Lub pob ntsia hlau thiab khib-thiab-pinion system tuaj yeem hloov pauv lub cev muaj zog mus rau hauv kev txav mus los, tab sis lawv tsis coj tus cwj pwm zoo ib yam li qhov ntev mus ncig, ceev thiab txiav quab yuam nce. Pob ntsia hlau yog feem ntau xaiv rau kev noj zaub mov kom raug, tsis tshua muaj kev sib txhuam thiab tswj cov backlash. Khib-thiab-pinion drives feem ntau xav txog ntev CNC router axes qhov twg yuav tsum tau mus ceev ceev thiab ib tug rotating ntsia hlau yuav nyuaj rau tswj.
Tsis siv neeg kis tau tus mob nqa lub tshuab rooj los ntawm nws tus kheej. Cov kab ntawv qhia kev txhawb nqa kev txav mus los thiab tswj kev taug kev, thaum lub pob ntsia hlau lossis khib- thiab - pinion tsav muab lub zog uas txav lub axis. Kev xaiv ntawm ob yog li yuav tsum tau ntsuas qhov ua tiav axis es tsis yog sib piv cov ntsia hlau thiab khib nkaus xwb.
Rau ntau lub tshuab compact thiab nruab nrab CNC, lub pob ntsia hlau xaiv tau zoo tseem yog qhov kev daws teeb meem zoo. Rau qhov ntev gantry axis ntsuas ob peb metres, txawm li cas los xij, ceev ceev, ntsia hlau nplawm thiab kev txhawb nqa tuaj yeem ua rau khib thiab pinion ua tau zoo dua. Qhov kev xaiv raug yog nyob ntawm stroke, ceev-traverse ceev, txiav raug, txav loj, installation tej yam kev mob thiab txij nkawm muaj peev xwm.
Yuav ua li cas ob lub CNC tsav Systems ua haujlwm
Nyob rau hauv ib tug pa pob ntsia hlau axis, lub cev muaj zog rotates lub ntsia hlau ncej los ntawm ib tug coupling los yog siv kis tau tus mob. Recirculating npas yob nruab nrab ntawm cov ntsia hlau thiab cov txiv ntoo raceways, ua rau cov txiv ntoo thiab lub rooj sib txuas tshuab txav mus rau linearly. Rolling kev sib cuag muab kev siv tshuab ua haujlwm siab thiab tso cai rau lub kaw lus xa cov axial thrust nrog kev sib txhuam qis.
Hauv khib-thiab- pinion axis, lub khib yog kho raws lub tshuab ncej thaum lub cev muaj zog tig lub pinion iav uas meshes nrog cov hniav khib. Lub pinion thiab lub cev muaj zog feem ntau mus nrog lub gantry txav los yog tsheb thauj mus los. Vim tias cov khib nyiab tau txais kev txhawb nqa tsis tu ncua raws li tus ncej, lub kaw lus tsis muaj qhov ntev rotating ncej uas tuaj yeem nplawm ntawm nws lub ntuj zaus.
Qhov kev sib txawv ntawm cov qauv no dhau los ua qhov tseem ceeb vim tias cov axis tau ntev dua. Lub pob ntsia hlau tau txais kev txhawb nqa los ntawm nws qhov kawg bearings thiab yuav sag lossis vibrate ntawm cov kev txhawb nqa. Lub khib yog mounted raws nws qhov ntev, tab sis nws qhov tseeb nyob ntawm cov hniav zoo, kev sib koom ua ke, kev sib koom ua ke, lubrication thiab backlash - tswj txoj kev.
