Kule mihla, kubahlaseli bethu, kuxhaphake kakhulu ukulayisha iimotor ze-stepper ezine-axis efanayo ne-axis yazo-ingakumbi xa sizidibanisa nezikrufu zokukhokela okanye iigiya zeentshulube.Ngelishwa, ii-motor stepper azisetyenziswanga nyani kolu hlobo lomthwalo, kwaye ukwenza oko ngamandla amaninzi kuya kuyonakalisa imotor.Kodwa musani ukoyika.Ukuba uzifumana ukule meko, [iRobhothi yeVoind] ibonelela ngesisombululo esilula kakhulu kodwa esisebenzayo sokuphucula esivumela i-stepper motor yakho ukuba iphathe imithwalo ye-axial ngaphandle kwengxaki.
Kwimeko ye [Voind Robot's], baqala ngegiya leentshulube kwingalo yerobhothi.Kwimeko yabo, ingalo eshukumayo isenokufaka umthwalo omkhulu weaxial kwishafti yokunyathela ephuma kumbungu—ukuya kutsho kwiiNewtons ezingama-30.Umthwalo onjalo unokonakalisa ngokulula iibheringi zangaphakathi ze-stepper motor ngexesha elifutshane, ngoko bakhetha ukuqiniswa kwamacala amabini.Ukuphelisa le ngxaki, kwaqaliswa ii-thrust bearings ezimbini, enye kwicala ngalinye leshafti.Indima yale mibhobho ye-thrust kukudlulisa amandla ukusuka kwi-shaft ukuya kwi-motor housing, indawo eyomeleleyo yokufaka lo mthwalo.
Le ndlela yobugcisa ilula kakhulu, eneneni sele ingaphezu kweminyaka emihlanu.Nangona kunjalo, kusabaluleke kakhulu namhlanje kuye nawuphi na umenzi womshicileli we-3D oqwalasela ukudibanisa isikrufu sokukhokelela kwi-Z-axis stepper motor.Apho, i-thrust bearing enye inokuphelisa nawuphi na umdlalo we-axial kwaye ibangele ulwakhiwo oluqinileyo ngokubanzi.Sithanda ubulumko bokuyila koomatshini obulula ngolu hlobo.Ukuba ukhangela iingcebiso zoyilo lomshicileli, jonga [kaMoritz's] Inqaku Lomshicileli weWorkhorse.
Ewe, kwiminyaka embalwa eyadlulayo ndenze umshicileli owahlukileyo we-i3 obizwa ngokuba yi-i2 Samuel.Yenziwe ngokuthwala i-thrust ku-z ukuphelisa uxinzelelo kwi-stepper
Umthwalo ovumelekileyo we-axial weemotor ezininzi awugqithisi ubunzima *g.Ukuba ingaphezulu, uyilo lwakho luneziphene okanye aluqhelekanga, kwaye olu luqhele ukuba lolokuqala.
uluvo olulungile.Ngendlela, ngaba umntu unokundixelela apho ndingathenga khona iibheringi ezincinci?Ndinabalandeli abambalwa abaphambili ngeDoom™ rumble, kodwa basasebenza.
"Eli qhinga lilula kakhulu, sele lingaphezulu kweminyaka emihlanu."Ewe, ndiyavuma ukuba i-thrust bear yayilwa ngaphezu kweminyaka emihlanu eyadlulayo.
