Mitsubishi三菱数控系统-NC Analyzer Guidebook [Simplified spindle adjustment] (for M7 Series)

1.Introduction(1)Theoperationprocedureofthisdocumentappliestotheservoadjustmentsupporttool"NCAnalyzer".Fordetailsonfunctionsoroperations,refertotheNCAnalyzerInstructionManual(IB-1501086(ENG)).(2)Sincesettingsdescribedinthisdocumentareusedforsimplifiedadjustmentandareperformedinastability-orientedmanner,therearedifferentsettingsfromthosedescribedtheInstructionManualofthedriveunit.(3)#1267bit0(ext03):Thechangeofthehigh-speedhigh-accuracycontrolGcodecanbeoperatedeitherby"0"(conventionalformat)orby"1"(MITSUBISHIspecialformat).(4)Foradjustment,itisessentialtoexecuteautomaticoperation(cyclestart).Beforehand,setthestandardparametersforthespindlemotorusingNCConfigurator2.Makesurethat#2013(OT-),#2014(OT+),etc.ofthesoftlimithavebeencorrectlyset.Sincetheadjustmentcausesaxismovementandaxisvibration,becarefulofconfirmingsafeconditions,machineinterference,etc.(5)Completethespindleassemblyorbringitclosetocompletionbeforeadjustingthespindle.Sincethespindleiseasilyinfluencedbythemachinesystemconditions,suchasinertiaandfriction,attachbeforehandatleastachuck,cylinder,jaws,etc.thatshouldbeattachedtothespindle.Especiallyforalathe,withoutattachingitemswithlargeinertia,suchaschuck,cylinder,jawsandmaximumworkpiecetobeprocessed,adjustmentresultschangeheavily,andalarmsmaybetriggeredafterinstallation.Sincethemaximumpermissiblerotationsandinertiaaredifferentbetweenthemillingcutterandthedrillinthemachiningcenterorthetappingcenter,preparethetoolsforchecking"Maximumrotation"and"Maximuminertia"respectively.Carryouttheinitialoperation(aging)sothatthespindlecanberotatedtothemaximumspeedbeforeadjustingit.*Duringadjustment,thetemperatureofthespindlecanreachapproximately80[°C].*Tomeasurethewaveforms,measurethetemperatureofthespindleinthelowtemperaturecondition(neartheoutsidetemperature)andthehightemperaturecondition(notlowerthan60[°C])(theconditioninwhichthetemperatureofthespindlemotorhasbeenraisedbyrepeatingacceleration/deceleration)andmakesurethatthewaveformsconformtothejudgmentcriteriainbothtemperatureconditions.12.FlowofspindleadjustmentoperationPreparationbeforeadjustment[1]SettingandconnectionforNCandWindows[5]SettingandconnectionforNCAnalyzerWaveformadjustmentduring[7]constantspeedConnectioncheck[10][14]SpeedloopgainandWaveformcheckpositionloopgainadjustmentduringaccelerationDecelerationtimeadjustment[17]DecelerationtimeadjustmentOrientationadjustment[19]FortheorientationOrientationadjustmentspecifications,fromtherotatingstatecarryouttheadjustment.[23]OrientationadjustmentfromthestoppingstateSynchronoustappingadjustmentForthesynchronoustapping[27]specifications,carryoutSynchronoustappingtheadjustment.timeconstant,speedloopgain,andpositionloopgainadjustment[35]SynchronoustappingtimeconstantminimizationMulti-stepacceleration/decelerationadjustment23.Spindleadjustmentoperation[1]Preparationbeforeadjustmentiscarriedout(1)Pressdownandholdtheemergencystopbutton,andturnonthepoweroftheNC.(2)ChecktheIPaddresssettingoftheNC("Ethernetparameter"settingvalue).#1926(GlobalIPaddress):192.168.200.1(Initialsettingvalue)#1927(GlobalSubnetmask):255.255.255.0(Initialsettingvalue)[2]ChangetheIPaddressofthepersonalcomputer(Windows)(1)Set"192.168.200.89"fortheIPaddress.