Ndikofunikira kwambiri kufananiza m'mimba mwake wamkati wa bearing ndi shaft ndi m'mimba mwake wakunja ndi housing pamene bearing yayikidwa. Ngati kukwanira kuli komasuka kwambiri, pamwamba pa bearing padzapanga kutsetsereka kofanana, komwe kumatchedwa creep. Kutsekeka kukachitika, kudzawononga pamwamba pa bearing, kuwononga shaft kapena housing, ndipo ufa wosweka udzalowa mu bearing, zomwe zimayambitsa kutentha, kugwedezeka ndi kuwonongeka. Kusokoneza kwakukulu kudzapangitsa kuti m'mimba mwake wakunja wa mphete yakunja ukhale wocheperako kapena m'mimba mwake wamkati wa mphete yamkati, zomwe zimachepetsa kutseguka kwamkati kwa bearing. Kuphatikiza apo, kulondola kwa geometric kwa shaft ndi processing ya chipolopolo kumakhudzanso kulondola koyambirira kwa mphete yoberekera, motero kukhudza magwiridwe antchito a bearing.
1.1 Kusankha Koyenera 1.1.1 Mtundu wa katundu ndi kusankha koyenera zimatsimikiziridwa malinga ndi momwe katundu wonyamula katundu amayendera komanso momwe mphete zamkati ndi zakunja zimayendera, nthawi zambiri zimatanthauza Gome 1. Gome 1 ndi momwe katundu amayendera ndi katundu zimayendera zithunzi ndi mphete yamkati: kutembenuka kolakwika: njira yolunjika yonyamula katundu: mphete yamkati yokhazikika yozungulira mphete yamkati, mphete yakunja katundu wosasunthika IMAGWIRITSA NTCHITO kulowererapo (kulowererapo) mphete yakunja: njira yolunjika yothamangira katundu, ndi mphete yakunja ndi mphete yamkati yozungulira: njira yolunjika yolunjika: njira yolunjika yozungulira katundu, ndi mphete yakunja ndi mphete yamkati yozungulira: njira yolunjika yolunjika: njira yolunjika yolunjika yozungulira mphete yamkati yokhazikika, mphete yakunja yozungulira katundu yomwe ilipo yothamangira yothamanga (kulowererapo) mphete yakunja: AMAGWIRITSA NTCHITO njira yolumikizira (kulowererapo) mphete yamkati: njira yozungulira yozungulira: ndi mphete yamkati yozungulira nthawi yomweyo. 2) Kuyenera koyenera Kusankha koyenera, mawonekedwe a katundu wonyamula katundu, kukula, kutentha, kuyika kwa bere, kuchotsa zinthu zosiyanasiyana. Pamene bere limayikidwa ku chipolopolo choonda ndi shaft yopanda kanthu, kuchuluka kwa kulowererapo kuyenera kukhala kwakukulu kuposa kwa wamba. Chipolopolo cholekanitsidwacho chingasinthe mosavuta mphete yakunja ya chogwirira, kotero mphete yakunja iyenera kugwiritsidwa ntchito mosamala ngati ili yogwirizana bwino. Pankhani ya kugwedezeka kwakukulu, mphete yamkati ndi mphete yakunja ziyenera kukhala ndi mgwirizano wabwino.