Pob Screw vs Rack thiab Pinion: Qhov txawv ntawm qhov tseem ceeb
| Xaiv Factor | Pob Ntsia Hlau | Rack thiab Pinion |
|---|---|---|
| Yam muaj zog | Qhov tseeb pub mov, siab thrust thiab tswj backlash | Ntev mus ncig thiab siab linear ceev tsis muaj ntsia hlau nplawm |
| Mob stroke | Feem ntau siv tau rau kev mus ncig luv luv thiab nruab nrab; mus ntev yuav tsum tau ceev faj xyuas kom meej | Zoo haum rau lub tshuab axes ntev vim tias cov khib nyiab tuaj yeem koom nrog |
| Kev txwv ceev | Raug cuam tshuam los ntawm cov ntsia hlau tseem ceeb ceev, ceev ceev txwv thiab kev txhawb nqa | Tsis txwv los ntawm qhov tseem ceeb ceev ntawm ib tug ntev rotating ntsia hlau |
| Rov qab | Nws tuaj yeem raug txo los ntawm preload los yog cov qauv tsim nyog | Nyob ntawm cov hniav zoo, pinion kev koom tes thiab preload mechanism |
| Positioning raug | Muaj nyob rau hauv cov qhab-nees raug cai - | Nyob ntawm racking pitch precision, khib pob qij txha, iav zoo thiab kev tawm tswv yim tswj |
| Kev kis kab mob | Raceways thiab pob ncig yuav tsum tau tiv thaiv los ntawm chips thiab plua plav | Cov hniav raug tshem tawm kuj yuav tsum tau ntxuav thiab lubrication, tshwj xeeb tshaj yog nyob ib ncig ntawm cov plua plav abrasive |
| Kev tu | Lubrication, sealing, sib dhos, kev txhawb nqa bearings thiab txiv ntoo mob | Cov hniav lubrication, iav kev koom ua ke, khib pob qij txha, hnav thiab rov qab hloov kho |
| Tej kev siv | CNC feed axes, Z axes, machining chaw thiab precision automation | Loj CNC routers, plasma tshuab thiab ntev gantry systems |
Yog vim li cas Travel Length tseem ceeb rau lub pob ntsia hlau
Lub pob ntsia hlau tsis tuaj yeem xaiv los ntawm txoj kab uas hla thiab txhuas ib leeg. Raws li qhov tsis muaj kev txhawb nqa kev ncua deb ntawm bearings nce, qhov tseem ceeb rotational ceev poob sai heev. Nyob ze ntawm qhov tseem ceeb ceev, lub ncej yuav pib nplawm, ua kom muaj kev vibration, suab nrov, bearing load, tsis ruaj tsis khov qhov chaw thiab muaj peev xwm ua rau cov txiv ntoo ncig.
Ib qho kev sib raug zoo ua ntej metric feem ntau yog:
ncr = K × dr × 107 ÷ L2
qha ncryog qhov kwv yees qhov ceev ceev hauv rpm, dryog lub hauv paus taub hau hauv millimeters, L yog qhov ntev tsis txhawb nqa ntawm kev txhawb nqa hauv millimeters, thiab K yog qhov kawg - txhawb nqa.
Qhov tseeb thiab kev txwv kev nyab xeeb yuav tsum raug coj los ntawm cov chaw tsim khoom xaiv cov txheej txheem suav. Cov neeg sawv cev ua ntej yam tseem ceeb yog kwv yees li 3.9 rau kev ruaj khov - pub dawb, 12.1 rau kev txhawb nqa - txhawb nqa, 18.7 rau kev ruaj khov - txhawb nqa thiab 27.2 rau kev ruaj khov - cov kev npaj ruaj khov. Cov yam tseem ceeb no yuav tsum tsis txhob raug kho raws li kev hloov pauv rau lub pob ntsia hlau chaw tsim khoom qhov kev txheeb xyuas zaum kawg.
Qhov kev sib raug zoo tseem ceeb yog lub sij hawm squared ntev. Yog tias qhov kev txhawb nqa ntev tsis tau nce ntxiv thaum txoj kab uas hla thiab kev txhawb nqa tsis hloov pauv, qhov nrawm nrawm yuav txo qis rau 1 / L². nce kev mus los ntawm 1 meter mus rau 2 meters tsis tsuas yog ib nrab ntawm kev tso cai ceev; qhov kwv yees qhov ceev tseem ceeb poob rau kwv yees li ib -lub quarter.
Yog xav paub ntxiv txog qhov kev txwv no, saibyuav ua li cas kom tsis txhob pob ntsia hlau tseem ceeb ceev.
