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1、2011ThirdInternationalConferenceonMeasuringTechnologyandMechatronicsAutomationDesignofatwo-spindleCNCmachinetoolapplicationsfordentalrestorationLEIXiao-bao,LIAOWen-he,ZHANGLinCollegeofMechanicalandElectricalEngineering,NanjingUniversityofAeronautics&AstronauticsNanjing,Jiangsu,P.R.Chin
2、a210016lei8080@126.comAbstract—Inthiswork,atwo-spindleCNCmachinetoolusedmatureCAD/CAMproductsavailable[3,4].Inviewofthis,fordentalrestorationsisdesigned.InviewofthefactthatitswedevelopedanadvancedsmalldentalrestorationCAMspecialcharacteristicsoftheapplications,themechanicalsystems.Inth
3、ispaper,thestructureofthetwo-spindlestructureandmainpartofthemachinetoolhavebeendesignedCNCmachinetoolwhichusedbydentistintheclinictoandchosenwithcarefulcalculation.Thecharacteristicsofmachiningdentalprosthesishasbeenexpounded.dentureprocessinghavebeenanalyzedbyusingHfunctionalanalysis
4、approachH,then,themechanicalstructureoftheprocessingsystembeensetupandtheHperformanceparameterHofkeycomponentsinsystemalsobeenHprovideHdafterthenecessaryfunctionofmachinetoolhavebeenclearlydefined.Themachinetoolisequippedwithahighspeedelectro-spindledrivenbycomputerizedvelocityandcanro
5、tatingatamaximumspeedof60,000rpm,thedrivenuniteisequippedwithsteppingmotorforitsbettermotionprecisioncontrol.ThefiniteelementmodelofmachinetoolasawholewasestablishedontheAnsysWorkbenchandtheanalysisonitsdynamiccharacteristicswascarriedout.Theweakpartofthestructurewaslocatedbyapplyingth
6、ismethod,whichwillprovidetechnologysupportfortheoptimizationdesignofthestructure.Figure1.ThestructureofaCAD/CAMdentalrestorationsystemKeywords-dentalrestoration;machinetool;structure;modalanalysis;II.1BTHESTRUCTUREOFMACHINETOOLA.5BDesignrequirementsI.0BINTRODUCTIONThemachinetoolisdesig
7、nedtofabricatedentalInrecentyears,alongwiththecontinuousprosthesis,thecharacteristicoftheteethissocomplex,andimprovementofpeople'slivingstandards,theproblemoftherearemanymarginalridges,grooves,anddentalcusps.dentalrestorationhasHattractHedmoreandmoreattention,inThefeaturesforthelower
