《數(shù)控應用專業(yè)英語》課件第10章

10TOOLFUNCTION(TFUNCTION)

10.1TOOLSELECTIONFUNCTION10.2TOOLLIFEMANAGEMENTFUNCTION10.1TOOLSELECTIONFUNCTION

Byspecifyinganupto8digitnumericalvaluefollowingaddressT,toolscanbeselectedonthemachine.

OneTcodecanbecommandedinablock.Refertothemachinetoolbuilder’smanualforthenumberofdigitscommandablewithaddressTandthecorrespondencebetweentheTcodesandmachineoperations.

WhenamovecommandandaTcodearespecifiedinthesameblock,thecommandsareexecutedinoneofthefollowingtwoways:

(1)SimultaneousexecutionofthemovecommandandTfunctioncommands.

(2)ExecutingTfunctioncommandsuponcompletionofmovecommandexecution.

Theselectionofeither(1)or(2)dependsonthemachinetoolbuilder’sspecifications.Refertothemanualissuedbythemachinetoolbuilderfordetails.10.2TOOLLIFEMANAGEMENTFUNCTION

Toolsareclassifiedintovariousgroups,withthetoollife(timeorfrequencyofuse)foreachgroupbeingspecified.Thefunctionofaccumulatingthetoollifeofeachgroupinuseandselectingandusingthenexttoolpreviouslysequencedinthesamegroup,iscalledthetoollifemanagementfunction.Fig.10.2(a)Toollifemanagementdata(numberofntools)

Bychoosingatoolfromatoolgroupspecifiedbyamachiningprogram,thetoollifecanbemanaged.Fig.10.2(b)ToolSelectionbyMachiningProgram

Fortwopathcontrol,toollifemanagementisappliedindependentlyforeachpath.Toollifemanagementdataisalsosetforeachpath.10.2.1ToolLifeManagementData

Toollifemanagementdataconsistsoftoolgroupnumbers,toolnumbers,codesspecifyingtoolcompensationvalues,andtoollifevalue.Explanations·Toolgroupnumber

TheMax.numberofgroupsandthenumberoftoolspergroupthatcanberegisteredaresetbyparameter(GS1,GS2No.6800＃0,＃1)(Table10.1).WARNING

Whenbits0or1ofparameterGS1,GS2No.6800ischanged,reregistertoollifemanagementdatawiththeG10L3command(forregisteringanddeletingdataforallgroups).Otherwise,newdatapairscannotbeset.·Toolnumber

SpecifyafourdigitnumberafterT.·Codespecifyingtoolcompensationvalue

CodesspecifyingtooloffsetvaluesareclassifiedintoHcodes(fortoollengthoffset)andDcodes(cuttercompensation).Themaximumnumberofthetoolcompensationvaluespecificationcodewhichcanberegisteredis255whenthereare400toolcompensationvalues(eveniftheoptionfor512toollifemanagementsetsissupported).Themaximumnumberis32,64,99,200,499,or999whenthereare32,64,99,200,499,or999toolcompensationvalues.NOTE

Whencodesspecifyingtooloffsetvaluesarenotused,registrationcanbeomitted.10.2.2Register,ChangeandDeleteofToolLife

ManagementData

Inaprogram,toollifemanagementdatacanberegisteredintheCNCunit,andregisteredtoollifemanagementdatacanbechangedordeleted.Explanations

Adifferentprogramformatisusedforeachofthefivetypesofoperationsdescribedbelow.·Registerwithdeletingallgroups

Afterallregisteredtoollifemanagementdataisdeleted,programmedtoollifemanagementdataisregistered.·Additionandchangeoftoollifemanagementdata

Programmedtoollifemanagementdataforagroupcanbeaddedorchanged.·Deletionoftoollifemanagementdata

Programmedtoollifemanagementdataforagroupcanbedeleted.·Registeroftoollifecounttype

Counttypes(timeorfrequency)canberegisteredforindividualgroups.·Lifevalue

Whethertoollifeistobeindicatedbytime(minutes)orbyfrequency,itissetbyaparameterLTM(No.6800＃2).

Maximumvalueoftoollifeisasfollows.

Incaseofminute:4300(minutes)

Incaseoffrequency:9999(times)

CAUTION

WhentheQcommandisomitted,thevaluesetinbit7(LTM)ofparameterNo.6800isusedasthelifecounttype.10.2.3ToolLifeManagementCommandinaMachining

ProgramExplanations·Command

Thefollowingcommandisusedfortoollifemanagement:

T□□□□;Specifiesatoolgroupnumber.

