CNC tig yog qhov tseem ceeb ntawm kev tsim cov txheej txheem rho tawm qhov twg ib qho -taw tes txiav cov cuab yeej tshem tawm cov khoom siv los ntawm kev sib hloov ua haujlwm los tsim cov khoom cylindrical. Aluminium, khoom plig rau nws txoj kev ua haujlwm zoo heev, lub zog - mus rau - qhov hnyav piv, thiab kev tiv thaiv corrosion, yog ib qho ntawm cov khoom siv ntau tshaj plaws. Tsab ntawv xov xwm no muab cov lus piav qhia ntawm cov ntsiab lus tseem ceeb rau kev ua tiav cov khoom siv txhuas ntawm CNC tshuab dhos, tsom rau kev xaiv cov khoom siv, cov cuab yeej siv, cov khoom siv, thiab cov txheej txheem ua kom zoo rau cov kws tshaj lij thiab cov kws tshaj lij engineering.
Kev xaiv cov khoom siv thiab cov yam ntxwv
Aluminium alloys rau tig yog feem ntau categorized rau wrought thiab cam khwb cia qib. Cov alloys feem ntau suav nrog 6000 series (piv txwv li, 6061-T6), paub txog lub zog zoo thiab ua haujlwm tau zoo, thiab 2000 series (xws li, 2011, 2024), uas muaj kev ua haujlwm siab thiab lub zog, feem. Cam khwb cia hlau zoo li A380 kuj nquag machined. Cov yam ntxwv ntawm cov khoom tseem ceeb cuam tshuam rau txoj kev tig yog:
- Machineability:Aluminium feem ntau muaj cov machinability siab, tso cai rau kev txiav nrawm thiab ua kom tiav qhov zoo.
- Ntxim nyiam ua -Up Edge (BUE):Mos aluminium alloys tuaj yeem ua raws li cov cuab yeej txiav, tsim BUE uas degrades nto tiav thiab tuaj yeem ua rau cov cuab yeej ua tsis tiav.
- Thermal conductivity:Aluminium lub siab thermal conductivity zoo hloov cov cua sov rau hauv cov chips, tab sis cov cua kub ntau dhau tuaj yeem ua rau cov khoom ua haujlwm tsis zoo lossis ua rau qhov tsis raug.
Tooling thiab ua hauj lwm
Xaiv cov cuab yeej tsim nyog yog qhov tseem ceeb rau kev ua tau zoo thiab zoo.
- Khoom siv:Polycrystalline Pob Zeb Diamond (PCD) yog qhov kev xaiv zoo tshaj plaws rau siab - ntim ntau lawm thiab ua kom tiav qhov zoo tshaj plaws ntawm txhuas. Nws hnyav hardness thiab hnav tsis kam ua rau lub neej ntev. Cov cuab yeej carbide nrog cov ntse ntse, polished zoo rake geometries yog tus nqi - siv tau zoo thiab muaj peev xwm ua tau zoo rau ntau daim ntawv thov.
- Tool Geometry:Nthuav txiav npoo nrog siab zoo rake cov ces kaum thiab loj clearance ces kaum yog qhov tseem ceeb. Qhov geometry no txhawb kev txiav dawb, txo qis txiav quab yuam, thiab ua kom cov nti khiav tawm tau zoo, yog li tiv thaiv chip re- txiav thiab BUE tsim.
- Kev ua haujlwm:Precision chucks, collets, thiab fixtures yuav tsum muab nruj clamping los tiv thaiv siab rotational speeds thiab txiav quab yuam. Kev ua haujlwm kom raug yog qhov tseem ceeb rau kev tswj xyuas qhov sib npaug thiab qhov tseeb qhov tseeb.
Txiav Parameters thiab Coolant Strategy
Optimizing txiav tsis yog qhov sib npaug ntawm cov khoom tsim tau, lub neej ntawm lub cuab yeej, thiab ib feem zoo.