Ntev -Tsev xam piv txwv
Xav txog qhov ua ntej CNC axis siv lub pob ntsia hlau nrog cov txiaj ntsig hauv qab no:
- Hauv paus taub: 25 mm
- Lead: 10mm / kiv
- Xaus kev txhawb nqa: tsau - txhawb nqa
- Kev txhawb nqa siv rau kev suav ua ntej: 18.7
Piv txwv A: 2,000 mm Unsupported Length
ncr = 18.7 × 25 × 107 ÷ 2,000²
ncr≈ 1,169 rpm
Theoretical linear ceev=1,169 × 10 ≈ 11.69 m/min
Lub tshuab yuav tsum tsis txhob nquag ua haujlwm tsis tu ncua ntawm kev suav ceev ceev. Yog tias qhov kev txwv kev nyab xeeb ua ntej ntawm 80% yog siv, cov ntsia hlau ceev tau kwv yees li 935 rpm thiab cov kab sib txuas ceev yog li 9.35 m / min.
Piv txwv B: 3,000 mm Unsupported Length
ncr = 18.7 × 25 × 107 ÷ 3,000²
ncr≈ 519 rpm
Theoretical linear ceev=519 × 10 ≈ 5.19 m/min
Ntawm 80% ntawm tus nqi ua ntej no, qhov sib thooj linear ceev tsuas yog li 4.15 m / min. Qhov piv txwv qhia tau hais tias vim li cas lub ntsia hlau uas haum rau 2- axis meter yuav tsis ua tau raws li qhov yuav tsum tau ua kom nrawm nrawm tom qab qhov tsis txhawb nqa ntev nce mus rau 3 meters.
Qhov no tsis tsim kom muaj universal 2-meter lossis 3-meter faib kab. Lub hauv paus loj dua, cov hlau lead ntau dua, kev txhawb nqa ruaj khov, rotating-nut tsim lossis kev txhawb nqa nruab nrab ntawm cov tswv yim yuav hloov qhov tshwm sim. Qhov kawg xaiv yuav tsum tau kuaj xyuas tus nqi DN, ceev ceev, axial load, buckling, acceleration torque, thermal expansion thiab bearing peev.
Qhov twg Pob Screws muaj qhov zoo
Lub pob ntsia hlau feem ntau yog qhov kev xaiv muaj zog dua thaum CNC axis yuav tsum tau tswj kev noj zaub mov, siab thrust thiab ruaj khov rov qab qhov tseeb tshaj qhov luv luv lossis nruab nrab stroke. Cov ntsia hlau ntsia hlau yog tsim raws li cov chav kawm raug, tso cai rau cov neeg tsim khoom siv los cuam tshuam cov lus txib tig mus rau qhov xav tau kev txav mus los.
Preloaded pob txiv ntoo qauv tuaj yeem txo axial clearance thiab txhim kho rigidity thaum cov lus taw qhia rov qab. Qhov no yog tshwj xeeb tshaj yog pab tau rau machining axes qhov backlash tuaj yeem cuam tshuam qhov chaw ntawm lub qhov, contour raug thiab nto tiav. Lub dov-kev sib cuag tsim kuj muab kev sib kis tau zoo, yog li lub cev muaj zog tuaj yeem hloov lub zog rau hauv axial quab yuam nrog kev sib txhuam qis.
Cov pob ntsia hlau feem ntau siv rau ntawm CNC Z axes vim tias cov hlab ntsha feem ntau luv dua li lub ntsiab gantry mus ncig thiab cov axis yuav tsum tau tswj qhov tob. Lub pob ntsia hlau ntsug axis tseem yuav tsum muaj qhov tsim nyog lub cev muaj zog nres, counterbalance lossis lwm yam kev ntsuas kev nyab xeeb vim tias lub pob ntsia hlau yuav tsum tsis txhob xav tias yog tus kheej - xauv.
Cov pob ntsia hlau kuj tseem yuav nyiam rau kev cog lus X thiab Y axes, hlau - txiav cov khoom noj, cov tshuab drilling, cov lus qhia qhov tseeb thiab cov khoom siv automation qhov twg thrust thiab positioning stability yog qhov tseem ceeb tshaj li kev mus los ntev heev.
Qhov twg Rack thiab Pinion muaj qhov zoo
Khib-thiab- cov tshuab pinion ua kom zoo nkauj thaum lub tshuab muaj qhov ntev thiab yuav tsum muaj lub siab ceev ceev -traverse ceev. Cov khib nyiab tau kho tsis tu ncua rau lub tshuab thav duab, yog li ua kom nws qhov ntev tsis tsim tib lub rotating-shaft tseem ceeb- teeb meem ceev pom nyob rau hauv ib tug pa pob ntsia hlau.
