Indlela Yokukhetha Ama-Deep Groove Ball Bearings Ezimoto Zikagesi Ezisheshayo

Umnotho Wokusebenza Kwama-Deep Groove Ball Bearings

Ukuthunyelwa kweamabheringi ebhola elijulilekuma-motor kagesi anesivinini esikhulu—njengalawo asetshenziswa ezinhlelweni zokudonsa izimoto zikagesi (EV), ama-actuator ezindiza, kanye nama-spindle ezimboni asebenza ngesivinini esikhulu—kudinga indlela eqinile yokuklama imishini kanye nomnotho womjikelezo wokuphila. Njengoba ama-motor kagesi anamuhla edlula imingcele yokusebenza, evame ukwedlula ama-RPM angu-20,000, ama-bearings aba yisici esiyinhloko sokuvimbela ukuthembeka kwesistimu. Inqubo yokukhetha kumele idlule ngale kwezilinganiso zomthwalo eziyisisekelo ukuze ihlanganise amandla ayinkimbinkimbi e-thermo-mechanical, lapho ukungqubuzana ngokweqile noma ukushabalaliswa kokushisa okunganele kuholela ngokushesha ekwehlulekeni okubi kakhulu.

Ngokombono wezomnotho, ukucacisa ama-bearings alezi zimo ezimbi kakhulu kuhilela ukubhekana nokungezwani phakathi kwezindleko zezingxenye zangaphambili kanye nobuqotho bokusebenza kwesikhathi eside. Onjiniyela kumele bahlole ukuthi ukucushwa kwensimbi ejwayelekile ye-bearing 52100 kungasinda yini emjikelezweni womsebenzi noma uma uhlelo lokusebenza luqinisekisa iprimiyamu yezinto ezithuthukisiwe kanye nokukhiqizwa okunembile. Imodeli yezindleko eziphelele zobunini (TCO) kumele ibheke intengo yokuthenga ye-bearings, izindleko zokugcoba okukhethekile, kanye nomthelela wezezimali wokwehluleka kwemoto okungaba khona ngaphambi kwesikhathi.

Izici Zokusebenza Ezisheshayo

Ukusebenza kwesivinini esiphezulu kuma-deep groove ball bearings kulinganiswa ngokuyinhloko yi-speed factor ($nd_m$), ebalwa ngokuphindaphinda isivinini sokujikeleza ku-RPM ($n$) ngobubanzi be-pitch circle ye-bearing ngamamilimitha ($d_m$). Ama-motor kagesi athuthukile asebenza kakhulu ebangeni lika-$nd_m$ elingu-1.0 × 10^6 kuya ku-1.5 × 10^6 mm/min. Kulezi zivinini, amandla e-centrifugal asetshenziswa yizinto ezigoqayo ngokumelene nomgwaqo wangaphandle anda kakhulu, ashintsha ama-engeli okuxhumana futhi akhiqize ukungqubuzana okukhulu kwangaphakathi.

Ngaphezu kwalokho, isivinini esikhulu sokujikeleza sibangela ukwanda kwendandatho yangaphakathi yebhereyi. Uma ukuphazamiseka kokulingana phakathi kweshafu yemoto nendandatho yangaphakathi kuphazamisekile, kungenzeka ukuguguleka okuncane noma ukuncipha kwe-fretting. Onjiniyela kumele babale ukuphazamiseka komgodi okudingekayo ukuze balondoloze ukulingana okuphephile ku-RPM ephezulu ngaphandle kokudala ukucindezeleka okukhulu kwe-hoop lapho bephumule, okungaqeda isikhala sangaphakathi sebhereyiyi ngaphambi kwesikhathi futhi kubangele ukubaleka kokushisa.

Ukushintshana Phakathi Kwesivinini, Umthwalo, kanye Nezindleko

Ukuthuthukisa i-bearing yokusebenza ngesivinini esikhulu kuvame ukulimaza amandla ayo okuthwala umthwalo. Ama-bearing ebhola ajulile asheshayo avame ukusebenzisa izinto ezincane ezigoqayo ukunciphisa isisindo se-centrifugal kanye nokungqubuzana okuphansi, okunciphisa ngokwemvelo isilinganiso somthwalo oguquguqukayo ($C$). Ngenxa yalokho, onjiniyela babhekene nokushintshana okuqondile: ukukhetha i-bearing eqinile ngokwanele ukusingatha imithwalo ye-radial kanye ne-axial kusuka ku-motor rotor, kodwa ilula ngokwanele ukuvimbela ukukhiqizwa kokushisa okweqile ku-RPM ephezulu.

