轮轴超声波自动探伤系统研制-(6186)

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1、万方数据西南交通大学硕士研究生学位论文第1I页Abstract111ebogiesoffreightrailwayvehiclesplayavitalrolefortherunningperformance．Shaftisakeycomponents，andthefeaturesofitsqualityaffecttheoperationoftherailway’Ssafety．Takingeffectivemeansintheprocessofvehiclemanufacture．overhaulshandefectsandprocessedinatim

2、elymanner,whichtoimprovethequalityoftmckmanufacturing，maintenance，ensurethesafetyoftransportation，itplaysakeyrole．W岫therapiddevelopmentofrailway,newmodels，thenewshafttypecontinuouslyusing，wheelandaxleinspectioninvehiclemaintenancelinkappearsmoreimportant．Atpresent,thedetectionofve

3、hicleaxlemeansmainlyrelyonmanualultrasonictesting，thiswayofflawdetectionefficiencyislow,theoperatorworkingstrengthislarge，andalsopoorreliability．Fortheexistingshaftautomaticultrasonicflawdetector,existintheprocessofinspectionapplicationactualdesignunreasonable，poordetectionaccurac

4、y,andmanyotherproblems．Thispaperhasbeendevelopedforaxleofwheelseatinsert，journalroots，largeshaftbodycrackandSOontorealizeautomaticultrasonicflawdetectionequipment，hopetoeffectivelyaddresstheshortcomingsofthecurrentdetectionmeans，improvetheefficiencyandreliabilityofwheelshaftofultr

5、asonicflawdetection．Stiffnessandstrengthintermsofmechanicalsystem，tochooseahigherprofileforstructuraldesign，improvethestability．Wheelmechanismadoptsthemechanicalbufferstable，conformtotherequirementsoftherelevantregulations．Probemovementadoptshighprecisionservo，steppermotordrivescr

6、ew,toensurereliabilityanddetectionprecision,usesmallAngleprobetoenhancedetectioncoverage．Intheaspectofcontrolsystemandelectricalcontrol，selecttheDMCmotioncontrolcarddetectionmotioncontrol，errorcompensationPIDcontrolmethodbyerrorcompensation，feedforwardrepetitivepositioningbasedont

7、heanalysisonthepositioningerror,highstability,positioningaccuracycanreach0．005mm，intheprobeandtheaxlecontactportioncoupledliquidautomaticcontrolsprayintheinspectionprocesstheprobe，reducewear,testingprocessCanbeautomaticflawdetectionormanualinspectionchoice，reducelaborintensity,imp

8、roveworkefficiencyofinspectionper