数控技术应用专业英语第五版高职PPT完整全套教学课件

数控技术应用专业英语第五版

全套PPT课件Module1CNCLatheMachining

Task1BasicKnowledgeofCNCLathe

SpeakingActivityA:Excuseme，mayIaskyouaquestion,Mr.Li？B:Ofcourse.A:I'veoftenconfusedaboutthekindsofCNClathe,canyouexplainthemtome?B:OK,letmetellyou.CNClathesareclassifiedashorizontalandverticalCNClathes.HorizontalCNClathesareforalongeraxialdimensionorasmalldisc-typeworkpieceturning.VerticalCNClathesareusedtoturnlargediameterdisc-typeworkpieces.SpeakingActivityA:DoyouknowaboutthemechanicalcomponentsofCNClathe？B:Iknowsomeofthem.Theyarebed,headstock,threejawchuck,turret,tailstock,operationpanel,protectiveshieldandguidewayetc.A:What’sthis?B:It’sathree-jawchuckandaworkpiececanbemountedonit.SpeakingActivityA:What’sthat?B:It’sabed.Theseareallthemainstructureofthelathe.A:Oh,Isee.Thanks.B:Itismypleasure.PartATechnicalReading

1PartBPracticeactivity2PartC

Broadenyourhorizon3Task1BasicKnowledgeofCNCLatheTask1BasicKnowledgeofCNCLathe1.GeneralintroductionaboutaCNCLathe

2.ComponentsofaCNCLathePartATechnicalReading

11.GeneralintroductionaboutaCNCLatheCNClatheiscomputernumericalcontrollathe.Itisprimarilyusedtorotatebodyworkpieceswithturning，boring，drilling，reaming，tappingandothermachiningprocesses.数控车床是计算机数字控制车床，主要用来对旋转体零件进行车削、镗削、钻削、铰削、攻丝等工序的加工。Firstly，theinformationformachiningworkpiecerequiredtoprocessisrecordedbytheprogramthatisstoredinsomemediawhenCNClatheswork，andthentheprogramisinputtothenumericalcontroldevice.数控车床工作时，首先要把加工零件需要的工艺信息以程序的形式记录下来，存储在某些载体上，然后输入到数控装置中。1.GeneralintroductionaboutaCNCLatheProcessedbytheCNCdevice，commandandcontrolsignalsareissuedtoservosystemthatdrivemachine，coordinatemachinemovementandmakeitproduceaseriesofmachinemovementsuchasthemainmotionandfeedmotion，socompleteworkpiecesmachining.由数控装置处理程序，发出控制信号以指挥伺服系统驱动机床、协调机床动作，使其产生主运动和进给运动等一系列机床运动，完成零件的加工。Whenchangingtheshapeoftheworkpiece,wejusttomodifytheCNCprogramtocontinuethemachining.改变加工零件时，数控机床只要改变加工程序，就可以继续加工。1.GeneralintroductionaboutaCNCLatheCNClathesareclassifiedashorizontalandverticalCNClathe.数控车床分为卧式数控车床和立式数控车床。HorizontalCNClathesareforalongeraxialdimensionorasmalldisktypeworkpiecesturning.卧式数控车床用于轴向尺寸较长或小型盘类零件的车削加工。

VerticalCNClathesareusedtoturnlargediameterdisctypeworkpieces.

立式数控车床用于回转直径较大的盘类零件的车削加工2.ComponentsofaCNCLathe

ThemechanicalcomponentsofCNClathearebed,headstock,threejawchuck,turret,tailstock,operatorpanel,protectiveshieldandguidewayetc.数控车床机械部分由床身、主轴箱、三爪卡盘、刀架、尾座、操作面板、防护罩和导轨等组成。2.ComponentsofaCNCLathe

Constructioncastingmoldedwithresinsandofbed，headstockandsaddleplinthetc.床身、主轴箱、床鞍等基础件均采用树脂砂型铸造。Feedingsystemusesservomotors，precisionballscrewsandhighrigidityprecision.compoundbearingsthatensureaccuratepositioningandefficientdriving.进给系统采用伺服电动机、精密滚珠丝杠、高刚性精密复合轴承结构，以保证定位准确、传动效率高。2.ComponentsofaCNCLathe

