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《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》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
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
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