Dongguan Portable Cov cuab yeej ua cov chaw tsim khoom ntawm cov cuab yeej siv tshuab hauv qhov chaw, peb tsim cov cuab yeej ntawm qhov chaw siv tshuab, suav nrog cov kab tho txawv txav, portable flange tig tshuab, portable milling tshuab thiab lwm yam cuab yeej ntawm qhov chaw raws li koj xav tau. ODM / OEM txais tos raws li xav tau.
Nyob rau ntawm qhov chaw tho txawv barRaws li ib feem ntawm cov kab tho txawv txav, peb tuaj yeem ua qhov tho txawv ntev txog 2000-12000 meters raws li qhov sib txawv. Thiab qhov tho txawv txoj kab uas hla tuaj yeem hloov kho los ntawm 30mm-250mm raws li nyob rau ntawm qhov chaw pabcuam.
Kev ua cov txheej txheem ntawm boring tuav feem ntau suav nrog cov kauj ruam hauv qab no:
Ua cov ntaub ntawv: Ua ntej, raws li qhov loj thiab cov duab ntawm qhov tho txawv yuav tsum tau ua tiav, xaiv cov khoom tsim nyog rau cov khoom siv txiav.
Hammering: Rauj cov ntaub ntawv txiav los txhim kho cov qauv thiab kev ua haujlwm ntawm cov ntaub ntawv.
Annealing: Los ntawm kev kho annealing, qhov kev ntxhov siab thiab qhov tsis xws luag hauv cov khoom raug tshem tawm, thiab cov yas thiab tawv ntawm cov khoom zoo tuaj.
Rough machining : Ua cov txheej txheem ua ntej, suav nrog kev xa, milling thiab lwm yam txheej txheem, los tsim cov duab yooj yim ntawm qhov tho txawv.
Quenching thiab tempering: Los ntawm quenching thiab tempering kev kho mob, cov khoom tau txais cov khoom zoo txhua yam, suav nrog lub zog siab thiab siab tawv.
Kev Ua tiav: Los ntawm kev sib tsoo thiab lwm yam txheej txheem, qhov tho txawv yog ua tiav kom ua tiav qhov yuav tsum tau muaj qhov loj thiab cov duab raug.
Kub kub tempering: Ntxiv mus txhim kho cov khoom siv ntawm cov khoom thiab txo cov kev ntxhov siab sab hauv.
Kev sib tsoo: Ua qhov kawg sib tsoo ntawm qhov tho txawv kom ntseeg tau tias nws qhov zoo thiab qhov raug.
Tempering: Tempering rov ua dua kom ruaj khov thiab txo qhov deformation.
Nitriding: Qhov saum npoo ntawm qhov tho txawv yog nitrided los txhim kho nws cov tawv tawv thiab hnav tsis kam.
Cia (kev teeb tsa): Tom qab ua tiav tag nrho, qhov tho txawv yog khaws cia lossis ncaj qha rau kev siv.
Kev xaiv cov khoom siv thiab kev kho cua sov rau cov kab tho txawv
Cov khoom tho txawv feem ntau yog ua los ntawm cov khoom siv nrog lub zog siab, hnav tsis kam thiab muaj kev cuam tshuam siab, xws li 40CrMo alloy structural steel. Cov txheej txheem kev kho cua sov muaj xws li normalizing, tempering thiab nitriding. Normalizing tuaj yeem kho cov qauv, ua kom muaj zog thiab toughness; tempering tuaj yeem tshem tawm kev ntxhov siab thiab txo deformation; nitriding ntxiv txhim kho qhov tawv tawv thiab hnav tsis kam.
Tej teeb meem thiab cov kev daws teeb meem rau boring tuav
Cov teeb meem tshwm sim hauv cov txheej txheem tho txawv bar muaj xws li kev vibration thiab deformation. Txhawm rau txo qis kev vibration, ntau txoj kev txiav tuaj yeem siv tau, xws li siv lub tshuab txiav tho txawv, uas tuaj yeem txhim kho kev ua haujlwm zoo thiab ruaj khov.
