Yus li cas los qhia kom muaj kev tswj hwm rau cov nqi ntawm kev tsim kho CNC?

Map Cost Drivers to Your CNC Machining Line Configuration

Distinguish capital (CAPEX) vs. operational (OPEX) costs by machine type, automation level, and lifecycle phase

Thaum kawm qhia txog kev tshuaj ntsuab rau kev siv CNC, nws yog qhov tseem ceeb kom ua qhov qhia ntawm qhov twg yog kev siv tshuaj (CAPEX) thiab qhov twg yog kev siv tshuaj hauv qhov sib xyaw (OPEX) rau lub sijhawm thib ob ntawm cov khoom siv. Qhov q truth yog, cov kev siv CNC uas muaj cov feem ntawm kev siv robo, kev siv pallet robo, lossis kev siv tool management hauv cov khoom siv yuav muaj nqi nyob rau 40-60% ntau dua rau cov CNC 3-axis uas tsis muaj kev siv robo lossis siv robo ib leeg. Cov lus ntawm AMT pab tso cai rau qhov no. Tiamsi, cov kev siv tshuaj no yuav muaj kev tshuaj ntsuab thaum sijhawm tom qab los, vim tias lawv txo kev siv tshuaj hauv qhov sib xyaw. Peb hais txog kev txo 35% rau kev siv tshuaj hauv kev siv neeg thiab kev suav ntxiv rau kev ua yam tsis zoo thaum siv nyob rau qhov sib xyaw. Thaum sib piv, cov CNC 3-axis yuav seem ntau dua rau kev xaiv, tiamsi lawv yuav muaj kev siv tshuaj ntau dua rau lub sijhawm tom qab los vim tias lawv ua haujlwm yeej dua thiab xav tau kev siv neeg ntau dua. Cov neeg siv CNC uas muaj kev paub zoo nyob rau North America muaj kev xaiv nqi $58 per hour raws li cov lus ntawm BLS los ntawm 2023, uas ua rau kev txo nqi per hour no yuav tseem tseem ceeb dua.

Dab tsi uas muaj kev cuam tshuam rau lub neej ntawm cov khoom siv yog qhov uas yuav dhau los ua kom ntau dua rau kev faib cov nqi: kev xaiv thiab kev siv cov khoom siv yog ~70% ntawm cov nqi thib ob (CAPEX) thaum lub sijhawm thib ob, tab sis kev kho mob thiab kev siv cov khoom siv yog ntau dua 45% ntawm cov nqi thib peb (OPEX) tom qab lub sijhawm thib peb—los ntawm kev siv cov khoom siv uas tuaj yeem siv tau txog rau thaum siv lawm, kev tso cai rau cov khoom siv, thiab kev tawm ntawm kev siv cov khoom siv tsis raug. Yog tias peb paub txog cov cim uas muaj kev cuam tshuam ntau no, ces peb yuav tuaj yeem tso cov nqi rau hauv cov lus qhia thiab tsis yog cov lus qhia uas muaj kev sib tw.

Tshuaj xyuam cov ntaub ntawv uas muaj kev ntxiv nqi los ntawm kev suav: cov kev tswj hwm, qhov loj ntawm cov khoom, thiab qhov loj ntawm cov ntaub ntawv uas tsis yog qhov tseem ceeb

