基于solidworks机床夹具设计外文翻译.docx

基于solidworks机床夹具设计外文翻译.docx

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基于solidworks机床夹具设计外文翻译

2604130359

CNCCuttingTechnologyReview

Numericalcontrolhighspeedcuttingtechnology（HighSpeedMachining,HSM,orHighSpeedCutting,HSC）,isoneoftheadvancedmanufacturingtechnologytoimprovethemachiningefficiencyandquality,thestudyofrelatedtechnologyhasbecomeanimportantresearchdirectionofadvancedmanufacturingtechnologyathomeandabroad.Chinaisabigmanufacturingcountry,intheworldofindustrytransfertoacceptthefrontinsteadofback-endofthetransfer,tomasterthecoretechnologyofadvancedmanufacturing,orinanewroundofinternationalindustrialstructureadjustment,ourcountrymanufacturingindustrywillfurtherbehind.Imminentresearchonthetheoryandapplicationofadvancedtechnology.

1,high-speedCNCmachiningmeaning

HighspeedcuttingtheoryputforwardbytheGermanphysicistCarl.J.Salomoninthelastcenturyandearlythirty's.Heconcludedbyalotofexperiments:

inthenormalrangeofcuttingspeed,cuttingspeediftheincrease,willcausethecuttingtemperaturerise,exacerbatingthewearofcuttingtool;however,whenthecuttingspeedisincreasedtoacertainvalue,aslongasmorethantheinflectionpoint,withtheincreaseofthecuttingspeed,cuttingtemperaturecannotrise,butwilldecline,soaslongasthecuttingspeedishighenough,itcanbesolvedverywellinhighcuttingtemperaturecausedbytoolwearisnotconducivetothecuttingproblem,obtainedgoodprocessingefficiency.

Withthedevelopmentofmanufacturingindustry,thistheoryisgraduallypaidmoreattentionto,andattractedalotofattention,onthebasisofthistheoryhasgraduallyformedthefieldofhigh-speedcuttingtechnologyofNC,relativelyearlyresearchonNCHigh-speedMachiningTechnologyindevelopedcountries,throughthetheoreticalbasisoftheresearch,basicresearchandappliedresearchanddevelopmentapplication,atpresentapplicationshaveenteredthesubstantivestageinsomeareas.

Thehigh-speedcuttingprocessingcategory,generallyhavethefollowingseveralkindsofclassificationmethods,oneistoseethatcuttingspeed,cuttingspeedoverconventionalcuttingspeedis5-10timesofhighspeedcutting.Alsohasthescholartospindlespeedasthedefinitionofhigh-speedprocessingstandards,thatthespindlespeedishigherthanthatof8000r\/minforhighspeedmachining.Andfromthemachinetoolspindledesignpointofview,withtheproductofDNdiameterofspindleandspindlespeed,ifthevalueofDNto（5~2000）*105mm.r\/min,isconsideredtobeofhighspeedmachining.Inpractice,differentprocessingmethods,differentmaterials,highspeedcuttingspeedcorrespondingtodifferent.Isgenerallybelievedthattheturningspeedof（700~7000）m\/min,millingspeedreachesm\/min（300~6000）,thatisinthehigh-speedcutting.

Inaddition,fromthepracticalconsiderations,high-speedmachiningconceptnotonlycontainsthehighspeedcuttingprocess,integrationandoptimizationalsocontainstheprocessofcutting,isacanobtaingoodeconomicbenefitsandhighspeed,istheunityoftechnologyandbenefit.

High-speedcuttingtechnologyisinthemachinetoolstructureandmaterials,machinetooldesign,manufacturingtechnology,high-speedspindlesystem,highperformanceandfastfeedingsystem,ahighperformanceCNCsystem,toolholdersystem,highperformancetoolmaterialandtooldesignandmanufacturingtechnology,highefficiencyandhighprecisionmeasurementandtestingtechnology,themechanismofhighspeedcutting,highspeedcuttingprocessandotherrelatedhardwareandsoftwaretechnologyarefullyintegratedintothedevelopmentfoundation.Therefore,highspeedcuttingtechnologyisacomplexsystemengineering,isawiththerelatedtechnologydevelopmentandthedevelopmentoftheconceptof.

2,thesuperiorityofhigh-speedCNCmachining

Duetothelargeamplitudeoftheincreaseofthecuttingspeed,highspeedmachiningtechnologynotonlyimprovesthecuttingproductivity,andcomparedwiththeconventionalcuttingalsohassomeobviousadvantages:

first,smallcuttingforce:

inhighspeedmilling,cuttingadoptstheformofsmallquantities,highcuttingspeed,thecuttingforceisreducedby30%comparedtotheconventionalcutting,especiallytheradialcuttingforcegreatlyspindlebearing,tool,workpieceisreduced.Bothtoreducetoolwear,andeffectivecontrolofthevibrationmachiningsystem,improvethemachiningaccuracy.Second,thematerialremovalrateishigh:

theuseofhighspeedcutting,cuttingspeedandfeedrateareimprovedgreatly,thesametimethematerialremovalrateisimprovedgreatly.Thusgreatlyimprovetheprocessingefficiency.Third,thermaldeformationsmall:

