Lub npe nominal lub neej ntawm txoj kev qhia tawm yog ib qho tseem ceeb thaum xaiv ib qho kev qhia kev tsheb ciav hlau thiab thaiv rau CNC tshuab, automation khoom, ntsuas tshuab, ntim tshuab, thiab lwm yam kev siv linear motion. Nws pab engineers kwv yees ntev npaum li cas ib txoj kab qhia kev tuaj yeem taug kev ua ntej qaug zog flaking tshwm rau ntawm txoj kev sib tw lossis cov ntsiab lus dov.
Txawm li cas los xij, lub neej nominal tsis zoo ib yam li kev pabcuam lub neej. Txawm tias cov kev taw qhia ntawm tib tus qauv yuav qhia tau qhov sib txawv nyob ntawm qhov kev taw qhia ntawm kev thauj khoom, kev teeb tsa raug, lubrication, vibration, kub, chaw ua haujlwm, thiab kev saib xyuas. Vim li no, kev suav lub neej yuav tsum tau siv los ua ib qho kev xaiv, tsis yog raws li tus qauv txiav txim nkaus xwb.
Kab lus no piav qhia txog lub ntsiab lus nominal lub neej raulinear kev taw qhia, nrog rau cov pob hom thiab cov menyuam hom kev taw qhia, thiab qhia tau hais tias yuav ua li cas hardness yam, qhov kub thiab txias, load yam, dynamic load ntsuam xyuas, thiab mus ncig ceev cuam tshuam rau qhov kawg kev pab cuam lub neej kwv yees.
Kev nkag siab ceev:Linear guideway lub neej suav yog feem ntau yog hais txog kev sib raug zoo ntawm qhov yooj yim dynamic load ntsuam xyuasCthiab qhov tseeb xam loadP. Thaum lub load yuav siab dua, lub neej ntawm lub laij lej txo qis heev. Qhov no yog vim li cas qhov kev kwv yees kom raug yog qhov tseem ceeb tshaj qhov tsuas yog xaiv qhov loj ntawm txoj kab tsheb loj.
Dab tsi yog Lub Neej Ntawm Txoj Kev Qhia Tawm?
Thaum lub sijhawm ua haujlwm, txoj kev sib tw thiab kev sib tw ntawm txoj kev qhia tawm yog rov ua rau kev sib cuag nrog kev ntxhov siab. Tom qab ua haujlwm ntev -, qaug zog tuaj yeem tshwm sim ntawm cov hlau. Thaum me me ntawm cov khoom tev tawm ntawm txoj kev sib tw los yog dov cov ntsiab lus, qhov no feem ntau hu ua qaug zog flaking.
Lub neej ntawm txoj kev qhia txoj kab yog feem ntau qhia raws li tag nrho cov kev mus ncig ua ntej qaug zog flaking tshwm. Hauv cov tshuab ua tau zoo, lub neej kev pabcuam tiag kuj tseem tuaj yeem cuam tshuam los ntawm kev sib kis, lubrication tsis zoo, cuam tshuam kev thauj khoom, kev teeb tsa tsis raug, corrosion, lossis ntau dhau preload.
Yog li ntawd, thaum sib tham txog txoj kev coj lub neej, nws yog ib qho tseem ceeb kom paub qhov txawv ntawmsuav nominal lifethiabkev pab cuam lub neej. Lub neej nominal yog ib qho kev siv theoretical raws li kev ntsuas kev ntsuas thiab kev ua haujlwm, thaum lub neej kev pabcuam tiag tiag nyob ntawm seb txoj kev qhia tau xaiv, ntsia, lubricated, thiab siv li cas.
Nominal Life yog dab tsi?
Lub neej nominal feem ntau yog siv los ua tus qauv siv rau kev sib piv thiab xaiv cov kab lus qhia. Nws txhais tau hais tias tag nrho cov kev mus ncig uas 90% ntawm ib pab pawg ntawm cov kev coj ua zoo ib yam tuaj yeem ncav cuag yam tsis muaj qaug zog flaking thaum lawv tau ua haujlwm nyob rau hauv tib lub sijhawm.
