Dab tsi yog daim ntawv thov ntawm high-speed angular hu rau pob bearings?

Angular hu rau pob bearing manufacturers nkag siab tias qhov kev ua tau zoo ntawm high-ceev spindle ntawm CNC hlau txiav tshuab cov cuab yeej nyob ntawm tus spindle bearing thiab nws lubrication mus rau ib tug ntau npaum li cas.Tshuab cuab tam bearings kuv lub teb chaws bearing kev lag luam yog tsim sai heev, bearing ntau yam los ntawm me me mus rau loj, cov khoom zoo thiab cov kev kawm theem ntawm qis mus rau siab, kev lag luam nplai los ntawm me me mus rau loj, thiab ib tug kev ntau lawm system nrog ib tug ua tiav cov khoom pawg thiab tsim nyog ntau lawm layout tau tsim.Lub tolerances ntawm spindle bearings yog txwv.Lawv yog tshwj xeeb tshaj yog haum rau bearing kev npaj uas yuav tsum tau heev steering raug thiab ceev muaj peev xwm.Lawv yog tshwj xeeb tshaj yog haum rau cov kabmob kev npaj ntawm lub shafts ntawm lub tshuab cuab yeej.Vim nws zoo rigidity, siab precision, siab load-bearing muaj peev xwm thiab kuj yooj yim qauv, dov bearings tsis yog tsuas yog siv rau spindles ntawm cov cuab yeej txiav tshuab, tab sis kuj nyiam los ntawm high-speed txiav tshuab cuab yeej.Los ntawm qhov kev xav ntawm kev kub ceev, angular hu rau pob bearings hauv dov bearings, cylindrical roller bearings yog qhov thib ob, thiab tapered roller bearings yog qhov phem tshaj.

Lub pob (uas yog, lub pob) ntawm lub angular contact pob bearing revolves thiab rotates, thiab nws generates centrifugal force Fc thiab gyro torque Mg.Nrog rau qhov nce ntawm spindle ceev, lub centrifugal quab yuam Fc thiab lub gyro torque Mg kuj yuav nce sharply, uas yuav ua rau cov bearings tsim ib tug loj kev sib cuag kev nyuaj siab, uas yuav ua rau kom muaj kev sib txhuam ntawm cov kabmob, nce kub nce, txo qhov raug. thiab ua neej luv.Yog li ntawd, txhawm rau txhim kho qhov kev ua tau zoo ntawm cov kabmob no, txhua txoj kev siv zog yuav tsum tau ua kom muaj kev nce qib FC thiab MG.Los ntawm kev suav cov mis ntawm angular hu rau pob bearings Fc thiab Mg, nws paub tias txo qhov ntom ntawm cov khoom siv pob, txoj kab uas hla ntawm lub pob thiab lub kaum sab xis ntawm lub pob tau txais txiaj ntsig los txo Fc thiab Mg, yog li tam sim no siab- ceev spindles feem ntau siv cov ces kaum ntawm 15 ° los yog 20 ° Ntawm cov pob me me ntawm txoj kab uas hla.Txawm li cas los xij, lub pob taub tsis tuaj yeem txo qis ntau dhau.Yeej, nws tsuas tuaj yeem yog 70% ntawm tus qauv series pob kab, thiaj li tsis ua kom tsis muaj zog ntawm cov kabmob.Qhov tseem ceeb tshaj plaws yog nrhiav kev txhim kho cov khoom ntawm lub pob.

Piv nrog GCr15 bearing steel, qhov ntom ntawm silicon nitride (Si3N4) ceramics tsuas yog 41% ntawm nws qhov ntom.Lub pob ua los ntawm silicon nitride yog qhov sib dua.Lawm, lub zog centrifugal thiab gyro torque generated thaum lub sij hawm high-speed tig kuj me me.ntau.Nyob rau tib lub sijhawm, qhov elastic modulus thiab hardness ntawm silicon nitride ceramics yog 1.5 npaug thiab 2.3 npaug ntawm cov kabmob steel, thiab cov coefficient ntawm thermal expansion tsuas yog 25% ntawm cov kabmob steel, uas tuaj yeem txhim kho qhov nruj thiab lub neej ntawm cov kabmob, tab sis kuj Qhov sib txuam clearance ntawm cov kabmob hloov me ntsis raws li qhov sib txawv ntawm qhov kub thiab txias, thiab kev ua haujlwm yog txhim khu kev qha.Tsis tas li ntawd, cov ceramic yog resistant rau kub kub thiab tsis lo rau cov hlau.Pom tseeb, tus kheej kheej ua los ntawm silicon nitride ceramic yog qhov tsim nyog rau kev sib hloov ceev.Kev xyaum tau pom tias cov pob zeb ceramic pob angular hu rau pob bearings tuaj yeem nce qhov ceev ntawm 25% ~ 35% piv nrog cov khoom sib txuas steel pob bearings, tab sis tus nqi siab dua.

Nyob rau hauv txawv teb chaws, bearings nrog steel sab hauv thiab sab rings thiab ceramic dov ntsiab yog sau ua ke hu ua hybrid bearings.Tam sim no, hybrid bearings muaj kev txhim kho tshiab: ib qho yog cov ntaub ntawv ceramic tau siv los ua cov cylindrical roller bearings, thiab ceramic cylindrical hybrid bearings tau tshwm sim hauv khw;lwm qhov yog siv cov hlau tsis muaj steel tsis siv cov kabmob steel los ua cov nplhaib puab thiab sab nraud ntawm cov kabmob, tshwj xeeb tshaj yog cov nplhaib puab.Txij li thaum lub coefficient ntawm thermal expansion ntawm stainless hlau yog 20% ​​me dua li cov kabmob steel, ib txwm, qhov nce ntawm kev sib cuag kev nyuaj siab tshwm sim los ntawm thermal expansion ntawm lub nplhaib puab yuav raug suppressed thaum lub sij hawm kev kub ceev.


Post lub sij hawm: Apr-15-2021