Manufacturing control system and manufacturing control method

Abstract

To provide a manufacturing management system and a manufacturing management method that can reduce manufacturing cost.SOLUTION: A manufacturing management system comprises a storage unit 11 and an operation unit 12. The storage unit 11 stores management data including the number of components demanded, the number of components in stock, and whether a user owns a die for manufacturing components. The operation unit 12 determines a method for manufacturing components based on the management data stored in the storage unit 11. When the user does not own the die for manufacturing components and the number of shortage of components in stock obtained by subtracting the number of components in stock from the number of components demanded is equal to or less than a first threshold, the operation unit 12 determines a manufacturing method using lamination molding as the method for manufacturing components.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a manufacturing management system and a manufacturing management method. [Background technology]

[0002] Patent Document 1 discloses an inventory addition device for responding to fluctuations in manufacturing plans, which is intended to reduce inventory waste caused by fluctuations in orders. The inventory addition device for accommodating fluctuations in a manufacturing plan described in Patent Document 1 calculates the amount of inventory from order data for a product, and corrects the manufacturing plan based on the calculated amount of inventory. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 8-215996 Summary of the Invention [Problem to be solved by the invention]

[0004] When manufacturing parts using molds, the manufacturing cost per part decreases as the production volume of the parts increases. On the other hand, when manufacturing parts using additive manufacturing, the manufacturing cost per part does not fluctuate much regardless of the production volume of the parts. Therefore, the magnitude relationship between the manufacturing cost when manufacturing parts using a mold and the manufacturing cost when manufacturing parts using additive manufacturing varies depending on the production volume of the parts.

[0005] As such, the cheapest manufacturing method varies depending on the production volume of the parts, so in order to sufficiently reduce the manufacturing costs of the parts, it is necessary to determine the manufacturing method with the lowest manufacturing costs depending on the production volume of the parts. Patent Document 1 does not disclose any technology that can solve such problems.

[0006] The present disclosure has been made to solve such problems, and aims to provide a manufacturing management system and manufacturing management method that can reduce manufacturing costs. [Means for solving the problem]

[0007] A manufacturing management system according to one aspect of the present disclosure includes: a storage unit that stores management data including the number of parts in demand, the number of parts in stock, and whether or not the user owns a mold for manufacturing the parts; a calculation unit that determines a manufacturing method of the part based on the management data stored in the storage unit, The calculation unit If the user does not own a mold for manufacturing the part, and the number of shortages of the part, which is the number of parts in demand minus the number of parts in stock, is equal to or less than a first threshold, determining a manufacturing method using additive manufacturing as the manufacturing method for the part. It is a manufacturing management system.

[0008] With this configuration, the manufacturing management system according to the present disclosure can determine a manufacturing method with low manufacturing costs according to the number of parts to be produced, thereby reducing the manufacturing costs of the parts.

[0009] In one embodiment of the manufacturing management system of the present disclosure, the management data may further include the demand quantity of the part in a specified period in the past, and the calculation unit may determine, if a user owns a mold for manufacturing the part and the demand quantity of the part in the specified period in the past is greater than a second threshold, a manufacturing method using the mold as the manufacturing method for the part. With this configuration, the manufacturing management system according to the present disclosure can determine a manufacturing method with low manufacturing costs according to the number of parts to be produced, thereby reducing the manufacturing costs of the parts.

[0010] In one embodiment of the manufacturing management system of the present disclosure, the calculation unit may determine a manufacturing method using additive manufacturing as the manufacturing method for the part and determine to discard the mold if a user owns a mold for manufacturing the part, the demand quantity for the part during a predetermined period in the past is less than or equal to a second threshold, and the inventory shortage quantity is less than or equal to a third threshold. With this configuration, the manufacturing management system according to the present disclosure can determine a manufacturing method with low manufacturing costs according to the number of parts to be produced, thereby reducing the manufacturing costs of the parts.

[0011] In the manufacturing control system according to the aspect of the present disclosure, the first threshold value and the second threshold value may be set to be greater than the third threshold value. This configuration can prevent situations where the mold needs to be repeatedly discarded and remade.

[0012] In one embodiment of the manufacturing management system of the present disclosure, if the user does not own a mold for manufacturing the part and the inventory shortage is greater than a first threshold, the calculation unit may create a mold for manufacturing the part and determine a manufacturing method using the mold as the manufacturing method for the part. With this configuration, the manufacturing management system according to the present disclosure can determine a manufacturing method with low manufacturing costs according to the number of parts to be produced, thereby reducing the manufacturing costs of the parts.

[0013] In one embodiment of the manufacturing management system of the present disclosure, if a user owns a mold for manufacturing the part, the demand quantity of the part is less than or equal to a second threshold, and the inventory shortage quantity is greater than a third threshold, the calculation unit may determine a manufacturing method using the mold as a manufacturing method for the part, and may determine to discard the mold after manufacturing the part until the inventory quantity of the part matches the demand quantity of the part. With this configuration, the manufacturing management system according to the present disclosure can reduce the manufacturing costs of parts while also reducing the maintenance costs of molds.