- Txiav ceev (Vc):Aluminium tso cai rau kev txiav ceev, feem ntau yog li ntawm 200 txog 1000 m / min (650 txog 3300 SFM) lossis ntau dua, nyob ntawm cov hlau thiab cov cuab yeej. Kev nrawm dua feem ntau txhim kho nto tiav tab sis yuav tsum sib npaug nrog cov cuab yeej siv lub neej xav txog.
- Feed Rate (fn):Pub tus nqi feem ntau yog teem ntawm 0.05 thiab 0.30 mm/rev (0.002 txog 0.012 IPR). Tus nqi pub ntau dua ua rau cov hlau tshem tawm ntau dua tab sis tuaj yeem cuam tshuam qhov chaw tiav.
- Qhov tob ntawm Txiav (ap):Qhov no feem ntau txiav txim siab los ntawm cov Tshuag yuav raug tshem tawm. Kev ua haujlwm roughing siv qhov tob ntawm qhov txiav loj dua, thaum cov hlais tiav siv cov txiav sib dua rau qhov kawg ntawm qhov ntev thiab qhov tseeb ntawm qhov chaw.
- Coolant:Kev siv cov dej txias txias yog qhov pom zoo heev. Nws ua haujlwm rau ntau lub hom phiaj: nws ua kom txias rau qhov chaw ua haujlwm thiab cov cuab yeej, lubricates qhov chaw txiav kom tiv thaiv cov khoom adhesion, thiab tshem tawm cov chips. Rau qee qhov kev ua haujlwm siab - nrawm nrawm, siv lub tshuab cua tshuab nrog cov roj pos huab tuaj yeem ua tau zoo.
Txheej txheem kev txiav txim siab rau Kev Pov Hwm Zoo
Kev ua tiav zoo ib yam, siab - qhov zoo yuav tsum tau saib xyuas tag nrho cov txheej txheem.
- Chip Control:Kev tsim chip tsim nyog thiab kev khiav tawm yog qhov tseem ceeb. Ntev, stringy chips tuaj yeem qhwv ib ncig ntawm qhov chaw ua haujlwm lossis lub cuab yeej, ua rau muaj kev nyab xeeb thiab ua rau muaj kev puas tsuaj. Cov cuab yeej geometry, chip breakers, thiab siab -siab coolant yog siv los tsim "C" zoo li tus chips.
- Nto tiav:Kev ua tiav zoo tshaj plaws yog ua tiav los ntawm kev sib xyaw ua ke ntawm cov cuab yeej ntse, kev txiav siab ceev, tus nqi pub tsawg, lub qhov ntswg qhov ntswg zoo, thiab daim ntawv thov ua kom zoo. Kev vibration yuav tsum raug txo kom tsis txhob muaj kev sib tham.
- Dimensional raug:Lub rigidity ntawm CNC tshuab dhos, thermal stability ntawm cov txheej txheem, thiab precision ntawm lub cuab tam txoj kev programming yog cov thawj yam tseem ceeb tswj qhov ntev ntev, uas yuav tuav nyob rau hauv ± 0.012 hli (± 0.0005 nti) los yog nruj dua rau cov yam ntxwv tseem ceeb.
Xaus
Kev vam meej ntawm precision txhuas Cheebtsam ntawm CNC tig hinges ntawm ib tug systematic mus kom ze. Nws yuav tsum muaj kev sib koom ua ke ntawm qhov raug txhuas alloy, cov cuab yeej siv siab tshaj (xws li PCD lossis ntse carbide), kev ua kom zoo dua qub, thiab lub tswv yim ua kom txias txias. Kev ua raws li cov qauv kev tshaj lij no ua kom muaj txiaj ntsig zoo, tshwj xeeb ntawm qhov zoo, thiab tus nqi - ua tau zoo rau kev thov kev lag luam. Cov txheej txheem ntawmCNC tig aluminium qhov chawtseem yog lub hauv paus ntawm kev tsim khoom niaj hnub no, ua rau kev tsim cov txheej txheem nyuaj, siab - kam rau ua.