Inventory management device, inventory management system, inventory management method and program

Abstract

To perform appropriate inventory management by obtaining an easy and appropriate order quantity.SOLUTION: An inventory management device includes: information acquisition means for acquiring achievement information including information on a received quantity, delivered quantity, and stocked quantity of components; component required quantity calculation means for obtaining the delivered quantity in a plurality of periods before a predetermined time point in the future based on the delivered quantity of components based on sales schedules of products including components and the delivered quantity of components determined by the achievement information; and component order quantity calculation means for calculating an average value of the delivered quantities of components in the plurality of periods calculated by the component required number calculation means, as an order quantity of the components that is a received quantity of components in the plurality of periods.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present disclosure relates to an inventory management device, an inventory management system, an inventory management method, and a program. [Background technology]

[0002] Inventory management devices that aim to optimize the inventory levels of target items are known. For example, Patent Document 1 discloses a technology for adjusting inventory levels with the aim of optimizing inventory levels. In this document, a preset upper and lower limit of the optimal inventory level is compared with a predicted future inventory level, and an inventory-in / out plan is created to avoid inventory surpluses and shortages due to fluctuations in the predicted inventory level, and inventory-in / out numerical values ​​are calculated. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2000-90171 Summary of the Invention [Problem to be solved by the invention]

[0004] In order to manage the inventory quantity of a target item using the technology described in Patent Document 1, it is necessary to set and standardize the upper and lower limits of the appropriate inventory quantity in advance.

[0005] It is not easy to set upper and lower limits for the optimum inventory quantity in advance. This is especially true for general-purpose parts that are commonly used in a variety of products, as they are often stocked in quantities greater than the actual required amount. For this reason, more appropriate inventory management is required.

[0006] The present disclosure has been made in consideration of the above-mentioned problems, and aims to enable easy and appropriate inventory management. [Means for solving the problem]

[0007] In order to achieve the above object, the inventory management device according to the present disclosure includes a performance information acquisition means, a parts required quantity calculation means, and a parts ordering quantity calculation means. The performance information acquisition means acquires performance information including information on the number of parts received, the number of parts dispatched, and the number of parts in stock. and performance information for each predetermined period. The required number of parts calculation means obtains Setting a delivery schedule for the number of parts corresponding to the products to be sold during a plurality of predetermined periods from a point in time prior to the delivery time of the products by a period determined based on the procurement lead time, the manufacturing lead time, and the transportation lead time until the delivery time; and Number of parts shipped out identified by performance information By generating a new schedule and adding the number of parts to be shipped to the new schedule, Multiple predetermined The part ordering quantity calculation means calculates the number of parts to be delivered during the period. predetermined The average number of shipments over a period is calculated by multiplying predetermined The number of parts ordered is the number of parts received during the period. [Effects of the Invention]

[0008] According to the present disclosure, the number of items to be ordered is determined by calculating the number of items to be shipped based on the future sales plan of the product and averaging these. Therefore, it is possible to easily determine the appropriate number of items to be ordered and perform appropriate inventory management. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a diagram showing a configuration of an inventory management system according to a first embodiment. [Figure 2] A diagram showing the relationship between the inventory of parts at each stage of the manufacturing base, the sales base, and the customer in chronological order. [Figure 3] FIG. 1 is a diagram showing an example of a functional configuration of an inventory management device according to a first embodiment; [Figure 4] FIG. 10 is a diagram showing an example of a performance table stored in a storage unit of the inventory management device according to the first embodiment. [Figure 5] FIG. 10 is a diagram showing an example of a product master table stored in a storage unit of the inventory management device according to the first embodiment. [Figure 6] FIG. 10 is a diagram showing an example of a parts master table stored in a storage unit of the inventory management device according to the first embodiment. [Figure 7] FIG. 10 is a diagram showing an example of a transportation lead time master table stored in a storage unit of the inventory management device according to the first embodiment. [Figure 8]FIG. 10 is a diagram showing an example of calculated data stored in a storage unit of the inventory management device according to the first embodiment. [Figure 9] FIG. 10 is a diagram showing an example of conversion value data stored in a storage unit of the inventory management device according to the first embodiment. [Figure 10] FIG. 10 is a diagram showing an example of recommended value data stored in a storage unit of the inventory management device according to the first embodiment. [Figure 11] FIG. 10 is a diagram showing an example of order data stored in a storage unit of the inventory management device according to the first embodiment. [Figure 12] FIG. 1 is a diagram illustrating an example of a hardware configuration of an inventory management device according to a first embodiment. [Figure 13] 1 is a flowchart showing a recommended value information output process according to the first embodiment. [Figure 14] FIG. 10 is a diagram showing the configuration of an inventory management system according to a second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] An inventory management device, an inventory management system, an inventory management method, and a program according to the present embodiment will be described in detail below with reference to the drawings. Note that the same or corresponding parts in the drawings are designated by the same reference numerals.

[0011] (Embodiment 1) The configuration of a stock management system 100 according to the first embodiment will be described with reference to FIG. The inventory management system 100 is a system that calculates and presents recommended values ​​for inventory management based on actual information such as the number of parts received and sent out and future confirmed shipping schedules, and is equipped with an inventory management device 10 that calculates the recommended values, a storage device 30 that stores various information for inventory management, and a user terminal 40 used by the user.

[0012] The storage device 30 is configured by a server device, and includes a performance information storage unit 301 and an order information storage unit 302 . The performance information storage unit 301 stores performance information for each manufacturing base. The performance information includes time-series information indicating the number of performances related to parts arrangements, the number of performances related to parts requirements, and the number of performances related to product requirements at each manufacturing base. Here, parts arrangement corresponds to placing an order with a supplier, requesting an order from an internal procurement department, etc., and means obtaining parts. Part requirements mean using those parts to manufacture a product. Product requirements mean supplying or providing products to a sales base for sale, display, etc. Each piece of performance information includes the number of incoming items P, the number of outgoing items S, and the number of items in stock I. The significance of the number of incoming items P, the number of outgoing items S, and the number of items in stock I will be described later.

[0013] In the present disclosure, a part may include a material or a substance. Also, a number indicates a number or a quantity. The unit of the quantity may be, for example, weight, volume, or the like.

[0014] The order information storage unit 302 stores order information for products at each manufacturing base. As shown in Fig. 11, the order information includes the order number, the sales base, the ordered product and its quantity, the delivery date, and the identification information of the manufacturing base that manufactures the product.

