Hauv cov khoom siv tsis zoo thiab cov khoom siv sib tw, cov lim pom ntawm cov ntsia hlau tau siv dav. Txhawm rau txhawm rau txhim kho cov kev pab cuam lub neej ntawm cov ntsia hlau, cov ntswj quenching yog dav siv. Cov ntsia hlau tau tsuas yog hauv av, thiab lub precision tau lav los ntawm cov xov sib tsoo tshuab.Machining xov ntawm xov sib tsoo tshuab yog cov feem ntau siv txoj kev txiav kom tau txais qhov siab precision thiab qis nto roughness nyob rau hauv xov machining ntawm tam sim no. Nrog rau kev thov dav dav ntawm high precision quenched xov qhov chaw, qhov zoo ntawm kev sib tsoo xov tau zoo tag nrho.Qhov kev tsim khoom tiag tiag, txhawm rau kom tau txais qhov siab thiab qhov zoo ntawm lub hau ntswj, nws yog qhov tsim nyog yuav tsum muaj kev kawm tob ntawm nws cov tshuab sib tsoo.Coj cov ntsia hlau txhuas ntsib hauv kev xyaum tsim khoom ua piv txwv rau kev tshawb xyuas ncauj lus kom ntxaws.
2. Kev xaiv cov khoom siv ntsia hlau thiab kho cov cua sov
Cov khoom siv ntsia hlau ncaj qha cuam tshuam rau cov txheej txheem machining thiab cov yam ntxwv ntawm chaw ua haujlwm tom qab kho kub.Yog li no, ib qho teeb meem tseem ceeb hauv kev tsim cov khoom siv high-precision filament screws yog qhov kev xaiv tsim nyog ntawm cov khoom siv, feem ntau yog los ntawm cov khoom siv hlau, hlau tsis muaj steel, cov cuab yeej siv hlau tsis zoo los xaiv.Raws li cov txuj ci kev xav tau ntawm cov ntu raws li pom hauv daim duab L thiab cov txheej txheem kev kho cua sov thiab cov txheej txheem machining, 65Mn raug xaiv. Cov khoom siv tuaj yeem muab cov tawv tawv ntau ntawm 55 ~ 60HRC, thiab cov ntsia hlau txhuas muaj qhov siab ua kom muaj zog thiab hnav tsis kam.
Cov txheej txheem kho cua sov ntawm 65Mn cov khoom siv ntsia hlau yog quenching, tempering, kho txias thiab kub taws.Kev kub lub hnub nyoog loj yuav tsum tau ua rau cov ntsia hlau ua tom qab kev sib tsoo (ntxhib sib tsoo), thiab qhov kub tsis tshua muaj kev laus yuav tsum tau ua tom qab kev sib tsoo ib puag ncig (zoo tig), txhawm rau kom tshem tawm cov kev ntxhov siab hauv cov txheej txheem machining thiab txhim kho kev ruaj khov ntawm cov ntsia hlau txhuas.
Hauv cov txheej txheem ntawm kev kho cov cua sov, cov txhuas ntsia hlau yuav tsum tau them sai sai kom tsis txhob khoov ntawm kev deformation, sim tsis txhob siv cov txheej txheem ncaj, yog tias tsim nyog, tsuas tuaj yeem siv ncaj kub.Vim hais tias nyob rau hauv chav tsev kub ncaj ntsia hlau ntsia hlau, txawm hais tias nws zoo li yuav ncaj nyob rau hauv ib lub sijhawm luv luv, tab sis ob hnub lossis ib zaug kev sib tsoo yuav tsim tau qhov khoov deformation.
