JP2000172768A - Safety stock volume calculating device - Google Patents
Safety stock volume calculating deviceInfo
- Publication number
- JP2000172768A JP2000172768A JP34426498A JP34426498A JP2000172768A JP 2000172768 A JP2000172768 A JP 2000172768A JP 34426498 A JP34426498 A JP 34426498A JP 34426498 A JP34426498 A JP 34426498A JP 2000172768 A JP2000172768 A JP 2000172768A
- Authority
- JP
- Japan
- Prior art keywords
- maximum
- shipment
- period
- safety stock
- amount
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004364 calculation method Methods 0.000 claims description 46
- 239000000047 product Substances 0.000 abstract 2
- 239000006227 byproduct Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/30—Computing systems specially adapted for manufacturing
Landscapes
- Multi-Process Working Machines And Systems (AREA)
- Warehouses Or Storage Devices (AREA)
- Control By Computers (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
- General Factory Administration (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、見込み生産品で在
庫量を管理する場合に、需要変動に対応するための安全
在庫量を設定する必要がある生産管理プロセスに適用さ
れる安全在庫量計算装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety stock amount calculation method applied to a production management process in which a safety stock amount for responding to demand fluctuations needs to be set when managing a stock amount of a prospective product. Related to the device.
【０００２】[0002]
【従来の技術】従来より、需要変動が比較的小さい場合
の安全在庫量を計算する方法として、「生産システム工
学」（人見勝人著 共立出版）の９１頁等に記載されて
いる計算方法がある。この計算方法は、過去の出荷量の
標準偏差と、リードタイムと、サービス率の程度を表す
係数の安全係数とから、安全在庫量を計算するようにな
っている。2. Description of the Related Art Conventionally, as a method for calculating a safety stock amount when a fluctuation in demand is relatively small, a calculation method described in page 91 of "Production System Engineering" (Katsuto Hitomi, Kyoritsu Shuppan), etc. There is. In this calculation method, the safety stock amount is calculated from the standard deviation of the past shipment amount, the lead time, and the safety coefficient of the coefficient indicating the service rate.
【０００３】すなわち、過去の日々の出荷量と、リード
タイム期間内の平均出荷量とに基づいて標準偏差（α）
を求める。そして、目標とするサービス率から安全係数
（Ｋ）を設定する。例えば、９５％の需要を満たす場合
には、Ｋ＝１．６５となる。[0003] That is, the standard deviation (α) is based on the past daily shipment volume and the average shipment volume during the lead time period.
Ask for. Then, a safety coefficient (K) is set from the target service rate. For example, if the demand of 95% is satisfied, K = 1.65.
【０００４】そして、生産リードタイムを（Ｌ）とする
と、安全在庫量（ＳＳ）は、 安全在庫量（ＳＳ）＝Ｋ×α×√Ｌ ・・・（１） という計算式で計算される。[0004] Then, assuming that the production lead time is (L), the safety stock amount (SS) is calculated by the following formula: safety stock amount (SS) = K × α × √L (1).
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、このよ
うな従来の計算方法では、需要の変動が小さく安定して
いる場合を特に想定しているため、需要変動が大きい場
合（例えば、月に１〜２程度しか出荷がない場合等）に
おいては、適切な安全在庫量が計算できない場合が多
い。従って、このような場合には、担当者の判断によっ
て安全在庫量を個別に設定していた。そのため、設定す
る担当者の経験度により、設定した安全在庫量が少なか
ったり、また多すぎたりして、適正な安全在庫量を設定
することが難しいといった問題があった。However, in such a conventional calculation method, since the case where the fluctuation of demand is small and stable is particularly assumed, the case where the fluctuation of demand is large (for example, one to one per month). In some cases, such as when there are only about two shipments), an appropriate amount of safety stock cannot be calculated in many cases. Therefore, in such a case, the safety stock amount is individually set by the person in charge. Therefore, there is a problem that it is difficult to set an appropriate safety stock amount because the set safety stock amount is small or too large depending on the experience level of the person in charge of setting.
