基于组件的钣金综合排样子系统的研究与开发

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1、东南大学硕士学位论文基于组件的钣金综合排样子系统的研究与开发姓名：张兴发申请学位级别：硕士专业：机械制造及其自动化指导教师：许超20030301东南大学硕士学位论文ASyntheticNestingSolverbasedonCOMAbstractThesheetmetalproductsarewidelyusedinmanyfieldsofindustryequipmentandcommodity．InthesheetmetalmanufacturingthelayoutofthepartseffectsgreatlyonthecostofproductsSO

2、thatithasbeenoneofthekeyresearchtopicsformanyyearsintheaspectoffabrication．BasedontheinvestlgatiorLandanalysisoftheexistedresearchandsoftware．theauthorinthedissertationpresentsanewoptimalalgorithmnamedSyntheticAlgorithrusOnSheetmetalNesting，inwhichnotonlyconsidersthecostofmaterial．b

3、ut·alsoinvolvesinthefactorsofthetechnologiessynthetically．Inthealgorithm，fournestingstrategiesaredesigned，whichareforsinglerectanglepartnesting，singleirregularpartnesting，multipanofrectanglepartsnesting，andmultipartofirregularnesting．Tosolvethesinglerectanglepartlayout，analgorithmof

4、optimizationnamedYFSS，YFirstSteppingSearchWaspresentedtogetaglobaloptimumnesting．Italsocanrealizethemanagementofthemarginofsheetsduringthelayout．Forsinglekindofirregularparts，atotaloptimalnestingalgorithmiSpresentedintheapplicationofblanksheetandstripsheet．Formulti-typeofrectangular

5、parts，itispracticabletoUSeadynamicoptimalsearchstrategy,byheuristicandrB·cruisingthesystemcartobtainaglobaloptimalschemewiththefunctionofpartinsidenesting．Themulti哪peofirregularpartnestingistransformedtoanestingproblemofmulti‘typeofrectanglepartsbythealgorithmofMER，aminimumenclosedr

6、ectangular．Inordertomakethealgorithmseffectively,theauthoralsopaidmoreattentionontheore．processingforsimplifyingandnormalizingthecontoursorprofilesofpartdrawings．AllofthesemethodscanbeappliedOntheprocessingofpuneh，rightangleShear,lasercutting，andcombinedpunchandshearwithvarietyofreq

7、uirementssuchaspanpriority,givenpanquamity,theprofilewithtoolpath，andthemallagementsofremainmaterial．ThesystemWasdevelopedonthebasisofcommonobjectmodel(cOM)technologywithaunitedsystemdatabase．Itconsistsofataskconfiguremodule，anestingoptimizedmodule．andagraphicpostprocessormodule．Pra

8、cticeshowsthesolver