Ma Roller Screw Actuators: Mapangidwe ndi Ntchito

Ma electromechanical actuators amabwera m'mitundu yambiri, ndi njira zoyendetsera wambazomangira kutsogolo, zomangira za mpira, ndi zomangira. Wopanga kapena wogwiritsa ntchito akafuna kusintha kuchokera ku ma hydraulics kapena pneumatics kupita ku electromechanical motion, ma roller screw actuators nthawi zambiri amakhala abwino kwambiri. Amapereka magwiridwe antchito ofanana ndi ma hydraulics (mphamvu yayikulu) ndi ma pneumatics (kuthamanga kwambiri), munjira yocheperako.

A wodzigudubuzam'malo mwa mipira yobwerezabwereza yokhala ndi ulusi wodzigudubuza.Mtedzawu uli ndi ulusi wamkati womwe umafanana ndi ulusi wa screw. Ma rollers amapangidwa mu a makonzedwe a mapulaneti ndipo onse awiri amazungulira nkhwangwa zawo ndikuzungulira mozungulira nati. Mapeto a odzigudubuza ali ndi mano kuti agwirizane ndi mphete zamtundu uliwonse kumapeto kwa nati, kuonetsetsa kuti odzigudubuza amakhalabe mumayendedwe angwiro, ofanana ndi axis a screw ndi nati.

Chodzigudubuza ndi mtundu wa screw drive yomwe imalowa m'malo mwa mipira yozungulira ndi zodzigudubuza. Malekezero a odzigudubuza ali ndi mano kuti agwirizane ndi mphete zokhazikika kumapeto kwa mtedza. Zodzigudubuza zonse zimazungulira nkhwangwa zawo ndikuzungulira nati, mwadongosolo la mapulaneti. (Ichi ndi chifukwa chake zomangira zozungulira zimatchedwanso zomangira zozungulira mapulaneti.)

Ma geometry a screw screw amapereka malo olumikizana kwambiri kuposa momwe angathere ndi ampira wodula. Izi zikutanthauza kuti zomangira zodzigudubuza nthawi zambiri zimakhala ndi mphamvu zosunthika kwambiri komanso zolimba kuposa zomangira zampira zofanana. Ndipo ulusi wabwino (phokoso) umapereka mwayi wamakina apamwamba, kutanthauza kuti torque yocheperako imafunikira pa katundu woperekedwa.

Ubwino wopangira zomangira zomangira (pansi) pamwamba pa zomangira za mpira (pamwamba) ndikutha kukhala ndi malo olumikizirana ambiri pamalo amodzi.

Chifukwa zogudubuza zawo zonyamula katundu sizimalumikizana, zomangira zimatha kuyenda mothamanga kwambiri kuposa zomangira za mpira, zomwe zimalimbana ndi mphamvu ndi kutentha komwe kumabwera chifukwa cha mipira yomwe ikuwombana wina ndi mnzake komanso zotsekera kumapeto.

Zomangira zopindika

Mapangidwe otembenuzidwa amagwira ntchito mofanana ndi screw roller, koma mtedzawo umatembenuzidwa mkati-kunja. Chifukwa chake, mawu oti "zozungulira zopindika". Izi zikutanthauza kuti odzigudubuza amazungulira mozungulira wononga (m'malo mwa nati), ndipo wonongazo zimangoponyedwa pamalo omwe odzigudubuza amazungulira. Natiyo, motero, imakhala njira yodziwira kutalika, motero nthawi zambiri imakhala yayitali kuposa mtedza womwe uli pa screw screw. Mwina screw kapena nati itha kugwiritsidwa ntchito ngati chopondera, koma ma actuator ambiri amagwiritsa ntchito screw pachifukwa ichi.

Kupanga masirawu opindika kumabweretsa vuto lopanga ulusi wolondola kwambiri wa nati kwa utali wautali, zomwe zikutanthauza kuti kuphatikiza kwa makina kumagwiritsidwa ntchito. Zotsatira zake ndikuti ulusiwo ndi wofewa, chifukwa chake, kuchuluka kwa zomangira zopindika kumakhala kotsika poyerekeza ndi zomangira zokhazikika. Koma zomangira zopindika zimakhala ndi phindu lophatikizika kwambiri.