【０００６】本発明はこのような問題点を解決すべく創
案されたものであって、その目的は、需要変動が大きい
製品に対しても、品切れを起こさないように論理的かつ
適正に安全在庫量を計算することができる安全在庫量計
算装置を提供することにある。SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and an object of the present invention is to provide a logically and appropriately safe stock of a product having a large fluctuation in demand so as not to be out of stock. An object of the present invention is to provide a safety stock amount calculating device capable of calculating the amount.
【０００７】[0007]
【課題を解決するための手段】上記課題を解決するた
め、本発明の安全在庫量計算装置は、見込み生産品で在
庫量を管理する場合の安全在庫量を計算する装置であっ
て、生産計画を立てる周期に基づき、基準在庫量を切っ
てから生産納入されるまでの生産リードタイム期間の最
大値を最大生産リードタイム期間として設定する最大期
間設定部と、この最大期間設定部で設定された最大生産
リードタイム期間中の出荷量の合計を、過去の出荷デー
タに基づき、過去の一定期間にさかのぼって計算し、そ
の計算値の中の最大値を期間最大出荷量として設定する
最大出荷量計算部と、過去の出荷データに基づき、同じ
過去の一定期間における一日の平均出荷量を計算する平
均出荷量計算部と、前記最大生産リードタイム期間、期
間最大出荷量、及び平均出荷量に基づいて製品別の安全
在庫量を計算する安全在庫量計算部とを備えた構成とし
たものである。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a safety stock amount calculating device according to the present invention is a device for calculating a safety stock amount when managing a stock amount of a prospective product, and comprising: The maximum period setting unit that sets the maximum value of the production lead time period from the time when the standard inventory amount is cut to the time when production is delivered as the maximum production lead time period based on the cycle of setting the Maximum shipment volume calculation that calculates the total shipment volume during the maximum production lead time period based on past shipment data and goes back to a certain period in the past, and sets the maximum value of the calculated value as the maximum shipment volume for the period Part, based on past shipment data, an average shipment quantity calculation unit that calculates the average shipment quantity per day in the same past fixed period, the maximum production lead time period, the maximum shipment quantity during the period, and Is obtained by a structure in which a safety stock quantity calculation unit for calculating a product-specific safety stock quantity based on the average shipments.
【０００８】また、本発明の安全在庫量計算装置は、上
記構成において、前記安全在庫量計算部が、（安全在庫
量＝期間最大出荷量−平均出荷量×最大生産リードタイ
ム期間）の計算式によって安全在庫量を計算するように
構成したものである。Further, in the safety stock amount calculating device according to the present invention, the safety stock amount calculation unit is configured such that the safety stock amount = the maximum shipment amount during the period−the average shipment amount × the maximum production lead time period. Thus, the safety stock amount is calculated.
【０００９】つまり、最大期間設定部は、生産計画を立
てる周期（生産サイクル）と生産計画を立ててから実際
に生産されるまでの期間とを考慮して、最も長い時間が
かかる場合を最大生産リードタイム期間として設定す
る。That is, the maximum period setting unit considers a cycle (production cycle) for making a production plan and a period from when the production plan is made to when it is actually produced. Set as the lead time period.
【００１０】最大出荷量計算部は、最大期間設定部で設
定された最大生産リードタイム期間を一つの期間とし
て、その期間内の出荷量を、過去の出荷データに基づ
き、過去の一定期間にさかのぼって計算する。つまり、
その計算の開始日と終了日（開始日と終了日との間隔
は、最大生産リードタイム期間となっている）を、過去
の一定期間（例えば、過去１年間）内で一日ずつスライ
ドさせて、それぞれの期間の出荷量を計算する。そし
て、その計算値の中の最大値（期間最大出荷量）を見つ
け出す。[0010] The maximum shipment amount calculation unit sets the maximum production lead time period set by the maximum period setting unit as one period, and returns the shipment amount within that period to a predetermined period in the past based on past shipment data. To calculate. That is,
The start date and the end date of the calculation (the interval between the start date and the end date is the maximum production lead time period) are slid one day at a time within a certain past period (for example, the past year). , Calculate the shipping amount for each period. Then, the maximum value (period maximum shipment amount) among the calculated values is found.
