【毕业设计】推板式造波机的机械结构设计外文翻译

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1、ExpedientModelingofBallScrewFeedDrivesStuttgart,February2011InstituteforControlEngineeringofMachineToolsandManufacturingUnits(ISW),UniversityofStuttgart,Seidenstraße36,70174Stuttgart/GermanyAlexandru.Dadalau@isw.uni-stuttgart.dewww.isw.uni-stuttgart.deAbstractBallscrewfeedd

2、rivesarethemostcommonlyusedmechanismtoprovidelinearmotioninhighspeedmachinetools.Positionaccuracyandtheachievableclosedloopbandwidthofsuchdrivesystemsareusuallylimitedbythestructuralvibrationmodesofthemechanicalcomponents.Higherorderplantmodelsallowforabetterunderstandingof

3、thesystemdynamics,improvethedesignprocessoffeeddrivesandareessentialforthedevelopmentofsophisticatedcontrolstrategies.Thisworkpresentsaclearlyarrangedandversatilemodel,capableofexpressingtherelevantdynamicsofballscrewfeeddrives.Keywordsmachinetool∙simulation∙ballscrew∙plast

4、icity滚珠丝杠进给驱动的建模斯图加特，2011年二月德国，斯图加特，丝绸之路36,70174斯图加特大学，机床与加工设备控制工程学院（ISW）邮箱：Alexandru.Dadalau@isw.uni-stuttgart.de网址：www.isw.uni-stuttgart.de摘要：滚珠丝杠进给驱动是为高速机床提供线性运动最常用的机构，这种驱动系统的位置精度和可实现的闭环带宽通常受限于机械部件的结构振动模式。更高的订单工厂模型能够更好地了解系统动力学,改进进给驱动的设计过程并且对于先进的控制策略的发展至关重要。这项工作提出了明确的安排和通

5、用的模型,能够表达滚珠丝杠进给驱动的相关动态。关键词：机床∙仿真∙滚珠丝杠∙可塑性IntroductionDynamicalfeeddrivescommonlyusedinmachinetoolsandproductionunitsrepresentcomplexmechanicalstructureswithmultipledegreesoffreedom(DOF)andvariouseigenmodes.Numerousscientificworkshavedealtwiththesimulationofsuchdrivesystems,

6、usingFinite-Element-Methods(FEM)andcomplexmodelingtechniquesinorderrepresentthedynamicalbehaviorasdetailedaspossible[1-3].Incontrarytheapproachpresentedinthispaperaimsatfindinganintuitiveandeasytousemodel,capableofexpressingthemostrelevantcharacteristicsofaballscrewfeeddriv

7、ewithrespecttotheirapplicationinmachinetools.Generallyspokenaballscrewdrivecanbecharacterizedasasystemwiththreedifferenttypesofeigenmodes:axial,rotationalandflexuralmodes.Typicallythefirstaxialandrotationalmodeoftheballscrewshowadominantinfluenceontheoveralldynamicswhilethe

8、relevanceofhigherordermodesformosttechnicalapplicationsisrathersmall.Theexcitation