Kodi ndi mitundu iti ndi njira zosinthira za ma commutator a DC motor?

2022-01-11

commutator ndi gawo lofunikira la dc motor ndi AC commutator armature. The commutator imagwiritsa ntchito mphamvu pamalo abwino kwambiri pa rotor ndipo imapanga mphamvu yozungulira yokhazikika (ma torque) potembenuza njira yamakono mu koyilo yosuntha ya galimoto. Mu injini, chipangizo chomwe chimatembenuza siginecha ya square wave yoyesedwa ndi elekitirodi yoyezera kuti ikhale yosunthika molunjika potembenuza komwe kumazungulira komwe kumazungulira theka lililonse ndikuyika cholumikizira chomwe chilipo polowera.

commutator ndi dongosolo la zotchingira ndi zingwe zamkuwa zomwe zimalumikizidwa ndi koyilo ya injini kuti ipereke mphamvu yosinthira ku koyilo ya injini. Kusintha ndikusintha komwe kumayendera komweko. Malinga ndi ma commutator amitundu yosiyanasiyana komanso mapangidwe osiyanasiyana a loko yamkati amagawidwa kukhala ophatikizika komanso oyendetsa ndege, ophatikizira ophatikizika a cylindrical, mzere wamkuwa wofanana ndi dzenje, umadziwika ndi mawonekedwe osavuta, magwiridwe antchito apamwamba. Ma Integral commutators amapezeka mumitundu itatu yoyambira: mkuwa ndi mica, nkhungu yamtambo yamtambo ndi nyumba zoumbidwa. The planar commutator imawoneka ngati fan yokhala ndi chingwe chamkuwa chokhala ndi gawo la fan perpendicular to the hobo.

Mitundu itatu ya ma commutators owumbidwa

Pogwiritsa ntchito dzenje lamkati la pulasitiki ndi tsinde lozungulira, mawonekedwe ake ndi osavuta, koma kukula kwa dzenje lamkati la pulasitiki sikovuta kulimvetsa, liyenera kulamulira kukula kwa kuthamanga kwa magazi ndi pulasitiki shrinkage mlingo, pofuna kuonetsetsa kulolerana. za dzenje kutsinde, ayenera kuyesetsa kupewa kukakamizidwa zabwino pulasitiki processing, pulasitiki Machining ntchito zambiri osauka.

Nkhono yamkuwa imakanizidwa pamodzi ndi pulasitiki, ndipo kukula kwa dzenje la shaft ndikosavuta kukwaniritsa zofunikira. Pofuna kupewa kusuntha pakati pa pulasitiki ndi manja, mawonekedwe ozungulira akunja a manja nthawi zambiri amakhala ndi mizere kapena mikwingwirima. Zida za manja zimatha kukhala mkuwa, chitsulo kapena aluminium alloy. Koma ziyenera kuzindikirika kuti kuuma kwa zinthuzo kuyenera kufanana ndi kuuma kwa shaft ya rotor, yotsika pang'ono kusiyana ndi kuuma kwa rotor shaft.

Mphete yolimbikitsa imawonjezedwa ku groove yofanana ndi u ya chidutswa cha commutator. Nthawi zambiri amagwiritsidwa ntchito kunyamula mphamvu ya centrifugal ya malo amagetsi pamene m'mimba mwake wa commutator wagawidwa ndipo kutalika kumawonjezeka. Kutsekereza pakati pa mphete ndi chidutswa cha commutator kuyenera kutsimikiziridwa. Ndi mphete zowumitsa, mainchesi a commutator amatha kupangidwa mpaka 500.

Woyendetsa ndege

Ndipotu, ndi commutator kuumbidwa, ndi mkuwa pamwamba kukhudzana ndi burashi ndi mphete ndege, kwenikweni, wotchedwa ndege commutator, commutator uyu ali ndi dongosolo lapadera, ali pa pepala mkuwa ndi wosanjikiza graphite, ntchito yake ndi kusintha mikangano ya commutator ndi carbon burashi, kutalikitsa moyo wa commutator.

Mitundu itatu ya commutator processing

Kusonkhana kwachindunji kwa commutator, kukula kwa commutator ndi kochepa, nthawi zambiri kuyika gawo lapansi la pepala lamkuwa la commutator mu thupi la commutator, ndiyeno gwiritsani ntchito mphete yamkuwa kuti musindikize pepala lamkuwa pamtunda wozungulira wa commutator, chifukwa kukula kwa geometric kwa chigawocho ndi kochepa kwambiri, kukonza makina kumakhala kovuta, kulondola kwa commutator kumakhala kochepa.

Chipinda chamkuwa cha commutator chimakhala ndi mbedza pamwamba ndipo mizu iwiri yowongoka imayikidwa mu thupi la commutator motsatana, kotero kuti mbale yamkuwa imamangiriridwa kwambiri ndi mawonekedwe akunja ozungulira a commutator, ndiyeno mbale yamkuwa imayikidwa ndi apansi awiri inverted zomangira. Kuchuluka kwa chakudya chamkuwachi ndi chachikulu kwambiri kuti chisapangitse pepala lamkuwa lopanda vuto, posinthana liyenera kuyang'anira kuchuluka kwa chakudya pagulu linalake. Ngati ndi kotheka, njira zingapo za lathe zitha kugwiritsidwa ntchito kuti mupeze zotsatira zomwe mukufuna.

Mechanical kugwirizana commutator, ichi ndi chogawanika commutator, pambuyo pa kusonkhana kwa zigawo zisanu, zomwe zimadziwika kuti "zisanu m'modzi", pamwamba pa mbale yamkuwa imakhala ndi mphete yolowera, chingwe pa thupi la convex commutator, m'munsi mwa tembenuzani chomangira mu gulu lothandizira la commutator, pali cholumikizira cholumikizira thupi ndi gulu lothandizira. Pambuyo pochotsa waya wachikopa wa utoto, chidutswa chamkuwa cha commutator chimalumikizidwa ndi waya wachikopa wa utoto. Chombochi chipanganso zidutswa zamkuwa zowuluka zolakwika ngati kuchuluka kwake kuli kokulirapo potembenuka.

mapeto

Chipinda cha commutator chimalumikizidwa ndi ma coils a armature. Kuchuluka kwa ma koyilo kumadalira liwiro ndi voteji ya mota. Burashi yamkuwa ndi yoyenera kwambiri pamagetsi otsika kwambiri komanso apamwamba kwambiri, pomwe kukana kwakukulu kwa burashi ya kaboni kumayambitsa kutsika kwakukulu kwamagetsi. Copper's high conductivity imatanthauza kuti zigawozo zikhoza kukhala zazing'ono ndikukhala pafupi. Kugwiritsa ntchito cholumikizira chamkuwa kumatha kuwongolera bwino, chapano chimayenda mosavuta mumkuwa, ndipo mota nthawi zambiri imakhala yogwira ntchito 85 mpaka 95 peresenti posamutsa mphamvu ku katundu wake. Kusintha kwamagetsi kumagwiritsa ntchito zida zamagetsi zolimba m'malo mwa makina oyendetsa makina ndi maburashi ofanana, ndipo kuchotsa maburashi kumatanthauza kugundana kochepa kapena kuvala pamakina ndikuchita bwino kwambiri. Ma motors amtunduwu amakhala okwera mtengo komanso ovuta kuposa ma burashi osavuta chifukwa chosowa owongolera ndi zamagetsi.



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