Highspindlespeedwithwidevariablespeedranges，lownoise.主轴转速高，调速范围宽，整机噪音低。Flexiblecontrolpanelenablesconvenienttoolsetting.柔性控制面板便于操作者对刀。Vertical4-positionturret，horizontal6-positionturretandquickchangetoolpostetc.areavailableforyourselection.刀架有立式四工位、卧式六工位、快换刀架等多种形式供选择。FANUC，SIEMENS，FAGORetc.controlsystemscanbeappointed.控制系统有FANUC、西门子、FAGOR等品牌供选择。

PartBPracticeactivity2

PartBPracticeactivity2

PartBPracticeactivity2

PartBPracticeactivity

ProfessionalsituationsimulationKeyWords:headstock;threejawchuck;turret;tailstock;operationpanel;guideway.

PartC

Broadenyourhorizon

数控技术应用专业英语第五版

Module1CNCLatheMachining

Task2CNCProgramforLatheSpeakingActivityA:Hi，Howareyoudoing?B:Notsogood.A:What'swrongwithyou？CanIhelpyou?B:Yes,Idon’tknowthedifferencebetweenthemachinecoordinatesystemandworkpiececoordinatesystem.B:MachinecoordinatesystemistheinherentcoordinatesystemofCNCmachineandhasafixedcoordinateorigin.Whiletheworkpiececoordinatesystemisthecoordinatesystemusedinprogramming,alsoknownastheprogrammingcoordinatesystem.SpeakingActivityA:Whosetsthemachinezeropointforeachmachine？B:Themanufacturer.A:Iamnotveryclearabouttheprogramzero.Canyouexplainittome?B:Ofcourse.Theoriginpointforeachaxisiscommonlycalledtheprogramzero.Theplacementofprogramzeroisdeterminedbytheprogrammer.A:Canitbeplacedanywhere?B:Yes.Thewiseselectionofaprogramzeropointwillmakeprogrammingmucheasier.Theprogramzeroofalatheisgenerallysetinthemidpointoftheworkpiece'srightsurface.A:Thanks.B:Itismypleasure.PartATechnicalReading

1PartBPracticeactivity2PartC

Broadenyourhorizon3Task2CNCProgramforLathe

Task2CNCProgramforLathe1.PreparingforCNClatheprogram2.ProgramCodes3.ApplicationofCNCProgram

PartATechnicalReading

1（1）Coordinatesystems坐标系Machinecoordinatesystem机床坐标系Thereferencepointofthemachineisdefinedasthemachinezeropoint.Themachinemanufacturersetsamachinezeropointforeachmachine.Themachinezeropointistheoriginofthemachinecoordinatesystem.

机床参考点被定义为机床零点。机床制造商为每一台机床设置一个机床零点。机床零点是机床坐标系的原点。1.PreparingforCNClatheprogramWorkpiececoordinatesystem工件坐标系Whentheoperatorwantstodeterminethepositionoftheworkpieceonthemachine，hemustsettheworkpiececoordinatesystems.Severalworkpiececoordinatesystemscanbesetforoneworkpiece.操作者想要确定零件在机床上的位置时，必须建立工件坐标系。一个工件可以设置几个工件坐标系。1.PreparingforCNClatheprogramLocalcoordinatesystem局部坐标系Ifthedimensionofaworkpieceistoobig，theusercansetanothercoordinatesysteminalocalareaoftheworkpiece，thisisalocalcoordinatesystem.当工件尺寸太大时，用户可以在工件上的某一局部区域设定另一个坐标系，这个坐标系就是局部坐标系。

1.PreparingforCNClatheprogram（2）Programzero程序零点Theoriginpointforeachaxisiscommonlycalledtheprogramzeropoint，alsocalledworkpiecezero，workpieceoriginorzeropoint.每个坐标轴的原点通常称为程序零点，也称为工件零点、工件原点或零点。Oneofthemainbenefitsofusingtherectangularcoordinatesystemisthatmanyofthecoordinatesusedwithintheprogramcanbetakenrightfromtheprint.使用直角坐标系编程的主要好处是:程序中要用到的许多坐标都可以直接从图纸中得到。1.PreparingforCNClatheprogramTheplacementofprogramzeroisdeterminedbytheprogrammer.Programzerocouldbeplacedanywhere.程序零点的位置由编程者确定，程序零点可以设定在任何位置。Thewiseselectionofaprogramzeropointwillmakeprogrammingmucheasier.合理选择程序零点会使编程更加简便。Youshouldalwaysmakeyourprogramzeropointalocationonthedatumsurfacesofyourworkpiece.程序零点应选择在零件的尺寸基准上。Thereisaprogramzeropointforeachaxis.每一个坐标轴都有一个程序零点。1.PreparingforCNClatheprogramTheprogramzeroofalatheisgenerallysetinthemidpointoftheworkpiece'srightsurface.