Txhawm rau tswj kev deformation, kev kho cua sov kom zoo thiab kev hloov kho cov txheej txheem yuav tsum tau ua thaum ua. Tsis tas li ntawd, kev tswj deformation thaum lub sij hawm nyuaj nitriding kuj tseem ceeb heev, thiab kev ua tau zoo yuav tsum tau ua kom zoo los ntawm kev sim thiab kev hloov kho.
Qhov tho txawv baryog ib qho tseem ceeb ntawm cov cuab yeej siv tshuab. Nws tso siab rau ob lub ntsiab lus qhia coj mus rau pem hauv ntej thiab rov qab axially kom ua tiav axial pub. Nyob rau tib lub sijhawm, lub hollow spindle ua cov lus tsa suab los ntawm qhov tseem ceeb kis tau tus mob torque kom ua tiav qhov kev sib hloov ncig. Qhov tho txawv bar yog qhov tseem ceeb ntawm lub ntsiab lus ntawm lub tshuab cuab yeej, thiab nws cov khoom tsim tau zoo heev cuam tshuam rau kev ua haujlwm ntawm lub tshuab cuab yeej. Yog li ntawd, kev txheeb xyuas thiab kawm cov txheej txheem ntawm kev ua haujlwm ntawm qhov tho txawv bar yog qhov tseem ceeb rau kev ntseeg siab, ruaj khov thiab zoo ntawm cov cuab yeej siv tshuab.
Kev xaiv cov khoom siv tho txawv bar
Qhov tho txawv bar yog qhov tseem ceeb ntawm lub ntsiab kis tau tus mob thiab yuav tsum muaj cov cuab yeej siv siab zoo xws li khoov tsis kam, hnav tsis kam thiab cuam tshuam toughness. Qhov no yuav tsum tau hais tias lub boring bar muaj txaus toughness nyob rau hauv cov tub ntxhais thiab txaus hardness ntawm qhov chaw. Cov pa roj carbon ntsiab lus ntawm 38CrMoAlA, cov khoom siv hlau zoo tshaj plaws, ua rau cov hlau muaj lub zog txaus, thiab cov ntsiab lus alloy xws li Cr, Mo, thiab Al tuaj yeem tsim cov txheej txheem sib cais nrog cov pa roj carbon thiab sib npaug hauv cov matrix. Thaum raug kev nyuaj siab sab nraud, nws plays ib tug neeg kho tshuab barrier thiab ntxiv dag zog. Ntawm lawv, qhov sib ntxiv ntawm Cr tuaj yeem ua kom muaj zog ntawm cov txheej nitriding, txhim kho cov hardenability ntawm cov hlau thiab cov tub ntxhais lub zog; Qhov sib ntxiv ntawm Al tuaj yeem ua kom cov tawv tawv ntawm cov txheej nitriding thiab ua kom zoo dua cov nplej; Mo tsuas yog tshem tawm cov npauj npaim ntawm cov hlau. Tom qab xyoo ntawm kev sim thiab tshawb nrhiav, 38CrMoAlA tuaj yeem ua tau raws li qhov tseem ceeb ntawm kev ua haujlwm ntawm cov khoom siv tho txawv thiab tam sim no yog thawj qhov kev xaiv rau cov khoom siv tho txawv.
Boring bar kho cua sov kev npaj thiab ua haujlwm
Kev kho cua sov: normalizing + tempering + nitriding. Boring bar nitriding yog cov kauj ruam kawg hauv kev kho cua sov. Txhawm rau ua kom cov boring bar core muaj cov khoom tsim nyog, tshem tawm cov kev ntxhov siab, txo qhov deformation thaum lub sij hawm nitriding txheej txheem, thiab npaj cov qauv rau cov txheej txheem nitriding zoo tshaj plaws, lub boring bar yuav tsum tau kho kom zoo ua ntej kub kho ua ntej nitriding, uas yog normalizing thiab tempering.
(1) Normalizing. Normalizing yog ua kom sov cov hlau kom siab tshaj qhov kub thiab txias, ua kom sov rau lub sijhawm, thiab tom qab ntawd txias nrog cua. Cov cua txias ceev kuj ceev heev. Tom qab normalizing, lub normalizing qauv yog ib tug blocky "ferrite + pearlite", ib feem qauv yog refined, lub zog thiab toughness yog nce, lub internal kev nyuaj siab yog txo, thiab txiav kev ua tau zoo. Kev ua haujlwm txias tsis tas yuav tsum ua ua ntej normalizing, tab sis oxidation thiab decarburization txheej uas tsim los ntawm normalizing yuav ua rau muaj kev tsis zoo xws li nce brittleness thiab tsis txaus hardness tom qab nitriding, yog li cov nyiaj txaus yuav tsum tau tso rau hauv cov txheej txheem normalizing.
