisebelisoa tsa mochini, ho sebelisoa li-bearings tsa cylindrical precision cylindrical roller, hangata li kopantsoe le li-bearings tsa li-angular kapa li-thrust bearings. Mofuta ona oa ho jara o ka mamella meroalo e meholo ea radial mme oa lumella lebelo le phahameng. Mela e 'meli ea li-roller ka ho beha li hlophisitsoe ka mokhoa o tšekaletseng,' me maqhubu a ho feto-fetoha nakong ea ho potoloha a phahame haholo ho feta a mela e le 'ngoe,' me amplitude e fokotsehile ka 60% ho ea ho 70%. Mofuta ona oa ho jara hangata o na le mefuta e 'meli: NN30, NN30K li-bearings tse peli tse nang le likhopo ka lesale la ka hare le lesale la ka ntle le arohaneng; NNU49, NNU49K tse peli tsa letoto la li-bearings tse nang le likhopo ka lesale la ka ntle le lesale la ka hare le arohaneng, tseo har'a tsona NN30K le NNU49K series The internal ring is the tapered hole (taper 1:12), e tsamaellanang le koranta e tapered ea shaft e kholo. Reng e ka hare e ka sisinyeha ka axially ho atolosa lesale la ka hare, e le hore sebaka sa ho beleha se ka fokotsoa kapa se tiisetsoe pele ho bea (negative clearance state). Li-bearings tse nang le li-cylindrical bores hangata li chesoa, ho sebelisoa tšitiso e loketseng ho fokotsa ho hlaka, kapa ho tiisa pele. Bakeng sa li-bearings tsa NNU49 tse nang le selikalikoe sa ka hare se arohaneng, tsela ea peiso e atisa ho sebetsoa ka mor'a hore selikalikoe se ka hare se kenngoe ka shaft e kholo ho ntlafatsa ho nepahala ha ho potoloha ha shaft e kholo.