Q。Whyismeasuringofbalancingspeedofthecomponentvery
importantinabalancingmachine?
A.Balancingmachineisanindustrialmachine.Themachineis
locatedinafactoryenvironmentalongtheprocessline。ここでは
ofindustrialnoiseselectrical、機械、magneticwillexistinan
industrialenvironment。Besidesthisbalancingmachinehasdrive
elementslikemotors、プーリー、beltswhichalsorotatealongwiththe
コンポーネント。Thecomponentismountedonrollers、androllersalso
rotatealongwiththecomponent。Thetransducerswillpickup
signalsfromallrotatingelements。Theelectronicsofthebalancing
machineneedsareferencesignaltoextracttheunbalancesignalof
thecomponentbeingbalanced。Thespeedsignalofthecomponent
beingbalancedprovidesthereferenceforsignalextraction。
Inolderstroboscopemachines、itcanbeobservedthatthe
unbalancelocationwillstartshifting/oscillatingoverawideangle
whenbalancingisdone。Inmodernmachineswithphaselockloop、
theshiftofangleisreducedtoinsignificantlevels。
Q.Whydoweneedmultispeedbalancingmachines?
A.Multispeedbalancingmachinesarenormallybigsizemachines
andmachineswhichhandlearangeofjobs。Incasethecomponent
isamassproducedcomponentwithpredictablelevelsof
アンバランス、singlespeedmachinescanbetunedtobalancethe
componentsfasterandwellwithinthetolerance。Butinheavy
コンポーネント、thelevelofunbalancemaynotbeknowninitially。それ
maybehazardousfromthepointofsafetytodirectlyrunthe
componentattherequiredbalancingspeed。Heavycomponents
arerunatlowerspeeds、initialbalancingisdone。Furtherbalancing
isdoneathigherspeedstillthedesiredlevelofaccuracyis
達成しました。
Q.DoweneedtoputDynamicBalancingMachinesonafoundation?
A.Balancingmachineisanindustrialmachineusedtomeasure
Vibrationandcomputetheresidualunbalance.ModernHardBearing
BalancingMachinesareforcemeasuring.ItisessentialthattheMachine
donotvibrateorshakeforcorrectmeasurementofunbalanceamountand
phaseangle。
Formorepreciseresultsitisrequiredtomountthemachinesfirmlyonanindustrialfloor。
Q.Whatisunbalancereductionratio?
A.Balancingmachineinstrumentationindicatesthelevelofunbalanceon
thecomponentbeingbalanced。Agoodmachinecanindicateavalueand
whenacorrectionequivalenttothevalueshownisexecutedthenextresultantresidual
unbalanceshouldbebelow90-95 %ofthefirstindicatedvalue。
例えば、onthefirstrun、ifthemachinehasshownsay50gramatagivenlocation。
Whena50gramweightisaddedatthatlocationandaresidualunbalancereadingtaken、
incasethemachineindicatesavalueof5gramandbelow、thenitissaidthatthemachine
ishavinganunbalancereductionratioofabout90%。
FormoredetailsrefertotheISOstandards1940、2953etc。
Q.Whatisplaneseparation,crosseffect,influence?
A.Intwoplanedynamicbalancingmachines,theresultsareindicatedintwo
correctionplanes。Whenacorrectionismadeononeplane、theeffectofthe
unbalancecompensationonthesecondplane、isdefinedasplaneseparation
orcrosseffectorinfluence。通常は、theplaneseparationwillbewellbelow3%。
Incomputerbasedhardbearingdynamicbalancingmachines 面内
separationisachievedmathematically。Souserstendtogetbetter
levelsofplaneseparationoncomputerizedhardbearingdynamic
balancingmachinesandthatisnotthecasewithsoftbearing
machineswhereinunbalancesignalsareelectronicallymixedand
modulatedforindicatingtheresults。
