Q.Whyismeasuringofbalancingspeedofthecomponentvery
Importantinabalancingmachine?
A.Balancingmachineisanindustrialmachine.Themachineis
Locatedinafactoryenvironmentalongtheprocessline. Manytypes
Ofindustrialnoiseselectrical, mechanisch, magneticwillexistinan
Industrialenvironment. Besidesthisbalancingmachinehasdrive
Elementslikemotors, Riemenscheiben, beltswhichalsorotatealongwiththe
Komponente. Thecomponentismountedonrollers, androllersalso
Rotatealongwiththecomponent. Thetransducerswillpickup
Signalsfromallrotatingelements. Theelectronicsofthebalancing
machineneedsareferencesignaltoextracttheunbalancesignalof
Thecomponentbeingbalanced. Thespeedsignalofthecomponent
Beingbalancedprovidesthereferenceforsignalextraction.
Inolderstroboscopemachines, itcanbeobservedthatthe
Unbalancelocationwillstartshifting/oscillatingoverawideangle
Whenbalancingisdone. Inmodernmachineswithphaselockloop,
Theshiftofangleisreducedtoinsignificantlevels.
Q.Whydoweneedmultispeedbalancingmachines?
A.Multispeedbalancingmachinesarenormallybigsizemachines
Andmachineswhichhandlearangeofjobs. Incasethecomponent
isamassproducedcomponentwithpredictablelevelsof
Unwucht, singlespeedmachinescanbetunedtobalancethe
Componentsfasterandwellwithinthetolerance. Butinheavy
Komponenten, Thelevelofunbalancemaynotbeknowninitially. Es
maybehazardousfromthepointofsafetytodirectlyrunthe
Componentattherequiredbalancingspeed. Ja, heavycomponents
Arerunatlowerspeeds, Initialbalancingisdone. Furtherbalancing
isdoneathigherspeedstillthedesiredlevelofaccuracyis
Erreicht.
Q.DoweneedtoputDynamicBalancingMachinesonafoundation?
A.Balancingmachineisanindustrialmachineusedtomeasure
Vibrationandcomputetheresidualunbalance.ModernHardBearing
BalancingMachinesareforcemeasuring.ItisessentialthattheMachine
donotvibrateorshakeforcorrectmeasurementofunbalanceamountand
PhaseAngle.
Formorepreciseresultsitisrequiredtomountthemachinesfirmlyonanindustrialfloor.
Q.Whatisunbalancereductionratio?
A.Balancingmachineinstrumentationindicatesthelevelofunbalanceon
Thecomponentbeingbalanced. Agoodmachinecanindicateavalueand
whenacorrectionequivalenttothevalueshownisexecutedthenextresultantresidual
unbalanceshouldbebelow90 - 95 % Ofthefirstindicatedvalue.
Ballastgewichte, Onthefirstrun, ifthemachinehasshownsay50gramatagivenlocation.
Whena50gramweightisaddedatthatlocationandaresidualunbalancereadingtaken,
incasethemachineindicatesavalueof5gramandbelow, thenitissaidthatthemachine
ishavinganunbalancereductionratioofabout90 %.
FormoredetailsrefertotheISOstandards1940, 2953etc.
Q.Whatisplaneseparation,crosseffect,influence?
A.Intwoplanedynamicbalancingmachines,theresultsareindicatedintwo
Correctionplanes. Whenacorrectionismadeononeplane, theeffectofthe
Unbalancecompensationonthesecondplane, isdefinedasplaneseparation
Orcrosseffectorinfluence. In der Regel theplaneseparationwillbewellbelow3 %.
Incomputerbasedhardbearingdynamicbalancingmachines, theplane
Separationisachievedmathematically. Souserstendtogetbetter
levelsofplaneseparationoncomputerizedhardbearingdynamic
balancingmachinesandthatisnotthecasewithsoftbearing
machineswhereinunbalancesignalsareelectronicallymixedand
Modulatedforindicatingtheresults.
