【正文】 d on planned and open orders 58 Load Determination ? Open Orders (from order file status file maintained by production control) – order due date – order quantity – operations pleted – operation remaining ? MRPplanned Order Releases ( from MRP’s output) – planned order release date – planned order receipt date – planned quantity 59 Data Requirements for CRP ? Valid due dates on all released and planned orders ? Uptodate routings and processing information ? Accurate standards for setup and processing time ? A scheduling program to handle all operations ? A loading program to assign work to time periods ? Standard queue allowances for all work centers ? Estimates of load due to unplanned occurrences 60 MRP for FG 料件 100固定期間訂購 。 34 RCCP Procedure ? Converting units of product in the MPS to standard hours of work in individual centers ? To accumulate in each period in the MPS the total hours of work required to produce all products scheduled in that period – no LT offsetting – no lotsizing – no significant changes in inventories of items 35 Routing for Product X Product X SEQ Work Center Usage OP 1 1 hrs/pc OP 2 2 hrs/pc 1 2 4 3 8 7 6 5 PERIODS Planned Order Released Product X 100 50 80 100 40 60 90 36 Routing for Assy01 Assy01 1 2 4 3 8 7 6 5 PERIODS Planned Order Released Assy01 SEQ Work Center Usage OP 1 2 hrs/pc OP 2 3 hrs/pc 100 50 80 200 180 40 60 90 37 Resource Load Profile Work Center 2 0 50 100 150 200 250 1 2 3 4 5 6 7 8 Period Load Others Assy01 Pro X Capacity 38 BOM for FG 階層 零件 數(shù)量 /母項 說明 0 1 2 210011012112212610FGs ub a s s e m b l yc o m po n e n t Ac o m po n e n t B39 Item Master Files for FG I te m O r de rQ u a n ti tyO n H a n d O n O r de r D u eD a teL e a d T i m e A l l oc a te d100110121122L 4L40024006000050015002500250400240060007/37/107/107/101 w e e k2 w e e ks3 w e e ks4 w e e ks000040 Routing Files for FG P a rts W o rkCe n terS e tu p T im e /L o t Ru n T im e /P iec e100 1 3 0 m in 2 . 5 m in110 2110 m in15 m in0 . 7 5 m in0 . 5 0 m in121 31215 m in25 m in15 m in0 . 3 0 m in0 . 2 5 m in0 . 2 5 m in122 231325 m in30 m in75 m in30 m in0 . 7 5 m in0 . 1 5 m in0 . 5 0 m in0 . 7 5 m in41 Work Center Master Files W o r kC e n t e rA v a i l a b l e( mi n )U t i l i z a t i o n Eff i c i e n c y P l a n n e dQ u e u e1232 , 4 0 02 , 4 0 02 , 4 0 0100%100%100%100%100%100%4 d a y s4 d a y s4 d a y s42 MPS for Part 100 W e e k1 2 3 4 5 6 7 8 9 10 11 12Q u an t i t y 250 200 250 150 200 300 150 250 200 200 250 20043 RCCPProcess Time Computation Part Op n . LS SU Run Proc es s Qty/FG T o tal WC100 1 200 30 2 .50 2 .65 0 1 2 .65 0 11 1 0 1 400 10 0 .75 0 .77 5 2 1 .55 0 21 1 0 2 400 15 0 .50 0 .53 8 2 1 .07 6 1121 1 2400 15 0 .30 0 .30 6 6 1 .83 6 3121 2 2400 25 0 .25 0 .26 0 6 1 .56 0 1121 3 2400 15 0 .25 0 .25 6 6 1 .53 6 2122 1 6000 25 0 .75 0 .75 4 10 7 .54 0 2122 2 6000 30 0 .15 0 .15 5 10 1 .55 0 3122 3 6000 75 0 .50 0 .51 3 10 5 .13 0 1122 4 6000 30 0 .75 0 .75 5 10 7 .55 0 344 RCCPBOR Computation P a r t LS SU P r c e s s R un Q t y / F G T ot a l WC WCt o t a l100 400 15 2 1122 6000 75 10 1121 2400 25 6 1100 200 30 1 1 121 2400 15 6 21 10 400 10 2 2122 6000 25 10 2 122 6000 30 10 3122 6000 30 10 3121 2400 15 6 3 45 Rough Cut Capacity Requirements W eekW o r k Cent er 1 2 3 4 5 6 7 平均12326042657273420832125218726042657273415621594164020832125218731253188328115621594164022322277234346 RCCP 05001000150020xx2500300035001 2 3 4 5 6 7WC1WC2WC347 RCCP A11 A12 A22 A21 WC1 WC2 P1 P2 B11 B12 B22 B21 P1 P2 M1 M2 C11 C12 C22 C21 WC1 WC2 M1 M2 RCCP MPS BOR 48 Backward and Forward Scheduling OP N OP N1 OP 1 ……… Forward scheduling Backward scheduling Order Due Date Order Start Date OP N1 49 Infinite and Finite Loading Infinite Finite Capacity Capacity 050100150200P e r i o dLoadLoad 104 120 180 130 97 125 110 1501 2 3 4 5 6 7 8050100150200P e r i o dLoadLoad 110 120 120 120 105 120 110 1201 2 3 4 5 6 7 850 CRP Definition ? The function of establishing, measuring, and adjusting limits or level of capacity ? The process of determining in detail the amount of labor and machine resources required to acplish the tasks of production [APICS Dictionary] 51 Capacity Requiremen