【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.d

2、eAbstractBallscrewfeeddrivesarethemostcommonlyusedmechanismtoprovidelinearmotioninhighspeedmachinetools.Positionaccuracyandtheachievableclosedloopbandwidthofsuchdrivesystemsareusuallylimitedbythestructuralvibrationmodesofthemechanicalcomponents.Higher

3、orderplantmodelsallowforabetterunderstandingofthesystemdynamics,improvethedesignprocessoffeeddrivesandareessentialforthedevelopmentofsophisticatedcontrolstrategies.Thisworkpresentsaclearlyarrangedandversatilemodel,capableofexpressingtherelevantdynamic

4、sofballscrewfeeddrives.Keywordsmachinetool∙simulation∙ballscrew∙plasticity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

5、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IntroductionDynamicalfeeddrivescommonlyusedinmachinetoolsandproductionunitsrepresentcomplexmechanicalstructureswithmul

6、tipledegreesoffreedom(DOF)andvariouseigenmodes.Numerousscientificworkshavedealtwiththesimulationofsuchdrivesystems,usingFinite-Element-Methods(FEM)andcomplexmodelingtechniquesinorderrepresentthedynamicalbehaviorasdetailedaspossible[1-3].Incontrarythea

7、pproachpresentedinthispaperaimsatfindinganintuitiveandeasytousemodel,capableofexpressingthemostrelevantcharacteristicsofaballscrewfeeddrivewithrespecttotheirapplicationinmachinetools.Generallyspokenaballscrewdrivecanbecharacterizedasasystemwiththreedi

8、fferenttypesofeigenmodes:axial,rotationalandflexuralmodes.Typicallythefirstaxialandrotationalmodeoftheballscrewshowadominantinfluenceontheoveralldynamicswhiletherelevanceofhigherordermodesformosttechnicalapplicationsisrathersmall.Theexcitation