(2)Set"255.255.255.0"forthesubnetmask.FordetailsontheIPaddresssetting,referto[Appendix1].[3]ChangetheNCparameters(1)Set"1"forbit0of#1224.Enter"00000001"asshowninthefiguretotheright.In#1164(ATS),settingisnotnecessaryand"0"isenteredaccordingly.[4]ConnecttheNCtoapersonalcomputerwithanEthernetcable(1)TheconnectionbetweenthepersonalcomputerandtheNCshallbemadewithacrossingcable.Throughaswitchinghub,theconnectioncanbemadewithastraightcable.3[5]ConfiguretheconnectionsettingsforNCAnalyzer(1)Choose"Communicationpathsetting"from"Setup".(2)Choose"M700V/M70V/E70"from"NCmodel".(3)Double-clickanNCtobeadjustedfrom"ListofconnectableNCs",andsetitfor"IPaddress".IfadesiredNCisnotdisplayedon"ListofconnectableNCs",checktheIPaddresssetting,connectionofcablesandWindowsFirewallsetting.[6]Performcommunicationtest(1)Click"Test".(2)When"Itsucceededincommunication."isdisplayed,click"OK".(3)Click"OK"in"Communicationpathsetting".[7]Checkthebasicparametersettings•Beforecarryingoutthespindleadjustment,checkthefollowingparametersthathavebeensetinNCConfigurator2:#3001to4(slimit1to4):Maximumrotationspeedofthespindleunit#3005to8(smax1to4):MaximumrotationspeedbytheScommand#3023(smini):Minimumrotationspeedofthespindle(Specify"0"foradjustment,andaftertheadjustment,specifyanyvalue)#3101to4(sp_t1to4):Spindleacceleration/decelerationtimeconstant(Normally,set"100")#13057to60(GRA1to4):Numberofspindlemotorsidegearteeth#13061to64(GRB1to4):NumberofspindleunitsidegearteethIfthegearratiois1/2(deceleration),setGRA=2,GRB=1.Incaseofaspecialmotorsuchasbuilt-inspindlemotor,specifythesettingvaluesintheseparatelyarranged"Parametersettinglist"in#13001(SP001)to#13240(SP240).4[8]Settheparametersaccordingtomechanicalstructure(1)Setthepositionloopgain(#13001(SP001))accordingtomechanicalstructureasshownbelow:•Machiningcenter"33"•Geared"15"•Built-inspindle"38"•Tappingcenter"47"•Lathe"15"V-beltdrive,spindleinertiaratiois10timesormore"10to5"Directdrive(includingbuilt-inspindle),11[kW]ormore"26"Ditto,lessthan11[kW]"33"[9]Checkitemsforexternaldetector(closed-loop)specificationsForcaseswhereanexternaldetectorisattachedtothespindle,itisnecessarytocheckthefollowingimportantpointsbeforestartup.Exceptinthecasesofexternaldetector(closed-loop)specifications,proceedto[10].[Externaldetectorparametersetting]#13017(SP017)bit4:Detectorpolarity(mountingdirection)#13019(SP019):Detectorresolution#13031(SP031):Detectortype#13054(SP054):Closedloopoverrundetectionwidth(ForV-beltdrive,set"-1")ForABZpulseencoder(OSE-1024-),#13019(SP019)="4096",#13097(SP097)="-1"[Externaldetectorpolaritycheck]<>Forthecaseswhere"Externaldetector"isused,besuretochecktherelationshipbetweentherotationdirectionofthespindleandthatofthedetector.Therotationdirectionofthemachineenddetectorincomparisonwiththespindlemotor:Whenrotatedmanuallysothatthemachinepositionmovesinthe+direction,Reverserotation:#13017(SP017)bit4"0"ifthemotorsideFBbecomes-,set"1"inForwardrotation:#13017(SP017)bit4"1"#13017bit4.Iftherotationdirectioncannotbecheckedvisually(incorporatedintothemachinesuchasERM280),checkitonthespindleunitdisplayofthedrivemonitorasshowninthefiguretotheright.Priortowork,besuretoputthedetectorintoemergencystopstatus.[V-beltdriveparametersetting](1)Set"100"in#13057to60(GRA1to4).(2)Set"100"in#13061to64(GRB1to4).