中英文中英文文献翻译关于数控车床和换刀系统.docx

中英文中英文文献翻译关于数控车床和换刀系统.docx

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中英文中英文文献翻译关于数控车床和换刀系统

英文原文

OntheNClatheandtoolchangingsystem

CNCmachinetoolnumericalcontrolmachinetools（Computernumericalcontrolmachinetools）abbreviation,isprovidedwithaprogramcontrolsystemofautomaticmachinetools.Thelogiccontrolsystemcandealwiththecontrolcodeorothersymbolicinstructionspecifiedprogram,anddecodingthedigitalcode,saidinformationcarrier,throughthenumericalcontroldeviceinput.AfterprocessingbyCNCdevicecontrolsignals,controlthemachinemovements,bydrawingtheshapeandsizerequirements,willbeautomaticallyprocessedbytheparts.

Features:

CNCmachinetooloperationandmonitoringofallcompletedinthenumericalcontrolunit,itisthebrainofCNCmachinetools.Comparedwiththegeneralmachinetools,CNCmachinetoolshasthefollowingcharacteristics:

●theprocessingobjectadaptability,adapttothecharacteristicsofmoldproductssuchasasingleproduction,providetheappropriateprocessingmethodfordieandmouldmanufacturing;

●highmachiningaccuracy,processingwithstablequality;

●cancoordinatelinkage,processingcomplexshapeparts;

●machiningpartschange,onlyneedtochangetheprogram,cansavethepreparationtimeofproduction;

●themachineitselfhighprecision,rigidity,canchoosetheamountofprocessinggood,highproductivity（typically3to5timesthatofordinarymachinetool）;

Themachineisahighdegreeofautomation,reducinglaborintensity;

●conducivetotheproductionmanagementmodernization.TheuseofCNCmachinetoolsandthestandardcodeofdigitalinformationprocessing,informationtransmission,theuseofcomputercontrolmethod,haslaidthefoundationfortheintegrationofcomputeraideddesign,manufacturingandmanagement;

●ontheoperatorsofhigherquality,higherdemandsfortherepairofthetechnicalstaff;

●highreliability.

Composition:

CNCmachinetoolsingeneralbytheinputmedium,man-machineinteractiveequipment,CNCequipment,feedservodrivesystem,spindleservodrivesystem,theauxiliarycontroldevice,feedbackapparatusandadaptivecontroldeviceetc..[4]inNCmachining,NCmillingprocessingisthemostcomplex,needtosolvemostproblems.NCprogrammingofNClineinadditiontoCNCmilling,cutting,CNCEDM,CNClathe,CNCgrinding,eachwithitsowncharacteristics,servosystemistheroleofthemotionsignalisconvertedintothemachinemovingpartsfromthenumericalcontroldeviceofpulse.Concretehasthefollowingparts:

thestructureofCNCmachinetools.

Driver:

heisdrivingpartsofCNCmachinetools,actuator,includingspindledriveunit,feedingunit,spindlemotorandfeedmotor.Hethroughtheelectricorelectro-hydraulicservosystemtorealizethespindleandfeeddriveunderthecontrolofnumericalcontroldevice.Whenseveralfeedlinkage,cancompletethepositioning,processingline,planecurveandspacecurve.

Themainperformance

（1）themaindimensions.

（2）thespindlesystem.

（3）feedsystem.

（4）toolsystem.

（5）electrical.Includingthemainmotor,servomotorspecificationsandpoweretc..

（6）coolingsystem.Includingthecoolingcapacity,coolingpumpoutput.

（7）dimensions.Expressedaslength*width*height.

DevelopmenttrendofCNClathe:

Highspeed,precision,complex,intelligentandgreenisthegeneraltrendinthedevelopmentofCNCmachinetooltechnology,inrecentyears,madegratifyingachievementsinpracticalityandindustrialization.Mainlyinthe:

1machinetoolcompositetechnologytofurtherexpandwiththeCNCmachinetooltechnology,compositeprocessingtechnologymatures,includingmilling-carcompound,carmillingcompound,car-boring-drill-gearcuttingcompound,compositegrinding,forming,compositeprocessing,precisionandefficiencyofmachiningisgreatlyimproved."Onemachineisaprocessingfactory","onecard,completeprocessing"conceptisbeingacceptedbymorepeople,thedevelopmentofcompoundprocessingmachinetoolisthetrendofdiversified.

Intelligenttechnology2CNCmachinetoolshaveanewbreakthrough,intheperformanceofNCsystemhasbeenreflectedmore.Suchas:

automaticallyadjusttheinterferenceanti-collisionfunction,afterthepowerofworkpieceautomaticallyexitsafetypower-offprotectionfunction,machiningpartsdetectionandautomaticcompensationfunctionoflearning,highprecisionmachiningpartsintelligentparameterselectionfunction,processautomaticeliminationofmachinevibrationfunctionsintothepracticalstage,intelligentupgradethefunctionofmachineandquality.

The3robotsenableflexiblecombinationofflexiblecombinationofhigherefficiencyofrobotandthehostarewidelyused,makeflexiblelinemoreflexible,extendingthefunction,flexiblelineshortenfurther,moreefficient.Robotandmachiningcenter,millingcompositemachine,grinder,gearprocessingmachinetool,toolgrindingmachine,electricmachine,sawingmachine,punchingmachine,lasercuttingmachine,watercuttingmachineetc.variousformsofflexibleunitandflexibleproductionlinehasalreadybeguntheapplication.