Lokhu kuhwebelana kwezobuchwepheshe kuthinta ngqo ezomnotho wephrojekthi. Ukuthuthukiswa kusuka ekilasini elijwayelekile le-ABEC 3 (ISO P6) lokucacisa kuya ekilasini le-ABEC 7 (ISO P4) ukuze kuncishiswe ukudlidliza kwesivinini esikhulu kungandisa izindleko ngeyunithi ngayinye ngo-40% kuya ku-60%. Ngokufanayo, ukucacisa amakheji e-polymer akhethekile noma ama-polyurea grease asheshayo kwengeza izindleko ezengeziwe. Amaqembu okuthenga nobunjiniyela kumele anqume ngokubambisana umkhawulo wokusebenza lapho izindleko ezingaphansi kokunemba okuphezulu zinciphisa khona ukubuyiselwa kokusebenza kahle kwemoto kanye nokunciphisa iwaranti.

Imininingwane Ebalulekile Yesivinini Nokuthembeka

Ukucacisa ama-deep groove ball bearings ama-motor kagesi asheshayo kudinga ukunakwa okuhlanganisiwe ku-geometry yangaphakathi, ukubekezelelana, kanye nobukhulu bomngcele. Ukukhetha okujwayelekile okungekho eshalofini akuvamile ukwanele ezindaweni ezishintshashintshayo lapho ama-gradient okushisa kanye nokusheshisa okusheshayo kuyinto evamile. Yonke imininingwane, kusukela kusayizi webhore kuya ku-thickener yokwenziwa ku-grease, kumele yakhiwe ukuze kuncishiswe izindlela ezithile zokwehluleka ezihlobene nokujikeleza kwejubane eliphezulu.

Inqubo yokucacisa iphindaphindwa. Ukukhetha kokuqala okusekelwe kubukhulu bomngcele kumele kuhlaziywe njalo njengoba imodeli yokushisa kanye nokuhlaziywa kwe-rotor dynamic kwembula izimo zangempela zokusebenza. Le ndlela eqinile iqinisekisa ukuthi ibhereyi izogcina ukujiya kwefilimu ye-elastohydrodynamic lubrication (EHL) ngaphansi kwazo zonke izindlela zokusebenza.

Uchungechunge Lokuthwala, Usayizi Webhore, kanye Nezilinganiso Zomthwalo

Ukukhetha kuqala ngochungechunge lwamabhere kanye nosayizi webhore, okuqondisa ubukhulu bomngcele kanye nendawo yangaphakathi etholakalayo yezinto ezigingqikayo. Ama-motor anesivinini esikhulu avame ukusebenzisa uchungechunge lwamabhere wesigaba esincane, njengochungechunge lwe-6800 kanye ne-6900, noma uchungechunge lwe-6000 olukhanyayo. Uma kuqhathaniswa nochungechunge oluphakathi noma olusindayo,amabheringi esigaba esincaneinezibhola ezincane, okunciphisa kakhulu amandla e-centrifugal kanye nokushelela ngesivinini esiphezulu, yize kungalimaza umthamo womthwalo ophelele.

Isilinganiso somthwalo oguqukayo ($C$) kanye nesilinganiso somthwalo omile ($C_0$) kumele kubhekwe ndawonye nesisindo se-rotor yemoto kanye nanoma yimiphi imithwalo yangaphandle ye-radial noma ye-axial (njengaleyo evela kumagiya noma amabhande). Kuzinhlelo zokusebenza zesivinini esikhulu, umthwalo oguqukayo oguqukayo ($P$) akufanele udlule u-5% kuya ku-8% wesilinganiso somthwalo oguqukayo ($C$). Ukusebenza ngaphansi kwalesi silinganiso kuqinisekisa ukuthi impilo yokukhathala ikhuliswa kakhulu, yize onjiniyela kumele futhi baqinisekise ukuthi kufakwa umthwalo omncane ukuvimbela amabhola ukuthi angasheleli kunokuba agingqike, into ebhubhisa ngokushesha ubuso bomgwaqo womjaho.

Ukususwa Kwangaphakathi, Isigaba Sokucacisa, kanye Nokusebenza Okusheshayo

Ukususwa kwangaphakathi kungenye yezindlela ezibaluleke kakhulu zokuphathwa kokushisa kuma-bearings ebhola ajulile asheshayo. Njengoba injini isebenza, indandatho yangaphakathi kanye nezinto ezigoqayo zivame ukufudumala kunendandatho yangaphandle, okubangela ukwanda kokushisa okuhlukile okunciphisa ukususwa kwangaphakathi. Ukuvimbela i-bearing ukuthi isebenze nge-negative clearance (preload), okubangela ukuqhuma okusheshayo kokushisa, ukususwa kwangaphakathi kwe-radial C3 noma C4 kuyindinganiso yama-motor kagesi asheshayo. Isibonelo, i-bearing 6205 ene-C3 clearance inikeza ama-micrometer angu-13 kuya kwangu-28 okudlala kwe-radial ekushiseni kwegumbi, okuhambisana nokuguquguquka okuvamile kokushisa okusebenza.

Ikilasi lokucacisa linquma ukunemba kobukhulu nokusebenza kwebhereyi. Ama-motor kagesi ashesha kakhulu adinga ukulawulwa okuqinile phezu kokugijima kwe-radial kanye ne-axial ukuze kuncishiswe ukudlidliza nomsindo we-acoustic. Ukucacisa ikilasi lokubekezelela le-ABEC 5 (ISO P5) noma i-ABEC 7 (ISO P4) kukhawulela ukugijima kwe-radial kube ngaphansi kwama-micrometer angu-4 kuya kwangu-5 ngobukhulu obujwayelekile be-shaft yemoto. Lokhuukunemba okuphezulukuqinisekisa ukuthi i-rotor ihlala ilinganiswe ngokuguquguqukayo, kunciphisa ukucindezeleka okujikelezayo kubhereyi futhi kuvimbele amaza okugqama okubhubhisayo ekusakazekeni kwendlu yemoto.

Umklamo Wekheji, Izimbozo, kanye Nokugcoba

Ukwakheka kwekheji, ukuvala, kanye nokugcotshwa kwakha umongo we-tribological webheri. Amakheji ensimbi anezicucu ezimbili ajwayelekile avame ukwehluleka ukukhathala ngaphansi kwamandla aphezulu e-centrifugal. Esikhundleni salokho, ama-ball bearings asheshayo asebenzisa amakheji alula, aphansi okungqubuzana enziwe nge-glass-fiber reinforced polyamide (PA66) noma i-polyether ether ketone (PEEK). Amakheji e-PEEK afaneleka kakhulu ezindaweni ezibucayi, agcina ukuzinza kwesakhiwo emazingeni okushisa aqhubekayo afinyelela ku-150°C kuya ku-200°C.

Izixazululo zokuvala kumele zilinganisele ukuvikelwa kokungcola nokunciphisa ukungqubuzana. Izivikelo zokuthintana (RS/RS1) zikhiqiza ukushisa okweqile ngesivinini esiphezulu futhi ngokuvamile ziyagwenywa. Izivikelo ze-labyrinth ezingathintani (RZ/2RZ) noma izihlangu zensimbi (ZZ) ziyathandwa, njengoba zigcina amafutha ngaphandle kokwengeza ukudonsa okujikelezayo. Ukugcoba kuncike kumafutha okwenziwa aphansi, ngokuvamile kusetshenziswa amafutha e-ester noma e-hydrocarbon base ane-polyurea thickeners. I-base oil viscosity engu-20 kuya ku-30 ​​cSt ku-40°C ivamile, iqinisekisa ukujiya okwanele kwefilimu ngaphandle kokulahlekelwa okukhulu kwe-churning.

Ithebula elingezansi libonisa ukuhwebelana okuvamile phakathi kokuhlelwa kwekheji elihlukile kanye nokufakwa kwesivalo ezindaweni ezinesivinini esikhulu:

Ukuqhathanisa Nezinketho Zokubethela Ezihlukile

Nakuba ama-deep groove ball bearing akhiqizwe ngensimbi yokuvikela ukungqubuzana engu-52100 iyindinganiso yemboni yama-motor kagesi, amapharamitha okusebenza ngokweqile avame ukudinga ukuhlola ubuchwepheshe obuhlukile bokuthwala. Njengoba i-topology yezimoto zikagesi ishintsha—ikakhulukazi ngokwamukelwa kwezakhiwo ze-high-voltage kanye nama-inverter e-silicon carbide (SiC)—izidingo ezibekwa kuma-bearing zidlula ukujikeleza okuyisisekelo kwemishini, zingena ezindaweni zokufakelwa kukagesi kanye nesayensi yezinto ezithuthukisiwe.

Onjiniyela kumele baqhathanise ngobuqotho ama-bearings e-steel deep groove ball bearings ajwayelekile nezinye izindlela ezifana nama-bearings e-hybrid ceramic deep groove ball bearings kanye nama-angular contact ball bearings (ama-ACBB). Lokhu kuhlaziywa okuqhathanisayo kumele kulinganise ukuphakama kobuchwepheshe uma kuqhathaniswa nokusebenza kwezentengiselwano, kuqinisekiswe ukuthi ukwakheka kwama-bearings akhethiwe kuhambisana kahle ne-torque-speed curve ethize yemoto, izidingo zomthwalo we-axial, kanye nezindleko zomjikelezo wokuphila wethagethi.

