>> P.311
3-17응용계산예예2의조건일때의수명시간과정적안전계수를산출합니다.또한하중계수fW는1.5로가정합니다.슬라이드유닛에작용하는하중의산출부하하중및테이블의질량과관성력에따라리니어웨이에는다음과같은각좌표축주변의모멘트가발생합니다.[발진가속일때][등속운동일때]Mr=m1gY1+m2gY2≒98000Mp=m1gX1+m2gX2≒2010000My=0[정지감속일때]여기서Mr:롤링방향모멘트N·mmMp:피칭방향모멘트N·mmMy:요잉방향모멘트N·mmMr=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)≒56000Mr=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)≒-56000예2사용리니어웨이.......................MH45C2R1050H슬라이드유닛간거리.............ℓ=200mm기본동정격하중.......................C=74600N스트로크길이..........................S=500mm기본정정격하중.......................C0=80200N분당왕복횟수..........................n1=6min-1T0방향정정격모멘트............T0=1610N·m최대이동속도.........................V=100mm/s테이블질량...............................m1=100kg가속시간...................................t1=0.1s테이블중심위치.....................X1=50mm등속운동시간..........................t2=4.9s...................Y1=0mm감속시간...................................t3=0.1s...................Z1=80mm구동위치....................................Yd=60mm워크질량...................................m2=1000kg....................................Zd=-20mm워크중심위치.........................X2=200mm........................Y2=10mm........................Z2=130mm0YZZℓℓℓ/2/2X0m2g워크의관성력m1g유닛1스트로크유닛2워크중심위치(X2,Y2,Z2)테이블중심위치(X1,Y1,Z1)구동위치(Yd,Zd)테이블의관성력t1t2t3속도mm/s시간S
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