Iimotor zeStepper ngokubanzi zibonakala zinenqanaba elithile le-axial float kwishaft kwaye zixhonywe ngeewasha zasentwasahlobo.Oku kukugcina umthwalo we-axial kwi-bearing ngaphakathi kwenkcazo xa i-motor ishushu kwaye i-thermal yokwandisa iyenzeka.Ulungiselelo oluboniswe apha aluboneleli ukwanda kwe-thermal, ngoko kusenokubakho iingxaki zexesha elide kunye neebheringi zeemoto.Ubukho okanye ukungabikho kuya kuxhomekeka kwindawo ye-shaft apho i-thrust bear ifakwe khona.Ngokufanelekileyo, isixhobo sokutyhala siya kufumaneka sonke ekupheleni, kwaye esinye isiphelo siya kudada ngokukhululekileyo njengoko inxalenye isanda.Ngapha koko, kungcono ukufakela kuphela i-thrust bearing ekupheleni kwesiphumo, ngokusondeleyo kangangoko kunokwenzeka kwi-output bearing, kwaye uthembele kwi-original output ephetheyo ukulawula ukutyhala kwicala elingaphandle kwemoto.Ukucinga (ukubonisa) i-604 ephethe i-4mm shaft (endaweni ye-Nema23′s 6mm shaft), ngoko umthwalo we-radial radial ngu-360N kunye nomthwalo we-axial olinganisiweyo ngamaxesha angama-0.25 (i-0.5 amaxesha kwiibheringi ezinkulu).Ngoko ke isiphelo sesiphumo Ibhola yokuqala yegroove enzulu kufuneka isebenze, kunye nomthwalo we-axial we-90N.Kumzekelo onikiweyo (30N), ngokubhekiselele ekuzaleni ubomi, ngokwenene ayibonakali inkxalabo.Nangona kunjalo, i-axial float kwi-shaft ngokuchasene nentwasahlobo elayishwe kwangaphambili inokufuna ukulungiswa, kwaye i-thrust enye ephethe isiphelo sesiphumo inokukwenza oku.
Nangona kunjalo, kungcono ukuxhobisa intshulube ngeseti eyahlukileyo yeebheringi ze-thrust kwaye uvumele yonke i-motor ukuba idada nge-axially ngesixhobo esifanelekileyo sokuphendula i-torque.Eli lilungiselelo eliqhelekileyo apho i-motor iqhuba isikrufu sebhola kunye ne-angular contact bearing yayo iseti ngeLovejoy okanye ukudibanisa okufanayo.Nangona kunjalo, oku kongeza ubude obuninzi.
UAndy, ndiza kubhala into efanayo: Kubonakala ngathi wongeze iibheringi ngaphandle kwezithuba, enethemba lokuba iibheringi ezichanekileyo ziyakwazi ukumelana nomthwalo.
Ngumhlathi wokugqibela.Ngaphandle kokuba iibheringi ze-tapered roller okanye ii-angular contact ball bearings okanye ii-thrust bearings ezihlukeneyo zisetyenzisiwe, i-motor akufanele ithwale umthwalo omkhulu we-axial kwi-shaft yayo.
I-motor kufuneka iqhube i-shaft ngebhanti, igiya, i-elastic coupling okanye i-spline coupling.Ubunzima obukhulu bokudibanisa, ukuphakama kweemfuno zokuchaneka kwemoto yokulungelelaniswa kwe-shaft.
Vumelana, ilungiselelo elikhethiweyo apha linokuba yingozi kubomi benkonzo yemoto.Iibhodi zebhola zemoto ngokwayo kusenokwenzeka ukuba zisenomthwalo omkhulu.Ifoto ibonakala ibonisa indawo eyaneleyo yokuxhasa intshulube.Ukukhetha ukuxhasa intshulube kunye neebheringi ezi-2 zoqhagamshelwano lwe-angular kuzo zombini iziphelo kwaye uyiqhube nge-spline shaft okanye i-key shaft sele ingcono ukhetho, i-IMHO.Ukudibanisa okuguquguqukayo phakathi kukuphucula ngakumbi kuyo.
Ngaphambi kokuba uchukumise iwasha yasentwasahlobo ukuya ezantsi, i-ime stepper ayiyi kuthwala ngokwenene nawuphi na umthwalo we-axial, i-shaft kunye ne-bearing ikwi-sliding fit.
Kuxhomekeke kwi-stepper.Ndiphinde ndabona ukuba ukuba iiwashi zasentwasahlobo zixinzelelwe kude kakhulu, enye okanye zombini iibheringi zazo ziya kuthwala umthwalo we-axial.
