Ukukhethwa Kokuthwala Amabhola Okuxhumana Angular Kwezinhlelo Zokusebenza Ezisheshayo

Isingeniso

Ukukhetha i-angular contact ball bearing yesevisi yesivinini esikhulu akubalulekile kangako ekufaniseni ubukhulu kodwa kumayelana nokulawula ukushisa, ukuqina, ukulayisha kusengaphambili, kanye nokukhathala ngaphansi kwezimo zokusebenza ezidinga amandla. Amaphutha amancane okucacisa angaphakamisa ukungqubuzana, akhuthaze ukushelela, noma afinyeze impilo yokuthwala isikhathi eside ngaphambi kokuba uhlelo lufinyelele isivinini salo esihlosiwe. Lesi sihloko sichaza izici ezibalulekile eziqhuba ukukhetha, kufaka phakathi i-contact angle, isu lokulayisha kusengaphambili, isiqondiso somthwalo, ukuthambisa, kanye nemikhawulo yesivinini, ukuze ukwazi ukuhlola izinketho zokuthwala ngokuqonda okucacile kokuthi isinqumo ngasinye sithinta kanjani ukuthembeka, ukuziphatha kokushisa, kanye nokusebenza komshini jikelele.

Kungani Ukukhethwa Kwe-Angular Contact Ball Bearing Kuthinta Ukuthembeka

Emishinini ejikelezayo ngesivinini esikhulu, i-angular contact ball bearing isebenza njengesixhumi esibalulekile phakathi kokudluliselwa kwamandla ashukumisayo kanye ne-static housing. Ukukhetha ukwakheka kwe-bearing okulungile kusho ngqo ukuthembeka kokusebenza kanye nokuqina kokushisa kwezinhlelo ezifana nama-spindles amathuluzi omshini, i-turbomachinery, kanye nama-actuator ezindizayo. Lapho isivinini sokujikeleza sidlula i-1.5 million dN (ububanzi be-bore ngamamilimitha buphindaphindwa ngesivinini ku-RPM), umkhawulo wephutha ekucacisweni kwe-bearing uncipha kakhulu, okwenza izinqubo zokukhetha eziqinile zibe yimpoqo.

Ingozi yesivinini, ukulayisha kusengaphambili, kanye nokwehluleka

Ubudlelwano phakathi kwesivinini sokujikeleza, ukulayisha kwangaphambili kwangaphakathi, kanye nokwehluleka okukhulu akulona ulayini.amabheringi ebhola lokuxhumana eliyi-angularukusheshisa, amandla e-centrifugal aqhuba izakhi ezigingqikayo ziphumele ngaphandle zibhekene nomzila womjaho wendandatho yangaphandle. Lesi senzo esiguquguqukayo sishintsha i-engeli yokuxhumana yokusebenza futhi singandisa ukulayisha kwangaphakathi okusebenzayo ngamaphesenti afinyelela ku-30 ​​ngesivinini esidlula i-15,000 RPM.

Uma ukulayisha kwangaphambili okungaguquki kokuqala kuphezulu kakhulu, lokhu kwanda okuguquguqukayo kubangela ukuqhuma kokushisa, okuholela ekuwohlokeni okusheshayo kokugcoba kanye nokuchitheka okuncane ngaphambi kwesikhathi. Ngokuphambene nalokho, ukulayisha kwangaphambili okunganele kuvumela amabhola ukuthi ashelele kunokuba agingqike, okudala ukuguguleka okukhulu kokunamathela kanye nokwehluleka kwekheji. Ukuqonda leli bhalansi kuyimbangela eyinhloko yokuthembeka kwemishini isikhathi eside.

Izimo zokusebenza okufanele zichazwe kuqala

Ngaphambi kokuhlola amajiyometri athile okuthwala, onjiniyela kumele basungule imvilophu enembile yezimo zokusebenza. Lokhu kudinga ukumaka imithwalo ephezulu neqhubekayo ye-radial kanye ne-axial, ukubala ububanzi bokushisa bokusebenza obulindelwe, kanye nokuchaza umjikelezo womsebenzi.

