数控机床定位精度和重复定位精度的检验

20088368MACHINETOOL&HYDRAULICSAug12008Vol136No18:2007-11-19:(1966),,,,,:13006758386,E-mail:aguo26@1631com(,528000):,,,,:;;;;:TP705:A:1001-3881(2008)8-191-2TestingofPositioningAccuracyandRepeatedPositioningAccuracyofCNCMachineToolLENGXiongtao(FoshanRadioandTVUniversity,FoshanGuangdong528000,China)Abstract:PositioningaccuracyandrepeatedpositioningofCNCmachinetooleffectsdirectlyitscuttingworkingaccuracyandtheaccuraciesvarywiththeuseandtheinfluencefactorsinuseprocess.Atestingapproachofpositioningaccuracyandrepeatedpositio2ningaccuracywasproposed,whichisconvenientforapplicationinpracticeproductionandcanmeetcompletelythetestingdemand.Inthismethod,thepositioningaccuracyandrepeatedpositioningaccuracyaretestedusingtheprecisionlinearscaleandthereadingmicroscope.Theproposedapproachhastheadvantageinpracticality,cost,andsoon.Thus,thetestingmethodissuitableforusingintheCNCworkshop.Keywords:CNCmachinetool;Positioningaccuracy;Repeatedpositioningaccuracy;Precisionlinearscale;Thereadingmicroscope,,,,,,,,,,,,[1]1,,,[2](),,,4J58,,m141mm,0100501015mm(40,010101012mm),1m0100101003mm[3],[4],(1),1,,515,,2,X:X=(sL-s0)-(yL-y0):s0;sLL;y0yLs0sL,2,[5],5,,1000mm,,,XX,2XmaxXmin,:A=|Xmax-Xmin|:A=Xmax+Xmin22Rp,6,()ii:i=nk=1(Xik-Xi)n-1:XikXi,i;n,,:=1MMi=1i:MRp=6,:TE=|Xmax-Xmin|+6:Gmax=A+TE2Gmin=A-TE2,uu:u=1MMi=1uiu3Au=Xmax+Xmin2TEu=|Xmax-Xmin|+6+u3[5],,,(),,(159)29136011s,0125s,0141m,6,,011s,,0114s,,1715MPa7,6,,110kN,,,240kN,88(a)12MPa,20MPa,995s8(b)0112s,,1715MPa9516L,5,,AMESim,:(1),(2),,,,(3),,,(315kg),,,,1,,,.[J].,2004,32(9):58-60.2.[J].,2007(4):62-64.3.[M].:,1998.12.4,,.AMESim[M].:,2006.(192)3,,,,,1,.[M].:,2004.2.[M].:,2007.3.[M].:,2001.4.[M].:,2002.5.GB/T17421.2-20002:[S].:,2000:1.9518: