Yana da matuƙar muhimmanci a daidaita diamita na ciki na bearing da shaft da kuma diamita na waje da gidan lokacin da aka sanya bearing. Idan ya yi laushi sosai, saman bearing zai haifar da zamewa mai kama da juna, wanda ake kira creep. Da zarar ya yi creep, zai lalace saman bearing, ya lalata shaft ko gidan, kuma foda zai shiga cikin bearing, yana haifar da zafi, girgiza da lalacewa. Tsangwama mai yawa zai haifar da ƙaramin diamita na waje na zoben waje ko babban diamita na ciki na zoben ciki, wanda zai rage izinin ciki na bearing. Bugu da ƙari, daidaiton geometric na shaft da aikin harsashi zai kuma shafi daidaiton asali na zoben bearing, don haka yana shafar aikin bearing.
1.1 Zaɓin Daidaitawa 1.1.1 Yanayin kaya da zaɓin dacewa an ƙaddara su bisa ga alkiblar nauyin ɗaukar beyar da yanayin juyawa na zoben ciki da na waje, gabaɗaya yana nufin Tebur 1. Tebur 1 da yanayin juyawa na kaya da ɗaukar kaya zane-zane tare da zoben ciki: juyawa mara kyau: alkiblar nauyi mara tsayayye: madaidaicin zoben ciki mai jujjuyawa zoben ciki, zoben waje mai tsayayye yana AMFANI DA daidaiton tsangwama (tsangwama) zoben waje: akwai dacewa da gudu (tsangwama) zoben ciki: madaidaicin da'ira mara tsayayye: alkiblar juyawa na kaya, da zoben waje da juyawa zoben ciki: juyawa mara tsayi: madaidaicin nauyin kaya: madaidaicin zoben ciki zoben ciki mai tsayayye, juyawa na zoben waje yana samuwa dacewa da gudu (tsangwama) zoben waje: YANA AMFANI DA daidaiton tsangwama (tsangwama) zoben ciki: tsaye da'ira mara tsayi: juyawar nauyin juyawa: tare da juyawar zoben ciki a lokaci guda. 2) Shawarar dacewa Don zaɓar dacewa da ta dace, halayen nauyin ɗaukar beyar, girma, yanayin zafin jiki, shigarwar ɗaukar beyar, cire yanayi daban-daban. Lokacin da aka ɗora beyar a kan harsashi mai sirara da shaft mai rami, adadin tsangwama yana buƙatar ya fi na talakawa girma. Bakin da aka raba zai iya canza zoben waje na bearing cikin sauƙi, don haka ya kamata a yi amfani da zoben waje a hankali a ƙarƙashin yanayin daidaitawar tsaye. Idan akwai babban girgiza, zoben ciki da zoben waje ya kamata su ɗauki daidaiton tsaye.
Yi aiki tare da shawarar da ta fi dacewa, duba tebur na 2, tebur na 3 tebur na 2 centripetal bearing da shaft tare da sharuɗɗan da suka dace (ma'ana) diamita na axle (mm) mai zagaye na birgima bearings remark ball bearings cylindrical nadi bearings taper nadi bearings taper kai tsaye nadi bearing cylindrical hole bearing waje zobe da shaft juyi kaya buƙatar zobe na ciki akan shaft yana da sauƙin motsa ƙafafun axle masu tsauri duk girman buƙatun daidaito na g6, Tare da g5, h5, ɗaukar nauyi da sauƙaƙe motsi ana buƙatar h6 kuma yana samuwa ba tare da zobe na ciki ba yana da sauƙin motsa ƙafafun tashin hankali na shaft h6 zobe na ciki mai juyawa firam, zagaye na igiya ko alkiblar nauyin canzawa a ƙarƙashin nauyi mai sauƙi 0.06 Cr (1) kayan aiki daban-daban na kaya, famfo, mai hura iska, babbar mota, injinan daidaito, kayan aikin injin ƙasa da 18 -- Js5 daidaito lokacin da ake buƙata ta matakin p5, diamita na ciki ta amfani da madaidaicin bearing ball a ƙarƙashin 18 mm h5. Kayan da aka saba amfani da shi (0.06~0.13) Cr (1) Babban ɓangaren ɗaukar kaya na injin turbine matsakaici da babba, famfo, sandar injin, na'urar watsa gear, injinan aikin katako a ƙarƙashin 18 -- Ana iya amfani da bearings na naɗawa masu layi ɗaya na N6 da bearings na ƙwallon radial push guda ɗaya na k6, M6 maimakon K5, M5. P6 140-200 40-65 R6 200-280 100-140 N6 -- 200-400 140-280 P6 -- 280-500 R6 -- Sama da 500 R7 kaya masu nauyi (sama da 0.13Cr (1)) masu motocin lantarki masu motocin lantarki injinan gini na lantarki -- 50-140 50-100 N6 Bukatar ta fi tabbatuwar bearing - p6, 140-200, 100-140 - sama da 200, 140-200 r6 -- 200-500 r7 kawai yana ɗaukar nauyin axial na sassan bearing na tsari amfani da wurin duk girma Js6 (j6) - tebur 3 bearing na tsakiya tare da yanayin ramin harsashi shari'o'i masu dacewa (nuni) motsi na ramin zobe na waje kewayon juriyar matsayi bayanin kula na jimlar bearing na bango bearing na waje bearings na tayal na mota (crane) tafiya ta hanyar dabaran hanya P7 zobe na waje zuwa ga alkiblar axial.
