Namuhla, kubaduni bethu, kuvame kakhulu ukulayisha ama-stepper motors ane-eksisi efanayo ne-eksisi yawo-ikakhulukazi lapho siwaxhuma kuzikulufu zokuhola noma amagiya wezikelemu.Ngeshwa, ama-stepper motors awasetshenziswa ngempela kulolu hlobo lomthwalo, futhi ukwenza kanjalo ngamandla amaningi kuzolimaza injini.Kodwa ungesabi.Uma uzithola ukulesi simo, i-[Voind Robot] ikunikeza isisombululo sokuthuthukisa esilula kakhulu kodwa esisebenza ngempumelelo esivumela i-stepper motor yakho ukuthi ibambe imithwalo ye-axial ngaphandle kwezinkinga.
Endabeni ye [Voind Robot], baqale ngegiya lezikelemu engalweni yerobhothi.Endabeni yabo, ingalo enyakazayo ingase ifake umthwalo omkhulu we-axial endaweni yokunyathela phakathi kwesikelemu—ama-Newtons angaba ngu-30.Umthwalo onjalo ungalimaza kalula ama-bearings angaphakathi we-stepper motor ngesikhathi esifushane, ngakho-ke bakhetha ukuqiniswa okuphindwe kabili.Ukuze kuncishiswe le nkinga, kwethulwa ama-thrust bearings amabili, elilodwa ohlangothini ngalunye lwe-shaft.Indima yalawa ma-thrust bearings ukudlulisa amandla ukusuka ku-shaft kuya endlini yezimoto, okuyindawo eqinile yokufaka lo mthwalo.
Le nqubo ilula kakhulu, empeleni sekuyiminyaka engaphezu kwemihlanu.Noma kunjalo, kusabaluleke kakhulu namuhla kunoma yimuphi umkhiqizi wephrinta ye-3D ecabangela ukuxhuma isikulufu sokuhola ku-Z-axis stepper motor.Lapho, i-thrust bear eyodwa ingaqeda noma yikuphi ukudlala kwe-axial futhi ibangele ukwakhiwa okuqinile okuphelele.Sithanda ubuhlakani bokuklama umshini olula kanje.Uma ufuna amathiphu edizayini yephrinta engeziwe, hlola isihloko [sikaMoritz] Workhorse Printer.
Yebo, eminyakeni embalwa edlule ngenza iphrinta ehlukile ye-i3 ebizwa ngokuthi i-i2 Samuel.Yakhelwe nge-thrust bear on z ukususa ingcindezi ku-stepper
Umthwalo we-axial ovumelekile wamamotho amaningi anyathelayo aweqi ubukhulu *g.Uma kungaphezulu, idizayini yakho inephutha noma iyimfundamakhwela, futhi lokhu kuvamise ukuba ngeyokuqala.
umbono omuhle.Kodwa-ke, kukhona ongangitshela ukuthi ngingawathenga kuphi ama-bearings amancane?Nginabalandeli abambalwa ababalulekile abane-Doom™ rumble, kodwa basasebenza.
"Leli qhinga lilula kakhulu, empeleni sekuneminyaka engaphezu kwemihlanu."Yebo, ngiyavuma ukuthi i-thrust bear yasungulwa eminyakeni engaphezu kwemihlanu edlule.
Ama-Stepper motors ngokuvamile abonakala enezinga elithile lokuntanta kwe-axial ku-shaft futhi ahlanganiswe namawasha asentwasahlobo.Lokhu okokugcina umthwalo we-axial ekuthwaleni ngaphakathi kokucaciswa lapho i-motor ishisa futhi kwenzeka ukwanda okuhlukile kokushisa.Ukuhlelwa okuboniswe lapha akuhlinzeki ngokunwetshwa kwe-thermal, ngakho-ke kungase kube nezinkinga zesikhathi eside ngama-motor bearings.Ukuba khona noma ukungabikho kuzoncika endaweni ye-shaft lapho i-thrust bear ifakwe khona.Ngokufanelekile, i-thrust device izotholakala yonke ekugcineni, kanti enye izontanta ngokukhululeka njengoba ingxenye ikhula.Eqinisweni, kuhle kakhulu ukufaka kuphela i-thrust bear ekugcineni kokukhiphayo, eduze kakhulu ngangokunokwenzeka endaweni ephethe okukhiphayo, bese uncika ekukhiqizweni koqobo ukuze ulawule ukusunduza ohlangothini olungaphandle kwenjini.Uma ucabanga (ukubonisa) i-604 ethwele nge-4mm shaft (esikhundleni se-Nema23′s 6mm shaft), khona-ke umthwalo we-radial radial ngu-360N kanye nomthwalo we-axial olinganiselwe izikhathi ezingu-0.25 (izikhathi ezingu-0.5 zama-bearings amakhulu).Ngakho-ke ukuphela kokuphumayo Ibhola lokuqala legroove elijulile kufanele lisebenze, ngomthwalo we-axial ongu-90N.Esibonelweni esinikeziwe (30N), mayelana nokuphila okuzalayo, empeleni akubonakali njengokukhathazayo.Kodwa-ke, ukuntanta kwe-axial ku-shaft ngokumelene nesiphethu esilayishwe ngaphambili kungase kudinge ukubhekwa, futhi i-thrust eyodwa ephethe ekugcineni kokuphumayo ingenza lokhu.