Cov seem khib kuj tuaj yeem koom ua ke los tsim kev mus ncig ntev yam tsis muaj kev tsim khoom thiab thauj ib qho kev sib tw ntev heev. Qhov no muaj txiaj ntsig zoo rau cov ntoo ua haujlwm loj, vaj huam sib luag- cov tshuab ua haujlwm, cov ntxhuav ntshav thiab lwm yam khoom siv gantry nrog kev mus los ntsuas hauv ob peb meters.
Txawm li cas los xij, khib thiab pinion yuav tsum tsis txhob raug piav qhia tias tsis raug. Ib qho khoom tsim tau zoo thiab txhim kho precision khib nyiab tuaj yeem muab kev ua haujlwm zoo. Nws cov txiaj ntsig yog nyob ntawm qhov tseeb ntawm cov khib nyiab, qhov zoo ntawm pinion, kev sib txuas ntawm cov hniav, preload los yog phua-pinion kev npaj, reducer backlash, khib- kev sib koom ua ke thiab kev tawm tswv yim tswj.
Hloov pauv, qhov qis - qhov zoo lossis cov khib nyiab tsis zoo tuaj yeem tsim qhov rov qab tsis sib xws thiab qhov chaw sib txawv ntawm cov axis. Tus tsim lub tshuab yuav tsum ntsuas qhov ua tiav tsav, tsis yog tsuas yog xav tias txhua qhov khib nyiab yog qhov tsim nyog rau kev txav mus ntev, raug.
Qhov tseeb, rov ua dua thiab rov qab tsis zoo ib yam
Qhov tseeb piav qhia txog qhov tseeb ntawm txoj haujlwm axis zoo li cas rau txoj haujlwm tau txib. Repeatability piav qhia txog qhov xwm txheej li cas cov axis rov qab mus rau tib txoj hauj lwm nyob rau hauv tib yam kev mob. Backlash yog qhov ploj mus uas yuav tshwm sim thaum tsav rov qab kev taw qhia.
Lub pob ntsia hlau tuaj yeem muaj qhov raug txhuas zoo tab sis tseem qhia txog qhov yuam kev rov qab yog tias cov txiv ntoo muaj kev tshem tawm, cov kev txhawb nqa bearings muaj axial ua si lossis qhov sib txuas yog xoob. Lub khib-thiab- pinion system tuaj yeem rov ua txoj haujlwm tsis tu ncua tab sis tseem muaj qhov ua yuam kev hauv lub suab raws li kev mus ncig tag nrho.
Qhov kawg CNC raug tseem cuam tshuam los ntawm:
- Kev taw qhia kab qhia kev sib dhos thiab mounting - qhov tseeb
- Tshuab -frame rigidity
- Motor thiab encoder daws teeb meem
- Gearbox los yog coupling backlash
- Thermal expansion
- Gantry squareness
- Controller them nyiaj thiab tuning
- Txiav - quab yuam deformation
Vim li no, kev hloov ntawm khib thiab pinion mus rau lub pob ntsia hlau tsis tuaj yeem kho lub thav duab tsis muaj zog lossis cov kev qhia tsis zoo. Cov kab ke sib kis tsuas yog ib feem ntawm cov saw hlau ua tiav.
Load thiab Rigidity: Dab tsi Txhua Tsav Tsheb Tiag Tiag
Cov kab ntawv qhia yuav tsum txhawb nqa qhov hnyav ntawm gantry, spindle, carriage lossis rooj. Lub pob ntsia hlau ntsia hlau yog tsim los nqa axial thrust raws cov ntsia hlau axis, tsis tas li radial lossis overturning load. Misalignment ntawm cov ntsia hlau, txiv ntseej vaj tse thiab cov kab ntawv qhia tuaj yeem qhia txog kev thauj khoom sab nraud thiab ua rau lub neej ua haujlwm luv.
