Hauv tsab xov xwm no, peb yuav saib ntau yam ntawm cov thev naus laus zis thiab cov khoom siv los tsim cov khoom siv rau kev tsim khoom, lawv cov txiaj ntsig, yam xav txog, thiab lwm yam.
Taw qhia
Kev tsim cov khoom siv rau kev tsim khoom - tseem hu ua qhov kawg siv - yog hais txog cov txheej txheem ntawm kev siv cov khoom siv raw los tsim ib feem uas tsim thiab tsim los siv rau hauv cov khoom kawg, tsis zoo li tus qauv lossis qauv.Mus saib peb phau ntawv qhia rautsim thawj prototypeskom paub ntau ntxiv txog qhov no.
Txhawm rau kom ntseeg tau tias koj cov khoom ua haujlwm hauv ib puag ncig tiag tiag - xws li cov khoom siv tshuab, cov khoom siv tsheb, cov khoom siv, lossis lwm lub hom phiaj ua haujlwm - kev tsim khoom yuav tsum tau ua nrog qhov no hauv siab.Txhawm rau kom ua tiav thiab ua haujlwm zoo rau kev tsim khoom, koj yuav tsum xav txog cov ntaub ntawv, tsim, thiab cov txheej txheem tsim khoom kom ntseeg tau tias koj ua tau raws li qhov tsim nyog ua haujlwm, kev nyab xeeb, thiab cov kev xav tau zoo.
Xaiv cov khoom siv rau kev tsim khoom
Cov khoom siv dav dav rau cov khoom tsim muaj xws li hlau xws li hlau lossis txhuas, yas xws li ABS, polycarbonate, thiab nylon, cov khoom sib xyaw xws li carbon fiber thiab fiberglass thiab qee cov ceramics.
Cov khoom siv zoo rau koj qhov kawg siv yuav nyob ntawm seb qhov yuav tsum tau ua ntawm daim ntawv thov, nrog rau nws cov nqi thiab qhov muaj.Nov yog ob peb yam khoom uas yuav tsum tau xav txog thaum xaiv cov khoom siv los tsim cov khoom rau kev tsim khoom:
❖ Lub zog.Cov ntaub ntawv yuav tsum muaj zog txaus los tiv thaiv lub zog uas ib feem yuav raug nthuav tawm thaum siv.Cov hlau yog cov qauv zoo ntawm cov ntaub ntawv muaj zog.
❖ Durability.Cov ntaub ntawv yuav tsum muaj peev xwm tiv taus hnav thiab tsim kua muag thaum lub sijhawm tsis muaj degrading lossis tawg.Composites paub txog ob qho tib si durability thiab lub zog.
❖ Flexibility.Nyob ntawm daim ntawv thov ntawm qhov kawg, cov khoom siv yuav tsum tau hloov pauv kom haum rau kev txav los yog deformation.Cov yas xws li polycarbonate thiab nylon paub txog lawv qhov yooj.
❖ Kub tiv taus.Yog hais tias ib feem yuav raug kub siab, piv txwv li, cov khoom yuav tsum muaj peev xwm tiv taus cua sov yam tsis muaj melting los yog deforming.Hlau, ABS, thiab ceramics yog cov piv txwv ntawm cov ntaub ntawv uas muaj qhov kub thiab txias tsis kam.
Manufacturing txoj kev rau qhov chaw rau ntau lawm
Plaub hom kev tsim khoom yog siv los tsim qhov chaw rau kev tsim khoom:
❖ Subtractive manufacturing
❖ Additive manufacturing
❖ Hlau txoj kev
❖ Casting
Subtractive manufacturing
Subtractive manufacturing - tseem hu ua kev tsim khoom ib txwm muaj - suav nrog kev tshem tawm cov khoom los ntawm cov khoom loj dua kom txog rau thaum cov duab xav tau tiav.Subtractive manufacturing feem ntau sai dua li kev tsim khoom ntxiv, ua rau nws tsim nyog rau cov khoom ntim ntau lawm.Txawm li cas los xij, nws tuaj yeem kim dua, tshwj xeeb tshaj yog thaum xav txog cov cuab yeej thiab cov nqi teeb tsa, thiab feem ntau tsim cov khib nyiab ntau dua.
Cov hom kev rho tawm raug suav nrog:
❖ Computer numerical control (CNC) milling.Ib homCNC machining, CNC milling suav nrog kev siv cov cuab yeej txiav kom tshem tawm cov khoom los ntawm cov khoom thaiv los tsim ib feem tiav.Nws muaj peev xwm tsim cov khoom nrog cov qib siab ntawm qhov tseeb thiab qhov tseeb hauv cov ntaub ntawv xws li hlau, yas, thiab cov khoom sib xyaw.