4precisionmachiningtechnologyhasthemachiningprecisionofCNCmetalcuttingmachinetoolsfromtheyarnintheoriginal（0.01mm）uptomicronlevel（0.001mm）,somevarietieshasreachedabout0.05μM.MicrocuttingandgrindingmachiningofultraprecisionCNCmachinetools,precisioncanreachabout0.05μm,shapeprecisioncanreachabout0.01μM.Specialprocessingprecisionbyusingoptical,electrical,chemical,energycanreachnanometerlevel（0.001μm）.Byoptimizingthedesignofmachinetoolstructure,machinetoolpartsofultraprecisionmachiningandprecisionassembly,usinghighprecisionclosedloopcontrolandtemperature,vibrationandotherdynamicerrorcompensationtechnology,improvethegeometricaccuracyofmachinetoolprocessing,reducetheshapeoferror,surfaceroughness,andintothesubmicron,nanosuperfinishingti

The5functionalcomponenttoimprovetheperformanceoffunctionalcomponentsareatahighspeed,highprecision,highpowerandintelligentdirection,andobtainthematureapplication.AfulldigitalACservomotoranddrivedevice,hightechnologycontentoftheelectricspindle,linearmotor,torquemotor,linearmotioncomponentswithhighperformance,applicationofhighprecisionspindleunitandotherfunctionparts,greatlyimprovingthetechnicallevelofCNCmachinetools.

ThefeeddrivesystemofCNClathe:

Effectoffeeddrivesystem,

ThefeeddrivesystemofCNCmachinetoolswillbereceivedpulsecommandissuedbythenumericalcontrolsystem,andtheamplificationandconversionmachinemovementscarrytheexpectedmovement.

Two,thefeedingtransmissionsystemrequirements

InordertoguaranteethemachiningaccuracyofNCmachinetoolishigh,thefeeddrivesystemoftransmissionaccuracy,sensitivityhigh（fastresponse）,stablework,highstiffnessandfrictionandinertiasmall,servicelife,andcanremovethetransmissiongap.

Categorythree,feeddrivesystem

1,steppingmotorservosystem

GenerallyusedforNCmachinetools.

2,DCservomotorservosystem

Powerisstable,butbecauseofthebrush,thewearresultinginuseneedtochange.Generallyusedformiddle-gradeCNCmachinetools.

3,ACservomotorservosystem

Theapplicationisextremelywidespread,mainlyusedinhigh-endCNCmachinetools.

4,thelinearmotorservosystem

Nointermediatetransmissionchain,highprecision,thefeedspeed,nolengthlimit;butthepoorheatdissipation,protectionrequirementsareparticularlyhigh,mainlyusedforhigh-speedmachine.

Drivingcomponentfour,feedsystem

1,theballscrewnutpair

NCmachining,therotarymotionintolinearmotion,sotheuseofscrewnuttransmissionmechanism.NCmachinetoolsarecommonlyusedontheballscrew,asshowninFigure1-25,itcanbeaslidingfrictionintorollingfriction,meetthebasicrequirementsofthefeedsystemtoreducefriction.Thetransmissionsideofhighefficiency,smallfriction,andcaneliminatethegap,noreverseairtravel;butthemanufacturingcostishigh,cannotlock,sizeisnottoobig,generallyusedforlinearfeedinsmallCNCmachinetool.

2,rotarytable

InordertoexpandthescopeoftheprocessofNCmachinetools,CNCmachinetoolsinadditiontomakelinearfeedalongtheX,Y,Zthreecoordinateaxes,oftenalsoneedacircumferentialfeedmovementaroundYorZaxis.CircularfeedmotionofCNCmachinetoolsingeneralbytherotarytabletorealize,formachiningcenter,rotarytablehasbecomeanindispensablepartof.

RotarytableofcommonlyusedCNCmachinetoolsintheindexingtableandNCrotarytable.

（1）indexingtable

Indexingtablecanonlyfinishdividingmovement,notcircularfeed,itisinaccordancewiththeinstructionsintheNCsystem,whenindexingwillworktogetherwiththeworkpiecerotationangle.Whenindexingcanalsousemanualindexing.Provisionsofindexingtableisgenerallyonlyrotaryangle（suchas90,60and45degree）.

（2）NCrotarytable

NCrotarytableappearancesimilartotheindexingtable,buttheinternalstructureandfunctionisnotthesame.ThemainfunctionoftheNCrotarytableisbasedonthenumericalcontroldevicesendscommandpulsesignal,completecircumferentialfeedmovement,variousarcprocessingandsurfaceprocessing,itcanalsobegraduationwork.

3,guide

Railisanimportantpartoffeeddrivesystem,isoneofthebasicelementsofthestructureofmachinetool,rigidity,precisionandaccuracyofNCmachinetoolwhichdeterminestoalargeextentretention.Atpresent,guidetheNCmachinetoolareslidingrail,rollingguidewayandhydrostaticguideway.

（1）slidingguide

Slidingguiderailhastheadvantagesofsimplest