Ho kopanya tepi e lohiloeng, ho overmolding le ho notlela sebopeho, herone e hlahisa sekhechana se le seng, se nang le torque e phahameng ea gear-driveshaft e le pontšo bakeng sa mefuta e mengata ea lits'ebetso.
Gear-driveshaft e kopaneng e kopaneng.Herone e sebelisa litheipi tsa prepreg tse lohiloeng tsa thermoplastic e le li-preforms bakeng sa ts'ebetso e kopanyang laminate ea driveshaft le ho fetelletsa lintho tse sebetsang joalo ka likere, ho hlahisa meaho e kopaneng e fokotsang boima ba 'mele, palo ea karolo, nako ea kopano le litšenyehelo.Mohloli oa litšoantšo tsohle |mohale
Likhakanyo tsa hajoale li hloka ho imena habeli ha likepe tsa lifofane tsa khoebo lilemong tse 20 tse tlang.Ho sebetsana le sena, litefiso tsa tlhahiso ka selemo sa 2019 bakeng sa lijetli tse nang le mefuta e mengata e fapaneng li fapana ho tloha ho 10 ho isa ho 14 ka khoeli ka OEM, ha li-narrowbodies li se li nyolohetse ho 60 ka khoeli OEM ka 'ngoe.Airbus ka ho khetheha e sebetsa le bafani ba thepa ho chencha likarolo tsa setso empa li le nako e telele, ho bea matsoho pele ho A320 ho ea likarolo tse entsoeng ka nako e potlakileng, ea metsotso e 20 joalo ka mokhoa o phahameng oa khatello ea resin transfer (HP-RTM), ka hona e thusa karolo. barekisi ba kopana le sepheo se seng sa lifofane tse 100 ka khoeli.Ho sa le joalo, 'maraka o ntseng o tsoela pele oa ho tsamaea ka moea oa litoropong le oa lipalangoang o bolela esale pele tlhokahalo ea lifofane tse 3,000 tsa motlakase tse otlolohileng le tse lulisang (EVTOL) ka selemo (250 ka khoeli).
"Indasteri e hloka theknoloji ea tlhahiso e ikemetseng e nang le nako e khuts'oane ea potoloho e lumellang ho kopanya mesebetsi, e fanoang ke li-composites tsa thermoplastic," ho bolela Daniel Barfuss, mothehi-'moho le molekane ea laolang oa herone (Dresden, Jeremane), theknoloji e kopanyang le ho etsa likarolo. feme e sebelisang lisebelisoa tse phahameng tsa thermoplastic matrix ho tloha polyphenylenesulfide (PPS) ho ea polyetheretherketone (PEEK), polyetherketoneketone (PEKK) le polyaryletherketone (PAEK)."Sepheo sa rona se seholo ke ho kopanya ts'ebetso e phahameng ea li-composites tsa thermoplastic (TPCs) le litšenyehelo tse tlase, ho thusa likarolo tse lokiselitsoeng bakeng sa mefuta e mengata e fapaneng ea likopo tsa tlhahiso ea serial le lits'ebetso tse ncha," ho eketsa Dr. Christian Garthaus, mothehi-'moho le eena oa bobeli oa herone. molekane.
Ho fihlela sena, k'hamphani e hlahisitse mokhoa o mocha, ho qala ka litheipi tse kentsoeng ka botlalo, tse tsoelang pele, ho loha litheipi tsena ho etsa "organoTube" e se nang letho le ho kopanya li-organoTube hore e be liprofaele tse nang le likarolo tse fapaneng le libopeho tse fapaneng.Mohatong o latelang oa ts'ebetso, e sebelisa ho cheseha le thermoformability ea li-TPC ho kopanya likarolo tse sebetsang joalo ka likere tse kopaneng ho li-driveshafts, li-fittings liphaepheng, kapa likarolo tsa phetisetso ea mojaro ho li-struts tsa khatello ea maikutlo.Barfuss o phaella ka hore ho na le khetho ea ho sebelisa mokhoa oa ho bōpa o tsoakiloeng - o entsoeng ke mofani oa ketone matrix Victrex (Cleveleys, Lancashire, UK) le morekisi oa likarolo Tri-Mack (Bristol, RI, US) - e sebelisang theipi e tlaase ea mocheso oa PAEK bakeng sa litlaleho. le PEEK bakeng sa ho tlatsana, ho nolofaletsa ntho e kopaneng, e le 'ngoe ho pholletsa le sehokelo (sheba "Overmolding e holisa mefuta ea PEEK ka metsoako").O phaella ka ho re: "Ho ikamahanya le maemo ho boetse ho thusa ho koala libopeho tsa geometrical," o phaella ka ho re, "e hlahisang mehaho e kopanetsoeng e khonang ho mamella meroalo e phahameng le ho feta."
