"Pob ntsia hlau txhim kho pitting ntawm txoj kev sib tw tom qab rau lub hlis ntawm kev ua haujlwm, ua rau qhov tseeb ntawm qhov poob qis los ntawm 0.02mm?" "Sudden qaug dab peg thaum lub sijhawm siab -kev ua haujlwm ceev ua rau cov khoom siv poob qis tshaj 50,000 yuan hauv kev poob?"
Raws li ib tug engineer nrog 15 xyoo ntawm kev paub nyob rau hauv precision kis tau tus mob, xws li tsis ua hauj lwm nyob rau hauv lub pob ntsia hlau sib dhos yog tag nrho cov dhau lawm. Lub hauv paus ua rau feem ntau yog nyob rau hauv lub sudden seizu Sudden jamming nyob rau hauv siab -ceev tej yam kev mob ua rau cov khoom downtime poob ntau tshaj 50,000 yuan?" Raws li ib tug engineer nrog 15 xyoo ntawm kev paub nyob rau hauv precision kis tau tus mob, xws li pob ntsia hlau los ua ke tsis ua hauj lwm yog commonplace. Qhov tseem ceeb qhov teeb meem feem ntau stems los ntawm tsis txaus kev nkag siab ntawm tsis ua hauj lwm mechanisms, influencing; Kev sib kis, kev ua haujlwm ntawm lub pob ntsia hlau sib dhos ncaj qha txiav txim siab cov khoom siv qhov tseeb, kev ua haujlwm ruaj khov, thiab kev tsim khoom hauv kev muaj tiag, pob ntsia hlau tsis ua haujlwm feem ntau tshwm sim los ntawm ntau yam sib tshooj: lubrication tsis ua haujlwm, kev sib kis, kev sib txawv ntawm kev ua haujlwm, thiab kev ua haujlwm tsis raug cai, kev tiv thaiv kev tiv thaiv ntau dua 11}, thiab kev ua haujlwm zoo. post- tsis ua hauj lwm teb " yog qhov tseem ceeb. Niaj hnub no, peb yuav rhuav tshem cov ntsiab lus tseem ceeb rau kev tiv thaiv lub pob ntsia hlau tsis ua haujlwm los ntawm yim- cov kauj ruam ua haujlwm, txiav tawm txhua theem ntawm kev xaiv mus rau kev saib xyuas los daws qhov mob ntawm "tsis tu ncua, kev ua neej luv, thiab qhov tseeb drift."
Kauj Ruam 1: 6 Cov Tswv Yim Kom Tiv ThaivPob Screw AssemblyUa tsis tiav
Txhais lub ntsiab lus tseem ceeb ntawm Pob Ntsia Hlau Failure-Ua ntej nkag siab "Kev ua tsis tiav thiab cov txheej txheem"
Txhawm rau kom tsis txhob muaj lub pob ntsia hlau sib dhos tsis ua haujlwm, qhia meej meej nws cov ntsiab lus tseem ceeb, hom kev lag luam, thiab cov txheej txheem kev lag luam kom tsis txhob "kev txiav txim siab ntxov- theem tsis ua tiav" uas ua rau poob qis:
Pob ntsia hlau sib dhos tsis ua haujlwm yog hais txog lub xeev qhov kev ntsuas kev ua haujlwm tseem ceeb -xws li kev kis tau tus mob, lub peev xwm thauj khoom, thiab kev ua haujlwm ruaj khov- dhau qhov kev tso cai txwv vim yog yam xws li khoom siv, kev tsim khoom, kev teeb tsa, kev ua haujlwm, lossis kev saib xyuas, yog li ua tsis tau raws li cov khoom siv ua haujlwm.Core tsis ua hauj lwm hom muaj xws li:hnav tsis ua haujlwm, qaug zog tsis ua haujlwm, corrosion tsis ua haujlwm, kev sib dhos tsis ua haujlwm, thiab lubrication tsis ua haujlwm.Cov kev ntsuas tseem ceeb muaj xws li:Qhov chaw qhov tseeb sib txawv, axial clearance, kev ua haujlwm tsis kam, thiab qhov kev puas tsuaj loj heev.
