>> P.311
DistancebetweenslideunitsStrokelengthNumberofstrokesperminuteMaximumtravelingvelocityTimespentforaccelerationTimespentduringconstantspeedmotionTimespentfordecelerationDrivepositionℓSn1Vt1t2t3YdZd=========200mm500mm6min-1100mm/s0.1s4.9s0.1s60mm-20mmZInertiaforceoftheworkStrokelengthInertiaforceofthetableℓ/20ℓℓ/2Unit1XZm2gm1g0t1Positionofcenterofgravityofwork(X2,Y2,Z2)Positionofthecenterofgravityoftable(X1,Y1,Z1)YUnit2Driveposition(Yd,Zd)t2TimeSt3Velocitymm/sExamplesofLoadandLifeCalculationExample2LinearWayModelBasicdynamicloadratingBasicstaticloadratingStaticmomentratingintheT0directionTablemassPositionofthecenterofgravityoftableWorkmassPositionofcenterofgravityofworkMH45C2R1050HCC0T0m1X1Y1Z1m2X2Y2Z2===========74600N80200N1610N・m100kg50mm0mm80mm1000kg200mm10mm130mm〔Duringconstantspeedmotion〕Mr=m1gY1+m2gY2≒98000Mp=m1gX1+m2gX2≒2010000My=0〔Duringdecelerationattheendofmotion〕Mr=m1gY1+m2gY2≒98000Mp=-m1Vmax―1000×t3(Z1-Zd)-m2+m2gX2≒1850000Vmax―1000×t3(Z2-Zd)+m1gX1My=m1Vmax―1000×t3(Y1-Yd)+m2Vmax―1000×t3(Y2-Yd)≒-56000where,Mr:Momentloadintherollingdirection,N・mmMp:Momentloadinthepitchingdirection,N・mmMy:Momentloadintheyawingdirection,N・mmThelifeandstaticsafetyfactorinthecaseofExample2iscalculated.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=100×100―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)≒56000Ⅲ-17
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