Izindlela Zokuqhathanisa Zokukhetha Amabhere

Izindlela eziyinhloko zokuqhathanisa izakhiwo zokuthwala zihlanganisa imikhawulo yesivinini esiphezulu, umthamo wokuthwala umthwalo (womabili ama-radial kanye nama-axial), ukuqina kwesistimu, kanye nokuthambekela ekulimaleni kukagesi. Ama-bearings ebhola ajulile ajwayelekile aphumelela kakhulu ekusingatheni imithwalo ye-radial emaphakathi kanye nemithwalo emincane ye-axial kuzo zombili izinhlangothi, okwenza kube nokuguquguquka okukhulu. Kodwa-ke, uma imoto kagesi inegiya eliyi-helical elikhiqiza i-axial thrust enkulu eqondene ne-unidirectional, imiklamo ye-deep groove ejwayelekile ingase ihlupheke ngokulayishwa komphetho emigwaqweni yomjaho.

Ezinhlelweni ezinemithwalo ephezulu ye-axial, ama-angular contact ball bearings avame ukuhlolwa njengendlela ehlukile. Ama-ACBB afaka izindlela zomjaho ezingalingani ezisekela imithwalo ebalulekile yokusunduza, kodwa kumele afakwe ngamabili (isb., ngemuva komunye noma ubuso nobuso) futhi adinga ukulayisha kwangaphambili kwe-axial okunembile. Lokhu kunezela ubunzima enqubweni yokuhlanganisa imoto futhi kwandisa umkhawulo we-axial iyonke, okungaba yingozi ekwakhiweni kwezimoto ezinamandla lapho isikhala siphezulu khona.

Izinzuzo Zokuthwala I-Ceramic Ehlanganisiwe

Ngezinhlelo zokusebenza ezisheshayo kakhulu nezidinga ugesi, ama-hybrid ceramic deep groove ball bearings anikeza izinzuzo ezinkulu zobuchwepheshe kunezinhlobo zensimbi ezijwayelekile. Ama-hybrid bearings asebenzisa izindandatho zensimbi ezijwayelekile zangaphakathi nezangaphandle kodwa ashintsha izakhi zensimbi ezigoqayo ngamabhola e-ceramic e-silicon nitride ($Si_3N_4$). I-Silicon nitride inobuningi obungu-3.2 g/cm³, obucishe bube ngu-40% wesisindo sensimbi ethwalayo. Lokhu kunciphisa okukhulu kwesisindo ngokulinganisela kunciphisa amandla e-centrifugal kanye nezikhathi ze-gyroscopic ngesivinini esiphezulu, okuvumela ama-hybrid bearings ukuthi asebenze kahle ngamanani e-$nd_m$ adlula u-1.2 × 10^6.

Ngaphezu kwalokho, i-silicon nitride iyisivikelo sikagesi esingokwemvelo, esinamandla e-dielectric angaphezu kuka-15 kV/mm. Ama-motor kagesi esimanje aqhutshwa ama-inverter e-high-frequency pulse-width modulated (PWM) asengozini enkulu yama-voltage e-parasitic common-mode. Uma le voltage iphuma nge-bearing, ibangela i-electric discharge machining (EDM), okuholela ekuqhekekeni okuncane, ukuqhumisa emigwaqweni yomjaho, kanye nokuwohloka okusheshayo kwamafutha.Amabheringi e-ceramic e-hybridvimba ngokuphelele le migudu yokukhipha ebhubhisayo, kuqedwe isidingo samasongo okumisa ayinkimbinkimbi noma ama-grease abizayo okuhambisa ugesi.

Ukufaneleka kanye nokulinganiselwa kohlelo lokusebenza

Naphezu kobungcweti bawo, ama-hybrid ceramic bearings kanye namalungiselelo e-ACBB ayinkimbinkimbi anemikhawulo ehlukile yokusetshenziswa, ikakhulukazi eqhutshwa yizindleko kanye nokuzwela kokuphatha. Ama-hybrid ceramic deep groove ball bearings ngokuvamile abiza iprimiyamu yentengo engu-300% kuya ku-500% kunezinye zezinsimbi ezisebenza ngensimbi yonke. Lesi siphindaphindi sezindleko sikhawulela ukusetshenziswa kwawo ezinhlelweni zokusebenza ezinenani eliphezulu, njengezimoto zokudonsa ze-EV ze-premium, imishini ye-turbo esheshayo, kanye nama-spindles amathuluzi omshini oqondile, lapho izindleko zokwehluleka zidlula kakhulu iprimiyamu yengxenye.