车床程序零点一般设在工件右端面中点。1.PreparingforCNClatheprogram（3）Absoluteandincremental绝对与增量Whenyouarespecifyingcoordinatesfromtheprogramzeropoint，itiscalledtheabsolutemodeofprogramming.以程序零点确定坐标值称为绝对模式编程。Formachiningcenter（lathe）programming，theabsolutemodeisspecifiedbyaG90（X、Z）wordintheprogram.加工中心（数控车床）用G90（X、Z）表示绝对模式编程。1.PreparingforCNClatheprogramIntheincrementalsystem，everymeasurementreferstothepreviouslydimensionedposition.在增量系统中，每个运动都是相对于前一个位置的。Iftheprogrammermakesamistakeinincrementalprogram，everyincrementalmovementfromthatpointwillbeincorrect.如果编程者在增量编程中把某点坐标值弄错，那么从那点后的每一个增量运动都是不正确的。Iftheprogrammermakesthesamemistakeinanabsoluteprogram，onlyonemovementwillbeincorrect.Anymotioncanbecommandedineithertheabsoluteortheincrementalmode.如果编程者在绝对编程中出现同样的错误，则只有一个运动是不正确的。任何运动都可以用绝对或增量来表示。1.PreparingforCNClatheprogram（4）Programconfiguration程序结构Generallyspeaking，therearetwotypesofprograms:themainprogramandthesubprogram.一般来说，程序类型有两种:主程序和子程序。Eitherthemainprogramorasubprogramcontainsthreeparts:theprogramnumber，theprogramcontentandtheprogramend.不论是主程序还是子程序，都由三部分组成:程序号、程序内容、程序结束。

1.PreparingforCNClatheprogram1.PreparingforCNClatheprogramTheprogramnumberusuallystartswith“O”（or“%”）.Thenumberafter“O”（or“%”）istheprogramnumber.Programnumbersrangefrom01to9999.程序号通常以“O”（或“%”）开始。O（或“%”）后面的数字是程序号。程序号的范围从01至9999。Thecontentoftheprogramisthecoreofthewholeprogram.Itismadeupofmanyblocks程序内容是整个程序的核心，由许多程序段组成。TheM02orM30commandisusedtostopthewholeprogram.M02或M30指令用于整个程序的结束1.PreparingforCNClatheprogram

（5）TheF，S，MandTcodes1.PreparingforCNClatheprogramTheFcodecontrolsthespeedofthecuttingfeed.Itcanbeexpressedasfeedperminuteorfeedperrevolution.F代码控制切削进给速度。可以用每分钟进给量或每转进给量来表示。AFspecificationisamodalandremainsineffectinaprogramforallsubsequenttoolmovements.F代码是模态的，在随后的刀具运动程序段中一直有效。Feedspeedcanbechangedfrequentlyinaprogram，asneeded.一个程序中可以根据需要改变进给速度。F、S、M和T代码

1.PreparingforCNClatheprogramTheScodecontrolsthespindlespeed.TheselectedspeedvaluerightfollowstheSaddress.S代码控制主轴转速。S地址后面是所选择的转速值。TheScommandshouldbegiventogetherwiththespindlerevolutioncommand（M03orM04）.S指令通常和主轴旋转指令（M03或M04）一起使用。Forexample，M03S1600directsthecontroltosettheCNCmachinespindle1600r/min.例如，“M03S1600;”表示机床主轴转速为每分钟1600转。

1.PreparingforCNClatheprogramTheMcodesarecalledthemiscellaneouswordsandareusedtocontrolmiscellaneousfunctionofthemachine.M代码叫做辅助功能字，控制机床的辅助功能。Suchfunctionsincludeturnthespindleon/off，start/stopthemachine，turnon/offthecoolant，changethetoolandreturntothestartoftheprogram.包括主轴的转动/停止、机床的启动/停止、冷却液的开/关、换刀和返回程序头等功能。

