Lub voj voog tuaj yeem siv ua ke nrog cov kws tshaj lijncig saws. Yog tias nws yog siv rau cov hlau ncig saws uas tsim los ntawm cov tuam txhab suav nrog SHALL pom cov hniav, lub voj voog saw hniav yuav muab kev ua si tag nrho rau lawv cov txiaj ntsig. Circular saw hniav yog ib qho cuab yeej txiav, uas muaj dav hauv kev ua ntoo thiab txiav hlau. Thaum lub sij hawm siv lub voj voog saw hniav, cov indexes los yog yam uas cuam tshuam rau nws stability thiab kev ua tau zoo muaj xws li nyiaj hnav, high-speed khiav stability thiab txiav raug. Lub voj voog saws tau muab faib ua tsib pawg: steel, ultra-thin steel, stainless hlau, txhuas thiab ntoo. Qhov sib txawv ntawm ntau hom saw hniav nyob ntawm cov hniav, cov hniav thiab lub kaum sab xis. Cov hniav ntawm cov hlau txiav thiab ultra-thin steel ncig saw hniav yog nyob rau ntawm xoom lub kaum sab xis, thiab lub voj voog saws siv rau txiav aluminium, stainless hlau thiab ntoo muaj cov hniav ncaj.
Cov txheej txheem ntawm pob zeb diamond ncig pom hniav ua ntau yam tsis yog xim hlau nyuaj thiab nkig, xws li pob zeb, lub pov haum thiab iav, yog txheej txheem kev sib tsoo ceev. Lub pob zeb diamond ncig pom hniav feem ntau ua haujlwm ntawm kev kub ceev, thiab nws txoj kab uas hla mus rau thickness piv yog loj. Yog hais tias ib qho excitation zaus nyob ze rau nws lub ntuj zaus ntawm ib qho kev txiav txim nyob rau hauv cov txheej txheem sawing, cov saw hniav yuav ua rau resonance, yog li cov teeb meem kev vibration hauv cov txheej txheem sawing feem ntau tshwm sim. Thaum lub pob zeb diamond ncig pom hniav resonates, lub amplitude nce sharply, uas yuav tsis tau tsuas yog tsim ib tug ntau ntawm cov suab nrov, tab sis kuj ua rau kev puas tsuaj ntawm cov ua hauj lwm workpiece, thiab txawm ua rau cov saw hniav deform thiab lub taub hau cutter tawg, ua rau muaj xwm txheej. Yog li ntawd, nws yog ib qho tsim nyog los xyuas kom meej tias cov qauv saw hniav tsim tsis muaj resonance nrog qhov tsim nyog. Kev soj ntsuam kev ntseeg tau ntawm qhov zaus ntawm pob zeb diamond ncig saw hniav yog cov ntsiab lus tshawb fawb tseem ceeb.
Thaum lub sij hawm siv cov ntaub ntawv ncig, qhov chaw sab nraud thiab sab nraud quab yuam muaj deformation los ntawm cov qauv ntawm cov khoom thaum nws yog siv nyob rau hauv kub, kub ceev thiab lwm yam kev mob. Lub peev xwm ntawm cov khoom los tiv thaiv qhov deformation yog stability. Nyob rau hauv qhov kev txiav txim ntawm kev ntxhov siab, qhov nyuaj dua nws yog deform, nws ruaj khov dua. Thaum lub load sab nraud yog nyob rau hauv ib tug tej yam ntau yam, nyob rau hauv qhov kev txiav txim ntawm lub sab nraud load, lub staggered pieces yuav deviate los ntawm lub equilibrium lub xeev. Txawm li cas los xij, thaum lub load sab nraud raug tshem tawm, daim ntaub ntawv yuav rov qab mus rau lub xeev thawj zaug, yog li nws tau hais tias cov ntaub ntawv daim ntawv ruaj khov. Thaum lub load sab nraud tshaj qhov no, thiab thaum lub load sab nraud raug tshem tawm, lub nti tsis tuaj yeem rov qab mus rau nws lub xeev thawj zaug, nws tau hais tias nti staggering tsis ruaj khov.
Qhov tshwm sim uas cov tswv cuab poob lub peev xwm los tswj kom muaj kev sib npaug ruaj khov yog hu ua instability lossis buckling. Muaj ob txoj hauv kev tsis ruaj khov ntawm cov ntawv nyiaj puag ncig:
Ib qho yog instability nyob rau hauv ib qho tseem ceeb load, uas yog, buckling tshwm sim los ntawm sab nraud quab yuam los yog load tshaj cov khoom nws tus kheej tsis kam txwv. Kev nruj yog qhov kev sib raug zoo ntawm cov khoom siv thiab cov deformation uas tshwm sim los ntawm kev thauj khoom. Nws tuaj yeem pom tau tias qhov static dabtsi yog khoov tsis ruaj khov yog feem ntau cuam tshuam nrog kev nruj ntawm cov ntaub ntawv ncig.