Ngaphezu kwalokho, amabhola e-ceramic ane-modulus ephezulu kakhulu yokunwebeka kunensimbi, okwenza aqine kakhulu. Nakuba lokhu kwandisa ukuqina kwamabhereyi, kunciphisa nendawo ye-contact ellipse ngaphansi komthwalo, okudala ukucindezeleka okuphezulu kokuthintana emigwaqweni yensimbi. Ngenxa yalokho, amabhereyi e-hybrid asengozini enkulu yokuqothulwa kwe-brine uma ehlushwa imithwalo yokushaqeka ngesikhathi sokuhlanganiswa kwezimoto noma ukuhamba.

Ithebula elilandelayo lifingqa izibalo zokuqhathanisa kuzo zonke izinketho ezintathu eziyinhloko zokuthwala ama-motor anesivinini esikhulu:

Ukuqinisekiswa Ngaphambi Kokukhiqizwa

Izibalo zobunjiniyela bethiyori kanye nezincazelo zekhathalogi zisebenza kuphela njengesisekelo sokukhethwa kwamabhere. Ngaphambi kokuba ibhere elijulile le-groove lingavunyelwa ukukhiqizwa ngobuningi kumoto kagesi enesivinini esikhulu, kumele liqinisekiswe ngokuqinile. Lesi sigaba sokuhlola sivala igebe phakathi kwefiziksi elilingisiwe kanye nokwehluka kokusebenza komhlaba wangempela, ukuqinisekisa ukuthi ibhere lingasinda emjikelezweni wangempela womsebenzi wesicelo sokugcina.

Uhlaka lokuqinisekisa oluhlelekile lunciphisa ukwehluleka kwensimu okubi kakhulu kanye nokubuyiswa kwemikhiqizo okubizayo. Lolu hlaka kumele luhlanganise ukuhlolwa kwesikhathi sokuphila, ukuhlolwa kokucindezeleka kwemvelo, kanye nokulandeleka okuqinile kwezinto. Ngokufaka izinto ezidingekayoamabheringi esiboneloEzimweni ezilingisa noma ezidlula ukusebenza okuvamile, onjiniyela bangabona imiklamo engaphansi, balungise ukwakheka kokugcoba, futhi basungule izilinganiso zekhwalithi eziyisisekelo zamaqoqo okukhiqiza esikhathi esizayo.

Inqubo Yokukhetha Ngokusekelwe Emjikelezweni Womsebenzi

Inqubo yokuqinisekisa iqala ngokuhlobanisa impilo yokukhathala yebhereyitha engu-$L_{10h}$ enomqondo nomjikelezo womsebenzi olindelwe wemoto. Kusetshenziswa amazinga e-ISO 281, ukubalwa okungu-$L_{10h}$ kunikeza inani lamahora angu-90% wabantu ababhereyithayo abazosinda ngaphansi komthwalo nesivinini esithile. Kumamotha anesivinini esikhulu ezimbonini asebenza njalo, impilo eqondiwe yamahora angu-20,000 kuya kwangu-30,000 iyinto ejwayelekile. Ngokuphambene nalokho, amamotha okudonsa e-EV asebenza ngaphansi kwemithwalo nesivinini esiguquguqukayo kakhulu, ngokuvamile ahlose impilo engu-$L_{10h}$ yamahora angu-8,000 kuya kwangu-10,000 ngokusekelwe esilinganisweni esilinganiselwe somjikelezo wokushayela wemoto.

Ama-rig okuqinisekisa kumele aphinde lo mjikelezo womsebenzi, abeke i-bearing kumaphrofayili okusheshisa okusheshayo, imithwalo ye-radial eguquguqukayo, kanye nezimo zokushisa ezishintshashintshayo. Ukuhlolwa kokuphila okusheshisiwe (i-ALT) kuvame ukusetshenziswa, lapho i-bearing isebenza ngesivinini esiphezulu noma imithwalo ukuze kubangele ukukhathala ngokushesha kunokusebenza kwesikhathi sangempela. Idatha ekhishwe kulezi zivivinyo ivumela onjiniyela ukuthi bahlaziye izibalo zomthwalo olinganayo onamandla futhi baqinisekise ukuthi i-internal clearance ekhethiwe (isb., i-C3) ivumela ngokwanele ukwanda kokushisa okubonwa ngesikhathi sezidingo ze-torque eziphakeme.

