资源描述：
《现代数控机床原理与结构 双语 教学课件 作者 郁元正 Chapter4 CNC lathe.ppt》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。
1、Chapter4NClathe4.1Introduction4.2TransmissionofNClathe4.3Turningcenter4.4Automatictoolchanger4.1Introduction4.1.1Capabilities(page157)Turningrevolutionsurfacesofshafts,bushes,plates,e.g.inneroroutercylindricalsurfaces,conicalsurfaces,threads,otherhighaccuracycontour
2、s,etc.Equippedwithturningtools,drills,reamers,boringtoolsMachiningaccuracyreachesIT5～IT6RoughnessRa<1.6μm.EconomyNClathe(1)EconomyNClatheModificationbasedonconventionallatheOpenloopservocontrolbysingleboardmicrocomputerSimpleconstructionandeconomyLackofautomatictool
3、tipradiuscompensationandconstantlinearvelocityfunctions.4.1.2Capabilitiesandtypes(page157)Full-functionalNClathe(2)Full-functionNClathe.Knownas‘NClathe’orstandardNClathe;Equippedwithstandardcontrolsystemwithhighresolution（高分辨率）CRT,graphicssimulation,toolcompensation
4、functionandcommunicationornetworkports;Closedorsemi-closedloopservocontrol;Multi-axiscontrollability;Highrigidity,highaccuracyandhighefficiency.(3)TurningcenterGenerallysimilartofull-functionalNClathe;Equippedwithtoolmagazine,ATC,indexingdevice,millingpowerunitandro
5、botarms;Differentmachiningprocesssuchasturning,milling,drilling,reamingscrewtapping,etc.canbeperformedwithoneclamping;CostlyRobotcontrolcabinetFMClathe(4)FMClatheActuallyaflexiblemanufacturingcellconsistsofNClathe,robot,etc.Capabletoperformautomatictransfer,clamping
6、forworkpieceandautomaticmachiningpreparations.4.1.3StructureandfeaturesofNClathe1.StructureofNClathe(1)HeadstockLocatesontheleftofbed;Supportsspindleandaccommodatestransmissions(2)TurrettoolpostLocatesonslidetoholdtoolsfordifferentmachiningpurpose;Toolscanbeautomat
7、icallyselectedasrequired(3)SlidesLongitudinalslide(Z-direction,locatesonways)Crossslide(X-direction,locatesonlongitudinalslide)SlidesmotionrealizefeedinginZ-andX-direction.(4)TailstockLocatesonwaysandcanperformlongitudinaladjusting;Thecenterontailstockisanassistants
8、upportforworkpieceduringmachining;Cancarrytoolse.g.drill,reamerformachiningbushcenter(5)BedLocatesonbase;Carriesmaincomponentsofthelathean