[0015] The storage device 30 is connected to an in-house network NW, and the information is updated in accordance with the progress of business in multiple departments within the company. The storage device 30 may be configured as a single device or may be configured as multiple storage areas distributed in a distributed manner.

[0016] The inventory management device 10 is configured as a computer device. In response to instructions from a user terminal 40, the inventory management device 10 processes performance information and order information stored in the storage device 30, and calculates and presents recommended values ​​for inventory management of parts at each manufacturing base, such as the recommended order quantity and stock quantity of each part.

[0017] The user terminal 40 is configured as a terminal device. The user terminal 40 is connected to the inventory management device 10 via the in-house network NW, and issues instructions to the inventory management device 10 to obtain a recommended value for the appropriate stock quantity of each general-purpose part.

[0018] Next, using Figure 2, we will explain in chronological order the relationship between the inventory of parts and products that occurs at each stage between the manufacturing base of the product that is the subject of this embodiment, the sales base of the product, and the customer who is the purchaser of the product.

[0019] FIG. 2 shows the relationship between the stock and delivery of the general-purpose part M1 at each stage between the manufacturing base A, the sales base K, and the customer C. 2, P means the number of items received, S means the number of items shipped, and I means the number of items in stock. A manufacturing base A is, for example, a factory, K means, for example, a retail store, and C means, for example, a final purchaser.

[0020] At the manufacturing base, each part is managed at the parts procurement stage, parts requirement stage, and product requirement stage. The parts procurement stage is the stage where parts are procured from suppliers and obtained. The parts requirement stage is the stage where parts are actually required for the production of a product and are used in production. The product requirement stage is the stage where products incorporating parts are provided to sales bases.

[0021] The time from when a manufacturing base receives a formal product order from a sales base to when it obtains the parts needed to manufacture that product is called the "procurement lead time." The time between when parts are needed to manufacture a product and when the product is needed, and when production is completed, is called the "manufacturing lead time." Furthermore, the time required to transport parts from the manufacturing base to the sales base and the time required to transport parts from the sales base to the customer are called the "transportation lead time." Here, we will assume that each of these lead times is "1."

[0022] On the timeline shown in Figure 2, assume that manufacturing base A orders n units of part M1 at time N. In this case, the order quantity n is set to the inventory quantity P at the part procurement stage at time N, and the inventory quantity I is incremented by +n.

[0023] Next, at time (N+1), when the period "1" corresponding to the procurement lead time has elapsed, n units of parts M1 are delivered to manufacturing site A. As a result, the inventory quantity I at the parts procurement stage at time (N+1) is increased by +n.

[0024] The n parts M1 delivered at time (N+1) are allocated to the inventory quantity P of parts M1 at the product requirement stage at time (N+2) after the period "1" corresponding to the manufacturing lead time has elapsed. With this allocation, the inventory quantity I at the part requirement stage becomes -n, and the inventory quantity I at the product requirement stage becomes +n.

[0025] Part M1 delivered to manufacturing base A at time N is used to manufacture product PD1 at time (N+1). Therefore, the outgoing quantity S at time (N+1) is allocated to the incoming quantity P at the product required stage at time (N+2). Therefore, the inventory quantity I at the part required stage at time (N+1) is decremented by n, and the inventory quantity I at the product required stage at time (N+2) is decremented by n.

[0026] Furthermore, at time (N+2), product PD1 containing part M1 is shipped from manufacturing site A. Therefore, the number of outgoing parts S for part M1 at the product requirement stage becomes the number corresponding to the number of outgoing parts S for product PD1, and they are delivered to sales site K at time (N+3) and allocated to the number of incoming parts P. The inventory quantity I is also updated. Assuming that the number of outgoing products PD1 is n1 and that one product uses n2 parts M1, the number of outgoing parts S from manufacturing site A becomes n1·n2. Therefore, the number of outgoing parts S = n1·n2 at time (N+2) of the product requirement stage from manufacturing site A is allocated to the number of incoming parts P at time (N+3) of sales site K. Therefore, the inventory quantity I at time (N+2) of the product requirement stage becomes -n1·n2, and the inventory quantity I at time (N+3) of sales site K becomes +n1·n2.

[0027] Furthermore, when a product PD1 including part M1 is sold to customer C at sales base K at time (N+3), the quantity included in the sold product PD1 becomes the outgoing quantity S of part M1, and is allocated to customer C's incoming quantity P at time (N+4).

[0028] In this way, the outgoing quantity S of part M1 arranged at manufacturing base A at time N is determined by the incoming quantity P of manufacturing base A, sales base K, and customer C, which is determined by the time series N + "procurement lead time" + "manufacturing lead time" + "transportation lead time," taking into consideration the "procurement lead time" and "manufacturing lead time" to the next stage at manufacturing base A, and the "transportation lead time" from manufacturing base A to sales base K and from sales base K to customer C.

[0029] From these facts, once the number of products P received at a sales base at a certain point in the future on the timeline is determined, the number of parts S that will be shipped out of stock at the stage prior to that point in the future - ("procurement lead time" + "manufacturing lead time" + "transportation lead time") is determined for the parts that make up that product, taking into account the procurement lead time, manufacturing lead time, and transportation lead time. Therefore, it is necessary to arrange for parts to ensure this shipping quantity S. The method of determining the number of parts to be ordered in this disclosure is based on this principle.

[0030] General-purpose parts are parts that are commonly used in various products, and although their number may vary over time, they are parts that are continuously necessary for production activities. General-purpose parts can be any parts, such as screws, resistors, capacitors, adhesives, etc.

[0031] Next, the functional configuration of the inventory management device 10 will be described with reference to FIG. 3, inventory management device 10 includes information acquisition unit 11 for acquiring information, required parts quantity calculation unit 12 for calculating the required number of parts, parts order quantity calculation unit 13 for calculating the number of parts to be ordered, inventory quantity calculation unit 14 for calculating the inventory quantity, required parts price conversion unit 15 for converting the required parts quantity to a required parts price, parts order price conversion unit 16 for converting the parts order quantity to a parts order price, inventory price conversion unit 17 for converting the inventory quantity to an inventory price, recommended price calculation unit 18 for calculating a recommended price, recommended order quantity calculation unit 19 for calculating a recommended order quantity, recommended inventory quantity calculation unit 20 for calculating a recommended inventory quantity, recommended value information output unit 21 for transmitting recommended value information to user terminal 40, and storage unit 26 for storing information required to calculate the inventory quantity and the recommended values ​​of the parts order quantity. In this embodiment, the number of parts actually required to manufacture a product is defined as the "required number of parts."