1.PreparingforCNClatheprogramTheTcodeisusedtospecifythetoolnumber.T代码用来指定刀具号OneTcodecanbecommandedinablock.一个程序段只能有一个T代码。

1.PreparingforCNClatheprogram（6）GcodeG代码Gcodesareusuallyclassifiedintotwotypes.ThemodalGcodesspecificationwillremainineffectforallsubsequentblocksunlessreplacedbyanotherGcodeofsamegroup.Thenon-modalGcodesspecificationwillonlyaffecttheblockthatitappears.

G代码通常放在程序段的开始。G代码通常分为两类。模态G代码功能在随后的程序段一直有效，直至被同组的另一个代码代替。非模态G代码功能仅在所出现的程序段内起作用。2.ProgramCodes

（1）Basicprogramcodes基本编程代码

·G00（rapidtraverse/positioning）G00（快速定位）

TheG00commandmovesatooltothepositionintheworkpiecesystemspecifiedwithanabsoluteoranincrementalcommandatarapidtraverserate.G00指令是在工件坐标系中以快速移动速度移动刀具到达由绝对或增量指令指定的位置。Theformatofcommandis“G00X（U）（W）;”.快速定位指令格式为:G00X（U）

Z（W）

;2.ProgramCodes

G01（linearinterpolation）G01（直线插补）

TheG01commandmovesatoolalongalinetothespecifiedpositionatthefeedratespecifiedinFcode.G01指令是将刀具以F代码指定的进给速度沿直线移动到指定的位置。Theformatofcommandis“G01X（U）Z（W）F;”.Fisexpressedasspeedoftoolfeed（feedrate）.G01指令格式为:G01X（U）

Z（W）

F

;。2.ProgramCodes

G02/G03（circularinterpolation）G02/G03（圆弧插补）Thecommandwillmoveatoolalongacirculararc.该指令使刀具沿圆弧运动。Theformatofcommandis“G02（G03）X（U）Z（W）R（orIK）F;”.指令的格式为:G02（G03）X（U）

Z（W）

R

（或I

K

）F

;。2.ProgramCodes

TheendpointofanarcisspecifiedbyX（U）andZ（W）.Fortheincrementalvalue，thedistanceoftheendpointthatisviewedfromthestartpointofthearcisspecified.用X（U）和Z（W）指定圆弧终点。对于增量值，是指令从圆弧终点相对于圆弧起点的距离。ThearccenterisspecifiedbyaddressesIandKfortheXandZaxes，respectively.ThenumericalvaluefollowingIandK，however，isavectorcomponentinwhichthearccenterisseenfromthestartpoint.圆弧圆心用地址I和K（分别对应于X和Z轴的坐标）指定。但是，I和K后面跟的数值是从圆弧起点向圆心看的矢量分量。2.ProgramCodes

G04（dwell）G04（暂停）

Theexecutionofthenextblockisdelayedbythespecifiedtime.按指定的时间延迟执行下个程序段。Theformatofcommandis“G04X_;orG04U_;orG04P_;”.指令格式为:G04X_;或G04U_;或G04P_;。2.ProgramCodes

（2）ToolcompensationcodesMostcontrolsusethreeGcodeswithtoolnoseradiuscompensation.大多数的数控系统使用三个G代码表示刀尖半径补偿。G41isusedtoinstateatoolnoseradiuscompensationleft.G42isusedtoinstateatoolnoseradiuscompensationright.G40isusedtocanceltoolnoseradiuscompensation.G41用来设置刀尖半径左补偿，G42用来设置刀尖半径右补偿，G40用来取消刀尖半径补偿。2.ProgramCodes

（3）Cyclecodes循环代码G71（stockremovalinturning）Thiscannedcyclewillroughoutmaterialonapartgiventhefinishedpartshape.此循环指令能按照给定的精加工后的零件形状粗车去除多余材料。AllthataprogrammerneedstodoistodefinetheshapeofapartbyprogrammingthefinishedtoolpathandthensubmittingthepathdefinitiontoG71bymeansofaPQblockdesignation.编程人员需要做的是通过编制精加工刀具轨迹来定义零件形状，并且通过PQ程序段把指定刀具轨迹赋予G71指令。2.ProgramCodes

