Nto Finish Capabilities ntawm CNC Precision Machining
1. Hom Ntog Roughness ntau yam los ntawm txheej txheem
Standard ntxhib milling kev khiav hauj lwm feem ntau tsim deg roughness qhov tseem ceeb ntawm 3.2 thiab 12.5 micrometers Ra, yam ntxwv los ntawm pom cov cuab yeej cim thiab yuav tsum tau tom qab tiav rau precision daim ntaub ntawv. Tiav milling nrog optimized tsis muaj peev xwm ua tiav 0.8 mus rau 3.2 micrometers Ra, nrog rau kev pom zoo mus txog kwv yees li 0.4 micrometers los ntawm kev nplua stepover, siab spindle speeds, thiab ntse tooling. Rough turning operations feem ntau yield 1.6 mus rau 6.3 micrometers Ra, thaum precision tig nrog zoo txau, polished inserts, thiab ruaj khov teeb tuaj yeem ncav cuag 0.4 mus rau 1.6 micrometers Ra, nrog rau kev pom zoo mus txog 0.2 micrometers. Drilling ua haujlwm feem ntau tsim 1.6 txog 6.3 micrometers Ra, tab sis reaming txhim kho qhov no mus rau 0.4 mus rau 1.6 micrometers thiab precision reaming tuaj yeem ncav cuag li 0.2 micrometers. Precision sib tsoo ncua kev muaj peev xwm mus rau 0.05 mus rau 0.4 micrometers Ra, nrog rau qhov kev pom zoo mus txog 0.025 micrometers thaum ua tiav ntawm cov tshuab nruj nrog cov log zoo. CNC honing tsim cross-hatch qauv ntawm 0.05 txog 0.4 micrometers Ra, kuj muaj peev xwm ncav cuag 0.025 micrometers rau lubrication retention nto. Lapping raws li cov txheej txheem dawb abrasive ua tiav 0.012 txog 0.1 micrometers Ra, nrog cov txiaj ntsig zoo nyob ze 0.01 micrometers, txawm tias cov khoom tshem tawm qeeb heev. Polishing thiab buffing, txawm tias phau ntawv los yog neeg hlau, yield 0.025 mus rau 0.2 micrometers Ra, nrog rau kev pom zoo mus txog 0.01 micrometers rau qhov kawg zoo nkauj lossis ua haujlwm tiav. Superfinishing, cov txheej txheem tshwj xeeb rau cov kabmob sib tw thiab hydraulic spools, ua tiav 0.01 txog 0.1 micrometers Ra, nrog kev ua kom pom tseeb txog 0.005 micrometers. Ib qho -pob zeb diamond tig ntawm cov hlau tsis yog-ferrous hlau tsim kho qhov muag- qib nto ntawm 0.005 txog 0.05 micrometers Ra, nrog rau cov xwm txheej tshwj xeeb ua tiav 0.002 micrometers.
2. Cov yam ntxwv cuam tshuam rau kev ua tiav qhov tiav
Txiav tsis sawv cev rau qhov ncaj qha cuam tshuam rau ntawm qhov chaw zoo nkauj. Pub tus nqi yog qhov tseem ceeb tshaj plaws, raws li theoretical roughness ua raws li kev sib raug zoo uas qhov siab tshaj - mus rau - hav qhov siab kwv yees li sib npaug pub squared faib los ntawm yim npaug ntawm lub qhov ntswg vojvoog. Cov nqi noj qis dua ncaj qha txo qhov kev xav tau ntawm qhov roughness. Kev txiav ceev feem ntau txhim kho qhov ua tiav los ntawm kev txo qis ua - nce ntug tsim, txawm tias kev ceev ntau dhau yam tsis muaj nti khiav tawm tuaj yeem ua rau deg zoo. Qhov tob ntawm kev txiav hauv kev ua tiav yuav tsum tau txo qis rau 0.05 mus rau 0.2 millimeter kom txo tau qhov system deflection thiab kev co.
