刀具磨损的形成机制-加工工艺装备夹具毕业课程设计外文文献翻译、中英文翻译

1 英文文献1.1Performance of cemented carbide toolsAbstractTheperformanceofcementedcarbidecuttingtools directlyinfluencemachiningqualityofthemachinedworkpiece.Inthis paper,theformingmechanismofboundarynotchofcemented carbidecuttingtoolisstudied,relatedtheoriesanalyzed,a definition theboundarynotchsizepresented,andmainfactorsto influence boundarynotchoftoolpointedout.Besidesformingprocess and changelayoftheboundarynotchoftoolarefound out,and a certainnumberofmeasurestodecreaseandcontroltheboundarynotoftoolhavebeenadvanced.Keywordsboundarynotch;cementedcarbidecuttingtool;cutting burr;cornerradius;toolcuttingedgeangle.1INTRODUCTIONThewearandboundarynotchofcementedcarbidecuttingtoolsareoftenfoundinthemachining.Theydirectlyinfluencemachining qualityofthemachinedworkpieceandthecuttingperformanceandlifeofthecutter.Especially,intheprecisionmachining,flexiblemanufacturingsystem(FMS)andotherautomationmanufacture,wearandboundarynotchbehaviorsofcementedcarbidetoolsareevenmoreimportant.Metalcuttingexperienceshaveexpoundedthatwearandboundarynotchofthecementedcarbidecuttingtoolsaremoreseriousinthemachiningoftheworkpieceinwhichthestrainhardeningishighandtheremainingisnoteven.Itseriouslyinfluencesthemachiningqualityofthemachinedpieceandthecuttingperformance andlifeofthecutter.But,sofar,therehasnotbeenmuchresearchontheboundarynotchmechanismofcementedcarbidecuttincutter,andthetechnicalmeasurestoreduceboundarynotchofcementedcarbidecuttingtoolsarefewer.Sothat,thebasedonthe machiningexperimentsoffrictionweldedjoint,thisresearchfocusesontheformingprocessesandmainrulesoftheboundarynotch,andhasdevelopedseveralmeasurestoresistorlessenboundarnotch,whichprovidesatheoreticalandexperimentalbasetoensurecuttingperformancesofcuttersandmachiningquality.2THEFORMINGPROCESSANDMAINSIZEOFBOUNDARYNOTCHTheboundarynotchofcementedcarbidecuttingtoolsisweararea,whichisrelativelylarge,resultingfromfrictionbetween maincuttingedgeandthesurfaceoftheworkpieceasthefollowingFig.1.(a) showsatraditionalwearingtypeoftheflank.TherakefaceArandflankfaceAaarealsoshown.(b) showsthemaindimensionofboundarynotchofthelathe tool,inwhichVNrepresentedtheheightofboundarynotchandreferstothewidth.ItisapparentthatthegreaterthedimensionsofVNandCare,thegreateritdestroystheperformanceof toolsandinfluencesthemachiningquality3,4.Byexperiment,theformingprocessoftheboundarynotchcanbedividedintothefollowingthreesteps:firstly,severalmicrocracksareproducedatmaincuttingedge.Secondly,themeshfracturesarefoundintheboundaryareasandtheywill32,49114pread.Finally,thepiecematerialwillbedenudedandtheboundarynothisformed.Inthesubsequentcuttingprocess,thedimensionof(c) boundarybecomesbiggerandbigger.Showstheformingprocessofboundarynotchofthecementedcarbidecuttingtools.Mainfactorstoinfluencebouht notcharemechanicalperformanceofthepiecematerial,thecuttermaterial,andgeometryparameterofthecutter.Thefollowingexperimentswerecarriedoutinordertoexpoundtheformingmechan formingprocessofboundarynotchofthecementedcarbidecutting tools.3EXPERIMENTCONDITIONSANDTESTINGMEASURESThelatheC6130andreversiblecuttingtoolareusedinthe