Gwirizanani ndi malangizo ambiri, onani tebulo 2, tebulo 3 tebulo 2 centripetal bearing ndi shaft ndi mikhalidwe yoyenera milandu (onani) m'mimba mwake wa axle (mm) spherical roller bearing remark ball bearings cylindrical roller bearing taper roller bearing automatic self-aligning roller bearing cylindrical hole bearing outer ring and shaft rotation load need inner ring on the shaft is easily to move static axle wheels all size g6 precision requirements, Ndi g5, h5, bearing and easier mobile required h6 imapezekanso popanda inner ring is easily to move the shaft tension wheel h6 inner ring spinning frame, chingwe chozungulira kapena malangizo a variable load pansi pa easier load 0.06 Cr (1) load variable load appliances, pump, blower, truck, precision machine machine, machine tool under 18 -- Js5 accuracy if necessary by the level of the p5, inner diameter using precision ball bearing under 18 mm h5. Katundu wamba (0.06~0.13) Cr (1) Gawo la turbine yapakati ndi yayikulu ya injini, pampu, spindle ya injini, chipangizo chotumizira giya, makina opangira matabwa pansi pa 18 -- N6 mabearing ozungulira mzere umodzi ndi mabearing a mpira wozungulira mzere umodzi angagwiritsidwe ntchito k6, M6 m'malo mwa K5, M5. P6 140-200 40-65 R6 200-280 100-140 N6 -- 200-400 140-280 P6 -- 280-500 R6 -- Magalimoto a sitima ndi mafakitale opitilira 500 R7 katundu wolemera (woposa 0.13Cr (1)) eni magalimoto amagetsi injini yamagetsi yomanga makina ophwanyira -- 50-140 50-100 N6 Kufunika ndikokulirapo kuposa kutseguka kwa bearing - p6, 140-200, 100-140 - oposa 200, 140-200 r6 -- 200-500 r7 yokha imanyamula katundu wa axial wa zigawo za bearing yomanga pogwiritsa ntchito malo onse miyeso Js6 (j6) - tebulo 3 bearing yapakati yokhala ndi dzenje la chipolopolo momwe zinthu zilili (onani) kayendedwe ka dzenje lakunja kulekerera mtundu wa kalasi chizindikiro chonse cha dzenje la chipolopolo bearing yakunja yozungulira mphete yolemera galimoto gudumu lozungulira mabearing (kireni) gudumu la msewu woyenda P7 mphete yakunja yopita ku mbali yozungulira.
Katundu wamba, gudumu lagalimoto lolemera (mabeya a mpira) shaker N7 katundu wopepuka kapena wosintha katundu lamba wonyamula katundu tension pulley gudumu, pulley M7 osati wolandila katundu wolunjika katundu waukulu katundu wokhudza trolley katundu kapena katundu wopepuka wa pampu crankshaft spindle mota yayikulu K7 mphete yakunja kwenikweni osati ku mbali ya axial ya mphete yakunja sikufunika ku mbali ya axial mtundu wa integral mabowo a chipolopolo kapena mtundu wolekanitsa dzenje la chipolopolo katundu wamba kapena katundu wopepuka JS7 (J7) mphete yakunja idzatha kusunthidwa kupita ku axial ikufunika mphete yakunja kupita ku mbali ya axial ya mphete yamkati yozungulira katundu wamitundu yonse ya katundu wonyamula gawo la bokosi lonyamula lonse la galimoto ya sitima mphete yakunja ya H7 kupita ku mbali ya axial mosavuta - katundu wamba kapena katundu wopepuka konzani kulowetsa shaft ya chipolopolo ndi chonyamula H8 bwalo lonse mu katundu wamba, kutentha kwakukulu kwa chowumitsira pepala G7 katundu wopepuka, makamaka amafunika kupukuta bwino kuzungulira kwa spindle kumbuyo kwa mpira wonyamula compressor ya centrifugal yothamanga kwambiri yokhazikika bearing JS6 (J6) mphete yakunja kupita ku mbali ya axial - osalunjika katundu kumbuyo kwa mpira wonyamula spindle grinding high-speed centrifugal compressor K6 Mphete yakunja yokhala ndi mbali yokhazikika yokhazikika mbali yolunjika ya katundu, makamaka, yogwiritsidwa ntchito pa kuchuluka kwa kusokoneza ndi zazikulu kuposa K, zofunikira zapadera pansi pa mkhalidwe wolondola kwambiri, Zoyenera zazing'ono ziyenera kugwiritsidwanso ntchito pa cholinga chilichonse.
