教学材料《数控技术英语》-Unit 8 Operation Panel of NC

TextMachinecontrolpanelcontrolsprogramandprocessofmachining.Thefollowingaresomecollectionsofcontrolpaneloperations:1.EMERGENCYSTOP“EMERGENCYSTOP”isusedwhenthemachineisindangerorinemergencyduringoperations.Ifthisbuttonispressed,thefeedandrotationofthetoolisstoppedandthecontrolsystemofthecomputeristurnedoff.Atthistime,thefeedingunitandspindlestopworking.Thatistosay,thefeedingunitintheelectriccontrolcabinetiscutout.ToresettheEMERGENCYSTOPbutton,pushitinandturnitclockwise.Thenyoucanturnthemachineon,zeroit,andeliminatethecausethatisforcedtheuseoftheEMERGENCYSTOPbutton.下一页返回TextAdditionally,checkwhetheranyalarmsignsappearedonthescreenorwhetherthemachinestoppedduringtheexecutionofthecyclerespondingtoatoolchangeoratablechange.Ifsuchisthecase,thenrepeatthesamecommand(thecyclecommand)withtheswitchpositionedonMDI(manualdatainput)tomakesurethatthecyclehasbeencompleted.2.Modeselection:Theoperationmodeofthemachineisdecidedbythemodeselectionkeysinhandheldunitandcontrolpanel.下一页上一页返回Text3.EDIT:PositioningtheswitchintheEDITmodeenablesyouto:●entertheprogramtomachinememory●Enteranychangestotheprogram●Transferdatafromtheprogramtoatape(entertheprogramfromacomputertoNCmachinesbyatapeorcommunicationline)●Checkthememorystoragecapacity4.MEMORY：PositioningtheswitchintheMEMORYmodeenablestheNCcommandsstoreinthememorytobeexecuted.下一页上一页返回Text5.MDI:PositioningtheswitchintheMEMORYmodeenablestheautomaticcontrolofthemachinebyusingtheinformationenteredintheformofblockswithoutinterferingwiththebasicprogram.Thisisoftenusedduringthemachiningofworkpieceholdingequipment.Itcorrespondstosinglemoves(millingsurfaces,drillingholes),descriptionsofwhichneednotbeenteredtomemorystorage.MDIcanalsobeusedduringtheexecutionoftheprogram.Forexample,supposeyouhaveomittedthecommandS350M03intheprogram.Inordertocorrecttheomission,turnontheSINGLEBLOCKswitchandthepositionselectorswitchtotheMDImode.UsingMDI,youcanenterfunctionsS350andM03.EnterthiscommandthroughINPUTandSTART.TheselectorswitchispositionedintheMEMORYmodetocontinuetheexecutionoftheprogramfrommemory.下一页上一页返回Text6.HANDLE:PositioningtheswitchintheHANDLEmodeallowsformanualcontrolofthemovementsofthetablewiththeuseofthehandwheel,alongoneoffouraxes:X,Y,Z,orB.Byturningthehandwheelclockwise,youcandisplacethetoolinapositivedirectionwithrespecttothepositionofthecoordinatesystem.Byturningthehandwheelcounterclockwise,thetoolisdisplacedinanegativedirectionwithrespecttothepositionofthecoordinatesystem.Theshaftofthehandwheelcontains360notches,eachofwhichcorrespondsto1°ofrotation.Turningthehandwheel,youcanfeelthedisplacementfromonenotchtothenext.Handlingthemachinemanually,usetheadditionalspeedswitch(thehandlemultiplier),whichcanchangethevalueofdisplacementequaltooneskiponthescaleofthehandwheel.Onefullrevolutionofthehandwheel(360°)correspondstounitsonthescale.下一页上一页返回Text7.JOG:settingtheselectorswitchintheJOGmodeallowstheselectionofmanualmonotonousfeedsalongthex,y,andzaxis.WiththeselectorswitchintheJOGmode,usetheaxisbuttons(Fig.8-4),aswellastheJOGFEEDRATE(Fig.8-5)switch.8.CYCLESTART:usethisbuttonduringtheexecutionoftheprogramfromMEMORYorTAPE.WhentheCYCLESTARTbuttonispressed,thecontrollamplocatedabovethisbuttongoeson.9.FEEDHOLD:WhentheFEEDHOLDbuttonispressed,thecontrollamplocatedabovethisbuttongoeson,andthecontrollamplocatedaboveCYCLESTARTbuttongoesoff.WhentheFEEDHOLDbuttonispressed,allfeedsareinterrupted;however,therotationsarenotaffected.