[0032] The memory unit 26 saves a performance table 261 storing performance information at each manufacturing base, a product master table 262 storing manufacturing lead times, component parts, etc., a parts master table 263 storing procurement lead times, purchase unit prices, etc., a transportation lead time master table 264 storing transportation lead times between manufacturing bases and sales bases, calculation data 265 storing calculated values ​​calculated by the parts order quantity calculation unit 13, inventory quantity calculation unit 14, etc., converted value data 266 storing converted values ​​converted by the parts order amount conversion unit 16, inventory amount conversion unit 17, etc., recommended value data 267 storing recommended values ​​calculated by the recommended order quantity calculation unit 19, recommended inventory quantity calculation unit 20, etc., monthly sales ratio data 268 storing monthly sales ratios, and order data 269 storing order information.

[0033] The actual result table 261 is a table that associates, for each general-use part, the manufacturing base, the manufacturing stage at that manufacturing base, and the actual numbers of incoming quantity P, outgoing quantity S, and inventory quantity I at each past point in time. Fig. 4 shows an example of the actual result table 261. The actual result table 261 shown in Fig. 4 is a table that shows, for general-use parts M1, M2, M3..., manufacturing bases A, B..., manufacturing stages, and the actual numbers of incoming quantity P, outgoing quantity S, and inventory quantity I at past points in time (N-3), (N-2), and (N-1), where N is the current point in time. As with Fig. 2, there are three manufacturing stages: parts arrangement stage, parts requirement stage, and product requirement stage.

[0034] The product master table 262 shown in FIG. 3 is a table that associates product identification information, sales price, manufacturing base, manufacturing lead time for each manufacturing base, and component parts and their quantities, as exemplified in FIG. 5. The component parts may only be general-purpose parts. The manufacturing base is identification information for the manufacturing base that manufactures the product. The sales price is the unit sales price of the product. The manufacturing base is identification information for the base that manufactures the product. As described above, the manufacturing lead time is the time between the component required time when the component parts are actually required for manufacturing and the product required time when the manufacturing of the product is completed. Furthermore, the component parts is the identification information and quantity of the component parts used in manufacturing the product. In the example of FIG. 5, for example, the sales price of product PD1 is HA1, the manufacturing bases are A and B, and the manufacturing lead time of manufacturing base A is RA1. Furthermore, it is indicated that product PD1 uses four parts M1, three parts M3, etc.

[0035] The parts master table 263 shown in FIG. 3 is a table that associates identification information of various parts with "supplier," "unit purchase price," "manufacturing base," and "procurement lead time," as exemplified in FIG. 6. "Supplier" is identification information of the supplier that purchases the parts. "Unit purchase price" means the unit purchase price of the parts. "Manufacturing base" is identification information of the manufacturing base where the parts are used. "Procurement lead time" means the time between when the parts are arranged and when the parts are required.

[0036] The transportation lead time master table 264 shown in Fig. 3 indicates the correspondence between the identification information of the manufacturing base, the identification information of the sales base, and the transportation lead time between the manufacturing base and the sales base, as exemplified in Fig. 7. In the example of Fig. 7, the transportation lead time between "sales base K" and manufacturing base B is TBK.

[0037] Calculation data 265 shown in FIG. 3 is data indicating the past, present, and future incoming quantity P, outgoing quantity S, and inventory quantity I for each general-purpose part and each manufacturing stage at each manufacturing base, calculated by required parts quantity calculation unit 12, parts procurement quantity calculation unit 13, and inventory quantity calculation unit 14. Note that the past data is data based on actual results. Calculation data 265 shown in FIG. 8 is data indicating the incoming quantity P, outgoing quantity S, and inventory quantity I for each of parts M1, M2, ... at each manufacturing stage from time points (N-3) to (N+3), where N is the current time. The incoming quantity P, outgoing quantity S, and inventory quantity I at each manufacturing stage from time points (N-3) to (N-1) are data based on actual results. Since the data at time points (N-3) to (N-1) is the same as the data stored in actual results table 261, only data at time points N to (N+3) may be prepared as calculation data 265. Alternatively, only data at the parts procurement stage may be prepared.

[0038] The converted value data 266 shown in FIG. 3 is data indicating values ​​converted by the required parts price converter 15, the parts procurement price converter 16, and the inventory price converter 17, as shown in FIG. The recommended value data 267 shown in FIG. 3 is data indicating values ​​calculated by the recommended amount calculation unit 18, the recommended order quantity calculation unit 19, and the recommended inventory quantity calculation unit 20, as shown in FIG.

[0039] The monthly sales ratio data 268 is data that indicates information on the monthly sales ratio. The monthly sales ratio is a value that indicates what percentage of the parts inventory amount at time N accounts for the required parts amount at time (N+1), and what percentage of the parts inventory amount at time (N+1) accounts for the required parts amount at time (N+2). In other words, the monthly sales ratio is a value that indicates the proportion of the required parts amount at the next stage in the time series that will be held in stock at, for example, the end of the month. The monthly sales ratio is, for example, a predetermined value input by the user. The monthly sales ratio may be any predetermined value.

[0040] The order data 269 is information indicating the number of items to be stocked at a sales base in the future on a timeline. Information indicating the number of items to be stocked at a sales base in the future is confirmed plan information, for example, order information. As illustrated in FIG. 11, the order data 269 includes the order number, identification information of the sales base corresponding to the customer, identification information of the ordered product, delivery date, order quantity, manufacturing base that supplies the product, etc. As explained with reference to FIG. 2, the number of items to be stocked P at a sales base corresponds to the number of items to be shipped S from the manufacturing base. The delivery date is the date of stocking at the sales base and also the date and time when the product will actually become available for sale, and is an example of a planned sales date.

[0041] The information acquiring unit 11 shown in FIG. 3 acquires performance information and order information from the storage device 30. The acquisition is realized by sending a transmission instruction from the information acquiring unit 11 to the storage device 30. The information acquiring unit 11 adds the number of past performances at each production stage at the production base to the performance table 261 based on the acquired performance information. Furthermore, based on the acquired order information, the information acquiring unit 11 adds the identification information of the sales base, the identification information of the ordered product, the delivery date, the number of orders, etc. to the order data 269. The information acquiring unit 11 is an example of performance information acquiring means according to the present disclosure.