(2) Tempering. Tus nqi ntawm kev ua tom qab normalizing yog loj, thiab ib tug loj npaum li cas ntawm mechanical kev nyuaj siab yuav raug generated tom qab txiav. Txhawm rau tshem tawm cov txheej txheem kev ntxhov siab tom qab kev ua haujlwm ntxhib thiab txo qhov deformation thaum lub sij hawm nitriding, nws yog ib qho tsim nyog yuav tsum tau ntxiv kev kho cua sov tom qab ua haujlwm ntxhib. Tempering yog kub-kub tempering tom qab quenching, thiab cov qauv tau txais yog zoo troostite. Cov khoom tom qab tempering muaj txaus toughness thiab lub zog. Ntau qhov tseem ceeb yuav tsum tau tempered.
(3) Qhov sib txawv ntawm cov qauv matrix normalizing thiab "normalizing + tempering" matrix qauv. Cov qauv matrix tom qab normalizing yog blocky ferrite thiab pearlite, thaum lub matrix qauv tom qab "normalizing + tempering" yog zoo troostite qauv.
(4) Nitriding. Nitriding yog ib txoj kev kho cua sov uas ua rau saum npoo ntawm qhov muaj zog thiab hnav tsis kam, thaum lub hauv paus tseem muaj zog thiab tawv. Cov hlau uas muaj chromium, molybdenum lossis txhuas yuav ua tiav cov txiaj ntsig zoo tom qab nitriding. Qhov zoo ntawm lub workpiece tom qab nitriding: ① Qhov saum npoo ntawm lub workpiece yog silver-grey thiab matte. ② Lub hardness ntawm lub workpiece yog ≥1 000HV, thiab lub hardness ntawm lub deg tom qab sib tsoo yog ≥900HV. ③ Qhov tob ntawm nitriding txheej yog ≥0.56mm, thiab qhov tob tom qab sib tsoo yog> 0.5mm. ④ Nitriding deformation yuav tsum tau runout ≤0.08mm. ⑤ Brittleness qib 1 txog 2 yog qhov tsim nyog, uas tuaj yeem ua tiav hauv kev tsim khoom tiag tiag, thiab nws zoo dua tom qab sib tsoo.
(5) Qhov sib txawv ntawm cov qauv ntawm "normalizing + nitriding" thiab "normalizing + tempering + nitriding". Cov nyhuv nitriding ntawm "normalizing + quenching thiab tempering + nitriding" yog qhov zoo dua li "normalizing + nitriding". Nyob rau hauv cov qauv nitriding ntawm "normalizing + nitriding", muaj qhov pom tseeb blocky thiab ntxhib koob-zoo li tus brittle nitrides, uas tseem tuaj yeem siv los ua ib qho kev siv rau kev tshuaj xyuas qhov tshwm sim ntawm nitriding txheej shedding ntawm boring tuav.
Cov txheej txheem tiav ntawm boring bars:
Txheej txheem: blanking → normalizing → drilling thiab ntxhib tig qhov chaw → ntxhib tig → quenching thiab tempering → semi-tiav tig → ntxhib sib tsoo ntawm lub voj voog → ntxhib sib tsoo ntawm taper qhov → khawb → milling ntawm txhua qhov zawj → flaw detection → ntxhib sib tsoo ntawm qhov tseem ceeb sib tsoo (reservance) vajvoog → semi-tiav kev sib tsoo ntawm puab lub qhov → nitriding → semi-tiav kev sib tsoo ntawm taper qhov (tso tseg zoo sib tsoo nyiaj) → semi-tiav kev sib tsoo ntawm txheej txheej (tso tseg nplua sib tsoo nyiaj) → sib tsoo ntawm keyway → zoo sib tsoo ntawm lub voj voog → nplua sib tsoo ntawm taper qhov → polishing.