Thaum peb txhawj xyuam rau qhov ntau ntawm kev kho CNC, cov txiaj ntsim ntawm kev xaiv yeej yuav tshwm sim rau qhov ntau ntawm kev kho dua li kev xaiv cov ntaub. Cov khoom uas xav tau qhov ntau ntawm kev kho tsis tuaj yeem ntau dua 0.05mm yuav muaj qhov ntau ntawm kev kho ntau los ntawm 25% rau 200%. Vim li cas? Vim tias cov khoom siv yuav tsum siv cov khoom siv tshiab, ua ntev dua rau kev kho, thiab ua kev saib xyuam ntau dua raws li cov kev cai ASME uas txhua tus nyob hauv no lub tswv yim. Cov kab laug uas tsis yog kab laug tshwj xeeb, xws li cov kab laug hauv qab, cov kab laug uas ntau heev, lossis cov kab laug dav heev yuav siv cov neeg kho ntau dua 18 rau 32 feeb rau kev kho. Thiab peb tsis txhob saib tias kev tso cov khoom siv thiab kev tso cov lus rau kev kho yuav ua rau muaj kev pheej yig. Cov ntaub kuj ua rau qhov ntau ntawm kev kho ntau dua. Cov khoom siv Titanium yuav tsum kho ntau dua peb zaug rau cov khoom siv aluminum. Ntawd thiaj ua rau cov khoom siv kho ntau dua (nearly 27%) thiab qhov ntau ntawm kev siv hluav taws xob ntau dua rau txhua khoom siv. Qhov lwm yam uas cov neeg kho khoom siv yuav tshwm sim rau kev saib tias cov khoom siv uas muaj ntau yam tshiab thiab tshwj xeeb nyob hauv ib qho khoom siv. Ib qho khoom siv uas muaj tsawg kawg li 5 yam tshiab thiab tshwj xeeb yuav ua rau qhov ntau ntawm kev kho ntau dua 75% rau qhov ntau ntawm kev kho uas peb tau xaiv. Txhua yam no tshwm sim vim tias peb yuav tsum tso cov khoom siv ntau dua, ua kev saib xyuam rau qhov tshwj xeeb ntau dua, thiab ua ntau dua rau kev kho kom zoo.

Tshem tawm kev siv tso cai rau qhov ntau, qhov loo ntawm cov lwm, thiab kev siv tso cai ntawm kev sib txuas

Xam qhov loo ntawm cov lwm uas yuav tshem tawm kev sib txuas los ntawm qhov sib txuas, kev ua haujlwm ntawm kev sib txuas, thiab kev sib txuas ntawm CNC

Cov lwm txhais ntawm qhov tshuab tshuab rau kev pab cuam yog qhov tshuab tshuab ntawm cov ntaub ntawv uas yuav tau siv ua ntej li kev tsim kho yuav muaj kev nyab xeeb rau kev lag luam. Peb qhov tseem ceeb uas txhais qhov tshuab tshuab yog: qhov sij hawm uas yuav tau siv rau kev tso cai, qhov kev siv cov khoom tshuab rau kev tso cai yog li cas, thiab qhov kev siv cov khoom tshuab thaum sij hawm. Yog tias cov thawj kws tshuab cuam txaj siv qhov sij hawm rau kev tshuab thiab kev tso cai li qis dua, ces qhov cost per unit yuav qis dua. Rau cov lwm txhais uas muaj ntau yam khoom, yog tias lawv siv cov khoom tshuab uas tuaj yeem siv rau ntau yam khoom (modular) lossis siv rau ntau yam khoom hauv ib lub sij hawm (gang fixtures) zoo dua, ces qhov kev tsim kho yuav zoo dua li 15% rau 30%. Tiamsi, muaj ib qho tshuab tshuab uas yuav tsum paub. Thaum cov khoom tshuab siv li 80% ntawm qhov siv tau, qhov tshuab tshuab yuav muaj kev txawj ntse. Qhov kev nyab xeeb yuav qis dua, thiab qhov kev nyab xeeb yuav nce siab dua. Qhov sij hawm siv ntau dua yuav muaj, qhov hluav taws fab yuav ua rau muaj qhov tsis zoo, thiab qhov kev tshuab cuam yuav tsum tau siv ntau dua, uas txhua yam no yuav ua rau qhov kev nyab xeeb yuav qis dua li qhov xav tau.

Cov lwm txhais tshuab tshuab standard yuav siv tau—tiam sis yog tias cov variable costs yuav tsum sau qhov kev siv tau ntawm cov khoom tshuab hauv kev tsim kho:

Breakeven Batch Size = Fixed Setup Costs / (Revenue per Unit − Variable Cost per Unit)

Ntawd, cov variable cost yog tsum muaj cov khoom siv uas nyuaj (sib npaug los ntawm cov ntaub ntawv thiab qhov siab ntawm kev kho), cov ntaub ntawv uas tsis tau siv (sib npaug los ntawm kev txuas cov ntaub ntawv raws li kev sib twj thiab kev nco qhov tshwm sim), thiab lub zog (sib npaug los ntawm kev sib twj ntawm lub cev thiab qhov teeb meem)—tsis yog tseem ceeb rau kev ua haujlwm thiab cov ntaub ntawv puv.