Ts'ebetso ea herone e qala ka litheipi tsa thermoplastic tse kentsoeng ka botlalo tse kentsoeng ka har'a carbon fiber tse lohiloeng ka li-organoTubes le ho kopanngoa.Garthaus o re: "Re qalile ho sebetsa le li-organoTubes lilemong tse 10 tse fetileng, re etsa liphaephe tse kopaneng tsa hydraulic bakeng sa sefofane."O hlalosa hore kaha ha ho liphaephe tse peli tsa hydraulic tsa lifofane tse nang le geometry e tšoanang, ho tla hlokahala hlobo bakeng sa se seng le se seng, ho sebelisoa theknoloji e teng."Re ne re hloka phala e ka sebelisoang ka morao ho fihlela geometry ea pipe e ikemetseng.Kahoo, mohopolo e ne e le ho etsa liprofaele tse kopaneng tse tsoelang pele ebe CNC e li kopanye ho lijeometri tse lakatsehang. ”
Setšoantšo sa 2 Litheipi tsa prepreg tse lohiloeng li fana ka li-preform tsa sebopeho sa net tse bitsoang organoTubes bakeng sa mokhoa oa ho etsa ente ea herone le ho nolofalletsa tlhahiso ea libopeho tse fapaneng.
Sena se utloahala se tšoana le seo Sigma Precision Components (Hinckley, UK) e se etsang (sheba "Ho lokisa li-aeroengines ka liphaephe tse kopantsoeng") ka moaparo oa eona oa carbon fiber / PEEK."Ba shebile likarolo tse tšoanang empa ba sebelisa mokhoa o fapaneng oa ho kopanya," Garthaus oa hlalosa."Ka mokhoa oa rona, re bona monyetla oa ho eketsa ts'ebetso, joalo ka porosity e ka tlase ho 2% bakeng sa meaho ea sefofane."
Garthaus' Ph.D.mosebetsi oa thesis ho ILK o ile oa hlahlojoa ho sebelisoa pultrusion e tsoelang pele ea thermoplastic composite (TPC) ho hlahisa li-tubes tse lohiloeng, tse entseng hore ho be le ts'ebetso e tsoelang pele ea patented bakeng sa li-tubes le profiles tsa TPC.Leha ho le joalo, hajoale, herone e khethile ho sebetsa le barekisi ba lifofane le bareki ba sebelisa mokhoa o sa khaotseng oa ho bopa."Sena se re fa bolokolohi ba ho etsa libopeho tse fapaneng, ho kenyeletsoa li-profiles tse kobehileng le tse nang le likarolo tse fapaneng, hammoho le ho sebelisa li-patches tsa lehae le li-drop-offs," oa hlalosa."Re sebeletsa ho iketsetsa ts'ebetso ea ho kopanya lipache tsa lehae ebe re li kopanya le boemo bo kopaneng.Ha e le hantle, ntho e 'ngoe le e' ngoe eo u ka e etsang ka li-laminate tse bataletseng le likhetla, re ka li etsetsa li-tubes le profiles. "
Ho etsa lifaele tsena tse se nang letho tsa TPC e ne e hlile e le e 'ngoe ea liqholotso tse thata ka ho fetisisa, ho bolela Garthaus.“U ke ke ua sebelisa ho etsa litempe kapa ho bopa ka senya ka silicone;kahoo, re ile ra tlameha ho theha mokhoa o mocha. "Empa ts'ebetso ena e thusa ho sebetsa hantle haholo le likarolo tse thehiloeng ho shaft, o re.E boetse e nolofalitse ho sebelisa sebopeho sa lebasetere se entsoeng ke Victrex, moo mocheso o tlase oa ho qhibiliha oa PAEK o koahetsoeng ka PEEK, o kopanya organosheet le molding ea ente ka mohato o le mong.