❖ CNC tig.Kuj yog hom CNC machining, CNC tig siv cov cuab yeej txiav kom tshem tawm cov khoom los ntawm cov khoom sib hloov.Nws feem ntau yog siv los tsim cov khoom uas yog cylindrical, xws li li qub los yog shafts.
❖ Sheet hlau fabrication.Hauvsheet hlau fabrication, ib daim ntawv tiaj tus hlau yog txiav los yog tsim raws li daim ntawv qhia, feem ntau yog DXF lossis CAD cov ntaub ntawv.
Additive manufacturing
Additive manufacturing - tseem hu ua 3D luam ntawv - hais txog cov txheej txheem uas cov khoom siv ntxiv rau nws tus kheej los tsim ib feem.Nws muaj peev xwm tsim tau cov duab zoo heev uas yuav tsis tuaj yeem ua tsis tau nrog cov txheej txheem tsim khoom (subtractive), tsim cov khoom pov tseg tsawg dua, thiab tuaj yeem ua tau sai dua thiab tsis tshua kim, tshwj xeeb tshaj yog thaum tsim cov khoom me me ntawm qhov nyuaj.Kev tsim cov khoom yooj yim, txawm li cas los xij, tuaj yeem ua qeeb dua li kev tsim tawm, thiab ntau yam khoom siv feem ntau me dua.
Ntau hom kev tsim khoom additive suav nrog:
❖ Stereolithography (SLA).Kuj tseem hu ua resin 3D luam ntawv, SLA siv UV lasers ua lub teeb pom kev zoo los xaiv kho cov polymer resin thiab tsim ib feem tiav.
❖ Fused Deposition Modeling (FDM).Kuj tseem hu ua fused filament fabrication (FFF),FDMtsim cov txheej txheej los ntawm txheej, xaiv cov khoom siv melted nyob rau hauv ib txoj kev predetermined.Nws siv cov thermoplastic polymers uas tuaj hauv filaments los ua cov khoom siv lub cev kawg.
❖ Xaiv Laser Sintering (SLS).HauvSLS 3D luam ntawv, ib lub laser xaiv sinters cov khoom ntawm ib tug polymer hmoov, fusing lawv ua ke thiab tsim ib feem, txheej los ntawm txheej.
❖ Multi Jet Fusion (MJF).Raws li HP tus tswv 3D tshuab luam ntawv,MJFtuaj yeem ua tau raws li qhov xav tau thiab xa sai sai nrog lub zog tensile siab, kev daws teeb meem zoo, thiab cov cuab yeej kho kom zoo
Hlau sib sau
Hauv kev tsim cov hlau, hlau yog zoo li tus xav tau los ntawm kev siv lub zog los ntawm kev siv tshuab lossis thermal.Cov txheej txheem tuaj yeem yog kub lossis txias, nyob ntawm cov hlau thiab cov duab uas xav tau.Cov khoom tsim nrog hlau sib sau feem ntau muaj lub zog zoo thiab ua haujlwm ntev.Tsis tas li ntawd, feem ntau muaj tsawg cov khoom pov tseg tsim dua li nrog rau lwm hom kev tsim khoom.
Hom kev sib sau hlau feem ntau muaj xws li:
❖ Forging.Hlau yog rhuab, ces zoo li tus los ntawm kev thov compressive quab yuam rau nws.
❖ Extrusion.Hlau raug yuam los ntawm kev tuag los tsim ib qho kev xav tau lossis qhov profile.
❖ Kev kos duab.Hlau yog rub los ntawm kev tuag los tsim ib qho kev xav tau lossis qhov profile.
❖ Khoov.Hlau yog khoov rau ib qho kev xav tau los ntawm kev siv dag zog.
Casting
Casting yog txheej txheem tsim khoom uas cov khoom siv ua kua, xws li hlau, yas, lossis ceramic, yog nchuav rau hauv pwm thiab tso cai rau kom khov rau hauv cov duab uas xav tau.Nws yog siv los tsim qhov chaw uas muaj cov qib siab ntawm qhov raug thiab rov ua dua.Casting kuj yog ib qho kev xaiv raug nqi hauv kev tsim khoom loj.
Feem ntau hom casting muaj xws li:
❖ Txhaj tshuaj molding.Kev tsim khoom siv los tsim cov khoom los ntawmtxhaj tshuaj moltenkhoom - feem ntau yas - rau hauv pwm.Tom qab ntawd cov khoom yog txias thiab solidified, thiab cov tiav lawm yog ejected los ntawm pwm.
