Yuav ua li cas kom ntseeg tau qhov ruaj khov ntawm high - precision pob screws?
Yuav ua li cas kom ntseeg tau tias qhov ruaj khov ntawmsiab - precision pob ntsia hlaus? Qhov no yog lus nug ntau tau nug los ntawm ntau tus neeg siv khoom. Raws li tus xa khoom tshwj xeeb tshwj xeeb hauv kev tsim khoom thiab kev siv ntawm kev ua haujlwm siab thiab C3 lossis C3 lossis C3 lossis C3 lossis Sai Tsis Txaus Siab thiab kev tswj hwm sai sai vim tias muaj kev tswj hwm tau yooj yim. Qhov ruaj khov ntawm siab - precision pob screws tsis yog txiav txim siab los ntawm cov khoom nws tus kheej; Nws yog ntau dua li "Txoj Haujlwm Engineering" {{{{{}}}}}}, siv rau cov khoom siv txo qis tsis zoo lossis ua haujlwm tsis tau ua tiav ntawm pob ntsia hlau. Niaj hnub no, peb yuav tawg rau hauv kev nthuav dav cov chaw tseem ceeb kom tsom mus rau qhov ua haujlwm ruaj khov ntawmsiab - precision pob ntsia hlaus.
Ua ntej, cov theem xaiv: Kev ua haujlwm sib txuam los tsim lub hauv paus ruaj khov.
1. Load txuam: zam "overloading" lossis "underloading khib"
Cov ntsuas ntsuas ruaj khov thauj khoom muaj peev xwmsiab - precision pob ntsia hlauCov yuav tsum muaj tsawg kawg 30% siab dua qhov tseeb ua haujlwm thauj khoom, thiab cov ntsuas kev ntsuas tsis pub dhau los ntawm 70 2}} Lub sijhawm ua haujlwm ntev ntxiv los ntawm kev ua kom nrawm rau ntawm ntsia hlau nto thiab nrawm dua kev ua haujlwm.
Yog tias lub nra ua tau zoo (piv txwv li, hauv cov khoom siv tsis tu ncua thiab nres), ib qho kev cuam tshuam ntxiv ntawm kev thauj khoom (thiab tus qauv nrog cov nqi ntsuas siab dua Dynamic. Lub siab - precision pob ntsia hlau rau ntawm c3 rau C5 LOAD tsis suav nrog 110% ntawm tus nqi ntsuas).
Lub teeb loads (<30% of rated load) may not directly cause damage but can lead to "sliding friction" due to insufficient contact stress between balls and raceways, increasing operational resistance and affecting stability. The lead screw of a precision measuring device experienced fluctuations in repeat positioning accuracy from ±0.001 mm to ±0.003 mm due to light load operation. After adjusting the counterweight to achieve a load of 50% of the rated value, stability returned to normal.
2. Kev Hloov Kho Ceev: Zam cov "resonance zaus" ntau zaus
Qhov siab tshaj plaws kev khiav haujlwm ceev ntawm a siab - precision pob ntsia hlauYuav tsum muaj qis dua 80% ntawm nws qhov ceev tseem ceeb. Qhov kev nrawm tseem ceeb tuaj yeem kwv yees siv cov mis (n_c}}}}}}} Kev ua haujlwm ceev, uas tuaj yeem tsim kev co thiab qhov tsis txaus ntseeg hauv qhov tseeb.
Rau lub pob ntsia hlau nyob rau hauv ib tug semiconductor ntaus ntawv (taub 20 mm, txhawb nqa ncua 800 mm), qhov tseem ceeb ceev yog kwv yees li 6250 rpm. Qhov kev khiav haujlwm tiag tiag yog tswj tau hauv qab 5000 RPM, nrog kev co amplitude ruaj khov hauv qab 0.005 mm thaum haujlwm; Yog tias qhov nrawm yog nce rau 6000 rpm (nce qhov tseem ceeb ceev), qhov kev ci siab sai sai rau 0.02 mm, thiab txoj hauj lwm raug kho kom zoo heev.
Thib ob, theem teeb tsa: kev ua haujlwm los txo qis kom tsawg tus precision poob
1. Txheej txheem ntsuas: ua kom meej "tsis muaj kev ntxhov siab ntxiv"
Thaum lub sij hawm teeb tsa, kev ua yuam kev ntawm kev ua yuam kev ntawm cov tawv taub hau axis thiab cov lus qhia txog kev sib tw ntawm kev ua haujlwm, uas yuav ua rau ib qho kev ua haujlwm, uas yuav ua rau ib qho- ated sided hnav ntawm raceway.
Cov khoom siv laser sib dhos tuaj yeem siv rau kev ntsuas. Thaum txhim kho C5-qib ua qauv txhuas ntawm lub tshuab ua kom nruj Tom qab 1,000 teev ntawm kev ua haujlwm, cov ntsia hlau txhuas txoj kev ncaj ncees nce ntxiv los ntawm tsuas yog 0.002 hli; Thaum lub sijhawm zoo sib xws uas tsis muaj laser calibration muaj qhov ua yuam kev ntawm 0.05 mm / m, thiab tom qab 500 teev ntawm kev ua haujlwm tau nce los ntawm 0.008 hli.
Lub coaxiality ntawm cov kev txhawb nqa nkhaus ntawm ob xaus ntawm cov ntsia hlau txhuas yuav tsum tsawg dua lossis sib npaug rau 0.005 hli. Yog hais tias qhov sib txawv sib txawv yog loj heev, nws yuav ua rau cov tawv ntoo ua rau "lo" thaum tig, cuam tshuam rau kev ruaj khov. Ib tus neeg yuav khoom paub txog 30% hloov pauv hauv kev khiav tawm thiab muab cov kev cuam tshuam raug vim yog 0.01mm hauv kev txhawb nqa nkhaus.