G73（patternrepeatinginturning）G73（重复模式车削循环）Bythiscuttingcycle，itispossibletoefficientlycutworkwhoseroughshapehasal-readybeenmadebyaroughmachining，forgingorcastingmethodetc.通过这种切削循环，可以高效地切削已粗车成型、铸造成型或锻造成型的工件。

G70（finishingcycleinturning）G70（精车循环）

3.ApplicationofCNCProgram

3.ApplicationofCNCProgram

3.ApplicationofCNCProgram

PartBPracticeactivity2

PartBPracticeactivity2

PartBPracticeactivity2

PartBPracticeactivity2

ProfessionalsituationsimulationKeyWords:coordinatesystem;programcode;programzero;roughmachining.

PartC

Broadenyourhorizon

数控技术应用专业英语第五版

Module1CNCLatheMachining

Task3CNCLatheOperationSpeakingActivityA:Goodafternoon,Mr.Li.B:GoodafternoonMissWang.Couldyouhelpme?A:WhatcanIdoforyou?B:Canyoutellmehowtoinputanewprogram?A:First,switchtheknobto“EDIT”modeonthepanelandpresstheprogramkey.Theninputtheprogramnumberwiththeaddress/numberkey.Whentheinsertkeyispressed,theprogramnumberappearsonthescreen.Finally,youcaninputtheprogramcontent.B:Whichkeycanbeusedtochangethefeedrate?SpeakingActivityA:Youcanrotatethefeedrateknobtoadjustthefeedrate.Youcanselectthefeedrateyouneed.Thefeedrateincreasesifyourotatethefeedrateknobclockwise.Thefeedratedecreasesifyourotatetheknobcounterclockwise.B:Howtochecktheprogram?A:Pressthesingleblockmodekeyduringautomaticoperation.Youcanchecktheprograminthesingleblockmodebyexecutingtheprogramblockbyblock.B:Thankyouverymuch.Bye-bye!A:Bye!PartATechnicalReading

1PartBPracticeactivity2PartC

Broadenyourhorizon3Task3CNCLatheOperationTask3CNCLatheOperation1.CNCLathe'sPanel2.CNCLatheoperationPartATechnicalReading

11.CNCLathe'sPanel（1）ControlpanelTheFANUCcontrolisoneofthemostcommontypesofCNCcontrolsinthefactorytoday.FANUC控制系统是当前工厂最常用的数控系统类型。1.CNCLathe'sPanelprogramkey:Displaytheprogramblocksoftheselectedpartprogramonthescreen程序键:在屏幕上显示所选择零件的程序

positionkey:Displaydifferentpagesthatlistmachineaxispositionsonthescreen位置键:在屏幕上显示机床坐标轴位置的不同界面menu/offsetkey:Showoffsets，youcaninputworkpieceoffsetvaluesandcuttercompensationvalue偏置键:显示偏移量，可以输入工件偏置值和刀具补偿值

1.CNCLathe'sPanelmessagekey:Showactivealarmmessages信息键:显示激活的报警信息graphicskey:Pressthekeyfirstshowssettings，pressthekeytwiceallowyoutorunapartprogramonscreen图形显示键:按一次显示设置，再按此键将在屏幕上运行零件的程序1.CNCLathe'sPanelalterkey:Thewordwillbechangedbythenewword替换键:旧字被新字代替

deletekey:Thewordwillbedeleted删除键:字被删除

insertkey:Insertthecharacters，lettersandnumbers

插入键:插入字符、字母和数字cancelkey:Cancelthelastcharacterorsymbolinputtothebuffer取消键:删除输入缓存器的最后一个字符或符号1.CNCLathe'sPanelendofblockkey:Attheendofeachblock，pressthekeythen“;”willappear程序段结束键:在程序段末尾按此键出现“;”

shiftkey:Switchthecharacters切换键:切换字符

pagechangekeys:Pagingforwardorbackward翻页键:向前或向后翻页

1.CNCLathe'sPanelcursor（arrow）keys:Movingthecursorleft（right，forward，backward）光标（箭头）键:前、后、左、右移动光标