Thetoollifemanagementfunctionselects,fromaspecifiedgroup,atoolwhoselifehasnotexpired,andoutputsitsTcode.In□□□□,specifyanumbercalculatedbyaddingthetoollifemanagementcancelnumberspecifiedinparameter6810toagroupnumber.Forexample,tosettoolgroup1whenthetoollifemanagementcancelnumberis100,specifyT101;.NOTE

When□□□□islessthanatoollifemanagementcancelnumber,theTcodeistreatedasanordinaryTcode.

M06;Terminateslifemanagementforthepreviouslyused

tools,andbeginscountingthelifeofthenewtoolsselectedwiththeTcode.Adifferentcodecanbeusedbysettingparameter6811.WARNING

WhenanoptionforspecifyingmultipleMcodesisselected,specifythiscodebyitselforasthefirstMcode.

H99;SelectstheHcodeoftoollifemanagementdata

forthetoolcurrentlybeingused.

H00;Cancelstoollengthoffset

D99;SelectstheDcodeoftoollifemanagementdataforthetoolcurrentlybeingused.

D00;CancelscuttercompensationWARNING

H99orD99mustbespecifiedaftertheM06command.

WhenacodeotherthanH99orD99isspecifiedaftertheM06command,theHcodeandDcodeoftoollifemanagementdataarenotselected.·Types

Fortoollifemanagement,thefourtoolchangetypesindicatedbelowareavailable.Thetypeusedvariesfromonemachinetoanother.Fordetails,refertotheappropriatemanualofeachmachinetoolbuilder.NOTE

Whenatoolgroupnumberisspecifiedandanewtoolisselected,thenewtoolselectionsignalisoutput.Examples·ToolchangetypeA

Supposethatthetoollifemanagementcancelnumberis100.

T101;Atoolwhoselifehasnotexpiredisselected

fromgroup1.

(Supposethattoolnumber010isselected.)

M06;

Toollifecountingisperformedforthetoolin

group1.

(Thelifeoftoolnumber010iscounted.)

T102;

Atoolwhoselifehasnotexpiredisselected

fromgroup2.

(Supposethattoolnumber100isselected.)

M06T101;Toollifecountingisperformedforthetoolin

group2.

(Thelifeoftoolnumber100iscounted.)Thenumberofthetoolcurrentlyused(ingroup1)isoutputwithaTcodesignal.(Toolnumber010isoutput.)·ToolchangetypeBandC

Supposethatthetoollifemanagementignorenumberis100.

T101;Atoolwhoselifehasnotexpiredisselected

fromgroup1.

(Supposethattoolnumber010isselected.)

M06T102;Toollifecountingisperformedforthetoolin

group1.

(Thelifeoftoolnumber010iscounted.)

Atoolwhoselifehasnotexpiredisselected

fromgroup2.

(Supposethattoolnumber100isselected.

M06T103;Toollifecountingisperformedforthetoolin

group2.

(Thelifeoftoolnumber100iscounted.)

Atoolwhoselifehasnotexpiredisselected

fromgroup3.

(Supposethattoolnumber200isselected.)·ToolchangetypeD

Supposethatthetoollifemanagementignorenumberis100.

T101M06;

Atoolwhoselifehasnotexpiredis

selectedfromgroup1.

(Supposethattoolnumber010isselected.)

Toollifecountingisperformedforthetool

ingroup1.

T102M06;

Atoolwhoselifehasnotexpiredisselectedfromgroup2.

(Supposethattoolnumber100isselected.)Toollifecountingisperformedforthetoolingroup2.(Thelifeoftoolnumber100iscounted.)10.2.4ToolLife

Thelifeofatoolisspecifiedbyausagefrequency(count)orusagetime(inminutes).Explanations·Usagecount

Theusagecountisincrementedby1foreachtoolusedinaprogram.

Inotherwords,theusagecountisincrementedby1onlywhenthefirsttoolgroupnumberandtoolchangecommandarespecifiedaftertheCNCunitenterstheautomaticoperationstatefromtheresetstate.CAUTION

Evenifthesametoolgroupnumberisspecifiedmorethanonceinaprogram,theusagecountisonlyincrementedby1andnonewtoolsareselected.·Usagetime

Whenatoolchangeisspecified(M06),toollifemanagementisstartedforthetoolsspecifiedbythetoolgroupnumber.Intoollifemanagement,thetimeduringwhichatoolisusedinthecuttingmodeiscountedinfoursecondincrements.Ifthetoolgroupischangedbeforetheincrementaltimeoffoursecondselapses,thetimeisnotcounted.Thetimeatoolisusedforsingleblockstop,feedhold,rapidtraverse,