【００１１】平均出荷量計算部は、過去の出荷データに
基づき、過去の一定期間（例えば、過去１年間）におけ
るトータルの出荷総量と、稼働日数とから、一日あたり
の平均出荷量を計算する。The average shipment amount calculation unit calculates an average shipment amount per day from the total shipment amount in a past fixed period (for example, the past one year) and the number of operating days based on past shipment data. .
【００１２】安全在庫量計算部は、最大期間設定部で設
定された最大生産リードタイム期間と、最大出荷量計算
部で計算された期間最大出荷量と、平均出荷量計算部で
計算された平均出荷量とに基づき、（安全在庫量＝期間
最大出荷量−平均出荷量×最大生産リードタイム期間）
の計算式によって安全在庫量を計算する。このような計
算式を用いることにより、平均の出荷量に対して、過去
１年間にさかのぼった最大の需要（販売量）が発生して
も、在庫がゼロにならないように安全在庫量を計算する
ことができる。[0012] The safety stock amount calculation unit includes a maximum production lead time period set by the maximum period setting unit, a maximum shipment amount during the period calculated by the maximum shipment amount calculation unit, and an average calculated by the average shipment amount calculation unit. Based on the shipment quantity, (safety stock quantity = maximum shipment quantity for the period-average shipment quantity x maximum production lead time period)
Calculate the safety stock amount by the formula. By using such a calculation formula, the safety stock amount is calculated so that the stock does not become zero even if the maximum demand (sales amount) dating back to the past year has occurred with respect to the average shipment amount. be able to.
【００１３】[0013]
【発明の実施の形態】以下、本発明の実施の形態につい
て、図面を参照して説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１４】図１は、本発明の安全在庫量計算装置のシ
ステム構成を示すブロック図である。FIG. 1 is a block diagram showing the system configuration of the safety stock amount calculation device of the present invention.
【００１５】本発明の安全在庫量計算装置は、大別する
と、最大期間設定部１、最大出荷量計算部２、平均出荷
量計算部３、及び安全在庫量計算部４によって構成され
ている。The safety stock amount calculation device of the present invention is roughly composed of a maximum period setting unit 1, a maximum shipment amount calculation unit 2, an average shipment amount calculation unit 3, and a safety stock amount calculation unit 4.
【００１６】最大期間設定部１は、生産計画を立てる周
期（生産サイクル）に基づいて、基準在庫量を切ってか
ら生産納入されるまでの生産リードタイム期間の最大値
を最大生産リードタイム期間として設定する。The maximum period setting section 1 sets the maximum value of the production lead time period from the time when the reference stock amount is cut to the time when production is delivered to the maximum production lead time period based on a cycle (production cycle) for making a production plan. Set.
【００１７】最大出荷量計算部２は、最大生産リードタ
イム期間中の出荷量の合計を、過去の出荷データに基づ
き、過去の一定期間にさかのぼって計算し、その計算値
の中の最大値を期間最大出荷量として設定する。The maximum shipment amount calculation unit 2 calculates the total of the shipment amount during the maximum production lead time period, based on the past shipment data, in a certain period in the past, and calculates the maximum value in the calculated value. Set as the maximum shipment amount during the period.
【００１８】平均出荷量計算部３は、過去の出荷データ
に基づき、同じ過去の一定期間における一日の平均出荷
量を計算する。The average shipment volume calculation unit 3 calculates the average daily shipment volume for the same past fixed period based on past shipment data.