(3)CanceltheemergencystopandgivetheS100rotationcommand.Settherotationspeed[r/min]in#13057to60(4)Checktherotationspeedonthespindleunitdisplay(GRA1to4).Inthisexample,accordingtotherotationspeed=ofthedrivemonitor.149,set"149"in#13057to60(GRA1to4).(5)Settherotationspeedcheckedat(4)in#13057to60(GRA1to4).5[10]Createtheprogramforcheckingaspindleacceleration/decelerationwaveform(1)Inordertochecktheaccelerationtime,decelerationtimeandcurrentwaveformofthespindle,createtheprogramontheNCside.[Programexampleforcheck]G04X1.0;(1-secondwait)S500;(Spindlerotationspeedcommand)M3;(Spindleforwardrotationstartcommand)G04X3.0;(Constantspeedtime)M5;(Spindlestopcommand)G04X3.0;(3-minutewaitafterstop)M30;(Endofwaveformacquisition)AccelerationConstantspeedDecelerationInNCAnalyzer,theprogramforcheckingaspindleacceleration/decelerationwaveformcannotbecreated.Checkwiththespindlerotationspeedcommandevery500to1000rotations,startingatlowspeedandendingatCurrentwaveformthemaximumspeed.Whenmeasuringthewaveform,forcheckingtheVelocitywaveformwaveformduringconstantspeed,adjustthetimesothattheconstantspeedtimebecomeslongerthanorequaltotheaccelerationtime.[Accelerationtime≤constantspeedtime][11]Setthe"Measurementconditions"Specifythemeasurementitemsandmeasurementconditions(measurementaxis).(1)Fromthe"MeasurementFunction"menu,choose"Measurementfunction".(2)Choose"Time-seriesdatameasurement"for"MeasuredItems".(3)Choose"Reciprocation"for"Kind".(4)Choose"SP-1"for"Axis1"in"MeasureCondition".(5)Click"Measure".Ifthespindleischosenin"Axis1",theitemsotherthan(2)to(4)aregrayedoutandcannotbechosen.6[12]Set"Time-seriesdatameasurement"(1)Choose"Cyclestart"for"Start"in"Triggersetting".When"Cyclestart"ischosen,"Cycleend"isautomaticallyselectedfor"End".(2)Choose"1.7[ms]"for"Samplingcycle"in"Timesetting"."Measurementtype","Modeselection"and"Defaultsetting"of"MeasurementTarget"shallnotbechanged.(4)Choose"Get","Axis"and"Waveformtype"asfollows.☑CH1SP-1Speedfeedback(r/min)☑CH2SP-1Currentfeedback(5)Click"OK".[13]Startsampling(1)Check"☑""Showthewaveformautomaticallywhenthesamplingiscomplete".(2)Clicking"Startsampling"displays"Waitingforthetrigger".(3)Searchtheprogramcreatedin[10],andaftercancelingtheemergencystopbutton,presstheautomaticstart(cyclestart)buttononthemechanicaloperationpanel.Awaveformappearsafterthesamplingends.[14]Checkthewaveformofthecurrentfeedback(1)Checkthewaveformofthecurrentfeedback.Checkaswitchingfromaccelerationtoconstantspeedandthewaveformduringtheconstantspeed.CheckpointsConstantcurrentamplitudeSmallcurrentamplitudeNocurrentamplitudewhenswitchingfromaccelerationtoconstantspeedInthisstatus,thespeedloopgainandpositionloopgainshowpropervalues.7Currentfeedbackwaveformexampleduringconstantspeed<>[Waveformstatus]ConstantcurrentamplitudeSmallcurrentamplitudeNolargeamplitudewhenswitchingfromaccelerationtoconstantspeed[Possiblecause]<>Highpositionloopgain(SP001(PGV))[Countermeasure]Ifthepositionloopgainistoohighevenwhenaspeedloopgainisnormal,thesamewaveformappears.Therefore,decreasethepositionloopgainfirst.<>[Possiblecause]Highspeedloopgain(SP005(VGN1))[Countermeasure]Decreasethespeedloopgain(SP005(VGN1)).