Ua tiav cov txheej txheem ntawm boring tuav. Txij li thaum lub bar tho txawv yuav tsum tau nitrided, ob semi-tiav txheej txheej txheej txheej txheem tshwj xeeb. Thawj qhov kev sib tsoo semi-tiav yog npaj ua ntej nitriding, lub hom phiaj yog los teeb lub hauv paus zoo rau kev kho nitriding. Nws yog tsuas yog los tswj cov nyiaj pub dawb thiab geometric qhov tseeb ntawm qhov tho txawv ua ntej sib tsoo kom ntseeg tau tias qhov nyuaj ntawm cov txheej nitriding tom qab nitriding yog siab dua 900HV. Txawm hais tias qhov khoov deformation me me thaum lub sij hawm nitriding, qhov deformation ua ntej nitriding yuav tsum tsis raug kho, txwv tsis pub nws tsuas yog loj dua qhov qub deformation. Peb lub Hoobkas txheej txheem txiav txim siab tias qhov nyiaj pub dawb ntawm lub voj voog sab nraud thaum lub sij hawm thawj qhov kev sib tsoo yog 0.07 ~ 0.1 hli, thiab cov txheej txheem kev sib tsoo thib ob yog npaj tom qab kev sib tsoo zoo ntawm lub qhov tapered. Cov txheej txheem no nruab ib qho kev sib tsoo hauv lub qhov tapered, thiab ob qhov kawg raug thawb. Ib qho kawg thawb lub qhov nruab nrab ntawm lub ntsej muag me me ntawm qhov tho txawv, thiab lwm qhov kawg thawb lub qhov nruab nrab ntawm qhov sib tsoo. Tom qab ntawd lub voj voog sab nrauv yog hauv av nrog lub hauv paus thav duab, thiab cov tub ntxhais sib tsoo tsis raug tshem tawm. Spline grinder yog tig mus zom qhov tseem ceeb. Qhov thib ob semi-tiav kev sib tsoo ntawm lub voj voog sab nrauv yog ua kom muaj kev ntxhov siab sab hauv tsim thaum lub sij hawm sib tsoo zoo ntawm lub voj voog sab nrauv ua ntej, kom qhov kev sib tsoo zoo ntawm txoj kev tseem ceeb yuav raug txhim kho thiab ruaj khov dua. Vim tias muaj lub hauv paus rau kev ua tiav ib nrab ntawm lub voj voog sab nrauv, qhov cuam tshuam ntawm txoj kev tseem ceeb thaum lub sij hawm sib tsoo zoo ntawm lub voj voog sab nrauv yog me me heev.
Txoj hauv kev tseem ceeb yog ua tiav siv lub tshuab sib tsoo, nrog rau ib qho kawg ntawm lub qhov nruab nrab ntawm lub ntsej muag me me ntawm qhov tho txawv thiab lwm qhov kawg tig mus rau qhov nruab nrab ntawm qhov sib tsoo. Nyob rau hauv txoj kev no, thaum sib tsoo, txoj kev tseem ceeb yog tig mus rau pem hauv ntej, thiab khoov deformation ntawm lub voj voog sab nraud thiab qhov ncaj ntawm lub tshuab cuab yeej txoj kev taw qhia tsuas yog cuam tshuam rau hauv qab ntawm qhov zawj, thiab muaj kev cuam tshuam me ntsis ntawm ob sab ntawm qhov zawj. Yog hais tias ib tug qhia rail grinder yog siv rau kev ua, lub deformation tshwm sim los ntawm lub straightness ntawm lub tshuab cuab tam guideway thiab lub deadweight ntawm lub boring bar yuav cuam tshuam qhov ncaj ntawm lub keyway. Nyob rau hauv dav dav, nws yog ib qho yooj yim mus siv ib tug spline grinder kom tau raws li qhov yuav tsum tau ntawm lub ncaj thiab parallelism ntawm txoj kev tseem ceeb.
Lub voj voog sab nrauv zoo sib tsoo ntawm qhov tho txawv yog nqa tawm ntawm kev sib tsoo universal, thiab txoj kev siv yog cov cuab yeej longitudinal qhov chaw sib tsoo txoj kev.