Cov ntsiab lus tseem ceeb rau siab - zaus tsis ua hauj lwm scenarios:
- High-speed/high-frequency conditions (speed >3000r/min, >1500 txhua hnub reciprocations):Prone rau qaug zog pitting. Lub pob ntsia hlau hauv lub Hoobkas hluav taws xob tau nthuav tawm pitting ntawm kev sib tw hauv 3 lub hlis vim muaj kev ua haujlwm siab -, nrog rau qhov tseeb qhov sib txawv ntawm qhov ncav cuag 0.015mm;
- Ib puag ncig ntub thiab plua plav:Yooj yim rau corrosion tsis ua hauj lwm. Cov khoom siv sab nraum zoov pob ntsia hlau tsis muaj kev tiv thaiv tsim nto xeb nyob rau hauv 6 lub hlis, nrog rau kev ua haujlwm tsis kam nce ntawm 15N txog 35N;
- Heavy-load tej yam kev mob (load> 85% ntawm cov peev txheej):Yooj yim rau hnav los yog ncej deflection. Ib qho hnyav- lub luag haujlwm lub tshuab cuab yeej pob ntsia hlau ua haujlwm dhau ntawm nws lub peev xwm thauj khoom tau nthuav tawm 0.006mm hnav hauv ib xyoos.
- Cov ntsiab lus tseem ceeb rau kev twv ua tsis tiav:Ua ntej txheeb xyuas "pob ntsia hlau qauv, qib precision, kev ua haujlwm ceev (ceev / thauj khoom / ib puag ncig), thiab cov khoom siv precision," ces tsim cov phiaj xwm kev tiv thaiv tsis ua haujlwm.
Kauj Ruam 2: Cov ntsiab lus tseem ceeb cuam tshuam ntawm Pob Ntsia Hlau Tsis Ua Haujlwm -Kev Ntsuas Kom Zoo rau Kev txo qis
Pob ntsia hlau sib dhos tsis ua haujlwm yog cuam tshuam los ntawm ntau yam. Txheeb xyuas qhov cuam tshuam qhov hnyav thiab qhov ua tsis tiav ntawm txhua yam los tsim cov phiaj xwm txo qis:
- Lubrication Failure (35% cuam tshuam qhov hnyav):
Cov roj tsis txaus lossis tsis raug xaiv ua rau muaj kev sib txhuam qhuav ntawm cov kab sib tw thiab cov pob, ua rau tus nqi hnav los ntawm 5-8 zaug. Ib rooj plaub muaj kev cuam tshuam carbonization ntawm cov qauv roj thaum lub sijhawm ua haujlwm siab, ua rau kev sib tw ntawm 0.005mm / hli. Lub sijhawm lubrication ntev dhau los lossis tsis ua kom cov roj ntxiv hauv cov plua plav ib puag ncig tso cai rau cov kab mob nkag mus rau hauv, ua rau "ua rau hnav" thiab ua kom tsis ua haujlwm.
- Installation Deviation (20% cuam tshuam qhov hnyav):
Lub ntsia hlau- txiv ntseej coaxiality sib txawv tshaj 0.01mm / m ua rau tsis sib xws thaum lub sijhawm ua haujlwm, ua rau muaj kev thauj khoom ntau dhau ntawm txoj kev sib tw thiab ua rau qaug zog tsis ua haujlwm. Kev cuam tshuam los yog kev sib tsoo thaum lub sij hawm teeb tsa tuaj yeem khoov lub hau ntswj lossis kev puas tsuaj rau txoj kev sib tw. Nyob rau hauv ib rooj plaub, kev cuam tshuam kev teeb tsa ua rau cov ntsia hlau ncaj nraim sib txawv ntawm 0.012mm / m, uas ua rau raug kaw tom qab tsuas yog ib hlis ntawm kev ua haujlwm.
- Kev ua haujlwm tsis raug cai hloov kho (15% hnyav):
Failure to select high-speed ball screws (DN value < 100,000) for high-speed applications leads to excessive operating temperatures (>80 degree) thiab roj tsis ua haujlwm. Nyob rau hauv -sizing rau hnyav- load tej yam kev mob uas tsis txaus rated dynamic load ua rau taug qab kev nyuaj siab tshaj cov qauv, txo qaug zog lub neej ntau tshaj 60%.
- Khoom siv thiab kev tsim khoom Precision (5% cuam tshuam qhov hnyav):
Siv cov pa roj carbon zoo tib yam (tsis muaj zog) lossis kev tsim cov khoom siv qis dua C5 qib ua rau tsis txaus deg hardness (HRC <58), tripling hnav tus nqi. Kev sib tsoo ntau dhau ntawm kev sib tw ua rau lub pob tsis sib xws, nce qhov ua tsis tiav thaum ntxov los ntawm 40%.