Kev lag luam ntawm cov luj qhia: kev kho cov khoom tshiab rau kev siv ntau vs. kev kho CNC rau kev siv ntau

Txoj kev uas cov khoom sib tham yuav tsum muab txhawb nqa yuav tsum cuam tshuam rau qhov ntau npaum li cas lawv yuav tsim, tsis yog li cas los ntawm kev ntxiv ntau dua. Thaum pib tsim cov khoom tshiab, cov nqi uas tsis tau ua dua (non-recurring engineering costs) yuav nyob hauv qhov nqi tshwj xeeb. Ntawm qhov tseem ceeb, cov nqi uas muaj ntau dua 30 thiab 45 peb cent yuav muab siv rau cov lus piav qhia uas muaj kev sib tham, cov khoom sib tham uas muaj kev sib tham, thiab kev saib xyuas cov khoom tshiab thaum kawg. Rau kev tsim khoom ntau dua 500 lub per year, cov phab neeg yuav muaj kev puas tsuaj rau kev siv cov khoom sib tham vim cov khoom sib tham yuav tsis siv ntau dua 40 peb cent ntawm qhov siv tau zoo heev. Qhov no yuav ua rau muaj kev nqi ntau dua vim cov khoom sib tham tsis siv. Tsis tas li ntawd, cov phab neeg uas tsim khoom ntau dua 10,000 lub per year yuav muaj kev nqi ntau dua 18 thiab 25 peb cent per khoom. Lawv yuav muaj kev txaus siab los ntawm kev siv cov nqi tshiab, muab cov khoom sib tham ntau dua thiab muaj kev siv cov khoom sib tham zoo heev.

Kev tshuaj rau kev tso cai rau kev tshuaj yuav tsum ua raws li cov qhov no yog qhov kev tshuaj nyob rau hauv qhov kev tshuaj ntawm kev tshuaj; txhua qhov yuav tsum muaj kev tshuaj rau kev tshuaj, tsis yog kev tshuaj rau kev tshuaj los ntawm kev tshuaj rau kev tshuaj

Siv kev tshuaj rau kev tshuaj rau kev tshuaj (DFM) rau kev tshuaj rau kev tshuaj CNC

Sib npaug cov levers DFM—cov lus qhia tshwj xeeb, cov kev tswj hwm ua tsaug, thiab cov khoom siv tshwj xeeb—rau hauv cov kev xav txog lub tsev muag nyob rau lub caij kawg

Kev sau ua hauv kev tsim (DFM) tsis yog qhov kev txheeb xyuas kev quality xwb. Xaiv nws raws li qhov tswv yim tseem ceeb uas cov neeg tsim yuav tau siv rau thaum kawg ntawm qhov kev tsim, thiab nws yuav pab tau rau kev muaj kev nyab xeeb ntawm kev tsim. Yog tias cov thawj khoom ua kom zoo los ntawm qhov kev xav tshiab mus rau qhov kev sau ua hauv kev tsim, lawv yuav tuaj yeem tshem tawm cov teeb meem ntawm kev lag luam ua ntej lawv tau muaj kev xaiv rau cov khoom uas yuav tsum muaj kev lag luam ntau dua. Piv txwv li, khiav cov lus tshaj tawm los ntawm kev suav cov kab laug rau hauv ib qhov chaw tshwj xeeb yuav pab ua kom qhov kev tsim yuav haum rau lub tshuab ntau dua. Qhov kev tsim no yuav pab tshem tawm qhov teeb meem ntawm kev sau ua hauv kev tsim, ntau zaus yuav tshem tawm 40% thiab pab tshem tawm qhov teeb meem ntawm kev kho cov khoom. Tshem tawm cov kev tshaj tawm ntawm kev tshaj tawm cov khoom raws li cov kev tshaj tawm uas muaj nyob rau hauv ISO 2768-mK lossis ANSI B4.2 yuav pab tshem tawm qhov teeb meem ntawm kev lag luam ntau dua, uas yuav tshem tawm 15-30% rau ib qhov khoom. Thiab peb yuav pab txhawb cov khoom uas muaj kev tshaj tawm los ntawm kev tshaj tawm cov khoom uas muaj kev tshaj tawm los ntawm kev tshaj tawm cov khoom uas muaj kev tshaj tawm los ntawm kev tshaj tawm cov khoom uas muaj kev tshaj tawm los ntawm kev tshaj tawm cov khoom uas muaj kev tshaj tawm los ntawm kev tshaj tawm cov khoom uas muaj kev tshaj tawm los ntawm kev tshaj tawm cov khoom uas muaj kev tshaj tawm los ntawm kev tshaj tawm cov khoom uas muaj kev tshaj tawm los ntawm kev tshaj tawm cov khoom uas muaj kev tshaj tawm los ntawm kev tshaj tawm cov khoom uas muaj kev tshaj tawm los ntawm kev tshaj tawm cov khoom uas muaj kev tshaj tawm los ntawm kev tshaj tawm cov khoom uas muaj kev tshaj tawm los ntawm kev tshaj tawm cov khoom uas muaj kev tshaj tawm los ntawm kev tshaj tawm cov khoom uas muaj kev tshaj tawm los ntawm kev tshaj tawm cov khoom uas muaj kev tshaj tawm los ntawm kev tshaj tawm cov khoom uas muaj kev tshaj tawm los ntawm kev tshaj tawm cov khoom uas muaj kev tshaj tawm los ntawm kev tshaj tawm cov khoom uas muaj kev tshaj tawm los ntawm kev tshaj tawm cov khoom uas muaj kev tshaj tawm los ntawm kev tshaj tawm cov khoom uas muaj kev tshaj tawm los ntawm kev tshaj t......

