>> P.312
loadsappliedoneachslideunitarecalculatedTheaccordingtoTable6.2onpageⅢ-9.〔Duringaccelerationatthestartofmotion〕Becausethedynamicequivalentloadchangesstepwisealongthetravelingdistance,themeanequivalentloadiscalculatedfrom①inTable7onpageⅢ-14.+178003×100×4.9t33̶̶̶)Vmax23̶̶̶+P1b3Vmaxt2+P1ct1Vmax2̶(P1a1S=3Pm1={1―500×(188003×100×0.1―2+172003×100×0.1―2)}1/3≒17800{1―500=m2P×(91503×100×0.1―2+72403×100×0.1―2)}1/3≒8000+79903×100×4.9Thebasicratinglifeofslideunit1receivingthelargestdynamicequivalentloadiscalculated.Thebasicratinglifeisobtainedbytheformula(1)givenonthepageⅢ-6consideringtheloadfactorfw(seeTable1onpageⅢ-6).≒1090≒303074600―1.5×17800)3)3=50(106×1090―2×500×6×60=C―fWPm1106L1―2Sn1×60=50(L1Lh1=Astheresultofcalculationabove,thebasicratinglifeisabout3,030hours.❸CalculatingofstaticsafetyfactorThestaticequivalentloadiscalculatedfromtheupward/downwardloadandlateralloadbyformula(11)onpageⅢ-8.〔Duringaccelerationatthestartofmotion〕P01a=k0r│Fr1│+k0a│Fa1│+C0―│M01│=1×16200+1.28×280T0+80200―1610×49000―1000≒19000P02a=k0r│Fr2│+k0a│Fa2│+C0―│M02│=1.19×5460+1.28T0×280+80200―1610×49000―1000≒9300〔Duringconstantspeedmotion〕P01b=1×15400+1.28×0+80200―×49000―10001610≒19000P02b=1.19×4660+1.28×0+80200―1610×49000―1000≒7990〔Duringdecelerationattheendofmotion〕P01c=1×14600+1.28×280+80200―1610×49000―1000≒17400P02c=1.19×3860+1.28×280+80200―1610×49000―1000≒7390Thestaticsafetyfactorofslideunit1duringaccelerationatthestartofmotionreceivingthelargeststaticequivalentloadiscalculated.Thestaticsafetyfactoriscalculatedbyformula(4)onpageⅢ-6.fs=C0―P01a=80200―19000≒4.2Astheresultofcalculationabove,thestaticsafetyfactorisabout4.2.1N=0.102kgf=0.2248lbs.1mm=0.03937inchⅢ-18+Mp―ℓ+2169000―200-Mp―ℓ≒-5460≒16200Fr1=Fr2=Fa1=Fa2=+Mp―ℓ=m1g+m2g―2ΣFZ―2=100×9.8+1000×9.8――2+Mp―ℓ=m1g+m2g―2ΣFZ―2ΣFY―2+My―ℓΣFY―2-My―ℓMr―2=49000=-280=280M01=M02=――〔Duringconstantspeedmotion〕=100×9.8+1000×9.8≒-4660=Fa2=0Fr1Fr2Fa1M01=M02=490002+2010000―200≒15400〔Duringdecelerationattheendofmotion〕+1850000―=100×9.8+1000×9.8――Fr12≒14600200≒-3860≒-280≒280Fr2Fa1Fa2M01=M02=49000❷CalculatingofratinglifeTheupward/downwardload,lateralloadandthemomentloadalongT0directionarecalculatedbytheformula(6)and(7)onpageⅢ-7,andthedynamicequivalentiscalculatedbyformula(10).load〔Duringaccelerationatthestartofmotion〕Fre1=kr│Fr1│+C0―M01│=1×16200+80200―│×49000―10001610T0≒1860010001610≒8940×49000―Fre2=1.19×5460+80200―Fae1=ka│Fa1│=1.28×280≒358Fae2=1.28×280≒358P1a=XFre1+YFae1=1×18600+0.6×358≒18800P2a=XFre2+YFae2=1×8940+0.6×358≒9150〔Duringconstantspeedmotion〕Fre1=1×15400+80200―1610×49000―1000≒17800≒7990×49000―10001610Fre2=1.19×4660+80200―Fae1=0Fae2=0P1b=17800P2b=7990〔Duringdecelerationattheendofmotion〕Fre1=1×14600+80200―1610×49000―1000≒17000≒703010001610×49000―Fre2=1.19×3860+80200―Fae1=1.28×280≒358Fae2=1.28×280≒358P1c=1×17000+0.6×358≒17200P2c=1×7030+0.6×358≒7240
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