Menene sharewa kuma ta yaya ake aunawa don mirgina bearings?

Matsakaicin abin birgima shine matsakaicin adadin aiki wanda ke riƙe da zobe ɗaya a wuri ɗaya kuma a cikin radial ko axial direction. Matsakaicin aiki tare da radial shugabanci ana kiransa radial clearance, kuma matsakaicin aiki tare da axial shugabanci ake kira axial clearance. Gabaɗaya magana, mafi girman izinin radial, mafi girman izinin axial, kuma akasin haka. Dangane da yanayin ɗaukar nauyi, za a iya raba izini zuwa nau'ikan uku masu zuwa:

I. Amincewa ta asali

Kyauta kyauta kafin ɗaukar shigarwa. Ana ƙaddamar da izini na asali ta hanyar sarrafawa da haɗuwa da masana'anta.

2. Shigar da izinin

Har ila yau, an san shi da izinin dacewa, shine izinin lokacin da aka shigar da katako da shaft da kuma gidaje masu ɗaukar kaya amma ba a yi aiki ba tukuna. Haɗin hawan ya fi ƙanƙanta fiye da na asali saboda hawan tsangwama, ko dai ƙara zoben ciki, rage zoben waje, ko duka biyun.

3. Amincewa aiki

Lokacin da mai ɗaukar nauyi yana cikin yanayin aiki, zafin zobe na ciki yana tashi zuwa matsakaicin kuma haɓakar thermal zuwa matsakaicin, don haka raguwar ɗaukar nauyi. A lokaci guda, saboda tasirin kaya, nakasawa na roba yana faruwa a wurin tuntuɓar tsakanin jujjuyawar jiki da hanyar tsere, wanda ke ƙara haɓakar ɗaukar hoto. Ko izinin aiki mai ɗaukar nauyi ya fi girma ko ƙarami fiye da izinin hawa ya dogara da haɗin gwiwar waɗannan abubuwa biyu.

Ba za a iya daidaita wasu igiyoyin mirgina ko tarwatsa su ba. Suna samuwa a cikin nau'i shida, daga 0000 zuwa 5000; Akwai nau'in nau'in 6000 (angular lamba bearings) da nau'in 1000, Nau'in 2000 da Nau'in 3000 tare da ramukan mazugi a cikin zobe na ciki. Matsakaicin hawan irin waɗannan nau'ikan birgima, bayan daidaitawa, zai zama ƙarami fiye da yardawar asali. Bugu da ƙari, ana iya cire wasu bearings, kuma za'a iya daidaita sharewa. Akwai nau'ikan abubuwa uku guda uku: Nauga 7000 (Takear da roller bearg), buga 8000 (dillar ball being) da nau'in 9000 (dills cakulan ball). Babu wani izini na asali a cikin waɗannan nau'ikan bearings guda uku. Don nau'in 6000 da nau'in 7000 rolling bearings, an rage raguwar radial kuma an rage raguwar axial, kuma akasin haka, yayin da nau'in 8000 da nau'in 9000 rolling bearings, kawai ƙaddamarwa axial yana da mahimmanci mai amfani.

Ƙimar hawa daidai yana sauƙaƙe aikin al'ada na mirgina. Tsaftacewa ya yi ƙanƙanta, zafin jiki mai jujjuyawar yana tashi, ya kasa yin aiki akai-akai, ta yadda jikin mai juyawa ya makale; Tsaftacewa mai yawa, girgiza kayan aiki, amo mai ɗaukar nauyi.

Hanyar duba radial clearance shine kamar haka:

I. Hanyar jin daɗi

1. Tare da jujjuyawar hannu, nauyin ya kamata ya zama santsi da sassauƙa ba tare da mannewa da astringency ba.

2. Girgiza zobe na waje da hannu. Ko da madaidaicin radial shine kawai 0.01mm, motsi na axial na saman batu na ɗaukar nauyi shine 0.10-0.15mm. Ana amfani da wannan hanyar don ƙwallo ta tsakiya a jere ɗaya.

Hanyar aunawa

1. Bincika kuma tabbatar da matsakaicin matsakaicin nauyin nauyin mirgina tare da mai jin dadi, saka mai jin dadi tsakanin jikin mirgina 180 ° da zobe na waje (na ciki), kuma kauri da ya dace na mai ji shi ne radial sharewa na ɗaukar hoto. Ana amfani da wannan hanyar a ko'ina a cikin nau'i-nau'i masu dacewa da kai da silinda na abin nadi.

2, duba tare da alamar bugun kira, da farko saita alamar bugun kiran zuwa sifili, sannan a ɗaga zobe mai jujjuyawar waje, karatun ma'aunin bugun kira shine sharewar radial na ɗaukar nauyi.

Hanyar dubawa na axial clearance shine kamar haka:

1. Hanyar jin daɗi

Bincika izinin axial na abin birgima da yatsanka. Ya kamata a yi amfani da wannan hanya lokacin da ƙarshen shaft ya bayyana. Lokacin da aka rufe ƙarshen shaft ko ba za a iya bincika ta yatsunsu ba saboda wasu dalilai, duba ko ramin yana jujjuyawa.

2. Hanyar aunawa

(1) Duba tare da ji. Hanyar aiki iri ɗaya ce da na duba radial clearance tare da ji, amma ya kamata a cire axial.

C = lambda/sin (2 beta)

Inda c -- axial clearance, mm;

-- kauri ma'auni, mm;

-- Mazugi mai ɗauke da mazugi, (°).

(2) Duba tare da alamar bugun kira. Lokacin da aka yi amfani da maƙarƙashiya don tada igiyar motsi zuwa matsananciyar matsayi guda biyu, bambancin karatun mai nuna bugun kira shine sharewar axial na ɗamarar. Duk da haka, ƙarfin da aka yi amfani da shi a kan crowbar bai kamata ya kasance mai girma ba, in ba haka ba harsashi zai sami nakasar nakasa, koda kuwa nakasar tana da ƙanƙanta sosai, zai shafi daidaiton ma'aunin axial da aka auna.