Rau cov kev taw qhia kab nrog cov pob ua dov cov ntsiab lus, qhov kev ntsuas qhov nrawm nrawm feem ntau yog raws li lub neej nominal ntawm 50 km. Rau cov menyuam hom linear guideways, qhov yooj yim dynamic load ntsuam xyuas yog feem ntau raws li lub neej nominal ntawm 100 km. Qhov sib txawv no yuav tsum tau txiav txim siab thaum sib piv cov hom pob thiab cov menyuam hom kev taw qhia.
| Hom kev taw qhia | Rolling Element | Common Reference Lub Neej | Hom Feature |
|---|---|---|---|
| Pob hom linear guideway | Cov pob hlau | 50km ua | Cov lus tsa suab du, qis kev sib txhuam, dav siv hauv automation thiab CNC khoom. |
| Cov menyuam hom linear guideway | Cylindrical rollers | 100 km | Ntau dua rigidity thiab siab dua load peev xwm hnyav -lub luag hauj lwm los yog siab -precision systems. |
Basic Nominal Life Formula rau Linear Guideways
Kev ua yeeb yam muaj qhov cuam tshuam zoo rau lub neej nominal ntawm txoj kev qhia tawm. Hauv kev suav yooj yim, lub neej yog kwv yees los ntawm kev sib piv ntawm qhov yooj yim dynamic load ntsuasCnrog rau qhov tseeb xam loadP.
Pob hom linear guideway:
L = (C / P)3× 50 km
Roller yam linear guideway:
L = (C / P)10/3× 100 km
| Cim | Lub ntsiab lus | Chav tsev | Yuav Siv Li Cas |
|---|---|---|---|
| L | Nominal lub neej | km | Muab xam mus ncig ua si ua ntej qaug zog flaking reference point. |
| C | Basic dynamic load ntsuam xyuas | N sau kN | Feem ntau pom muaj nyob rau hauv cov kab lus qhia cov lus qhia tshwj xeeb. |
| P | Qhov tseeb xam load | N sau kN | Nws yuav tsum muaj xws li ua hauj lwm load, inertia load, lub sij hawm load, thiab load faib. |
Vim tias qhov sib piv thauj khoom tau nce mus rau qhov thib peb lub zog rau lub pob hom kev taw qhia, txawm tias qhov nce me me ntawm cov khoom siv tiag tiag yuav ua rau txo qis hauv kev suav lub neej. Qhov no yog vim li cas cov neeg tsim tshuab yuav tsum tsis txhob kwv yees lub zog nrawm, overhanging load, cuam tshuam kev thauj khoom, lossis tsis sib npaug ntawm cov khoom thauj ntawm ntau lub blocks.
Hloov Kho Nominal Life Formula
Hauv kev siv tiag tiag, cov kev qhia tawm tsis yog ib txwm siv nyob rau hauv cov xwm txheej zoo tagnrho. Kub, raceway hardness, vibration, shock load, lubrication, contamination, thiab installation raug yuav tag nrho cov hloov lub neej tiag tiag ua hauj lwm. Vim li no, cov qauv hloov pauv nominal lub neej feem ntau yog siv los xaiv qhov tseeb dua.
Hloov lub neej rau pob hom linear guideway:
L = [(fh × ft × C) / (fw × Pc)]3× 50 km
Hloov lub neej rau cov menyuam hom linear guideway:
L = [(fh × ft × C) / (fw × Pc)]10/3× 100 km
Hauv cov qauv no,fhyog hardness factor,ftyog qhov kub thiab txias,fwyog lub load factor, thiabPcyog xam load. Qee lub tshuab catalog kuj tseem yuav xav txog qhov sib tiv tauj thaum siv ntau lub blocks nyob ze. Cov mis nyuj tshwj xeeb yuav tsum ua raws li cov neeg tsim khoom xaiv cov ntaub ntawv.
Hardness Factor fh
Raceway hardness ncaj qha cuam tshuam rau lub peev xwm thauj khoom thiab qaug zog lub neej ntawm txoj kev qhia tawm. Feem ntau, qhov chaw sib tw hauv kev sib cuag nrog cov khoom dov yuav tsum ncav cuag qhov tsim nyog hardened qhov tob thiab hardness theem. Yog hais tias lub hardness yog qis dua qhov yuav tsum tau muaj, qhov tso cai load txo qis thiab lub neej nominal xam yuav luv dua.