[0042] Based on order receipt data 269, required parts quantity calculation unit 12 calculates the number of outgoing parts S at each manufacturing base for each part, i.e., the required number of parts. Specifically, required parts quantity calculation unit 12 first generates and records data for times N to (N+3) in calculation data 265 based on past actual data for times (N-3) to (N-1) expanded in actual result table 261. Required parts quantity calculation unit 12 further calculates the number of outgoing parts S at each part procurement stage at each manufacturing base for each part based on order receipt data 269, and reflects this in calculation data 265 by adding it to the original data. More specifically, as described above, when the number of incoming parts P at a sales base at a certain time in the future on the chronological order is determined, the number of outgoing parts S at each manufacturing base at the part procurement stage at, for example, times N, (N+1), and (N+2) is calculated based on the procurement lead time, manufacturing lead time, and transportation lead time. The required part quantity calculation unit 12 is an example of the required part quantity calculation means according to the present disclosure.

[0043] The parts order quantity calculation unit 13 averages the required quantities at each time point in the parts arrangement stage calculated by the required parts quantity calculation unit 12 to calculate the final order quantity. More specifically, the parts order quantity calculation unit 13 sequentially adds up the required quantities of parts within any period after time N calculated by the required parts quantity calculation unit 12. The parts order quantity calculation unit 13 calculates the average required quantity by dividing the cumulative number of outgoing parts, which is the added value, by the number of additions. The parts order quantity calculation unit 13 sets the calculated average required quantity as the parts order quantity. The calculated parts order quantity is reflected in the form of being added to the data in the column for the inventory quantity P at the parts arrangement stage in the calculation data 265 in the memory unit 26. The parts order quantity calculation unit 13 is an example of a parts order quantity calculation means according to the present disclosure.

[0044] Inventory quantity calculation unit 14 calculates inventory quantity I based on the required number of parts calculated by required parts quantity calculation unit 12 and the number of parts to be ordered calculated by parts ordering quantity calculation unit 13. The calculated inventory quantity I is reflected in the form of being added to calculation data 265 in memory unit 26.

[0045] The required parts amount conversion unit 15 converts the number of outgoing parts S at the parts arrangement stage calculated by the required parts quantity calculation unit 12 into a required parts amount. The required parts amount conversion unit 15 calculates the required parts amount SD based on the number of outgoing parts S at the parts arrangement stage calculated by the required parts quantity calculation unit 12 and the purchase unit price registered in the parts master table 263 shown in FIG. 6. Specifically, the required parts amount conversion unit 15 multiplies the number of outgoing parts S at the parts arrangement stage by the purchase unit price. The value obtained by multiplication corresponds to the value obtained by converting the number of outgoing parts S at time N, (N+1), (N+2) and thereafter into the required parts amount SD. The required parts amount SD corresponding to the calculated multiplication value is stored in the conversion value data 266 of the storage unit 26 together with the identification information and time-series information of the manufacturing base, as shown in FIG. 9. The required parts amount conversion unit 15 is an example of the required parts amount conversion means according to the present disclosure.

[0046] The parts order amount conversion unit 16 converts the order quantity calculated by the parts order quantity calculation unit 13, i.e., the inventory quantity P at the parts order stage, into a parts order amount. The parts order amount conversion unit 16 calculates the parts order amount PD based on the parts order quantity at the parts order stage calculated by the parts order quantity calculation unit 13 and the purchase price in the parts master table 263 illustrated in FIG. 6. Specifically, the parts order amount conversion unit 16 multiplies the inventory quantity P at the parts order stage calculated by the parts order quantity calculation unit 13 by the purchase price. The value obtained by the multiplication corresponds to the value obtained by converting the inventory quantity P at the parts order stage at time N, (N+1), (N+2) and later into the parts order amount PD. The calculated parts order amount PD is stored in the conversion value data 266 of the storage unit 26 together with the identification information and time-series information of the manufacturing base, as illustrated in FIG. 9. The parts order amount conversion unit 16 is an example of a parts order amount conversion means according to the present disclosure.

[0047] The inventory value conversion unit 17 converts the inventory quantity I at the parts arrangement stage into an inventory value. The inventory value conversion unit 17 calculates an inventory value ID based on the inventory quantity I at the parts arrangement stage calculated by the inventory quantity calculation unit 14 and the purchase price in the parts master table 263 illustrated in FIG. 6. Specifically, the inventory value conversion unit 17 multiplies the inventory quantity I at the parts arrangement stage by the purchase price. The value obtained by the multiplication corresponds to the value obtained by converting the inventory quantity I at the parts arrangement stage at time N, (N+1), (N+2) and later into an inventory value ID. The inventory value ID corresponding to the calculated multiplied value is stored in the conversion value data 266 of the storage unit 26 together with the identification information and time-series information of the manufacturing base, as illustrated in FIG. 9. The inventory value conversion unit 17 is an example of an inventory value conversion means according to the present disclosure.

[0048] The recommended amount calculation unit 18 calculates a recommended inventory amount IDR indicating a recommended value for the inventory amount. The recommended amount calculation unit 18 calculates a recommended inventory amount at time N on the time series based on the required parts amount SD at time (N+1) on the time series and the monthly sales ratio information stored in the monthly sales ratio data 268. Specifically, the recommended amount calculation unit 18 calculates the recommended inventory amount IDR at time N by multiplying the required parts amount SD at time (N+1) by the monthly sales ratio. The calculated recommended inventory amount IDR is stored in the recommended value data 267 of the storage unit 26, as illustrated in FIG. 10. The recommended amount calculation unit 18 is an example of a recommended amount calculation means according to the present disclosure.

[0049] Furthermore, the recommended amount calculation unit 18 calculates a recommended parts procurement amount PDR indicating a recommended value for the parts procurement amount. The recommended amount calculation unit 18 calculates the recommended parts procurement amount PDR at the Nth time point on the time series by adding the recommended inventory amount IDR at the Nth time point on the time series and the required parts amount SD at the Nth time point on the time series. The calculated recommended parts procurement amount PDR is stored in the recommended value data 267 of the storage unit 26, as shown in FIG. 10.

[0050] The recommended order quantity calculation unit 19 calculates a recommended part order quantity value PR indicating a recommended value for the number of parts to be ordered. The recommended order quantity calculation unit 19 calculates the recommended part order quantity value PR at the Nth time point on the time series by dividing the recommended part order amount value PDR at the Nth time point on the time series by the purchase price in the parts master table 263. The calculated recommended part order quantity value PR is stored in the recommended value data 267 of the storage unit 26, as shown in FIG. 10. The recommended order quantity calculation unit 19 is an example of a recommended order quantity calculation means according to the present disclosure.

