Maberamu a Mpira Odziyimira Payokha Osalala

1. Ma bereangi oyambira

2. Mabearing okhala ndi zisindikizo za rabara mbali zonse ziwiri

Ma bearing oyambira amapezeka ndi bore ya cylindrical kapena tapered bore (taper ratio 1:12). Ma bearing odziyimira okha okhala ndi bore yocheperako amatha kuyikidwa mwachindunji pa diameter ya shaft yocheperako pogwiritsa ntchito nati yotseka. Kapenanso, amatha kuyikidwa mosavuta pa ma shaft ocheperako pogwiritsa ntchito ma adapter sleeves oyenera kapena ma withdrawal sleeves. Kutuluka kwa radial kwa bearing kumathanso kusinthidwa pogwiritsa ntchito adapter sleeve.

Kapangidwe ka mkati mwa ma bearing oyambira odzilungamitsa okha akonzedwa, zomwe zimapangitsa kuti katundu anyamulidwe bwino poyerekeza ndi kapangidwe koyambirira. Zotsatira zake, ma bearing awa amapereka mwayi wogwiritsidwa ntchito kwambiri—kaya kulola bearing yofanana kunyamula katundu wolemera kapena, pansi pa mikhalidwe yosasinthika ya katundu, kukonza kudalirika kwa ntchito ndikuwonjezera nthawi yautumiki.

Ma bearing a mpira odziyimira okha akhoza kukhala ndi zisindikizo zolumikizana mbali zonse ziwiri, monga zisindikizo zamtundu wa 2RS kapena 2RS1. Zisindikizo izi zimapangidwa ndi rabara yopangidwa yosatha yolimbikitsidwa ndi mbale zopyapyala zachitsulo. Ma bearing amakhala ndi mafuta osatha ndipo safuna kukonzedwa. Sayenera kutenthedwa kapena kutsukidwa musanayike.

Miyeso yoyambira ya ma bearing a mpira odziyimira pawokha ikugwirizana ndi ISO 15:1981 ndipo yalembedwa m'matebulo a miyeso.

Ma bearing a mpira odzilungamitsa okha apangidwa kuti agwirizane ndi kusiyana kwa angular pakati pa mphete zamkati ndi zakunja.

Kusakhazikika kwa angular komwe kungaloledwe pansi pa mikhalidwe yabwinobwino yogwirira ntchito kwaperekedwa mu tebulo ili m'munsimu. Ngati mtengo wake waukulu ungagwiritsidwe ntchito zimatengera kapangidwe ka bearing configuration ndi mtundu wa zisindikizo zomwe zagwiritsidwa ntchito.
Kulekerera

Ma bearing a mpira odzilungamitsa okha amapangidwa ndi ma grade okhazikika (abwinobwino). Ma grade olondola monga P6 ndi P5 akupezekanso. Ma grade olekerera amatha kutchulidwa m'matebulo ogwirizana.

Ma bearing a mpira odziyimira okha amaperekedwa ndi radial internal clearance yachibadwa. Ma bearing okhala ndi bore yocheperako amaperekedwa ndi C3 group clearance monga muyezo. Ma bearing okhala ndi internal clearance yayikulu kapena yaying'ono kuposa mtengo wamba amatha kupangidwa malinga ndi zomwe makasitomala akufuna. Ma radial clearance akupezeka m'matebulo ochotsera.

Khola lokhazikika la ma bearing a mpira odzilungamitsa lokha limapangidwa ndi nayiloni 66 yolimbikitsidwa ndi ulusi wagalasi. Zinthuzi zimapereka zabwino monga kusinthasintha bwino, kulemera kopepuka, komanso kudzipaka mafuta. Limatha kugwira ntchito mwachangu komanso kupirira kutentha mpaka +120°C.

Pa maberiyani ogwira ntchito mosalekeza kutentha kwambiri kapena mikhalidwe yovuta, pali makhola achitsulo osindikizidwa kapena makhola amkuwa opangidwa ndi makina. Kuti mudziwe zofunikira pa khola losakhala lachizolowezi, chonde funsani dipatimenti yaukadaulo.

Kuti muwonetsetse kuti ma bearing a mpira ndi ma roller akuyenda bwino, muyenera kugwiritsa ntchito katundu wochepa. Izi zikugwiranso ntchito pa ma bearing a mpira omwe amadzipangira okha. Kupanda kutero, pa liwiro lalikulu, mphamvu zopanda mphamvu zomwe zimagwira ntchito pa mipira ndi khola, pamodzi ndi kukangana kwa mafuta, zitha kusokoneza kwambiri momwe mipira imayendera, zomwe zimapangitsa kuti mipira ndi mipikisano ziyende bwino.

Katundu wocheperako wofunikira akhoza kuyesedwa pogwiritsa ntchito njira iyi:

F_{rm} = k_r \cdot \left( \frac{\gamma \cdot n}{1000} \right)^{2/3} \cdot d_m^{3.3}

Kumene:

· F_{rm}: Kulemera kochepa kwa radial (N)
· k_r: Choyezera chochepa cha katundu
· = 40 pa mndandanda wa mabearing 12 ndi 13
· = 45 ya mabearing a mndandanda wa 22
· = 50 ya mabearing a mndandanda wa 23
· \gamma: Kukhuthala kwa mafuta opaka pa kutentha kwa ntchito (mm²/s)
· n: Liwiro lozungulira (r/min)
· d_m: Avereji ya m'mimba mwake wonyamula = 0.5(d + D) (mm)

Kulemera kwa zigawo zothandizira pamodzi ndi mphamvu zakunja nthawi zambiri kumaposa katundu wocheperako. Ngati sichoncho, katundu wowonjezera ayenera kugwiritsidwa ntchito, monga kuwonjezera mphamvu ya lamba kapena kugwiritsa ntchito njira zina zofanana.

Katundu Wofanana Wofanana Wonyamula

· P = F_r + Y_1 \cdot F_a (kN) when \frac{F_a}{F_r} \leq e
· P = 0.65F_r + Y_2 \cdot F_a (kN) pamene \frac{F_a}{F_r} > e

Mitengo ya Y_1, Y_2, ndi e yalembedwa m'matebulo a miyeso ya bearing.

Katundu Wofanana Wosasinthasintha

P = F_r + Y_0 \cdot F_a \quad \text{(kN)}

Mtengo wa Y_0 waperekedwa m'matebulo a miyeso ya bearing dimension."