【００１９】安全在庫量計算部４は、最大期間設定部１
で設定された最大生産リードタイム期間と、最大出荷量
計算部２で計算された期間最大出荷量と、平均出荷量計
算部３で計算された平均出荷量とに基づき、 安全在庫量＝期間最大出荷量−平均出荷量×最大生産リ
ードタイム期間 の計算式によって安全在庫量を計算する。The safety stock amount calculation unit 4 includes a maximum period setting unit 1
Based on the maximum production lead time period set in the above, the maximum shipment volume calculated by the maximum shipment volume calculation unit 2, and the average shipment volume calculated by the average shipment volume calculation unit 3, the safety stock amount = the maximum period Calculate the amount of safety stock by the formula of shipment volume-average shipment volume x maximum production lead time period.
【００２０】次に、上記構成の安全在庫量計算装置を用
いて実際に安全在庫量を計算する実施例について説明す
る。Next, a description will be given of an embodiment in which the safety stock amount is actually calculated by using the safety stock amount calculation device having the above-described configuration.
【００２１】ここでは、具体的事例として、生産計画を
立てる周期（生産サイクル）を週２回（毎週、月曜日と
木曜日）とし、計画日の翌日から生産される。また、過
去の一定期間を１年間とした場合について説明する。Here, as a specific example, a cycle (production cycle) for making a production plan is set to twice a week (every Monday, Monday and Thursday), and production is started from the next day of the planned date. Also, a case where the past fixed period is one year will be described.
【００２２】生産サイクルが週２回とすると、生産サイ
クルと生産リードタイムとの関係は、図２に示すように
なる。If the production cycle is twice a week, the relationship between the production cycle and the production lead time is as shown in FIG.
【００２３】つまり、第１計画日である月曜日の生産計
画後に、その月曜日から次の第２計画日の前の日である
水曜日までに発注点切れを起こした製品は、その第２計
画日である木曜日に生産計画が立てられ、その製品は、
翌日の金曜日から翌週の月曜日（第３計画日）のいずれ
かの日に生産されることになる。そのため、最大期間設
定部１は、これらを考慮して、発注点切れから実際に製
品が生産されるまでに最も長い時間がかかる場合を、最
大生産リードタイム期間として設定する。つまり、第１
計画日である月曜日に発注点切れを起こし、その製品が
第３計画日の月曜日に生産される場合が最も時間がかか
るので、この７日間を最大生産リードタイム期間として
設定する。なお、上記の発注点とは、製品ごとに設定さ
れている在庫管理の基準値のことであり、在庫がこの基
準値（発注点）以下になったタイミングで発注する（生
産計画を立てる）ことになる。In other words, after the production plan on Monday, which is the first planned date, products whose order has been discontinued from Monday to Wednesday, the day before the next second planned date, will be sold on the second planned date. One Thursday, a production plan was set up,
It will be produced on any day from the following Friday to the following Monday (third planned day). Therefore, taking these factors into account, the maximum period setting unit 1 sets the case where the longest time is required from the end of ordering to the actual production of the product as the maximum production lead time period. That is, the first
Since it takes the longest when the order is out on Monday, which is the planned date, and the product is produced on Monday, the third planned date, these seven days are set as the maximum production lead time period. The above-mentioned ordering point is a reference value for inventory management set for each product, and an order must be placed when a stock falls below this reference value (ordering point) (a production plan is made). become.
【００２４】最大出荷量計算部２は、最大期間設定部１
で設定された最大生産リードタイム期間（７日間）を一
つの期間（計算単位）として、その期間内の出荷量を、
過去の出荷データに基づき、過去１年間にさかのぼって
計算する。つまり、図３に示すように、その計算の開始
日と終了日（開始日と終了日との間隔は、最大生産リー
ドタイム期間である７日間となっている）を、過去１年
間の範囲内で一日ずつスライドさせて、それぞれの期間
の出荷量を計算する。図３に示す例では、６月１日から
６月７日までの期間出荷量（その期間の出荷総量）が２
２０、これらか一日ずらせた６月２日から６月８日まで
の期間出荷量（その期間の出荷総量）が２９０、・・
・、６月９日から６月１５日までの期間出荷量（その期
間の出荷総量）が２９０、となっている。図３に示す例
では、６月の半月分のみ例示しているが、実際には、こ
のような計算を過去１年間にわたって計算することにな
る。そして、過去１年間にわたって計算した各期間の出
荷総量の中から、最大のもの（図３に示す例では、６月
８日から６月１４日までの出荷総量である３５０）を、
期間最大出荷量として設定する。The maximum shipment amount calculation unit 2 includes a maximum period setting unit 1
With the maximum production lead time period (7 days) set in (1) as one period (unit of calculation),
Based on the past shipment data, the calculation is performed for the past one year. That is, as shown in FIG. 3, the start date and the end date of the calculation (the interval between the start date and the end date is 7 days which is the maximum production lead time period) within the range of the past one year. , Slide one day at a time and calculate the shipment volume for each period. In the example shown in FIG. 3, the shipping amount during the period from June 1 to June 7 (the total shipping amount during that period) is 2
20, the amount of shipment during the period from June 2 to June 8 (the total amount of shipment during that period), which is shifted one day, is 290.
