Tshooj 1 Cov qauv txheej txheem ntawm dov bearings
Rolling bearings tsim los ntawm kev zawv zawg bearings, uas nws txoj haujlwm ua haujlwm yog hloov zawv zawg kev sib txhuam nrog dov kev sib txhuam, feem ntau yog tsim los ntawm ob lub nplhaib, ib txheej ntawm dov cov ntsiab lus thiab lub tawb, uas muaj ntau yam, qauv thiab serialized. High mechanical puag pieces. Vim muaj kev ua haujlwm sib txawv ntawm ntau lub tshuab, ntau yam yuav tsum tau muab tso rau pem hauv ntej rau dov bearings nyob rau hauv cov nqe lus ntawm load peev, qauv thiab kev ua tau zoo. Vim li no, dov bearings xav tau ntau yam qauv. Txawm li cas los xij, cov qauv yooj yim tshaj plaws yog tsim los ntawm lub nplhaib sab hauv, lub nplhaib sab nraud, cov ntsiab lus dov thiab tawb.Cov haujlwm ntawm ntau qhov chaw hauv cov kabmob yog:
Rau radial bearings, lub nplhaib sab hauv feem ntau muaj nruj haum nrog lub ncej thiab khiav ua ke nrog cov ncej, thiab lub nplhaib sab nrauv feem ntau tsim cov kev hloov pauv haum nrog lub rooj zaum bearing lossis lub tshuab vaj tsev lub qhov los ua lub luag haujlwm txhawb nqa. Txawm li cas los xij, qee lub sijhawm, lub nplhaib sab nraud kuj tseem khiav, thiab lub nplhaib sab hauv yog tsau los ua kev txhawb nqa, lossis ob qho tib si lub nplhaib puab thiab lub nplhaib sab nraud yog khiav tib lub sijhawm. Rau thrust bearings, nws yog hu ua lub nplhaib ncej uas haum nruj nrog lub ncej thiab txav mus ua ke, thiab nws yog hu ua lub nplhaib lub rooj zaum uas yog nyob rau hauv kev hloov pauv haum nrog lub rooj zaum bearing lossis lub qhov ntawm lub tshuab vaj tse thiab ua lub luag haujlwm txhawb nqa. Cov khoom dov (steel balls, rollers or needle rollers) feem ntau yog sib npaug ntawm ob lub nplhaib los ntawm txoj hlua khi hauv cov kabmob rau dov cov lus tsa suab. Nws cov duab, qhov loj me thiab qhov ntau ncaj qha cuam tshuam rau lub peev xwm thauj khoom thiab kev ua haujlwm ntawm cov kabmob. Ntxiv nrog rau kev sib cais cov dov cov ntsiab lus sib npaug, lub tawb kuj tseem tuaj yeem coj cov dov cov ntsiab lus kom tig thiab txhim kho kev ua haujlwm hauv lubrication ntawm cov kabmob.
Tshooj 2 Kev faib tawm ntawm Rolling Bearings
1. Kev faib tawm los ntawm dov bearing qauv hom
(1) Bearings tau muab faib ua:
1) Radial bearings - feem ntau yog siv rau dov bearings uas dais radial loads, thiab lawv cov nominal kev sib cuag cov ces kaum ntawm 0 mus rau 45. Raws li qhov sib txawv nominal sib cuag lub kaum sab xis, nws yog ntxiv muab faib ua: radial hu bearings - radial bearings. nrog lub kaum sab xis nominal ntawm 0; radial angular contact bearings - radial bearings nrog lub nominal hu lub kaum sab xis ntau dua 0 rau 45.
