Dab tsi ua rau deformation ntawm aluminium alloy plhaub
Lub machining deformation ntawm aluminium alloy plhaub, tshwj xeeb tshaj yog nyias-walled plhaub, yog ib qho teeb meem kev lag luam. Yog li ntawd, peb cov nroj tsuag machining yuav tsum txheeb xyuas qhov ua rau deformation thiab siv cov kev ntsuas coj los tiv thaiv nws.
1. Cov khoom siv qib thiab cov txheej txheem complexity ntawm aluminium plhaub yuav cuam tshuam rau deformation ntawm lub plhaub
Lub deformation ntawm aluminium plhaub machined los ntawm CNC muaj feem xyuam rau cov complexity ntawm cov duab, nam piv thiab phab ntsa thickness, thiab yog ncaj qha cuam tshuam rau lub rigidity thiab stability ntawm cov khoom. Yog li ntawd, thaum tsim lub plhaub aluminium ntawm cov khoom, qhov cuam tshuam ntawm cov yam tseem ceeb ntawm qhov deformation ntawm lub workpiece yuav tsum raug txo kom tsawg.
Hauv particular, cov qauv yuav tsum tsim nyog nyob rau hauv kev ua thiab customization ntawm loj feem shells. Ua ntej ua tiav, lub hardness thiab porosity ntawm aluminium alloy blanks yuav tsum nruj me ntsis tswj kom ntseeg tau tias qhov zoo ntawm blanks thiab txo cov deformation ntawm workpieces tshwm sim los ntawm no.
2. Deformation ntawm aluminium plhaub tshwm sim los ntawm machining thiab clamping ntawm machining chaw
Thaum lub plhaub txhuas ua thiab cov khoom siv khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob Yog li ntawd, lub clamping nto thiab lub zog bearing nto yuav tsum zoo ib yam li qhov ua tau kom lub clamping quab yuam ua rau ntawm lub workpiece.
Thaum clamping quab yuam nyob rau hauv ntau cov lus qhia ua rau ntawm lub workpiece, qhov sib lawv liag ntawm clamping quab yuam yuav tsum tau txiav txim siab. Lub clamping quab yuam yuav tsum tau siv ua ntej ua kom lub workpiece sib cuag nrog kev txhawb nqa, uas tsis yooj yim rau loj heev. Lub clamping quab yuam, uas yog tsuas yog siv los sib npaug ntawm lub zog txiav, yuav tsum tau siv rau hauv cov txheej txheem tom ntej.
3. Deformation tshwm sim los ntawm kev ua tsis tau ntawm txhuas plhaub
Thaum lub sij hawm txiav cov txheej txheem ntawm machining chaw tshuab cuab yeej, lub plhaub yog cuam tshuam los ntawm kev txiav quab yuam, uas ua rau elastic deformation coj mus rau qhov kev taw qhia ntawm lub zog, uas feem ntau hu ua machining kev lag luam. Nyob rau hauv cov nqe lus ntawm kev ua tsis tau thiab xaiv cov cuab yeej, cov kev ntsuas yuav tsum tau coj mus daws nrog no deformation.
Cov cuab yeej ntse yuav tsum tau ua kom tiav. Ntawm qhov tod tes, nws tuaj yeem txo qhov kev tawm tsam tsim los ntawm kev sib txhuam ntawm lub cuab yeej thiab cov khoom ua haujlwm, thiab ntawm qhov tod tes, nws tuaj yeem txhim kho cov cua sov dissipation nyhuv thaum lub cuab yeej txiav lub workpiece. Yuav kom txo tau qhov seem sab hauv kev nyuaj siab ntawm lub workpiece.
Thaum milling qhov loj saum npoo ntawm nyias-walled casing qhov chaw, ib qho ntug milling txoj kev feem ntau yog siv. Lub cutter tsis tau txais qhov loj dua lub ntsiab deflection lub kaum sab xis thiab loj rake lub kaum sab xis kom txo tau qhov txiav tsis kam. Cov cuab yeej siv dav hauv kev tsim khoom vim nws lub teeb txiav, khiav ceev thiab txo deformation ntawm nyias-walled qhov chaw.
