【正文】 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 59 MRP for FG 料件 100固定期間訂購 。 ? 不是為了作為途程 (Routing)用途。 CRP MRP。 Line Balancing JIT 15 Manufacturing System Model Business Planning Sales Planning Production Planning MPS MRP Demand Management Finance Planning Resource Requirements Planning RoughCut Capacity Planning Capacity Requirements Planning Purchasing Production Activity Control Mid Term LongTerm ShortTerm Inventory Management Input/Output Control 16 Capacity Management in MPS System Resource requirements planning Roughcut capacity planning Capacity requirements planning Purchasing Material requirements planning Message to BUY or MAKE Production activity control Master production scheduling Production planning Input/Output analysis Operation Sequencing 17 Capacity Planning and Control Priority Capacity Planning Control PP MPS MRP RRP RCCP CRP Input/Output Control Operation Sequencing 18 Capacity Definition ? The rate at which work is withdraw from the system. ? The highest reasonable output rate which can be achieved with the current product specifications, product mix, work force, plant, and equipment. [APICS dictionary] 19 Capacity Management ? The function of establishing, measuring, monitoring, and adjusting limits or levels of capacity in order to execute all manufacturing schedules. [APICS dictionary] ? Include – capacity planning – capacity control 20 Work Center and Load ? Work Center – A specific production facility, consisting of one or more people and/or machines, which can be considered as on unit for purposes of capacity requirements planning and detailed scheduling. [APICS dictionary] ? Load – The amount of scheduled work ahead of a manufacturing facility, usually expressed in terms of hours of work or units of production. [APICS dictionary] 21 Wight’ s Funnel CAPACITY LOAD OUTPUT 22 Capacity and Load [APICS] Capacity Load (每一作業(yè)之 Setup 及 run times) 工程研發(fā)工單 PM 重工工單 計劃工單 已發(fā)放工單 加班及外包 考慮人員 , 設(shè)施 ,之 available hours 及 Time Efficiency Rate 減項 Breaks, Downtime, Rework Absenteeism, Daily, Maintenance, Other 23 Capacity Planning Terms Load Available Week Hours per resource Capacity Utilization Scenarios Load Available Load Available Load Available Balanced Underloaded Overloaded Determining Capacity Available ? Demonstrated (Measured) Capacity – the average recent output actually achieved , is figured from historical data – is defined as average output, not max output ? Rated (Calculated) Capacity – available hours utilization efficiency 26 6% 6% 62% 13% 13% Breaks R. Maintenance Run Time Unutilized but scheduled time Setup Time Utilization Actual time used (run and setup) Scheduled time intended for production Utilization = A measure of how intensively a resource is being used…. 27 Utilization Example: Breaks: 20 minutes per shift Routine maintenance: 10 minutes per shift Run time charged: 6 hours Setup time: hour Utilization = 28 Efficiency ? A measure of how closely predetermined standards are achieved. Actual output (standard hours earned) Standard output expected (scheduled) efficiency = 29 Efficiency Example: Work center: 3 machines, two 8hrs shifts, five days a week Breakdown: 12 hrs per week Utilization = records indicate that the work center produced an average of sta. Hours of output. Efficiency = Capacity = 30 Capacity Determination Shift per Day ? Machines or Work Stations ? Hours per Shift ? Days per Week ? Utilization ? Efficiency = Standard Hours per Week Ex: Shifts = 3 Shift Length = 8 hrs 5 Days per Week Number of Machines = 6 Machine Utilization = .8 Efficiency = .9 31 RoughCut Capacity Planning ? The need for long planning horizons and the lack of specific, accurate data for many important factors make RCCP techniques more practical than detailed calculations ? A capacity plan should not be deferred。 ? 只是一種估計特定料項所需產(chǎn)能的方法。 訂購期間 : 1。 訂購數(shù)量 : 2400。 , February 2, 2023 ? 雨中黃葉樹，燈下白頭人。 :52:3818:52:38February 2, 2023 ? 1他鄉(xiāng)生白發(fā)，舊國見青山。 2023年 2月 2日星期四 6時 52分 38秒 18:52:382 February 2023 ? 1做前，能夠環(huán)視四周；做時，你只能或者最好沿著以腳為起點的射線向前。 :52:3818:52Feb232Feb23 ? 1世間成事，不求其絕對圓滿，留一份不足，可得無限完美。 。 , February 2, 2023 ? 閱讀一切好書如同和過去最杰出的人談話。勝人者有力，自勝者強(qiáng)。 2023年 2月 2日星期四 6時 52分 38秒 18:52:382 February 2023 ? 1一個人即使已登上頂峰，也仍要自強(qiáng)不息。 2023年 2月 2日星期四 下午 6時 52分 38秒 18:52: ? 1最具挑戰(zhàn)性的挑戰(zhàn)莫過于提升自我。 :52:3818:52Feb232Feb23 ? 1越是無能的人，越喜歡挑剔別人的錯兒。 2023年 2月 2日星期四 6時 52分 38秒 18:52:382 February 2023 ? 1空山新雨后，天氣晚來秋。 :52:3818:52:38February 2, 2023 ? 1意志堅強(qiáng)的人能把世界放在手中像泥塊一樣任意揉捏。 , February 2, 2023