[Possiblecause]Highorlowspeedloopgain(SP005(VGN1))[Countermeasure]Forthejudgmentonwhetherthespeedloopgainis"high"or"low",checkthecurrentfrequency,andmakeajudgmenton<>whetherthefrequencyis100[Hz]orhigher.Inthecaseofthefollowingexample,thespeedloopgaincanbejudgedaslowbecausethecurrentfrequencyis10.8173[Hz].Therefore,increasethespeedloopgain.8[15]Checktheswitchingwaveformfromtheendofaccelerationtotheconstantspeed(1)Theswitchingwaveformfromtheendofaccelerationtotheconstantspeedcanbeasshowninthefiguretotheright.Inthiscase,decreasethespeedloopgainadvancecompensation(SP006(VIA)).<>IftheA-widthisnotlargerthan1.5timestheB-width(themaximumcurrentduringtheconstantspeed),thewaveformisjudgedtobenormal.Intheexampletotheright,theB-width(maximumvalue)=20%,theA-width(maximumvalue)=50%BA-width(50%)>B-width(20%)x1.5=30%ATherefore,itisjudgedthattheadjustmentisrequired.Decreasethedifferenceasmuchaspossibleevenifitisinsidethejudgmentcriteria.Thefiguretotherightisanexampleofadjustmentresult,whichshowsawaveformwhenSP006(VIA):1900(standardsettingvalue)isdecreasedto900.ThelowerlimitvalueofSP006(VIA)is600.Ifthewaveformisoutsidethejudgmentcriteriaevenafterthevalueisdecreasedto600,decreasethepositionloopgain(SP001(PGV)).[16]Checktheaccelerationtime(1)Checktheaccelerationtime.Sincetheaccelerationtimemaychangeaccordingtothetemperatureofthespindlemotor,theaccelerationwaveformismeasuredathightemperature(60°Corhigher)andlowtemperature(aroundtheoutsidetemperature).AccelerationtimeThespindleaccelerationtimeisdeterminedbythefollowingthreepoints:SpindlemotoroutputSpindleunitinertia(includingfriction)AccelerationtimeToolorworkpieceinertiaTheaccelerationtimecannotbeshorterthanthetheoreticalaccelerationtime.ThetheoreticalaccelerationtimecanbecalculatedusingNCservocapacityselectionsoftware.Obtainthespindlecontroloutput5-bit1tochecktheaccelerationtimeusingaspeedreachedsignal.[Caution]Enlargethesettingof1div(enlargeintheverticaldirection)tojudgetheaccelerationtimebyvelocitywaveform.Thecurrentcandropduringaccelerationasshownatinthefiguretotheright,butthisisinorderbecausethisiscausedbythecharacteristicsofthespindlemotor.Whentheservomotorisusedasaspindlemotor,thecurrentvalueduringaccelerationdiffersaccordingtothemotor.Topreventthemotorfrombeingburnt,itisnotallowedtochangetheWaveformexampleofthecoilcurrentlimitvalue(#13153(SP153)).switchingspecifications9[17]Adjustthedecelerationtime(1)Checkthewaveformduringdeceleration.(2)Checkthewaveformatdecelerationstart,andmakesurethatitisnotmorethan±100%.Ifthedifferenceexceeds±100%,changethesettingDecelerationvaluesof#13071(SP71)and#13072(SP72)bystartmultiplyingby0.7,andcheckthecurrentvalueagain.Ifthedifferencestillexceeds±100%evenafterDecelerationtimechangingtheparameters,decreasethevalueofthepositionloopDecelerationtimegain(#13001(SP001))by"5".<>Accelerationtime≥decelerationtimeCurrentvalueatdecelerationstartiswithin±100%Checkthattheabove-mentionedconditionsaresatisfiedunderthefollowingthreesetsofconditions:Checkundernoloadandmaximumload(withthemaximumtool/workpiece)Checkunderlowtemperature(≒outsidetemperature)andhightemperature(60°Corhigher)conditionsofthespindlemotorCheckduringdecelerationfromthemaximumrotationspeedJudgmentguidelinesinthecasewherethemaximumtool/workpiececannotbepreparedAccelerationtime≒decelerationtimeCurrentvalueatdecelerationstartiswithin±80%Allowsomemarginwhenadjusting[Caution]Payattentiontothepermissiblerotationsperminutewhentherotationsperminutearecommandedwiththemaximumtool(maximumworkpiece).