Ntho e 'ngoe e hlokomelehang ea ho sebelisa li-preform tsa organoTube braided tape ke hore li hlahisa litšila tse nyane haholo."Ka braiding, re na le litšila tse ka tlase ho 2%, 'me hobane ke tepi ea TPC, re ka sebelisa litšila tsena tse nyenyane ho khutlela ho overmolding ho fumana tekanyo ea tšebeliso ea thepa ho fihlela ho 100%," Garthaus o hatisa.
Barfuss le Garthaus ba ile ba qala mosebetsi oa bona oa tsoelo-pele e le bafuputsi ba Institute of Lightweight Engineering le Polymer Technology (ILK) ho TU Dresden.Barfuss oa hlokomela:Eena le Garthaus ba sebelitse moo ka lilemo tse ka bang 10 lintlafatsong tse 'maloa, ho kenyelletsa le TPC pultrusion e tsoelang pele le mefuta e fapaneng ea ho kopanya.Mosebetsi oo qetellong o ile oa tšeloa ho seo hona joale e leng theknoloji ea ts'ebetso ea herone TPC.
"Ka mor'a moo re ile ra kenya kopo lenaneong la Jeremane EXIST, le reretsoeng ho fetisetsa theknoloji e joalo ho indasteri le ho tšehetsa merero ea 40-60 selemo le selemo libakeng tse ngata tsa lipatlisiso," ho bolela Barfuss."Re fumane chelete bakeng sa lisebelisoa tsa lichelete, basebetsi ba bane le matsete bakeng sa mohato o latelang oa ho eketsa."Ba thehile mohale ka Mots'eanong 2018 kamora ho bonts'a ho JEC World.
Ka JEC World 2019, herone e ne e hlahisitse likarolo tse ngata tsa lipontšo, ho kenyeletsoa mochini o bobebe, oa torque e phahameng, o kopantsoeng oa li-gear, kapa gearshaft."Re sebelisa carbon fiber / PAEK tape organoTube e khabisitsoeng ka li-angles tse hlokoang ke karolo ebe re e kopanya hore e be tube," Barfuss oa hlalosa.Ka mor'a moo, re futhumatsa tube ka 200 ° C ebe re e koahela ka lisebelisoa tse entsoeng ka ho kenya PEEK e matlafalitsoeng ka carbon fiber ka 380 ° C."The overmolding e entsoe ho sebelisoa Moldflow Insight ho tloha Autodesk (San Rafael, Calif., US).Nako ea ho tlatsa hlobo e ile ea ntlafatsoa hore e be metsotsoana e 40.5 'me ea finyelloa ho sebelisoa mochini oa ho etsa ente oa Arburg (Lossburg, Jeremane) ALLROUNDER.
Ho fetella hona ha ho fokotse litšenyehelo tsa kopano feela, mehato ea tlhahiso le thepa, empa hape ho ntlafatsa ts'ebetso.Phapang ea 40 ° C pakeng tsa mocheso o qhibilihisang oa PAEK shaft le oa gear ea PEEK e overmolded e etsa hore ho be le kopano e kopanetsoeng ea ho qhibiliha pakeng tsa tse peli boemong ba molek'hule.Mofuta oa bobeli oa mochine oa ho kopanya, ho koala sebopeho, ho finyelloa ka ho sebelisa khatello ea ente ho thermoform ka nako e le 'ngoe nakong ea overmolding ho etsa contour ea ho notlela foromo.Sena se ka bonoa setšoantšong sa 1 ka tlase e le "injection-forming".E etsa selika-likoe se sekoti kapa sa sinusoidal moo giar e kopantsoeng teng khahlano le karolo e pota-potileng e boreleli, e hlahisang sebopeho sa ho notlela ka sebopeho sa geometri.Sena se tsoela pele ho matlafatsa matla a gearshaft e kopantsoeng, joalokaha ho bontšitsoe tekong (sheba kerafo e ka tlaase ka ho le letona).1. E thehiloe ka tšebelisano-'moho le Victrex le ILK, herone e sebelisa khatello ea ente nakong ea overmolding ho etsa contour ea ho notlela foromo ka har'a gearshaft e kopantsoeng (holimo) . Ts'ebetso ena ea ho etsa ente e lumella mochine o kopantsoeng ka mokhoa oa ho koala (mokha o motala holim'a graph) ho ts'ehetsa torque e phahameng khahlano le giar-driveshaft e kentsoeng ka mokhoa o fetelletseng ntle le ho notlela sebopeho (mokokotlo o motšo holim'a kerafo).
