Indlela yokukhetha ii-Deep Groove Ball Bearings zeeMoto zoMbane eziKhawulezayo

Uqoqosho Lokusebenza KweeBearings Zebhola Ezinzulu ZeGroove

Ukusasazwa kweiibheringi zebhola ezinzulu zomjelokwiimoto zombane ezihamba ngesantya esiphezulu—ezifana nezo zisetyenziswa kwiinkqubo zokudonsa izithuthi zombane (EV), ii-actuators zeenqwelo moya, kunye nee-spindles zoshishino ezihamba rhoqo—zifuna indlela engqongqo yoyilo loomatshini kunye noqoqosho lomjikelo wobomi. Njengoko iimoto zombane zanamhlanje zityhala imida yokusebenza, edla ngokudlula i-20,000 RPM, iibheringi ziba yinto ephambili yokuthintela ukuthembeka kwenkqubo. Inkqubo yokukhetha kufuneka idlule ngaphaya kovavanyo lomthwalo olusisiseko ukuze ibandakanye amandla anzima e-thermo-mechanical, apho ukungqubana okugqithisileyo okanye ukusasazwa kobushushu okunganelanga ngokukhawuleza kukhokelela ekusileleni okukhulu.

Ngokwembono yezoqoqosho, ukucacisa iibheringi zezi meko zinzima kubandakanya ukukhawulelana noxinzelelo phakathi kweendleko zecandelo elingaphambili kunye nokuthembeka kokusebenza kwexesha elide. Iinjineli kufuneka zihlole ukuba ulwakhiwo lwentsimbi ye-bearing steel ye-52100 eqhelekileyo inokusinda na kumjikelo womsebenzi okanye ukuba usetyenziso luyithethelela iprimiyamu yezixhobo eziphambili kunye nokuveliswa ngokuchanekileyo. Imodeli ye-holistic total cost of ownership (TCO) kufuneka iqwalasele ixabiso lokuthenga lebheringi, iindleko zokuthambisa okukhethekileyo, kunye nempembelelo yezemali yokusilela kwemoto kwangaphambili.

Izinto Ezibangela Ukusebenza Ngesantya Esiphezulu

Ukusebenza ngesantya esiphezulu kwiibheringi zebhola ezinzulu zegroove kulinganiswa kakhulu yi-speed factor ($nd_m$), ebalwa ngokuphindaphinda isantya sokujikeleza kwi-RPM ($n$) nge-pitch circle diameter yebheri kwiimilimitha ($d_m$). Iimoto zombane eziphambili zisebenza ngakumbi kuluhlu lwe-$nd_m$ oluyi-1.0 × 10^6 ukuya kwi-1.5 × 10^6 mm/min. Kwezi santya, amandla e-centrifugal asetyenziswa zizinto eziqengqelekayo nxamnye nendlela yangaphandle yokukhwela ihashe ayanda ngokukhawuleza, etshintsha ii-engile zoqhagamshelwano kwaye avelise ukungqubana okukhulu kwangaphakathi.

Ukongeza, isantya esiphezulu sokujikeleza sibangela ukwanda kwe-centrifugal kweringi yangaphakathi yebheyiri. Ukuba ukuphazamiseka kokulingana phakathi kwe-motor shaft kunye neringi yangaphakathi kuphazamisekile, ukutyibilika okuncinci okanye ukuguguleka kunokwenzeka. Iinjineli kufuneka zibale ukuphazamiseka kwe-shaft okufunekayo ukuze zigcine ukulingana okukhuselekileyo kwi-RPM ephezulu ngaphandle kokufaka uxinzelelo olukhulu lwe-hoop ekuphumleni, okunokuphelisa kwangethuba ukungcola kwangaphakathi kwebheyiri kwaye kubangele ukubaleka kobushushu.

Utshintshiselwano phakathi kwesantya, umthwalo, kunye neendleko

Ukulungisa i-bearing yokusebenza ngesantya esiphezulu kudla ngokuphazamisa amandla ayo okuthwala umthwalo. Ii-bearing zebhola ezinzulu ezikhawulezayo zihlala zisebenzisa izinto ezincinci zokuqengqeleka ukunciphisa ubunzima be-centrifugal kunye nokungqubana okuphantsi, nto leyo enciphisa ngokwendalo umlinganiselo womthwalo oguqukayo ($C$). Ngenxa yoko, iinjineli zijongene notshintsho oluthe ngqo: ukukhetha i-bearing eqinileyo ngokwaneleyo ukusingatha imithwalo ye-radial kunye ne-axial kwi-motor rotor, kodwa ilula ngokwaneleyo ukuthintela ukuveliswa kobushushu obugqithisileyo kwi-RPM ephezulu.