inputkey:Inputworkpieceoffsetvalues，cuttercompensationvalueandsoononthescreen

输入键:输入工件偏置值和刀具补偿值等resetkey:ResettheCNCsystemorcancelanalarm

复位键:数控系统复位或取消报警1.CNCLathe'sPanel（2）Themachineoperationpanel操作面板

1.CNCLathe'sPanelEDIT:Editmode编辑模式AUTO:自动模式MDI:手动输入数据模式HX:HX:手轮模式1.CNCLathe'sPanelfeedrateknob进给速度旋钮RAPID:RapidfeedrateoverrideRAPID:进给倍率修调HANDLE手轮倍率修调（X1、X10、X100）spindlerateknob主轴速度旋钮ON:PoweronOFF:PoweroffON:接通电源OFF:关闭电源1.CNCLathe'sPanelFOR:SpindleCWkeyFOR:主轴正转键STOP:SpindlestopkeySTOP:主轴停止键REV:SpindleCCWkeyREV:主轴反转键handle:手轮cursorkeys:光标键:用光标键移动坐标轴1.CNCLathe'sPanelSTART:CyclestartkeySTART:循环启动键程序自动运行HOLD:FeedholdHOLD:进给保持emergencystopbutton:紧急停止按钮MLK:machinelockkey机床锁住DRN:dryrunkey空运行键:1.CNCLathe'sPanelsingleblockmodekey单段模式键coolantkey:Openorcutoffthecuttingfluids冷却液键:打开或关闭冷却液2.CNCLatheOperation

（1）ManualoperationManualreferencepointreturn

（a）Ensurethemodeselectionswitchinthe“ZRN”position.（a）确保模式选择开关处于“ZRN”位置。（b）Usethesecursorkeystomovethecoordinateaxis.（b）使用光标键移动坐标轴。

2.CNCLatheOperation

ManualcontinuousfeedRotatethefeedrateknobtoadjustthefeedrate.Youcanselectthefeedrateyouneed.旋转进给速度旋钮调节进给速度，可以根据需要选择进给速度Therateincreasesifyourotatethefeedrateknobclockwise.顺时针旋转该旋钮，进给速度增加;Theratedecreasesifyourotatetheknobcounterclockwise.逆时针旋转该旋钮，进给速度减小。HandlefeedThecoordinateaxescanbemovedbyrotatingthehand-wheel.通过旋转手轮能移动坐标轴。

2.CNCLatheOperation

（2）InputtingaprogramEnsurethemodeselectionswitchinthe“EDIT”mode.Programsareorganizedinthecontrolbyprogramnumber.Youwillbeallowedtoretrievethedesiredprogramfromthecontrol'smemory，makingittheactiveprogram.确保模式选择开关处于“EDIT”模式。通过程序号调用程序，可以从内存中调用需要的程序，使程序激活。

2.CNCLatheOperation

Theproceduretoinputaprogramisshownbelow:输入程序的步骤如下:·Switchtheknobto“EDIT”modeonthepanel，thesystemwillbeintheeditmode.·将面板上的旋钮转换至“EDIT”模式，系统处于编辑模式。·Presstheprogramkeytodisplaytheprogramscreen.

·按下程序键显示程序屏幕。·Inputtheprogramnumberwiththeaddress/numberkey.

·使用地址/数字键输入程序号。2.CNCLatheOperation

·Whentheinsertkeyispressed，theprogramnumberappearsonthescreen.·按下插入键，程序号就会出现在屏幕上。·Afterthat，youcaninputtheprogramcontent.Attheendofeachline，pressthekey，and“;”willappearonthescreenthenpresstheinsertkey.

