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【正文】 u m b e r o f Wo r k s t a t i o n s , NN = S u m o f t a s k t i m e s ( T )C y c l e t i m e ( C )ttN = 1 1 . 3 5 m i n s / u n i t4 . 2 m i n s / u n i t = 2 . 7 0 2 , o r 3tWhy should we always round up? 20 169。The McGrawHill Companies, Inc., 1998 Irwin/McGrawHill 38 ( C ) ( T ) =NNtt周期時(shí)間任務(wù)總次數(shù)工作站最低理論數(shù)量 ,3 2 .7 0 2 , =/ 4 .2 / 1 1 .3 5 =N t 或單元分 單元分我們?yōu)槭裁纯傄纳嵛迦?? 20 169。The McGrawHill Companies, Inc., 1998 Irwin/McGrawHill 39 21 Some Rules We’ll Follow for Loading Workstations ? Primary: Assign tasks in order of the largest number of following tasks. ? Secondary (tiebreaking): Assign tasks in order of the longest operating time 40 21 給各工作崗位分配工作量應(yīng)遵循的一些規(guī)則 ?首先 : 按以下任務(wù)從大到小的順序分配任務(wù) 。 ?其次 (平局決勝 ): 按操作時(shí)間從長(zhǎng)到短分配任務(wù) 。 41 A C B D E F G H 2 1 .5 1 1 Station 1 Station 2 Station 3 Task Followers Time (Mins) A 6 2 C 4 D 3 B 2 1 E 2 F 1 1 G 1 1 H 0 23 169。The McGrawHill Companies, Inc., 1998 Irwin/McGrawHill 42 A C B D E F G H 2 1 .5 1 1 第 1崗位 第 2崗位 第 3崗位 任務(wù) 時(shí)間 (分 ) A 6 2 C 4 D 3 B 2 1 E 2 F 1 1 G 1 1 H 0 23 169。The McGrawHill Companies, Inc., 1998 Irwin/McGrawHill 追隨者 43 33 Efficiency of the Assembly Line E f f i c i e n c y = S u m o f t a s k t i m e s ( T )A c t u a l n u m b e r o f w o r k s t a t i o n s ( N a ) x C y c l e t i m e ( C )E f f i c i e n c y = 1 1 . 3 5 m i n s / u n i t( 3 ) ( 4 . 2 m i n s / u n i t ) =. 90144 33 裝配生產(chǎn)線的效率 ( C ) x ( N a ) ( T ) = 周期時(shí)間實(shí)際工作崗位總數(shù) 任務(wù)總次數(shù)效率9 0 1.=)/( 3 ) ( 4 . 2 / 1 1 . 3 5= 單元分 單元分效率
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