inthehigh-speedcutting,cuttingheat,mostofthetimetotheworkpiecebytheoutflowofhigh-speedchipaway,sotheheatingtimeofthemachinedsurfaceisshort,notbecauseofthetemperatureriseleadstothermaldeformation,ishelpfultoimprovethesurfaceaccuracy,physicalandmechanicalpropertiesofthemachinedsurfaceprocessingmethodisbetterthanthecommon.Fourth,highprecisionmachining:

highspeedcuttingusuallyfeedisrelativelysmall,sothatthemachinedsurfaceroughnessisgreatlyreduced,atthesametimeasthecuttingforceissmallerthantheconventionalvibrationcutting,machiningsystemisreduced,themachiningprocessmoresmoothly,sothatgoodquality,canrealizehighaccuracy,lowdegreeofroughmachining.Fifth,thegreenenvironmentalprotection:

whenhighspeedcutting,workpiecemachiningtimeisshortened,theuseofenergyandequipmentrate,highprocessingefficiency,lowprocessingenergyconsumption,atthesametime,duetothehighspeedcuttingcanbeachievedevenwithoutdrycutting,reducethecuttingfluid,reducepollutionandconsumption.

Researchandapplicationofnumericalcontrolhighspeedcuttingtechnology,3

Inviewoftheabovecharacteristicsofhighspeedmachining,thetechnologyhasgreatapplicationpotentialinthefieldoftraditionalprocessingweak.Firstofall,theworkpieceforthin-wallpartsandslender,usesthehigh-speedcutting,thecuttingforceissignificantlyreduced,theheatischippingaway,canbeverygoodforusingthetraditionalmethodofthedeformationproblemcausedduetotheinfluenceofcuttingforceandcuttingheat,greatlyimprovingtheprocessingquality.Secondly,becauseofthecuttingresistanceissmall,toreducetoolwear,materialsofhighmanganesesteel,hardenedsteel,austeniticstainlesssteel,compositematerials,wear-resistantcastironisdifficulttobeprocessedbytraditionalmethods,canbestudiedusingnumericalcontrolhighspeedcuttingtechnologytoprocess.Inaddition,intheautomotive,aerospace,mold,manufacturingfield,someintegralcomponentsrequirerelativelylargematerialremovalrate,thefeedspeedCNChighspeedcuttingwiththecuttingspeedincreaseandthecorrespondingincreaseinunittime,sothatthematerialremovalrateisgreatlyimproved,thusinthemoldmanufacturing,automobilemanufacturing,aerospacemanufacturingapplicationofnumericalcontrolhighspeedcuttingtechnology,willproducetheenormouseconomicbenefits.Fourth,becauseofthehigh-speedcutting,machiningprocessisstable,thevibrationissmall,comparedwiththeconventionalcutting,highspeedcuttingcansignificantlyimprovetheprecisionof1~2,canbecancelledcompletelyfinishing,andsubsequent,adoptnumericalcontrolhighspeedcuttingtechnology,canachieveandrough,finishingontheoverallstructureofcomplexpartsinamachine,reducesthelikelihoodoflocatingerrortransferprocess,whichisalsoconducivetoimprovethemachiningaccuracy.Therefore,highspeedcuttingtechnologyhasawideapplicationprospectinprecisionmanufacturing.Aluminiummouldsuchasabusinessprocess,themoldcavitylengthis1500mm,therequiredsizeerrorof±0.05mm,surfaceroughnessRa0.8μm,manufacturingprocesstheoriginal:

roughplaning-semifinishplaning-finishing-Manualscraping-manualpolishing,manufacturingcycleis60hours.Usinghighspeedmilling,aftersemi-finishmachiningandfinishmachining,theprocessingcycleisonly6hours,notonlyimproveefficiency,butalsogreatlyimprovethequalityofmold.

4,researchonKeyTechnologiesofhigh-speedCNCmachining

NCHigh-speedmachiningisacomplexsystemsengineering,involvescuttingmechanism,cuttingmachine,cutter,cuttingprocessmonitoringandprocessingtechnologyandotherrelatedhardwareandsoftwaretechnology,implementationanddevelopmentofnumericalcontrolhighspeedcuttingtechnology,relyonthissystemofvariouselements,thekeytechnologytorealizehigh-speedCNCcuttingtechnologycannotdowithout,specificallyinthefollowingaspects:

1）themechanismofhighspeedcutting:

thevariousmaterialsinhighspeedmachiningconditions,thechipformationmechanism,variationofcuttingforce,cuttingheat,toolwearpatternsandeffectsonthesurfacequality,thebasictheoryaboveexperimentsandresearch,willbeconducivetopromotingthehigh-speedcuttingprocessfordeterminingandcuttingtheamountofchoice,andprovideatheoreticalbasisfortheprocessingofspecificpartsandmaterialformulation,whichbelongstothetechnicalprinciple.Atpresent,todeterminetheprocessspecificationofhighspeedcuttingandcuttingferrousmetalsanddifficulttomachinematerials,isoneofthedifficultiesintheproductionofhigh-speedcutting,andisalsothefocusofresearchinthefieldofhighspeedmachining.

2）technologyofhighspeedcuttingmachinetoolmodule:

high-speedcuttingmachineneedshigh-speedspindlesystem,feedingsystemandhigh-speedCNCcontrolsystem.Abletowork