2) Thrust bearings - feem ntau yog siv rau dov bearings bearings axial loads, thiab lawv cov nominal hu lub kaum sab xis yog ntau tshaj 45 mus rau 90. Raws li lub nominal hu lub kaum sab xis, nws muab faib ua: Axial hu bearings - thrust bearings nrog lub nominal hu lub kaum sab xis ntawm 90 degree; thrust angular contact bearings - thrust bearings nrog lub nominal hu lub kaum sab xis siab dua 45 degree tab sis tsawg dua 90 degree .(2) Bearings raug cais raws li hom dov cov ntsiab lus:
1) Pob bearings - cov khoom dov yog cov pob:
2) Cov menyuam bearings - cov ntsiab lus dov yog rollers. Raws li hom rollers, cov menyuam bearings tau muab faib ua: Cylindrical roller bearings ---- bearings uas nws cov ntsiab lus dov yog cylindrical rollers, qhov piv ntawm qhov ntev mus rau txoj kab uas hla ntawm cylindrical rollers yog tsawg dua lossis sib npaug li 3; koob rau cov menyuam bearings ---- Cov khoom dov yog ib rab koob rau cov kabmob, qhov sib piv ntawm qhov ntev mus rau txoj kab uas hla ntawm rab koob rau cov menyuam yog ntau dua 3, tab sis txoj kab uas hla tsawg dua lossis sib npaug li 5 hli; tapered roller bearing ---- dov caij yog tapered menyuam bearing; spherical roller bearing ib tug los ntawm ib tug Rolling ntsiab yog spherical cov menyuam bearings.
(3) Bearings tuaj yeem muab faib ua:
1) Self-aligning bearing-- txoj kev sib tw yog kheej kheej, uas tuaj yeem hloov mus rau qhov sib txawv ntawm lub kaum sab xis thiab lub kaum sab xis ntawm cov kab axis ntawm ob txoj kev sib tw;
2) Tsis-aligning bearings (nruj bearings) ---- bearings uas tuaj yeem tiv taus qhov offset ntawm axis kab kaum sab xis ntawm cov raceways.
(4) Raws li tus naj npawb ntawm cov kab dov, bearings tau muab faib ua:
1) Ib kab bearings - bearings nrog ib kab ntawm dov cov ntsiab lus;
2) Ob chav kab bearings - bearings nrog ob kab ntawm dov ntsiab;
3) Multi-kab bearings - bearings nrog ntau tshaj ob kab ntawm dov cov ntsiab lus, xws li peb-kab thiab plaub-kab bearings.
(5) Raws li seb puas tuaj yeem sib cais, cov bearings tau muab faib ua:
1) Separable bearings - bearings nrog cov khoom sib cais;
2) Cov kabmob tsis sib cais ---- tom qab kev sib dhos zaum kawg ntawm cov kabmob, cov nplhaib tsis tuaj yeem sib cais ywj pheej ntawm qhov xav tau.
(6) Cov kabmob tuaj yeem muab faib ua ntau hom qauv raws li lawv cov qauv tsim (xws li seb puas muaj qhov txhaws, seb puas muaj lub nplhaib sab hauv thiab sab nraud thiab cov duab ntawm lub ferrule, cov qauv ntawm cov tav, thiab txawm hais tias muaj ib lub tawb, thiab lwm yam).
2. Kev faib tawm raws li qhov loj ntawm dov bearings Bearings tau muab faib ua:
(1) Cov kabmob me me - cov kabmob uas muaj lub npe sab nraud ntawm 26mm lossis tsawg dua;
(2) Cov kabmob me me - cov kabmob uas muaj lub npe sab nraud ntawm 28 txog 55mm;
(3) Cov kabmob me me thiab nruab nrab - cov kabmob uas muaj lub npe sab nraud ntawm 60-115 hli;
(4) Nruab nrab thiab loj bearings - bearings nrog lub nominal txheej kab uas hla ntawm 120-190 hli
(5) Loj bearings - bearings nrog lub nominal txheej txoj kab uas hla ntawm 200-430 hli;
(6) Extra-loj bearings - bearings nrog lub nominal txheej kab ntawm 440mm los yog ntau tshaj.
Tshooj 3 Cov txheej txheem tsim khoom ntawm Rolling Bearings
Vim muaj ntau hom kev sib txawv, hom qauv, qib kam rau ua, kev xav tau, cov khoom siv thiab cov khoom siv ntawm dov bearings, cov txheej txheem tsim tawm tsis zoo ib yam.