Isibonelo, i-spindle esebenza njalo ku-24,000 RPM idinga isu lokuphatha ukushisa elihluke kakhulu kunendlela eqhuba ukusheshisa okusheshayo, okungavamile ku-30,000 RPM. Ukusungula la mapharamitha ayisisekelo kuqinisekisa ukuthi izinqumo ezilandelayo mayelana nama-engeli okuxhumana nezinto zokwakha zisekelwe kudatha yokusebenza engokoqobo kunokuba kube ukulinganisa ukusebenza okuvamile.

Izindlela Eziyinhloko Zokukhetha Ubuchwepheshe

Ukuhumusha amapharamitha okusebenza abe yizincazelo zokuthwala ngokomzimba kudinga ukuqonda okujulile kwe-geometry yangaphakathi kanye nemikhawulo yemishini. I-angular contact ball bearing yakhelwe ngendlela ekhethekile ukwamukela imithwalo ehlanganisiwe, kodwa ukuyilungiselela kahle ezindaweni ezisheshayo kudinga ukuhlelwa okunembile kokwakheka kwayo kwangaphakathi.

I-engeli yokuxhumana, i-geometry, ikheji, kanye nokulayisha kusengaphambili

I-engeli yokuxhumana iyisiguquli esiyisisekelo sejiyometri esilawula ukusatshalaliswa komthwalo kanye nekhono lesivinini. Ukucushwa okujwayelekile kwesivinini esiphezulu kuvame ukusebenzisa ama-engeli okuxhumana angu-15° noma angu-25°. I-engeli engu-15° inciphisa isilinganiso sokushwibeka nokugoqa, inciphisa ukungqubuzana kwangaphakathi futhi ivumela isivinini esiphezulu sokujikeleza, yize idela ukuqina kwe-axial. I-engeli engu-25° inikeza ukuvumelana okulinganiselayo, okwandisa ukuqina kwe-axial ngenkathi kunciphisa umkhawulo wesivinini esiphezulu cishe ngo-15% kuya ku-20% uma kuqhathaniswa nohlobo lwe-15°.

Ngaphezu kwalokho, ukwakheka kwekheji kubalulekile; izinhlelo zokusebenza zesivinini esikhulu zivame ukusebenzisa amakheji alula, aqondiswa yindandatho yangaphandle enziwe nge-phenolic resin noma i-PEEK. Lawa ma-polymer athuthukile anciphisa isisindo se-centrifugal, anciphisa ukungqubuzana nezinto ezigoqekayo, futhi avimbele ukuzwakala kwekheji okubi kakhulu ngesivinini esikhulu.

Imikhawulo yesivinini kanye nezici zokusebenza

Imikhawulo yesivinini ilawulwa ngokuqinile yi-dN factor kanye nokuxhumana okuyinkimbinkimbi kokungqubuzana kwangaphakathi, isigaba sokulayisha kusengaphambili, kanye nokuthambisa. Ukuze bahambe kulezi ziguquguquko, onjiniyela bathembele ezintweni zokusebenza eziqhathaniswayo ukuze bafanise i-geometry yokuthwala nezidingo ze-kinematic zesicelo.

Ukukhetha i-engeli efanele kudinga ukubala isilinganiso esiqondile semithwalo ye-axial ne-radial; ukucacisa i-engeli yokuxhumana ephezulu yesicelo esilawulwa yimithwalo ye-radial kuzodala ukulandelela ibhola okungekuhle futhi kusheshise ukukhathala.

Ukuqhathanisa Izinketho Zokuthwala

Ngale kwe-geometry yangaphakathi, ukukhethwa kwezinto zokwakha kanye nezindlela zokugcoba kumelela ithuba elibaluleke kakhulu lokucindezela imingcele yokusebenza kwe-angler contact ball bearing. Ukuvela kwezinhlelo zobumba ezithuthukisiwe kanye nokunemba kokugcoba kuye kwashintsha kakhulu amakhono okuthwala ngesivinini esikhulu.