Kodwa-ke, kungcono ukuhlomisa isibungu ngesethi ehlukile yama-thrust bearings futhi uvumele yonke injini ukuthi intante nge-axially ngedivayisi yokusabela ye-torque efanelekile.Lokhu kuwuhlelo oluvamile lapho injini ishayela isikulufu sebhola esinophawu lwaso lwe-angular olusethwe nge-Lovejoy noma ukuhlanganisa okufanayo.Nokho, lokhu kwengeza ubude obuningi obengeziwe.
U-Andy, ngizobhala into efanayo: Ubonakala engeze ama-bearings ngaphandle kwezikhala, enethemba lokuthi ama-bearings alungile angakwazi ukumelana nomthwalo.
Yisigaba sokugcina.Ngaphandle uma kusetshenziswa amabhere e-roller tapered noma ama-angular contact ball bearings noma ama-thrust bearings ahlukene asetshenziswa, injini akufanele ithwale umthwalo omkhulu we-axial ku-shaft yayo.
I-motor kufanele ishayele i-shaft ngebhande, igiya, i-elastic coupling noma i-spline coupling.Uma kukhulu ukuqina kokuhlangana, kukhuphuka izimfuneko zokunemba zenjini yokuqondisa ku-shaft.
Vumelana, ilungiselelo elikhethwe lapha lingase libe yingozi empilweni yesevisi yenjini.Amabhola e-motor ngokwawo kungenzeka ukuthi asathwele umthwalo omkhulu.Isithombe sibonakala sibonisa isikhala esanele sokusekela isibungu.Ukukhetha ukusekela isibungu esinama-angular ama-2 ama-angular emikhawulweni yomibili bese usishayela ku-spline shaft noma ukhiye wokhiye sekuvele kuyisinqumo esingcono, i-IMHO.Ukuhlangana okuguquguqukayo phakathi nendawo kuyintuthuko eyengeziwe kukho.
Ngaphambi kokuthi uthinte iwasha yasentwasahlobo phansi, i-stepper ye-ime ngeke ithwale noma yimuphi umthwalo we-axial, i-shaft kanye ne-bearing ku-sliding fit.
Kuya ngesitebhisi.Ngibonile futhi ukuthi uma ama-washer entwasahlobo ecindezelwe kude kakhulu, eyodwa noma womabili ama-bearings awo azothwala umthwalo we-axial.
Ngakho-ke njengoba ngishilo, inqobo nje uma ungabeki phansi iwasha yasentwasahlobo, ngeke kube nomthwalo we-axial owedlulele ekuthwaleni.
Yebo, kodwa lawa mawasha asentwasahlobo ngokuvamile antekenteke kakhulu, ngakho-ke ezinhlelweni ezinjalo, ungawabeka kalula.
@ThisGuy Isihluthulelo se-thrust bearings, bakhiyela i-rotor phakathi nendawo, ngakho-ke ama-spring washers awasoze asebenza
Ngiyazi ukuthi yonke into ihlobene, kodwa angikwazi ukuzibamba kodwa ngithola ihaba lapha lithakazelisa kancane-kuyunithi yendabuko, "umthwalo omkhulu we-axial ongaphezu kwamaphawundi ayisithupha"
Lokhu ukukhetha okubi.Ama-roller bearings asebenza kahle ngoba anciphisa ukungqubuzana ngokugingqika esikhundleni sokuhudula-inkinga engokwemvelo ngamabhodlela enaliti e-roller thrust bearings ukuthi isiphetho senaliti ku-o/d sihamba ngokushesha kune-i/d (ngaphandle uma isici senaliti sicishiwe) Yebo, ngoba izicelo eziningi, akekho ozicabangelayo).Kunjalo kukhona tapered inaliti roller thrust bearings, kodwa lo mfana kungcono ukusebenzisa i-spherical thrust bearings esikhundleni-yena ngokuyisisekelo akanawo umkhawulo kumthwalo axial kuze kube yilapho ukuthwala ikhefu noma i-gasket iboshiwe, noma lokhu kuzodlula amakhilogremu angu-6.
Ngaphezu kwalokho, ngemva kokusetha ukulayisha kuqala okufanele ku-spherical thrust bear, cishe akanakho ukumelana ne-radial.Umbono omuhle, eminye imibono yochwepheshe ibingase isetshenziswe.
Umbhedo wami, umbono wami ukuthi usebenzise ama-straight needle roller bearings, kodwa leyo mijaho emaphakathi ayibukeki njengezingxenye.
Ngithanda ukuxoxa ngakho konke ukucushwa kwama-bearings ahlukene kanye nezilungiselelo, futhi ngithanda uchungechunge lwama-athikili amboza amarola anama-tapered nama-thrust bearings ezibonelweni zangempela zokuklama.Ingikhumbuza i-lathe engiyiklamayo.