1. Cov txheej txheem ntawm cov khoom tseem ceeb ntawm ntau yam bearings:
1. The processing process of the ferrule: The processing of the inner ring and the outer ring of the bearing is different according to the raw material or the blank form. Among them, the process before turning can be divided into the following three types. The whole processing process is: bar or tube (Some bars need to be forged, annealed, and normalized)----turning----heat treatment----grinding----finishing or polishing----parts final inspection---- Anti-rust----storage----(to be assembled>
2. Cov txheej txheem ntawm cov pob steel, kev ua cov pob steel kuj txawv raws li lub xeev ntawm cov khoom siv raw. Ntawm lawv, cov txheej txheem ua ntej kev ntxhov siab lossis polishing tuaj yeem muab faib ua peb hom hauv qab no, thiab cov txheej txheem ua ntej kev kho cua sov tuaj yeem muab faib ua ob hom hauv qab no, tag nrho cov txheej txheem ua haujlwm yog: txias stamping bar lossis hlau (qee qhov bar xav tau lub nplhaib. xuas nrig ntaus thiab annealing tom qab txias stamping)----kev ntxhov siab, sib tsoo ntxhib, sib tsoo mos lossis lub teeb pob---- kho cua sov- --- Sib tsoo nyuaj --Tiav Sib Tsoo--Tiav Sib Tsoo los yog sib tsoo--Kev soj ntsuam zaum kawg pab pawg--Kev tiv thaiv xeb, ntim khoom--Storage
4. Cov txheej txheem txheej txheem ntawm lub tawb Cov txheej txheem ntawm lub tawb tuaj yeem muab faib ua ob pawg hauv qab no raws li tus qauv tsim thiab cov khoom siv raw:
(1) Sheet → txiav → blanking → stamping → shaping thiab finishing → pickling los yog txhaj koob tshuaj tivthaiv blasting los yog hlua teeb → zaum kawg tshuaj xyuas → xeb tiv thaiv, ntim → cia (kom muab sib dhos)
(2) Kev ua cov txheej txheem ntawm cov khoom khib nyiab: Cov txheej txheem ntawm cov khoom khib nyiab txawv raws li cov khoom siv raw lossis cov roughness. Ntawm lawv, nws tuaj yeem muab faib ua plaub yam dawb paug hauv qab no ua ntej tig. Tag nrho cov txheej txheem yog: bar, yeeb nkab khoom, forging, casting---- tsheb sab hauv txoj kab uas hla, txheej txoj kab uas hla, kawg lub ntsej muag, chamfering----drilling (los yog kos duab, tho txawv)----pickling{{ 4}}Kev soj ntsuam zaum kawg---- Los tiv thaiv xeb, ntim khoom----warehousing (yuav tsum tau sib sau ua ke).