Nyob rau hauv kev cai machining txheej txheem ntawm nyias-walled aluminium plhaub, lub cuab yeej tsim nyog lub kaum ntse ntse yog qhov tseem ceeb rau qhov loj ntawm kev txiav quab yuam, thermal deformation generated nyob rau hauv cov txheej txheem machining thiab micro zoo ntawm workpiece nto. Qhov luaj li cas ntawm lub kaum sab xis ntawm lub cuab yeej txiav txim siab txiav deformation ntawm lub cuab yeej thiab lub sharpness ntawm lub kaum sab xis rake.
Loj rake lub kaum sab xis txo qhov kev txiav deformation thiab kev sib txhuam. Txawm li cas los xij, yog tias lub kaum sab xis loj dhau, lub cuab yeej lub kaum sab xis yuav raug txo, lub cuab yeej lub zog yuav tsis muaj zog, lub cuab yeej cua sov dissipation yuav tsis zoo, thiab hnav yuav nrawm dua. Yog li ntawd, thaum machining aluminium alloy nyias-walled kab noj hniav, cov cuab yeej ceev ceev thiab cov cuab yeej cemented carbide feem ntau yog siv. Kev xaiv kom raug ntawm cov cuab yeej txiav yog tus yuam sij los cuam tshuam nrog deformation ntawm aluminium plhaub workpiece.
Nyob rau hauv machining, lub tshav kub generated los ntawm kev sib txhuam ntawm lub CNC tshuab cuab tam thiab lub workpiece yuav deform lub workpiece, yog li ntawd high-ceev txiav yog feem ntau siv. Nyob rau hauv kev kub ceev machining, vim hais tias lub sij hawm tshem tawm nti yog luv luv, feem ntau ntawm cov cua kub txiav yog tshem tawm los ntawm nti, txo cov thermal deformation ntawm workpiece; Secondly, thaum ua hauj lwm nyob rau hauv lub high-ceev machining chaw, qhov txo ntawm softening ib feem ntawm cov txheej txheej txheej kuj yuav txo tau lub deformation ntawm aluminium plhaub ua, uas yog tsim nyog los xyuas kom meej tias lub plhaub muaj qhov loj, zoo thiab loj.
Tsis tas li ntawd, cov kua txiav ntawm CNC tshuab cuab yeej machining chaw yog tsuas yog siv los txo kev sib txhuam thiab txiav kub thaum lub sij hawm txiav. Kev xaiv tsim nyog ntawm cov kua txiav ua lub luag haujlwm tseem ceeb hauv kev txhim kho cov cuab yeej siv tau ntev, qhov zoo ntawm qhov chaw thiab kev ua haujlwm raug. Yog li ntawd, txhawm rau tiv thaiv qhov deformation ntawm qhov chaw hauv cov txheej txheem machining, nws yog ib qho tsim nyog yuav tsum siv cov kua tshwj xeeb txiav nrog qhov tsim nyog.
Hauv CNC machining, kev siv cov txheej txheem txiav tsim nyog yog qhov txuas tseem ceeb los xyuas kom meej qhov tseeb ntawm qhov chaw. Thaum machining nyias-walled aluminium shells nrog siab precision yuav tsum, feem ntau symmetrical machining yog siv los sib npaug qhov kev nyuaj siab generated nyob rau hauv lub opposite sab kom ua tau ib tug kuj ruaj khov lub xeev, thiab machined workpiece yuav tiaj tus li sai tau.
Txawm li cas los xij, thaum txiav ntau siv nyob rau hauv ib qho txheej txheem, lub workpiece yuav deformed vim qhov tsis sib xws ntawm tensile stress thiab compressive stress. Lub deformation ntawm nyias-walled aluminium plhaub nyob rau hauv machining chaw yog ntau yam. Qee yam xws li lub zog clamping thaum clamping lub workpiece, txiav quab yuam thaum txiav lub workpiece