Cov cuab yeej geometry thiab cov xwm txheej cuam tshuam rau qhov ua tiav zoo. Loj lub qhov ntswg radii ntawm 1.2 mus rau 2.4 millimeters rau xa cov chips tsim nyob rau hauv ib tug ntev arc, txo cov pom pom cov cim. Qhov zoo rake cov ces kaum txo kev txiav quab yuam thiab cov khoom tawg. Cov cuab yeej hnav, txawm tias hnav flank, hnav crater, los yog ntug chipping, degrades tiav heev thiab yuav tsum tau tiag tiag - sij hawm saib xyuas los yog teem caij hloov. Cov cuab yeej runout yuav tsum raug txwv kom tsawg dua 5 micrometers los ntawm precision collets, shrink - haum tuav, los yog hydraulic chucks.
Cov khoom siv ntawm cov khoom siv ua haujlwm tsim cov kev txwv qhov kawg. Aluminium alloys xws li 6061 thiab 7075 muab kev ua haujlwm zoo heev thiab yooj yim ua tiav 0.2 txog 0.4 micrometers Ra. Dawb-machining steels xws li 12L14 thiab 11SMn30 muab kev ua tiav zoo nrog cov qauv ntsuas. Stainless hlau suav nrog 304 thiab 316 nthuav tawm ua haujlwm-txhim kho qhov xav tau uas xav tau cov cuab yeej ntse thiab kev ua kom pom tseeb kom tiv thaiv qhov degradation. Titanium alloys xws li Ti-6Al-4V tam sim no tsis zoo thermal conductivity nyuaj, ua tiav hauv qab 0.4 micrometers Ra nyuaj yam tsis muaj kev tshwj xeeb. Hardened steels tshaj 45 HRC yuav tsum tau sib tsoo los yog nyuaj tig nrog cubic boron nitride los yog polycrystalline pob zeb diamond cov cuab yeej kom ua tiav precision nto.
Tshuab rigidity thiab stability tsim lub qab nthab ua kom tiav zoo. Spindle runout yuav tsum tau khaws cia hauv qab 2 micrometers rau kev ua tiav zoo. Kev tiv thaiv - kev ntsuas kev vibration suav nrog kev sib tw loj dampers, kev ua haujlwm nruj, thiab cov cuab yeej sib npaug tiv thaiv kev sib tham uas ua rau lub ntsej muag zoo. Thermal stability los ntawm qhov kub thiab txias -tswj ib puag ncig tiv thaiv qhov seem drift thaum precision hla.
Cov tswv yim coolant thiab lubrication muaj feem xyuam rau ob qho tib si nto tsim thiab thermal tswj. Siab -Lub siab txias txias ntawm 70 txog 150 bar ua haujlwm tau zoo tshem tawm cov chips thiab tswj qhov kub thiab txias. Qhov tsawg kawg nkaus kom muaj nuj nqis lubrication lossis cryogenic txias yuav nyiam rau cov ntaub ntawv tshwj xeeb los tiv thaiv thermal puas. Kev ua kom txias txias kom zoo tiv thaiv cov khoom seem tsim thiab corrosion uas yuav ua rau degrade nto kev ncaj ncees.
3. Cov Txheej Txheem Txheej Txheem rau Ultra-Precision Finishes
Ua kom tiav cov hom phiaj saum npoo tiav yuav tsum tau ua raws cov txheej txheem tsim nyog. Txuj kev ua tiav ntawm 3.2 txog 6.3 micrometers Ra haum rau cov khoom siv kho tshuab thiab cov khoom siv los ntawm cov pa CNC milling thiab tig. Precision machined tiav ntawm 0.8 mus rau 1.6 micrometers Ra, tsim nyog rau cov rooj zaum bearing, sealing nto, thiab nruab nrab -precision fits, yuav tsum tau optimized CNC tsis. Zoo machined nto ntawm 0.2 mus rau 0.4 micrometers Ra, xav tau rau hydraulic pistons thiab valve Cheebtsam, thov siab -ceev CNC nrog zoo tooling thiab ua tau burnishing los yog polishing. Hauv av thiab honed nto ntawm 0.05 mus rau 0.1 micrometers Ra, yuav tsum tau rau roj txhaj nozzles thiab aerospace bearings, yuav tsum tau precision sib tsoo ua raws li honing los yog lapping. Super-cov npoo tiav hauv qab 0.025 micrometers Ra, qhov tseem ceeb rau cov khoom siv kho qhov muag, cov khoom siv hluav taws xob, thiab cov qauv ntsuas ntsuas, yuav tsum tau ua kom tiav, lapping, lossis ib zaug - taw tes pob zeb diamond tig hauv qhov chaw tswj hwm.