Rau cov qauv linear guideways muab los ntawm DLY, qhov hardness factor feem ntau suav hais tias yog 1.0 nyob rau hauv cov xwm txheej tsis tu ncua. Yog tias muaj cov khoom siv tshwj xeeb, kev kho deg, lossis kev ua haujlwm txawv txav, qhov tseem ceeb yuav tsum tau lees paub cais.
| Qhov xwm txheej | Hardness Factor fh | Kev xaiv Note |
|---|---|---|
| Standard hardened raceway | Feem ntau 1.0 | Siv rau ib txwm linear guideway lub neej xam. |
| Tsawg dua - dua - yuav tsum muaj hardness | Tsawg dua 1.0 | Load rating yuav tsum tau txo ua ntej lub neej xam. |
| Cov khoom siv tshwj xeeb lossis kev kho tshwj xeeb | Paub meej nyias | Tshawb xyuas nrog tus neeg muag khoom ua ntej siv cov ntaub ntawv teev npe ncaj qha. |
Temperature Factor ft
Qhov kub thiab txias tuaj yeem txo qhov hardness thiab qhov ruaj khov ntawm cov kab qhia kev sib txuas. Nws kuj tseem tuaj yeem cuam tshuam cov ntsaws ruaj ruaj, lub kaus mom kawg, roj, cov khoom siv yas, thiab kev ua haujlwm lubrication. Vim li no, qhov chaw ua haujlwm ntawm ntau cov qauv kev qhia tawm tau pom zoo kom nyob qis dua 100℃tshwj tsis yog tias muaj qhov siab - qhov kub thiab txias configuration.
Thaum qhov kev khiav hauj lwm kub siab, qhov yooj yim dynamic load ntsuam xyuas thiab static load ntsuam xyuas yuav tsum tau kho los ntawm qhov kub thiab txias. Hauv cov ntawv thov xws li cov tshuab hluav taws xob, cov khoom siv vuam, tshuab ziab khaub ncaws, lossis siab - cov kab ntau lawm, cov kev qhia zoo tib yam yuav tsum tsis txhob xaiv los ntawm qhov loj. Cov khoom, cov ntsaws ruaj ruaj, lubrication, thiab accessories yuav tsum tau kuaj xyuas.
Load Factor fw
Lub load ua rau ntawm txoj kev taw qhia tsis yog tsuas yog qhov hnyav ntawm qhov txav mus, tab sis kuj tseem muaj lub zog inertia thaum lub sij hawm acceleration thiab deceleration, lub sij hawm thauj khoom los ntawm overhanging cov qauv, kev co, thiab kev cuam tshuam. Cov xwm txheej no nyuaj rau kev xam zoo kawg nkaus, yog li qhov khoom siv thauj khoom feem ntau siv los ua kom lub neej suav nrog kev saib xyuas ntau dua.
| Chaw thau khoom | Kev ceev ceev | Pom zoo Load Factor fw | Tej yam kev thov |
|---|---|---|---|
| Tsis muaj kev cuam tshuam los yog kev vibration | V Tsawg dua lossis sib npaug li 15 m / min | 1.0 - 1.2 | Qhov chaw qis qis, ntsuas cov cuab yeej, lub teeb -lub luag haujlwm phau ntawv lossis qis- ceev automation. |
| Kev cuam tshuam me me | 15 m / min < V Tsawg dua lossis sib npaug li 60 m / min | 1.2 - 1.5 | General automation, lub teeb CNC khoom, ntim lossis tuav tshuab. |
| Nruab nrab load lossis siab dua | 60 m / min < V Tsawg dua lossis sib npaug li 120 m / min | 1.5 - 2.0 | Nquag pib-nres nres, mob stroke ntev, acceleration dua, los yog kev vibration nruab nrab. |
| Kev cuam tshuam thiab kev vibration | V> 120m / min | 2.0 - 3.5 | High - cov khoom siv ceev, hnyav load, machining cuam tshuam, stamping, los yog kev ua haujlwm tsis ruaj khov. |
Ib qho kev thauj khoom ntau dua yuav txo tau lub neej suav, tab sis nws yuav zoo dua cuam tshuam txog kev ua haujlwm tiag tiag. Rau cov khoom siv uas nquag poob siab lossis kev vibration, siv qhov zoo ntawm qhov tsis tshua muaj peev xwm yuav ua rau muaj kev taw qhia uas zoo li siv tau hauv kev suav tab sis ua tsis tau sai dhau ntawm kev siv tiag tiag.