Ib lub khib-thiab- pinion tsav kuj yuav tsum muaj kev taw qhia cais. Lub pinion muab kev quab yuam los ntawm cov hniav khib nyiab, thaum cov lus qhia rails tswj txoj hauj lwm thiab kev taw qhia ntawm qhov txav gantry. Qhov siab khib nyiab tsis raug lossis kev sib koom tes pinion tuaj yeem tsim cov hniav tsis sib xws, tab sis cov khib nyiab yuav tsum tsis txhob siv los hloov cov kab lus qhia.
Thaum ntsuas lub peev xwm tsav, paub meej tias qhov yuav tsum tau muaj zog los ntawm kev nrawm, txiav tsis kam, kev sib txhuam, lub ntiajteb txawj nqus thiab sab nraud quab yuam. Rau lub pob ntsia hlau, compression loading yuav tsum tau kuaj xyuas cov kab buckling. Yog li ntawd, cov ntsia hlau txoj kab uas hla yuav tsum tau xaiv siv load, ntev thiab ceev ua ke es tsis xaiv ib tug loj txoj kab uas hla nkaus xwb vim lub tshuab yog hnyav. Saib daim ntawv qhia DLY ntawmyuav ua li cas xaiv lub pob ntsia hlau txoj kab uas hla.
Kev tu thiab ua haujlwm ib puag ncig
CNC routers tuaj yeem tsim cov plua plav ntoo, cov khoom sib xyaw, cov ntawv txhuas los yog cov khib nyiab abrasive. Pob ntsia hlau raceways yuav tsum muaj kev tiv thaiv zoo vim tias kev sib kis tuaj yeem nkag mus rau hauv cov txiv ntoo, cuam tshuam lub pob ncig thiab ua kom nrawm rau kev hnav. Bellows, npog, seals, wipers thiab lubrication tsis tu ncua yuav tsum tau nyob ntawm lub tshuab ib puag ncig.
Cov hniav khib nyiab tau nthuav tawm ntau dua thiab tej zaum yuav yooj yim rau kev tshuaj xyuas, tab sis lawv tsis muaj kev saib xyuas - dawb. Plua plav sib xyaw nrog roj tuaj yeem tsim cov tshuaj abrasive. Cov hniav ntawm cov hniav, kev sib koom tes pinion, khib cov pob qij txha thiab cov nraub qaum- kho cov txheej txheem yuav tsum tau kuaj xyuas ib ntus.
Qhov kev xaiv zoo dua yog li cuam tshuam los ntawm yuav ua li cas lub tshuab yuav tiv thaiv thiab tswj xyuas. Ib qho theoretical raug tsav yuav ua tsis tau nws qhov kev ua tau zoo yog tias qhov chaw ua haujlwm tiag tiag tsis quav ntsej.
Ib lub CNC Router puas tuaj yeem siv ob lub tshuab?
Yog lawm. Lub tshuab tsis tas yuav siv tib hom tsav ntawm txhua axis. CNC router loj tuaj yeem siv khib thiab pinion ntawm nws qhov ntev X thiab Y axes thaum siv lub pob ntsia hlau ntawm luv Z axis. Qhov kev npaj no sib xyaw ua ke siab - nrawm mus ntev nrog qhov tseeb ntsug qhov tob tswj.
Qee lub tshuab kuj siv cov kev qhia tshwj xeeb sib txawv ntawm qhov sib npaug gantry sab. Thaum ob lub cev muaj zog tsav ib lub gantry, tus maub los yuav tsum ua kom ob sab synchronized kom tsis txhob racking. Mechanical alignment, homing sensors thiab gantry-squaring cov txheej txheem tseem tseem ceeb tsis hais tus tsav xaiv.
