Yuav ua li cas rau ultra precision txheej txheem bearing
Dec 30, 2022
Dab tsi yog ultra-precision sib tsoo?
Ultra-precision sib tsoo yog ib hom kev noj mov kom ua tiav micro sib tsoo ntawm cov txheej txheem tiav.Qhov saum npoo ua ntej ultra-tiav machining feem ntau precision tig thiab sib tsoo.
Tshwj xeeb yog hais txog nyob rau hauv zoo lubrication thiab txias tej yam kev mob, nrog nplua-grained abrasive (whet) rau exert ib tug me me siab ntawm lub workpiece, thiab nyob rau hauv cov kev taw qhia ntawm ntsug qhuav workpiece rotation, kev sib hloov ntawm ib tug tej yam ceev ntawm lub workpiece kom ceev thiab luv reciprocating. oscillation txav ntawm txoj kev ua tiav.
Ultra-precision sib tsoo yog cov txheej txheem machining ib txwm ntawm kev sib tsoo los ntawm cov zaus me me oscillations ntawm whetstone, aiming ntawm kev txhim kho qhov zoo ntawm lub workpiece. Nws yog dav siv nyob rau hauv ntau industries xws li bearings, tsheb, hydraulics thiab pneumatics, tshwj xeeb tshaj yog nyob rau hauv kev lag luam bearing. Tam sim no, nws yog lub ntsiab kawg machining txheej txheem ntawm lub puab ua hauj lwm nto ntawm bearings.
Dab tsi yog bearing ultra-precision machining?
Bearing super xov, tseem hu ua super xov, yog txheej txheem micro sib tsoo. Rau high-precision bearings, feem ntau lub nplhaib dov nto thiab ua hauj lwm nto ntawm lub dov lub cev yuav tsum tau ultra-tiav.
Ultra-finish machining muaj cov cuab yeej ua haujlwm sib txawv, cov txheej txheem kev ua haujlwm tsis zoo ib yam, txhawm rau ua tiav cov txheej txheem geometric raug, qhov yuav tsum tau ua kom zoo, nws yog qhov yuav tsum tau xav txog cov cuab yeej, cuab yeej, whetstone, sib tsoo kua, thiab txawm tias cov txheej txheem sib tsoo. ib feem ntawm lub xeev.
Moresuperhard muaj ntau yam kev sib tsoo log rau ID, OD, tsis muaj kev sib tsoo, superfinishing thiab lapping nrog rau pob zeb diamond thiab CBN hnav cov cuab yeej rau kev sib tsoo bearing rings thiab profileing log.
Dab tsi yog lub luag haujlwm ntawm bearing ultra-precision machining?
Nyob rau hauv cov txheej txheem ntawm dov bearing manufacturing txheej txheem, ultra precision bearing nplhaib ua yog thaum kawg ntawm tus txheej txheem, kom txo los yog tshem tawm kev sib tsoo cov cuab yeej cuab tam ntawm ncig sib txawv, kho cov duab ntawm channel yuam kev, refining nws nto roughness, txhim kho lub cev thiab txhua yam khoom, nto txo. kev vibration thiab suab nrov ntawm bearing, txhim kho kev pab cuam lub neej ntawm bearing, plays lub luag haujlwm tseem ceeb, tshwj xeeb raws li hauv qab no:
1. tuaj yeem txo qhov ripple degree.
Nyob rau hauv tus txheej txheem ntawm super xov, thiaj li yuav xyuas kom meej tias lub whetstone ib txwm ua ntawm lub ncov thiab tsis sib cuag nrog lub trough, lub arc ntawm kev sib cuag ntawm lub whetstone thiab lub workpiece yog loj dua los yog sib npaug zos rau lub wavelength ntawm lub nto corrugations. ntawm lub workpiece. Nyob rau hauv txoj kev no, kev sib cuag lub siab ntawm lub ncov loj dua, thiab lub ncov convex raug tshem tawm, yog li txo cov corrugations.
2. Txhim kho qhov zawj qhov yuam kev ntawm pob bearing raceway.
Super precision tuaj yeem txhim kho qhov zawj qhov yuam kev ntawm li 30% raceway.
