Q.Whatarethecriteriaforselectionofenddriven,beltdriven,self
enjin disel, verticalbalancingmachines?
A.Inadynamicbalancingrequirement,theaccuracyofthe
componentandtheeaseofbalancingdecidethemosttechno
economicalsolutioninselectingthebalancingmachineanddrives.
Massproducedcomponentswhicharediskinshape, andsmallin
sizeareinvariablybalancedonaverticalmachinewithbuiltin
correctionequipments. Highprecisionjobsrequiringfinelevelsof
balanceliketurbines, turbochargers, arebalancedonbeltdriven
machine.Componentslikefansandheavyrotorswhichneed
considerablepowerforaccelerationanddecelerationaredriven
throughuniversalshaftsonabalancingmachine. Veryhighspeed
componentslikeautomobileturbochargerswhereintheerror
inducedbydriveelementsarenotacceptablearebalancedby
usingtheirownreallifesimulatedpowersourceslikecompressed
dingin. Theadvantageofthebeltdrivearrangementoveruniversal
shaftdrivenmachineisthetimetofixtheadoptersonthe
componentissavedanderrorsduetoadoptersontheresidual
unbalanceareavoided.
Q.Whataretheunitsofunbalance?
A.Theunitsofunbalancearetheproduct (darab) daripada
permittedunbalanceweightattheradiusofcorrection.
Misalnya
XgramofunbalanceatYmillimeterradiusisdefinedasXYmmgof
tidak seimbang. Basedonthepracticetheunitscanbein
Metergram
Ounceinches
Graminches
Millimetergram
Millimetermilligram
Ortheproductofalineardistanceunitandaweightunit.The
relationshipbetweenalltheunitsisstraightforwardandcanbe
transferredforoperationalconvenience
Q.Whatarethecriteriaforselectionofenddriven,beltdriven,self
enjin disel, verticalbalancingmachines?
A.Inadynamicbalancingrequirement,theaccuracyofthe
componentandtheeaseofbalancingdecidethemosttechno
economicalsolutioninselectingthebalancingmachineanddrives.
Massproducedcomponentswhicharediskinshape, andsmallin
sizeareinvariablybalancedonaverticalmachinewithbuiltin
correctionequipments. Highprecisionjobsrequiringfinelevelsof
balanceliketurbines, turbochargers, arebalancedonbeltdriven
machine.Componentslikefansandheavyrotorswhichneed
considerablepowerforaccelerationanddecelerationaredriven
throughuniversalshaftsonabalancingmachine. Veryhighspeed
componentslikeautomobileturbochargerswhereintheerror
inducedbydriveelementsarenotacceptablearebalancedby
usingtheirownreallifesimulatedpowersourceslikecompressed
dingin. Theadvantageofthebeltdrivearrangementoveruniversal
shaftdrivenmachineisthetimetofixtheadoptersonthe
componentissavedanderrorsduetoadoptersontheresidual
unbalanceareavoided.
Q.Wehavebalancedafanonthebalancingmachineandwhenwe
testonastaticbalancingstandweseeheavyspotinthefan?
A.Inthepictureaboveadynamicbalancingmachinemeasuresthe
resultantofthethreeresultantunbalanceforcesnamelythestatic
komponen“S“, andthecouplecomponent“+ Cand-C”Dalam
valuescanberecordedbyusingtheprogramtwoplanemeasuring
andstatic/couplemeasuringsections.
WhenusingamachineyoucompensateallunbalancesieS + C-C.
Butwhencheckonastaticbalancingstandthecoupleportionun
balancedonotgetcompensated,andonlySiscompensated.So
youhavethehighspotsettlingatthebottomonastaticbalancing
standforcomponentsbalancedonamachine. Inactualservice
conditionswhenthedynamiceffectofallthreeforcesareactingthe
fansbalancedonamachineforbothStaticandCouplewillbe
licin.
