nkhani

Mfundo Zofunika ndi Makhalidwe a Kusankha Kunyamula Kagwere

 

Ma bereji a mpiraamagwiritsidwa ntchito kwambiri mu zida zamakina. Mtundu woyenera ukhoza kusankhidwa kutengera momwe umagwiritsidwira ntchito. Kuti ugwirizane ndi ntchito zosiyanasiyana,mabearing a mpiraamapereka zinthu zosiyanasiyana zokhazikika. Njira zoyendetsera mpira zimaphatikizapo mtundu wotsogolera kayendedwe ka magazi, mtundu wa circulator, ndi mtundu wa chivundikiro chakumapeto. Njira zoyendetsera patsogolo zimaphatikizapo kuyika malo oyambira kunyamula (mtundu wa nati ziwiri, mtundu wa malo oyambira kunyamula) ndi kukakamiza kosalekeza kunyamula.

 

Mfundo zazikulu pakusankha screw bearing ya mpira:

 

1. Dziwani kukula kwa dayamita kutengera katundu. Magawo a magwiridwe antchito a injini akuphatikizapo mphamvu yotulutsa; ngati chochepetsera chikuphatikizidwa, izi ziyeneranso kuganiziridwa.

 

2. Dziwani mphamvu ya screw bearing lead kutengera liwiro lolunjika ndi liwiro lozungulira. Injini ikangodziwika, liwiro lotulutsa limadziwika. Ganizirani liwiro lalikulu kwambiri lomwe mukufuna. Chulukitsani liwiro la injini (gawani ndi chiŵerengero chochepetsera ngati chochepetsera chikuphatikizidwa) ndi mphamvu ya screw bearing lead kuti mupeze liwiro lolunjika. Mtengo uwu uyenera kukhala wokulirapo kuposa mtengo wofunikira.

 

3. Dziwani kutalika kwa screw bearing ya mpira kutengera zosowa zenizeni. Kutalika konse = stroke yogwira ntchito + kutalika kwa nati + malire otetezeka + kutalika kwa kukhazikitsa + kutalika kwa kulumikizana + malire. Ngati chitetezo chowonjezera chawonjezeredwa, monga sleeve yoteteza, chiŵerengero cha elongation ya sleeve (nthawi zambiri 1:8, mwachitsanzo, elongation yayikulu ya sleeve yogawidwa ndi 8) chiyenera kuganiziridwa.

 

4. Dziwani molondola za screw bearing kutengera zosowa zenizeni. Pa makina wamba, C7 kapena yocheperako ndiyokwanira; pa zida zamakina za CNC, C5 ndiyofala kwambiri (yogwirizana ndi miyezo yapakhomo nthawi zambiri P5~P4 ndi P4~P3).

 

5. Dziwani mtundu wa mtedza wopangira screw kutengera momwe zinthu zilili komanso kukula kwake. Mtedza uli ndi mapangidwe ambiri, ndipo mapangidwe osiyanasiyana a mtedza ali ndi kukula kosiyana pang'ono. Sankhani malinga ndi momwe zinthu zilili; tikukulimbikitsani kuti musasankhe wapadera kwambiri, chifukwa kukonza ndi kusintha kungakhale kovuta ngati pakhala mavuto.

 

6. Sankhani ndi kusankha njira yoyikira (kutha).

 

7. Ganizirani zigawo zotsogolera ndi mphamvu yokhazikitsa.

 

Ndikofunikira kusankha malangizo a mzere wa mpira pazigawo zowongolera zomwe zimagwiritsidwa ntchito ndi ma bearing a screw ball. Zachidziwikire, kuphatikiza ma linear shafts ndi ma linear bearing ndi chisankho chotsika mtengo.

 

Makhalidwe a ma bereki othandizira a screw a mpira ndi awa:

 

1. Kugwira ntchito bwino kwambiri potumiza: Kugwira ntchito bwino kwa makina otumizira ma screw a mpira kumafika pa 90% ~ 98%, zomwe ndi nthawi 2 ~ 4 kuposa makina otumizira ma screw achikhalidwe. Chifukwa chake, imatha kuponderezedwa kwakukulu ndi torque yaying'ono ndipo imathanso kusintha kuyenda kolunjika kukhala kuyenda kozungulira (kuyenda kosinthika).

