数控技术(双语).ppt

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1、数控技术（双语）NumericalControlTechnology董长双2013.7机械工程学院1Chapter1Introductiontonumericalcontrol1.1FundamentalsofNCtechnology1.1.1DevelopmenthistoryofNCLate1940s，JohnparsonsandFrankstulenputupNCideas.parsonscorporation（Traversecity,Michigan)theideaofusingcoordinateposition

2、datacontainedonpunchedcardstodefineandmachinethesurfacecontoursofairfoilshapesprecision:±0.0015inch(±0.038mm)April1951,ContractwassignedbyMITandAirForce.March1952,ThefirstNCmachinewasdevelopedbyMIT.CincinnatiMillingMachineCo.verticalHydro-Telmillingmachine.Controll

3、erconsisted292vacuumtubes.2Chapter1Introductiontonumericalcontrol3Chapter1Introductiontonumericalcontrol1954IndustryNCmachinewasdevelopedbyBendixCo.MachinecenterwasdevelopedbyKeaneyandTrecherCo.Machinecenter:MultifunctionNCmachinewithautomatictoolchangerandtoolstor

4、age.1967FMSwasdevelopedbyMollinCo.Mollin24system,(24hr/day,16hrhumanworkerunattended)7machinetoolswascontrolledbyIBM1360/140computer.4Chapter1Introductiontonumericalcontrol1.1.2ConceptofNCandCNCGB8129-87定义：数字控制（NC）是用数字化信号对机床运动及其加工过程进行控制的一种方法，简称数控。数控机床（NCmachine)是采用

5、了数控技术的机床或者说是装备了数控系统的机床。NChardwiredNCCNCComputernumericalcontrol5Chapter1Introductiontonumericalcontrol6Chapter1Introductiontonumericalcontrol7Chapter1Introductiontonumericalcontrol8Chapter1Introductiontonumericalcontrol9Chapter1Introductiontonumericalcontrol10Chapt

6、er1Introductiontonumericalcontrol11Chapter1Introductiontonumericalcontrol12Chapter1Introductiontonumericalcontrol13Chapter1Introductiontonumericalcontrol14Chapter1Introductiontonumericalcontrol15Chapter1Introductiontonumericalcontrol16Chapter1Introductiontonumerica

7、lcontrol17Chapter1Introductiontonumericalcontrol1.1.3BasiccomponentofNCmachinetoolsTheworkprocessofNCBasiccomponentsofaCNCmachinetool18Chapter1Introductiontonumericalcontrol19Chapter1Introductiontonumericalcontrol1.2ClassificationofNCmachines1.2.1TypesofNCmotioncon

8、trolsystem1.Point-to-pointcontrolsystem(Positioningcontrolsystem)2.Contouringcontrolsystem(Continuouspathcontrolsystem)20Chapter1Introductiontonu