(Thisbuttonisusedveryrarely.)Duringtheexecutionofthethreadingcycle,FEEDHOLDcomesintoeffectafterthetapiswithdrawn.Ifthetapbreaksduringthethreadingcycle,theonlywaytostopthemachineisbypressingtheEMERGENCYSTOPbutton.下一页上一页返回Text10.SINGLEBLOCK:Theexecutionofasingleblock(Fig8-6)ofinformationisinitiatedbyturningthisswitchON.EachtimeCYCLESTARTbuttonispressed,onlyoneblockofinformationwillexecuted.Thisswitchcanalsobeusedifyouintendedtochecktheoperationofanewprogramonthemachineorifthemomentaryinterruptionofamachine’sisnecessary.11.DRYRUN:ByturningthisswitchON,alltherapidandworkfeedsarechangedtoonechosenfeed.Inordertodothis,usetheJOGFEEDRATEswitch.DRYRUNisalsousedtocheckanewprogramonthemachinewithoutanyworkactuallybeingperformedbythetool.下一页上一页返回Text12.REFERENCERETURN:Turningtheswitch(Fig8-7)ONandthenpressingbuttonsX,Y,orZcausesthemachinetoreturntothezeropositionforeachaxis.13.FEEDRATEOVERRIDE(Fig.8-8)ThisallowsthecontroloftheworkfeedsdefinedbyfunctionF.Youcanincreaseordecreasethepercentageofthevalueenteredintheprogram.14.RAPIDTRAVERSEOVERRIDE:Thisswitchreducestherapidfeedrate(G00).Ifitispositionedat100,thiscorrespondsto100%ofthefeedratethatthemachinecangenerate.UsethisRAPIDTRAVERSEbutton(Fig.8-9)toperformrapidmovementalongapreviouslychosenaxis.下一页上一页返回Text15.MACHINELOCK:Thisswitchisusedtocheckanewprogramonthemachine.Allmovementsofthetoolareblocked,whileacheckisrunonthecomputerscreen.16.CONTROLPANEL:Usually,thecontrolpanelislocatedatthefrontofthemainelectronicsystemandisequippedwithascreenandwithvariousbuttonsandswitches,asshowninFig8-10.17.POWERONANDPOWEROFF①NCsystemisalwaysturnedonafterthemainpowerswitch,locatedonthedooroftheelectriccontrolsystem,ison.②NCsystemisalwaysturnedoffbeforethemainpowerswitch,locatedonthedooroftheelectriccontrolsystem,isoff.下一页上一页返回Text18.RESET:Usedforalarmcancellationorcancellationofanoperation.Attention:Theresetbuttonisusedwhilethemachineisinworkingmode.19.CTRCHARACTERDISPLAY:Thescreenonwhichallthecharacters(addresses)anddataareshowninFig.8-11.20.DISPLAY:Thecontentsofcurrentlyactiveprogramareactivesequencenumberdisplayed(Fig.8-12).Inaddition,schedulednextandtheprogramlistaredisplayedtheprograms:上一页返回WordsandExpressionscyclen.循环,周期MDI(manualdateinput)手动数据输入Controlpanel控制面板singleblock单程序段singleoperation单步运行referencereturn基准复位electriccontrolcabinet电气控制柜emergencystop紧急停机handwheeln.手轮operationpanel操作面板modeselection模式选择multipliern.乘数下一页返回WordsandExpressionsnotchn.V型痕迹,刻痕;adj.有凹口的displacevt.替换,取代,替代,置换displacementn.取代,替代,位移momentaryadj.短暂的,瞬间的cancellationn.取消,撤销tapn.丝锥threadingcycle车缧纹,攻[套]丝(扣),扣纹sequencenumber序号tablefeed工作台进给[进刀]上一页返回Notes1.Additionally,checkwhetheranyalarmsignsappearedonthescreenorwhetherthemachinestoppedduringtheexecutionofthecyclerespondingtoatoolchangeoratablechange.

另外，在执行对应于换刀或工作台变位的循环过程中，检查屏幕上是否出现警戒信号或机床是否停止。

Whether…和whether引导的是两个并列宾语从句。2.Ifsuchisthecase,thenrepeatthesamecommand(thecyclecommand)withtheswitchpositionedonMDI(manualdatainput)tomakesurethatthecyclehasbeencompleted.

如果是这样的话，那么将开关定位在MDI模式（人工手动数据输入），重复同样命令（循环命令）来确保循环。

thenrepeat…为祈使句，with短语为介词短语用来作状语。下一页返回Notes3.PositioningtheswitchintheMEMORYmodeenablestheautomaticcontrolofthemachine.Positioning…为动名词短语，作主语，谓语为enables。4.Itcorrespondstosinglemoves(millingsurfaces,drillingholes),descriptionsofwhichneednotbeenteredtomemorystorage.它适用于单一运