板材充液拉深动态加载系统开发与应用

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1、第49卷第24期机械工程学报vo1．49NO．242013年12月JOURNAL0FMECHANICALENGINEERINGDec．2013DoI：10．3901，JME．2013．24．060板材充液拉深动态加载系统开发与应用孟宝万敏吴向东袁胜2许旭东2刘杰(1．北京航空航天大学机械工程及自动化学院北京100191；2．成都飞机工业集团公司制造工程部成都610092；3．成都飞机工业集团公司钣金厂成都610092)摘要：液室压力和压边力加载路径是充液拉深工艺中决定零件成形质量的关键工艺参数。针对传统被动加压方式加载路径单一，液室压力较低，不能满足复杂结构零件和高强度材料的成形要

2、求，提出采用闭环控制技术实时调节液室压力和压边力的动态加载方式。设计可控压边和高压增压系统，并应用基于上、下位机的检测控制系统实时调节凸模速度、压边力和液室压力满足设定的工艺参数。在动态加载系统上进行异型结构不锈钢零件的充液拉深试验，动态加载路径下试验件一次整体成形，且表面质量好，贴模精度高。结果表明，充液拉深动态加载系统能够实现复杂加载轨迹和局部高压，适用于复杂结构和高强度材料零件的成形制造。关键词：板材充液拉深液室压力动态加载闭环控制中图分类号：TG394DevelopmentofDynamicLoadingSystemforSheetMetalHydrodynamicDeep

3、DrawingandItsApplicationMENGBaoWANMinWUXiangdongYUANShengXUXudongLIUJie(1．SchoolofMechanicalEngineeringandAutomation，BeihangUniversity,Beijing100191；2．ManufacturingEngineeringDepartment,ChengduAircraftIndustrialCorporation，Chengdu610092；．3．SheetMetalManufacturingPlant，ChengduAircraftIndustrial

4、Corporation，Chengdu610092)Abstract：Theloadingpathsofcavitypressureandblankholdingforce(BHF)arethekeyparametersimmediatelyrelatedwiththeformingqualityinhydrodynamicdeepdrawingprocess．Aimingattheissuesofsingleloadingtrajectoryandlowliquidpressureinthepassive-pressurizationmodel，whichCannotsatisf

5、ytheneedofthecomplexstructuralcomponentsandhighstrengthmaterials，adynamicloadingmethodemployingclosed-loopcontroltechniquetorealizetherealtimeadjustmentofcavitypressureandBHFispresented．Thecontrollableblankholdingsystemandhighpressure&pressurizationdevicearedesigned．andthecontrolsystembasedonu

6、pperandlowercomputersisappliedtoregulatepunchvelocity,BHFandcavitypressure，whichcanchangeinrealtimeaccordingtoassignedcraftCHIVES．Theprocessexperimentsconductedonthedynamicloadingsystemimplementtheintegralandprecisionformingofatypicalstainlesssteelpartwithcomplexfeatures，andthetestpartsunderdy

7、namicloadingpathshavegoodsur~cequalityandhighformingprecision．TheresultsindicatethatthedynamicloadingtechnologyCanimplementcomplicatedloadingpathsandpartialhighpressure，whicharepropitioustoformcomplicatedstructuralcomponentsandhigh-stre