Cov lus teb ntawm qhov kev sib txuas ntau dua (DFM) yog qhov uas pab tshem cov kev ua haujlwm uas tsis raug thiab cov kev ua haujlwm uas nyuaj rau lub cim ntawm kev ua haujlwm, uas yog cov kev ua haujlwm uas muaj ntau dua li 40% ntawm cov kev ua haujlwm uas tsis raug thiab cov kev ua haujlwm uas nyuaj rau lub cim ntawm kev ua haujlwm. Ntau yam ntawm cov teeb meem no yog los ntawm kev ua dua cov lus qhia ntau dua, kev ua haujlwm rau kev ua haujlwm rau kev ua haujlwm, thiab kev ua haujlwm rau kev ua haujlwm rau kev ua haujlwm. Yog li no, kev xaiv cov nqi uas zoo yuav tsum muaj kev ua haujlwm DFM zoo rau kev ua haujlwm rau kev ua haujlwm. Thaum cov thawj coj ua no, lawv tsis yog kev paub tseeb rau kev xaiv cov nqi ntawm lawv, tab sis lawv kuj tau ua kev xaiv cov nqi rau kev ua haujlwm. Qhov twg? Cov neeg ua haujlwm ntawm kev ua haujlwm, cov neeg xaiv cov nqi rau cov khoom, thiab cov neeg ua haujlwm ntawm kev ua haujlwm yuav ua haujlwm rau lub cim ntawm kev ua haujlwm zoo ib yam, tsis yog ua haujlwm rau lub cim ntawm kev ua haujlwm.

Xa cov neeg ua haujlwm, cov khoom ua haujlwm, thiab cov nqi ua haujlwm rau kev ua haujlwm CNC rau kev sib txuas