3. Nws tuaj yeem tsim kev ntxhov siab rau ntawm qhov chaw superrefined.
Nyob rau hauv tus txheej txheem ntawm super xov, lub ntsiab txias yas deformation tshwm sim, yog li ntawd cov residual compressive kev nyuaj siab yog tsim nyob rau saum npoo ntawm lub workpiece tom qab super tiav.
4. Nws tuaj yeem ua rau thaj tsam ntawm qhov chaw ua haujlwm ntawm lub nplhaib.
Tom qab super precision sib tsoo, nws tiv tauj thaj chaw ua haujlwm ntawm lub nplhaib bearing tuaj yeem nce los ntawm 15% - 40% mus rau 80% - 95% tom qab sib tsoo.
Kev tsom xam ntawm bearing ultra-precision machining txheej txheem
Bearing ultra-precision machining feem ntau tuaj yeem muab faib ua peb theem:
1. Txiav
Thaum lub ntsej muag ntawm whetstone thiab ntxhib convex ncov ntawm lub raceway nto kev sib cuag, vim yog qhov chaw sib cuag me me, lub zog ntawm chav tsev yog loj, nyob rau hauv ib qho kev siab, lub whetstone yog thawj zaug rau "rov qab txiav" nyhuv. ntawm cov kabmob workpiece, yog li ntawd ib feem ntawm whetstone nto abrasive tawm thiab tawg, exposing ib co tshiab ntse abrasive thiab ntug. Nyob rau tib lub sijhawm, lub ncov ntawm lub ntsej muag ntawm lub ntsej muag ntawm cov kabmob ua haujlwm tau raug txiav nrawm, thiab lub ncov ntawm lub ntsej muag thiab kev sib tsoo deterioration txheej ntawm qhov chaw ntawm cov kabmob workpiece raug tshem tawm los ntawm kev txiav thiab thim rov qab txiav. Cov theem no yog hu ua theem txiav, uas feem ntau ntawm cov nyiaj pub dawb raug tshem tawm.
2. Cov kabmob ib nrab txiav theem
Raws li kev ua haujlwm txuas ntxiv, qhov saum npoo ntawm cov kabmob workpiece yog maj mam hauv av tiaj tus.
Nyob rau lub sijhawm no, qhov chaw sib cuag ntawm whetstone thiab qhov chaw ua haujlwm nce, qhov siab ntawm ib chav tsev txo qis, qhov txiav qhov tob yuav txo qis, thiab lub peev xwm txiav tsis muaj zog.
Nyob rau tib lub sijhawm, qhov pores ntawm qhov chaw ntawm whetstone raug thaiv, thiab whetstone yog nyob rau hauv ib nrab txiav. Cov theem no yog lub npe hu ua ib nrab-txiav theem ntawm cov kabmob tiav, nyob rau hauv uas cov kab txiav rau ntawm qhov chaw ntawm cov kabmob workpiece ua ntiav thiab cov luster tsaus tshwm.
3. Ua tiav cov kabmob
Cov theem no tuaj yeem muab faib ua ob kauj ruam: ib qho yog theem kev sib tsoo; Qhov thib ob yog kev sib tsoo tom qab txiav txiav.
Sib tsoo kev hloov theem:
abrasive hais los ntawm kev txo qis, abrasive ntug yog hauv av, nti oxide pib embed nyob rau hauv qhov sib txawv ntawm whetstone, abrasive hmoov blocked whetstone pores, yog li ntawd cov abrasive hais tsuas yog tsis muaj zog txiav, nrog rau extrusion thiab polishing, ces lub workpiece nto roughness yog. sai txo, nto ntawm lub whetstone muaj dub nti oxide txuas.
Txhob txiav kev sib tsoo:
Thaum cov roj pob zeb thiab kev sib txhuam ntawm qhov chaw ua haujlwm tau du, qhov chaw sib cuag tau zoo heev, lub siab poob qis, lub abrasive tsis tuaj yeem nkag mus rau hauv cov roj zaj duab xis thiab qhov chaw ua haujlwm sib cuag, thaum lub zog ntawm cov khoom siv hluav taws xob thiab lub zog ntawm cov whetstone yog sib npaug, lub whetstone yog floating. Thaum lub sij hawm tsim cov roj zaj duab xis, lub sij hawm no tsis muaj kev txiav. Cov theem no yog tshwj xeeb rau ultra-tiav.