·然后可以输入程序内容。在一行程序的结尾先按键，屏幕上将出现“;”，然后再按插入键。2.CNCLatheOperation

（3）Settingoffsetdata设定偏置数据值Settingthetoolwearvalue设定刀具磨耗值Settingthetoolgeometryvalue设定刀具几何形状值2.CNCLatheOperation

（4）MDIoperationMDIisusedtoenterandexecuteCNCcommands.TheproceduretouseMDIisshownbelow:MDI用于立即输入和执行CNC命令。应用MDI的步骤如下:·Ensurethemodeselectionswitchinthe“MDI”mode，thesystemwillgetintotheMDImode.确保模式选择开关处于“MDI”模式，系统进入手工数据输入模式。PresstheprogramkeyandtheMDIinterfaceappearsonthescreen.按下程序键，MDI界面出现在屏幕上。2.CNCLatheOperation

·Inputoneormoreprogramblocks.·输入一个或多个程序段。·Setthecursoratthebeginningoftheprogram'sfirstblocktoexecutetheprogram.·为了执行程序，将光标置于第一个程序段的开始。·Pressthecyclestartkeyandthepreparedprogramwillstart.·按下循环启动键，准备好的程序开始执行。2.CNCLatheOperation

（5）Automaticoperation·Switchtheknobtothe“AUTO”modeandtheCNCsystemwillbeintheautomaticoperationmode.·将旋钮转换至“AUTO”模式，数控系统进入自动运行模式。·Pressthecyclestartkey，whentheindicatorlightsup，theprogramistobeexecuted.

·按循环启动键，指示灯亮，该程序被执行2.CNCLatheOperation

Ifyouwanttopausetheprogrammidway，youcanpressthecycleholdkeyandthenthemachinepauses.Ifyoupressthecyclestartkey，theprogramwillcontinuebeingexecutedfromthecurrentblockoftheprogram.如果要中途使程序停止，可以按下进给保持键，这时机床停止运行。再按循环启动键，从当前程序段继续执行。Presstheresetkey，theprogramwillstop.Pressthecyclestartkey，theprogramwillbeexecutedfromthebeginning.按下复位键可以中断程序，再按下循环启动键，程序将从头开始执行。2.CNCLatheOperation

·Pressthedryrunkeyduringautomaticoperation.Thetoolmovesattherapidfeedratespecifiedinaparameter.·在自动运行过程中按下空运行模式键，刀具以系统给定的参数快速移动。·Pressthesingleblockkeyduringautomaticoperation.Thetoolstopsafterasingleblockintheprogramisexecuted.Ifyoupressthecyclestartkey，theprogramwillcontinuebeingexecutedoneblockfromthecurrentblockoftheprogram.Checktheprograminthesingleblockmodebyexecutingtheprogramblockbyblock.

·在自动运行过程中按下单段模式键，程序执行一段后刀具停止。再按循环启动键，将从当前程序段继续执行下一个程序段。一段一段执行程序用于检查程序。

PartBPracticeactivity2

PartBPracticeactivity2

PartBPracticeactivity2

PartBPracticeactivity2

ProfessionalsituationsimulationKeyWords:manualoperation;inputtingaprogram;settingoffsetdata;MDIoperation;automaticoperation.

PartC

Broadenyourhorizon

PartC

Broadenyourhorizon

PartC

Broadenyourhorizon

PartC

Broadenyourhorizon

数控技术应用专业英语第五版

Module2CNCMachining

CenterMachiningTask1BasicKnowledgeofCNCMachining

CenterSpeakingActivityA:Goodmorning,MissWang.B:Goodmorning,Mr.Li.A:Ihaven’tseenyouforalongtime.Whereareyougoingtodo?B:Iamgoingtotheworkshop.A:Wouldyoumindaskingyousomequestions?B:Noproblem.Whatdoyouwanttoknow?SpeakingActivityA:WhatarethetypesofCNCmachiningcenter?B:CNCmachiningcentersareclassifiedasvertical,horizontalanduniversalmachiningcenters.A:Howcanthemachiningcentersperformsomanyoperations,suchasmilling,drillingorboring?B:Amachiningcenterhasmanydifferentcuttersthatarestoredinthetoolmagazineandthesecutterscanbechangedautomatically.SpeakingActivityA:Oh,Isee.ThenwhatarethecomponentsofCNCmachiningcenter?B:ThemaincomponentsofCNCmachiningcenterarebed,saddle,column,table,servosystem,spindle,toolchangerandtheMCU.A:WhatisMCU?B:MCUisacomputerusedtostoreandprocesstheCNCprogramsentered.A:Iamverygladtoknowthese.Thanks.B:Youarewelcome.PartATechnicalReading

