Yuav ua li cas kuaj tau lub Platen uas muaj me ntsis concave nto profile tom qab kev sib tsoo?

Qee lub sij hawm, cov cua sov hauv av tshiab ntawm lub phaj saum npoo yuav nthuav tawm qhov kev xav tsis thoob hauv nruab nrab - ib qho zoo nkauj, tsis cuam tshuam concave, uas pom tom qab machining. Nws tsis yog ib qho kev xav geometry, tab sis ib qho kev sib tsoo cov khoom qub. Cov polishing saum npoo yuav zoo, tab sis qhov tsis zoo ntawm qhov tsis sib xws tuaj yeem ua rau tag nrho cov flatness tsis kam rau siab thiab cuam tshuam kev sib cuag nrog cov pwm lossis cov khoom ua haujlwm, ua rau cov txheej txheem qis qis.

Kev kuaj mob ntawm qhov chaw concave ntawm kev sib tsoo platen feem ntau yog hais txog kev ntxhov siab thiab teeb meem cuam tshuam es tsis yog qhov yuam kev hauv cov txheej txheem txheej txheej saum npoo ib se.

Concave flatness defect qhia
Kev txheeb xyuas ntawm flatness feem ntau yog ua los ntawm:

Nto phaj, precision

Choj lossis cheb caj npab dial qhia

High daws teeb meem daim ntawv qhia nrog laser interferometry

Concave profile muaj:

Nruab nrab ntawm platen qis ces ntug

Smooth curvature es tsis txhob localized deformation

Kev ntsuas tsis tu ncua ntawm ntau txoj hauv kev tshuaj xyuas

Qhov geometry no nyiam ua haujlwm tsis yog - tiaj tus, tab sis feem ntau tshwm sim deceptively uniform nyob rau hauv tiav zoo.

Hauv paus Ua Mechanism hauv Nto Sib Tsoo
Kev sib tsoo nto yog cov txheej txheem tshem tawm cov khoom, nrog lub log sib tsoo, nyob rau hauv kev tswj kev sib cuag. Txawm li cas los xij qhov kawg geometry yog nyob ntawm seb lub platen tuav thiab txwv thaum lub sij hawm milling li cas.

Sib nqus Chuck Distortion
Thaum lub steel platen yog clamped ntawm ib tug sib nqus chuck, cov teebmeem hauv qab no yuav tshwm sim:

Lub zog sib nqus rub lub platen kom tag nrho kev sib cuag nrog chuck nto

Tej yam ntuj tsim khoov lossis kev ntxhov siab sab hauv yog ncaj nraim mus ib ntus

Qhov kev sib tsoo ua rau muaj qhov chaw tiaj tus tsuas yog siv lub zog siv.

Thaum lub magnetic teb raug rho tawm lub platen rov qab mus rau nws thawj theem ntawm kev ntxhov siab.

Lub grinder tsim ib tug zoo meej flatness ntawm lub caij nplooj ntoos hlav khaws cia nyob rau hauv nruj, thiab thaum lub nro raug tshem tawm lub caij nplooj ntoos hlav thiab lub flatness khoov ua ke.

Qhov no ua rau lub concave nto profile.

Edges Spark-Tawm Tsis txaus
Lwm qhov teeb meem uas muaj peev xwm tuaj yeem ua tsis tiav "txias- tawm" thaum sib tsoo.

Yog tias qhov kawg uas tsis yog - qhov kev nce qib ntxiv tsis txhob txiav nws:

Ntug cheeb tsam yuav tsis ua tiav kev ruaj ntseg

Lub log deflection yuav tsis raug kho.

Cov teebmeem thermal thiab elastic rov qab tuaj yeem nyob twj ywm

Qhov no tuaj yeem ua rau kom qhov concavity tom qab unclamping.

Residual Stress nyob rau hauv Platen Material lub luag hauj lwm
Residual tensions hauv steel platens feem ntau yog vim:

Rolling kev ua haujlwm

Vuam ua haujlwm

Ua ntej -machining cov kauj ruam

Tsim cov thermal gradients

Yog tias cov kev ntxhov siab no tsis tau daws cov khoom siv yuav cuam tshuam rau kev tshem tawm cov kev txwv sab nraud.