[0051] The recommended stock quantity calculation unit 20 calculates the recommended stock quantity value IR indicating the recommended value of the stock quantity I. The recommended stock quantity calculation unit 20 calculates the recommended stock quantity value IR at the Nth time point on the time series by dividing the recommended stock amount value IDR at the Nth time point on the time series by the purchase price in the parts master table. The calculated recommended stock quantity value IR is stored in the recommended value data 267 of the storage unit 26. The recommended stock quantity calculation unit 20 is an example of a recommended stock quantity calculation means according to the present disclosure.

[0052] The recommended value information output unit 21 transmits the recommended value information stored in the recommended value data 267 of the storage unit 26 to the user terminal 40. The user terminal 40 outputs the recommended value information received from the inventory management device 10 by screen display, audio output, etc. The recommended value information output unit 21 is an example of a recommended value information output means according to the present disclosure.

[0053] The hardware configuration of inventory management device 10 will be described with reference to Fig. 12. As shown in Fig. 12, inventory management device 10 includes temporary storage unit 101, storage unit 102, calculation unit 103, input unit 104, transmission / reception unit 105, and display unit 106. Temporary storage unit 101, storage unit 102, input unit 104, transmission / reception unit 105, and display unit 106 are all connected to calculation unit 103 via a BUS.

[0054] Calculation unit 103 is, for example, a CPU (Central Processing Unit). Calculation unit 103 executes the processes of required parts quantity calculation unit 12, parts arrangement quantity calculation unit 13, inventory quantity calculation unit 14, required parts cost conversion unit 15, parts arrangement cost conversion unit 16, inventory cost conversion unit 17, recommended cost calculation unit 18, recommended order quantity calculation unit 19, and recommended inventory quantity calculation unit 20 of inventory management device 10 in accordance with the control program stored in storage unit 102.

[0055] The temporary storage unit 101 is, for example, a RAM (Random-Access Memory). The temporary storage unit 101 loads the control program stored in the storage unit 102 and is used as a work area for the calculation unit 103.

[0056] The storage unit 102 is a non-volatile memory such as a flash memory, a hard disk, a DVD-RAM (Digital Versatile Disc - Random Access Memory), or a DVD-RW (Digital Versatile Disc - Rewritable). The storage unit 102 pre-stores a program for causing the calculation unit 103 to perform the processing of the inventory management device 10, and also supplies data stored by this program to the calculation unit 103 in accordance with instructions from the calculation unit 103, and stores the data supplied from the calculation unit 103. The storage unit 102 includes a storage unit 26 that stores a performance table 261, a product master table 262, etc.

[0057] The input unit 104 is an interface device that connects input devices such as a keyboard, a pointing device, and a voice input device to the BUS. Information input by the user is supplied to the calculation unit 103 via the input unit 104. In a configuration in which the user directly inputs performance information into the inventory management device 10, the input unit 104 functions as the information acquisition unit 11.

[0058] The transmitting / receiving unit 105 is a network termination device or a wireless communication device connected to the network, and a serial interface or a LAN (Local Area Network) interface connected to them. The transmitting / receiving unit 105 functions as the information acquiring unit 11 and the recommended value information output unit 21.

[0059] The display unit 106 is a display device such as an LCD (Liquid Crystal Display), an organic EL (Electroluminescence) display, etc. In a configuration in which the inventory management device 10 displays the recommended value information on a screen, the display unit 106 functions as the recommended value information output unit 21.

[0060] The processing of information acquisition unit 11, required parts quantity calculation unit 12, parts arrangement quantity calculation unit 13, inventory quantity calculation unit 14, required parts cost conversion unit 15, parts arrangement cost conversion unit 16, inventory cost conversion unit 17, recommended cost calculation unit 18, recommended order quantity calculation unit 19, recommended inventory quantity calculation unit 20, recommended value information output unit 21, and memory unit 26 of inventory management device 10 shown in Figure 3 is executed by a control program using temporary memory unit 101, calculation unit 103, memory unit 102, input unit 104, transmission / reception unit 105, display unit 106, etc. as resources.

[0061] Next, the recommended value information output process executed by the inventory management device 10 to present recommended values ​​for the number of parts in stock will be described with reference to the flowchart of FIG.

[0062] As a premise, the results of daily operations are registered in the results information storage unit 301 or the order information storage unit 302 by systems installed in various departments within the company. For example, information on the arrangement of each part, information on the receipt of each part, manufacturing information on each product, information on the order of each product, information on the shipment of each product, etc. are registered in the results information storage unit 302 or the order information storage unit 302 of the storage device 30 via the internal network NW.

[0063] When a stock management person wants to know the appropriate stock amount of a general-use part, he or she operates his or her own user terminal 40 to instruct stock management device 10 to start the recommended value information output process shown in FIG.

[0064] When the process starts, the information acquisition unit 11 accesses the storage device 30 and acquires performance information and new order information (step S11).

[0065] The information acquiring unit 11 loads the performance information acquired from the storage device 30 into the performance table 261 of the storage unit 26. More specifically, as illustrated in Fig. 4, the information acquiring unit 11 records the incoming quantity P, outgoing quantity S, and inventory quantity I at each production stage from time (N-1) to time (N-3) in the past in the performance table 261 by part, by production base, and by production stage. In addition, the information acquiring unit 11 registers the order information acquired from the storage device 30 in the order data 269.

[0066] Based on the performance data expanded in the performance table 261, the information acquisition unit 11 creates information on the number of incoming items P, the number of outgoing items S, and the number of items in stock I at each production stage from time N onwards, and expands it into the calculated data shown in Figure 8 (step S12).

[0067] The required parts quantity calculation unit 12 identifies one product to be sold based on the order data 269 (step S13). For example, based on FIG. 11, product PD1 with order number 011 is identified. This determines the number S of product PD1 to be shipped to sales base K on the delivery date of 2022 / 06 / 03, which indicates the delivery time.

[0068] The required parts quantity calculation unit 12 identifies a manufacturing base that provides the identified product based on the order data 269 (step S14). In the example of Fig. 11, manufacturing base A that provides product PD1 with order number 011 is identified.

