Pokonza gulu la pisitoni la injini, zovuta zimadza ndikuyika ma pistoni - mphete zomwe zimachokera ku grooves sizimalola kuti pisitoni ilowe mwaulere.Pofuna kuthetsa vutoli, piston ring mandrels amagwiritsidwa ntchito - phunzirani za zipangizozi, mitundu yawo, mapangidwe ndi ntchito kuchokera m'nkhaniyi.
Cholinga cha piston ring mandrel
The mandrel wa mphete pisitoni (crimping) ndi chipangizo mu mawonekedwe a tepi ndi achepetsa cholinga kumiza mphete pisitoni mu grooves wa pisitoni pamene wokwera mu chipika injini.
Kukonza gulu la pisitoni la injini sikumamaliza popanda kuchotsa ma pistoni mu chipika chake.Kuyika kotsatira kwa ma pistoni m'masilinda a chipika nthawi zambiri kumayambitsa mavuto: mphete zomwe zimayikidwa mu grooves zimatuluka kupyola pisitoni ndikuletsa kulowa m'manja mwake.Pofuna kuthetsa vutoli, pokonza injini, zipangizo zapadera zimagwiritsidwa ntchito - mandrels kapena crimps wa mphete za pistoni.
Mandrel a mphete za pisitoni ali ndi ntchito imodzi yayikulu: imagwiritsidwa ntchito popanga mphete ndi kuzimiza mumitsinje ya pisitoni kuti dongosolo lonselo lilowe momasuka mu silinda ya chipikacho.Komanso, mandrel amachita ngati chitsogozo poyika pisitoni, kuteteza kuti skewing, komanso kupewa kuwonongeka kwa mphete ndi galasi la silinda.
Mphete za pistoni za mandrel ndi chida chosavuta koma chofunikira kwambiri, popanda zomwe sizingatheke kukonza gulu la pisitoni ndi machitidwe ena a injini.Koma musanapite ku sitolo kwa mandrel, muyenera kumvetsetsa mitundu yomwe ilipo ya zipangizozi, mapangidwe awo ndi mawonekedwe awo.
Mitundu, kapangidwe ndi mfundo ya ntchito piston mphete mandrel
Masiku ano crimps akhoza kugawidwa m'magulu awiri akuluakulu malinga ndi mfundo ya ntchito:
● Ratchet (ndi njira za ratchet);
● Chingwe.
Iwo ali ndi kusiyana kwakukulu kwapangidwe ndi mfundo yosiyana yogwiritsira ntchito.
Ma Ratchet mandrels a mphete za pistoni
Zipangizozi zili zamitundu iwiri ikuluikulu:
- Ndi makina a ratchet oyendetsedwa ndi kiyi (kolala);
- Ndi makina a ratchet ophatikizidwa mu chogwirira choyendetsedwa ndi lever.
Zomwe zimagwiritsidwa ntchito kwambiri ndi ma crimps amtundu woyamba.Amakhala ndi zigawo ziwiri zazikulu: lamba wachitsulo wonyezimira ndi ratchet mechanism (ratchet).Maziko a chipangizo ndi tepi ndi m'lifupi makumi angapo mamilimita mpaka 100 mm kapena kuposa.Tepiyo imapangidwa ndi chitsulo, imatha kutentha kutentha kuti iwonjezere mphamvu, imakulungidwa mu mphete.Pamwamba pa tepiyo pali njira ya ratchet yokhala ndi nthiti ziwiri zopapatiza.Pamtunda wa makinawo pali ng'oma zokhotakhota matepi ndi gudumu la gear lomwe lili ndi pawl yodzaza masika.Pawl imapangidwa mwa mawonekedwe a lever yaying'ono, ikakanikizidwa, makina a ratchet amamasulidwa ndipo tepiyo imamasulidwa.Mu imodzi mwa ng'oma za tepiyo, dzenje la axial la magawo apakati amapangidwa, momwe wrench yooneka ngati L (kolala) imayikidwa kuti imangirire tepiyo.
Pali mitundu yosiyanasiyana ya ma ratchet lamba ogwirira ntchito ndi ma pistoni aatali kwambiri - amakhala ndi makina opangira ma ratchet (koma, monga lamulo, ndi gudumu limodzi la giya ndi pawl) loyendetsedwa ndi wrench imodzi.Kutalika kwa chipangizo choterocho kumatha kufika 150 mm kapena kuposa.
Mulimonsemo, mandrels amtundu uwu, chifukwa cha mapangidwe awo, ali ponseponse, ambiri a iwo amakulolani kuti mugwire ntchito ndi pistoni ndi m'mimba mwake 50 mpaka 175 mm, ndipo mandrel owonjezera awiri amagwiritsidwanso ntchito.
Ma ratchet mandrel a mphete za pistoni amagwira ntchito mophweka: pamene nsonga ya ratchet imatembenuzidwa ndi kolala, gudumu la gear limazungulira, pamene pawl imalumpha momasuka.Mukayimitsa, kolala ya pawl imakhazikika pa dzino la gudumu ndikuletsa kuti lisasunthike - izi zimatsimikizira kukhazikika kwa mandrel ndipo, motero, kuphulika kwa mphetezo m'mizere yake.