4. Kev Ntsuas thiab Kev Ntsuas
Kev ntsuas qhov kawg ntawm qhov chaw ntiav cov txheej txheem sib txawv nyob ntawm qhov hom phiaj. Hu rau stylus profileometers nrog cov lus qhia pob zeb diamond tseem muaj rau Ra qhov tseem ceeb ntawm 0.025 thiab 12.5 micrometers, taug qab qhov tseeb qhov profile. Tsis yog-hu rau lub teeb dawb interferometry thiab confocal microscopy ua haujlwm softer nto los yog tiav hauv qab 0.1 micrometers Ra qhov twg stylus hu tuaj yeem ua rau qhov chaw puas. Atomic force microscopy muab nanometer-scale roughness ntsuam xyuas rau saum npoo hauv qab 0.01 micrometers Ra, nthuav tawm atomic- theem kev ntxhib los mos cov ntsiab lus.
5. Kev txwv thiab kev txiav txim siab
Kev lag luam kev lag luam cuam tshuam rau kev xaiv cov txheej txheem. Ua tiav Ra qis dua 0.4 micrometers ntawm cov pa CNC yuav tsum tau nce lub sij hawm voj voog thiab cov cuab yeej siv, feem ntau ua rau kev sib tsoo lossis lapping tus nqi ntau dua - zoo hauv qab no qhov pib. Cov ntaub ntawv txwv txwv tsis pub cov ntaub ntawv ferrous los ntawm kev ua tiav kho qhov muag -qib pob zeb diamond- tig tiav ncaj qha, yuav tsum tau tshaj tawm - txheej txheem polishing lossis npib tsib xee plating ua raws li pob zeb diamond tig. Geometry txwv nrog rau cov yam ntxwv sab hauv, cov kab noj hniav sib sib zog nqus, thiab cov contours nyuaj txwv kev nkag mus rau kev ua tiav zoo. Batch sib xws xav kom nruj cov txheej txheem kev txheeb cais, kev tswj lub neej, thiab kev tswj ib puag ncig kom tswj tau Ra 0.2 micrometers thoob plaws ntau lawm.
Xaus
Niaj hnub nimno CNC precision machining ua tiav qhov chaw tiav los ntawm Ra 3.2 micrometers mus rau kwv yees li 0.2 micrometers los ntawm kev ua kom zoo tshaj plaws txiav, cuab yeej siv tshuab, thiab tshuab. Rau cov kev xav tau hauv qab 0.1 micrometers Ra, cov txheej txheem ntxiv nrog rau kev sib tsoo, honing, lapping, superfinishing, lossis pob zeb diamond tig ua qhov tsim nyog. Kev ua tiav tiav yog nyob ntawm kev sib koom ua ke ntawm kev ua kom zoo ntawm lub tshuab muaj peev xwm, cov khoom siv, cov cuab yeej siv tshuab, thiab kev tswj ib puag ncig, sib npaug tiv thaiv kev lag luam ntawm cov khoom ntim thiab cov nqi ib feem. Kev nkag siab txog cov kev sib raug zoo no ua rau muaj kev paub txog cov txheej txheem xaiv uas ua tau raws li qhov yuav tsum tau ua yam tsis muaj kev nce nqi ntxiv.
