Tej yam cuam tshuam rau Machining ntawm Ultra-Precision Cheebtsam
Ultra- precision machining thev naus laus zis tau tshaj tawm hauv xyoo 1960. Nws yog ib qho tseem ceeb ntawm kev txhim kho kev ua tau zoo, kev ua tau zoo, kev pab lub neej, thiab kev ntseeg siab ntawm cov khoom siv hluav taws xob, nrog rau kev txuag hluav taws xob. Ultra- precision machining yog hais txog kev siv tshuab machining nrog kev ua haujlwm yuam kev tsawg dua 0.1 µm thiab qhov roughness ntawm qhov tsawg dua Ra 0.025 µm. Nws tseem hu ua sub-micron-theem machining. Qib ntawm ultra{11}} precision machining thev naus laus zis yog ib qho ntawm cov cim tseem ceeb ntawm qib kev lag luam hauv lub teb chaws.
Ntxiv nrog rau qhov hloov pauv ntawm cov khoom siv hydraulic thiab pneumatic, qhov chaw ua haujlwm muaj qhov cuam tshuam loj rau kev ua haujlwm zoo. Yog li ntawd, qhov chaw ua haujlwm yog ib qho tsim nyog los xyuas kom meej machining zoo. Qhov chaw ua haujlwm feem ntau suav nrog cov kev xav tau ntawm qhov kub thiab txias, huv si, thiab kev sib cais ntawm kev vibration. Cov kev hloov pauv ntawm qhov ntsuas kub ib puag ncig muaj qhov tshwj xeeb pom zoo rau cov cuab yeej siv tshuab raug. Thermal yam, suav nrog kev hloov pauv ntawm qhov kub thiab txias, suav txog (40-70)% ntawm tag nrho cov machining yuam kev. Lub ingress ntawm plua plav tuaj yeem ua rau khawb ntawm qhov chaw ua haujlwm, yog li cuam tshuam rau nws qhov zoo. Yog tias kev vibrations tshwm sim thaum lub sij hawm machining txheej txheem, striations los yog wavy qauv yuav tshwm sim nyob rau hauv machined nto ntawm lub workpiece, txo nws cov nto tiav.
Raws li qhov yuav tsum tau ua rau ultra- precision machining nce, qhov xav tau ntawm qhov chaw machining tau nruj dua. Qhov kev tshuaj xyuas no tsom mus rau peb yam tseem ceeb cuam tshuam rau qhov tseeb ntawm ultra- precision machining: qhov hloov pauv ntawm huab cua hloov siab, hloov pauv ntawm qhov kub thiab txias, thiab kev co sab nraud thiab sab hauv. Txawm li cas los xij, cov xwm txheej cuam tshuam rau qhov tseeb ntawm ultra- precision machining yog ntau yam. Txhawm rau txhim kho qhov tseeb ntawm ultra- precision machining, nws tsis yog tsuas yog yuav tsum nkag siab txog cov kev cuam tshuam no, tab sis kuj tseem yuav tsum paub cov kev daws teeb meem.