Ke njengoko benditshilo, ukuba nje ungawubeki ngezantsi iwasha yasentwasahlobo, akusayi kubakho mthwalo ogqithisileyo we-axial ekuthwaleni.
Ewe, kodwa ezi zihlambi zasentwasahlobo zihlala zibuthathaka kakhulu, ngoko ke kwizicelo ezinjalo, unokuzibeka phantsi ngokulula.
@ThisGuy Esi sisitshixo sokuphosa iibheringi, zitshixa i-rotor embindini, ngoko ke iiwasha zasentwasahlobo azinakusebenza.
Ndiyazi ukuba yonke into iyazalana, kodwa andinakuzibamba kodwa ndifumane ubaxo apha lunika umdla-kwiyunithi yemveli, "umthwalo omkhulu we-axial ongaphezulu kweeponti ezintandathu"
Olu lukhetho olubi.Iibheringi ze-roller zisebenza kakuhle kuba zinciphisa ukukhuhlana ngokuqengqeleka endaweni yokutsala-ingxaki ekhoyo ngeebheringi zokutyhalwa ngenaliti kukuba isiphelo senaliti kwi-o/d sihamba ngokukhawuleza kune-i/d (ngaphandle kokuba inaliti i-tapered) Ewe, kuba uninzi lwezicelo, akukho mntu uziqwalaselayo).Ngokuqinisekileyo kukho iibheringi zokutyhalwa ngenaliti ene-tapered, kodwa lo mfo kungcono ukuba asebenzise iibheringi ze-spherical thrust endaweni-ngokusisiseko akanamda kumthwalo we-axial de ikhefu lokuthwala okanye i-gasket ifakwe ngaphakathi, okanye oku kuya kudlula iiponti ezi-6.
Ukongeza, emva kokumisela ukulayisha kwangaphambili okufanelekileyo kwi-spherical thrust bearing, phantse akanakuxhathisa ngeradial.Umbono olungileyo, ezinye izimvo zeengcali bezinokusetyenziswa.
Ubuvuvu bam, imbono yam kukuba usebenzise iibheringi zeenaliti ezithe ngqo, kodwa ezo gqatso zaseziko azibukeki njengenxalenye.
Ndiyathanda ukuxoxa ngalo lonke ulungelelwaniso kunye noseto olwahlukeneyo, kwaye ndiyathanda uthotho lwamanqaku agquma iirola ezithe thaca kunye neebheringi eziphothiweyo kwimizekelo yoyilo yokwenyani.Indikhumbuza ngelathe endiyilwayo.
Ukusuka nje kumfanekiso, ukuba kunokwenzeka, ndiza kubeka inkxaso ekupheleni kwe-shaft ye-stepper.Uninzi lwamandla okugqoka kunye nomthwalo wecala unokusingathwa ngcono ngenkxaso kwindawo yokuphambuka kwecala eliphezulu.
Ukuvumelana namagqabantshintshi malunga neebheringi ze-tapered roller, i-lathe spindle izisebenzisa ngazibini ezilayishwe ngaphambili ngaphambili kuba ziyilelwe ukumelana nemithwalo ye-axial kunye necala, kanye njengegiya leentshulube apha livelisa.
Ngaba banokusebenzisa i-servo flexible coupling, i-spider coupling, okanye iplam coupling ukwahlula ishafti ye-stepper motor kwishafti eqhuba izixhobo zeentshulube?Andiqinisekanga malunga nomthwalo we-torsional abajongene nawo.Okanye mhlawumbi igiya ye-1:1?
Emva koko banokukhokelela amandla kwisakhelo sokunyuswa kwemoto phantse akukho mandla kwi-stepper shaft.