experiment.Fivecuttermaterialsareemployed.Mainmechanical parametersofcuttermaterialareshowninTable1.Themachiningpieceisthefriction-weldedlineofthesinglehydraulicpillar.Thewidthoftheweldedlineis15mmandthemachiningallowanceis5.5mm.Besides,theabovepillarisweldedwith270SiMnand45#steel.TherelativelymechanicalperformancesoftheweldedlineareshowninTable2.BasedonmanufacturingexperienceandrelativeinformationinChinaandothercountriesaboutsimilarmachiningprocess,thechosenmachiningandtoolgeometryparametersareshowninTable3.Theboundarynotchdimensionsofthecementedcarbidecutting tools(boundarynotchheightVNandwidthCaredirectlyattainedbytoolmicroscope.Inordertoensurereliabilityoftheresults, repeatedexperimentsarecarriedout.Therecurrentperformanceis good.4EXPERIMENTRESULTSANDANALYSIS4.1CutterMaterialsFordifferentcuttermaterials,asshowninFig.3,themachiningperformanceandtheabilitytoresistboundarynotcharedistinctly different.FromFig.3,wecanfindtheboundarynotchdimensionsare relativelylargewhenYD10,YD15andYWareused.Whereasthe boundarynotchdimensionissmallestwhenYTS25isused.Becauseoftheasymmetryallowancesimpactsandvibrationswilltakeplace.YTS25cutterhasbetterimpact-resistingperformanceandboundarynotch dimension.Therefore,YTS25cuttermaterialisselectedtodothe followingexperiments.Table1MaterialPerformancesofCutters TypeMaterialPerformanceRemarkboundarynotchareshownasinFig.4whenthecuttingedgeangleischanged.FromFig.4wecan findthat,withthelesseningofthecuttingedgeangleKr,the dimensionsoftheboundarynotchdecrease.Thereasonisthatwith thelesseningofthecuttingedgeangleKr,thelengthofthe cuttingedgethatactsoncuttingbecomeslargerandtheaverage loadsonthecuttingedgebecomelighter.InfluencesofCutterCornerRadius.1.2中文翻译硬质合金刀具的性能直接影响到工件的切削质量。在这篇文章里，研究了刀具磨损的形成机制，分析相关理论，提出了刀具磨损尺寸的定义，并且指出了刀具磨损的主要因素。除硬质合金刀具的形成过程和变动位置以外发现,并且一定数量的措施减少和控制硬质合金刀具被推进了。关键词:刀刃磨损；硬质合金刀具；切口毛刺；角落半径；工具切断边缘角1.介绍 硬质合金刀具的刀刃的磨损在加工中经常发现。它们直接地影响以机器制造的工件和切削质量和刀具的寿命。尤其,在精密机加工中,柔性制造系统(FMS)和硬质合金刀具的其他自动化制造系统中，擦损和刀刃磨损轨迹更重要。金属制的痕迹已经解释了擦损和硬质合金刀具的刀刃磨损在工件的机加工在高应变硬化中哪一个更严重和甚至没有剩余的情况。它严重地影响机器制造的工件质量和切断的性能和刀具的寿命。但是，迄今为止，在硬质合金刀具的刀刃磨损机构和专门技术措施上，都使硬质合金刀具的界线凹槽变得越来越小。因此,以磨擦熔接接合的机制实验为基础,这一个研究把重心集中在刀刃磨损的形成程序和干管尺,而且已经发展数个的措施抵抗或者减小界线凹槽,这提供一个理论上的经验性的碱确保刀具的切断性能和切削质量。2刀刃磨损形成原因和主要尺寸 硬质合金刀具的磨损是一个擦损面积,是相对地大的,由于主要的刃口和工作件的表面之间的磨擦，显示了传统侧面的磨损类型,Ar倾斜面Ar和侧面Aa面也显示。显示车刀的凹槽的主要尺寸,和的刀刃磨损，在车床中VN代表刀刃磨损的高度。C代表它的宽度，这样看起来，VN和C的尺寸越大，那么它破坏刀具工具的性能和影响机制质量的机会越大。 根据实验,刀刃磨损的形成方法被分成三步:第一，数个的微观裂解在主要的刃口被提出展现。第二,网眼破面在界线面积和他们被发现将会扩展。最后,块材料将会被使裸露，而且凹槽被形成。在后成的切削过程中，刀刃磨损的尺寸会变得越来越大。 影响刀刃磨损的主要因素是刀具的材料的机械性能，刀具材料和几何参数。下列的实验操作是为了解释边界尺寸的形成机原文请找腾讯3.249114理和刀具磨损的扩展尺寸。3实验条件和测试措施车床C6130和可逆刀具在实验被使用。五种刀具材料被使用。刀具材料的主要机械参数. 机制块是单一状网柱的磨擦焊接线。被焊接的线的宽度是15个毫米，而且切削裕度是5.5毫米。此外，上述的柱形物是用270SiMn和45#钢一起焊接。被焊接的线的相对机械性能在表2被显示。 在类似物机制方法中国和其他的国家中以制造业的经验和有关情报上,被选择的机制和工具几何参数显示。 硬质合金刀具的边界凹槽尺寸(界线凹槽高度VN和宽度C由工具得到。为了要确保结果的可靠度,反复的实验被实行。再利用的性能很好。4实验结果分析4.1刀具材料 对于不同的刀具材料,如图3所示,机制性能和刀刃磨损的抵抗能力是显然地不同的。我们能找刀刃磨损尺寸是相对地的大，当YD10,YD15和YW被使用的时候。然而当YTS25被使用的时候，刀刃磨损尺寸很最小。因为不对称现象公差挤入，而且振动将会YTS25刀具有得更好抗拒碰撞的性能和刀刃磨损尺寸。因此,YTS25刀具材料被选择做跟随实验。4.2刃口角的影响当刃口角被改变的时候，变化凹