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五轴数控加工轨迹优化方法研究.docx

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五轴数控加工轨迹优化方法研究 Abstract Withtherapiddevelopmentofmanufacturingtechnology,five-axisCNCmachininghasbecomeanimportantmeansfortheproductionofcomplexparts.However,intheprocessoffive-axisCNCmachining,theoptimizationofmachiningtrajectoryisstillakeyproblemthatneedstobesolved.Toimprovetheefficiencyandaccuracyoffive-axisCNCmachining,thispaperstudiesthetrajectoryoptimizationmethodoffive-axisCNCmachining,aimingtoprovideguidancefortheoptimizationoffive-axisCNCmachiningtrajectory. Keywords:five-axisCNCmachining,trajectoryoptimization,machiningefficiency,accuracy,cuttingforce Introduction Five-axisCNCmachiningiswidelyusedintheproductionofaircraftparts,automobileparts,medicaldevices,andotherhigh-precisionparts.Comparedwithtraditionalmachiningmethods,five-axisCNCmachininghastheadvantagesofhighefficiencyandaccuracy.However,intheprocessoffive-axisCNCmachining,theoptimizationofmachiningtrajectoryisessentialtoachievehighefficiencyandaccuracy. Inthispaper,wewillstudythetrajectoryoptimizationmethodoffive-axisCNCmachining.Firstly,thebasicprinciplesandcharacteristicsoffive-axisCNCmachiningwillbebrieflyintroduced.Secondly,theexistingresearchontrajectoryoptimizationoffive-axisCNCmachiningwillbesummarized.Finally,anewtrajectoryoptimizationmethodwillbeproposedbasedonthecharacteristicsoffive-axisCNCmachining. PrinciplesandCharacteristicsofFive-AxisCNCMachining Five-axisCNCmachiningreferstoaCNCmachiningmethodthatcancontrolthetooltomoveinfivedirections.ThefivedirectionsincludeX,Y,ZthreelineardirectionsandtworotationdirectionsaroundtheXandYaxes,thatis,A-axisandC-axis.Thefive-axisCNCmachininghasthefollowingcharacteristics: (1)Highmachiningaccuracy:Five-axisCNCmachiningcanachievehighmachiningaccuracybycontrollingthetooltomoveinmultipledirections. (2)Complexpartsmachining:Five-axisCNCmachiningcaneasilymachinecomplexpartswithmulti-facetedsurfacesandcurvedsurfaces. (3)Shortermachiningtime:Five-axisCNCmachiningcancompletemachininginashortertimebycontrollingthetooltomoveinmultipledirections. ExistingResea