Q。InDynamicBalancingdoweneedtosupportthecomponentonthe
machineinthesamelocationasinassembly?
A.Yesitisnecessarytosupportthecomponentbeingbalancedatthe
sameornearaboutofthebearingsupportsforproperresults。
Dynamicbalancingisaforcebalancingandcouplebalancing
Operation.Thecoupleistheproductofforceandthedistanceto
thepointofsupport。Soitisessentialthatthereallifeconditionsare
replicatedonthebalancingmachines。
Q。InDynamicBalancingMachinedoweneedtorunthecomponent
beingbalancedtooperatingspeed/servicespeed?
A.Usingadynamicbalancingmachinewemeasuretheunbalancein
theunitsofgrammillimeter。Thequalityandsensitivityofbalancing
Machinedecidesthespeedatwhichyoucanbalancea
Component.InmodernhardBearingdynamicbalancingMachines
Engineersareabletomeasuretheunbalanceatrelativelylower
Speeds.Theunbalancecorrectionseffectedarevalidformostof
Theservicespeedrequirementsofrigidrotors.RefertotheISO
1940standardstodeterminetheresidualunbalancepermittedin
rigidrotors。
Q。Whatarerigidrotors?
A.Therotorswhichdonotchangeshapewhenspeedofrotation
増加、ortheoneswhichdonotoperateatresonantfrequency、
areclassifiedasrigidrotors。
Q。Whatareflexiblerotors?
A.Flexiblerotorsarerotorswhichoperateneartheirresonant
周波数。Thisrunningofmotorgeneratesveryslightdeformation
oftherotor。Flexiblerotorsneedtobebalancedathigherspeeds
andalsoneartheirservicespeeds。Insitubalancingis 関数
requiredtoachievedesiredresults。
Q。Whataresoftbearingdynamicbalancingmachinesandhard
bearingdynamicbalancingmachines?
A.Fewdecadesback、whenbalancingmachineswereintroduced、
cradleonwhichtherollersweresupportedneededtobemovedto
measurethevibrationlevelsduetounbalance。Withtheadventof
technologyandintroductionofquartztransducerstomeasureforce、
itisnolongerrequiredforthecradlestooscillatetomeasure
振動。
Themachineswhichcontinuedtohaveoscillatingcradlesand
electrodynamicpicupstomeasurevibrationwereclassifiedassoft
bearingmachines。
Themachineswhichhadrigidcradlesdevoidofanymovementand
measureforceusingpiezoorotherpicupsareclassifiedashard
bearingdynamicbalancingmachines。
Thebasicdesignphilosophyofhardbearingdynamicbalancing
machinesismeasuringforceandtheadvancementof
computationalmathematicsusingmicroprocessorshasenabled
introductionofbalancingmachineswhosecalibrationsarevalidfor
thecompleterangeofspeeds、weightsandqualityrequirements。
Thealgorithmusedfacilitatespermanentcalibrationandhostof
otherfeaturesfordaytodayuseandextremereliability。