Nauyin al'ada, nauyi mai nauyi na ƙafafun mota (bearings na ƙwallon ƙafa) girgiza N7 nauyi mai sauƙi ko canza bel ɗin jigilar kaya mai ɗaukar nauyi, pulley M7 ba mai masaukin kayan jagora ba babban nauyin trolley mai nauyi ko nauyi mai sauƙi na famfo crankshaft spindle babban mota K7 zobe na waje bisa ƙa'ida ba zuwa ga alkiblar axial na zobe na waje ba ya buƙatar zuwa alkiblar axial nau'in haɗin kai ramukan harsashi ko nau'in rabuwa ramin harsashi nauyi na yau da kullun ko nauyi mai sauƙi JS7 (J7) zobe na waje za a iya motsa shi zuwa buƙatar axial zobe na waje zuwa alkiblar axial na zobe na ciki yana jujjuya nauyin kowane nau'in nauyin da ke ɗaukar nauyin akwatin ɗaukar nauyi na gaba ɗaya na motar jirgin ƙasa zobe na waje H7 zuwa alkiblar axial cikin sauƙi - nauyi na yau da kullun ko nauyi mai sauƙi shirya shigar da shaft na harsashi da ɗaukar nauyi H8 gaba ɗaya cikin nauyi na gabaɗaya, zafin jiki na takarda yana sa na'urar busar da kaya G7 nauyi mai sauƙi, musamman buƙatar daidaitaccen juyawa na niƙa sandar a bayan ƙwallon mai ɗaukar nauyi mai sauri mai centrifugal compressor gyarawa gefen gefe JS6 (J6) zobe na waje zuwa alkiblar axial - ba a jagoranci nauyin alkiblar a bayan ƙwallon mai ɗaukar nauyi mai sauri mai centrifugal compressor mai sauri mai sauri ba Zoben waje mai ɗaukar gefen K6 mai gyarawa wanda aka gyara a cikin alkiblar axial na kayan bisa ƙa'ida, wanda ya dace da adadin tsangwama ga mafi girma fiye da K, buƙatu na musamman a ƙarƙashin yanayin daidaito mai girma, Ya kamata a ƙara amfani da ƙananan dacewa da aka yarda don kowane dalili.
Nauyin juyawa na zobe na ciki yana da nauyin da ya bambanta, musamman ma yana buƙatar juyawa daidai da kuma babban tauri na sandar kayan aiki ta injin tare da zoben waje mai siffar M6 ko N6 wanda aka saita a cikin alkiblar axial don kayan aikin gida marasa hayaniya na H6 zoben waje zuwa alkiblar axial - 3), daidaiton axial, hula, da kuma axial ɗin rashin ƙarfi na saman, daidaiton hula ba shi da kyau, ɗaukar nauyin da ya shafa ba zai iya nuna aikin da ake buƙata ba. Misali, shigar da wani ɓangare na kafada idan daidaiton bai yi kyau ba, zoben ciki da na waje za su karkata. Baya ga nauyin ɗaukar nauyin, tare da nauyin da aka tattara a ƙarshe, rayuwar gajiyar ɗaukar nauyin za ta ragu, kuma mafi mahimmanci, zai zama sanadin lalacewar keji da kuma nutsewa. Bugu da ƙari, nakasar harsashi saboda nauyin waje ba ta da girma. Ya zama dole a goyi bayan cikakken tauri na ɗaukar nauyin. Mafi girman tauri, mafi kyawun hayaniyar da rarraba nauyin ɗaukar nauyin ɗaukar nauyin.
A yanayin amfani gabaɗaya, injin juyawa ko sarrafa injina mai ban sha'awa na iya zama. Duk da haka, ga lokutan da akwai tsauraran buƙatu na juyawa da hayaniya da yanayin kaya sun yi tsauri sosai, ya kamata a yi amfani da niƙa na ƙarshe. Idan aka shirya fiye da bearings 2 a cikin dukkan gidan, ya kamata a tsara saman haɗin gidan don a yi masa injina da huda. A cikin yanayin amfani gabaɗaya, shaft, daidaiton gida da ƙarewa na iya zama kamar yadda aka nuna a cikin Tebur 4 a ƙasa. Tebur 4 Daidaito da Gidaje Daidaito da Kammalawa Na bearings - Juriyar zagaye na kewaye na AXIS na aji 0, aji 6, aji 5, aji 4 IT3 ~ IT42 2IT3 ~ IT42 2 IT4 ~ IT52 2IT2 ~ IT42 2 Juriyar silinda - aji 0, aji 6, aji 5, aji 4 IT3 ~ IT42 2IT2 ~ IT32 2 Juriyar gudu ta kafada - aji 0, aji 6, aji 5, aji 4 IT3IT3 IT3~IT4IT3 Daidaita saman Rmax ƙaramin bearing babban bearing 3.2 S6.3s 6.3 S12.5s.