Npaj ua ntej tsoo
3.1 Tswj ntawm cov qhab nia
Ntsia txheej txheem ntsia hlau txheem yog qhov kawg ntawm lub qhov taub qhov nruab nrab, lub qhov taub dav dav yuav tsum siv hom B qhov nruab nrab qhov, nws tuaj yeem tiv thaiv lub ntsej muag kawg lub ntsej muag thiab cuam tshuam qhov tseeb ntawm qhov nruab nrab lub qhov, tib lub sijhawm qhov chaw nruab nrab yuav tsum ncav 6 o ~ 65 HRC qhov ua kom tawv, qhov nplig ntawm lub nruab nrab qhov yog qhov tseem ceeb kom paub tseeb ntawm cov pob ntsia hlau, nyob rau hauv pem hauv ntej ntawm kev sib tsoo ntxhib, kev sib tsoo zoo yog qhov yuav tsum npaj chaw Kong Xiu kev tshawb fawb tom qab quenching thiab txheej txheem kev laus.Qhov chaw tiv tauj ntawm nruab nrab ntawm lub qhov taub thiab lub nruab nrab yuav tsum yog 75% hauv kev sib tsoo thiab saum toj no 80% hauv kev sib tsoo zoo.Cov txheej txheem xaiv ntawm no yog siv rau 6-ib tog tawv alloy ntsiab scraping ntawm lub tshuab cuab yeej. Nws lub ntug muaj qhov ua haujlwm ntawm micro txiav thiab extruding, uas tuaj yeem kho qhov teeb meem duab geometric kev ua yuam kev ntawm nruab nrab lub qhov. Ntxiv mus, nws muaj qhov ua hauj lwm siab, lub neej ntev kev ua haujlwm thiab kev siv dag zog mus txog Ra0.8 m.Lub siab axial ntawm cov ntsia hlau txhuas yuav tsum tsis txhob loj dhau thaum sib tsoo kom tsis txhob deformation ntawm cov ntsia hlau txhuas.
3.2 Kho ntawm tshuab cuab yeej
Ntxiv rau qhov tseeb tshuab cuab tam hloov kho tau raws li cov lus qhia, xaiv raug thiab collocation dai lub log, muaj tseeb rau lub tshuab cuab yeej lubrication, yuav tsum tau tig rau sab saum toj ua ntej thiab tom qab sib tsoo tshuab cuab tam, txhim kho qhov tseeb ntawm cov kab ncaj, Kaum 60 ° taper qhov chaw thiab qhov chaw saum npoo zoo nkauj, thiab nruj tswj hwm qhov kev khiav tawm ntawm sab nrauv, yog li ua kom zoo tshaj plaws ua ntej thiab tom qab lub tshuab thiab ntsia hlau chaw qhov zoo ntawm kev sib tiv tauj ntawm, txhawm rau txhim kho qhov tseeb ntawm cov leadscrew sib tsoo.
3.3 Kev xaiv ntawm kev sib tsoo log
Lub sib tsoo log nrog dawb corundum abrasive thiab ceramic binder feem ntau haum rau kev sib tsoo hardened steel tuav.Vim tias nws nyuaj thiab nkim, hauv kev sib tsoo tsis yooj yim rau blunt, blunt abrasive nplej yog yooj yim yuav tawg rau hauv lub ntsej muag tshiab, txiav txiav zoo;Nws muaj kev kub tsis tshua muaj zog thiab kev sib tsoo, uas tuaj yeem txo cov ntsia hlau deformation, hlawv thiab tawg.Cov duab qhov tseeb ntawm kev sib tsoo lub log tuaj yeem tiv thaiv lub sijhawm ntev.Txhawm rau kom tau txais tus nqi qis dua qhov hnyav, kev sib tsoo cov log nrog cov nplua nplua thiab cov tawv tawv tuaj yeem xaiv tau.