[0069] The required parts quantity calculation unit 12 identifies one of the parts included in the identified product by referring to the product master table 262 illustrated in Fig. 5 (step S15). If the product is PD1, for example, part M1 is identified.

[0070] The required parts quantity calculation unit 12 determines the number of parts to be delivered S at the parts arrangement stage, taking into consideration the manufacturing lead time and procurement lead time for the identified parts at the identified manufacturing base (step S16).

[0071] In the example of order number 011 in Figure 11, the required quantity of product PD1 is 100. According to the product master table in Figure 5, the number of parts M1 included in one product PD1 is 4. Therefore, the required quantity of parts M1 is 100 x 4 = 400.

[0072] In addition, the manufacturing base is A and the manufacturing lead time is RA1. Since the sales base is K and the manufacturing base is A, the transportation lead time is identified as TAK from the transportation lead time master table 264 in FIG.

[0073] Therefore, if the period including the delivery date is F1, the number of items S shipped at the parts arrangement stage at manufacturing site A in period F2, which is before the period equivalent to (F1 - (transportation lead time TAK + manufacturing lead time RA1)), will be 400.

[0074] Next, it is determined whether there are other parts for the same product (step S17), and if there are (step S17, Yes), the process returns to step S15 and the same process is performed for the next part. In the example of order number 011 in Figure 11, parts M3... exist, so the same process is performed for M3...

[0075] When processing for all parts of one product is completed, the answer in step S17 is determined to be No, and in step S18 it is determined whether there are any other orders.

[0076] If there are other orders (step S18, Yes), the process returns to step S13 and the same process is performed. In the example of the order data shown in Figure 11, there is an order with order number 012, so the process returns to step S13. When processing for all new orders has been completed (step S18, No), the obtained number of outgoing orders S=required number at the part arrangement stage for each part and each manufacturing base is expanded into the calculation data 265 (step S19).

[0077] Next, parts procurement quantity calculation unit 13 calculates the number of parts to be procured for each part at each manufacturing base, i.e., the number of stocks P at the parts procurement stage (step S20). Specifically, parts procurement quantity calculation unit 13 sequentially adds up the number of deliveries S at the parts procurement stage over an m period from time N to a predetermined time (N+m-1) calculated by parts required quantity calculation unit 12, and divides the total number of deliveries ΣS obtained by the addition by the number of times m, to obtain ΣS / m as the number of deliveries P at the parts procurement stage from time N to (N+m-1), i.e., the number of deliveries. Here, m is a natural number. In other words, the number of parts to be procured corresponds to the average required quantity.

[0078] Next, the inventory quantity calculation unit 14 calculates the inventory quantity I from time N onward based on the required number of parts and the number of parts to be procured, and reflects the calculated inventory quantity I in the calculation data 265 (step S21).

[0079] The required parts cost conversion unit 15, the parts ordering cost conversion unit 16, and the inventory cost conversion unit 17 convert the required number of parts, the ordered number of parts, and the inventory number at the manufacturing base into the required parts cost, the ordered parts cost, and the inventory cost, respectively (step S22). First, the required part cost conversion unit 15 multiplies the required number of parts calculated by the required part quantity calculation unit 12 by the purchase price in the parts master table 263 to calculate the required part cost. The parts procurement amount conversion unit 16 multiplies the number of parts to be procured calculated by the parts procurement amount calculation unit 13 by the purchase price in the parts master table 263 to calculate the parts procurement amount. The stock amount conversion unit 17 multiplies the stock quantity I calculated by the stock quantity calculation unit 14 by the purchase price in the parts master table 263 to calculate the stock amount.

[0080] The recommended amount calculation unit 18, the recommended order quantity calculation unit 19, and the recommended stock quantity calculation unit 20 calculate the recommended amount, order quantity, and stock quantity, respectively (step S23). Specifically, the recommended amount calculation unit 18 calculates the recommended inventory amount IDR at time N, for example, by multiplying the required parts amount SD at time (N+1) by the monthly sales ratio stored in the monthly sales ratio data 268 of the storage unit 26. The recommended amount calculation unit 18 calculates the recommended parts procurement amount PDR at time N on the time series, for example, by adding the recommended inventory amount IDR at time N on the time series to the required parts amount SD at time N on the time series. The calculated recommended inventory amount IDR and recommended parts procurement amount PDR are stored in the recommended value data 267 of the storage unit 26.

[0081] The recommended order quantity calculation unit 19 calculates the recommended order quantity PR of parts at the Nth time point on the time series by dividing the recommended parts order amount PDR at the Nth time point on the time series by the purchase price in the parts master table 263. The calculated recommended order quantity PR of parts is stored in the recommended value data 267 in the storage unit 26.

[0082] The recommended stock quantity calculation unit 20 calculates the recommended stock quantity IR at the Nth time point on the time series by dividing the recommended stock amount IDR at the Nth time point on the time series by the purchase price in the parts master table. The calculated recommended stock quantity IR is stored in the recommended value data 267 in the storage unit 26.

[0083] The recommended value information output unit 21 transmits the recommended value information stored in the recommended value data 267 to the user terminal 40 (step S24), and the process then ends.

[0084] The user terminal 40 outputs the received recommended value information by displaying it on a screen, outputting it as sound, or the like.

[0085] As described above, inventory management system 100 according to the embodiment calculates the order quantity by calculating the number of items to be shipped based on the future sales schedule of the product and averaging these. Furthermore, recommended amount calculation unit 18, recommended order quantity calculation unit 19, and recommended stock quantity calculation unit 20 calculate the recommended amount, order quantity, and stock quantity, respectively. This allows for easy and appropriate inventory management.

[0086] (Embodiment 2) In the first embodiment, an example is shown in which recommended value information is obtained based on order data of a manufacturing base. However, this disclosure is not limited to this. As illustrated in FIG. 14 , when the storage device 30 is connected to the system of a sales base via an internal network or an external network and the sales plan is directly available, for example, the sales plan information storage unit 303 may be provided instead of the order information storage unit 302, and the recommended value information may be obtained based on the sales plan information. In this case, the processing is substantially the same as the processing in the first embodiment. Alternatively, both the order information storage unit 302 and the sales plan information storage unit 303 may be provided, and the recommended value may be obtained from the sales plan for a sales base for which sales information is available, and from the order information for a sales base for which a sales plan is difficult to obtain.

[0087] (Modification of the embodiment) In the embodiment, the target parts are general-purpose parts that are used for general purposes, but they may be any type of part or article.