Dynamic Load Rating C
Qhov yooj yim dynamic load ntsuasCyog ib qho tseem ceeb tshaj plaws nyob rau hauv kev xaiv linear guideway. Nws sawv cev rau tus nqi thauj khoom siv rau kev xam lub neej raws li kev ntsuas ntsuas thiab siv cov xwm txheej. Nyob rau hauv feem ntau cov khoom catalogs, txhua rail loj thiab thaiv hom muaj nws tus kheej dynamic load ntsuam xyuas.
Piv txwv li, hnyav-load thaiv thiab super- hnyav-load thaiv yuav siv tib lub tsheb loj, tab sis lawv qhov ntev thaiv, kev sib txuas sab hauv dov, rigidity, thiab dynamic load rating tuaj yeem sib txawv. Qhov no yog vim li cas xaiv tsuas yog kev tsheb ciav hlau dav, xws li 15, 20, 25, 30, lossis 35 mm, tsis txaus.
DLY daim ntawv xaiv:Thaum xaiv HD, ED, RD, los yog MD series linear guideways, lub block hom, rail loj, load kev taw qhia, tus naj npawb ntawm blocks, raug qib, preload, thiab installation qhov chaw yuav tsum tau soj ntsuam ua ke. Ib qho kev sib txuas yuav txuag tau qhov chaw, thaum lub sij hawm ntev los yog cov menyuam -hom thaiv yuav muab ntau dua load peev xwm thiab rigidity.
Muab xam Kev Pabcuam Lub Sijhawm Lh
Lub neej nominal qhia raws li kev mus ncig, feem ntau hauv kilometers. Hauv ntau qhov project, engineers kuj yuav tsum kwv yees kev pab cuam lub neej nyob rau hauv cov sij hawm. Yog tias qhov sib npaug sib npaug tau paub, lub neej nominal tuaj yeem hloov mus rau lub sijhawm ua haujlwm.
Lub sijhawm ua haujlwm:
Lh = L × 103 / (Ve × 60)
| Cim | Lub ntsiab lus | Chav tsev |
|---|---|---|
| Lh | Kev pabcuam lub neej | teev |
| L | Nominal lub neej | km |
| Ve | Sib npaug mus ncig ceev | m/min |
Yog hais tias lub tshuab siv reciprocating tsab ntawv tsa suab nrog ib tug taag stroke thiab taag voj voog, kev pab cuam lub neej kuj yuav kwv yees los ntawm stroke ntev thiab reciprocation zaus. Rau kev txav tsis tu ncua, hloov pauv ceev, lossis ntau- lub voj voog ua haujlwm theem, kev suav yuav tsum tau hloov kho raws li qhov tseeb txav mus los.
Yooj yim xam piv txwv
Cov piv txwv hauv qab no qhia tau hais tias qhov piv txwv ntawm kev thauj khoom cuam tshuam li cas rau lub neej nominal ntawm lub pob hom linear guideway. Qhov no yog ib qho yooj yim xam rau kev nkag siab cov mis. Kev xaiv tiag tiag yuav tsum xav txog lub sijhawm thauj khoom, preload, lubrication, vibration, installation raug, thiab kev nyab xeeb margin.
