Iav machining txheej txheem, txiav tsis thiab cov cuab yeej yuav tsum tau yog tias lub iav yog qhov nyuaj dhau los tig thiab lub machining efficiency yuav tsum tau txhim kho.

Iav yog lub hauv paus tseem ceeb kis tau tus mob hauv kev lag luam tsheb. Feem ntau, txhua lub tsheb muaj 18 ~ 30 hniav. Qhov zoo ntawm cov iav ncaj qha cuam tshuam rau lub suab nrov, kev ruaj ntseg thiab kev pabcuam lub neej ntawm lub tsheb. Gear processing machine tool yog ib qho cuab yeej siv tshuab thiab cov cuab yeej tseem ceeb hauv kev lag luam tsheb. Lub ntiaj teb lub tsheb tsim lub zog xws li Tebchaws Meskas, Lub Tebchaws Yelemees thiab Nyij Pooj kuj yog cov khoom siv tshuab ua cov cuab yeej tsim khoom siv zog. Raws li kev txheeb cais, ntau dua 80% ntawm lub tsheb iav hauv Suav teb tau ua tiav los ntawm cov khoom siv hauv tsev. Nyob rau tib lub sijhawm, kev lag luam tsheb siv ntau dua 60% ntawm cov cuab yeej siv tshuab ua tshuab, thiab kev lag luam tsheb yuav ib txwm yog lub cev tseem ceeb ntawm cov cuab yeej siv tshuab.

Gear processing technology

1. casting thiab dawb paug ua

Kub tuag forging tseem yog ib tug dav siv dawb paug txheej txheem rau automotive iav qhov chaw. Nyob rau hauv xyoo tsis ntev los no, cross wedge dov tshuab tau dav txhawb nyob rau hauv ncej machining. Cov tshuab no yog tshwj xeeb tshaj yog tsim rau kev ua billets rau complex qhov rooj shafts. Nws tsis tsuas yog muaj siab precision, me me tom qab machining nyiaj pub dawb, tab sis kuj muaj ntau lawm efficiency.

2. normalizing

Lub hom phiaj ntawm cov txheej txheem no yog kom tau txais qhov hardness haum rau cov iav tom qab txiav thiab npaj cov microstructure rau qhov kawg ntawm kev kho cua sov, thiaj li yuav txo tau cov kev kho cua sov deformation. Cov khoom siv ntawm cov iav hlau siv feem ntau yog 20CrMnTi. Vim muaj kev cuam tshuam loj ntawm cov neeg ua haujlwm, cov khoom siv thiab ib puag ncig, qhov cua txias ceev thiab txias uniformity ntawm lub workpiece yog qhov nyuaj rau kev tswj, uas ua rau cov hardness dispersion loj thiab tsis sib xws metallographic qauv, uas ncaj qha cuam tshuam rau cov hlau txiav thiab qhov kawg kev kho cua sov, ua rau loj thiab tsis zoo thermal deformation thiab uncontrolled ib feem zoo. Yog li ntawd, cov txheej txheem isothermal normalizing yog saws. Kev xyaum tau ua pov thawj tias isothermal normalizing tuaj yeem hloov pauv qhov tsis zoo ntawm kev normalizing, thiab cov khoom zoo yog ruaj khov thiab txhim khu kev qha.

3. tig

Txhawm rau ua kom tau raws li qhov yuav tsum tau ua ntawm kev ua haujlwm siab-precision iav, cov iav blanks yog tag nrho cov txheej txheem los ntawm CNC lathes, uas yog mechanically clamped tsis regrinding lub cuab tam tig. Kev ua tiav ntawm lub qhov taub, lub ntsej muag kawg thiab sab nraud yog ua tiav synchronously nyob rau hauv ib lub sij hawm clamping, uas tsis tsuas yog ua kom lub verticality yuav tsum tau ntawm lub puab lub qhov thiab kawg lub ntsej muag, tab sis kuj xyuas kom meej lub me me dispersion ntawm loj iav blanks. Yog li, qhov tseeb ntawm cov iav tsis muaj kev txhim kho thiab kev ua haujlwm zoo ntawm cov iav tom ntej yog ua kom ntseeg tau. Tsis tas li ntawd, kev ua haujlwm siab ntawm NC tshuab dhos machining kuj txo cov khoom siv thiab muaj kev lag luam zoo.