[0088] In the embodiment, the order quantity is the average value of the required part quantities over a plurality of periods, but this is not limitative and may be changed as appropriate, for example, to a weighted average. In the embodiment, calculation data is prepared for both the part requirement stage and the product requirement stage, but calculation data may be prepared only for the part procurement stage.

[0089] In the embodiment, the information acquiring unit 11 acquires performance information by sending an instruction to the storage device 30 to transmit performance information, but the present disclosure is not limited to this. The storage device 30 may periodically transmit performance information to the inventory management device 10 without following an instruction from the inventory management device 10.

[0090] In the embodiment, the monthly sales ratio is stored in the monthly sales ratio data 268 in the storage unit 26, but the monthly sales ratio in the monthly sales ratio data 268 may be set or changed to any monthly sales ratio by the user.

[0091] In the embodiment, a predetermined monthly sales ratio is stored in monthly sales ratio data 268 in storage unit 26, but the present disclosure is not limited to this. If the procurement lead time in parts master table 263 is shorter than the predetermined monthly sales ratio, the procurement lead time may be set as the monthly sales ratio. For example, if the predetermined monthly sales ratio is 0.5 months and the procurement lead time is 0.23 months (7 days), the shorter of the two procurement lead times, 0.23 months, may be given priority and set as the monthly sales ratio.

[0092] Furthermore, the above hardware configuration and flowchart are merely examples and can be changed and modified as desired.

[0093] The core processing components of inventory management device 10, such as calculation unit 103, temporary storage unit 101, storage unit 102, input unit 104, transmission / reception unit 105, and display unit 106, can be realized using a conventional computer system rather than a dedicated system. For example, a computer program for executing the above operations may be stored and distributed on a computer-readable recording medium such as a flexible disk, CD-ROM (Compact Disc - Read Only Memory), or DVD-ROM (Digital Versatile Disc - Read Only Memory), and inventory management device 10 that executes the above processing may be configured by installing the computer program on a computer. Alternatively, inventory management device 10 may be configured by storing the computer program in a storage device of a server device on a communication network, such as the Internet, and downloading it to a conventional computer system.

[0094] In addition, when the functions of the inventory management device 10 are realized by sharing the functions between an OS (Operating System) and an application program, or by cooperation between the OS and an application program, only the application program portion may be stored on a recording medium or storage device.

[0095] It is also possible to superimpose a computer program on a transport wave and provide it via a communication network. For example, the computer program may be posted on a bulletin board system (BBS) on the communication network and provided via the communication network. The computer program may then be started and executed under the control of an OS in the same way as other application programs, thereby enabling the above-mentioned processing to be performed.

[0096] Although the preferred embodiments have been described in detail above, the present invention is not limited to the above-described embodiments, and various modifications and substitutions can be made to the above-described embodiments without departing from the scope of the claims.

[0097] Various aspects of the present disclosure are summarized below as appendices.

[0098] (Appendix 1) An inventory management device that manages the number of parts in stock, a performance information acquisition means for acquiring performance information including information on the number of parts received, the number of parts shipped, and the number of parts in stock; a parts required quantity calculation means for calculating the number of parts to be delivered for a plurality of periods prior to a predetermined future time point, based on the number of parts to be delivered based on a sales schedule for a product including the parts and the number of parts to be delivered specified by the performance information; a parts ordering quantity calculation means for calculating an average of the outgoing quantities over a plurality of periods calculated by the required parts quantity calculation means as the ordering quantity of the parts, which are the incoming quantities over the plurality of periods; An inventory management device comprising: (Appendix 2) the required parts quantity calculation means sets a delivery schedule for the number of parts corresponding to the product to be sold at a time point a period determined based on a procurement lead time, a manufacturing lead time, and a transportation lead time before the delivery time of the product; 10. The inventory management device of claim 1. (Appendix 3) a parts required amount conversion means for converting the number of deliveries calculated by the parts required amount calculation means into a parts required amount; a parts procurement amount conversion means for converting the number of parts to be procured calculated by the parts procurement amount calculation means; an inventory value conversion means for converting the inventory quantity of the parts obtained based on the dispatch quantity calculated by the required parts quantity calculation means and the ordered quantity calculated by the parts ordered quantity calculation means into an inventory value; The inventory management device according to claim 1 or 2, further comprising a recommended amount calculation means for calculating a recommended value of the inventory amount at a predetermined time based on the inventory amount calculated by the inventory amount conversion means and a predetermined monthly sales ratio indicating the proportion of the inventory amount at a predetermined time in the required amount of parts at a time one point after the predetermined time. (Appendix 4) the required parts amount conversion means converts the dispatch quantity calculated by the required parts amount calculation means into the required parts amount by multiplying the dispatch quantity calculated by the required parts amount calculation means by a purchase unit price indicating a predetermined unit price of purchase of the part; the parts procurement amount conversion means converts the procurement quantity calculated by the parts procurement amount calculation means into the parts procurement amount by multiplying the procurement quantity calculated by the parts procurement amount calculation means by the purchase unit price; The inventory management device described in Appendix 3, wherein the inventory value conversion means converts the inventory quantity into the inventory value by multiplying the inventory quantity of the part, which is obtained based on the dispatch quantity calculated by the required parts quantity calculation means and the order quantity calculated by the parts order quantity calculation means, by the purchase price. (Appendix 5) The inventory management device according to claim 3 or 4, wherein the recommended amount calculation means calculates the recommended value of the parts procurement amount at the predetermined time by adding the recommended value of the inventory amount at the predetermined time and the required part amount at the predetermined time. (Appendix 6) a recommended ordering quantity calculation means for calculating a recommended parts ordering quantity value indicating a recommended value for the ordering quantity by dividing the recommended value of the parts ordering amount at the predetermined time by the purchase unit price; a recommended inventory quantity calculation means for calculating a recommended inventory quantity value indicating a recommended value of the inventory quantity by dividing the recommended value of the inventory amount at the predetermined time by the purchase price; a recommended value information output means for outputting recommended value information indicating information on recommended values ​​including the recommended part ordering quantity and the recommended inventory quantity; 6. The inventory management device of claim 5, further comprising: (Appendix 7) An inventory management device according to any one of Supplementary Note 1 to Supplementary Note 6, and a storage device; The storage device stores the performance information. Inventory management system. (Appendix 8) Obtain performance information including information on the number of parts received, sent, and in stock, determining the number of parts to be delivered for a plurality of future periods based on the number of parts to be delivered based on a sales plan for a product including the parts and the number of parts to be delivered specified by the performance information; The average value of the number of parts shipped during the plurality of periods is set as the number of parts ordered during the plurality of periods. Inventory management methods. (Appendix 9) On the computer, Obtain performance information including information on the number of parts received, sent, and in stock, determining the number of parts to be delivered for a plurality of future periods based on the number of parts to be delivered based on a sales plan for a product including the parts and the number of parts to be delivered specified by the performance information; The average value of the number of parts shipped during the plurality of periods is set as the number of parts ordered during the plurality of periods. A program that executes a process. [Explanation of symbols]

