MidtermAidSheet

MidtermAidSheet - -+ = Hollier I - Tie breaker rules: (a)...

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ENGR3300U – Integrated Manufacturing Systems Winter 2011 Midterm Aid Sheet Chapter 3 T c = T o + T h + T th , R c = 60/T c Batch: T b = T su + QT c , T b / Q, Q T b / 60 Flow line: T c = T r + Max T o , PC = nS w H sh R p , PC = nS w H sh R p / n o, = + + = o n i noi ci sui T QT T MTL 1 ) ( MTL (average) = n o (T su + QT c + T no ), MTL = n o (T r + MaxT o ) = n o T c PC Q U = , fail between mean time repair to mean time - fail between mean time = A , 1 ) 1 ( ) 1 ( ) , , | ( - + + = n n i i i n i P A Chapter 14 UT = n p T c , Cycle time = T c = T m + T s with pallet changer T c = T m + T s or T c = Max{ T m , T s } + T r Workload = QT c , # of stations = Workload for week Hrs avail for week on a machine to perform workload q Q Q o - = 1 , ) 1 ( q E QT Workload w c - = , r s s m T T T T n + + = , r s s m T T T T n + + = integer max Cost per piece round down = (C L /n 1 + C m )(T m + T s ) Cost per piece round up = (C L + C m n 2 )(T r + T s ) Chapter 18
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2 3 2 2 2 1 2 0 Mach F G H I Deci mal rank 1 1 2 1 3 1 Mach E F G H I 3 1 1 2 2 6 1 2 1 2 1 1 2 0 Decimal rank (Askin’s Definition) = = j ij i ij ij n n n n MAX s , , (McAulay’s Definition) = ij j i ij ij n n n n s
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Unformatted text preview: -+ = Hollier I - Tie breaker rules: (a) If a tie occurs between minimum to sums or minimum from sums, the machine with the minimum From/To ratio is selected. (b) If both to and From sums are equal for a selected machine, it is passed over and the machine with the next lowest sum is selected. (c) If a minimum to sum is equal to a minimum From sum, then both machines are selected and placed at the beginning and end of the sequence, respectively. Hollier II Tie breaker rule: In case of a tie, the machine with the higher From value is placed ahead of the machine with lower value....
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MidtermAidSheet - -+ = Hollier I - Tie breaker rules: (a)...

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