Kuzungulira kwa mphete yamkati kumasiyana ndi katundu, makamaka kufunika kozungulira molondola komanso kulimba kwakukulu kwa spindle ya zida zamakina ndi mphete yakunja ya M6 kapena N6 yozungulira yokhazikika mbali ya axial kuti igwire ntchito popanda phokoso la mphete yakunja ya H6 kupita mbali ya axial - 3), kulondola kwa mzere, hood, ndi mzere wozungulira pamwamba, kulondola kwa hood sikwabwino, bearing yomwe yakhudzidwa ndi izi sikungawonetse magwiridwe antchito ofunikira. Mwachitsanzo, kuyika gawo la phewa ngati kulondola sikwabwino, mphete zamkati ndi zakunja zidzapendekeka. Kuphatikiza pa katundu wonyamula, kuphatikiza ndi katundu wokhazikika kumapeto, moyo wotopa wa bearing udzachepa, ndipo moyipa kwambiri, udzakhala chifukwa cha kuwonongeka kwa khola ndi kuwotcha. Kuphatikiza apo, kusintha kwa chipolopolo chifukwa cha katundu wakunja sikwakukulu. Ndikofunikira kuthandizira mokwanira kulimba kwa bearing. Kulimba kukakhala kwakukulu, phokoso ndi kugawa kwa katundu wa bearing kumakhala bwino.
Kawirikawiri, makina osinthira kapena makina oboola bwino amatha kugwiritsidwa ntchito. Komabe, pazochitika zomwe zimakhala ndi zofunikira kwambiri pakuzungulira, phokoso komanso momwe katundu amagwirira ntchito ndi wovuta kwambiri, kugaya komaliza kuyenera kugwiritsidwa ntchito. Ngati ma bearing oposa awiri akonzedwa m'nyumba yonse, malo olumikizirana a nyumbayo ayenera kupangidwa kuti azitha kupangidwa ndi kubowoledwa. Kawirikawiri, shaft, kulondola kwa nyumbayo ndi kumaliza kwake kungakhale monga momwe zasonyezedwera mu Table 4 pansipa. Gome 4 Kulondola kwa Axis ndi Nyumba ndi Kutha kwa Mabearing - Gulu la AXIS lozungulira kuzungulira - kalasi 0, kalasi 6, kalasi 5, Gulu 4 IT3 ~ IT42 2IT3 ~ IT42 2 IT4 ~ IT52 2IT2 ~ IT42 2 Kulekerera kwa Cylindricity - kalasi 0, kalasi 6, kalasi 5, kalasi 4 IT3 ~ IT42 2IT2 ~ IT32 2 IT4 ~ IT52 2IT2 ~ IT32 2 Kulekerera kwa mapewa - kalasi 0, kalasi 6, kalasi 5, kalasi 4 IT3IT3 IT3~IT4IT3 Kumaliza kofanana pamwamba Rmax bearing yaying'ono bearing yayikulu 3.2 S6.3s 6.3 S12.5s.