Ukuhlolwa Kokudlidliza, Umsindo, kanye Nokushisa

Ama-motor kagesi anejubane eliphezulu adinga amaphrofayili aphansi kakhulu omsindo, ukudlidliza, kanye nobukhali (NVH). Ukuqinisekiswa kokuqina kudinga ukuhlaziywa kokudlidliza okuphelele kusetshenziswa amamitha e-Anderon noma ama-rig okuhlola i-accelerometer akhethekile. Ijubane lokudlidliza le-bearing lilinganiswa kuma-frequency band amathathu: Okuphansi (50-300 Hz), Okuphakathi (300-1800 Hz), kanye Nokuphezulu (1800-10000 Hz). Ukudlidliza okweqile ebhendini enejubane eliphezulu kuvame ukukhombisa amaphutha amancane kakhulu, ukusatshalaliswa kwamafutha okunganele, noma izinkinga ze-geometric runout ezizolimaza kakhulu ukuzinza kwejubane eliphezulu.

Ngesikhathi esifanayo, ukuhlolwa kokuzinza kwezinga lokushisa kubalulekile. Ama-thermocouple asetshenziswa ukuqapha izinga lokushisa lendandatho yangaphandle yebhereyi ngesikhathi sokugijima ngesivinini esikhulu isikhathi eside. Ibhereyi yebhola ejulile echazwe kahle kufanele ifinyelele izinga lokushisa lokusebenza elizinzile elingaphansi kwemingcele yokushisa yezingxenye zayo ngokuphephile. Isibonelo, uma ibhereyi isebenzisa ikheji ejwayelekile ye-PA66 kanye negrisi yokwenziwa ejwayelekile, ukuhlolwa kokuqinisekisa kumele kuqinisekise ukuthi izinga lokushisa lokusebenza eliqhubekayo alidluli ku-110°C kuya ku-120°C, ukuqinisekisa ukuthi i-grease thickener ayiboli futhi ayikhiphi uwoyela wayo oyisisekelo ngaphambi kwesikhathi.

Izindinganiso, Izinto Zokusebenza, kanye Nokulandelela

Ukuqinisekiswa kwedlula ukuhlolwa ngokomzimba ukuze kufakwe ukuqinisekiswa kwezindinganiso zokukhiqiza, ubumsulwa bezinto ezibonakalayo, kanye nokulandelela kwe-batch. Ukusebenza ngesivinini esikhulu kuzwela kakhulu ekufakweni okungeyona insimbi ngaphakathi kwensimbi ethwalayo, okusebenza njengezinto ezigxilisa ukucindezeleka futhi kuqalise ukuchitheka kokukhathala okungaphansi komhlaba. Ukuqinisekiswa kudinga izitifiketi ze-metallurgical eziqinisekisa ukunamathela ezindinganisweni ze-ISO 683-17 noma ze-ASTM A295 zezinsimbi ezithwalayo ze-100Cr6 noma ze-SUJ2, okuqinisekisa ikakhulukazi ukuthi okuqukethwe komoya-mpilo kuhlala kungaphansi kwezingxenye eziyi-10 kuya kweziyi-15 ngesigidi (ppm) ukuqinisekisa ukumelana nokukhathala okuphezulu.

Izinqubo zokulandelela kumele zisungulwe ngesikhathi sesigaba sokuqinisekisa ukuqinisekisa ukuthi ikhwalithi yamayunithi okukhiqiza iyafana nama-prototypes. Lokhu kufaka phakathi ukulandelela indawo ethile yokushisa yensimbi, ibhetshi yokukhiqiza yekheji le-polymer, kanye nosuku oluqondile lokwakheka kwe-lubricant. Idatha yokulawula inqubo yezibalo eqinile (i-SPC) kufanele ibuyekezwe ukuqinisekisa ubukhulu obubalulekile, njengobubanzi be-bore kanye ne-radial internal clearance, ukugcina ukuphambuka okujwayelekile okungaphansi kwama-micrometer amabili phakathi kokugijima kokukhiqiza, okuqinisekisa ukusebenza kwesivinini esiphezulu okuqhubekayo kuyo yonke injini ehlanganisiwe.

Ukuthola Imithombo Nokukhethwa Kokugcina

Umphumela wokuguqulwa kwenqubo yokukhetha amabhereli ugxile kusuka kubunjiniyela bemishini kuya ekuphathweni kokuthengwa kwamasu kanye nokuphathwa kweketanga lokuhlinzeka. Ukuhlonza ibhereli yebhola ejulile enemininingwane yobuchwepheshe ephelele akusizi ngalutho uma ingxenye ingenakutholakala ngokwethembeka ngezinga, ngaphakathi kwesabelomali, nangesikhathi esibekiwe. Isigaba sokugcina sokukhetha sidinga ukuvumelanisa idatha yokuqinisekiswa kobunjiniyela namaqiniso ezentengiselwano kanye namakhono abaphakeli.