Amabheringi e-ceramic ensimbi uma kuqhathaniswa ne-hybrid

Izinga lomkhakha le-amabheringi anembileiyinsimbi ye-chromium enekhabhoni ephezulu (njenge-52100 noma i-100Cr6), enikeza impilo yokukhathala enhle kakhulu ngaphansi kwezimo ezimaphakathi. Kodwa-ke, izinhlelo zokusebenza ezisheshayo zidinga kakhulu ama-bearings e-hybrid ceramic, ahlanganisa izindandatho zensimbi nezinto ezigoqayo ze-silicon nitride (Si3N4).

Amabhola e-silicon nitride alula cishe ngo-60% kunalawo ensimbi. Lokhu kuncipha okukhulu kobukhulu kunciphisa amandla e-centrifugal kanye nokushelela kwe-gyroscopic emgwaqweni womjaho wangaphandle, okuvumela ama-hybrid bearing ukuthi afinyelele isivinini esiphezulu ngo-20% kuya ku-30% kunezinhlobo zensimbi yonke. Ngaphezu kwalokho, izinto ezingafani zisusa ingozi yokushisela okubandayo (galling) ngaphansi kwezimo zokuthambisa ezingaphansi futhi zinciphise kakhulu ukwanda kokushisa ngaphakathi kwe-bearing core.

Izindlela zokugcoba kanye nokushintshana

Ukugcoba akuyona nje into yokunakekela; kuyisithiyo esiyinhloko sokuklama. Ukugcoba okujwayelekile kwamafutha kubiza kakhulu futhi kwenza kube lula ukuklama izindlu, kodwa ngokuvamile kukhawulelwe esivinini sokusebenza esingaba ngu-1.0 kuya ku-1.2 million dN ngenxa yokuqongelela ukushisa kanye nemikhawulo yokuhambisa amafutha.

Ukuze kufinyelelwe isivinini esingaphezu kwezigidi ezingu-2.0 ze-dN, onjiniyela kumele bacacise izinhlelo zomoya-wamafutha (noma ukuthambisa okuncane kakhulu). Izinhlelo zomoya-wamafutha zifaka amaconsi amancane kawoyela aqondile, alinganisiwe ngqo endaweni yokuxhumana kwamabhere ngezikhawu zemizuzu eyi-1 kuya kwemi-5. Lokhu kunikeza ubukhulu befilimu ye-elastohydrodynamic obuhle kakhulu ngenkathi ngesikhathi esifanayo kusetshenziswa umoya ocindezelwe ukupholisa amabhere futhi kudale ingcindezi enhle ukuvimbela ukungena kokungcola.

Ukucaciswa, Ukutholwa Kwemithombo, kanye Nokuhlolwa Kokuhambisana Nemithetho

Ukucacisa i-angular contact ball bearing efanele kuyisigaba sokuqala senqubo yobunjiniyela. Ukuqinisekisa ukuthi izingxenye ezithengiwe ziyahlangabezana nemininingwane eqondile, zivela kubaphakeli abafanelekayo, futhi ziphathwa kahle kubalulekile ekulondolozeni ukuthembeka kobunjiniyela bohlelo lwesivinini esikhulu.

Imininingwane ebalulekile kanye nedatha yokufaka

Ukubekezelelana kokunemba akuxoxiswana ngakho ekusetshenzisweni kwesivinini esikhulu. Ama-bearings kumele achazwe ku-ABEC eqinile (Annular)IKomidi Lobunjiniyela Bezinsimbi) noma amazinga e-ISO. Ngezinhlelo zokusebenza ze-spindle-grade, ukubekezelelana kwe-ABEC 7 (ISO P4) noma i-ABEC 9 (ISO P2) kuyimpoqo. Lezi zigaba zilawula ukulawulwa okuqinile kakhulu kububanzi be-bore, ububanzi bangaphandle, kanye nokugijima kwe-radial.

Izingxenye zokuhlangana kumele zinamathele ezindinganisweni zokulinganisa nokubekezelelana kwejometri (GD&T). Ukufaka ibhere le-ABEC 9 kushafti enama-micrometer angu-5.0 okugijima kuqeda ngokuphelele ukunemba kwebhere futhi kubangela ukudlidliza okulimazayo kwe-harmonic.