1PartBPracticeactivity2PartC

Broadenyourhorizon3Task1BasicKnowledgeofCNC

MachiningCenter

Task1BasicKnowledgeofCNCMC1.TheGeneralIntroductionaboutaCNCMC

2.ComponentsofaCNCMCPartATechnicalReading

11.TheGeneralIntroductionaboutaCNCMCMachiningcentershavebeendefinedasmultifunctionCNCmachineswithautomatictoolchangingcapabilitiesandtoolmagazine.数控加工中心是具有自动换刀功能和刀库的多功能数控机床。Sincetheirintroductioninthelate1950s，theyhavebecomeoneofthemostcommonofallcuttingmachines.加工中心自20世纪50年代后期出现以来，已经成为最普遍的切削机床之一。Increasedproductivityandversatilityaremajoradvantagesofmachiningcenters.加工中心的主要优势是提高了生产率并扩大了加工范围。1.TheGeneralIntroductionaboutaCNCMC

Machiningcentersareclassifiedasvertical，horizontalanduniversalmachiningcenter.加工中心可以分为立式、卧式和万能加工中心三种。

1.TheGeneralIntroductionaboutaCNCMC

Forverticalmachiningcenter，thebestsuitabletypesofworkpieceareflatparts，eithermountedtothefixtureonthetableorholdinamachineviseorachuck.立式加工中心最适合加工平板类零件，加工时将工件通过夹具安装在工作台上，或将工件装夹在机用虎钳上或卡盘上。Theworkpiecethatrequiresmachiningontwoormorefacesinasinglesetuponahorizontalmachiningcenter.Agoodexampleispumphousingorboxyworkpieces.卧式加工中心适合加工在一次装夹中有两个或更多表面被加工的零件，比较好的例子是加工泵体或箱体类零件。1.TheGeneralIntroductionaboutaCNCMC

Universalmachiningcentersareequippedwithbothverticalandhorizontalspindles.万能加工中心同时装备有垂直和水平主轴。Asithasmultiplefunctionsandcanmachineallsurfacesofamorecomplexworkpiece.由于具有多种功能，故能够加工更加复杂零件的所有表面。1.TheGeneralIntroductionaboutaCNCMC

Machiningcenterinnovationsanddevelopmentshavebroughtaboutthefollowingimprovements:加工中心的技术革新和发展已经带来了下列改进:（1）Improvedflexibilityandreliability;（1）增强了柔性和可靠性;（2）Increasedfeed，speedandoverallmachineconstructionandrigidity;（2）提高了进给量、旋转速度和整个机床的结构与刚性;（3）Reducedmounting，toolchangingandothernon-cuttingtime;（3）减少了安装工件、换刀及其他非切削时间;（4）Improvedsafetyfeatures.（4）提高了安全性。2.ComponentsofaCNCMachiningCenter

ThemaincomponentsofCNCmachiningcenterarebed，saddle，column，table，servosystem，spindle，toolchangerandthemachinecontrolunit.数控加工中心的主要部件是床身、滑座、立柱、工作台、伺服系统、主轴、换刀装置和机床控制单元。

2.ComponentsofaCNCMachiningCenter

Thebedisusuallymadeofhigh-qualitycastironwhichprovidesforarigidmachinethecapabilityofperformingheavydutymachiningandmaintaininghighprecision.床身通常由优质铸铁制成，铸铁为刚性机床提供了执行重载加工任务和保持高精度加工的能力。床身用来支撑所有部件。Thebedsupportsallthecomponents.Thetable，whichismountedonthebed，providesthemachiningcenterwiththeX-axislinearmovement.工作台安装在床身上，为加工中心提供沿X轴的线性移动。2.ComponentsofaCNCMachiningCenter

Theservosystemprovidesfast，accuratemovementandpositioningoftheX，YorZaxis.伺服系统它能使X、Y或Z轴快速而准确地进行定位。Thetoolchangeriscapableofstoringanumberofpresettoolswhichcanbeautomaticallycalledbytheprogram.Thetoolchangetimeisusuallyonly3to5s.换刀装置能够存储一定数量的预置刀具，零件加工程序可以自动调用这些刀具。换刀时间通常只有3～5秒。2.ComponentsofaCNCMachiningCenter

Machinecontrolunit（MCU）isacomputerusedtostoreandprocesstheCNCprogramsentered.MCUvariesaccordingtomanufacturer'sspecif