Kuam paub txog kev qhia cov nqi tshwj xeeb raws li qhov tseeb yog qhov tseeb uas yuav tsum mus rau hauv qhov kev sib piv ntawm cov lej tseem ceeb thiab qhov kev sib piv ntawm kev siv tau raws li qhov tseeb. Thaum tsim cov nqi, thov ua kom muaj kev ntsiab txog qhov teeb meem ntawm kev siv tau ntawm cov khoom siv raws li qhov teeb meem thiab tsis yog kev siv tau raws li qhov kev siv tau ntawm cov lus qhia ntawm qhov kev siv tau ntawm cov neeg siv khoom. Cov khoom uas yuav tsum muaj ntau yam kev siv tau lossis yuav tsum muaj ntau yam kev siv tau los ntawm cov neeg siv khoom yuav pab cuam kev nqi ntawm cov neeg siv khoom mus rau hauv qhov 15% rau 30% siab dua qhov nqi ntawm cov kev siv tau ntawm cov khoom siv uas tsis muaj kev siv tau los ntawm cov neeg siv khoom. Rau qhov nqi ntawm cov khoom siv, qhov tseeb uas yuav tsum ua kom muaj kev ntsiab yog qhov kev ntsiab txog qhov kev siv tau ntawm cov khoom siv (siv RPMs, kev siv tau thiab qhov deep ntawm kev siv tau) tsis yog kev ntsiab txog qhov hnub thiab qhov xyoob. Cov khoom siv zoo li Inconel lossis cov khoom siv uas tau siv tau ntau yam yuav pab cuam kev siv tau ntawm cov khoom siv mus rau hauv qhov 40% siab dua qhov kev siv tau ntawm cov khoom siv zoo li 6061 aluminum. Qhov no yog qhov pab cuam kev siv tau ntawm cov khoom siv thiab yuav tsum muaj kev siv tau ntawm cov khoom siv zoo li qhov kev siv tau ntawm cov khoom siv. Thiab tsis txhob hlub qhov nqi ntawm kev siv tau ntawm cov khoom siv zoo li kev siv tau ntawm cov khoom siv, kev siv tau ntawm cov khoom siv thiab kev siv tau ntawm cov khoom siv. Cov nqi no yuav tsum sib npaug raws li qhov kev siv tau ntawm kev tsim khoom. Even thaum cov khoom siv tsis siv tau, lawv yuav tsum siv tau rau hauv qhov 20% ntawm qhov kev siv tau siab tshaj plaws, tab sis qhov no tsis yuav tsum siv tau raws li qhov nqi ntawm cov khoom siv uas yuav tsum siv tau raws li qhov kev siv tau ntawm cov khoom siv.

Kuam siv cov lus tshuaj uas muaj IoT thiab siv rau kev siv khoom yuav pab txhawb kev npaj nqi nyob rau hauv lub sijhawm tsis tau; nqi yuav raug npaj rau kev siv cov neeg, cov khoom siv, thiab cov nqi tshwj xeeb uas txhua qhov kev ua yuav siv rau qhov kev siv ntawd . Qhov no pab tshem tawm kev npaj nqi ntau dua rau cov sijhawm uas tsis siv khoom ntau, thaum kuj pab tshem tawm kev npaj nqi rau cov sijhawm uas siv khoom ntau tshaj plaws, thiab pab txhawb kev npaj nqi thiab kev ua haujlwm ntau dua rau cov CNC machining lines.

Qhia Tswv Yim

• Puas yog vim li cas cov CNC systems uas muaj kev ua haujlwm tam sim no yuav muaj nqi ntau dua?
  Cov CNC systems uas muaj kev ua haujlwm tam sim no muaj cov feem ntau tshaj plaws, los ntawm kev siv cov robot rau kev ntxig qhov khoom, thiab kev siv cov pallet changers tam sim no, uas pab tshem tawm kev npaj nqi ntau dua rau lub caij thib ob, tab sis pab tshem tawm kev npaj nqi rau kev ua haujlwm tom ntej.
• Koj yuav ua li cas kom tshem tawm kev npaj nqi rau CNC machining uas nyob rau hauv kev sau?
  Los ntawm kev siv cov principles ntawm Design for Manufacturability (DFM), los ntawm kev siv cov feature consolidation thiab kev ntsuas cov tolerances zoo ib yam rau lub caij thib ob ntawm kev sau, koj yuav tuaj yeem tshem tawm kev npaj nqi rau CNC machining.
• Cov nqi twg yog cov nqi uas pab tshem tawm kev npaj nqi rau CNC machining?
  Cov qhov ntsiab lus uas tso cai rau kev tswj hwm yog txheeb xyuas los ntawm lub sijhawm tshem tawm, kev siv cov khoom tshem tawm thiab cov cuab yeej sib sau, uas pab txheeb xyuas qhov kev muaj txiaj ntsig ntawm kev lag luam.
• Yog li cas cov lus qhia txog kev siv nyob rau hauv sijhawm tib neeg tuaj yeem pab zoo dua kev tswj hwm cov nqi rau CNC?
  Cov lus qhia txog kev siv pab rau kev faib cov nqi raws li qhov kev siv nyob rau hauv sijhawm tib neeg, uas pab tshem tawm kev faib nqi ntau heev thaum kev siv tsis loj thiab pab tshem tawm kev faib nqi tsis sufficiency rau thaum kev siv loj.