4. hobbing thiab iav shaping

Ordinary iav hobbing tshuab thiab iav shapers tseem siv dav rau kev ua haujlwm iav. Txawm hais tias nws yog qhov yooj yim los kho thiab tswj, qhov kev tsim khoom tau qis. Yog tias muaj peev xwm loj tiav, ntau lub tshuab yuav tsum tau tsim nyob rau tib lub sijhawm. Nrog rau txoj kev loj hlob ntawm txheej txheej technology, nws yog heev yooj yim rau recoat hobs thiab plungers tom qab sib tsoo. Kev pabcuam lub neej ntawm cov cuab yeej coated tuaj yeem txhim kho tau zoo, feem ntau ntau dua 90%, txo cov kev hloov pauv ntawm cov cuab yeej thiab lub sijhawm sib tsoo, nrog cov txiaj ntsig tseem ceeb.

5. shaving

Radial iav shaving tshuab yog dav siv nyob rau hauv loj tsheb iav ntau lawm vim hais tias ntawm nws cov high efficiency thiab yooj yim realization ntawm cov kev hloov uas yuav tsum tau ntawm tus tsim cov hniav profile thiab cov hniav kev taw qhia. Txij li thaum lub tuam txhab yuav lub tshwj xeeb radial iav shaving tshuab ntawm Italian tuam txhab rau kev hloov nyob rau hauv 1995, nws tau mature nyob rau hauv daim ntawv thov ntawm no technology, thiab cov kev ua tau zoo yog ruaj khov thiab txhim khu kev qha.

6. Kev kho cua sov

Lub tsheb iav yuav tsum tau carburizing thiab quenching kom ntseeg tau tias lawv cov khoom zoo. Cov khoom siv kho cua sov ruaj khov thiab txhim khu kev qha yog qhov tseem ceeb rau cov khoom uas tsis muaj kev sib tsoo tom qab kev kho cua sov. Lub tuam txhab tau qhia txog qhov txuas ntxiv carburizing thiab quenching ntau lawm kab ntawm German Lloyd's, uas tau ua tiav cov txiaj ntsig kev kho cua sov zoo.

7. sib tsoo

Nws yog tsuas yog siv los ua kom tiav cov iav kho cua sov sab hauv lub qhov, lub ntsej muag kawg, ncej sab nraud thiab lwm qhov chaw los txhim kho qhov tseeb qhov tseeb thiab txo qhov siab geometric kam rau ua.

Cov iav ua tau txais lub suab lub voj voog fixture rau qhov chaw thiab clamping, uas tuaj yeem ua tau zoo kom ntseeg tau qhov tseeb ntawm cov hniav thiab cov khoom siv, thiab tau txais cov khoom txaus siab.

8. ua tiav

Qhov no yog los xyuas thiab ntxuav cov pob thiab burrs ntawm lub iav qhov chaw ntawm kev sib kis thiab tsav qag ua ntej sib dhos, thiaj li tshem tawm cov suab nrov thiab cov suab nrov txawv txav los ntawm lawv tom qab sib dhos. Mloog suab los ntawm kev sib koom ua ke ib leeg lossis saib kev sib koom ua ke sib txawv ntawm tus neeg ntsuas kev paub. Cov khoom siv hluav taws xob sib kis tau tsim los ntawm cov tuam txhab tsim khoom suav nrog clutch vaj tse, cov vaj tsev sib kis thiab cov vaj tsev sib txawv. Clutch vaj tse thiab kev sib kis vaj tse yog cov khoom siv thauj khoom, uas feem ntau yog ua los ntawm txhuas alloy tuag los ntawm kev tuag casting tshwj xeeb. Cov duab yog irregular thiab complex. Cov txheej txheem dav dav yog milling qhov sib koom ua ke → machining txheej txheem qhov thiab txuas lub qhov → ntxhib tho qhov bearing qhov → nplua boring bearing qhov thiab nrhiav tus pin qhov → tu → to thiab kuaj pom.

Parameters thiab yuav tsum tau ntawm iav txiav cov cuab yeej

Cov iav yog deformed heev tom qab carburizing thiab quenching. Tshwj xeeb tshaj yog rau cov iav loj, qhov seem deformation ntawm carburized thiab quenched lub voj voog sab nrauv thiab sab hauv lub qhov feem ntau loj heev. Txawm li cas los xij, rau txoj kev tig ntawm carburized thiab quenched iav sab nrauv lub voj voog, tsis muaj cov cuab yeej tsim nyog. Lub cuab yeej bn-h20 tsim los ntawm "Valin superhard" rau kev sib tshuam sib sib zog nqus ntawm quenched steel tau kho qhov deformation ntawm carburized thiab quenched iav txheej lub voj voog sab hauv lub qhov thiab lub ntsej muag kawg, thiab pom ib qho kev sib tshuam sib cuam tshuam cov cuab yeej, Nws tau ua kom muaj kev vam meej thoob ntiaj teb. thaj chaw ntawm kev sib tshuam txiav nrog cov cuab yeej superhard.