Olu rhwebo lobuchwephesha luchaphazela ngokuthe ngqo uqoqosho lweprojekthi. Ukuphucula ukusuka kwiklasi eqhelekileyo ye-ABEC 3 (ISO P6) yokuchaneka ukuya kwiklasi ye-ABEC 7 (ISO P4) ukunciphisa ukungcangcazela ngesantya esiphezulu kunokunyusa ixabiso leyunithi nganye ngama-40% ukuya kuma-60%. Ngokufanayo, ukucacisa iikheyiji zepolymer ezikhethekileyo okanye iigrisi ze-polyurea ezikhawulezayo kongeza iindleko ezongezelelweyo. Amaqela okuthenga kunye nobunjineli kufuneka amisele ngokubambisana umda ochanekileyo wokusebenza apho iindleko ezingaphantsi zokuchaneka okuphezulu zivelisa imbuyekezo ekusebenzeni kakuhle kwemoto kunye nokunciphisa iwaranti.

Iinkcukacha eziphambili zesantya kunye nokuthembeka

Ukucacisa iibheringi zebhola ezinzulu ze-groove kwiimoto zombane ezikhawulezayo kufuna ingqalelo ebanzi kwi-geometry yangaphakathi, ukunyamezelana, kunye nobukhulu bomda. Ukukhetha okuqhelekileyo okungekho eshelufini akwanelanga kwiindawo eziguquguqukayo apho i-thermal gradients kunye nokukhawuleziswa okukhawulezayo zizinto eziqhelekileyo. Zonke iinkcukacha, ukusuka kubungakanani bebhore ukuya kwi-synthetic thickener kwi-grease, kufuneka zenziwe ngendlela yokunciphisa iindlela ezithile zokusilela ezinxulumene nokujikeleza kwesantya esiphezulu.

Inkqubo yokuchazwa iphindaphindwa. Ukhetho lokuqala olusekelwe kubukhulu bomda kufuneka luhlaziywe rhoqo njengoko imodeli yobushushu kunye nohlalutyo lwe-rotor dynamic lubonisa iimeko zokusebenza zokwenyani. Le ndlela ingqongqo iqinisekisa ukuba i-bearing iya kugcina ubukhulu befilimu ye-elastohydrodynamic lubrication (EHL) phantsi kwazo zonke iimeko zokusebenza.

Uthotho lweeBearing, Ubungakanani beBore, kunye noVavanyo loMthwalo

Ukhetho luqala ngothotho lweebheringi kunye nobukhulu bebhore, ezichaza ubungakanani bomda kunye nendawo yangaphakathi ekhoyo yezinto eziqengqelekayo. Iimoto ezikhawulezayo zihlala zisebenzisa uthotho lweebheringi zecandelo elincinci, njengothotho lwe-6800 kunye ne-6900, okanye uthotho lwe-6000 olukhanyayo. Xa kuthelekiswa nothotho oluphakathi okanye olunzima,iibheringi zecandelo elincincizineebhola ezincinci, ezinciphisa kakhulu amandla e-centrifugal kunye nokutyibilika ngesantya esiphezulu, nangona oko kungayi kunciphisa amandla omthwalo iyonke.

Umlinganiselo womthwalo oguqukayo ($C$) kunye nomlinganiselo womthwalo ongashukumiyo ($C_0$) kufuneka zijongiswe ngobunzima berotor yemoto kunye nayo nayiphi na imithwalo yangaphandle yeradial okanye ye-axial (efana naleyo evela kwigiya okanye iibhanti). Kwizicelo zesantya esiphezulu, umthwalo oguqukayo oguqukayo ($P$) akufuneki udlule kwi-5% ukuya kwi-8% yomlinganiselo womthwalo oguqukayo ($C$). Ukusebenza ngaphantsi kwalo mda kuqinisekisa ukuba ubomi bokudinwa buyandiswa, nangona iinjineli kufuneka ziqinisekise ukuba kufakwa umthwalo omncinci ukuthintela iibhola ekutyibilikeni endaweni yokuqengqeleka, into eyonakalisa ngokukhawuleza umphezulu wendlela yokugijima.

Ukucoca Kwangaphakathi, Udidi Oluchanekileyo, kunye Nokubaleka

Ukususwa kwangaphakathi mhlawumbi yeyona nkcazelo ibalulekileyo yolawulo lobushushu kwiibheringi zebhola ezinzulu ezinesantya esiphezulu. Njengoko imoto isebenza, iringi yangaphakathi kunye nezinto eziqengqelekayo zihlala zishushu kuneringi yangaphandle, nto leyo ebangela ukwanda kobushushu obuhlukeneyo okunciphisa ukususwa kwangaphakathi. Ukuthintela ukuba ibheringi isebenze nge-negative clearance (preload), ebangela ukuba i-thermal runaway ikhawuleze, ii-radial internal clearances ze-C3 okanye ze-C4 zisemgangathweni kwiimoto zombane ezinesantya esiphezulu. Umzekelo, i-bearing ye-6205 ene-C3 clearance inika i-13 ukuya kwi-28 micrometers ye-radial play kubushushu begumbi, ivumela ii-gradients eziqhelekileyo zobushushu obusebenzayo.

