低速走丝电火花线切割机数控系统的研究与应用

i1.IPC+I/O2.WindowsVC++ADO3.4.LS-WEDMLS-WEDMPC/IPC+DSPLS-WEDMADOiiAbstractWiththeincreasingofthedemandofhighpreciseproductintheDie&mouldindustryandmanufacturingofaviation&astronavigation,thedemandofLS-WEDMisincreasinginmarket.BynowthecompaniesinChinathatproduceLS-WEDMisveryless,justasSuzhouSanguangScience&TechnologyCo.,Ltd.SuzhouElectmachiningMachineToolResearchInstitute.Furthermore,compareforeignforerunnerproducefactory,stillexistaverybigmarginonthetechnique.Inthebackgroundofthis,weassociatewithHangzhouMachineToolGroupCo.,Ltd.toexploitLS-WEDM.Thisthesismainlycoversthefollowingfouraspectsofresearchwork:1.AccordingtothefunctiondemandofLS-WEDM,thehardwarestructureoftheNCsystemhasbeenestablished:IPCplusMotionControlCard,onthebaseofthis,motioncontrolcardandI/Ointerfacecardhavebeenselected,atthemeantimetheACServoSystemofPanasonichasbeenselectedasmachinetoolservofeedingsystem,theconnectiontomotioncontrolcardanddebugwasrealized;2.Thesystemsoftwaredesignhavebeencompletedasawhole,themulti-taskprocessinginparallelofthesystemhasbeencompletedbyusingWindowsmultiplethreadmechanism.Threadadoptsglobalvariabletocommunicate,eachthreadworkstogethertorealizetheNCsystemmotioncontrolfunctions.UsesVC++tocompleteuserinterfacedevelopment,andusesADOcompletedthecraftdatabasedesign;3.Carriedoutthemainfunctionofmotioncontrol.Motioncontrolmostlyrealizedthemachinetoolmotion’sfunctionmold,suchasStartPointReturn&HeldPointReturnetc.Thispartialfunctionisthesoulofthemachinetoolsport,thestrongorweakoffunctionreflectedtheautomaticlevelofthemachinetooldirectly;4.DiscussedLS-WEDMtoprotectthemachiningfieldbyadoptsoftwaremethodforpowerdown.ThisproblemputsforwardnotonlyfitforLS-WEDMNCsystem,itisapplicabletoallmachinetoolnumbercontrolsystemthathardwarestructureasPCorIPCplusDSP,canresolvetheproblemofpowerdownprotectionnicely.Keywords:LS-WEDM,NumberControlSystem,MultipleThread,ADO,MotionControl,PowerDownProtectionvi1.1........................................................................................32.1......................................................................................102.2..........................................................................................................112.3..................................................................................132-4..............................................................142.5..........................................................182.6..............................................................................192.7..........................................................................192.8PCB..................................................................203.1..............................................................254.1..........................................................344.2..................................................................................................364.3..................................................................................................364.4..................................................................................................374.5..................................................................................................384.6..................................................................................................404.7......................................................................................444.8..............................................................................454.9..............................................................................455.1..................................................485.2..........................................495.3..................................................545.4..................................................................................................545.5..........................................................................................555.6..............................................................................................565.7..........................................................................................566.1M68HC908QY4..................................586.2LS-WEDM...............................................................................606.3..............................................................................................616.4..............................................................................................6211.1[1]AMT(AdvancedManufacturingTechnology)80[2][3]1994199621/ATMTRPATPSIMAMANTECH[4]2199520002002IT2006-30[4]198919952004[4]6[4]20MEDEAMEDEA+GDP35%[5]1.1[3]FMSCIMSIMS31.1----------------[6][7]1.2(WEDM)(EDM)[8]4HS-WEDM--HighSpeedWireCutElectricalDischargeMachining8~10m/s(LS-WEDM--LowSpeedWireCutElectricalDischargeMachining)0.2m/s292005[9]20052400200480050%1329200580003.51.3500mm2/minRa0.05mTkm1m[14][10]545sSodick2001AQ550LCAD/CAM[11]CADCAMCAD/CAMCAD/CAMHuang.Y.HZhang.WK.P.Rajurkar[10]6M.T.Yan,Y.S.Lia[13][11]613[12]1%~6%WEDM71.41.4.1[15][16]81.4.2Windows2