Joalo ka e 'ngoe ea li-fasteners tsa mantlha, ts'ebetso ea screw e ama ka kotloloho ho ts'epahala, ho tšoarella, le polokeho ea meaho ea mochini. Ho tloha ho mahlale a lisebelisoa tse nyane ho isa lits'ebetsong tsa boenjineri ba macroscopic, ts'ebetso ea screw e akaretsa litekanyo tse ngata, ho kenyeletsoa thepa ea mochini, ho ikamahanya le maemo tikolohong, le ho nepahala ha tlhahiso. Letšoao le leng le le leng le hloka moralo o tiileng le netefatso.
I. Mehaho ea Mochini ea Motheo: Tekanyo lipakeng tsa Matla le Mojaro
Mosebetsi oa mantlha oa screw ke ho fetisa le ho jara mojaro, ho etsa hore thepa ea eona ea mochini e be ea bohlokoa bakeng sa tlhahlobo. Matla a tsitsitseng le matla a ho kotula a etsa qeto ea hore na screw e sebetsa joang tlas'a tsitsipano ea axial. Mohlala, -likurufu tsa tšepe tsa alloy tse phahameng (mohlala, kereiti ea 8.8 le holimo) li ka mamella likhatello tsa li-megapascal tse makholo 'me li loketse lienjine tsa makoloi kapa meaho ea sepakapaka. Ka lehlakoreng le leng, matla a shear a susumetsa botsitso ba eona tlas'a matla a mahlakoreng 'me hangata a fumanoa ka likhokahano tse tšesaane tsa poleiti. Ho feta moo, matla a mokhathala a laola nako ea bophelo ea screw tlas'a meroalo e pheta-phetoang. Ka mohlala, li-screws tse ka har'a li-bridge bearings li tlameha ho mamella makhetlo a limilione a liteko ho qoba ho hlōleha ho kotsi ho bakoang ke ho ata ha microcrack.
II. Khetho e nepahetseng ea Mahlale a Lintho
Motheo oa ts'ebetso ea screw o holim'a khetho ea eona ea thepa. Carbon steel (joaloka Q235) e theko e tlase-'me e bonolo ho e etsa mochini, empa e rusa ha bonolo 'me e hloka electroplating kapa galvanizing. Stainless steel (joalo ka 304/316) e khona ho mamella ho bola ka lebaka la filimi ea eona ea chromium-nickel alloy passivation mme e sebelisoa haholo lisebelisoa tsa bongaka le tikolohong ea leoatle. Likurufu tsa Titanium alloy li ratoa indastering ea sepakapaka ka lebaka la boima ba tsona bo bobebe le matla a holimo-ho{9}}karolelano ea boima ba 'mele, empa li thata haholo ebile li bitsa chelete e ngata mochining. Lilemong tsa morao tjena, li-screws tse kopantsoeng (tse kang carbon fiber reinforced plastic) li qalile ho sebelisoa thepa ea elektronike ho fokotsa boima ba 'mele le phetisetso ea ho sisinyeha.
III. Liqholotso le Khatelo-pele ea ho Ikamahanya le Boemo ba Tikoloho
Libaka tse feteletseng li beha litlhoko tse khethehileng mosebetsing oa screw. Libakeng tse -mocheso o phahameng (joaloka litsamaiso tsa mouoane oa enjene), likurufu li tlameha ho etsoa ka tšepe-e sa keneleng mocheso (joalo ka Inconel 718), e hanyetsanang le oxidation e fetang likhato tse 800 . Litikolohong tse tlase-mocheso (joalo ka litanka tsa polokelo ea khase ea tlhaho e kentsoeng), tšepe e tloaelehileng e tla robeha ka lebaka la brittle transition, e leng ho etsang hore ho hlokahale hore ho sebelisoe tšepe e sa hloekang ea austenitic kapa li-alloys tsa nickel{7}. Ho loantša ho bola ha lik'hemik'hale, ho phaella ho galvanizing ea setso, ho roala ha Dacromet kapa ho kenngoa ha PTFE (Teflon) ho ka matlafatsa ho hanyetsa ha letsoai.
IV. Ho Nepaha ha Geometri le Litlhahiso tsa Ts'ebetso
Ho nepahala ha khoele ea screw (mohlala, boemo ba ISO ba mamello), sebopeho sa hlooho (hexagon socket/cross recess), le kalafo ea bokaholimo e ama ka kotloloho katleho ea kopano le katoloso ea tšebetso. Ka mohlala,{3}} li-screws, ka lebaka la moralo oa tsona o khethehileng oa khoele, li ka phunyeletsa ka ho toba lisebelisoa tsa polasetiki (joalo ka polasetiki kapa letlapa le tšesaane la aluminiamo), ho felisa tlhoko ea ho cheka pele-. Li-screws tse notlelang (joalo ka lintho tse kenngoeng ka nylon kapa li-washer tsa selemo) li thibela ho lokoloha ka lebaka la ho thothomela ka lebaka la ho ferekana. Ka mokhoa o lebisang ho miniaturization, li-screws tsa bongaka li ka fihla bophara bo ka tlase ho 1mm, tse hlokang theknoloji ea micromachining ho netefatsa ts'ebetso e tsitsitseng.
V. Litaelo tsa Bokamoso: Bohlale le Moshoelella
Ka nts'etsopele ea indasteri ea 4.0, li-screws tse bohlale li se li qala ho kenyelletsa li-sensor (joalo ka li-sensors tsa khatello kapa li-sensor tsa mocheso) ho beha leihlo bophelo bo botle ba sebopeho ka nako ea nnete. Li-screws tse ka senyehang (tse kang tse entsoeng ka metsoako ea magnesium) butle-butle li nkela li-implants tsa tšepe sebaka sa ho buuoa ka masapo, li qoba ho buuoa ka bobeli. Ka nako e ts'oanang, ho fokotsa ts'ebeliso ea thepa ka moralo oa topological optimization kapa ho sebelisa litšepe tse nchafalitsoeng e se e le sepheo sa mantlha sa tlhahiso e tala.
Ho sa tsotellehe boholo ba tsona bo nyenyane, li-screws ke majoe a sekhutlo a li-system tsa mechine. Ntlafatso ea ts'ebetso ea bona ha e itšetlehe feela ka tsoelo-pele ea theknoloji e le 'ngoe empa hape le ntlafatsong ea tšebelisano-mmoho ho pholletsa le lithuto tse ngata, ho kenyeletsoa mahlale a thepa, moralo oa mechini le boenjineri ba bokaholimo. Lits'ebetsong tse ntseng li tsoela pele ho rarahana le tse hlokang, phetoho e 'ngoe le e 'ngoe ea likurufu e sutumelletsa meeli ea bokhoni ba boenjiniere ba batho.