Lub runout ntawm lub tapered qhov yog ib tug loj tiav cov khoom raug ntawm lub tho txawv tshuab. Qhov kawg yuav tsum tau ua ntawm lub tapered lub qhov yog: ① Lub runout ntawm lub tapered qhov mus rau lub txheej txoj kab uas hla yuav tsum tau guaranteed 0.005mm nyob rau hauv lub kawg ntawm spindle thiab 0.01mm ntawm 300mm los ntawm qhov kawg. ② Qhov chaw tiv tauj ntawm lub qhov tapered yog 70%. ③ Tus nqi roughness ntawm lub qhov yog Ra = 0.4μm. Txoj kev ua tiav ntawm lub qhov tapered: ib qho yog tawm ntawm qhov nyiaj pub dawb, thiab tom qab ntawd kev sib cuag ntawm lub qhov tapered mus txog qhov kawg ntawm cov khoom raug los ntawm kev sib tsoo tus kheej thaum sib dhos; lwm qhov yog ua kom tau raws li cov kev cai ntawm kev ua haujlwm ncaj qha thaum lub sijhawm ua haujlwm. Peb lub Hoobkas tam sim no tau txais txoj kev thib ob, uas yog siv lub hau kom clamp lub nraub qaum kawg ntawm qhov tho txawv M76X2-5g, siv lub voj voog nruab nrab los teeb lub voj voog sab nraud φ 110h8MF nyob rau pem hauv ntej kawg, siv lub micrometer los kho lub voj voog sab nrauv φ 80js6, thiab zom lub qhov tapered.
Sib tsoo thiab polishing yog qhov kawg txheej txheem ntawm qhov tho txawv. Kev sib tsoo tuaj yeem tau txais qhov tseeb qhov tseeb thiab qhov roughness tsawg heev. Feem ntau hais lus, cov khoom ntawm cov cuab yeej sib tsoo yog softer dua li cov khoom siv ua haujlwm thiab muaj cov qauv zoo sib xws. Feem ntau siv yog cam khwb cia hlau sib tsoo cov cuab yeej (saib daim duab 10), uas yog tsim rau kev ua ntau yam khoom siv thiab kev sib tsoo zoo, tuaj yeem ua kom muaj kev sib tsoo zoo thiab ua haujlwm siab, thiab cov cuab yeej sib tsoo yog ib qho yooj yim los tsim thiab muaj tus nqi qis. Nyob rau hauv cov txheej txheem sib tsoo, cov kua sib tsoo tsis tsuas yog ua lub luag haujlwm hauv kev sib xyaw abrasives thiab lubricating thiab txias, tab sis kuj plays lub luag haujlwm tshuaj los ua kom cov txheej txheem sib tsoo. Nws yuav ua raws li qhov chaw ntawm lub workpiece, ua rau ib txheej ntawm oxide zaj duab xis rau ntawm qhov chaw ntawm lub workpiece sai sai, thiab ua lub luag hauj lwm nyob rau hauv smoothing lub ncov nyob rau saum npoo ntawm lub workpiece thiab tiv thaiv cov kwj deg ntawm lub workpiece. Cov abrasive siv rau hauv kev sib tsoo bar sib tsoo yog sib xyaw ntawm cov hmoov dawb corundum ntawm dawb txhuas oxide thiab kerosene.
Txawm hais tias qhov tho txawv bar tau ua tiav qhov tseeb qhov tseeb thiab qhov chaw qis qis tom qab sib tsoo, nws qhov chaw yog embedded nrog xuab zeb thiab dub. Tom qab lub boring bar sib sau ua ke nrog lub hollow spindle, dej dub ntws tawm. Txhawm rau tshem tawm cov xuab zeb sib tsoo rau ntawm qhov chaw tho txawv, peb lub Hoobkas siv cov cuab yeej ua polishing tus kheej los txhuam cov npoo ntawm qhov tho txawv nrog ntsuab chromium oxide. Cov nyhuv tiag tiag yog qhov zoo heev. Qhov saum npoo ntawm qhov tho txawv yog ci, zoo nkauj thiab corrosion-resistant.
