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1、数控技术及数控机床试题与参考答案（NCtechnologyandNCmachinetestquestionsandreferenceanswers）NCtechnologyandNCmachinetestpaperStudentName:Class:studentnumber:grade:Fillintheblanks(4points,36pointseach)ThemostbasicprobleminNCmachiningisthegeometryandTherawdataanditsinstructionsareobtainedbycorrespondinginterp
2、olationoperations.Accordingtoacertainrelationshiptothedrivecontrollerassignedtoeachcoordinateaxis,whichmakesthetrajectoryrelativetothespindledriveplatform,withacertainprecisionapproachtotheprocessingofpartsofthecontoursize.Accordingtothequantityofprocessingandthecomplexityofparts,trytomark
3、theapplicablepositionofuniversalmachinetools,specialmachinetoolsandnumericalcontrolmachinesinthefollowingarea.PowersteppermotorisgenerallyusedforCNCtransformationofgeneralmachinetools,aswellasthesituationoflowprecisionrequirementsandothersystems.Thestepangleofsteppingmotormeans.Forthree-ph
4、asesteppingmotors,whenthenumberofteethisdoubleconnected,thenumberofteethis40.Atthistime,stepangle=.InordertoensuretheNCmachinetoolforprocessingthecuttingspeedisalwaysthemostfavorable,orHuanspeedcuttingfunctionofNCmachinetoolspindlespeed,usuallyinitsspeedrange.Therefore,modernCNCmachinetool
5、sareoftenadoptedAsthepowersourceofthemainmovement.MinimumsettingunitofCNCmachinetoolsisastandardsystemforCNCmachinetoolaccuracyresolution,itsvalueisgenerally,intheprogramming,allprogrammingunitsshouldbeconvertedintothecorrespondingdatawithminimumsettingunit.Usually,thelathebedofthenumerica
6、lcontrollatheisinclinedtobearrangedtoimprovethesumoftheguiderailofthelathebed.Improvethestaticstiffnessofmachinetools.Numericalcontroltechnologyistechnology;computernumericalcontrol(CNC)refersto;numericalcontrolmachinetoolshave,,andsoon.Intermsofthemethodofimplementation,theinterpolatorcan
7、beusedorclassifiedaccordingtoitsfunctions.Itcanbedividedinto,andsoon.Toolradiuscompensationrefersto.Theleftoffsettoolradiuscompensationinstructionandtherightoffsetcutterradiuscompensationcommandaresum,respectively.Ashortanswer(6pointspergame,18points)Whatisthe
