Mabearing a Tapered Roller

Ma bereki ozungulira opindika amagawidwa m'magulu atatu:

· Mzere umodzi

· Mizere iwiri

· Mizere inayi

Magawo akuluakulu a ma roller bearings opindika akonzedwa bwino, zomwe zawonjezera chiwerengero cha ma roller ndi kutalika kwawo kogwira ntchito. Kapangidwe kabwino ka ma roller ndi misewu ya raceways kamathandizira kwambiri kukhudzana kwa geometric, kugawa kwa kupsinjika, komanso kupanga filimu yamafuta, zomwe zimapangitsa kuti ma roller mayendedwe azikhala bwino. Chifukwa chake, poyerekeza ndi mitundu yakale ya kukula komweko, ma bearings awa amapereka mphamvu zambiri zonyamula katundu komanso moyo wautali wautumiki.

Maberiya ozungulira okhala ndi mizere iwiri amatha kupirira katundu wophatikizana wa radial ndi axial (makamaka radial) komanso katundu wa axial wa bidirectional. Chopachika chimayikidwa pakati pa mphete ziwiri zamkati, zomwe zimathandiza kusintha malo ndi kugawa katundu mofanana mwa kusintha makulidwe a spacer. Maberiya awa ndi oyenera kugwiritsidwa ntchito pa liwiro lapakati mpaka lotsika.

Mabearings a roller okhala ndi mzere umodzi amapezeka mu mndandanda wa metric ndi inchi, onse amagwiritsidwa ntchito kwambiri.

· Mabearing a Metric series akugwirizana ndi ISO 355:1977.

· Mabearings okhala ndi prefix FJ akutsatira AFBMA Standard 19.1.

Ma berear a roller opangidwa ndi tapered series akutsatira muyezo wa AFBMA 19 (1974).

Kusalingana kwakukulu komwe kungaloledwe pakati pa mphete zamkati ndi zakunja za ma bearing a roller okhala ndi mzere umodzi ndi mphindi zitatu. Chifukwa chake, panthawi yokhazikitsa, kukhazikika kwamphamvu pakati pa bearing bore ndi housing bore kuyenera kutsimikizika. Kupanda kutero, nthawi yogwira ntchito ya bearing bore ikhoza kusokonekera.

Pa mabearing a roller opindika okhala ndi dzina lomwelo, mphete zamkati (zokhala ndi ma roller ndi ma cage assemblies) kapena mphete zakunja zimatha kusinthana. Pambuyo posinthana zigawo zamkati kapena zakunja, kukula konse kwa bearing T kuyenera kukhala mkati mwa malire a kulolerana.

· Mabeya Oyezera:
Mabearings ozungulira okhala ndi tapered roller amapangidwa ndi kulekerera kwabwinobwino. Zogulitsa zokhala ndi magulu olekerera P6X, P6, P5, P4, ndi P2 ziliponso. Mabearings okhala ndi kulekerera kwa P5 kapena kupitirira apo amagwiritsidwa ntchito makamaka pa ma spindles a zida zamakina. Kulekerera kwa miyeso ya Chamfer kumatsatira ISO 582:1979. Mabearings a FJ series nthawi zambiri amapangidwa kuti agwirizane ndi kulekerera kwa P6X, ndipo miyeso ya chamfer imatsatira kulekerera kwa chamfer ya inchi series.

· Mabeya a Inchi:
Ma bereji ozungulira okhala ndi ma inchi ozungulira opangidwa ndi ma tapered roller amapangidwa ndi kulekerera kwabwinobwino. Zinthu zokhala ndi magulu olekerera CL2, CL3, CL0, ndi CL00 zimapezeka mukapempha.

Mpata wamkati mwa mabearing a roller okhala ndi mzere umodzi umakhazikitsidwa pokhapokha atayikidwa ndi kusinthidwa motsutsana ndi bearing yolunjika. Mpata wa radial wa mabearing a roller okhala ndi mzere umodzi umatsatira mfundo zomwe zaperekedwa patebulo pansipa.

Makhola a mabearing ozungulira opindika nthawi zambiri amapangidwa ndi chitsulo chapamwamba kwambiri. Pa mabearing akuluakulu, makhola amkuwa opangidwa ndi makina amagwiritsidwa ntchito. Pa ntchito zapadera, makhola 66 a nayiloni obayidwa angagwiritsidwe ntchito.

Pofuna kupewa kutsetsereka kowononga pakati pa ma rollers ndi ma raceways chifukwa cha mphamvu zopanda mphamvu komanso kukangana kwa mafuta panthawi yogwira ntchito mwachangu, katundu wocheperako wa radial uyenera kugwiritsidwa ntchito. Izi zitha kuyerekezeredwa pogwiritsa ntchito njira iyi:

F_{rm} = 0.02C

Kumene:

· F_{rm}: Kulemera kochepa kwa radial (N)

· C: Kuyesa koyambira kwa mphamvu (N)

Katundu Wofanana Wosinthasintha

· Pamene \frac{F_a}{F_r} \leq e:

P = F_r \quad \text{(kN)}

· Pamene \frac{F_a}{F_r} > e:

P = 0.4F_r + Y F_a \quad \text{(kN)}

Kumene:

· e ndi Y zimaperekedwa m'matebulo operekera zizindikiro.

Powerengera katundu wofanana ndi mphamvu, mphamvu ya gawo la axial yomwe imapangidwa pansi pa katundu wa radial iyenera kuganiziridwa. Mafomula omwe ali patsamba lotsatira amakhudza makonzedwe osiyanasiyana oyika ndi mikhalidwe ya katundu. Mafomulawa amagwira ntchito pokhapokha ngati ma bearing asinthidwa kukhala zero clearance popanda kuyika kale.

Mu mawonekedwe omwe akuwonetsedwa, Bearing A nthawi zonse imanyamula katundu wa radial F_{ra}, ndipo Bearing B nthawi zonse imanyamula katundu wa radial F_{rb}. F_{ra} ndi F_{rb} zonse zimaonedwa ngati zabwino. Mitolo ya radial imagwira ntchito pakati pa kupanikizika (yomwe imatchedwa matebulo a mu bearing). Kuphatikiza apo, mphamvu yakunja ya axial K_a imagwira ntchito pa shaft kapena housing. Zinthu zolimbitsa axial za A ndi B zitha kupezeka m'matebulo oyendetsera.

Katundu Wofanana Wosasinthasintha

P_0 = 0.5F_r + Y_0 F_a

Kumene:

· Y_0 yaperekedwa m'matebulo operekera zizindikiro.

Mabearings a Roller Okhala ndi Mizere Yawiri

Katundu Wofanana Wosinthasintha

P = F_r + Y_1 F_a

Katundu Wofanana Wosasinthasintha

P_0 = F_r + Y_2 F_a

Ma values ​​a e, Y_1, Y_2, ndi Y_0 aperekedwa m'matebulo operekera zizindikiro.