[0099] 10 inventory management device, 11 information acquisition unit, 12 parts required quantity calculation unit, 13 parts ordering quantity calculation unit, 14 inventory quantity calculation unit, 15 parts required amount conversion unit, 16 parts ordering amount conversion unit, 17 inventory amount conversion unit, 18 recommended amount calculation unit, 19 recommended ordering quantity calculation unit, 20 recommended inventory quantity calculation unit, 21 recommended value information output unit, 26 memory unit, 30 storage device, 40 user terminal, 100 inventory management system, 101 temporary memory unit, 102 memory unit, 103 calculation unit, 104 input unit, 105 transmission / reception unit, 106 display unit, 261 actual result table, 262 product master table, 263 parts master table, 264 transportation lead time master table, 265 calculated data, 266 converted value data, 267 recommended value data, 268 monthly sales ratio data, 269 order data, 301 Actual performance information storage section, 302 order information storage section, 303 sales plan information storage section, P stock quantity, S stock quantity, I stock quantity.

Claims

1. An inventory management device that manages the number of parts in stock, a performance information acquisition means for acquiring performance information for each predetermined period, the performance information including information on the number of parts received, the number of parts dispatched, and the number of parts in stock; a parts required quantity calculation means for setting a delivery schedule for the number of parts corresponding to the product to be sold during a plurality of predetermined periods from a point in time prior to the delivery time of the product by a period determined based on a procurement lead time, a manufacturing lead time, and a transportation lead time to the delivery time, generating a delivery quantity of the parts specified by the performance information, and calculating the delivery quantity of the parts during a plurality of predetermined periods by adding the set delivery schedule number of parts and the generated delivery quantity of the parts; a parts ordering quantity calculation means for calculating an average of the outgoing quantities for the plurality of predetermined periods calculated by the required parts quantity calculation means as the ordering quantity of the parts, which is the incoming quantities for the plurality of predetermined periods; An inventory management device comprising:

2. a parts required amount conversion means for converting the number of deliveries calculated by the parts required amount calculation means into a parts required amount; a parts procurement amount conversion means for converting the number of parts to be procured calculated by the parts procurement amount calculation means; an inventory value conversion means for converting the inventory quantity of the parts obtained based on the dispatch quantity calculated by the required parts quantity calculation means and the ordered quantity calculated by the parts ordered quantity calculation means into an inventory value; 2. The inventory management device of claim 1, further comprising a recommended amount calculation means for calculating a recommended value of the inventory amount at a predetermined time based on the inventory amount calculated by the inventory amount conversion means and a predetermined monthly sales ratio indicating the proportion of the inventory amount at a predetermined time in the required amount of parts at a time one point in time later than the predetermined time.

3. the required parts amount conversion means converts the dispatch quantity calculated by the required parts amount calculation means into the required parts amount by multiplying the dispatch quantity calculated by the required parts amount calculation means by a purchase unit price indicating a predetermined unit price of purchase of the part; the parts procurement amount conversion means converts the procurement quantity calculated by the parts procurement amount calculation means into the parts procurement amount by multiplying the procurement quantity calculated by the parts procurement amount calculation means by the purchase unit price; 3. The inventory management device according to claim 2, wherein the inventory value conversion means converts the inventory quantity into the inventory value by multiplying the inventory quantity of the part, which is obtained based on the dispatch quantity calculated by the required parts quantity calculation means and the ordered quantity calculated by the parts ordered quantity calculation means, by the purchase price.

4. 4. The inventory management device according to claim 3, wherein the recommended amount calculation means calculates the recommended value of the parts procurement amount at the predetermined time by adding the recommended value of the inventory amount at the predetermined time and the required part amount at the predetermined time.

5. a recommended ordering quantity calculation means for calculating a recommended parts ordering quantity value indicating a recommended value for the ordering quantity by dividing the recommended value of the parts ordering amount at the predetermined time by the purchase unit price; a recommended inventory quantity calculation means for calculating a recommended inventory quantity value indicating a recommended value of the inventory quantity by dividing the recommended value of the inventory amount at the predetermined time by the purchase price; a recommended value information output means for outputting recommended value information indicating information on recommended values ​​including the recommended part ordering quantity and the recommended inventory quantity; The inventory control device of claim 4 further comprising:

6. An inventory management system comprising the inventory management device according to claim 1 and a storage device, The storage device stores the performance information. Inventory management system.

7. A computer-implemented inventory management method, comprising: Acquire performance information for each predetermined period, the performance information including information on the number of parts received, the number of parts shipped, and the number of parts in stock; setting a delivery schedule for the number of parts corresponding to the product to be sold for a plurality of predetermined periods from a point in time prior to the delivery time of the product by a period determined based on a procurement lead time, a manufacturing lead time, and a transportation lead time to the delivery time, and generating a delivery quantity of the parts specified by the performance information, and calculating the delivery quantity of the parts for a plurality of predetermined periods by adding the set delivery schedule delivery quantity of the parts and the generated delivery quantity of the parts; The average value of the number of parts shipped during the plurality of predetermined periods is set as the number of parts to be procured during the plurality of predetermined periods. Inventory management methods.

8. On the computer, Acquire performance information for each predetermined period, the performance information including information on the number of parts received, the number of parts shipped, and the number of parts in stock; setting a delivery schedule for the number of parts corresponding to the product to be sold for a plurality of predetermined periods from a point in time prior to the delivery time of the product by a period determined based on a procurement lead time, a manufacturing lead time, and a transportation lead time to the delivery time, and generating a delivery quantity of the parts specified by the performance information, and calculating the delivery quantity of the parts for a plurality of predetermined periods by adding the set delivery schedule delivery quantity of the parts and the generated delivery quantity of the parts; The average value of the number of parts shipped during the plurality of predetermined periods is set as the number of parts to be procured during the plurality of predetermined periods. A program that executes a process.

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