 

2. Kuyenda kosalala: Dongosolo lotumizira ma screw a mpira limagwiritsa ntchito kuyenda kozungulira komwe kumakhudza mbali, zomwe zimapangitsa kuti pakhale kukana kochepa, kukhudzidwa kwambiri, kusalankhula poyambira, komanso kukwawa pa liwiro lotsika. Chifukwa chake, imatha kuwongolera bwino chakudya cham'manja.

 

3. Kulondola kwambiri: Dongosolo lotumizira screw ya mpira limakumana ndi kutentha kochepa kwambiri panthawi yogwira ntchito ndipo limatha kukakamizidwa kale kuti lichotse kugwedezeka kwa axial ndikutambasulidwa kale kuti lithandizire kukula kwa kutentha, motero limapangitsa kuti malo azikhala olondola komanso obwerezabwereza.

 

4. Kulimba kwambiri: Malo olumikizirana a mipira yachitsulo ndi olimba (HRC58~63) ndipo amathiridwa bwino. Njira yoyendera magazi imakhala yozungulira, yokhala ndi kuwonongeka kochepa, zomwe zimapangitsa kuti ikhale nthawi yayitali komanso yogwira ntchito bwino. 5. Kuyanjanitsa Kwabwino Kwambiri: Chifukwa cha kuyenda kwake kosalala, kuyankha kwake momasuka, kusowa chotchinga, komanso kutsetsereka, machitidwe angapo ofanana a ball screw drive amatha kuyendetsa zinthu zingapo zofanana nthawi imodzi, zomwe zimapangitsa kuti pakhale kulumikizana kwabwino kwambiri.

 

6. Kudalirika Kwambiri: Poyerekeza ndi makina ena otumizira mauthenga ndi ma hydraulic transmission, makina oyendetsera ma screw a ball ali ndi vuto lochepa kwambiri ndipo ndi osavuta kusamalira, zomwe zimafuna mafuta ambiri komanso kupewa fumbi. Mu ntchito zapadera, amatha kugwira ntchito popanda mafuta.

 

7. Kusagwedezeka konse ndi Kulimba Kwambiri: Dongosolo loyendetsa screw ya mpira limagwiritsa ntchito mawonekedwe a groove ya Gothic arch, kuonetsetsa kuti mipira ndi groove zikulumikizana bwino kuti zikhale zosavuta kugwira ntchito. Kugwiritsa ntchito preload yoyenera kumachotsa axial backlash, kumawonjezera kulimba kwa mpira ndikuchepetsa kusintha kwa elastic pakati pa mipira, nati, ndi screw, zomwe zimapangitsa kuti zikhale zolondola kwambiri.

 

8. Kutumiza Kosadzitsekera Kokha, Kosinthika: Ma screw drive osinthika amakhala ndi liwiro lalikulu losinthika ndipo samadzitsekera okha. Kuti tipewe kuti screw pair isabwerere m'mbuyo pamene katundu wanyamula, zipangizo zotsutsana ndi kubwerera m'mbuyo ziyenera kuganiziridwa, monga kugwiritsa ntchito brake motor kapena stepper motor, kapena kuyika makina odzitsekera okha (monga, worm gear drive) mu transmission system; ma clutch a njira imodzi, ma clutch a njira ziwiri, kapena mabuleki ayenera kuyikidwa mu nati, lead screw, kapena transmission system. Posankha clutch, kudalirika kwake kuyenera kuganiziridwa mosamala. Kupewa kuleka kwa nati ndikofunikira kwambiri pakuyendetsa ma screw drive, makamaka ma vertical drive, chifukwa kuleka kwa nati kungayambitse ngozi mosavuta. Chifukwa chake, zida zotetezera kuti nati isalekane ziyenera kuphatikizidwa mu kapangidwe kake.