Udidi oluchanekileyo lulawula ubukhulu kunye nokusebenza kwebheri. Iimoto zombane ezikhawulezayo zifuna ulawulo oluqinileyo phezu kwe-radial kunye ne-axial runout ukunciphisa ukungcangcazela kunye nengxolo ye-acoustic. Ukucacisa iklasi yokunyamezela ye-ABEC 5 (ISO P5) okanye i-ABEC 7 (ISO P4) kunciphisa i-radial runout ukuya ngaphantsi kwe-4 ukuya kwi-5 micrometers ngobukhulu be-shaft yemoto eqhelekileyo. Okuukuchaneka okuphezuluiqinisekisa ukuba i-rotor ihlala ilungelelene ngokuguquguqukayo, inciphisa uxinzelelo olujikelezayo kwi-bearing kwaye ithintela amaza e-resonance atshabalalisayo ukuba angasasazeki kwi-motor housing.

Uyilo lweekheji, iiSeal, kunye nokuthambisa

Uyilo lwekheji, ukutywina, kunye nokuthambisa zenza umongo we-tribological webheri. Iikheji zentsimbi eziziinxalenye ezimbini eziqhelekileyo zinokungaphumeleli kokudinwa phantsi kwamandla aphezulu e-centrifugal. Endaweni yoko, iibheri zebhola ezinzulu ezinesantya esiphezulu zisebenzisa iikheji ezilula, eziphantsi kokuqhawuka ezenziwe nge-polyamide eqinisiweyo yeglasi-fiber (PA66) okanye i-polyether ether ketone (PEEK). Iikheji zePEEK zilungele ngokukodwa iindawo ezishushu kakhulu, zigcina uzinzo lwesakhiwo kumaqondo obushushu asebenzayo aqhubekayo ukuya kuthi ga kwi-150°C ukuya kwi-200°C.

Izisombululo zokutywina kufuneka zilinganisele ukhuseleko longcoliseko kunye nokunciphisa ukungqubana. Izivali zoqhagamshelwano (RS/RS1) zivelisa ubushushu obugqithisileyo ngesantya esiphezulu kwaye zihlala zithintelwa. Iivali ze-labyrinth ezingadibaniyo (RZ/2RZ) okanye izihlangu zesinyithi (ZZ) ziyathandwa, njengoko zigcina i-grease ngaphandle kokongeza ukutsala okujikelezayo. Ukuthambisa kuxhomekeke kwi-grisi zokwenziwa ezi-viscosity ezisezantsi, zihlala zisebenzisa i-ester okanye ii-hydrocarbon base oils ezenziweyo ezine-polyurea thickeners. I-base oil viscosity ye-20 ukuya kwi-30 cSt kwi-40°C iqhelekile, iqinisekisa ubukhulu obaneleyo befilimu ngaphandle kokulahlekelwa kakhulu yi-churning.

Itheyibhile engezantsi ibonisa urhwebo oluqhelekileyo phakathi kolwakhiwo lwekheji ezahlukeneyo kunye nolwesitywina kwiindawo ezinesantya esiphezulu:

Ukuthelekisa neeNketho zokuBearing eziKhethekileyo

Nangona iibheringi zebhola ezinzulu ezenziwe ngentsimbi ye-52100 enekhabhoni ephezulu yokulwa nokuqhawuka kwentsimbi ziyimigangatho yoshishino lweemoto zombane, iiparameter zokusebenza ezigqithisileyo zihlala zifuna ukuvavanywa kobuchwepheshe beebheringi ezizezinye. Njengoko iitopologi zemoto zombane zitshintsha—ingakumbi ngokwamkelwa kwezakhiwo ze-high-voltage kunye nee-silicon carbide (SiC) inverters—iimfuno ezibekwa kwiibheringi zidlula ukujikeleza okusisiseko koomatshini, zingena kwiindawo zokufakelwa kombane kunye nesayensi yezinto eziphucukileyo.

Iinjineli kufuneka zithelekise ngokungenamkhethe iibheringi zebhola ezinde zentsimbi ezisemgangathweni kunye nezinye iindlela ezifana neebheringi zebhola ezinde zeceramic ezixutyiweyo kunye neebheringi zebhola zoqhagamshelwano ze-angular (ii-ACBB). Olu hlalutyo lokuthelekisa kufuneka lulinganise ukongama kobuchwephesha ngokuchasene nokuphila kwezorhwebo, ukuqinisekisa ukuba uyilo lweebheringi ezikhethiweyo luhambelana ngokugqibeleleyo ne-torque-speed curve ethile yemoto, iimfuno zomthwalo we-axial, kunye neendleko zomjikelo wobomi ekujoliswe kuzo.

