物流運輸概述(已改無錯字)
2023-01-17 09:00:13 本頁面
【正文】 量4 建議的加工及采購計劃1 生產(chǎn)什么？2 用到什么？3 已有什么？4 還缺什么？何時定貨？（量） (期 )MRP 回答了 4 個制造業(yè)的主要問題問 答 制造業(yè)的通用公式（生產(chǎn)什么 用到什么） － 已有什么 ＝ 還缺什么月份 1 2床墊產(chǎn)量 900 9501 2 3 4 5 6 7 8327型號 200 400 200 100538型號 100 100 150 100749型號 100 200 200棉墊、彈簧、硬木MRP主生產(chǎn)計劃綜 合生產(chǎn)計劃Bill of Materials (BOM) FileA Complete Product DescriptionBOM文件包含完整的產(chǎn)品說明、不止羅列了物料、零件與配件，還羅列了產(chǎn)品生產(chǎn)的順序。輸入 MRP程序的三個主要來源：? BOM文件? 主生產(chǎn)計劃? 庫存記錄文件? A產(chǎn)品的物料清單（產(chǎn)品結(jié)構(gòu)樹）B(4)E(1)D(2)C(2)F(2)D(3)A2 例子：圓珠筆產(chǎn)品結(jié)構(gòu)樹園珠筆筆芯筆筒筆油墨 筆芯頭 筆芯桿筆帽Example of MRP Logic and Product Structure TreeU(2)X(2)W(1)V(3)Y(2)W(2)TProduct Structure Tree for Assembly A Lead TimesT 1 weekU 2 weeksV 2 weeks W 3 weeksX 1 weekY 1weekGiven the product structure tree for “A” and the lead time and demand information below, provide a materials requirements plan that defines the number of units of each ponent and when they will be needed7周內(nèi)完成 100單位產(chǎn)品的 MRP?The McGrawHill Companies, Inc., 202365Example of MRP Logic and Product Structure TreeB(4)E(1)D(2)C(2)F(2)D(3)AProduct Structure Tree for Assembly A Lead TimesA 1 dayB 2 daysC 1 dayD 3 daysE 4 daysF 1 dayTotal Unit DemandDay 10 50 ADay 8 20 B (Spares)Day 6 15 D (Spares)Given the product structure tree for “A” and the lead time and demand information below, provide a materials requirements plan that defines the number of units of each ponent and when they will be neededLT = 1 dayFirst, the number of units of “A” are scheduled backwards to allow for their lead time. So, in the materials requirement plan below, we have to place an order for 50 units of “A” on the 9th day to receive them on day 10.Next, we need to start scheduling the ponents that make up “A”. In the case of ponent “B” we need 4 B’s for each A. Since we need 50 A’s, that means 200 B’s. And again, we back the schedule up for the necessary 2 days of lead time.B(4)E(1)D(2)C(2)F(2)D(3)ASparesLT = 24x50=200B(4)E(1)D(2)C(2)F(2)D(3)APart D: Day 6Finally, repeating the process for all ponents, we have the final materials requirements plan:?The McGrawHill Companies, Inc., 202369B(4)E(1)D(2)C(2)F(2)D(3)A40 + 15 sparesPart D: Day 6Finally, repeating the process for all ponents, we have the final materials requirements plan:?The McGrawHill Companies, Inc., 202370MRP的目的MRP的目的? 控制庫存水平? 確定產(chǎn)品生產(chǎn)的優(yōu)先等級以及計劃生產(chǎn) 系統(tǒng)的能力負荷宗旨：使合適的物料在合適的時間到達 合適的地點。訂貨
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