Motar ne mai matukar muhimmanci bangaren wuta a kan3D printer, daidaitonsa yana da alaƙa da sakamako mai kyau ko mara kyau na 3D, gabaɗayan bugu na 3D akan amfani da injin stepper.
Don haka akwai wasu firintocin 3D da ke amfani da injin servo? Yana da ban mamaki da gaske kuma daidai, amma me zai hana a yi amfani da shi akan firintocin 3D na yau da kullun?
Matsala ɗaya: yana da tsada sosai! Idan aka kwatanta da talakawa 3D firintocinku ba shi da daraja. Idan shi ne mafi alhẽri ga masana'antu firintocinku ne fiye ko žasa guda, iya inganta daidaito kadan.
Anan zamu dauki wadannan injina guda biyu, cikakken bincike na kwatance don ganin menene bambanci.
Ma'anoni daban-daban.
Motar Stepperna'urar motsi ce mai hankali, ta bambanta da na yau da kullun AC kumaDC Motors, Motoci na yau da kullun zuwa wutar lantarki don kunnawa, amma motar stepper ba haka bane, injin stepper shine karɓar umarni don yin mataki.
Motar Servo ita ce injin da ke sarrafa aikin kayan aikin injiniya a cikin tsarin servo, wanda zai iya sa saurin sarrafawa, daidaiton matsayi sosai, kuma yana iya canza siginar wutar lantarki zuwa juzu'i da sauri don fitar da abin sarrafawa.
Ko da yake su biyun suna kama da yanayin sarrafawa (ƙarashin bugun jini da siginar jagora), akwai manyan bambance-bambance a cikin amfani da aiki da lokutan aikace-aikacen. Yanzu kwatanta amfani da aikin biyu.
Daidaiton sarrafawa ya bambanta.
Mataki biyuhybrid stepper motorkusurwar mataki shine gabaɗaya, 1.8 °, 0.9 °
Matsakaicin sarrafa injin AC servo yana da garanti ta hanyar jujjuyawar rikodin a bayan mashin motar. Ga injin Panasonic cikakken dijital AC servo motor, alal misali, ga motar da ke da daidaitaccen layin layi na 2500, bugun bugun jini daidai yake 360°/10000=0.036° saboda fasahar mitar mitoci huɗu da ake amfani da ita a cikin tuƙi.
Ga motar da ke da encoder 17-bit, motar tana karɓar bugun jini 217 = 131072 a kowane juyi na motar, wanda ke nufin cewa bugunsa daidai yake 360 ° / 131072 = 9.89 seconds, wanda shine 1/655 na bugun bugun jini daidai da injin stepper tare da kusurwar mataki na 1.8 °.
Daban-daban halayen ƙananan mitoci.
Motar Stepper a ƙananan gudu zai bayyana yanayin girgiza mai ƙarancin mitar. Mitar girgiza tana da alaƙa da yanayin kaya da aikin tuƙi, kuma galibi ana ɗauka a matsayin rabin mitar farawa mara kaya.
Wannan ƙananan girgizar girgizar da aka ƙayyade ta hanyar ka'idar aiki na motar stepper yana da matukar illa ga aikin yau da kullum na na'ura. Lokacin da masu motsi na stepper ke aiki a ƙananan gudu, yakamata a yi amfani da fasahar damping gabaɗaya don shawo kan ƙarancin girgizar mitar, kamar ƙara dampers zuwa motar, ko amfani da fasahar yanki akan tuƙi.
Motar AC servo tana aiki sosai kuma baya girgiza koda da ƙananan gudu. Tsarin servo na AC yana da aikin dakatar da resonance, wanda zai iya rufe rashin ƙarfi na injin, kuma tsarin yana da aikin ƙuduri na mitar ciki, wanda zai iya gano ma'anar rawan injin da sauƙaƙe daidaita tsarin.
Ayyukan aiki daban-daban.
Kulawar motar Stepper ita ce sarrafa madauki mai buɗewa, tsayin mitar farawa ko babban nauyi yana da haɗari ga al'amuran ɓataccen matakai ko toshewa, saurin gudu lokacin da tsayawa yana da saurin jujjuyawa, don haka don tabbatar da daidaiton sarrafa shi, yakamata a magance matsalar saurin sama da ƙasa.
AC servo drive tsarin for rufaffiyar-madauki iko, direban iya kai tsaye samfurin da motor encoder feedback siginar, ciki abun da ke ciki na matsayi madauki da gudun madauki, kullum ba zai bayyana stepper motor hasãrar mataki ko overshoot sabon abu, da iko yi ne mafi m.
A taƙaice, tsarin AC servo a fannoni da yawa na aikin ya fi injin stepper. Amma a wasu lokatai masu ƙarancin buƙata kuma galibi suna amfani da injin stepper don yin injin kisa. Firintar 3D abu ne mai ƙarancin buƙata, kuma motar servo tana da tsada sosai, don haka zaɓi na gaba ɗaya na injin stepper.
Lokacin aikawa: Fabrairu-05-2023