Iikhrayitheriya zokuthelekisa zoKhetho lweeBhereyitha

Iikhrayitheriya eziphambili zokuthelekisa uyilo lweebhereyitha ziquka imida yesantya esiphezulu, umthamo wokuthwala umthwalo (zombini i-radial kunye ne-axial), ukuqina kwenkqubo, kunye nokuchaphazeleka kumonakalo wombane. Iibhereyitha zebhola ezinzulu eziqhelekileyo zibalasele ekuphatheni imithwalo ephakathi ye-radial kunye nemithwalo emincinci ye-axial kuzo zombini iindlela, nto leyo eyenza ukuba zibe nokuguquguquka okukhulu. Nangona kunjalo, ukuba i-electric motor ine-helical gearing evelisa i-axial thrust enkulu ye-unidirectional, uyilo oluqhelekileyo lwe-deep groove lunokubandezeleka kumthwalo we-edge kwiindlela zomdyarho.

Kwizicelo ezinemithwalo ephezulu ye-axial, ii-angular contact ball bearings zihlala zivavanywa njengenye indlela. Ii-ACBB zineendlela zomdyarho ezingalinganiyo ezixhasa imithwalo ebalulekileyo yokutyhala, kodwa kufuneka zifakwe ngababini (umz., ngasemva-ngasemva okanye ubuso-ngobuso) kwaye zifuna ukulayisha kwangaphambili kwe-axial ngokuchanekileyo. Oku kongeza ubunzima kwinkqubo yokuhlanganisa iimoto kwaye kwandisa unyawo lwe-axial iyonke, nto leyo enokuba yingozi kuyilo lweemoto ezixineneyo apho indawo iphezulu.

Iingenelo zokuthwala iCeramic yeHybrid

Kwizicelo ezikhawulezayo kakhulu nezifuna umbane omninzi, iibheringi zebhola ezinzulu ze-ceramic hybrid ceramic zibonelela ngeenzuzo ezinkulu zobugcisa kuneenguqulelo zentsimbi eqhelekileyo. Iibheringi ze-hybrid zisebenzisa izangqa zentsimbi yangaphakathi neyangaphandle ezisemgangathweni kodwa zitshintsha izinto eziqengqelekayo zentsimbi ngeebhola ze-ceramic ze-silicon nitride ($Si_3N_4$). I-silicon nitride inobunzima obumalunga ne-3.2 g/cm³, obumalunga ne-40% ubunzima bentsimbi ethwalayo. Oku kunciphisa okukhulu kobunzima kunciphisa amandla e-centrifugal kunye namaxesha e-gyroscopic ngesantya esiphezulu, okuvumela iibheringi ze-hybrid ukuba zisebenze ngokukhululekileyo kwixabiso le-$nd_m$ elidlula i-1.2 × 10^6.

Ngaphezu koko, i-silicon nitride sisithinteli sombane esiqhelekileyo, esinamandla okunyibilikisa umbane angaphezu kwe-15 kV/mm. Iimoto zombane zanamhlanje eziqhutywa zii-inverters ze-high-frequency pulse-width modulated (PWM) zichaphazeleka kakhulu zii-voltages ze-parasitic common-mode. Ukuba le voltage iphuma kwi-bearing, ibangela i-electrical discharge machining (EDM), nto leyo ekhokelela kwi-micro-cratering, i-flute kwiindlela zomdyarho, kunye nokuwohloka ngokukhawuleza kwegrisi.Iibheringi zeseramikhi ezixutyiweyoukuvala ngokupheleleyo le mijelo yokukhupha etshabalalisayo, kususa imfuneko yezangqa zokumisa ezintsonkothileyo okanye iigrisi eziqhubayo ezibizayo.

Ukufaneleka kwesicelo kunye nokulinganiselwa

Nangona zingcono kakhulu kwezobuchwepheshe, iibheringi ze-ceramic ezixutyiweyo kunye nolungiselelo oluntsonkothileyo lwe-ACBB zinemida eyahlukileyo yokusetyenziswa, ikakhulu iqhutywa bubuntununtunu beendleko kunye nokuphathwa. Iibheringi zebhola ze-ceramic ezixutyiweyo ezinzulu zihlala zibiza iprimiyamu yexabiso eliphakathi kwama-300% ukuya kuma-500% kunee-alternatives zazo zentsimbi yonke. Olu phindaphindo lweendleko luthintela ukusetyenziswa kwazo kwizicelo ezinexabiso eliphezulu, ezifana nee-EV traction motors eziphambili, ii-turbomachinery ezikhawulezayo, kunye nee-spindles zesixhobo somatshini esichanekileyo, apho ixabiso lokusilela lingaphezulu kakhulu kuneprimiyamu yecandelo.