290, the shipping amount during the period from June 9 to June 15 (total shipping amount during the period) is 290. In the example shown in FIG. 3, only half a month in June is illustrated, but such a calculation is actually performed over the past year. Then, from the total shipment amount in each period calculated over the past year, the largest one (in the example shown in FIG. 3, the total shipment amount from June 8 to June 14, 350) is
Set as the maximum shipment amount during the period.
【００２５】平均出荷量計算部３は、同じ過去１年間に
おけるトータルの出荷総量と、稼働日数とから、一日あ
たりの平均出荷量を計算する。例えば、トータルの出荷
総量を６２５０、稼働日数を２５０日とすると、平均出
荷量は、 平均出荷量＝（トータルの出荷総量）／（稼働日数）＝
６２５０／２５０＝２５ となる。よって、平均出荷量は２５となる。The average shipment volume calculation unit 3 calculates the average shipment volume per day from the total total shipment volume in the same past year and the number of operating days. For example, if the total shipping amount is 6250 and the number of operating days is 250 days, the average shipping amount is: average shipping amount = (total shipping amount) / (operating days) =
6250/250 = 25. Therefore, the average shipment amount is 25.
【００２６】安全在庫量計算部４は、最大期間設定部１
で設定された最大生産リードタイム期間（７日間）と、
最大出荷量計算部２で計算された期間最大出荷量（３５
０）と、平均出荷量計算部３で計算された平均出荷量
（２５）とに基づき、下式によって安全在庫量を計算す
る。The safety stock amount calculation unit 4 includes a maximum period setting unit 1
The maximum production lead time period (7 days) set in
The maximum shipment amount during the period calculated by the maximum shipment amount calculation unit 2 (35
0) and the average shipment quantity (25) calculated by the average shipment quantity calculation unit 3, the safety stock quantity is calculated by the following equation.
【００２７】安全在庫量＝期間最大出荷量−平均出荷量
×最大生産リードタイム期間＝３５０−２５×７（日）
＝１７５ つまり、安全在庫量は１７５となる。Safety stock quantity = Maximum shipment quantity during the period−Average shipment quantity × Maximum production lead time period = 350−25 × 7 (days)
= 175 That is, the safety stock amount is 175.
【００２８】このような計算式を用いることにより、平
均の出荷量に対して、過去１年間にさかのぼった最大の
需要（販売量）が発生しても、在庫がゼロにならないよ
うに安全在庫量を計算することができる。By using such a formula, even if the maximum demand (sales volume) from the past one year occurs with respect to the average shipment volume, the safety stock volume does not become zero so that the inventory does not become zero. Can be calculated.