Kauj Ruam 3: Kev xaiv meej ntawm Pob Ntsia Hlau Rooj Sib Tham -Txo qhov kev pheej hmoo ua tsis tiav ntawm qhov chaw
Xaiv lub pob ntsia hlau uas tsim nyog, qib precision, thiab cov khoom siv sib txuam yog qhov tseem ceeb los tiv thaiv kev ua tsis tiav. Cov hauv paus ntsiab lus tseem ceeb yog "kev ua haujlwm zoo sib xws, ua tiav cov qauv zoo, thiab ua kom cov khoom zoo":
- Precision Qib Xaiv:
High- daim ntawv thov precision (qhov chaw qhov tseeb Tsawg dua lossis sib npaug ntawm 0.005mm / m): Xaiv qib C3 lossis siab dua precision, axial clearance Tsawg dua lossis sib npaug li 0.003mm;
Standard applications:Xaiv C5 qib precision kom ua tau raws li cov kev xav tau ntawm kev sib kis tau yooj yim thaum txo cov nqi.
Kauj Ruam 4: Ua ntej-kev npaj kev teeb tsa-Tswj lub hauv paus rau Kev Tiv Thaiv Tsis Ua Haujlwm
Kev npaj ntawm cov pob ntsia hlau sib dhos thiab qhov chaw mounting ua ntej kev teeb tsa yog qhov tseem ceeb los tiv thaiv kev ua tsis tiav. Cov hauv paus ntsiab lus tseem ceeb yog "kev huv huv, kev ua tau zoo, thiab tsis yog-kev ua kom puas tsuaj":
- Reference Surface Precision Inspection and Repair:
Kev them nyiaj yug puag mounting nto:Tshawb xyuas flatness (Less tshaj los yog sib npaug rau 0.008mm / m) thiab perpendicularity (Less tshaj los yog sib npaug rau 0.01mm / m) siv ib theem thiab dial qhia. Mill los yog grind yog tias tsis kam lees.
Qhia rail thiab ntsia hlau parallelism:Tshawb xyuas qhov sib txawv ntawm qhov sib txawv tsawg dua lossis sib npaug ntawm 0.01mm / m los tiv thaiv kev thauj khoom tsis sib xws thaum ua haujlwm.
Fitting dimension soj ntsuam:Siv lub micrometer los tshuaj xyuas qhov haum qhov ntev ntawm cov ntsia hlau thiab lub nplhaib puab ntawm cov kabmob txhawb nqa, kom ntseeg tau tias qhov cuam tshuam haum yog tswj tsis pub dhau 0.001-0.003mm;
- Ua ntej- cov ntsiab lus kho:
Nyob rau hauv cov xwm txheej precision, ua kev laus laus ntawm cov ntsia hlau kom txo qhov raug drift los ntawm deformation thaum lub sijhawm ua haujlwm tom qab; Ua ntej kev teeb tsa, sib npaug siv cov roj sib xyaw rau hauv txoj kev sib tw, sau 1/2 mus rau 2/3 ntawm qhov ntim ntawm qhov sib tw kom paub meej tias qhov pib lubrication txaus.
Kauj Ruam 5: Cov txheej txheem kev teeb tsa thiab cov txheej txheem sib txuas ua ke- Zam kev pheej hmoo ua tsis tiav ntxiv
Standardized installation thiab kev sib raug zoo yog qhov tseem ceeb rau kev tiv thaiv ntxov ntxov tsis ua hauj lwm ntawm pob ntsia hlau sib dhos. Cov hauv paus ntsiab lus tseem ceeb yog "kev tuav ceev, kev sib raug zoo, thiab kev sib faib quab yuam":
- Installation txheej txheem:
Txhim kho kev txhawb nqa bearings ua ntej:Mount ob qhov kawg kev txhawb nqa bearings, tom qab ntawd siv lub dial taw qhia txhawm rau txheeb xyuas cov radial runout (tsawg dua lossis sib npaug li 0.005mm) kom ruaj khov.
Tom qab ntawv txheeb xyuas cov ntsia hlau-cov lus qhia parallelism (tsawg dua lossis sib npaug li 0.01mm / m).