Lub deformation feem ntau yog maj mam thiab elastic, es tsis yog yas, xws li hais tias nws muab maj curvature es tsis mob heev distortion.

Concavity Diagnostic Txhais
Lub concave nto tom qab sib tsoo txhais tau hais tias feem ntau:

Residual stress nyob rau hauv lub platen lub cev

Overdependence ntawm Sib Nqus Clamping hauv Machining

Tsis txaus siab stabilization ua ntej sib tsoo

Elastic rebound tom qab tshem tawm cov fixture

Nws yog ib qho tsis tshua muaj lub log ntshiab coj tshwm sim thiab yuav tsum tsis txhob raug suav tias yog qhov teeb meem kev tsim khoom ntshiab.

Kho Kev Nyuaj Siab -Tsev Kho Mob
Kev kho tas mus li suav nrog kev txo qis kev ntxhov siab thiab rov ua dua -machining.

Thermal stress relief cycle
Ib txoj hauv kev tswj qhov cub feem ntau yog siv:

Cua sov kom txo qhov kev ntxhov siab kub tshwj xeeb rau cov khoom siv

Soaking rau equalizing internal tensions rau ib lub sij hawm muab

Txias qeeb heev nyob rau lub sijhawm teev

Qhov no tso cai rau lub zog sab hauv kom rov faib thiab txo qis.

Txheej txheem ntawm Tswj Re- Sib tsoo
Thaum txo kev ntxhov siab, kev sib tsoo yuav tsum tau ua nyob rau hauv cov xwm txheej txo qis.

Cov kev coj ua zoo tshaj plaws:

Tsawg kawg magnetic clamping quab yuam

Kev siv shimming lossis thaiv kev txhawb nqa

Cov txheej txheem tshem tawm cov khoom nce ntxiv

Flatness check, tsis tu ncua

Txo kev txwv yuav txo qis kev rov ua dua ntawm elastic distortion thaum lub tshuab ua haujlwm.

Rework txheej txheem validation
Kev tshuaj xyuas zaum kawg yuav tsum tau ua dua los ntawm kev siv:

Nto phaj, precision

Dial gauge taug kev ntsuas

xaiv daim ntawv qhia rau laser interferometer

Kev lees txais cov qauv feem ntau yog raws li tag nrho cov lus qhia tau hais tseg thiab qhov txawv ntawm qhov nruab nrab mus rau ntug.

Common Risks ntawm Misdiagnoses
Muaj ntau qhov xwm txheej tuaj yeem ua yuam kev rau kev sib tsoo:

Thermal distortion ntawm lub tshuab ua haujlwm

Elastic deformation los ntawm fixture

Cov khoom siv nco zoo.

Kev ntxhov siab tsis txaus hauv kev ua ntej

Kev kho kom raug yuav tsis daws qhov laj thawj tiag tiag yam tsis muaj kev kuaj mob dav dav.

Xaus:
Lub phaj phaj vim kev sib tsoo yog kom meej meej ib qho teeb meem kev sib xyaw ua ke thiab thermal stress es tsis yog ib qho yooj yim machining yuam kev. Lub concave nto tom qab platen kuaj mob ntawm kev sib tsoo feem ntau qhia tau hais tias cov khoom yog machined nyob rau hauv kev tswj thiab ces tso tawm xws li cov nro nro ua rau lub geometry yuav tsum tau reshaped.

Qhov kev kho mus tas li yog tau los ntawm kev rov ua kom cov khoom siv rau qhov tsis muaj kev ntxhov siab los ntawm kev tswj lub cub tawg ua ntej rov pib dua rau lub tshuab grinder. Yog hais tias ib tug tiag tiag xav tau ib tug ca platen, nws tsis yog tiav los ntawm kev quab yuam, tab sis los ntawm ib tug hlau qauv uas yog tag nrho so, thiab stabilized, thiab tsis muaj kev ntxhov siab nyob rau hauv lub imbalance.