直接自适应切片在理想材料零件的CAD模型（IFMC）外文翻译(英）.doc

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1、CHINESEJOURNALOFMECHANICALENGINEERINGv01．18，No．1，2005XUDaomingJiaZhenyuanGuoDongmingKeyLaboratoryforPrecisionandNon-traditionalMachiningTechnologyofMinistryofEducation，DalianUniversityofTechnology,Dalian．ChinaDIRECTANDADAPTIVESLICINGONCADMODELOFIDEALFUNCTIONALMATERIALCOMPONENTS(IFMC)Abstract：Abran

2、dnewdirectandadaptiveslicingapproachisproposed．whichcanapparentlyimprovethepartaccuracyandreducethebuildingtime．At1easttwostagesareincludedinthisoperation：gettingthecrossingcontourofthecuttingplanewiththesolidpartanddeterminingthelayerthickness．ApartfromusualSPIalgorithm，slicingofthesolidmode1hasi

3、tsspecialrequirementsEnablingthecontour1inesegmentsofthecross—sectionaslongaspossibleisoneofthem．whichisforimprovingmanufacturingefficiencyandisreachedbyadaptivelyadjustingthestepdirectionandthestepsizeateverycrossingpointtoobtainoptimizedsecantheight．Thelayerthicknessdeterminationcanbedividedinto

4、twophases：thegeometry—basedthicknessestimationandthematerial—basedthicknessverifying．Duringtheformerphase．thegeometrytoleranceisdividedintotwoparts：avarietyofcurvesareapproximatedbyacirculararc，whichintroducesthefirstpart，andthedeviationerrorbetweenthecontourlineinLMprocessandthecirculararcgenerat

5、esthesecondpartThelatterphaseismainlyverifyingthelayerthicknessestimatedintheformerstageanddetermininganewoneifnecessary．Inaddition．anexampleusingthisslicingalgorithmisalsoillustrated．Keywords：RapidprototypingIdealfunctionalmaterialcomponentsDirectandadaptiveslicingSurface／planeintersectionMarchin

6、g0INTRODUCTIONIdealfunctionalmaterialcomponents(IFMC)isanovelclassofmaterialcomponentrequiredforthedevelopmentofscienceandtechnology．Rapidprototypingandmanufacturing(RP&M)technology,orcalledSFF(solidfreeformfabrication)technology，isafundamentaltechnologyformanufacturingofIFMC．whichisbasedontheprin

7、cipleofmanufacturinglayerbylayer．Comparedwithtraditionalmanufacturingprocesses，thoseofapplyingRP&Mtechnologycurrentlyaretime-consumingwithpartdependence，butflexibleinhandlingpartswithshapesofwiderangeSlicingofthe