Gear carburizing thiab quenching deformation: iav carburizing thiab quenching deformation feem ntau yog tshwm sim los ntawm kev sib xyaw ua ke ntawm cov kev ntxhov siab uas tau tshwm sim thaum lub sij hawm machining, thermal stress thiab structural stress generated thaum tshav kub kub kho, thiab qhov hnyav deformation ntawm lub workpiece. Tshwj xeeb tshaj yog rau cov iav loj loj thiab cov iav loj, cov iav loj loj kuj tseem yuav ua rau cov deformation tom qab carburizing thiab quenching vim lawv cov modulus loj, sib sib zog nqus carburizing txheej, ntev carburizing lub sij hawm thiab nws tus kheej qhov hnyav. Txoj cai deformation ntawm cov iav loj loj: sab nraud ntawm lub voj voog ntxiv qhia pom qhov sib cog lus pom tseeb, tab sis nyob rau hauv cov kev taw qhia ntawm cov hniav dav ntawm lub iav ncej, qhov nruab nrab yog txo, thiab ob qhov kawg yog me ntsis nthuav. Txoj cai deformation ntawm lub nplhaib iav: Tom qab Carburizing thiab quenching, sab nraud ntawm lub nplhaib loj yuav o. Thaum cov hniav dav sib txawv, cov kev taw qhia ntawm cov hniav dav yuav yog conical lossis lub duav nruas.

Iav tig tom qab carburizing thiab quenching: lub carburizing thiab quenching deformation ntawm lub nplhaib iav tuaj yeem tswj tau thiab txo qis rau qee qhov, tab sis nws tsis tuaj yeem zam tag nrho Rau kev kho deformation tom qab carburizing thiab quenching, cov hauv qab no yog ib qho kev sib tham luv luv ntawm qhov ua tau. ntawm tig thiab txiav cov cuab yeej tom qab carburizing thiab quenching.

Tig lub voj voog sab nrauv, sab hauv lub qhov thiab lub ntsej muag kawg tom qab carburizing thiab quenching: tig yog qhov yooj yim tshaj plaws los kho qhov deformation ntawm lub voj voog sab nrauv thiab sab hauv lub qhov ntawm lub carburized thiab quenched nplhaib iav. Yav dhau los, txhua yam cuab yeej, nrog rau cov cuab yeej superhard txawv teb chaws, tsis tuaj yeem daws qhov teeb meem ntawm kev sib tshuam sib cuam tshuam rau sab nrauv ntawm lub iav quenched. Valin superhard tau raug caw los ua cov cuab yeej tshawb fawb thiab kev tsim kho, "Kev txiav tsis sib xws ntawm cov hlau tawv tawv ib txwm yog qhov teeb meem nyuaj, tsis hais txog cov hlau tawv tawv ntawm HRC60, thiab cov nyiaj deformation loj. Thaum tig lub hardened steel ntawm kev kub ceev, yog hais tias lub workpiece muaj intermittent txiav, lub cuab tam yuav ua kom tiav lub machining nrog ntau tshaj 100 shocks ib feeb thaum txiav cov hardened steel, uas yog ib tug zoo kev sib tw rau cov kev cuam tshuam ntawm lub cuab tam. " Suav riam Association kws txawj hais li ntawd. Tom qab ib xyoos ntawm kev sim rov ua dua, Valin superhard tau qhia txog lub npe ntawm superhard txiav cuab yeej rau Tig Hardened Steel nrog muaj zog tsis tu ncua; Qhov kev sim tig yog ua tiav ntawm lub iav sab nrauv lub voj voog tom qab carburizing thiab quenching.

Kev sim ntawm tig cylindrical iav tom qab carburizing thiab quenching

Cov iav loj (ntiv nplhaib iav) tau deformed tiag tiag tom qab carburizing thiab quenching. Lub deformation ntawm lub voj voog sab nrauv ntawm lub nplhaib iav yog txog 2 hli, thiab qhov hardness tom qab quenching yog hrc60-65. Thaum lub sijhawm ntawd, nws nyuaj rau cov neeg siv khoom kom pom lub taub loj loj, thiab cov nyiaj siv ua haujlwm loj, thiab kev sib tsoo ua haujlwm tsawg dhau. Thaum kawg, lub carburized thiab quenched iav tau tig.