Iziqu zomhlinzeki kanye namaphuzu okuqhathanisa

Iziqu zomhlinzeki zidinga ukuhlolwa okujulile kwamakhono okukhiqiza kanyeizinhlelo zokuphatha ikhwalithiAbathengi kufanele bagunyaze isitifiketi se-ISO 9001 njengesisekelo, kanye ne-AS9100 edingekayo kwizicelo zezindiza.

Amaphuzu abalulekile okuqhathanisa ngesikhathi sokuhlolwa komhlinzeki afaka amazinga okukhubazeka abonisiwe (izilinganiso eziqondiwe zivame ukuwela ngaphansi kwezingxenye ezingama-50 ngesigidi) kanye nezinqubo zokulandelela. Ngaphezu kwalokho, izikhathi zokuhola zama-bearings ebhola lokuxhumana eliqondile kakhulu zingasukela emavikini ayi-12 kuya kwayi-16 ngenxa yezinqubo eziyinkimbinkimbi zokugaya nokufanisa, okudinga amaqembu okuthenga ukuthi asungule izivumelwano eziqinile zokubikezela kanye nokuphepha kwesitoko ukuvimbela ukuphazamiseka komugqa wokuhlanganisa.

Ukuphatha, ukugcina, ukufaka, kanye nokuhambisa izinto

Amandla esivinini esiphezulu ebhereyitha le-ABEC 7 noma 9 angabhujiswa ngokushesha ngokuphathwa kabi. Ukufakwa kumele kwenzeke endaweni ehlanzekile, okungcono kuhlangabezane nezindinganiso ze-ISO Class 7, ukuvimbela ukungcola kwezinhlayiya.

Ama-bearings kumele ahlale emaphaketheni awo okuqala, avaliwe kuze kube yisikhathi esiqondile sokufakwa ukuze kuvinjelwe ukubola kanye nokuwohloka kwento yokuvimbela ukugqwala efakwe efektri. Ngaphezu kwalokho, izindawo zokugcina kumele zigcine ukulawulwa kwesimo sezulu okuqinile, ngokuvamile kubambe amazinga okushisa aphakathi kuka-20°C no-25°C kanye nomswakama ongaphansi kuka-60%.

Ukuqedela Isinqumo Sokukhetha

Ukukhethwa kokugcina kwe-angular contact ball bearing kudinga ukuhlanganisa amapharamitha wejometri, isayensi yezinto ezibonakalayo, kanye namaqiniso ochungechunge lokuhlinzeka kube yisinqumo sobunjiniyela obuhlangene. Lesi sigaba sidinga ukunamathela ngokuqinile enkambisweni yokuhlola ehlelekile ukuze kugwenywe ukucaciswa ngokweqile okubizayo noma ukungasebenzi kahle okuyinhlekelele.

Inqubo yokukhetha isinyathelo ngesinyathelo

Inqubo yokukhetha ehlelekile iqala ngokubala inani le-dN elidingekayo kanye nokumaka imithwalo ephezulu kakhulu eguquguqukayo. Okwesibili, onjiniyela kumele bakhethe i-engeli yokuxhumana enikeza ukuqina kwe-axial okudingekayo ngaphandle kokudlula imikhawulo yokushisa ngesivinini esiqondiwe.

Okwesithathu, ukukhetha phakathi kokwakhiwa kwe-ceramic yensimbi yonke kanye ne-hybrid kuhlolwa ngokusekelwe kumkhawulo we-dN kanye nesikhathi sokukhathala esidingekayo. Okwesine, indlela yokugcoba iyaqedwa, kulinganiswa ubulula bamafutha ngokumeleneikhono lesivinini esikhulukwezinhlelo zomoya kawoyela. Okokugcina, isigaba sokunemba kanye namanani aqondile okulayisha kusengaphambili kuyachazwa, okuqinisekisa ukuthi ibhereyi izosebenzisana kahle nokubekezelelana okufakwe ngomshini kweshaft kanye nendlu.