2. Preload Hloov Kho: Sib Ntsuas "Rigidity" thiab "hnav"
Siab - precision pob ntsia hlauS Yuav tsum tau preload los tshem tawm cov kev tshem tawm Axial, nrog cov preload feem ntau teeb tsa ntawm 10% -20% ntawm cov ntsuas cov ntsuas hluav taws xob:
Yog tias preload yog tsawg dhau (<10%), clearance cannot be fully eliminated, and positioning accuracy is easily affected by load fluctuations; in one case, preload was only 5% of the rated load, resulting in repeat positioning accuracy fluctuations of ±0.002mm under variable load conditions.
Kev tiv tauj ntau dhau (> 20%) tuaj yeem sib cheem ntawm cov khoom thiab removerays, yog li ua kom luv rau cov hmoov txhuas kev pabcuam lub neej. Ib tug neeg yuav khoom tau hloov kho mus rau 25% ntawm cov neeg ntsuas kev ntsuas, thiab tom qab 800 teev ntawm kev ua haujlwm, cov hnav ri las sib tw mus rau C4 qib.
Preloing tuaj yeem raug tswj kom haum siv lub zog ntswj lossis cov twj paj nruag preloto kom paub tseeb tias muaj kev sib txawv ntawm lossis sib npaug ± 5%.
Thib peb, Kev Siv thiab Kev Txij Nkawm: Kev Saib Xyuas Kev Tshawb Fawb kom txuas ntxiv lub voj voog ruaj khov
Lubrication Kev Tswj: tswj "txuas ntxiv lubrication"
Ib tug neeg siv khoom tsis ua tiav ntub rau lub sijhawm, ua rau kev sib txhuam coefficient ntawm lub ntsia hlau nce los ntawm kev ua haujlwm kub, thiab ob lub nrawm nrawm nyob rau hauv precision tsis zoo. Tsis tas li ntawd, roj nplua nrog qib kev nyiam huv ntawm NAS 8 lossis siab dua yuav tsum raug xaiv los tiv thaiv kom tsis txhob muaj cov kab mob sib koom tes thiab ua rau hnav tsis zoo.
Plaub, kev tswj hwm ib puag ncig: Ua kom zoo ua haujlwm thiab txo cov kev cuam tshuam sab nraud sab nraud
1. Tswj kub: Zam "kub deformation"
Siab - precision pob ntsia hlaus yog rhiab rau qhov kub. Kev hloov pauv kub nyob hauv ib puag ncig ua haujlwm yuav tsum tau tswj tsis pub dhau 5 tus kheej kom tiv thaiv kom tsis txhob thermal expansion thiab condaction, uas tuaj yeem cuam tshuam qhov tseeb.
2. Kev Txhim Kho: cais tawm "sab nraud vibrations"
Qhov kev co qhov hluav taws xob ntawm cov khoom siv hauv paus yuav tsum yog tsawg dua lossis sib npaug rau 0.01 hli. Yog tias cov cuab yeej siv nyob rau hauv lub siab- kev co ib puag ncig (xws li cov ntaub qhwv hauv qab (xws li cov ntaub thaiv npog hauv qab no (xws li cov phuam da dej 0.005 hli.
Kev ntsuas kev ntsuas precision kev ntsuas kev paub dhau los ntawm kev ua si ntsia hlau ua kom raug kev cuam tshuam ntawm 0.004 lub hauv paus kev co lub hauv paus amplitude ntawm 0.02 hli. Tom qab kev txhim kho cov kev co damping ntaub, cov kev co cov ntaub qhwv cov ntaub qhwv qis rau 0.003 hli, thiab qhov chaw ua hauj lwm raug hloov kho kom tsis pub dhau 0.001 hli.
Lub ntsiab
Ua kom muaj kev ruaj khov ntawmsiab - precision pob ntsia hlaus tsis yog "ib {{- kev xaiv lubrickment" ntawm ib puag ncig tswj hwm, thiab kev tu kom zoo thaum ib puag ncig kev saib xyuas, thiab tswj cov txheej txheem kom nruj, thiab tswj xyuas ib puag ncig thaum ib puag ncig kev saib xyuas, thiab tswj kom zoo thaum ib puag ncig kev saib xyuas, thiab tswj cov txheej txheem kom nruj, thiab tswj kom muaj kev tswj hwm thaum ib puag ncig, thiab tswj cov txheej txheem tsim nyog thaum ib puag ncig kev saib xyuas, thiab tswj cov txheej txheem tsim nyog thaum ib puag ncig kev saib xyuas, thiab tswj cov txheej txheem kom nruj, thiab tswj kom muaj kev tswj hwm thaum ib puag ncig, thiab tswj cov txheej txheem kom zoo thaum ib puag ncig, thiab tswj cov txheej txheem tsim nyog thaum ib puag ncig kev saib xyuas, thiab tswj cov txheej txheem kom nruj thaum ib puag ncig, thiab tswj cov txheej txheem kom nruj, thiab tswj cov txheej txheem kom nruj, thiab tswj cov txheej txheem kom nruj, thiab tswj kom muaj qhov kub thiab txias Meej tswj ntawm txhua theem yog qhov tseem ceeb kom ntseeg tau tiassiab - precision pob ntsia hlauS Saib xyuas qhov kev ua tau zoo nyob rau lub sijhawm ntev, zam kev pov tseg ntawm "siab {{Precision ua kom tab sis qis {1} pre} precision siv."
Tiv Tauj Peb
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