Kufuneka usebenzise iibheringi ezinokwamkela imithwalo elindelekileyo ye-thrust (uqhagamshelwano lwe-angular, i-taper, i-thrust, njl.), kunye neebhola okanye izikrufu ze-trapezoidal kuyo nayiphi na imeko.Iinqwelo zeemoto ngokuqhelekileyo azikwazi ukumelana nemithwalo enjalo, kwaye ukungaphumeleli ukuxhasa ngokufanelekileyo i-screw kuya kuba nefuthe elibi ekuchanekeni.Ngokufanelekileyo, i-screw positioning assembly yi-100% yokuzimela, akukho mfuneko yokudibanisa kwi-motor, i-motor inikeza kuphela i-torque.Lolo Luyilo loMatshini 101. Ukuba umthwalo ungaphakathi kwenkcazo, unokuwuyeka ukuthwala i-thrust, kodwa kuqhelekile ukuba sisenzo esibi ukwenza njalo, kuba umthwalo wokutyhala unokubangela ukuba amacandelo angaphakathi enjini angalungelelanisi, nto leyo echaphazela ukusebenza kakuhle. .Jonga nje nakuphi na ukuthwala ibhola eqhelekileyo kwaye ujonge umthwalo owamkelekileyo wokutyhala, unokumangaliswa ukuba umncinci kangakanani umthwalo wokutyhala kwiimeko ezininzi.
Ekubeni kungekho qhosha lokuhlela, ndongeze ukuba kwiimeko ezininzi, ngokuxhomekeke kwinqanaba lokuchaneka oyifunayo, izixhobo zeentshulube ezisetyenziselwa zonke iinjongo kunye neenjongo zinokuthathwa njengeebhola okanye izikrufu ze-conical, kuba amandla aphantse akwicala elinye. .
Umthwalo kwi-worm gear yahluke kakhulu kumthwalo kwi-Acme okanye i-ball screw.Ekubeni i-Acme kunye nezikrufu zebhola zisetyenziswa ngamantongomane apheleleyo, umthwalo uphantse ube yi-axial emsulwa.Umbungu usebenza kuphela kwigiya kwelinye icala, ngoko kukho umthwalo weradial.
Ndiza kuhamba ngenye indlela, kwaye abantu abaninzi baya kumangaliswa kukufumanisa ukuba mkhulu kangakanani umthamo we-axial wokuthwala ibhola.Ubuncinci i-25% yomthwalo we-radial, i-50% yecandelo elinzima / ukuthwala okukhulu.
Nokuba yeyiphi na imeko, ukuba awukhathali ukwenza bufutshane ubomi bokuzala kunye nokusilela okunokubakho kwintlekele, nceda uqhubeke nokusebenzisa iibheringi zebhola ezisemgangathweni ukujongana nemithwalo!I-FWIW, xa i-standard yebhola ephethe i-thrust load, indawo yoqhagamshelwano iyancipha kakhulu.Ukuba ubungakanani bokuthwala bukhulu ngokwaneleyo, awukwazi ukubona into enzulu okanye eyingozi, kodwa oku akuqhelekanga, ngakumbi xa iindawo zakho "zingabizi".
Ngoku uchasene noko.Ukuba umenzi othweleyo uthi ufanelekile kumthwalo weradial we-x Newton, lubalulo olo.
Amanani am asekelwe kwisikhokelo se-intanethi se-SKF.Basenokuyazi indawo yabo ngcono kunawe.Ukuba ukhetha iingxoxo ezingakhethiyo ze-anecdotal: iibheringi zamavili zesithuthuthu zipere yeebhola ezinzulu zegroove, zibona amandla kuzo zonke iinkalo phantse ngokungakhethiyo, kwaye zingasetyenziswa ixesha elide.Ndiqhube ubuncinane iimayile ezingama-120,000 kuvavanyo lwam.
Ukungagqibeki "ukuthwala ibhola" yibhola enzulu.Ukuba ayikho enye into, yibhola enzulu.Bona iindidi apha.https://simplybearings.co.uk/shop/Products-All-Bearings/c4747_4514/index.html
Ngokusebenzisa iwebhusayithi yethu kunye neenkonzo, uvumelana ngokucacileyo nokubekwa kwenkqubo yethu, ukusebenza kunye neekuki zentengiso.Funda nzulu