❖ Tuag casting.Nyob rau hauv tuag casting, molten hlau yog yuam mus rau hauv pwm kab noj hniav nyob rau hauv siab siab.Tuag casting yog siv los tsim cov duab nyuaj nrog cov neeg siab thiab rov ua dua.
Tsim rau manufacturability thiab qhov chaw rau ntau lawm
Tsim rau kev tsim khoom lossis kev tsim khoom (DFM) yog hais txog kev tsim vaj tsev ntawm kev tsim ib feem lossis cov cuab yeej nrog kev tsim-thawj tsom, ua kom cov khoom kawg uas ua tau zoo dua thiab pheej yig dua los tsim.Hubs 'tsis siv neeg DFM tsom xam ua rau engineers thiab designers tsim, iterate, yooj yim, thiab optimize qhov chaw ua ntej lawv tsim, ua rau tag nrho cov txheej txheem tsim ntau npaum.Los ntawm kev tsim cov khoom uas yooj yim dua rau kev tsim khoom, lub sijhawm tsim khoom thiab cov nqi yuav raug txo kom tsawg, raws li tuaj yeem ua rau muaj kev pheej hmoo ntawm kev ua yuam kev thiab tsis zoo hauv qhov kawg.
Cov lus qhia rau kev siv DFM tsom xam kom txo tus nqi ntawm koj qhov kev tsim khoom
❖ Txo cov khoom seem.Feem ntau, cov khoom tsawg dua ib feem muaj, qhov qis dua lub sijhawm sib dhos, kev pheej hmoo lossis kev ua yuam kev, thiab tag nrho cov nqi.
❖ Muaj.Cov khoom uas tuaj yeem tsim tau nrog cov txheej txheem tsim khoom thiab cov cuab yeej siv - thiab cov qauv tsim qauv yooj yim - yooj yim dua thiab pheej yig dua los tsim.
❖ Cov khoom siv thiab cov khoom siv.Cov khoom siv uas siv cov ntaub ntawv txheem thiab cov khoom siv tuaj yeem pab txo cov nqi, ua kom yooj yim rau kev tswj cov saw hlau, thiab xyuas kom meej tias cov khoom hloov pauv tau yooj yim.
❖ Kev taw qhia ib feem.Xav txog kev taw qhia ntawm qhov chaw thaum lub sijhawm tsim khoom.Qhov no tuaj yeem pab txo qis qhov xav tau kev txhawb nqa lossis lwm yam ntxiv uas tuaj yeem ua rau lub sijhawm tsim khoom thiab tus nqi tag nrho.
❖ Zam tsis txhob muaj qhov cuam tshuam.Undercuts yog cov yam ntxwv uas tiv thaiv ib feem los ntawm kev tshem tawm yooj yim los ntawm pwm lossis khoom siv.Kev zam cov undercuts tuaj yeem pab txo cov sij hawm tsim khoom thiab cov nqi, thiab txhim kho tag nrho qhov zoo ntawm qhov kawg.
Tus nqi ntawm cov khoom siv rau kev tsim khoom
Striking qhov sib npaug ntawm qhov zoo thiab tus nqi yog qhov tseem ceeb hauv kev tsim cov khoom siv rau kev tsim khoom.Nov yog ob peb yam ntsig txog tus nqi los xav txog:
❖ Cov ntaub ntawv.Tus nqi ntawm cov khoom siv raw siv hauv cov txheej txheem tsim khoom yog nyob ntawm hom khoom siv, nws muaj, thiab qhov xav tau ntau.
❖ Tooling.Xws li cov nqi ntawm cov tshuab, pwm, thiab lwm yam cuab yeej tshwj xeeb uas siv hauv kev tsim khoom.
❖ Ntau lawm ntim.Feem ntau, qhov ntau dua ntawm cov khoom koj tsim, tus nqi qis dua ib feem.Qhov no yog qhov tseeb tshwj xeeb ntawmtxhaj tshuaj molding, uas muaj kev lag luam tseem ceeb ntawm cov nplai rau kev txiav txim loj dua.
❖ Lub sijhawm ua haujlwm.Cov khoom tsim tau sai sai rau lub sijhawm ua haujlwm tseem ceeb feem ntau ua rau tus nqi siab dua li cov khoom siv sijhawm ntev dua.
Tau txais ib daim ntawv qhia tam simlos sib piv cov nqi thiab cov sij hawm ua rau koj qhov chaw tsim khoom.
Qhov chaw ntawm tsab xov xwm:https://www.hubs.com/knowledge-hub/?topic=CNC+machining
Post lub sij hawm: Apr-14-2023