Kutseguka kwa chogwirira chozungulira ndi kuchuluka kwa ntchito zomwe zimagwirizira mphete imodzi pamalo pake ndi ina kumbali ya radial kapena axial. Ntchito yayikulu yomwe imachitika mbali ya radial imatchedwa radial clearance, ndipo ntchito yayikulu yomwe imachitika mbali ya axial imatchedwa axial clearance. Nthawi zambiri, malo ozungulira a radial akakula, malo ozungulira a axial akakula, ndipo mosemphanitsa. Malinga ndi momwe chogwiriracho chilili, malo otseguka akhoza kugawidwa m'mitundu itatu iyi:
I. Chilolezo choyambirira
Chilolezo chaulere chisanakhazikitsidwe. Chilolezo choyambirira chimatsimikiziridwa ndi kukonza ndi kusonkhanitsa kwa wopanga.
2. Ikani chilolezo
Chomwe chimadziwikanso kuti fit clearance, ndi clearance pamene bearing ndi shaft ndi bearing housing zayikidwa koma sizikugwirabe ntchito. ...
3. Chilolezo cha ntchito
Pamene bearing ikugwira ntchito, kutentha kwa mphete yamkati kumakwera kufika pamlingo wapamwamba ndipo kutentha kumawonjezeka kufika pamlingo wapamwamba, kotero kuti bearing clearance imachepa. Nthawi yomweyo, chifukwa cha katundu, elastic deformation imachitika pamalo olumikizirana pakati pa thupi lozungulira ndi msewu wa raceway, zomwe zimawonjezera bearing clearance. Kaya bearing working clearance ndi yayikulu kapena yaying'ono kuposa bearing clearance zimadalira zotsatira za zinthu ziwirizi.
Mabearing ena ozungulira sangasinthidwe kapena kuchotsedwa. Amapezeka m'mitundu isanu ndi umodzi, kuyambira 0000 mpaka 5000; Pali mtundu wa 6000 (mabearing olumikizana a angular) ndi mtundu wa 1000, Mtundu wa 2000 ndi Mtundu wa 3000 wokhala ndi mabowo a cone mu mphete yamkati. Kutseguka kwa mitundu iyi ya mabearing ozungulira, pambuyo posinthidwa, kudzakhala kochepa kuposa kutseguka koyambirira. Kuphatikiza apo, mabearing ena amatha kuchotsedwa, ndipo kutseguka kumatha kusinthidwa. Pali mitundu itatu ya mabearing: Mtundu wa 7000 (wozungulira wopindika), mtundu wa 8000 (thrust ball bearing) ndi mtundu wa 9000 (thrust roller bearing). Palibe kutseguka koyambirira m'mitundu itatu iyi ya mabearing. Pa mabearing ozungulira a mtundu wa 6000 ndi mtundu wa 7000, kutseguka kwa radial kumachepetsedwa ndipo kutseguka kwa axial kumachepetsedwanso, ndipo mosemphanitsa, pomwe pa mabearing ozungulira a mtundu wa 8000 ndi mtundu wa 9000, kutseguka kwa axial kokha ndikofunikira kwambiri.
Kuyika bwino kwa bearing yozungulira kumathandiza kuti bearing yozungulira igwire ntchito bwino. Mpatawo ndi wochepa kwambiri, kutentha kwa bearing yozungulira kumakwera, sikungathe kugwira ntchito bwino, kotero kuti thupi lozungulira limakakamira; Mpata wochuluka, kugwedezeka kwa zida, phokoso la bearing yozungulira.
Njira yowunikira clearance ya radial ndi iyi:
I. Njira yodziwira
1. Ndi bearing yozungulira ndi manja, bearing iyenera kukhala yosalala komanso yosinthasintha popanda kumamatira kapena kugwedezeka.
2. Gwedezani mphete yakunja ya bearing ndi dzanja. Ngakhale kuti malo ozungulira ali 0.01mm yokha, kuyenda kwa axial kwa nsonga yapamwamba ya bearing ndi 0.10-0.15mm. Njirayi imagwiritsidwa ntchito pa ma bearing a mpira wa mzere umodzi.
Njira yoyezera
1. Yang'anani ndikutsimikizira malo olemera kwambiri a bearing yozungulira pogwiritsa ntchito feeler, ikani feeler pakati pa thupi lozungulira 180° ndi mphete yakunja (yamkati), ndipo makulidwe oyenera a feeler ndi radial clearance ya bearing. Njirayi imagwiritsidwa ntchito kwambiri mu ma bearing odzilungamitsa okha ndi ma cylindrical roller bearing.
2, yang'anani ndi chizindikiro choyimbira, choyamba ikani chizindikiro choyimbira pa zero, kenako kwezani mphete yakunja yoyimbira, kuwerenga kwa chizindikiro choyimbira ndiko kutseguka kwa choyimbiracho.
Njira yowunikira chilolezo cha axial ndi iyi:
1. Njira yogwiritsira ntchito mphamvu ya thupi
Yang'anani ndi chala chanu kuti mbali ya axial ya chogwirira chozungulira ionekere. Njirayi iyenera kugwiritsidwa ntchito pamene mbali ya shaft yawonekera. Ngati mbali ya shaft yatsekedwa kapena sizingayang'aniridwe ndi zala pazifukwa zina, yang'anani ngati mbali ya shaftyo ndi yosinthasintha pozungulira.
2. Njira yoyezera
(1) Yang'anani ndi feeler. Njira yogwiritsira ntchito ndi yofanana ndi ya kuyang'ana clearance ya radial ndi feeler, koma clearance ya axial iyenera kukhala
C = lambda/sin (2 beta)
Kumene c -- malo olumikizirana, mm;
-- Kunenepa kwa geji, mm;
-- Ngodya ya koni yonyamula, (°).
(2) Yang'anani ndi chizindikiro cha dial. Pamene crowbar ikugwiritsidwa ntchito kusuntha shaft yosuntha kupita ku malo awiri ovuta kwambiri, kusiyana kwa kuwerenga kwa chizindikiro cha dial ndi axial clearance ya bearing. Komabe, mphamvu yomwe imagwiritsidwa ntchito pa crowbar siyenera kukhala yayikulu kwambiri, apo ayi chipolopolocho chidzakhala ndi elastic deformation, ngakhale deformation ili yaying'ono kwambiri, idzakhudza kulondola kwa axial clearance yoyesedwa.
Nthawi yotumizira: Julayi-20-2020