Kev xaiv tswv yim los ntawm CNC Application
| Daim ntawv thov | Tej zaum Pib Point | Yog vim li cas |
|---|---|---|
| Compact desktop CNC | Pob ntsia hlau | Short stroke, compact installation thiab tswj pub |
| Nruab nrab CNC milling axis | Pob ntsia hlau | High thrust, rigidity thiab reversal raug yog qhov tseem ceeb |
| Loj woodworking router | Ntsuas khib thiab pinion rau ntev X / Y axes | Kev mus ncig ntev thiab kev nrawm nrawm tuaj yeem dhau qhov ua tau zoo ntawm cov ntsia hlau- nrawm nrawm |
| Plasma tej rooj | Khib thiab pinion feem ntau xav txog | Kev mus ncig ntev thiab kev kub ceev yuav muaj teeb meem ntau dua li kev pub noj siab |
| luv CNC Z axis | Pob ntsia hlau nrog nres lossis kev nyab xeeb | Qhov tseeb qhov tob txav thiab compact siab -thrust tsav |
| Peb -meter gantry xav tau kev ceev ceev | Khib thiab pinion, los yog tshwj xeeb engineered ntsia hlau kev npaj | Ib qho yooj yim rotating pob ntsia hlau yuav tsum tau ceev faj tseem ceeb heev - ceev pov thawj |
Cov no yog cov ntsiab lus pib dua li cov kev cai ruaj khov. Qhov kev txiav txim zaum kawg yuav tsum tau ua los ntawm kev suav axis cov cai thiab cov ntaub ntawv pov thawj cov khoom pov thawj.
Cov ntaub ntawv xav tau ua ntej xaiv lub Drive
Ua ntej xaiv lub pob ntsia hlau lossis khib-thiab- pinion system, npaj cov ntaub ntawv hauv qab no:
- Tag nrho axis mus ncig thiab kev ncua deb ntawm kev txhawb nqa
- Yuav tsum tau ceev ceev thiab ib txwm txiav - pub ceev
- Qhov siab tshaj plaws acceleration thiab deceleration
- Tsiv loj, txiav quab yuam thiab installation kev taw qhia
- Yuav tsum tau positioning raug thiab repeatability
- Kev lees txais backlash lossis thim rov qab yuam kev
- Lub cev muaj zog ntsuas ceev, ncov torque thiab encoder specification
- Cia siab rau lub luag haujlwm voj voog
- Plua plav, chips, coolant thiab ua haujlwm kub
- Muaj qhov chaw installation thiab kev saib xyuas
Yog tias lub pob ntsia hlau raug txiav txim siab, kuj tseem lees paub cov ntsia hlau taub, lub hauv paus taub, cov hlau lead, qib raug, kev txhawb nqa, qhov kawg machining, txiv ntseej hom thiab qhov yuav tsum tau muaj txoj kab ntev. DLY tuaj yeem ntsuas tus qauv thiab kev caipob ntsia hlau sib dhosraws li cov xwm txheej no.
Kev xaiv zaum kawg
Lub pob ntsia hlau feem ntau yog ib qho kev xaiv muaj zog rau luv luv lossis nruab nrab CNC axis uas yuav tsum tau muaj siab thrust, tswj backlash thiab cov lus tsa suab kom raug. Khib thiab pinion ua kom txaus nyiam thaum lub axis ntev heev thiab yuav tsum ua tiav kev mus los nrawm yam tsis muaj qhov tseem ceeb - ceev txwv ntawm qhov ntev tig ntsia hlau.
Qhov kev txiav txim siab yuav tsum tsis txhob ua raws li kev ntseeg hais tias ib qho system yog universally ntau yog los yog ntau ruaj. Ib qhov zoo-tsim khib-thiab- pinion axis tuaj yeem ua tau zoo dua lub pob ntsia hlau ntev, thaum lub pob ntsia hlau txhawb nqa kom zoo thiab ua ntej tuaj yeem muab kev tswj kev noj zaub mov zoo dua li cov khoom khib nyiab tsis zoo.
Rau CNC router tsim, ntsuas txhua axis cais. Ntev X thiab Y axes tuaj yeem ua pov thawj khib thiab pinion, thaum lub Z axis luv dua tseem yuav tau txais txiaj ntsig los ntawm lub pob ntsia hlau. Yog tias lub pob ntsia hlau raug xaiv, txheeb xyuas qhov ceev ceev, buckling load, txhuas, lub cev muaj zog torque, kev txhawb nqa bearings, kev sib tw thiab kev tiv thaiv ib puag ncig ua ntej ua tiav qhov tsim.
Xav tau kev pab xyuas lub CNC Ball Screw?
Xa DLY koj CNC axis mus txawv tebchaws, txav load, xav tau ceev, raug, installation kev taw qhia thiab lub cev muaj zog specification. Peb tuaj yeem pab xyuas lub pob ntsia hlau taub, txhuas, qib raug, kev txhawb nqa thiab xaus -machining yuav tsum.
Email: export@dlybearing.com
