>> P.311
Ⅲ-17ExamplesofLoadandLifeCalculationThelifeandstaticsafetyfactorinthecaseofExample2iscalculated.LoadfactorfWisassumedtobe1.5.❶CalculationofloadontheslideunitDuetotheappliedloadandthetablemassandinertiaforce,momentloadoccursaroundeachcoordinateaxisoftheLinearWayasshownbelow.〔Duringaccelerationatthestartofmotion〕Mr=Σ(FYZ)+Σ(FZY)=m1gY1+m2gY2=100×9.8×0+1000×9.8×10≒98000Mp=Σ{FX(Z-Zd)}+Σ(FZX)=m1Vmax―1000×t1(Z1-Zd)+m2Vmax―1000×t1(Z2-Zd)+m1gX1+m2gX2=00×100―1000×0.1×(80+20)+1000×100―1000×0.1×(130+20)+100×9.8×50+1000×9.8×200≒2169000My=-Σ{FX(Y-Yd)}+Σ(FYX)=-m1Vmax―1000×t1(Y1-Yd)-m2Vmax―1000×t1(Y2-Yd)=-100×100―1000×0.1×(0-60)-1000×100―1000×0.1×(10-60)≒56000〔Duringconstantspeedmotion〕Mr=m1gY1+m2gY2≒98000Mp=m1gX1+m2gX2≒2010000My=0〔Duringdecelerationattheendofmotion〕Mr=m1gY1+m2gY2≒98000Mp=-m1Vmax―1000×t3(Z1-Zd)-m2Vmax―1000×t3(Z2-Zd)+m1gX1+m2gX2≒1850000My=m1Vmax―1000×t3(Y1-Yd)+m2Vmax―1000×t3(Y2-Yd)≒-56000where,Mr:Momentloadintherollingdirection,N・mmMp:Momentloadinthepitchingdirection,N・mmMy:Momentloadintheyawingdirection,N・mmExample2LinearWayModelMH45C2R1050HDistancebetweenslideunitsℓ=200mmBasicdynamicloadratingC=74600NStrokelengthS=500mmBasicstaticloadratingC0=80200NNumberofstrokesperminuten1=6min-1StaticmomentratingintheT0directionT0=1610N・mMaximumtravelingvelocityV=100mm/sTablemassm1=100kgTimespentforaccelerationt1=0.1sPositionofthecenterofgravityoftableX1=50mmTimespentduringconstantspeedmotiont2=4.9sY1=0mmTimespentfordecelerationt3=0.1sZ1=80mmDrivepositionYd=60mmWorkmassm2=1000kgZd=-20mmPositionofcenterofgravityofworkX2=200mmY2=10mmZ2=130mm0YZZℓℓℓ/2/2X0m2gPositionofthecenterofgravityoftable(X1,Y1,Z1)InertiaforceoftheworkDriveposition(Yd,Zd)Positionofcenterofgravityofwork(X2,Y2,Z2)m1gUnit1StrokelengthUnit2Inertiaforceofthetablet1t2t3Velocitymm/sTimeS
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