Ukuzulazula emakethe yomhlaba wonke yezimpahla kudinga indlela eyinkimbinkimbi yokuhlola abaphakeli. Amaqembu okuthenga kumele ahlukanise phakathi kwabakhiqizi abakwaziyo ukukhiqiza njalo izinhlobo ezinembile nezisheshayo kanye nalezo ezigxile kuma-bearings ezimpahla ezinomthamo omkhulu. Isinqumo sokugcina sokuthola impahla sisekelwe ku-matrix eyinkimbinkimbi yokuqinisekiswa kwekhwalithi, ukuqina kwempahla, kanye nomnotho womjikelezo wokuphila.

Izici Zokufaneleka Kwabahlinzeki

Iziqu zomhlinzeki ze-amabheringi enjini kagesi ashesha kakhuluifuna ukuhlolwa kwekhwalithi okuqinile kwesistimu. Ngezicelo zezimoto neze-EV, abahlinzeki kumele babe nesitifiketi se-IATF 16949 esisebenzayo, esibonisa amakhono okuvimbela amaphutha aqinile kanye nokunciphisa ukuhlukahluka. Izicelo zezimboni ngokuvamile zidinga ukuhambisana ne-ISO 9001 njengesisekelo. Ngaphezu kwalokho, izindawo zokukhiqiza zomhlinzeki kumele zihlolwe amakhono azo okugaya nokulolonga, njengoba ukufeza ukubekezelelana kwe-ABEC 5 noma i-ABEC 7 okudingekayo ekusebenzeni ngesivinini esikhulu kudinga imishini yokugaya ye-CNC yesimanje kanye nokulawulwa okuqinile kwemvelo.

Ukuhlanzeka ngesikhathi sokuhlanganiswa kwamabhereyi kungenye into ebalulekile efanelekile. Ukungcola kwezinhlayiya ezincane okwethulwa ngesikhathi sokuhlanganiswa kuzosebenza njengenhlanganisela ekhuhlayo ku-20,000 RPM, kubhubhise ngokushesha imigwaqo yomjaho futhi konakalise amafutha. Abahlinzeki abafanelekile kumele benze imisebenzi yokugcina yokuwasha, yokufaka amafutha, kanye nokuvala ngaphakathi kwamagumbi okuhlanza aqinisekisiwe, ngokuvamile ahlangabezana ne-ISO Class 7 (Class 10,000) noma amazinga angcono, ukuqinisekisa ukuthi indawo yangaphakathi yebhereyi ihlala ihlanzekile ngaphambi kokufakwa.

Izindleko, Isikhathi Sokuhola, kanye Nokutholakala

Izingxoxo zezentengiselwano kumele zilinganise izindleko zeyunithi nge-Minimum Order Quantities (MOQs) kanye nezikhathi zokuhola. Ama-high-speed deep groove ball bearing avame ukudinga i-custom radial internal clearances, ama-PEEK cages akhethekile, noma ama-niche polyurea greases. Lokhu kulungiswa okungejwayelekile kuvimbela abahlinzeki ekugcwaliseni ama-oda avela esitokweni esikhona. Ngenxa yalokho, ama-MOQ ama-custom high-speed bearing angasukela kumayunithi ayi-1,000 kuya ku-10,000 ngebhetshi ngayinye, okudinga ukuhlelwa ngokucophelela kwempahla kanye nokwabiwa kwemali ngumkhiqizi wemoto.

Izikhathi zokuhola zama-bearings akhethekile nazo zingadala izingozi ezinkulu zochungechunge lokuphakelwa. Ngenkathi ama-bearings ajwayelekile ensimbi engase atholakale zingakapheli amasonto ama-4 kuya kwayi-6, ukucushwa okwenziwe ngokwezifiso okudinga amathuluzi akhethekile ekhejini noma izinto ezigingqikayo ze-ceramic ezingenisiwe kungandisa izikhathi zokuhola zibe amasonto ayi-16 kuya kwangama-24. Amaqembu okuthenga kumele ahlanganise lezi zikhathi ezinde kumashejuli okwethulwa komkhiqizo futhi asungule izivumelwano zesitoko sokuphepha noma izinhlelo zempahla ephethwe ngabathengisi (i-VMI) ukuvikela ekumisweni kwemigqa yokukhiqiza.

Uhlaka Lwesinqumo Sokugcina

Uhlaka lwesinqumo sokugcina kufanele lusebenzise i-weighted scoring matrix ehlanganisa ukusebenza kobuchwepheshe, ukusebenza kahle kwezentengiselwano, kanye nengozi yomhlinzeki. Amaphuzu obuchwepheshe atholakala esigabeni sokuhlola sokuqinisekisa, izici zokulinganisa ezifana nokuzinza kokushisa, ukusebenza kwe-NVH, kanye nokuphila okubikezelwe okungu-$L_{10h}$. Amaphuzu okuhweba ahlola izindleko zamayunithi, ukutshalwa kwezimali kwamathuluzi, kanye nokuguquguquka kwe-MOQ. Izici zobungozi zihlola indawo yomhlinzeki yezepolitiki, ukuzinza kwezezimali, kanye nokusebenza kokulethwa ngesikhathi komlando.