Ukongeza, iibhola zeseramikhi zinemodulus ephezulu kakhulu yokuthamba kunentsimbi, nto leyo eyenza ziqine kakhulu. Nangona oku kwandisa ukuqina kweebheringi, kunciphisa nendawo ye-contact ellipse phantsi komthwalo, nto leyo edala uxinzelelo oluphezulu loqhagamshelwano kwiindlela zomdyarho wentsimbi. Ngenxa yoko, iibheringi ze-hybrid zisengozini enkulu yokuchithwa yi-brinelling xa zithwaxwa yimithwalo yoxinzelelo ngexesha lokuhlanganiswa kweemoto okanye ukuhamba.

Le theyibhile ilandelayo ishwankathela imilinganiselo yokuthelekisa kuzo zonke iindlela ezintathu eziphambili zokuthwala iimoto ezinesantya esiphezulu:

Ukuqinisekiswa Ngaphambi Kokuveliswa

Ubalo lobunjineli bethiyori kunye neenkcukacha zekhathalogu zisebenza kuphela njengesiseko sokukhetha iibheringi. Ngaphambi kokuba ibheringi yebhola enzulu yomngxuma ivunyelwe ukuvelisa ngobuninzi kwimoto yombane ekhawulezayo, kufuneka ivavanywe ngokungqongqo. Eli nqanaba lovavanyo livala umsantsa phakathi kwefiziksi yokulinganisa kunye nokwahluka kokusebenza kwehlabathi lokwenyani, ukuqinisekisa ukuba ibheringi inokusinda kumjikelo womsebenzi wokwenyani wesicelo sokugqibela.

Isakhelo sokuqinisekisa esicwangcisiweyo sinciphisa ukusilela okukhulu kwentsimi kunye nokukhunjulwa kwemveliso okubizayo. Esi sakhelo kufuneka siquke uvavanyo lobomi, ukuhlolwa koxinzelelo lokusingqongileyo, kunye nokulandeleka okungqongqo kwezinto. Ngokusebenzisa i-subject, kufuneka ifakelwe kwi-subject defects.iibheringi zeprototypeKwiimeko ezilinganisa okanye ezidlula ukusebenza okuqhelekileyo, iinjineli zinokuchonga uyilo oluncinci, zilungise iindlela zokuthambisa, kwaye ziseke imilinganiselo yomgangatho osisiseko kwiibhetshi zemveliso zexesha elizayo.

Inkqubo yoKhetho esekwe kwiMijikelo yoMsebenzi

Inkqubo yokuqinisekisa iqala ngokunxulumanisa ubomi bokudinwa bebheri obuqikelelwayo be-$L_{10h}$ kunye nomjikelo womsebenzi olindelweyo wemoto. Ukusebenzisa imigangatho ye-ISO 281, ubalo lwe-$L_{10h}$ lubonelela ngenani leeyure ezingama-90% zabemi abathwalayo abaya kusinda phantsi komthwalo kunye nesantya esithile. Kwiimoto ezihamba ngesantya esiphezulu zoshishino ezisebenza ngokuqhubekayo, ubomi obujoliswe kubo beeyure ezingama-20,000 ukuya kuma-30,000 buqhelekile. Ngokwahlukileyo koko, iimoto zokudonsa ze-EV zisebenza phantsi kwemithwalo kunye nesantya esiguquguqukayo kakhulu, zihlala zijolise ubomi be-$L_{10h}$ beeyure ezingama-8,000 ukuya kuma-10,000 ngokusekelwe kumndilili olinganisiweyo womjikelo wokuqhuba wesithuthi.

Iirigi zokuqinisekisa kufuneka ziphinde le mjikelo womsebenzi, zibeke ibheriya kwiiprofayili zokukhawulezisa ngokukhawuleza, imithwalo yeradial eguquguqukayo, kunye neemeko zobushushu ezitshintshatshintshayo. Uvavanyo lobomi olukhawulezileyo (ALT) lusetyenziswa rhoqo, apho ibheriya iqhutywa ngesantya esiphezulu okanye imithwalo ukuze ibangele ukudinwa ngokukhawuleza kunokusebenza ngexesha langempela. Idatha ekhutshwe kwezi mvavanyo ivumela iinjineli ukuba ziphucule ukubalwa komthwalo olinganayo oguquguqukayo kwaye ziqinisekise ukuba i-clearance yangaphakathi ekhethiweyo (umz., C3) ilungele ngokwaneleyo ukwanda kobushushu okubonwa ngexesha leemfuno ze-torque ephezulu.