Abin da ake kira sharewa ta ciki na bear yana nufin adadin motsi lokacin da aka gyara zoben ciki ko na waje na bear kafin a ɗora bear a kan shaft ko akwatin bearing, sannan a motsa gefen da ba a gyara ba a cikin alkiblar radial ko axial. Dangane da alkiblar motsi, ana iya raba shi zuwa sharewa ta radial da sharewa ta axial. Lokacin auna sharewa ta ciki na bearing, don kiyaye ƙimar da aka auna ta tsaya cak, ana amfani da nauyin gwaji gabaɗaya akan zoben. Saboda haka, ƙimar gwajin ta fi girma fiye da ƙimar sharewa ta ainihi, wato, ƙarin adadin sakewa ta roba da aka haifar ta hanyar amfani da nauyin gwaji. An nuna ainihin ƙimar sharewa ta ciki na bearing a cikin Tebur 4.5. An gyara ƙaruwar sharewa da sakewa ta roba da ke sama ta haifar. Nakasa ta roba ta bearings ba ta da yawa. Tebur 4.5 don kawar da tasirin gyaran nauyin gwajin radial (ƙwallon rami mai zurfi): diamita na samfurin bearing um d (mm) (N) gyaran nauyin gwajin sharewa zuwa C2 C3 C4 C510 na yau da kullun (gami da) 18 24.549 147 3 ~ 4 4 ~ 5 6 ~ 8 45 8 4 6 9 Afrilu 9 Afrilu 6 92.2 zaɓin sharewar bearing, saboda dacewa da bearing da bambancin zafin jiki akan dalilai na ciki da na waje, gabaɗaya sun fi ƙanƙanta fiye da sharewar farko. Sharewar aiki tana da alaƙa da rayuwar bearing, ƙaruwar zafin jiki, girgiza da hayaniya, don haka dole ne a saita ta zuwa yanayin da ya fi dacewa.
A ka'ida, lokacin da bearing ke aiki, tare da ɗan sharewa mai rauni, tsawon rayuwar bearing shine mafi girma. Amma yana da matuƙar wahala a kiyaye wannan sharewa mafi kyau. Tare da canjin yanayin sabis, sharewa mara kyau na bearing zai ƙaru daidai gwargwado, wanda zai haifar da raguwar rayuwar bearing ko samar da zafi. Saboda haka, sharewa ta farko na bearing gabaɗaya an saita ta ɗan fi sifili kaɗan. FIG. 2 bambancin bearing radial clearance 2.3 Sharuɗɗan zaɓi don sharewa mai ƙarfi A ka'ida, rayuwar bearing ana haɓaka ta ne lokacin da akwai sharewa mai rauni kaɗan a ƙarƙashin yanayin aiki mai aminci. Amma a aikace, yana da matuƙar wahala a kiyaye wannan yanayin mafi kyau. Da zarar wasu yanayi na sabis sun canza, sharewa mara kyau zai ƙaru, wanda ke haifar da raguwar rayuwar bearing ko dumama. Saboda haka, lokacin da aka zaɓi sharewa ta farko yawanci, ana buƙatar sharewa ta aiki ta ɗan fi sifili kaɗan.
Ga bearings a ƙarƙashin yanayi na al'ada, za a ɗauki daidaita nauyin da aka saba ɗauka. Lokacin da gudu da zafin jiki suka zama na al'ada, ya kamata a zaɓi izinin gama gari mai dacewa don samun izinin aiki mai dacewa. Tebur na 6 izinin gama gari mai dacewa misali ta amfani da sharuɗɗan izinin lokaci mai dacewa a ƙarƙashin nauyi mai yawa, nauyin tasiri, tsangwama ga babban adadin aksali na motar jirgin ƙasa C3 allon girgiza C3 da C4 ba zai iya biyan nauyin alkibla ba, a ciki da wajen da'irar tarakta C4 a ɗauko static tare da motar jan hankali ta jirgin ƙasa, mai ragewa ko injin takarda mai zafi na ciki na C4, injin busar da C3 da injin niƙa C4 kun C3 don rage girgizar juyawa da hayaniyar daidaitawar sharewa ta micro-motor C2 da kuma sarrafa girgizar sandar shaft NTN (layi biyu na silinda naɗa bearing) C9NA, C0NA.
Lokacin Saƙo: Yuli-30-2020