Piv txwv tias ib lub pob hom linear guideway muaj:
- Basic dynamic load ntsuam xyuas C=20 kN
- xam load P=5 kN
- Pob hom siv lub neej=50 km
Lub neej nominal yog:
L = (20 / 5)3 × 50 = 43× 50=3200 km
Yog hais tias tus xam load nce ntawm 5 kN mus rau 10 kN, cov txiaj ntsig tau hloov pauv loj:
L = (20 / 10)3 × 50 = 23× 50=400 km
Hauv qhov piv txwv yooj yooj yim no, thaum lub laij lej load doubles, lub neej nominal txo los ntawm 3200 km rau 400 km. Qhov no qhia tau hais tias yog vim li cas qhov kev kwv yees kom raug thiab kev xaiv ntawm txoj kev tsheb ciav hlau yog qhov tseem ceeb hauv kev tsim cov qauv kev coj ua.
Feem ntau yuam kev hauv Linear Guideway Life Calculation
Cov qauv nominal lub neej muaj txiaj ntsig, tab sis qhov tsis raug ntawm cov tswv yim tseem ceeb tuaj yeem ua rau cov txiaj ntsig tsis raug. Cov kev ua yuam kev hauv qab no feem ntau tshwm sim thaum xaiv cov kev taw qhia linear:
| yuam kev | Vim Li Cas Nws Tseem Ceeb | Kev xyaum zoo dua |
|---|---|---|
| Tsuas yog xam qhov hnyav ntsug | Inertia load thiab lub sijhawm thauj khoom yuav ntau dua thaum lub sijhawm acceleration thiab deceleration. | Xyuas qhov chaw ntawm lub ntiajteb txawj nqus, acceleration, stroke direction, thiab load distribution. |
| Tsis quav ntsej overhanging load | Overhang tsim lub sijhawm thauj khoom thiab tsis sib npaug ntawm txhua qhov thaiv. | Siv ntau qhov thaiv lossis qhov dav dav dua thaum lub chaw thauj khoom nyob deb ntawm txoj kev taw qhia. |
| Siv cov khoom me me dhau lawm | Kev vibration thiab cuam tshuam tuaj yeem ua rau luv luv lub neej txoj kev. | Xaiv ib tug ntau conservative fwrau siab- nrawm lossis poob siab- khoom siv thauj khoom. |
| Sib piv cov pob thiab cov menyuam txoj kev qhia tsuas yog C tus nqi | Pob thiab cov menyuam cov kev taw qhia yuav siv cov kev siv lub neej sib txawv. | Paub meej tias qhov kev ntsuam xyuas yog raws li 50 km lossis 100 km ua ntej kev sib piv. |
| Tsis quav ntsej qhov tseeb installation | Tsis zoo sib xws los yog flatness tuaj yeem tsim cov khoom sab hauv ntxiv. | Tswj mounting nto qhov tseeb thiab kev tsheb ciav hlau sib dhos thaum sib dhos. |
Xaus
Nominal lub neej xam rau linear guideways yog raws li nyob rau hauv kev sib raug zoo ntawm cov yooj yim dynamic load ntsuam xyuas thiab qhov tseeb xam load. Rau pob hom kev taw qhia, lub neej feem ntau suav nrog kev sib raug zoo ntawm lub cubic, thaum cov menyuam hom kev taw qhia siv tus lej sib txawv thiab 100 km siv hauv paus.
Hauv cov tshuab tiag tiag, hardness, kub, vibration, cuam tshuam, installation raug, lubrication, preload, thiab ib puag ncig ua haujlwm yuav tsum tau txiav txim siab. Kev suav kom raug yuav pab nqaim qhov kev xaiv, tab sis qhov kawg ntawm txoj kev xaiv yuav tsum tseem raug kuaj xyuas ua ke nrog cov khoom siv thiab kev ua haujlwm.
Xav Tau Kev Pab Xaiv Txoj Kev Qhia Tawm?
DLY muab cov khoom siv pob thiab cov menyuam hom kab ntawv qhia rau CNC tshuab, automation systems, ntim khoom, ntsuas ntsuas, thiab hnyav -load motion platforms. Yog tias koj xav tau kwv yees txoj kev coj ua lub neej lossis xaiv qhov tsim nyog rail thiab thaiv series, koj tuaj yeem xa peb cov load, stroke, ceev, installation kev taw qhia, ib puag ncig ua haujlwm, thiab qhov yuav tsum tau muaj rau kev paub tseeb.
Email:export@dlybearing.com