Xaiv kev sib tsoo cov qauv thiab cov hniav sib tsoo
4.1 Kev sib tsoo hom
Muaj ob yam kev sib tsoo rau precision ua ntsia hlau: du sib tsoo thiab rov qab sib tsoo.Kev sib tsoo du yog qhov tau txais txiaj ntsig tag nrho ntawm qhov ua kom txias thiab tuaj yeem txo qhov thermal deformation ntawm cov ntsia hlau txhuas hauv qhov chaw sib tsoo.Kev rov qab sib tsoo tsis yog muaj txiaj ntsig zoo rau kev puv nchuav ntawm qhov txias, cov ntsia hlau tau yooj yim rau kev deformation, tab sis qhov kev txiav ua tiav zoo.Los ntawm cov txheej txheem ntsuas, nws pom tias qhov kev sib tsoo thim rov qab pib los ntawm lub taub hau khib yuav tsum zam, vim tias qhov cua sov deformation ntawm hom no yuav ua rau kom elongation ntawm cov ntsia hlau ntsia hlau mus rau tus Tsov tus tw, uas ua rau kev nce ntawm kev sib tsoo. ntawm sab xis ntawm lub hau ntswj ntsia hlau profile thiab ntu zuj zus ntawm sab laug sab.Yog li no, txoj kev sib tsoo pib los ntawm lub taub hau ncej tsis yog tsuas yog ua tau zoo hauv kev ua kom zoo nkauj txias, tab sis kuj tseem nyuaj rau kev ua kom kub deformation ntawm cov ntsia hlau txhuas, thiab cov kev taw qhia ntawm kev sib tsoo ua rau cov ntsia hlau ntsia hlau ua kom muaj kev ntxhov siab, uas tuaj yeem txo qhov radial khiav thiab kev co ntawm cov ntsia hlau txhuas, thiab yog qhov zoo rau kom tau txais qhov raug ntau dua thiab qhov cuam tshuam.
4.2 Kev xaiv ntawm cov hniav sib tsoo
Tus nqi sib tsoo raug zoo tuaj yeem txhim kho qhov npliag thiab zoo ntawm cov ntsia hlau, thiab txo qhov tsis xws thaj chaw xws li ripples thiab hlawv.Kev xaiv ntawm cov hniav sib tsoo yuav tsum ua tib zoo xav txog cov khoom siv thiab kev kho cua kub hardness ntawm lub workpiece, saum npoo, qhov loj me thiab qhov nyuaj ntawm kev sib tsoo lub log, ntxhib thiab zoo sib tsoo thiab lwm yam.
Kev ntsuas tawm ntawm qhov nrawm ntawm kev sib tsoo sib txuas hauv cov xov sib tsoo feem ntau yog 30 ~ 35m / s. Qhov siab dua linear ceev tuaj yeem xaiv thaum lub voos me me thiab qhov npliag yog qhov siab.Vim tias lub siab hardness ntawm cov ntsia hlau no, lub nrawm ntawm kev sib tsoo log yuav tsum txo qis kom raug.
Cov pob zeb sib tsoo, txhawm rau txhim kho kev tsim khoom, tuaj yeem siv qhov loj dua ntawm qhov ua haujlwm ceev thiab txiav qhov tob, nplua sib tsoo, thiaj li yuav tau txais qhov siab thiab qhov chaw zoo, yuav tsum siv lub zog me me ua haujlwm ceev thiab txiav qhov tob.Kev ua hauj lwm ceev yog xaiv tau 1 ~ 10r / min, thiab txiav qhov tob yog xaiv tau 0.01 ~ o. 03mm.
5 xaus lus
Hauv txoj kev xaus, kev tsim cov khoom lag luam ntawm high-precision hardened filament ua raws li kev xaiv cov khoom tsim nyog, kev tsim nyog ntawm cov kub thiab txias hauv kev tsim cov txheej txheem los ua kom muaj kev ruaj khov ntawm lawv qhov ntev, thiab xaiv thiab tswj cov yam tseem ceeb hauv kev sib tsoo. cov txheej txheem.Nws tau raug pov thawj los ntawm kev tsim ntau lawm tias cov khoom lag luam tsim los ntawm kev sib tsoo saum toj no yog ua raws li cov qauv tsim thiab qhov zoo yog ruaj khov.