[18]Aftertheabove-mentionedpointshavebeenconfirmed,thesimpleadjustmentofthespindleiscompletedTheorientationaccuracyandthepositioningtimecanbeimprovedbyadjustingtheorientation.Toadjusttheorientation,proceedto[19].Tofinishadjustingthespindle:(1)ReturntheNCparameterschangedin[3]totheoriginalvalues.Set"0"forbit0of#1224.(2)ReturntheIPaddressofthepersonalcomputer(Windows)changedin[2]tothevaluenoteddownin[2].Itisrecommendedthattheparameterdatabebackedup.Forbackupoftheparameters,thebatchbackupfunctionoftheNCandstoragebyNCConfigurator2areuseful.10[19]AdjusttheorientationfromtherotatingstateAdjusttheorientationfromtherotatingstate.Forthecasesoftheproximityswitchorientationcontrol,proceedto[23].Sincetheorientationstoptimedifferseachtime,theorientationoperationiscarriedoutthreetimesandthewaveformofthelargestcurrentduringoperationfromdecelerationstarttoin-positionendisusedforadjustmentjudgment.Sincethecurrentvaluecandifferaccordingtotherotationsperminute,carryoutcheckuptothemaximumspeedevery1000to2000rotationsinreferencetothefollowingcheckingprogram.[Checkingprogramexample]N1:(LineNo.1)G04X1.0;(1-secondwait)S1000;(Spindlerotationspeedcommand)M3;(Spindlerotationcommand)G04X3.0;(Constantspeedtime)M19;(Orientationcommand)G04X3.0;(3-secondwait)GOTO1;(JumptolineNo.1(repetition))Thelargerthecurrentwaveformduringorientationbecomes,thelatertheorientationcompletes.(1)Set#3106bitEaccordingtothemachine(machiningcenter/tappingcenter/lathe).Machiningcenter"0"Tappingcenter"0"Lathe"1"(WithoutsynchronoustappingbetweenspindleandaxisC:"0")Therelevantparametersfororientationadjustmentfromtherotatingstateareasfollows:Phasematching#3106bitEPositionloopgainSpeedloopgainExcitationratiodecelerationratio#13008(VGN2)0#13002(PGN)#13009(VIA2)#13015(PY2)#13010(VIL2)#13016(DDT)#13005(VGN1)1#13001(PGV)#13006(VIA1)#13014(PY1)#13007(VIL1)Forthecasesoftheproximityswitchorientationcontrol,carryoutorientationcheckfromthestoppingstateonly.11[20]Set"Time-seriesdatameasurement"(1)Set"MeasureCondition"asin[11].(2)Choose"Manual"for"Start"in"Triggersetting".When"Manual"ischosen,"Manual"isautomaticallyselectedfor"End".(3)Choose"1.7[ms]"for"Samplingcycle"in"Timesetting".(4)"MeasurementTarget","Modeselection"and"Defaultsetting"shallnotbechanged.(5)Select"Get","Axis"and"Waveformtype".☑CH1SP-1Speedfeedback(r/min)☑CH2SP-1Currentfeedback☑CH3SP-1Controloutput1(5)Click"OK".When"Controloutput1"ischosenfor"Waveformtype","bitC:Duringin-position"isselectedasaninitialsettingvalue.[21]Startsampling(1)Check"☑""Showthewaveformautomaticallywhenthesamplingiscomplete".(2)Clicking"Startsampling"displays"Waitingforthetrigger".(3)Searchtheprogramcreatedin[19]andpresstheautomaticstart(cyclestart)buttononthemechanicaloperationpanel.(4)Aftertheorientationoperationiscarriedoutthreetimes,click"Endsampling".Awaveformappearsafterthesamplingends.12[22]CheckandadjustwaveformsduringorientationfromtherotatingstateCheckandadjustthewaveform.(1)Checkthecurrentwaveformduringtheorientationoperation,andmakesurethatthelargestcurrentvalue(atA)inthreewaveformsiswithin±100%.Ifthecurrentvalueexceeds±100%,decreasethesettingvalueof#13016(DDT).Inthefiguretotheright,sincethecurrentvalueinFirsttimeSecondtimeThirdtimethethirdwaveformisthelargest,checkthevalueatthispoint.(2)Fortheorientationtime,checkthetimefromthedecelerationstartuntilthesignalof"Controloutput1"becomes"1".Ifthecurrentvalue(atA)hasmargin,itispossibletoshortentheorientationtimebyincreasing#13016(SP16).