【００２９】[0029]
【発明の効果】本発明の安全在庫量計算装置は、生産計
画を立てる周期に基づき、基準在庫量を切ってから生産
納入されるまでの生産リードタイム期間の最大値を最大
生産リードタイム期間として設定する最大期間設定部
と、この最大期間設定部で設定された最大生産リードタ
イム期間中の出荷量の合計を、過去の出荷データに基づ
き、過去の一定期間にさかのぼって計算し、その計算値
の中の最大値を期間最大出荷量として設定する最大出荷
量計算部と、過去の出荷データに基づき、同じ過去の一
定期間における一日の平均出荷量を計算する平均出荷量
計算部と、最大生産リードタイム期間、期間最大出荷
量、及び平均出荷量に基づいて製品別の安全在庫量を計
算する安全在庫量計算部とを備えた構成としている。つ
まり、見込み生産で在庫管理をする場合に、過去の実績
を加味することにより、需要変動が大きい製品について
も、在庫切れを起こさないように適正な安全在庫量を計
算することができる。According to the safety stock quantity calculating device of the present invention, the maximum value of the production lead time period from the time when the reference stock amount is cut to the time when the production is delivered is set as the maximum production lead time period based on the cycle of making the production plan. The maximum period setting part to be set and the total of the shipment volume during the maximum production lead time period set by this maximum period setting part are calculated based on the past shipment data for a certain period in the past, and the calculated value is calculated. A maximum shipment amount calculation unit that sets the maximum value in the period as the maximum shipment amount, an average shipment amount calculation unit that calculates the average daily shipment amount in the same past fixed period based on past shipment data, A safety stock amount calculator for calculating a safety stock amount for each product based on a production lead time period, a maximum shipment amount during the period, and an average shipment amount is provided. In other words, when inventory management is performed in prospective production, by taking into account past performance, it is possible to calculate an appropriate amount of safety stock so that even products with large fluctuations in demand do not run out of stock.
【図１】本発明の安全在庫量計算装置のシステム構成を
示すブロック図である。FIG. 1 is a block diagram showing a system configuration of a safety stock amount calculation device according to the present invention.
【図２】生産サイクルを週２回とした場合の、生産サイ
クルと生産リードタイムとの関係を示す説明図である。FIG. 2 is an explanatory diagram showing a relationship between a production cycle and a production lead time when the production cycle is set to twice a week.
【図３】最大生産リードタイム期間の計算方法を示した
説明図である。FIG. 3 is an explanatory diagram showing a method of calculating a maximum production lead time period.
１ 最大期間設定部 ２ 最大出荷量計算部 ３ 平均出荷量計算部 ４ 安全在庫量計算部 1 Maximum period setting section 2 Maximum shipment quantity calculation section 3 Average shipment quantity calculation section 4 Safety stock quantity calculation section
Claims (2)
安全在庫量を計算する装置であって、 生産計画を立てる周期に基づき、基準在庫量を切ってか
ら生産納入されるまでの生産リードタイム期間の最大値
を最大生産リードタイム期間として設定する最大期間設
定部と、 この最大期間設定部で設定された最大生産リードタイム
期間中の出荷量の合計を、過去の出荷データに基づき、
過去の一定期間にさかのぼって計算し、その計算値の中
の最大値を期間最大出荷量として設定する最大出荷量計
算部と、 過去の出荷データに基づき、同じ過去の一定期間におけ
る一日の平均出荷量を計算する平均出荷量計算部と、 前記最大生産リードタイム期間、期間最大出荷量、及び
平均出荷量に基づいて製品別の安全在庫量を計算する安
全在庫量計算部とを備えたことを特徴とする安全在庫量
計算装置。1. A device for calculating a safety stock amount when managing a stock amount of a prospective product, wherein a production lead from a time when a reference stock amount is cut to a time when a production is delivered is based on a cycle for making a production plan. A maximum period setting unit that sets the maximum value of the time period as the maximum production lead time period, and a total of the shipment amount during the maximum production lead time period set by the maximum period setting unit, based on the past shipment data,
A maximum shipment volume calculation unit that calculates a certain period of time in the past and sets the maximum value of the calculated values as the maximum shipment volume for the period, and an average of the day in the same past certain period based on past shipment data An average shipment quantity calculation unit for calculating the shipment quantity; and a safety stock quantity calculation unit for calculating a safety stock quantity for each product based on the maximum production lead time period, the maximum shipment quantity during the period, and the average shipment quantity. A safety stock amount calculation device characterized by the above-mentioned.