Uvavanyo lokungcangcazela, ingxolo, kunye nobushushu

Iimoto zombane ezihamba ngesantya esiphezulu zifuna iiprofayili zeNgxolo, ukuDidliza, kunye noBulukhuni (NVH) eziphantsi kakhulu. Ukuqinisekiswa kweebheyiri kufuna uhlalutyo olupheleleyo lokudlidliza kusetyenziswa iimitha zeAnderon okanye iirigi zovavanyo ze-accelerometer ezikhethekileyo. Isantya sokudlidliza sebheyiri silinganiswa kwiibhendi ezintathu zefrikhwensi: Ephantsi (50-300 Hz), Ephakathi (300-1800 Hz), kunye nePhezulu (1800-10000 Hz). Ukudlidliza okugqithisileyo kwibhendi yefrikhwensi ephezulu kudla ngokubonisa iziphene ze-microscopic raceway, ukusasazwa kwegrisi okunganelanga, okanye imiba ye-geometric runout eya kuphazamisa kakhulu uzinzo lwefrikhwensi ephezulu.

Kwangaxeshanye, uvavanyo lokuzinzisa ubushushu lubalulekile. Ii-thermocouples zisetyenziselwa ukujonga ubushushu beringi yangaphandle yebheriya ngexesha lokubaleka ngesantya esiphezulu ixesha elide. Ibheriya yebhola enzulu echazwe ngokufanelekileyo kufuneka ifikelele kubushushu bokusebenza obuzinzileyo obungaphantsi kwemida yobushushu yamacandelo ayo. Umzekelo, ukuba ibheriya isebenzisa ikheyiji eqhelekileyo ye-PA66 kunye negrisi yokwenziwa eqhelekileyo, uvavanyo lokuqinisekisa kufuneka luqinisekise ukuba ubushushu bokusebenza obuqhubekayo abudluli kwi-110°C ukuya kwi-120°C, ukuqinisekisa ukuba i-grease thickener ayiboli kwaye ayikhuphi ioyile yayo esisiseko ngaphambi kwexesha.

Imigangatho, Izixhobo, kunye nokulandeleka

Ukuqinisekiswa kudlulela ngaphaya kovavanyo lomzimba ukuze kuquke ukuqinisekiswa kwemigangatho yokuvelisa, ubumsulwa bezinto, kunye nokulandeleka kwebhetshi. Ukusebenza ngesantya esiphezulu kuchaphazeleka kakhulu kwizinto ezingezizo ezesinyithi ngaphakathi kwentsimbi yokuthwala, ezisebenza njengezinto ezixinanisa uxinzelelo kwaye ziqalise ukudinwa okungaphantsi komhlaba. Ukuqinisekiswa kufuna iziqinisekiso ze-metallurgical eziqinisekisa ukunamathela kwimigangatho ye-ISO 683-17 okanye ye-ASTM A295 kwi-100Cr6 okanye i-SUJ2 bearing steels, ngokukodwa ukuqinisekisa ukuba umxholo we-oksijini uhlala ungaphantsi kwe-10 ukuya kwi-15 parts per million (ppm) ukuqinisekisa ukumelana nokudinwa okuphezulu.

Iiprotokholi zokulandelela kufuneka zimiselwe ngexesha lesigaba sokuqinisekisa ukuqinisekisa ukuba umgangatho weeyunithi zemveliso uhambelana neeprototypes. Oku kuquka ukulandelela indawo ethile yobushushu yentsimbi, ibhetshi yokuvelisa yekheyiji yepolymer, kunye nomhla ochanekileyo wokwenziwa kwe-lubricant. Idatha yokulawula inkqubo yezibalo eziqinileyo (i-SPC) kufuneka ihlolwe ukuqinisekisa ubungakanani obubalulekileyo, obufana nobubanzi bebhore kunye nokususwa kwangaphakathi kwe-radial, ukugcina ukuphambuka okuqhelekileyo okungaphantsi kwe-2 micrometers kuyo yonke imisebenzi yemveliso, ukuqinisekisa ukusebenza okukhawulezayo okuqhubekayo kwimoto nganye edibeneyo.

Ukukhangela kunye noKhetho lokugqibela

Isiphelo senguqu yenkqubo yokukhetha iibheringi sigxile kubunjineli boomatshini ukuya kulawulo lokuthengwa kwezixhobo kunye nolawulo lwekhonkco lokubonelela. Ukuchonga ibheringi yebhola enzulu eneenkcazo zobugcisa ezigqibeleleyo akuncedi nganto ukuba icandelo alinakufumaneka ngokuthembekileyo kwisikali, ngaphakathi kohlahlo-lwabiwo mali, nangexesha elicwangcisiweyo. Isigaba sokugqibela sokukhetha sifuna ukulungelelanisa idatha yokuqinisekiswa kobunjineli kunye neenyani zorhwebo kunye nezakhono zabathengisi.

