螺旋铣和坡走铣

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1、螺旋差补铣Circularinterpolation解决方案PioneeringsolutionsRampingfromsolid在实体上斜走Circularinterpolation走内螺旋线Machiningintocorners加工到边角Restmilling清根Trochoidalmilling摆线铣1Dvf=Dm-DeDmDVfDc螺旋差补走－斜走Circularinterpolation–ramping刀体尺寸的选择Cutterdiameterselection盲孔Blindhole–平底

2、flatbottomMaxDc=0.80xDmMinDc=0.5xDmDcradDerad通孔ThroughholeMaxDe=0.80xDm2ap=TanθxDvfDvf=Dm-DcCircularinterpolation–ramping最大螺距－切深Maxpitch-apDmDVfDCθDvfapapθ=max坡走角度rampangle3Circularinterpolation–ramping螺旋进给率CalculatingfeedratesapDmDVfDCVf1Vf2Vf2=nxfzx

3、zVf1=DvfxVf2Dm4CosB=Dc²+(Dm-Dc)²-Dw²2*Dc*(Dm-Dc)θ=180-BDcDwDm-DcABCθae=Dc–(CosθxDc)2fz=hexsinθCircularinterpolation–(Dm-Dw)/2

4、VftcVftcVfperVftcfzfzper拐角处的加工Machiningintoacorner进入角，铣宽和进给Engagementangle,aeandfeed拐角处的进给要降低，因为：feedneedstobereducedincornerdueto:-铣宽变大；increasedae周边的进给速度比刀具中心的进给速度快；peripheralfeedfargreaterthantoolcentrefeedθradaeradDVfDCaeθradlnfzfzVftcVftcVfradVfper

5、6MachiningintoacornerEngagementangle,aeandfeedDc/radratio7MachiningintoacornerEngagementangle,aeandfeed8拐角处的清根铣削Restmillingintoacorner进入角，铣宽和进给Engagementangle,aeandfeedaetot=radw-radw+radm-radmsin(θ/2)sin(θ/2)aetotradm(6)radw(20)θaetot=14mmaetot=5.8mmae

6、totradm(6)radw(20)θ9RestmillingintoacornerEngagementangle,forsetaeaemaxDVfDCrad(6)radw(20)radm(17,5)CosB=(0.5Dc)²+((radw+ae)-0.5Dc)²-radw²Dc*((radw+ae)-0.5Dc)θθABCradwDc(radw+ae)-0.5Dcθ=180-Baemax=Dc–(CosθxDc)2modifiedfeedcalculatedforrespectiveDvf10Res

7、tmillingintoacornerEngagementangle,forsetaeaemaxDVfDCθradwradmaemaxDVfDCfinradradwradmθ最大铣宽和θ??aemaxandθincreaseswithsmallerradm11RestmillingintoacornerEngagementangle,optimisedaeaemaxDVfDCradw(20)radm(17,5)x=sinθxDc/2Cosθ=(0.5Dc-aemax)0.5Dcy=√radw²-x²θ

8、θxzz=y+aemaxradwyxw=z-radww进给和铣宽的计算optimisedfeedandaecalculated12RestmillingintoacornerEngagementangle,optimisedaeu=v–z=tv=radwCos0.5θzwradwθvuradmstradm=t-t1-Cos(90-0.5θ)optimisedfeedandaecalculated13Restmillingintoa90°corneropt