Garthaus o re: "Batho ba bangata ba fihlella tlamahano e kopaneng ea ho qhibiliha nakong ea ho qhibiliha ho feta tekano," ho bolela Garthaus, "'me ba bang ba sebelisa ho notlela ka li-composite, empa senotlolo ke ho li kopanya hore e be ts'ebetso e le 'ngoe e ikemetseng."O hlalosa hore bakeng sa liphetho tsa liteko setšoantšong sa 1, bobeli ba shaft le selika-likoe se feletseng sa gear li ne li koaletsoe ka thoko, ebe li potoloha ho etsa hore ho be le ho kuta.Ho hloleha ha pele ho kerafo ho tšoauoa ka selikalikoe ho bontša hore ke bakeng sa gear e fetotsoeng ea PEEK ntle le ho notlela foromo.Ho hloleha ha bobeli ho tšoauoa ka selikalikoe se crimped se ts'oanang le naleli, se bonts'ang tlhahlobo ea gear e fetisitsoeng ka mokhoa oa ho notlela."Tabeng ena, o na le kopanelo e kopaneng le e notletsoeng," ho bolela Garthaus, "'me u fumana keketseho ea 44% ea torque."O re phephetso hona joale ke ho fumana mokhoa oa ho notlela liforomo hore o nke mojaro esale pele ho eketsa torque e tla sebetsa pele ho hloleha.
Ntlha ea bohlokoa mabapi le ho notlela foromo ea contour eo herone e e fihlelang ka ho etsoa ha ente ke hore e lokiselitsoe ka botlalo ho ea ka karolo e le 'ngoe le ho kenya karolo eo e tlamehang ho mamella.Ka mohlala, ho gearshaft, ho notlela foromo ho pota-potile, empa ka har'a li-struts-compression struts ka tlase, ke axial."Ke ka lebaka lena seo re se hlahisitseng e le mokhoa o pharaletseng haholoanyane," ho bolela Garthaus."Kamoo re kopanyang mesebetsi le likarolo ho itšetlehile ka kopo ea motho ka mong, empa ha re ntse re ka etsa sena haholoanyane, re ka boloka boima le litšenyehelo tse eketsehileng."
Hape, ketone e matlafalitsoeng ka fiber e khuts'oane e sebelisoang linthong tse sebetsang ka bongata joalo ka likere e fana ka libaka tse ntle tsa ho roala.Victrex e pakile sena mme ha e le hantle, e rekisa 'nete ena bakeng sa thepa ea eona ea PEEK le PAEK.
Barfuss o bontša hore gearshaft e kopantsoeng, e ileng ea amoheloa ka Khau ea 2019 ea JEC World Innovation sehlopheng sa lifofane, ke "pontšo ea mokhoa oa rona, eseng feela ts'ebetso e tsepamisitseng kopo e le 'ngoe.Re ne re batla ho hlahloba hore na re ka fokotsa tlhahiso e kae le ho sebelisa thepa ea TPC ho hlahisa meaho e sebetsang hantle, e kopaneng. ”Khamphani hajoale e ntse e ntlafatsa lithupa tsa khatello ea maikutlo, tse sebelisoang lits'ebetsong tse kang li-struts.
Setšoantšo sa 3 Tension-compression strutsInjection-forming e atolosoa ho struts, moo herone overmolds tšepe mojaro phetiso element ka karolo sebopeho ho sebelisa axial form-locking ho eketsa ho ikopanya matla.
Ntho e sebetsang bakeng sa tension-compression struts ke karolo ea tšepe ea tšepe e fetisetsang meroalo ho tloha le ho tloha fereko ea tšepe ho ea ho tube e kopantsoeng (sheba setšoantšo se ka tlase).Ho etsa ente ho sebelisoa ho kopanya karolo ea kenyelletso ea tšepe ea tšepe 'meleng oa composite strut.