Ukuhambahamba kwimarike yeebhereyitha zehlabathi kufuna indlela enobuchule yokuvavanya ababoneleli. Amaqela okuthenga kufuneka ahlule phakathi kwabavelisi abakwaziyo ukuvelisa rhoqo iinguqu ezichanekileyo nezikhawulezayo kunye nezo zigxile kwiibhereyitha zeempahla ezinomthamo omkhulu. Isigqibo sokugqibela sokufumana sixhomekeke kumgaqo ontsonkothileyo wokuqinisekisa umgangatho, ukuqina kwempahla, kunye noqoqosho olupheleleyo lomjikelo wobomi.

Izinto eziBalulekileyo kuMboneleli

Isiqinisekiso somboneleli we-iibheringi zemoto zombane ezikhawulezayoiyalela uphicotho olungqongqo lwenkqubo yomgangatho. Kwizicelo zeemoto kunye ne-EV, ababoneleli kufuneka babe nesatifikethi esisebenzayo se-IATF 16949, esibonisa amandla okuthintela iziphene kunye nokunciphisa umahluko. Izicelo zoshishino zihlala zifuna ukuthotyelwa kwe-ISO 9001 njengesiseko. Ngaphezu koko, izixhobo zomvelisi kufuneka zihlolwe amandla azo okugaya kunye nokulola, njengoko ukufikelela kwi-ABEC 5 okanye i-ABEC 7 tolerances efunekayo ekusebenzeni ngesantya esiphezulu kufuna izixhobo zokugaya ze-CNC zanamhlanje kunye nolawulo oluqinileyo lokusingqongileyo.

Ucoceko ngexesha lokuhlanganiswa kweebheringi yenye into ebalulekileyo. Ungcoliseko lwee-microscopic particulate olungeniswa ngexesha lokuhlanganiswa luya kusebenza njengekhompawundi erhabaxa kwi-20,000 RPM, lutshabalalise ngokukhawuleza iindlela zomdyarho kwaye lonakalise igrisi. Ababoneleli abafanelekileyo kufuneka benze imisebenzi yokugqibela yokuhlamba, ukufaka igrisi, kunye nokuvala kwiindawo zokucoca eziqinisekisiweyo, ezihlala zihlangabezana ne-ISO Class 7 (Class 10,000) okanye imigangatho engcono, ukuqinisekisa ukuba imeko yangaphakathi yebheringi ihlala icocekile ngaphambi kokufakwa.

Ixabiso, Ixesha Lokukhokela, kunye Nokufumaneka Kwayo

Iingxoxo zorhwebo mazilinganise iindleko zeyunithi kunye noBuninzi be-Order (MOQs) kunye namaxesha okukhokela. Iibheringi zebhola ezinzulu ezikhawulezayo zihlala zifuna ii-radial internal clearances ezenziwe ngokwezifiso, iikheyiji ezikhethekileyo zePEEK, okanye iigrisi ze-niche polyurea. Ezi zicwangciso zingezizo ezisemgangathweni zithintela ababoneleli ekuzaliseni ii-odolo ezivela kwisitokhwe esikhoyo. Ngenxa yoko, ii-MOQ zeebheringi zesantya esiphezulu ezenziwe ngokwezifiso zinokuqala kwiiyunithi ezili-1,000 ukuya kwi-10,000 ngebhetshi nganye, zifuna ucwangciso olucokisekileyo lwempahla kunye nokwabiwa kwemali ngumvelisi wemoto.

Amaxesha okukhokela kwiibheringi ezikhethekileyo nawo anokubangela umngcipheko omkhulu wekhonkco lokubonelela. Nangona iibheringi zentsimbi eziqhelekileyo zinokufumaneka kwiiveki ezi-4 ukuya kwezi-6, uqwalaselo olwenziwe ngokwezifiso olufuna izixhobo ezikhethekileyo zekheji okanye izinto eziqengqelekayo zeceramic ezingenisiweyo lunokwandisa amaxesha okukhokela ukuya kwiiveki ezili-16 ukuya kwezingama-24. Amaqela okuthenga kufuneka aqwalasele la maxesha andisiweyo kwiishedyuli zokuqaliswa kwemveliso kwaye amisele izivumelwano zesitokhwe sokhuseleko okanye iinkqubo ze-inventory ezilawulwa ngumthengisi (VMI) ukukhusela ekumisweni kwemigca yemveliso.

Isakhelo seSigqibo sokugqibela

Isakhelo sokugqibela sesigqibo kufuneka sisebenzise i-weighted scoring matrix ehlanganisa ukusebenza kobugcisa, ukuphila korhwebo, kunye nomngcipheko womthengisi. Amanqaku obuchwephesha afunyanwa kwisigaba sovavanyo lokuqinisekisa, izinto zokulinganisa ezifana nokuzinza kobushushu, ukusebenza kwe-NVH, kunye nobomi obuqikelelweyo be-$L_{10h}$. Amanqaku orhwebo avavanya iindleko zeyunithi, utyalo-mali lwezixhobo, kunye nokuguquguquka kwe-MOQ. Izinto zomngcipheko zivavanya indawo yomthengisi yezopolitiko, uzinzo lwezemali, kunye nokusebenza kwembali yokuhanjiswa ngexesha.