Qhov thib ob yog qhov tsis ruaj khov ntawm qhov tseem ceeb ceev. Thaum lub rotating ceev ntawm daim ntawv cov ntaub ntawv mus txog qhov tseem ceeb ceev ntawm cov khoom nws tus kheej, cov ntaub ntawv qauv hloov heev, ua rau lub deterioration los yog hloov ntawm nws tus kheej kev ua tau zoo. Raws li kev tshawb fawb cuam tshuam, kev sib hloov ceev tsis ruaj khov ntawm wafer feem ntau cuam tshuam rau nws tus kheej cov qauv, kev ntxhov siab thiab qhov chaw sab nraud. Cov qauv ntawm tus kheej feem ntau suav nrog cov tuab thiab txoj kab uas hla ntawm cov ntawv nyiaj, cov kev ntxhov siab feem ntau suav nrog kev sib cais kev ntxhov siab, kev ntxhov siab thermal thiab tensile kev ntxhov siab, thiab ib puag ncig sab nraud feem ntau suav nrog lubrication tej yam kev mob, kub kub thiab txiav cov hlau lead tsis thiab configurations.
Woodworking ncig saw hniav yog ib qho cuab yeej yooj yim rau kev ua ntoo. Nws muaj qhov zoo ntawm kev ua haujlwm siab, siv yooj yim, yooj yim txij nkawm, yooj yim txav, thiab lwm yam. Nws suav txog 30 feem pua ~ 40 feem pua ntawm tag nrho cov khoom siv ntoo. Cov koom haum tshawb fawb tseem ceeb hauv tsev thiab txawv teb chaws tseem ceeb heev rau kev tshawb fawb ntawm woodworking ncig saw hniav. Txo nws cov tuab thiab ua kom nws ruaj khov tau lees paub tias yog txoj hauv kev zoo tshaj plaws los txhim kho kev siv cov khoom siv ntoo hauv tsev thiab txawv teb chaws. Yog li ntawd, ultra-thin woodworking ncig saw hniav yog ntau thiab ntau nrov nyob rau hauv kev ua lag luam thiab dav siv nyob rau hauv cov ntoo ua teb.
Lub ntsiab yam tseem ceeb cuam tshuam rau kev ua haujlwm ntawm woodworking ncig saw hniav muaj xws li centrifugal kev nyuaj siab generated los ntawm nws cov high-speed rotation thiab thermal stress generated nyob rau hauv cov txheej txheem txiav. Nrog rau qhov nce ntxiv ntawm qhov sib txawv ntawm qhov sib txawv ntawm cov ntug sab nrauv ntawm lub voj voog saw hniav thiab lub chuck, tangential compressive kev ntxhov siab tsim los ntawm thermal stress ntawm sab nrauv ntawm woodworking ncig saw hniav yuav nce ntxiv, maj mam dhau ntawm tangential. tensile stress generated los ntawm centrifugal kev nyuaj siab nyob rau sab ntug ntawm lub saw hniav, ua rau tag nrho cov tangential kev nyuaj siab nyob rau hauv lub sab ntug ntawm lub woodworking ncig saw hniav tam sim no lub xeev ntawm compressive kev nyuaj siab. Qhov no yuav ua rau buckling deformation thiab instability ntawm sab ntug ntawm sawb nyob rau hauv qhov kev txiav txim ntawm ib tug me me transverse quab yuam, ua rau muaj teeb meem xws li txo sawing raug thiab machining nto zoo, nce sawing txoj kev poob, ntxiv intensified txiav tshav kub, thiab shortened. hniav life. Cov teeb meem no dhau los ua qhov tseem ceeb dua nrog cov thinning ntawm woodworking ncig saw hniav, uas ua rau muaj teeb meem loj rau kev tsim, siv thiab tu ntawm ultra-thin woodworking ncig saw hniav. Vim li no, txoj kev pom zoo feem ntau yog los ua kev kho mob tensioning ntawm woodworking ncig saw hniav, uas yog, los ntawm txhua yam los yog lub cev txhais tau tias, ua rau thaj tsam ntawm lub saw hniav tsim ib tug tej yam degree ntawm yas deformation, thiab ces qhia ib tug. prestressed teb nrog tus nqi tsim nyog thiab tsim nyog tis nyob rau hauv lub saw hniav kom them rau qhov tsis zoo tej thermal stress generated los ntawm woodworking ncig saw hniav nyob rau hauv cov txheej txheem txiav, thiaj li mus txhim kho stability thiab txiav zoo ntawm cov saw hniav.