O re: "Molemo o ka sehloohong oo re fanang ka oona ke ho fokotsa palo ea likarolo.""Sena se nolofatsa mokhathala, e leng phephetso e kholo bakeng sa lisebelisoa tsa lifofane.Ho koala liforomo ho se ho ntse ho sebelisoa li-composites tsa thermoset tse nang le polasetiki kapa tšepe e kenngoa, empa ha ho na maqhama a kopanetsoeng, kahoo o ka fumana motsamao o fokolang pakeng tsa likarolo.Leha ho le joalo, mokhoa oa rona o fana ka sebopeho se kopaneng se se nang motsamao o joalo. ”
Garthaus o qotsa mamello ea tšenyo e le phephetso e 'ngoe bakeng sa likarolo tsena.Oa hlalosa: "U tlameha ho ama li-struts ebe u etsa liteko tsa mokhathala."Hobane re sebelisa lisebelisoa tsa matrix tsa thermoplastic tse sebetsang hantle haholo, re ka khona ho mamella ts'enyehelo e phahameng ea 40% khahlano le li-thermosets, 'me li-microcracks tse tsoang tšusumetsong li hola hanyane ka mokhathala."
Leha struts ea pontšo e bonts'a ho kenngoe ka tšepe, herone hajoale e ntse e etsa tharollo ea thermoplastic, e nolofalletsang maqhama a kopaneng lipakeng tsa 'mele oa strut o kopaneng le karolo ea kenyelletso ea mojaro."Ha re khona, re khetha ho lula re le likarolo tsohle le ho fetola thepa ka ho fetola mofuta oa fiber reinforcement, ho akarelletsa le carbon, khalase, fiber e tsoelang pele le e khutšoanyane," ho bolela Garthaus."Ka tsela ena, re fokotsa ho rarahana le litaba tsa sehokelo.Mohlala, re na le mathata a fokolang haholo ha re bapisoa le ho kopanya thermosets le thermoplastics.Ho phaella moo, tlamahano pakeng tsa PAEK le PEEK e 'nile ea lekoa ke Tri-Mack ka liphello tse bontšang hore e na le 85% ea matla a laminate ea motheo ea unidirectional CF / PAEK 'me e matla ka makhetlo a mabeli ho feta li-adhesive bonds tse sebelisang sekhomaretsi sa filimi ea epoxy ea indasteri.
Barfuss o re heroone hona joale o na le basebetsi ba robong mme o tloha ho mofani oa thepa ea ntlafatso ea theknoloji ho ea ho mofani oa likarolo tsa sefofane.Mohato oa eona o moholo o latelang ke nts'etsopele ea fektheri e ncha Dresden.O re: "Bofelong ba 2020 re tla be re e-na le setsi sa liteko se hlahisang likarolo tsa pele."Re se re ntse re sebetsa le li-OEM tsa lifofane le barekisi ba bohlokoa ba Tier 1, re bonts'a meralo ea mefuta e mengata e fapaneng ea lits'ebetso."
Khampani e boetse e sebetsa le barekisi ba eVTOL le basebetsi ba fapaneng ba US Ha herone e ntse e holisa lisebelisoa tsa sefofane, e boetse e fumana boiphihlelo ba ho etsa thepa ka lisebelisoa tsa lipapali ho kenyelletsa bo-'mankhane le likarolo tsa libaesekele."Theknoloji ea rona e ka hlahisa likarolo tse ngata tse rarahaneng tse nang le ts'ebetso, nako ea potoloho le melemo ea litšenyehelo," ho bolela Garthaus."Nako ea potoloho ea rona re sebelisa PEEK ke metsotso e 20, khahlano le metsotso e 240 re sebelisa prepreg ea autoclave.Re bona menyetla e mengata, empa hajoale, sepheo sa rona ke ho kenya likopo tsa rona tsa pele tlhahiso le ho bonts'a boleng ba likarolo tse joalo 'marakeng. ”
Herone e tla boela e hlahise ho Carbon Fiber 2019. Ithute haholoanyane ka ketsahalo ena ho carbonfiberevent.com.
E tsepamisitse maikutlo ho ntlafatseng li-layup tsa matsoho tsa setso, baetsi ba li-nacelle le ba thrust reverser ba beha leihlo ts'ebeliso ea nako e tlang ea othomathike le ho bopa ho koetsoeng.
Sistimi ea libetsa tsa sefofane e fumana ts'ebetso e phahameng ea khabone / epoxy ka bokhoni ba ho bopa ha khatello.
Mekhoa ea ho bala likarolo tsa tšusumetso e nang le tikoloho tikolohong e nolofalletsa papiso e tsamaisoang ke data le lisebelisoa tsa setso sebakeng sa maemo.
Nako ea poso: Aug-19-2019