Boring bar tshuaj xyuas
(1) Tshawb xyuas qhov ncaj. Muab ib khub ntawm V-shaped irons ntawm qhov siab sib npaug ntawm 0-theem platform. Muab qhov tho txawv rau ntawm V-shaped hlau, thiab txoj hauj lwm ntawm V-shaped hlau yog nyob ntawm 2/9L ntawm φ 110h8MF (saib daim duab 11). Lub siab ntev ntawm qhov ncaj ntawm tag nrho qhov ntev ntawm qhov tho txawv yog 0.01mm.
Ua ntej, siv lub micrometer los xyuas qhov isometry ntawm cov ntsiab lus A thiab B ntawm 2/9L. Qhov kev nyeem ntawv ntawm cov ntsiab lus A thiab B yog 0. Tom qab ntawd, tsis tas txav lub qhov tho txawv, ntsuas qhov siab ntawm qhov nruab nrab thiab ob qhov kawg ntawm cov ntsiab lus a, b, thiab c, thiab sau cov nqi; khaws lub boring bar axially nyob ruaj ruaj, tig lub tho txawv 90 ° ntawm tes, thiab siv lub micrometer los ntsuas qhov siab ntawm cov ntsiab lus a, b, thiab c, thiab sau cov nqi; Tom qab ntawd tig qhov tho txawv 90 °, ntsuas qhov siab ntawm cov ntsiab lus a, b, thiab c, thiab sau cov nqi. Yog tias tsis muaj qhov ntsuas qhov ntsuas tau tshaj 0.01mm, nws txhais tau tias nws tsim nyog, thiab rov ua dua.
(2) Txheeb xyuas qhov loj, roundness, thiab cylindricity. Sab nraud txoj kab uas hla ntawm qhov tho txawv yog kuaj nrog lub micrometer sab nraud. Faib tag nrho ntev ntawm polished nto ntawm qhov tho txawv bar φ 110h8MF rau hauv 17 qhov sib npaug, thiab siv ib lub cheeb ntawm sab nraud micrometer los ntsuas txoj kab uas hla hauv qhov kev txiav txim ntawm radial a, b, c, thiab d, thiab sau cov ntaub ntawv ntsuas hauv qhov tho txawv bar tshawb xyuas cov ntaub ntawv.
Cylindricity yuam kev yog hais txog qhov sib txawv ntawm txoj kab uas hla hauv ib qho kev taw qhia. Raws li tus nqi kab rov tav nyob rau hauv lub rooj, qhov yuam kev cylindricity nyob rau hauv ib qho kev taw qhia yog 0, qhov yuam kev nyob rau hauv b kev taw qhia yog 2μm, qhov yuam kev nyob rau hauv c kev taw qhia yog 2μm, thiab qhov yuam kev nyob rau hauv d kev taw qhia yog 2μm. Xav txog plaub cov lus qhia ntawm a, b, c, thiab d, qhov sib txawv ntawm qhov siab tshaj plaws thiab qhov tsawg kawg nkaus yog qhov tseeb cylindricality yuam kev ntawm 2μm.
Qhov yuam kev roundness yog muab piv nrog cov txiaj ntsig hauv kab ntsug ntawm lub rooj, thiab qhov siab tshaj plaws ntawm qhov sib txawv ntawm qhov tseem ceeb yog coj mus. Yog tias qhov kev ntsuam xyuas qhov tho txawv tsis ua haujlwm lossis ib qho ntawm cov khoom dhau qhov kev zam, nws yog ib qho tsim nyog yuav tsum tau sib tsoo thiab polishing txuas ntxiv mus txog thaum nws dhau mus.
Tsis tas li ntawd, thaum lub sij hawm soj ntsuam, yuav tsum tau them nyiaj mloog mus rau lub zog ntawm chav tsev kub thiab tib neeg lub cev kub (tuav micrometer) ntawm kev ntsuas ntsuas, thiab yuav tsum tau them nyiaj mloog mus rau kev tshem tawm negligent yuam kev, txo qhov cuam tshuam ntawm kev ntsuas qhov yuam kev, thiab ua qhov ntsuas qhov ntsuas kom raug raws li qhov ua tau.
Yog tias koj xav tau covntawm qhov chaw tho txawv barcustomzied, txais tos hu rau peb kom paub ntxiv.
