数控凸轮轴高速磨削工件主轴转速优化理论与实验分析

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1、ABSTRACTWiththeimplementationofenergyconservationandgreenmanufacturingindustrypolicy，camshaftisthekeycomponentsoftheengineforautomobile,shipsinnewhightechnologyfields,thecomprehensiveperformanceoftheengineisdirectlyaffectedbyitsprocessingquality,soitscontourmachiningaccuracyrequ

2、irementsofprocessingareincreasing.CamshaftprocessingmethodshasbeenraisedfromthemechanicalcamgrindingtoCNCmachining,greatlyimprovingthecontouraccuracyandsurfacequality.Whengrindingnon-circularcontourofthecamlift,thegrindingspeedchangedramatically,CaxisandXaxisgrindingwithgreatacc

3、eleration,themachinetoolservosystemcausegreatermechanicalshock,grindingservosystemmaynotmeettherequirementsofhighspeedmachiningduetothepossibilityofproducingaresponselag.Soitisnecessarytooptimizeandadjusttheworkpiecespindlespeedbasedonthegrindingmachinesprocessingfeedcapacitycon

4、straints.Inthispaper,highspeedCNCcamshaftgrindingworkpiecespindlespeedastheresearchobject,thecamshaftCNCgrindingmotionmathematicalmodelisbuilt,derivedcamworkpiecespindlespeedequationunderconstantlinearvelocityconditions.Analyzetheconstantlinearspeedoftheworkpiecespindlespeedwhic

5、hisaffectingtheprocessingquality.Setthemaximumaccelerationlimitationvalueofwheelheedbasedontheprocessingcapacityofthecamshaftgrindingmachine.Forthepartaccelerationofwheelheedfeedingprocesswhichexceedslimitvalue,byintegratingtosolvetheworkpiecespindlereversepermittedmaximumspeed,

6、andusethespeedreplacetheconstantlineartheoreticalspeedoncorrespondingcornerrange.TheoptimizedworkpiecespeedfittingbycubicsplinecurveisappliedinCNC8325BCNCcamshaftgrindingmachineforgrindingexperiment,theexperimentalresultsshowthatthequalityandefficiencyareimprovedintheprocessingo

7、fthecamshaft.Researchworkincludethefollowing:(1)AnalyzethecamshaftCNCgrindingcharacteristicsandprocessmethods,studiedthespindlefeedservosystemperformanceandstructuralcharacteristicsofthecamshafthighspeedCNCgrinding.Comparetheprocessingcharacteristicsofconstantanglegrindingandthe

8、constantlinearspeedprocessingcharacteristicsofc