Nut Fixing:Khaws lub txiv ntoo rau ntawm qhov chaw ua haujlwm. Thaum zawm bolts, siv txoj kev sib npaug thiab nruj nruj nrog torque deviation Tsawg dua lossis sib npaug li ± 5% txhawm rau tiv thaiv deformation ntawm cov txiv ntoo hauv qab load.
Kauj Ruam 6: Cov lus teb tsis ua tiav thaum pib thiab kev saib xyuas - Txo qhov poob qis, ncua lub neej ntev
Thaum kuaj pom cov cim qhia ntxov ntawm kev ua tsis tiav hauv cov pob ntsia hlau sib dhos, ua raws li cov kev ntsuas tiv thaiv kom tsis txhob muaj kev puas tsuaj. Lub hauv paus ntsiab lus tseem ceeb yog "kev kuaj mob kom raug thiab kev tswj xyuas kev tshawb fawb":
- Kev Tshawb Fawb Txog Kev Ua Haujlwm Thaum Ntxov thiab Kev Ua Haujlwm:
Kev hnav me me (hnav Tsawg dua lossis sib npaug ntawm 0.003mm, qhov tseeb sib txawv Tsawg dua lossis sib npaug rau 0.005mm):Ntxuav cov raceways, hloov nrog cov roj sib xws, kho qhov kev sib tw ua kom raug, txhim khu kev tiv thaiv;
- Kev Ua Haujlwm Tsis Txaus Siab:
- Me me pitting ntawm raceways, hnav 0.003-0.005mm:Hu rau cov chaw tsim khoom rau kev sib tsoo kev sib tsoo; rov qab qhov tseeb tshaj 90% ntawm qib qub;
- Txiv ntseej pob hnav/cage puas:Hloov cov txiv ntoo los ua ke kom tsis txhob muaj kev puas tsuaj ntawm cov ntsia hlau raceway;
- Kev Ua Haujlwm Tsis Txaus Siab:
Pitting hnyav rau ntawm txoj kev sib tw, khoov ntsia hlau ncej, qhov chaw tawg: Hloov lub pob ntsia hlau sib dhos tam sim los tiv thaiv cov khoom siv puas tsuaj los ntawm kev siv txuas ntxiv;
Tshaj tawm -Kev Tshawb Fawb Hloov:Tom qab txhim kho cov khoom tshiab, ua tsis muaj -load thiab loaded xeem khiav nrog rau kev soj ntsuam precision kom ua tau raws li qhov yuav tsum tau ua.
Xaus: Kev tiv thaiv tsis ua haujlwm yuav tsum tau kaw-Kev tswj lub voj; Tag Nrho -Txoj Kev Tswj yog qhov tseem ceeb
Tiv thaivpob ntsia hlau sib dhostsis ua hauj lwm hinges ntawm kaw - voj puv - txheej txheem mus kom ze:"Kev xaiv meej + Kev teeb tsa tus qauv + Kev Tiv Thaiv Lubrication Kev Tshawb Fawb + Kev Saib Xyuas Kev Ua Haujlwm Zoo." Qhov no suav nrog ntau- kev sib koom tes sib koom ua ke los txo cov tub ntxhais tsis ua haujlwm tsav tsheb- lubrication tsis ua haujlwm, kev sib kis tsis zoo, kev sib txawv ntawm kev teeb tsa, thiab kev ua haujlwm tsis raug cai hloov kho- kom ruaj khov pob ntsia hlau ua haujlwm.
Feem ntau cov neeg siv kev ntseeg tsis raug suav nrog "ua ntej kev yuav khoom hauv kev saib xyuas," "ua tsis tiav lub luag haujlwm tseem ceeb ntawm lubrication thiab kev tiv thaiv," thiab "kev tshawb nrhiav ncua sij hawm ua rau tsis ua tiav." Hauv kev xyaum, kev siv tag nrho - txheej txheem tswj- txhais tau tias "kev txheeb xyuas qhov tsis txaus ntseeg lub hom phiaj → xaiv cov khoom siv rau kev ua haujlwm zoo → txhim kho thiab ua kom zoo → txhim kho lubrication thiab kev tiv thaiv → niaj hnub saib xyuas thiab ceeb toom ntxov → tam sim ntawd hais txog qhov ua tsis tiav" - tuaj yeem txuas ntxiv pob ntsia hlau 50% kev ua haujlwm ntawm lub sijhawm ua haujlwm.
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