Kuwombera ndi chogwirira chomwe makina opangira ratchet amapangidwira ali ndi chipangizo chofanana, koma alibe kolala - udindo wake umasewera ndi lever yomangidwa.Kawirikawiri, zipangizo zoterezi zimakhala ndi lamba wopapatiza, zimapangidwira kuti zizigwira ntchito ndi njinga zamoto ndi zina zochepetsera mphamvu zamagetsi.
Mandrel a mphete za pistoni okhala ndi kiyi (wrench)
Ratchet piston mphete mandrel
Lever mandrels a mphete za pistoni
● Matepi okhala ndi pliers kapena zida zina;
● Matepi okhala ndi crimping ndi chida chapadera - nkhupakupa, kuphatikizapo ratchet;
● Matepi okhala ndi crimping ndi lever yomangidwa ndi makina otsekera komanso amatha kusintha kukula kwa pistoni.
Kuwombera kosavuta kwamtundu woyamba ndi: nthawi zambiri izi zimakhala mphete zotseguka zopangidwa ndi chitsulo chokhuthala chokhala ndi mbali ziwiri kapena malupu kumbali zonse ziwiri, zomwe zimasonkhanitsidwa pamodzi ndi pliers kapena pliers.Ma mandrel oterowo ndi osayendetsedwa, amatha kugwiritsidwa ntchito ndi ma pistoni okhala ndi mainchesi ofanana, komanso, sali osavuta kugwiritsa ntchito, chifukwa amafunikira kusungidwa kwa pliers kapena pliers mpaka pisitoni itayikidwa bwino m'manja.
Ma mandrel amtundu wachiwiri ndi abwino kwambiri, amapangidwanso ngati mphete zotseguka, komabe, mapepala apadera amagwiritsidwa ntchito pa screed yawo ndi kuthekera kokonza malo aliwonse.Ma crimps oterowo safuna kuyesetsa kosalekeza kwa nthata, chifukwa chake ndi yabwino komanso yosavuta kugwiritsa ntchito.Nthawi zambiri, zida zamtunduwu zimaperekedwa ngati zida zokhala ndi ma mandrel angapo amitundu yosiyanasiyana.
Lever piston mphete mandrel
Kusankhidwa kolondola ndikugwiritsa ntchito piston ring mandrel
Kusankhidwa kwa piston ring mandrel kuyenera kupangidwa potengera mawonekedwe a pistoni ndi ntchito yomwe iyenera kuchitidwa.Ngati galimoto imodzi yokha ikukonzedwa, ndiye kuti n'zomveka kusankha crimping yosavuta ndi ratchet limagwirira kapena ndi plier clamp.Ngati kuyika kwa pistoni kumachitika nthawi zonse (mwachitsanzo, m'malo okonzera magalimoto), ndiye kuti ndibwino kuti musankhe ma lamba amtundu wapadziko lonse omwe ali ndi makina a ratchet kapena ma mandrels amitundu yosiyanasiyana.Ziyenera kumveka kuti pistoni zazikulu zamagalimoto ndi bwino kugwiritsa ntchito mandrels ambiri, ndi pistoni zamoto - zopapatiza.
Kuti mugule kuti mugwiritse ntchito akatswiri, zida zonse zokonzera magulu a pistoni zitha kukhala njira yosangalatsa.Zida zotere zimatha kukhala ndi ma mandrel osiyanasiyana a mphete za pistoni (zonse za tepi ndi nthata), zokoka mphete ndi zida zina.
Kugwira ntchito ndi mphete za pistoni nthawi zambiri kumakhala kosavuta, kumabwera pamachitidwe angapo:
● Kuti zikhale zosavuta, ikani pisitoni mu vice, perekani ma grooves ake ndi mphete ndi siketi bwino ndi mafuta;
● Ikani mphete mu grooves motsatira ndondomeko - kuti mbali zawo zokhoma zikhale pamtunda wa madigiri 120 kuchokera kwa wina ndi mzake;
● Mafuta mkati mwa mandrel ndi mafuta;
● Ikani mandrel pa pisitoni;
● Pogwiritsa ntchito wrench, lever kapena pliers (malingana ndi mtundu wa chipangizo), sungani mandrel pa pisitoni;
● Ikani pisitoni pamodzi ndi mandrel mu silinda ya chipika, gwiritsani ntchito mallet kapena nyundo kupyolera mu gasket kuti mugwetse mosamala pisitoni kuchokera mu mandrel mu silinda;
● Pistoniyo ikaphatikizidwa mokwanira mu silinda, chotsani ndi kumasula mandrel.
Seti ya piston ring mandress
Pogwira ntchito ndi mandrel, ndikofunikira kumangiriza mosamala: ngati crimping ili yofooka kwambiri, mphete sizidzalowa m'mitsempha ndipo zidzasokoneza kuyika pisitoni mu liner;Ndi crimping kwambiri, pisitoni adzakhala kovuta kugogoda mu mandrel, ndipo mu nkhani iyi, limagwirira chipangizo akhoza kusweka.
Ndi kusankha kolondola ndi kugwiritsa ntchito piston ring mandrel, kusonkhana kwa injini pambuyo pa kukonzanso gulu la pistoni kudzafuna nthawi yochepa ndi khama.
Nthawi yotumiza: Jul-11-2023