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国产数控蠕动磨床急停回退功能开发与应用 国产数控蠕动磨床急停回退功能开发与应用 Abstract: Thedevelopmentandapplicationoftheemergencystopandback-offfunctionofdomesticCNCcreepfeedgrindingmachineareintroducedinthispaper.Thenecessityofaddingthefunction,thedesignofthesystem,theimplementationofthecontrolprogramandthetestresultsarediscussedindetail.Theapplicationofthefunctionnotonlyimprovesthesafetyandreliabilityofthemachinetooloperation,butalsoreducestheriskofdamagecausedbythesuddenstopofthespindleortheworkpieceduringthegrindingprocess. Introduction: CNCcreepfeedgrindingmachineisakindofhighprecisionmachinetoolusedforgrindingcomplexshapesandhighprecisionparts.Itiswidelyusedinaerospace,engineeringmachinery,automotiveindustryandotherfields.Withthedevelopmentofindustry,therequirementsfortheperformanceandsafetyofmachinetoolsarebecominghigherandhigher. Whenthemachinetoolisrunning,accidentssuchassuddenstopofthespindleorworkpiecemayoccurduetovariousreasons,suchaspowerfailure,humanerrororequipmentfailure.Thisnotonlyposesaseriousthreattothesafetyoftheoperatorandtheequipment,butalsobringsahugeeconomiclosstotheuser. Therefore,itisnecessarytodevelopandapplyemergencystopandback-offfunctiontothedomesticCNCcreepfeedgrindingmachine,soastopreventaccidentsandimprovethesafetyandreliabilityofthemachinetool. Designandimplementationofthesystem: Theemergencystopandback-offfunctionofdomesticCNCcreepfeedgrindingmachineismainlycomposedofthreeparts:hardwaredesign,controlprogramdesignandtesting. 1.Hardwaredesign: Thehardwaredesignmainlyincludestheselectionofemergencystopswitchandback-offswitch,aswellasthewiringandinstallationofthetwoswitches. Theemergencystopswitchisasafetydeviceusedtostopthemachinetoolimmediatelywhenanemergencyoccurs.Theswitchisusuallyplacedinaprominentpositiononthecontrolpanelorinaplacethatiseasilyaccessibletotheoperator.Whentheswitchispressed,thecontrolsystemwillsendasignaltostopthespindleandthefeedaxis,andthemachinetoolwillimmediatelystoprunning. Theback-offswitchisusedtobackwardthefeedaxisofthemachinetoolafteremergenc