Hom ntawm cov ntaub ntawv sib xyaw rau machining chaw
Cov ntaub ntawv sib xyaw tuaj yeem muab faib ua hlau rau cov khoom siv hlau sib xyaw, cov khoom tsis yog hlau rau cov khoom siv hlau sib xyaw, thiab cov khoom tsis yog hlau rau cov khoom tsis yog hlau sib xyaw raws li lawv cov muaj pes tsawg leeg. Raws li nws cov yam ntxwv ntawm cov qauv, nws tuaj yeem muab faib ua:
1. Cov khoom siv fiber ntau. Txhua yam ntawm fiber reinforcements yog compounded nyob rau hauv cov khoom matrix. Xws li fiber reinforced yas, fiber reinforced hlau, thiab lwm yam.
2. Sandwich composites. Nws yog tsim los ntawm cov ntaub ntawv nto thiab cov ntaub ntawv tseem ceeb nrog cov khoom sib txawv. Feem ntau, cov khoom siv saum npoo yog muaj zog thiab nyias; Cov khoom siv tseem ceeb yog lub teeb thiab tsis muaj zog, tab sis nws muaj qee qhov nruj thiab tuab. Nws muab faib ua khoom interlayer thiab honeycomb interlayer.
3. Fine grained composites. Cov khoom nyuaj yog sib npaug faib rau hauv matrix, xws li dispersion reinforced alloy, cermet, thiab lwm yam.
4. Hybrid composites. Nws yog tsim los ntawm ob lossis ntau dua cov ntaub ntawv txhawb nqa sib xyaw hauv ib qho khoom siv matrix. Qhov cuam tshuam lub zog, qaug zog lub zog thiab puas ntsoog toughness ntawm cov composite yog ho txhim khu kev qha piv nrog rau cov zoo tib yam ib theem reinforced composites, thiab nws muaj tshwj xeeb thermal expansion zog. Nws muab faib ua intralayer hybrid, interlayer hybrid, sandwich hybrid, intralayer / interlayer hybrid thiab super hybrid composites.
Qee qhov teeb meem uas yuav tsum tau them nyiaj rau hauv precision machining ntawm cov ntaub ntawv sib xyaw
1. Lub zog interlaminar ntawm carbon fiber ntau yog tsawg, thiab nws yooj yim rau delaminate nyob rau hauv qhov kev txiav txim ntawm txiav quab yuam. Yog li ntawd, lub axial quab yuam yuav tsum tau txo thaum drilling los yog trimming. Lub drilling yuav tsum muaj kev sib hloov ceev thiab me me pub. Kev sib hloov ceev ntawm qhov chaw machining feem ntau yog 3000-6000r/min, thiab tus nqi pub nce mus txog 0.01-0.04mm/r. Lub laum me ntsis yuav tsum yog peb ntse ob edged los yog ob ntse ob edged. Cov hniav ntse tuaj yeem txiav tawm cov txheej txheem carbon fiber ua ntej, thiab ob lub npoo ua lub luag haujlwm hauv kev kho lub qhov phab ntsa. Lub pob zeb diamond inlaid laum me ntsis muaj qhov ua tau zoo thiab hnav tsis kam. Qhov drilling ntawm cov khoom sib xyaw thiab titanium alloy interlayer yog ib qho teeb meem nyuaj. Feem ntau, ib qho tseem ceeb cemented carbide laum yog siv los laum raws li kev txiav tsis tau ntawm titanium alloy. Laum los ntawm titanium alloy sab kom txog thaum lub drilling tiav. Lubricant yog ntxiv thaum lub sij hawm drilling kom alleviate cov khoom sib xyaw hlawv. Lub tuam txhab Boeing tau tsim tshwj xeeb tsim PCD ua ke cov khoom rau drilling interlayers.
2. Cov nyhuv txiav ntawm peb hom tshiab tshwj xeeb milling cutters rau machining ib qho cemented carbide composites zoo dua. Lawv txhua tus muaj qee qhov nta: siab nruj, lub kaum sab xis me me, txawm tias 0 degree . Qhov tshwj xeeb tsim herringbone hniav tuaj yeem txo cov axial txiav quab yuam ntawm machining chaw thiab txo delamination. Lawv machining efficiency thiab cov nyhuv yog zoo heev.
3. Composite chips yog hmoov, uas yog teeb meem rau tib neeg noj qab haus huv. Lub tshuab nqus tsev muaj zog siab yuav tsum tau siv rau kev sau cov plua plav. Cov dej txias kuj tuaj yeem txo cov pa phem.
4. Carbon fiber composite machining Cheebtsam yog feem ntau loj nyob rau hauv loj, complex nyob rau hauv cov duab thiab cov qauv, siab hardness thiab lub zog, thiab yog ib qho nyuaj rau tshuab cov ntaub ntawv. Nyob rau hauv cov txheej txheem txiav, txiav quab yuam loj, txiav cov cua sov tsis yooj yim kom dhau tawm, cov resin yuav hlawv los yog muag thaum nws loj heev, thiab cov cuab yeej hnav hnyav. Yog li ntawd, cov cuab yeej yog tus yuam sij rau kev ua cov pa roj carbon fiber ntau, thiab nws cov txheej txheem txiav yog ze rau kev sib tsoo es tsis yog milling. Yog li ntawd, txoj kab txiav ceev ntawm machining chaw feem ntau yog ntau dua 500m / min, thiab kev kub ceev me me pub tswv yim yog saws. Cov cuab yeej txiav feem ntau yog cov khoom carbide knurled milling cutter, electroplated pob zeb diamond grain sib tsoo log, pob zeb diamond inlaid milling cutter thiab tooj liab raws li pob zeb diamond saw hniav.