Txiav linear ceev: 50-70m / min, txiav qhov tob: 1.5-2mm, txiav nrug: 0.15-0.2mm / kiv (hloov raws li roughness yuav tsum tau)

Thaum tig lub quenched iav excircle, lub machining tiav nyob rau hauv ib lub sij hawm. Thawj cov cuab yeej ceramic tuaj yeem tsuas yog ua tiav ntau zaus los txiav tawm qhov deformation. Tsis tas li ntawd, cov ntug kev sib tsoo yog qhov hnyav, thiab cov nqi siv ntawm cov cuab yeej yog siab heev.

Cov txiaj ntsig kev ntsuas cov txiaj ntsig: nws muaj kev cuam tshuam ntau dua li cov khoom siv los ntawm silicon nitride ceramic, thiab nws lub neej kev pabcuam yog 6 npaug ntawm silicon nitride ceramic cuab yeej thaum txiav qhov tob yog nce peb zaug! Qhov kev ua tau zoo yog nce los ntawm 3 zaug (nws tau siv los ua peb zaug ntawm kev txiav, tab sis tam sim no nws ua tiav los ntawm ib zaug). Qhov saum npoo roughness ntawm lub workpiece kuj ua tau raws li tus neeg siv khoom xav tau. Qhov tseem ceeb tshaj plaws yog tias daim ntawv ua tsis tiav zaum kawg ntawm lub cuab yeej tsis yog qhov kev txhawj xeeb tawg, tab sis lub ntsej muag zoo li qub. Qhov kev sib cuam tshuam tig quenched iav excircle kev sim tsoo lub tswvyim hais ua dabneeg uas cov cuab yeej superhard hauv kev lag luam tsis tuaj yeem siv rau kev sib tshuam sib zog ua kom tawv tawv! Nws tau ua rau muaj kev nkag siab zoo hauv kev kawm ntawm cov cuab yeej txiav!

Nto tiav ntawm qhov nyuaj tig sab hauv lub iav tom qab quenching

Noj cov kev sib tshuam ntawm cov iav sab hauv lub qhov nrog cov roj zawj ua piv txwv: lub neej kev pab cuam ntawm kev sim txiav cov cuab yeej ncav cuag ntau tshaj 8000 meters, thiab qhov kawg yog nyob rau hauv Ra0.8; Yog tias lub cuab yeej superhard nrog polishing ntug siv, txoj kev xaav ntawm cov hlau tawv tawv tuaj yeem ncav cuag Ra0.4. Thiab cov cuab yeej zoo lub neej tuaj yeem tau txais

Machining kawg lub ntsej muag ntawm iav tom qab carburizing thiab quenching

Raws li daim ntawv thov raug siv ntawm "tig es tsis txhob sib tsoo", cubic boron nitride hniav tau siv dav hauv kev tsim khoom ntawm kev tig ntawm lub ntsej muag kawg tom qab tshav kub. Piv nrog rau kev sib tsoo, kev ua haujlwm nyuaj ua haujlwm zoo heev.

Rau carburized thiab quenched iav, cov kev xav tau rau cov cutters yog siab heev. Ua ntej, ntu ntu txiav yuav tsum muaj siab hardness, cuam tshuam tsis kam, toughness, hnav tsis kam, nto roughness thiab lwm yam khoom ntawm lub cuab yeej.

txheej txheem cej luam:

Rau kev tig tom qab carburizing thiab quenching thiab rau lub ntsej muag kawg tig, zoo tib yam welded composite cubic boron nitride cov cuab yeej tau nrov. Txawm li cas los xij, rau qhov seem deformation ntawm lub voj voog sab nrauv thiab sab hauv lub qhov ntawm carburized thiab quenched loj iav nplhaib, nws yog ib qho teeb meem nyuaj rau tua cov deformation nrog ib tug loj npaum li cas. Kev sib hloov ntawm quenched steel nrog Valin superhard bn-h20 cubic boron nitride cuab tam yog ib qho kev vam meej hauv kev lag luam cov cuab yeej, uas yog qhov zoo rau kev nthuav dav dav ntawm "tig es tsis txhob sib tsoo" txheej txheem hauv kev lag luam iav, thiab tseem pom cov teb rau qhov teeb meem ntawm hardened iav cylindrical tig cov cuab yeej uas tau perplexed rau ntau xyoo. Nws tseem yog ib qho tseem ceeb heev kom luv luv lub voj voog ntawm cov iav nplhaib thiab txo cov nqi tsim khoom; Bn-h20 series cutters yog lub npe hu ua lub ntiaj teb qauv ntawm muaj zog sib quas ntus tig quenched steel hauv kev lag luam.