Ekugqibeleni, ukukhethwa kweebheringi zebhola ezinzulu zeemoto zombane ezikhawulezayo akufuneki kuthathwe njenge

Izinto ezibalulekileyo ekufuneka ziqwalaselwe

• Sebenzisa i-ndm speed factor ukuze ukhusele i-bearing efanelekileyo, ingakumbi xa iimoto zombane zisebenza kufutshane ne-1.0 × 10^6 ukuya kwi-1.5 × 10^6 mm/min.
• Vavanya indlela esebenza ngayo i-thermal, amandla e-centrifugal, ukususwa kwangaphakathi, kunye neemeko zokulingana endaweni yokuxhomekeka kuphela kumanqanaba omthwalo ozinzileyo okanye oguqukayo.
• Linganisa isantya kunye nomthamo womthwalo ngononophelo kuba izinto ezincinci eziqengqelekayo ziyanciphisa ukungqubana kodwa zinokunciphisa nomlinganiselo womthwalo oguqukayo weebheringi.
• Cacisa ukulingana kokuphazamiseka kweshaft ukuthintela ukutyibilika kancinci kwi-RPM ephezulu ngaphandle kokususa ukususwa kwangaphakathi okanye ukubangela ukubaleka kobushushu.
• Phatha ukhetho lweebheringi njengexabiso lilonke lesigqibo sobunini oluquka ixabiso lecandelo, ukuthambisa, udidi lokuchaneka, umngcipheko wexesha lokungasebenzi, kunye nokuvezwa kwewaranti.
• Xelela iiklasi zokuchaneka kweprimiyamu ezifana ne-ABEC 7 okanye i-ISO P4 kuphela xa inzuzo elindelekileyo kulawulo lokungcangcazela, ukusebenza kakuhle, kunye nokuthembeka idlula ukunyuka kweendleko ezingama-40% ukuya kuma-60%.

Imibuzo ebuzwa qho

Kutheni kusetyenziswa ii-deep groove ball bearing kwiimoto zombane ezihamba ngesantya esiphezulu?

Zixhasa imithwalo ye-radial kunye nemithwalo ye-axial ephakathi ene-friction ephantsi, i-compact geometry, kunye nokukwazi ukuhamba ngesantya esiphezulu, nto leyo ezenza zifaneleke kwiimoto ze-EV traction, ii-spindles, ii-actuators, kunye nezinye izicelo zeemoto ezichanekileyo.

Ithetha ukuthini i-bearing speed factor ndm?

Isantya se-ndm silingana nesantya sokujikeleza kwi-RPM siphindaphindwe ngobubanzi besangqa sebhearing pitch kwiimilimitha. Iimoto zombane ezikhawulezayo zinokusebenza malunga ne-1.0 × 10^6 ukuya kwi-1.5 × 10^6 mm/min, nto leyo efuna uyilo olucokisekileyo.

Ndingazikhetha nini iibheringi ezichanekileyo kakhulu kwimoto?

Khetha ukuchaneka okuphezulu, okufana ne-ABEC 7 okanye i-ISO P4, xa ukungcangcazela, ubushushu, ingxolo, okanye ukuzinza kwesantya kubalulekile. Ixabiso elongezelelweyo linokuqinisekiswa ukuba liphucula ukusebenza kakuhle, ukuthembeka, kunye nokusebenza kwewaranti.

Isantya esiphezulu siwuchaphazela njani umthamo womthwalo weebheringi?

Uyilo lweebheringi ezikhawulezayo ludla ngokusebenzisa izinto ezincinci zokuqengqeleka ukunciphisa amandla e-centrifugal kunye nokungqubana. Oku kunokunciphisa umlinganiselo womthwalo oguqukayo, ngoko ke iinjineli kufuneka zilinganise amandla esantya ngokuchasene neemfuno zomthwalo we-radial kunye ne-axial.

Kutheni ukulingana kweshaft kubalulekile xa i-RPM ephezulu?

Xa i-RPM iphezulu, iringi yangaphakathi inokwandiswa ngenxa yeziphumo ze-centrifugal. Ukuba ukulingana kokuphazamiseka akwanelanga, ukutyibilika okanye ukurhawuzelela kunokwenzeka; ukuba kuqinile kakhulu, ukususwa kwangaphakathi kunokulahleka, nto leyo eyandisa umngcipheko wobushushu kunye nokungaphumeleli.