Thib ob, kev sib dhos txheej txheem ntawm dov bearings:
Rolling bearing qhov chaw xws li cov nplhaib sab hauv, cov nplhaib sab nraud, cov khoom dov thiab cov tawb, thiab lwm yam, tom qab dhau qhov kev tshuaj xyuas, nkag mus rau hauv lub rooj sib dhos rau kev sib dhos. Cov txheej txheem yog raws li nram no:
Yam khoom demagnetization, tu → puab thiab sab nraud dov
Tshooj 4 Yam ntxwv ntawm Rolling Bearings
Piv nrog rau zawv zawg bearings, dov bearings muaj cov hauv qab no zoo:
1. Kev sib txhuam coefficient ntawm cov kabmob dov yog me dua li cov kabmob zawv zawg, thiab kev sib kis tau zoo yog siab. Feem ntau, cov kev sib txhuam coefficient ntawm zawv zawg bearings yog 0.08-0.12, thaum cov bearings dov tsuas yog 0001-0.005;
2. Rolling bearings tau tiav standardization, serialization thiab generalization, yog haum rau loj ntau lawm thiab muab, thiab yog heev yooj yim mus use thiab tswj;
3. Rolling bearings yog ua los ntawm cov kabmob steel thiab tau txais kev kho cua sov. Yog li ntawd, dov bearings tsis tsuas yog muaj cov cuab yeej siv siab thiab lub neej ua haujlwm ntev, tab sis kuj tuaj yeem txuag tau cov hlau tsis muaj hlau siv hauv kev tsim cov zawv zawg bearings;
4. Qhov kev tshem tawm sab hauv ntawm cov kabmob dov yog qhov me me, thiab kev ua tiav ntawm txhua qhov yog siab, yog li kev khiav ceev yog siab. Nyob rau tib lub sijhawm, qhov rigidity ntawm cov kabmob tuaj yeem nce ntxiv los ntawm kev thauj khoom ua ntej. Qhov no tseem ceeb heev rau precision machinery;
5. Ib co dov bearings tuaj yeem dais radial load thiab axial load tib lub sijhawm, yog li cov qauv ntawm cov kabmob txhawb nqa tuaj yeem yooj yim;
6. Vim muaj kev sib kis tau zoo thiab tsis tshua muaj hluav taws xob tsim ntawm dov bearings, kev noj cov roj lubricating tuaj yeem txo qis, thiab kev tu lub lubrication kuj yooj yim;
7. Rolling bearings tuaj yeem siv tau yooj yim rau uranium hauv txhua qhov kev taw qhia hauv qhov chaw.
Txawm li cas los xij, txhua yam tau muab faib ua ob, thiab dov bearings kuj muaj qee qhov tsis zoo, feem ntau:
1. Lub peev xwm ntawm cov kabmob ntawm cov kabmob dov yog ntau me dua li cov zawv zawg bearings ntawm tib lub ntim, yog li lub radial dimension ntawm dov bearings yog loj. Yog li ntawd, zawv zawg bearings feem ntau siv nyob rau hauv lub sij hawm uas ris hnyav loads thiab yuav tsum tau me me radial qhov ntev thiab compact qauv (xws li internal combustion engine crankshaft bearings);
2. Lub vibration thiab suab nrov ntawm dov bearings yog qhov loj, tshwj xeeb tshaj yog nyob rau lub sijhawm tom qab siv. Yog li ntawd, dov bearings tsis haum rau lub sijhawm uas yuav tsum tau muaj siab precision thiab kev co tsis tso cai. Feem ntau, zawv zawg bearings zoo dua.
3. Rolling bearings yog tshwj xeeb tshaj yog rau cov khoom txawv teb chaws xws li hlau shavings. Thaum cov khoom txawv teb chaws nkag mus rau hauv cov kabmob, nws yuav ua rau muaj kev vibration loj thiab suab nrov, uas yuav ua rau muaj kev puas tsuaj thaum ntxov. Tsis tas li ntawd, dov bearings tseem ua rau muaj kev puas tsuaj thaum ntxov vim cov hlau suav nrog thiab impurities. Txawm hais tias kev puas tsuaj thaum ntxov tsis tshwm sim, lub neej ntawm dov bearings muaj qee qhov txwv. Nyob rau hauv luv luv, lub neej ntawm dov bearings yog luv dua li ntawm zawv zawg bearings.
Txawm li cas los xij, piv nrog zawv zawg bearings, dov bearings muaj lawv tus kheej qhov zoo thiab qhov tsis zoo, thiab txhua tus nyob hauv qee lub sijhawm. Yog li ntawd, ob qho tib si tsis tuaj yeem hloov pauv ib leeg, thiab txhua tus txhim kho nyob rau hauv ib qho kev taw qhia thiab nthuav nws qhov chaw. Txawm li cas los xij, vim qhov zoo tshaj plaws ntawm dov bearings, muaj kev nyiam rau latecomers kom yeej. Tam sim no, dov bearings tau tsim rau hauv hom kev txhawb nqa tseem ceeb ntawm cov tshuab, thiab lawv cov ntawv thov tau dhau los ua ntau dua.