Chomwe chimatchedwa kuti internal clearance ya bearing chimatanthauza kuchuluka kwa kayendedwe pamene mphete yamkati kapena yakunja ya bearing yakhazikika bearing isanayikidwe pa shaft kapena bokosi la bearing, kenako mbali yosakhazikika imasunthidwa mozungulira kapena mozungulira. Malinga ndi njira yoyendetsera, imatha kugawidwa m'magawo awiri: radial clearance ndi axial clearance. Poyesa clearance yamkati ya bearing, kuti mtengo woyesedwa ukhale wokhazikika, katundu woyeserera nthawi zambiri amagwiritsidwa ntchito pa mphete. Chifukwa chake, mtengo woyeserera ndi waukulu kuposa mtengo weniweni wa clearance, ndiko kuti, kuchuluka kowonjezera kwa elastic deformation komwe kumachitika chifukwa chogwiritsa ntchito test load. Mtengo weniweni wa bearing internal clearance ukuwonetsedwa mu Table 4.5. Kuwonjezeka kwa clearance komwe kumachitika chifukwa cha elastic deformation yomwe ili pamwambapa kumakonzedwa. Kusinthika kwa elastic kwa roller bearings n'kochepa. Gome 4.5 kuti muchotse mphamvu ya radial clearance load correction (deep groove ball bearing) mayunitsi: um nominal bearing model diameter d (mm) (N) clearance test load correction over to C2 C3 C4 C510 ordinary (kuphatikiza) 18 24.549 147 3 ~ 4 4 ~ 5 6 ~ 8 45 8 4 6 9 Epulo 9 Epulo 6 92.2 kusankha kwa bearing clearance berear running clearance, chifukwa cha bearing fit ndi kusiyana kwa kutentha pazifukwa zamkati ndi zakunja, nthawi zambiri kumakhala kochepa kuposa clearance yoyamba. clearance yogwirira ntchito imagwirizana kwambiri ndi moyo wa bearing, kukwera kwa kutentha, kugwedezeka ndi phokoso, kotero iyenera kukhazikitsidwa pamalo abwino kwambiri.
Potengera chiphunzitso, pamene bearing ikugwira ntchito, ndi clearance yocheperako pang'ono yothamanga, moyo wa bearing ndi wapamwamba kwambiri. Koma n'zovuta kwambiri kusunga clearance yabwino kwambiri iyi. Ndi kusintha kwa mikhalidwe ya ntchito, clearance yocheperako ya bearing idzawonjezeka mofanana, zomwe zingapangitse kuti moyo wa bearing uchepe kwambiri kapena kupanga kutentha. Chifukwa chake, clearance yoyamba ya bearing nthawi zambiri imakhala yayikulu pang'ono kuposa zero. CHITHUNZI 2 Kusintha kwa coverage ya radial ya bearing 2.3 Njira zosankhira Bearing clearance Potengera chiphunzitso, moyo wa bearing umakulitsidwa pamene pali clearance yocheperako pang'ono yogwira ntchito pansi pa mikhalidwe yotetezeka yogwira ntchito. Koma m'machitidwe, zimakhala zovuta kwambiri kusunga mkhalidwe wabwino kwambiri uwu. Mikhalidwe ina ya ntchito ikasintha, clearance yocheperako imawonjezeka, zomwe zimapangitsa kuti moyo wa bearing kapena kutentha uchepe kwambiri. Chifukwa chake, pamene clearance yoyamba nthawi zambiri imasankhidwa, clearance yogwira ntchito imafunika kukhala yayikulu pang'ono kuposa zero.
Pa mabearing pansi pa mikhalidwe yabwinobwino, mgwirizano wa katundu wamba udzagwiritsidwa ntchito. Ngati liwiro ndi kutentha zili bwino, chilolezo chofanana chiyenera kusankhidwa kuti chipeze chilolezo choyenera chogwirira ntchito. Gome 6 chilolezo chachizolowezi mwachitsanzo pogwiritsa ntchito mikhalidwe yoyenera chilolezo pansi pa katundu wolemera, katundu wokhudzana ndi kugunda, kusokonezedwa ndi kuchuluka kwa axle ya sitima C3 kugwedezeka kwa chinsalu C3 ndi C4 sikungakwanitse katundu wolunjika, mkati ndi kunja kwa bwalo la thirakitala ya C4 gwiritsani ntchito mota yoyenda yokha, makina ochepetsera kapena C4 okhala ndi pepala lotenthetsera, makina owumitsira C3 ndi C4 mill roller kun C3 kuti muchepetse kugwedezeka kozungulira ndi phokoso la micro-motor C2 clearance kusintha ndikuwongolera kugwedezeka kwa shaft NTN spindle (double row cylindrical roller bearing) C9NA, C0NA.
Nthawi yotumizira: Julayi-30-2020