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Chapter 7 The Application of Computer in Design and Manufacture of Mold and Die（计算机在模具设计与制造中的应用）

Chapter 7 The Application of Computer in Design and Manufacture of Mold and Die（计算机在模具设计与制造中的应用）

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页数：19页

时间：2019-10-19

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1、Chapter7TheApplicationofComputerinDesignandManufactureofMoldandDie（计算机在模具设计与制造中的应用）Lesson24ComputersandCAD/CAMLesson24ComputersandCAD/CAMComputersfirstappearedinthe1940'x.Theearlyinventionswerebulky,cumbersometouseandperformedcomputationsratherslowlyincomparisontomoderndigitalcomputers.They

2、advancedfrommechanicalrelaystovacuumtubestotransistorstosiliconchips.Computerstodayaremorecompact,fasterandlessexpensivethantheirpredecessors.Todaysomemicrocomputerscanhandlethecomputationsofearlydaymain-frames.Technologicaladvancesinthisfieldhavebeentrulydramatic.BACKNEXTLesson24Computersa

3、ndCAD/CAMTheapplicationareasofcomputershavealsogrownrapidly.Computersarewidelyusedinthefieldsofengineering,business,educationandmedicine.However,themostspectaculargrowthhasbeenintheareaofCAD/CAM-ComputerAidedDesignandComputerAidedManufacture.Thisnewtechnology,whichemergedwithinthelastdecade

4、orso,hashelpedtoincreaseengineeringproductivitytremendously.HigherproductivityisprobablytheprimaryconsiderationthatinfluencesmostpotentialuserstoacquireaCAD/CAMsystem.CAD/CAMprovidestheintegrationofdesign,analysisandBACKPREVNEXTLesson24ComputersandCAD/CAMmanufacturingfunctionsintoasystemwhi

5、chisavailabletotheuserathisfingertips.Inaddition,otherroutineandmonotonous(butimportant)taskssuchasthepreparationofbillsofmaterials,costing,productionscheduling,etc.maybeperformedautomaticallyusingthesamecomputernetwork.AnothermajorbenefitintheuseofCAD/CAMisreducedleadtimefromconcepttodesig

6、ntomanufacture.Productdevelopmentcostcanalsobereduceddramaticallybecauseanalysissuchasthefiniteelementmethodcanbeinterfacedwithdesigntoarriveattheoptimumdesignwithinaveryshorttime.BACKPREVNEXTLesson24ComputersandCAD/CAMCAD/CAMandAnalysisarebestusedinaninteractive,computergraphicsenvironment

7、toprovidesolutionstoengineeringproblemsasillustratedinFig.24-1.Thegeometryandtopologyofthepartandotherparameterssuchasmaterialpropertiesarestoredinacommondatabasewhichcanbeaccessedbyanyoneofthefunctions.Analysissuchasfiniteelementmethods,upperboundmethod

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