Ekugcineni, ukukhethwa kwama-deep groove ball bearings kwama-motor kagesi asheshayo akufanele kuphathwe njengo

Izinto Ezibalulekile Okufanele Uzicabangele

• Sebenzisa i-ndm speed factor ukuze uhlole ukufaneleka kwebheri, ikakhulukazi uma ama-motor kagesi esebenza cishe ku-1.0 × 10^6 kuya ku-1.5 × 10^6 mm/min.
• Hlola ukuziphatha kokushisa, amandla e-centrifugal, ukususwa kwangaphakathi, kanye nezimo zokulingana esikhundleni sokuthembela kuphela ezilinganisweni zomthwalo omile noma oguquguqukayo.
• Linganisa isivinini kanye nomthamo womthwalo ngokucophelela ngoba izinto ezincane ezigoqekayo zinciphisa ukungqubuzana kodwa futhi zinganciphisa isilinganiso somthwalo oguquguqukayo wamabhere.
• Cacisa ukulingana kokuphazamiseka kweshafti ukuze kuvinjelwe ukushelela okuncane ku-RPM ephezulu ngaphandle kokususa ukuvuleka kwangaphakathi noma ukubangela ukusabalala kokushisa.
• Phatha ukukhethwa kwamabhere njengezindleko eziphelele zesinqumo sobunikazi ezihlanganisa intengo yengxenye, ukuthambisa, isigaba sokunemba, ingozi yesikhathi sokungasebenzi, kanye nokuvezwa kwewaranti.
• Vumelanisa amakilasi okunemba okuphezulu njenge-ABEC 7 noma i-ISO P4 kuphela uma izinzuzo ezilindelwe ekulawuleni ukudlidliza, ukusebenza kahle, kanye nokuthembeka zidlula ukwenyuka kwezindleko okungu-40% kuya ku-60%.

imibuzo ejwayelekile ukubuzwa

Kungani kusetshenziswa ama-deep groove ball bearing kuma-motor kagesi asheshayo?

Zisekela imithwalo ye-radial kanye nemithwalo ye-axial ephakathi nendawo enomfutho ophansi, i-geometry ehlanganisiwe, kanye nekhono lesivinini esikhulu, okwenza zifaneleke kuma-motor e-EV traction, ama-spindle, ama-actuator, kanye nezinye izinhlelo zokusebenza ze-motor enembile.

Kusho ukuthini ukuthi i-bearing speed factor ndm?

I-speed factor ndm ilingana nesivinini sokujikeleza ku-RPM esiphindaphindwe ngobubanzi besiyingi se-bearing pitch ngamamilimitha. Ama-motor kagesi anesivinini esikhulu angasebenza cishe ku-1.0 × 10^6 kuya ku-1.5 × 10^6 mm/min, okudinga ukwakheka ngokucophelela.

Kufanele ngikhethe nini ama-bearings anembe kakhulu enjini?

Khetha ukunemba okuphezulu, njenge-ABEC 7 noma i-ISO P4, lapho ukudlidliza, ukushisa, umsindo, noma ukuzinza kwesivinini kubalulekile. Izindleko ezengeziwe zingathethelelwa uma kuthuthukisa ukusebenza kahle, ukuthembeka, kanye nokusebenza kwewaranti.

Isivinini esikhulu sithinta kanjani umthamo womthwalo wokuthwala?

Imiklamo yokuthwala isivinini esikhulu ivame ukusebenzisa izinto ezincane ezigoqekayo ukunciphisa amandla e-centrifugal kanye nokungqubuzana. Lokhu kunganciphisa isilinganiso somthwalo oguqukayo, ngakho onjiniyela kumele balinganisele amandla esivinini ngokumelene nezidingo zomthwalo we-radial kanye ne-axial.

Kungani ukulingana komgodi kubalulekile uma i-RPM ephezulu iphezulu?

Uma i-RPM ephezulu, indandatho yangaphakathi inganwebeka ngenxa yemiphumela ye-centrifugal. Uma ukulingana kokuphazamiseka kunganele, kungenzeka ukushelela okuncane noma ukufiphaza; uma kuqinile kakhulu, ukususwa kwangaphakathi kungalahleka, okwandisa ingozi yokushisa kanye nokwehluleka.