英文文献以及翻译-Boolean-operations-for-3D-simulation-of-C.doc
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英文文献以及翻译-Boolean-operations-for-3D-simulation-of-C.doc

英文文献以及翻译-Boolean-operations-for-3D-simulation-of-CNC-machining.doc

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Booleanoperationsfor3DsimulationofCNCmachiningofdrillingtoolsDaniTost*,AnnaPuig,Lluı´sPe´rez-VidalSoftwareDepartment,PolytechnicalUniversityofCatalonia,SpainAccepted25April2003AbstractThispaperaddressesthesimulationofdrillingtoolsCNCmachining.Itdescribesanovelapproachforthecomputationoftheboundaryrepresentationofthemachinedtools.MachiningconsistsofasequenceofBooleanoperationsofdifferencebetweenthetoolandthegrindingwheelsthroughtime.TheproposedmethodperformsthedynamicBooleanoperationsoncrosssectionsofthetoolanditreconstructsthe3Dmodelbytilingbetweenthecrosssections.Themethodisbasedonclassicalcomputationalgeometryalgorithmssuchasintersectiontests,hullcomputations,2DBooleanoperationsandsurfacetiling.Thisapproachisefficientanditprovidesusercontrolontheresolutionoftheoperations.AbstractThispaperaddressesthesimulationofdrillingtoolsCNCmachining.Itdescribesanovelapproachforthecomputationoftheboundaryrepresentationofthemachinedtools.MachiningconsistsofasequenceofBooleanoperationsofdifferencebetweenthetoolandthegrindingwheelsthroughtime.TheproposedmethodperformsthedynamicBooleanoperationsoncrosssectionsofthetoolanditreconstructsthe3Dmodelbytilingbetweenthecrosssections.Themethodisbasedonclassicalcomputationalgeometryalgorithmssuchasintersectiontests,hullcomputations,2DBooleanoperationsandsurfacetiling.Thisapproachisefficientanditprovidesusercontrolontheresolutionoftheoperations.q2003ElsevierLtd.Allrightsreserved.Keywords:CNCsimulations;Boresmachining;Computationalgeometry;Booleanoperations;Surfacetiling1.IntroductionMostoftheresearchonCNCinCADiscenteredontheautomaticcomputationoftoolpaths[5,13].Givenafinaltooldesign,theoptimaltrajectoriesofthetoolandthegrindingwheelsmustbecomputedyieldingasfinalresulttheCNCcode.Machiningsimulationandverificationhasexactlytheoppositegoal:tocalculatethetoolstartingfromtheCNCcodeandfromageometricalmodelofthemachine,thewheelsandthetoolbeforemachining.Thissimulationhasthreemainapplications[6].First,itdetectseventualcollisionsbetweenthet