Taw qhia
Milling yog txheej txheem machining feem ntau siv hauv kev tsim khoom lag luam los txiav thiab tsim ntau yam khoom. Cov txheej txheem milling suav nrog tig lub cuab yeej txiav, hu ua lub tshuab txiav milling, nrog rau ib lossis ntau lub axes kom tshem tawm cov khoom ntawm lub workpiece. Cov npoo ntawm cov milling cutter yog qhov tseem ceeb tshaj plaws ntawm cov cuab yeej thaum lawv ua qhov tseeb txiav. Hauv tsab xov xwm no, peb yuav tham txog dab tsi lub milling txiav npoo hu ua thiab lawv hom, duab, thiab daim ntawv thov.
Milling Txiav Ntug Hom
Milling cutters tuaj yeem muab faib ua ntau hom raws li lawv cov npoo. Feem ntau hom milling cutters raws li lawv cov npoo yog raws li hauv qab no:
1. Khoom Carbide
Khoom carbide cutters yog tsim los ntawm ib qho ntawm cov khoom siv carbide. Cov npoo txiav yog tsim los ntawm kev sib tsoo cov khoom siv carbide rau hauv cov duab xav tau. Cov khoom carbide cutters muaj zog heev thiab tuaj yeem txiav los ntawm cov ntaub ntawv nyuaj xws li steel thiab titanium. Lawv yog cov zoo tagnrho rau high-ceev milling kev khiav hauj lwm thiab muab zoo heev nto finishes.
2. High-Speed Steel (HSS)
High-speed steel cutters yog tsim los ntawm cov khoom siv high-speed steel. Cov npoo txiav yog tsim los ntawm kev sib tsoo cov khoom siv hlau rau hauv cov duab xav tau. HSS cutters muaj ntau yam thiab tuaj yeem txiav los ntawm ntau yam ntaub ntawv, suav nrog txhuas, tooj dag, thiab cam khwb cia hlau. Lawv yog cov feem ntau hom milling cutter siv nyob rau hauv manufacturing.
3. Cobalt hlau
Cobalt steel cutters yog tsim los ntawm kev ntxiv cobalt rau cov khoom siv high-speed steel. Cov npoo txiav yog tsim los ntawm kev sib tsoo cov khoom siv cobalt rau hauv cov duab uas xav tau. Cobalt steel cutters yog qhov zoo tagnrho rau kev txiav cov ntaub ntawv nyuaj xws li cov hlau tsis muaj steel thiab cov hlau tawv tawv.
4. Pob zeb diamond-coated
Pob zeb diamond-coated cutters muaj cov pob zeb diamond txheej siv rau saum npoo ntawm cov cuab yeej txiav. Lub pob zeb diamond txheej muab tshwj xeeb hardness thiab durability, cia lawv txiav los ntawm cov ntaub ntawv uas lwm yam cutters tsis tau. Cov cutters no feem ntau siv nyob rau hauv aerospace thiab kev kho mob kev lag luam.
Milling Txiav Edges Shapes
Cov duab ntawm milling cutter's txiav ntug txiav txim seb hom kev txiav nws tuaj yeem ua. Feem ntau cov duab ntawm milling txiav ntug yog:
1. Helical
Helical txiav ntug muaj ib tug kauv zoo uas qhwv ib ncig ntawm lub milling cutter. Cov cutters no yog qhov zoo tagnrho rau kev txiav ntawm qhov chaw ntxhab thiab muaj tus nqi tshem tawm ntau dua piv rau lwm cov duab.
2. Pob-Nce
Pob-qhov ntswg txiav npoo muaj cov duab sib npaug uas muaj txiaj ntsig zoo rau kev tsim cov contours thiab 3D duab ntawm lub workpiece. Lawv feem ntau siv rau kev ua haujlwm tiav thiab tshwj xeeb tshaj yog muaj txiaj ntsig zoo thaum ua cov npoo nkhaus.
3. Lub kaum sab xis
Corner-rounding txiav npoo muaj ib lub vojvoog ntawm lub ces kaum uas tso cai rau lawv los tsim cov fillets ntawm lub workpiece. Cov cutters no muaj txiaj ntsig zoo rau kev ua cov fab sib npaug thiab txhim kho tag nrho cov duab ntawm lub workpiece.
4. Lub ntsej muag
Lub ntsej muag txiav cov npoo yog tiaj tus thiab yog siv los ua cov txiav hauv qab. Cov cutters no zoo tagnrho rau kev ua haujlwm roughing thiab tshem tawm cov khoom loj heev sai.
5. Chamfer
Chamfer txiav npoo muaj lub kaum sab xis uas tso cai rau lawv los tsim ib qho beveled ntug ntawm workpiece. Cov cutters no feem ntau siv hauv kev ua haujlwm ntoo thiab hlau ua haujlwm.
Kev siv milling txiav ntug
Lub milling txiav npoo tuaj yeem siv rau ntau yam kev siv. Nov yog qee qhov piv txwv:
1. Roughing
Kev ua haujlwm roughing suav nrog tshem tawm cov khoom loj ntawm lub workpiece sai sai. Rau hom kev lag luam no, cutters nrog loj helical txiav npoo los yog lub ntsej muag txiav npoo yog qhov zoo tagnrho.
2. Ua tiav
Kev ua tiav tiav suav nrog smoothing nto ntawm lub workpiece tom qab kev ua haujlwm roughing. Rau hom kev ua haujlwm no, cutters nrog pob-qhov ntswg txiav npoo los yog kaum-rounding txiav npoo yog qhov zoo tagnrho.
3. Slotting
Kev ua haujlwm ntawm qhov chaw ua haujlwm suav nrog kev txiav nqaim ntawm qhov chaw ntawm lub workpiece. Rau hom kev ua haujlwm no, siv cov cutters nrog cov npoo ncaj.
4. Drilling
Drilling ua haujlwm suav nrog ua qhov hauv qhov workpiece. Rau hom kev ua haujlwm no, cov cutters nrog cov npoo txiav, tseem hu ua kev xyaum, yog siv.
5. Contouring
Kev ua haujlwm contouring suav nrog tsim 3D duab ntawm qhov chaw ntawm lub workpiece. Rau hom kev ua haujlwm no, cutters nrog pob-qhov ntswg txiav npoo los yog kaum-rounding txiav npoo yog qhov zoo tagnrho.
Xaus
Hauv kev xaus, cov npoo ntawm milling cutters yog qhov tseem ceeb tshaj plaws ntawm cov cuab yeej thaum lawv ua qhov tseeb txiav. Cov npoo txiav tuaj yeem muab faib ua ntau hom raws li lawv cov khoom thiab cov duab. Cov duab ntawm cov ntug txiav txiav txim seb hom kev txiav nws tuaj yeem ua tau, thiab daim ntawv thov ntawm milling txiav cov npoo ntau ntawm roughing mus rau contouring. Kev nkag siab txog ntau hom thiab cov duab ntawm milling txiav cov npoo yog qhov tseem ceeb rau kev xaiv lub tshuab txiav kom raug rau txoj haujlwm.