Imithetho yezinqumo zokuhwebelana kokusebenza

Imithetho yezinqumo ivame ukudinga ukubheka ukusebenza okuqinile kanye nokushintshana kwezomnotho. Isibonelo, ukucacisa ama-hybrid ceramic bearings kuletha i-multiplier yezindleko engu-2.0x kuya ku-3.0x uma kuqhathaniswa nama-standard steel bearings. Kodwa-ke, uma uhlelo lokusebenza lusebenza endaweni yokuthambisa engaphansi, i-hybrid ceramic bearings ingaletha isikhathi sokuphila sokusebenza esiphindwe kathathu kuya kahlanu, okuholela ezindleko eziphansi kakhulu zobunikazi.

Ngokufanayo, onjiniyela kumele balinganisele ukulayisha kusengaphambili ngokumelene nesivinini; ukwandisa isigaba sokulayisha kusengaphambili kusuka ku-'Light' kuya ku-'Medium' kwandisa ukuqina kohlelo cishe ngo-20%, kodwa ngasikhathi sinye kunciphisa isivinini esiphezulu esivunyelwe ngo-10% kuya ku-15% ngenxa yokwanda kokukhiqizwa kokushisa okungqubuzanayo. Ukuqedela ukukhetha kusho ukulinganisa lezi zindlela eziqondile ngokumelene nezinhloso zokusebenza eziyinhloko zomshini.

Izinto Ezibalulekile Okufanele Uzicabangele

• Iziphetho ezibaluleke kakhulu kanye nesizathu sokuthwala ibhola lokuxhumana eliyi-angular
• Imininingwane, ukuhambisana, kanye nokuhlolwa kwengozi okufanele kuqinisekiswe ngaphambi kokuthi uzibophezele
• Izinyathelo ezilandelayo ezisebenzayo kanye nezixwayiso abafundi abangazisebenzisa ngokushesha

imibuzo ejwayelekile ukubuzwa

Ngingayikhetha kanjani i-engeli yokuxhumana engcono kakhulu yokusetshenziswa ngesivinini esikhulu?

Sebenzisa u-15° ukuze uthole isivinini esiphezulu kanye nemithwalo ye-axial elula, u-25° ukuze uthole ibhalansi yokuqina kwesivinini, kanye no-40° ikakhulukazi emithwalweni yokusunduza esindayo. Qondanisa i-engeli nesilinganiso sakho sangempela se-axial/radial load.

Kufanele ngiyikhethe nini i-hybrid ceramic angular contact ball bearing?

Khetha i-hybrid ceramic uma isivinini siphezulu kakhulu, ukushisa kumele kuncishiswe, noma kudingeka isikhathi eside sokuphotha. Amabhola e-silicon nitride anciphisa amandla e-centrifugal futhi asiza ukulawula ukushelela ku-RPM ephakeme.

Kungani ukulayisha kusengaphambili kubaluleke kangaka kuma-bearings ebhola lokuxhumana elisheshayo eliyi-angular?

Ukulayisha kusengaphambili okuningi kakhulu kungakhuphula ukungqubuzana, izinga lokushisa, kanye nengozi yokubaleka kokushisa; okuncane kakhulu kungabangela ukushelela kwebhola kanye nomonakalo wekheji. Setha ukulayisha kusengaphambili ngokusekelwe kwisivinini, umthwalo, ukuthambisa, kanye nomjikelezo womsebenzi.

Yiluphi ulwazi lwesicelo okufanele ngilulungiselele ngaphambi kokucela i-bearing evela ku-DEMY Bearings?

Nikeza usayizi webhore, i-RPM, imithwalo ye-radial kanye ne-axial, izinga lokushisa lokusebenza, indlela yokugcoba, umjikelezo womsebenzi, kanye nokuhlelwa kokuyifaka. Lokhu kusiza i-DEMY ukuncoma ibhere lokuxhumana eliqondile elifanele ngokunembe kakhudlwana.

Ingabe i-DEMY Bearings ingasekela i-OEM noma i-distributor ukuthola ama-angle contact ball bearings?

Yebo. I-DEMY inikeza izinketho zokuthwala ezisekelwe kukhathalogi zama-OEM, abasabalalisi, kanye nabakhiqizi bemishini, ngokusekelwa kokukhiqiza okugxile ekuqondeni kanye nokuhlola kwezinhlelo zokusebenza zesivinini esikhulu zezimboni.