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外文翻译--数控机床性能测试设备的开发和利用 英文版.pdf

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外文翻译--数控机床性能测试设备的开发和利用 英文版.pdf

THEDEVELOPMENTANDAPPLICATIONOFPERFORMANCETESTINGDEVICESFORCNCMACHINETOOLSWENYUHJYWEPROFESSOR,DEPARTMENTOFAUTOMATIONENGINEERING,NATIONALHUWEIINSTITUTEOFTECHNOLOGY,HUWEI,YUNLIN,TAIWAN,632ADDRESS64WENHUAROAD,NATIONALHUWEIINSTITUTEOFTECHNOLOGYHUWEI,YUNLIN,TAIWAN,ROCEMAILJYWESUNWSNHITEDUTWABSTRACTTHETESTINGDEVICESFORPERFORMANCETESTINGONACNCMACHINETOOLWEREDEVELOPEDASMALLRADIUSCONTOURINGDEVICEWASEMPLOYEDFORCHECKINGTHEDYNAMICPERFORMANCEOFACNCMACHINETOOLTHISDEVICEWASCOMPOSEDOFALASERDIODEANDAQUADRANTSENSORFORCHECKINGGEOMETRICERROROFACNCMACHINETOOL,ALONGRADIUSCONTOURINGDEVICEWASEMPLOYEDTHEOPTICENCODERCONTOURINGSYSTEMSWEREALSOREPRESENTEDEXPERIMENTALWORKWASCARRIEDOUTINTHEPAPERCOPYRIGHT2002IFACKEYWORDSCONTOURING;GEOMETRICERROR;CNCMACHINETOOL;QUADRANTSENSOR;OPTICSCALEMEASURINGSYSTEM;PLANARENCODER1INTRODUCTIONJBBRYAN1982DEVELOPEDTHEFIRSTBALLBARSYSTEMFORTHECONTOURINGTESTHOWEVER,INTHISSYSTEM,THEUNCERTAINTYISHIGHDUETOTHEFRICTIONBETWEENTHEMASTERBALLSANDTHEMAGNETICSOCKETSANDNOACCURATECONTOURINGRADIUSWASGIVENKNAPP’SSYSTEM1983,1983USEDTHECIRCLECOMPARISONSTANDARDDISCMOUNTEDONTHETESTEDTABLEOFTHEMACHINETOOLANDTHE2DPROBEYKAKINOV1985,YKAKINO,YIHARA,AKAMEI1986ANDYKAKINOV,YIHARAANDYNAKASTSU1987YKAKINO,YIHARAANDYNAKASTU1986PROVIDEDSOMEMETHODSBYUSINGTHEBALLBARSYSTEMTOCALIBRATEACOORDINATEMEASURINGMACHINEANDCNCMACHINETOOLSWKNAPP1986,1988DESCRIBEDTHERULESTOREDUCETHEERRORSDUETOTHESTICKSLIPANDOTHERSMBURDEKINANDJPARK1988MODIFIEDTHEORIGINALBALLBARSYSTEMBYEMPLOYINGAFOURRODLINKAGEMBURDEKINANDWYJYWE1992PROVIDEDAMETHODTODIAGNOSETHECONTOURINGERRORANDTOADJUSTTHEPARAMETERSOFTHECNCCONTROLLERTOOPTIMIZETHEPERFORMANCEOFTHETESTEDCNCMACHINETOOLJCZIEGERTANDCHRITOPHER1994DESCRIBEDTHELASERBALLBARSYSTEMBYGUIDINGAFIBERWITHALASERINTERFEROMETERWENYUHJYWE2001PROVIDEDTHEAPPLICATIONOFTHEDEVELOPEDLINKAGETOVERIFYTHECONTOURINGERROROFACNCLATHEANDALSOPROVIDEDTHEMETHODTOCOMPENSATEFORTHEERRORTHEABOVECONTOURINGSYSTEMSPROVIDEDTHEGENERALPURPOSEOFACONTOURINGTESTWITHTHEHIGHCOSTOFTHEMEASURINGDEVICE,THEYSTILLCANNOTPROVIDEPROPERCONTOURINGSYSTEMSFORVARIOUSPURPOSESTHUS,INTHISPAPER,SOMESIMPLEANDLOWCOSTCONTOURINGSYSTEMSAREDEVELOPEDINDIVIDUALLYFORDIFFERENTTESTPURPOSESTHEYARESUMMARIZEDANDREPRESENTEDASFOLLOWED1THELASERDIODEANDTHEQUADRANTSENSORCONTOURINGSYSTEMFORSMALLRADIUSCONTOURINGLESSTHAN4MMINTHECONTOURINGRADIUS2THEOPTICSCALECONTOURINGSYSTEMFORLARGERADIUSCONTOURINGANDFORTHEVOLUMETRICERRORTESTUPTO300MMINTHECONTOURINGRADIUS3THEOPTICSCALECONTOURINGSYSTEMFORTHEVOLUMETRICERRORTEST4THESELFSUPPORTEDBALLBARSYSTEMFORCONTOURINGTESTUNDERCUTTINGSITUATION2THELASERDIODEANDTHEQUADRANTSENSORCONTOURINGSYSTEMQSCSFIG1DESCRIBESTHELASERDIODEANDQUADRANTSENSORMEASURINGSYSTEM,COMPOSEDOFALASERDIODE,ANOPTICLENSES,ASHIELD,AQUADRANTSENSOR,ASIGNALPROPOSE,ANA/DINTERFACECARDANDAPCTHEQUADRANTSENSOROUTPUT4CHANNELSOFVOLTAGESWHILETHELASERLIGHTISPROJECTEDONITDUETOTHELIMITATIONOFTHESIZEOFTHEQUADRANTDETECTOR,ONLYUPTO4MMCONTOURINGRADIUSISAVAILABLEHOWEVER,THEREISGOODENOUGHFORCHECKINGTHEDYNAMICPERFORMANCEOFTHECNCCOPYRIGHT2002IFAC15THTRIENNIALWORLDCONGRESS,BARCELONA,SPAINMACHINETOOLFIG1THEPRINCIPLETHEQUADRANTSENSORFORPERFORMANCETESTOFAMACHINETOOLAVBVCVDVXYDIODELASERFIG2THEWORKINGPRINCIPLEOFALASERDIODEANDAQUADRANTSENSORASSHOWNINFIG2,THELASERDIODEPROVIDESALASERLIGHTANDTHELIGHTISFOCUSEDANDPROJECTEDONTHEQUADRANTTHEQUADRANTOUTPUTSFOURCHANNELSIGNALSINTERMOFVOLTAGESFROMTHEPROJECTEDPOINTONTHEQUADRANTSENSOR,THEPOSITIONINXAXISANDINYAXISCANBEOBTAINEDLETVA,VB,VCANDVDREPRESENTTHEOUTPUTVOLTAGESOFTHESENSORFIG3SHOWSTHECALIBRATIONDIAGRAMTOOBTAINTHEPOSITIONSINXAXISANDINYAXISXXXBABABDAVVVV−XDXBBABAVVVV−AYYYDCDCBDAVVVV−YDYBDCDCVVVV−BFIG3THECALIBRATINGDIAGRAMOFANAXISOFAQUADRANTSENSORAFTERTHECALIBRATING,THECONSTANTSWILLBESAVEDINBEPCANDBEEMPLOYEDFORTHEFURTHERAPPLICATIONSFIG4THETESTRESULTONACNCVERTICALMILLINGMACHINEWITHAFANUCSERIESOMCONTROLLER31THEEXPERIMENTALTESTSBYUSINGQSCSASSHOWNINFIG4,THEQUADRANTSENSORWORKINGRANGEISABOUT6MM6MMAFTERTHECALIBRATIONACNCVERTICALMILLINGMACHINEWITHAFANUCSERIESOMCONTROLLERISTESTEDTHECONTOURINGFEEDRATEISSELECTEDAT10,2100AND3200MM/MININDIVIDUALLYA2MMCIRCULARCONTOURINGRADIUSISSETFORTHREERUNSFORBOTHCLOCKWISEANDANTICLOCKWISETHEREPEATABILITYFOREACH3RUNSISVERYGOODINTHEACTUALTESTTHECONTOURINGRADIUSREDUCESWHENFEEDRATEINCREASESATAFEEDRATEOF3200MM/MIN,THERADIUSERRORISABOUT07MMALSO,THECONTOURINGERRORRESULTINFIG4SHOWSA45ELLIPSEPATHALLTHESECONTOURINGERRORSINFIG4ARECORRESPONDINGTOTHOSESHOWNINTHEMANUAL1990PROVIDEDBYFANUCCO3THEOPTICSCALEMEASURINGSYSTEMINTHISSECTIONANOPTICSCALEMEASURINGSYSTEMISDEVELOPEDBASICALLY,THESYSTEMISEMPLOYEDFORCONTOURINGTESTONACNCMACHINETOOLHOWEVER,THEVOLUMETRICERRORTESTOFEMPLOYINGTHISSYSTEMISALSOSTUDIEDTHENTHEMETHODTOEMPLOYTHISSYSTEMFORSQUARENESSERRORSTESTISREPRESENTED31THEOPTICSCALEMEASURINGSYSTEMFORTHECONTOURINGTESTFIG5INDICATESTHEOPTICSCALEMEASURINGSYSTEMFORCNCMACHINETOOLPERFORMANCETESTANOPTICSCALEISFIXEDONTHESUPPORTINGBLOCKTHEREADINGHEADISGUIDEDBYTHEGUIDINGBARANDMOVEDBYTHEMOVINGBARONELINEARBEARINGISFIXEDBETWEENTHESUPPORTINGBLOCKANDTHEMOVINGBARWHILETHEOTHERONEISFIXEDBETWEENTHEOPTICREADINGHEADANDTHEGUIDINGBARONEMASTERBALLISCONNECTEDTOAMAGNETICBAR,WHICHISFIXEDONTHECNCMACHINETOOLSPINDLEWHILETHEOTHERMASTERBALLANDMAGNETICBARELEMENTISFIXEDONAMAGNETICBASE,WHICHISSETONTHETESTINGCNCMACHINETOOLTABLEFIG5THESTRUCTUREOFTHEOPTICMEASURINGSYSTEMDURINGATEST,THERELATIVEDISPLACEMENTBETWEENTWOMASTERBALLSISSAMPLEDFORACIRCULARCONTOURINGTEST,THECONTOURINGCENTERISSETATTHEBALLCENTEROFTHESPINDLEWHILETHETABLEISMOVEDINTHETWOAXESOFTHEMACHINETOOLATTHESAMETIMETHECONTOURINGMOTIONCAUSESTHEOPTICSCALETOMOVEALONGTHEOPTICREADINGHEADTHEREFORE,THESAMPLECANBEOBTAINEDANDSENTTOTHEPCVIAACOUNTERINTERFACECARDFURTHERMORE,SOFTWAREISWRITTENTOSIMPLE,RECORDANDTOANALYZETHEDATAFIG6THESTRUCTUREOFUSINGTHEOPTICMEASURINGSYSTEMFORVOLUMETRICERRORTEST4THEOPTICSCALEMEASURINGSYSTEMFORTHEVOLUMETRICERRORTESTACCORDINGTOISO2032ORANSIB5STANDARD,FORCNCMACHINETOOLPOSITIONINGTEST,ASIMPLEPOSITIONTESTCANBEEXECUTED,INGENERAL,BYANEXPENSIVELASERINTERFEROMETERSYSTEMFORDIFFERENTMEASURINGAREAS,DIFFERENTSETTINGUPSARENECESSARYASPREVIOUSSTUDYBYWENYUHJYWE2000,ASPHEREVOLUMETRICERRORCANBECARRIEDOUTBYABALLBARSYSTEMINTHATSYSTEM,ONLYTHEPOSITIONERRORANDBACKLASHONTHESURFACEOFTHESPHERECANBEOBTAINEDDUETOTHELIMITATIONOFTHEWORKINGRANGEOFTHELVDTLINEARVARIABLEDIFFERENTIALTRANSFORMER,WHICHISEMPLOYEDONTHEBALLBARSYSTEMINSUMMARY,THEOPTICSCALEMEASURINGSYSTEMTAKESBOTHADVANTAGESOFTHETWOMEASURINGSYSTEMS1INONESETTINGUP,AHOLLOWSPHERICALVOLUMETRICERROROFACNCMACHINETOOLCANBECARRIEDOUT2THECOSTOFTHISOPTICSCALESYSTEMISLOWITISEASYTOOPERATION3FORDIFFERENTSIZESOFCNCMACHINETOOLS,DIFFERENTRANGESOFOPTICSCALESAREALWAYSAVAILABLEFIG6SHOWSTHESAMPLINGPATHOFTHEHOLLOWSPHEREVOLUMEOFACNCMACHINETOOLINONESETTINGUP,THECENTEROFTHEMASTERBALLOFTHEOPTICSCALELINKAGEISSETABOUTATTHECENTEROFTHEVOLUMEOFTHETESTEDCNCMACHINETOOLTHENPOSSIBLEEVENSPACINGARRANGEMENTISTAKENTOIDENTIFYTHESAMPLINGPATHFOREXAMPLE,THESPHEREISCUTINTO5PLANESEACHPLANEISEVENLYCUTINTO6LINES360/60EACHLINEINCLUDES8SAMPLINGPOINTS240MM/30MM8THUSINONESETTINGUP240SAMPLINGPOINTS5X6X8240CANBETAKENTOTESTTHEBACKLASHANDTHEREPEATABILITY3X2RUNSARENEEDEDTHUS240X6RUNS1440SAMPLINGPOINTSARETAKENITTAKES2SECONDSFOREACHSAMPLINGTHUS,ITTAKESABOUTONEHOURINCLUDINGSETTINGUPTIMETOCARRYOUTTHISWORKFIG7THETESTARRANGEMENTFORSQUARENESSERRORSTESTSOFYZANDZXPLANEINTHISTESTARRANGEMENTINFIG7,AHORIZONTALXYPLANECONTOURINGISCARRIEDOUTTHEN,WITHTHESAMESETTINGUPANDTHESAMEOPTICSCALEMEASURINGSYSTEM,LETTHESPINDLEMOVEUPINZAXISATADISTANCEOFFSETTHESECONDCONTOURINGTESTISTHENEXECUTEDWITHTHISOPTICSCALEMEASURINGSYSTEM,ITISNOTNECESSARYTOCHANGETHELINKAGEORTHESETTINGUPDURINGTHISSQUARENESSTESTIFNOSQUARENESSERROREXISTSTHESAMEANALYZEDINITIALSETTINGUPERRORSECCENTRICITYINBOTHCONTOURINGTESTSWILLBEOBTAINEDUNDERTHISARRANGEMENT,THESECONDSAMPLEDDATAMUSTBEMODIFIEDBEFOREANALYSISTHEREFORE,COSANGLESETOUTPUTTRANSDUCERDATAMODIFIEDΘΘWHERE,21COS1DTESTNLINKLONGOFLENGTHTESTSTLINKSHORTOFLENGTHANGLESET−−−AFTERTHESAMPLINGTHEORIGINALSAMPLEDATAWITHSHORTLINKANDTHEMODIFIEDDATAWITHLONGLINKAREANALYZEDBYTHELEASTSQUAREFITTINGTHETWOINDIVIDUALANALYZEDINITIALSETUPERRORSAREUSEDFORTHECALCULATIONOFTHESQUARENESSERRORSQUARENESSATZXPLANETAN121OFFSETXX−−SQUARENESSATYZPLANETAN121OFFSETYY−−WHEREISTHEANALYZEDCENTEROFTHEFIRSTCONTOURINGTEST11,YXWHEREISTHEANALYZEDCENTEROFTHESECONDCONTOURINGTEST22,YXOFFSETISTHEMOVEMENTDISTANCEINZAXISAFTERTHEFIRSTCONTOURINGTEST41THEPLANARENCODERCONTOURINGDEVICEFORCNCMACHINETOOLSTHEPRINCIPLEOFTHEPLANARENCODERAPLANARENCODERSYSTEM,SUCHASRENISHAWRGXGRIDPLATE,HASBEENDEVELOPEDFORAPPLICATIONSSUCHASSEMICONDUCTORANDELECTRONICSMANUFACTURINGEQUIPMENTTHESYSTEMUSESREADHEADWITH2ORTHOGONALSENSORSTHATREADACHEGUREPATTERNEDGRIDINBOTHXANDYDIRECTIONSSIMULTANEOUSLYTHESYSTEMWITHGOODDYNAMICRESPONSECANPROVIDEUPTO01MRESOLUTIONINPOSITIONINGFIG8SHOWSTHEARRANGEMENTOFTHECONTOURINGTESTBYUSINGASIMPLEPLANARENCODERTHISPLANARENCODERPROVIDESPOSITIONINGINFORMATIONINEACHAXISFORA2DCONTOURINGDURINGTHETEST,THEPLANARENCODERISSETONTHECNCMACHINETOOLTHEREADINGHEADISFIXEDWITHTHESPINDLEOFTHECNCMACHINETOOLTHESOFTWAREOFTHECOMPUTERVIAACOUNTERCARDCANREADTHESAMPLINGDATATHISSAMPLECONTOURINGDEVICEPROVIDESTHEFOLLOWINGFEATURES1DURINGACONTOURINGTEST,THEINDIVIDUALCONTOURINGERRORINEACHAXISCANBEOBTAINEDTHISISUSEFULFORANALYZINGANDCOMPENSATINGTHECONTOURINGERROR2THECONTOURINGAREACANBEUPTO300MMX300MMWITHTHESELECTIONOF01MTO1MRESOLUTIONSWITHINTHISAREA,VARIOUSCONTOURINGPATHSCANBEARRANGED3ITISEASYFORSETTINGUPANDOPERATIONFIG8THEPLANARENCODERFORCONTOURINGTEST42THETESTRESULTSASIMPLECONTOURINGTESTISCARRIEDOUTONAXYPLANEOFAVERTICALCNCMACHINETOOLWITH0MFANUCCONTROLLERTHECONTOURINGRESULTISSHOWNINFIG9THEANTICLOCKWISEANDCLOCKWISECONTOURINGTESTSAT20MMRADIUSCANMEETISO2301AND2302REQUIREMENTSFROMTHERESULTS,THEABSOLUTERADIUSERRORCANBEFOUNDEASILYFORGENERALCONTOURINGSYSTEMS,ONLYOUTOFROUNDNESSISGIVENFURTHERMORE,THEERRORINEACHAXISCANALSOBEFOUNDINDIVIDUALLYIFNECESSARYTHISISUSEFULFORANALYSISPURPOSEFIG9THECONTOURINGRESULTWITHAPLANARENCODER4THESELFSUPPORTEDLINKAGESYSTEMSLSINTHISSECTION,ASELFSUPPORTEDLINKAGEISDEVELOPEDFORTHEAPPLICATIONOFCONTOURINGTESTUNDERCUTTINGCONDITIONTHEPROPOSEDSLSIS

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