散热器主片成形工艺优化及组合模具设计

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1、哈尔滨工业大学工程硕士学位论文摘要板料成形技术是一种广泛应用于汽车、电器、船舶、航空航天、兵器等z业部门的塑性加工方法，在制造业中占有极其重要的地位。散热器主片板料成形技术是决定散热器可靠性的关键技术，是评价散热器生产技术水平的一项重要因素。本文采用板料减薄试验以及板料胀形正交试验深入地分析了具有多排小长扁圆孔高翻边零件的成形工艺。确定了散热器主片的合理成形工艺，这为散热器主片生产模具的优化设计奠定了理论依据。利用最小二乘法对圆角毛坯合理形状设计进行了探索，对于经过拉延、翻边及不需后序修边而保证盒形件端面基本平齐的毛坯合理形状设计提出

2、了新的方法。建立了散热器主片类零件不需后序修边的毛坯合理形状设计的有效数学模型。为便于实际应用，基于Windows操作系统，在VisualFoxPro平台上编制了可视化的散热器主片毛坯合理形状设计程序。本文对传统的散热器主片生产工艺做了改进，由传统的五道工序简化为两道工序。基于改进工艺开发了实用模具并调试成功。根据散热器主片翻孔成形的理论分析及改进的散热器主片生产工艺，开发了适合多品种散热器主片生产的组合模具。关键词板料成形;胀形成形;冲压模具;散热器主片;最小二乘法哈尔滨工业人学工程硕卜学位论文AbstractMetalsheetf

3、ormingisanimportantbranchinmetalplasticformingfield,whichplaysanimportantroleinmanufacturingindustryandiswidelyappliedinindustriessuchasautomobile,electricalappliance,shipbuilding,aeronauticsastronautics,weaponryandetc.Thesheetformingtechniqueofaradiatorheaderisoneofthe

4、keytechniquesdeterminingthereliabilityofaradiator;whatismore,itisusedtoevaluatethetechnologicallevelofradiatormanufactureUsingthicknessreducingtestandorthogonaltest,theformingtechniquesforpartswithmulti-arrayslittleroundlongthinholesandhighstraightsidesareanalyzed.Thepr

5、operformingtechniqueofradiatorheaderisconfirmedanditisthetheoryfoundationoftheradiatorheaderdiedesign.Usingleastsquaremethod,designofsuitableshapeofablankmetalsheetwithroundcornersisattempted.Anewmethodisputforwardedtoensurethepropershapeoftheblankthatisdrawnandflangedw

6、ithoutfollowingtrimmingprocessThemathematicmodelofpropershapeisestablished.Tomakeitmoreconvenientinpractice,aprogramwithvisualinterfaceisdevelopedundertheoperationalsystemofWindows.Thetraditionalradiatorheadermanufacturingtechniqueisimprovedinthispaper.Theprocessingstep

7、saresimplifiedfromfivetotwo.Accordingly,theradiatorheadersformingdiesaredevelopedandadjustedsuccessfully.Theadjustmentofthediesandthepreviousanalysisofholesflangingtheoryarethebasesofdevelopmentofmodulardieswhicharefitforthemanufacturingofmulti-typeradiatorheaders.Keywo

8、rdsmetalsheetforming;bulgingtechnique:punchingdies:radiatorheader;leastsquaremethod11哈尔滨工业大学S程硕士学位论文第1章绪论1.1引言