Kusukela nje esithombeni, uma kungenzeka, ngingabeka isisekelo ekugcineni kwe-shaft ye-stepper.Iningi lamandla okugqoka kanye nomthwalo oseceleni lingaphathwa kangcono ngokusekelwa endaweni yokuchezuka okukhulu kwe-lateral.
Ivumelana namazwana mayelana nama-roller bearings tapered, i-lathe spindle iwasebenzisa ngamapheya alayishwe ngaphambili ngaphambili ngenxa yokuthi aklanyelwe ukumelana nomthwalo we-axial kanye ne-lateral, njengoba nje kukhiqizwa igiya lezikelemu lapha.
Bangakwazi yini ukusebenzisa i-servo flexible coupling, i-spider coupling, noma iplamu coupling ukuze bahlukanise umphini we-stepper motor ku-shaft oshayela igiya lezikelemu?Abanaso isiqiniseko ngomthwalo we-torsional ababhekene nawo.Noma mhlawumbe igiya elingu-1:1?
Ngemva kwalokho bangakwazi ukuqondisa amandla ohlakeni lokukhweza injini cishe ngaphandle kwamandla ku-stepper shaft.
Kufanele usebenzise ama-bearings angamukela imithwalo ye-thrust elindelekile (i-angular contact, taper, thrust, njll.), ngamabhola noma izikulufu ze-trapezoidal kunoma yikuphi.Ama-motor bearings ngokuvamile awakwazi ukumelana nemithwalo enjalo, futhi ukwehluleka ukusekela kahle isikulufu kuzoba nomthelela omubi ekunembeni.Ngokufanelekile, umhlangano wokumisa isikulufa uzisekela ngo-100%, asikho isidingo sokuxhuma injini, i-motor inikeza i-torque kuphela.Lokho Ukuklama Komshini 101. Uma umthwalo ungaphakathi kokucaciswa, ungashiya i-thrust bear, kodwa ngokuvamile kuwumkhuba omubi ukwenza kanjalo, ngoba umthwalo we-thrust ungase ubangele izingxenye zangaphakathi zenjini ukuthi zingahambi kahle, ngaleyo ndlela kuphazamise ukusebenza. .Vele ubheke noma yiliphi izinga elijwayelekile lebhola bese uhlola umthwalo owamukelekayo wokuphonswa, ungase umangale ukuthi mncane kangakanani umthwalo we-thrust olinganiselwe ezimweni eziningi.
Njengoba ingekho inkinobho yokuhlela, ngiphinde ngengeza ukuthi ezimweni eziningi, kuye ngezinga lokunemba olidingayo, amagiya wezibungu asetshenziselwa zonke izinhloso nezinhloso angabhekwa njengamabhola noma izikulufu ze-conical, ngoba amandla acishe abe ohlangothini olufanayo. .
Umthwalo wegiya lezikelemu uhluke kakhulu kumthwalo okwi-acme noma isikulufu sebhola.Njengoba i-Acme ne-screws yebhola isetshenziswa ngamantongomane agcwele, umthwalo ucishe ube yi-axial kuphela.Isibungu sisebenza kuphela egiyeni ohlangothini olulodwa, ngakho-ke kukhona umthwalo we-radial.
Ngizohamba ngenye indlela, futhi abantu abaningi bazomangala ukuthola ukuthi mkhulu kangakanani umthamo we-axial wokuthwala ibhola.Okungenani u-25% we-radial load, u-50% wesigaba esindayo/ukuthela okukhulu.
Kunoma ikuphi, uma ungenandaba nokufushanisa kakhulu impilo yokuzala kanye nokwehluleka okungaba yinhlekelele, sicela uqhubeke nokusebenzisa ama-ball bearings ukuze ubambe imithwalo ye-thrust!I-FWIW, lapho ibhola elijwayelekile lithwala umthwalo we-thrust, indawo yokuxhumana iyancipha kakhulu.Uma ubukhulu be-bearing bukhulu ngokwanele, ungase ungaboni lutho olubucayi noma oluyingozi, kodwa lokhu akuyona into evamile, ikakhulukazi uma izingxenye zakho "zishibhile".
Manje usuphambene nje.Uma umkhiqizi ophethe ethi iwufanele umthwalo weradial we-x Newton, lokho kucaciswa.
Izibalo zami zisekelwe kumhlahlandlela we-inthanethi we-SKF.Bangase bazi indawo yabo kangcono kunawe.Uma ukhetha ama-agumenti angahleliwe: amasondo esithuthuthu angamabhola ama-deep groove, abona amandla kuzo zonke izinkomba cishe ngokungahleliwe, futhi angasetshenziswa isikhathi eside.Ngishayele okungenani amamayela ayi-120,000 ekuhlolweni kwami.
Okuzenzakalelayo "ukuthwala ibhola" kuyibhola elijulile.Uma kungeyona enye into, yibhola le-groove elijulile.Bona izigaba lapha.https://simplybearings.co.uk/shop/Products-All-Bearings/c4747_4514/index.html
Ngokusebenzisa iwebhusayithi yethu namasevisi, uvumelana ngokusobala nokubekwa komsebenzi wethu, ukusebenza namakhukhi okukhangisa.Funda kabanzi