<>Whencheckingthecurrentwaveform,thecurrentatAiswithin±100%Orientationtimeisshorterthanaccelerationtime+0.4second(targetvalue)+35%A-65%Inthefiguretotheright,thecurrentvalueisjudgedtobenormalbecauseitisinsidethejudgmentcriteriaasfollows:Currentduringorientationoperation:+35%,-65%Orientationtime:0.3520[sec]Orientationtime13[23]AdjusttheorientationfromthestoppingstateSincetheshortcutcontrolshallbesetfortheorientationfromthestoppingstateingeneral,stopthespindleatanapproximately180°positiontocarryouttheadjustment.(1)Createthecheckingprogramreferringtothesamplebelow.Thisprogramstopsthemachinefor3secondsaftermovingthespindleby180°andthencarriesouttheorientationoperation.[Checkingprogramexample]S30;(Spindlerotationspeedcommand)M3;(Spindlerotationcommand)G04X1.0;(Dwelltime)M5;(Spindlestop)G04X3.0;(Dwelltime)M19;(Orientationcommandstart)M30;(End)Thedwelltimeinthethirdlinehasbeensetto1secondsothatthespindlestopsatanapproximately180°position.Iftimingisnotcorrect,makefineadjustmentoftime.Sincetheprobabilityofstoppingatanapproximately180°positionislowforthefirsttimeintheprogram,checktheorientationinthesecondoperationorlater.Therelevantparametersfororientationadjustmentfromthestoppingstateareasfollows:Orientationcommand#3106bitEPositionloopgainSpeedloopgainspeed#13008(VGN2)0#13002(PGN)#13009(VIA2)#13010(VIL2)#3107(ori_spd)#13005(VGN1)1#13001(PGV)#13006(VIA1)#13007(VIL1)14[24]Samplingstart(1)Set"MeasuredItems"asin[20]andclick"OK".(2)Check"☑""Showthewaveformautomaticallywhenthesamplingiscomplete".(3)Starttheprogramcreatedin[23].(4)Click"Startsampling"duringexecutionofthefifthline(G04X3.0)."Samplingstandingby."appears.(5)Aftercheckingtheorientationoperation(M19),click"Endsampling".Awaveformappearsafterthesamplingends.[25]Checkandadjustwaveformduringorientationfromthestoppingstate(1)Checkthecurrentwaveformandorientationtime.(2)Checkthecurrentwaveformandmakesurethatthecurrentiswithin±100%.Ifthecurrentvalueexceeds100%,decreasethevalueof#3107(ori_spd).(3)Checktheorientationtime(thetimefromwhenthe"Controloutput1"signaldropsuntilitrisesafterdropping).Ifthecurrentvaluehasmargin,increasethevalueofOrientationtime#3107(ori_spd).<>Currentvalueduringorientationoperationiswithin±100%Orientationtimeisshorterthan0.4[sec](targetvalue)Inthefiguretotheright,thewaveformisjudgedtobenormalbecauseitisinsidethejudgmentcriteriaasfollows:Currentduringorientationoperation:+95%,-65%Orientationtime:0.3448second[26]Aftertheabove-mentionedpointshavebeenconfirmed,theorientationadjustmentiscompletedThesynchronoustappingaccuracyandthemachiningtimecanbeimprovedbyadjustingthesynchronoustapping.Toadjustthesynchronoustapping,proceedto[27].Tofinishadjustingthespindle:(1)ReturntheNCparameterschangedin[3]totheoriginalvalues.Set"0"forbit0of#1224.(2)ReturntheIPaddressofthepersonalcomputer(Windows)changedin[2]tothevaluenoteddownin[2].Itisrecommendedthattheparameterdatabebackedup.Forbackupoftheparameters,thebatchbackupfunctionoftheNCandstoragebyNCConfigurator2areuseful.15[27]CarryoutparametersettingforsynchronoustappingadjustmentCompleteadjustmentoftheservoaxisandspindlebeforesynchronoustappingadjustment.Itispostulatedthattheadjustmentofthespindle,aswellastheservoaxis(normallyZ-axis)tobesynchronizedwiththespindle,havebeencompleted.Iftheservoaxisrequiresroundnessadjustment,itisalsoessentialtocompleteroundnes