ードタイム期間 によって安全在庫量を計算する請求項１に記載の安全在
庫量計算装置。2. The safety stock amount according to claim 1, wherein the safety stock amount calculation unit calculates the safety stock amount by the following formula: safety stock amount = period maximum shipment amount−average shipment amount × maximum production lead time period. Computing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34426498A JP2000172768A (en) | 1998-12-03 | 1998-12-03 | Safety stock volume calculating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34426498A JP2000172768A (en) | 1998-12-03 | 1998-12-03 | Safety stock volume calculating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000172768A true JP2000172768A (en) | 2000-06-23 |
Family
ID=18367902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34426498A Pending JP2000172768A (en) | 1998-12-03 | 1998-12-03 | Safety stock volume calculating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000172768A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003160228A (en) * | 2001-11-26 | 2003-06-03 | Mitsubishi Electric Corp | Product stock monitoring system |
| WO2004033349A1 (en) * | 2002-10-11 | 2004-04-22 | Tdk Corporation | Inventory management method, inventory management system, and inventory management program |
| JP2010224992A (en) * | 2009-03-24 | 2010-10-07 | Haruya Inc | Bulletin ordering support system |
| JP2011180676A (en) * | 2010-02-26 | 2011-09-15 | Hitachi East Japan Solutions Ltd | Stock management device |
| JP2018020885A (en) * | 2016-08-03 | 2018-02-08 | 富士通株式会社 | Transportation/delivery planning program, transportation/delivery planning method and transportation/delivery planning device |
| JP2019164398A (en) * | 2018-03-19 | 2019-09-26 | 三菱電機インフォメーションシステムズ株式会社 | Inventory control system and program |
| KR20230006318A (en) | 2021-07-02 | 2023-01-10 | 주식회사 케이티 | Apparatus, method and computer program for executing scheduling of production of product |
| CN115689452A (en) * | 2022-11-14 | 2023-02-03 | 深圳市金洲精工科技股份有限公司 | Drill bit inventory plan management method |
| JP7596176B2 (en) | 2021-02-25 | 2024-12-09 | 株式会社インテック | Safety stock calculation system |
-
1998
- 1998-12-03 JP JP34426498A patent/JP2000172768A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003160228A (en) * | 2001-11-26 | 2003-06-03 | Mitsubishi Electric Corp | Product stock monitoring system |
| WO2004033349A1 (en) * | 2002-10-11 | 2004-04-22 | Tdk Corporation | Inventory management method, inventory management system, and inventory management program |
| JP2004131252A (en) * | 2002-10-11 | 2004-04-30 | Tdk Corp | Stock control method, stock control system, and stock control program |
| US7603297B2 (en) | 2002-10-11 | 2009-10-13 | Tdk Corporation | Inventory management method, system and program |
| JP2010224992A (en) * | 2009-03-24 | 2010-10-07 | Haruya Inc | Bulletin ordering support system |
| JP2011180676A (en) * | 2010-02-26 | 2011-09-15 | Hitachi East Japan Solutions Ltd | Stock management device |
| JP2018020885A (en) * | 2016-08-03 | 2018-02-08 | 富士通株式会社 | Transportation/delivery planning program, transportation/delivery planning method and transportation/delivery planning device |
| JP2019164398A (en) * | 2018-03-19 | 2019-09-26 | 三菱電機インフォメーションシステムズ株式会社 | Inventory control system and program |
| JP7596176B2 (en) | 2021-02-25 | 2024-12-09 | 株式会社インテック | Safety stock calculation system |
| KR20230006318A (en) | 2021-07-02 | 2023-01-10 | 주식회사 케이티 | Apparatus, method and computer program for executing scheduling of production of product |
| CN115689452A (en) * | 2022-11-14 | 2023-02-03 | 深圳市金洲精工科技股份有限公司 | Drill bit inventory plan management method |
| CN115689452B (en) * | 2022-11-14 | 2023-06-20 | 深圳市金洲精工科技股份有限公司 | Drill stock planning management method |
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