[0014] In one embodiment of the manufacturing management system of the present disclosure, the calculation unit may, if the user does not own a mold for manufacturing the part, the inventory shortage is less than or equal to a first threshold, and the increase in demand for the part is greater than or equal to a fourth threshold, create the mold and determine a manufacturing method using the mold as the manufacturing method for the part. With this configuration, the manufacturing management system according to the present disclosure can appropriately suppress the production costs of parts even in cases where demand increases suddenly.

[0015] In the manufacturing management system according to one aspect of the present disclosure, when the component is a safety component, the calculation unit may determine a manufacturing method using a mold as the manufacturing method for the component. With this configuration, the manufacturing management system according to the present disclosure can improve the safety of safety components.

[0016] In a manufacturing management system according to one aspect of the present disclosure, if the calculation unit determines that a manufacturing method using additive manufacturing is the manufacturing method for the part, but the user does not have the design drawings for the part, the calculation unit may decide to outsource the manufacturing of the part. This configuration reduces the personnel costs required to create design drawings.

[0017] A management and manufacturing method according to one aspect of the present disclosure includes: storing management data including at least the number of parts in demand, the number of parts in stock, and whether or not the user owns a mold for manufacturing the parts; A manufacturing management method in which a computer executes a process of determining a manufacturing method for the part based on the stored management data, If the user does not own a mold for manufacturing the part, and the value obtained by subtracting the number of parts in stock from the number of parts in demand is equal to or less than a first threshold, determining a manufacturing method using additive manufacturing as a manufacturing method for the part. It is a manufacturing control method. [Effects of the Invention]

[0018] The present disclosure can provide a manufacturing management system and a manufacturing management method that can reduce manufacturing costs. [Brief explanation of the drawings]

[0019] [Figure 1] 1 is a block diagram showing a configuration of a manufacturing management system according to a first embodiment. [Figure 2] 4 is a flowchart showing the operation of the manufacturing management system according to the first embodiment. [Figure 3] 4 is a flowchart showing the operation of the manufacturing management system according to the first embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0020] (First embodiment) <Configuration of manufacturing control device> DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present disclosure will now be described in detail with reference to the accompanying drawings. A manufacturing management system according to this embodiment is realized as a manufacturing management device. First, the configuration of the manufacturing management system according to this embodiment will be described in detail. Fig. 1 is a block diagram for explaining the configuration of the manufacturing management device according to the first embodiment.

[0021] The manufacturing management device 1 according to this embodiment determines a manufacturing method for a part based on management data for the part, which will be described later. More specifically, the manufacturing management device 1 according to this embodiment selects, based on the management data for the part, whether to manufacture the part using a mold or to manufacture the part using additive manufacturing. The manufacturing control device 1 according to this embodiment includes a storage unit 11 and a calculation unit 12.

[0022] The storage unit 11 is a storage device realized using a RAM (Random Access Memory), a ROM (Read Only Memory), etc. The storage unit 11 stores management data of parts. The management data includes the number of parts in demand, the number of parts in stock, and whether or not the user owns a mold for manufacturing the parts. The management data according to this embodiment also includes the number of parts in demand for a predetermined period in the past.

[0023] However, the demand number of parts refers to the number of parts that are expected to be ordered in the future at the time when the manufacturing management device 1 determines the manufacturing method. The number of parts in stock refers to the number of parts held by the user at the time when the manufacturing management device 1 determines the manufacturing method.

[0024] The number of parts in demand for a predetermined period in the past refers to the number of parts ordered during that period. The predetermined period in the past is preferably a period ending at the time when the manufacturing management device 1 determines the manufacturing method.

[0025] The contents included in the management data may be input by the user or may be acquired from an external system. Furthermore, it is preferable that the management data be updated at predetermined intervals.

[0026] The storage unit 11 stores programs for controlling the operation of the manufacturing management apparatus 1. The calculation unit 12 reads and executes these programs from the storage unit 11 to perform various processes, which will be described later. In other words, the manufacturing management apparatus 1 according to this embodiment functions as a computer.

[0027] The program includes a set of instructions (or software code) that, when loaded into a computer, causes the computer to perform one or more functions described in the embodiments. The program may be stored in a non-transitory computer-readable medium or a tangible storage medium. By way of example and not limitation, computer-readable media or tangible storage media include RAM, ROM, flash memory, SSD or other memory technology, CD-ROM, DVD (digital versatile disc), Blu-ray (registered trademark) disc or other optical disk storage, magnetic cassette, magnetic tape, magnetic disk storage or other magnetic storage device. The program may be transmitted on a transitory computer-readable medium or a communication medium. By way of example and not limitation, transitory computer-readable media or communication media include electrical, optical, acoustic, or other forms of propagated signals.

[0028] The calculation unit 12 executes various processes described below by reading and executing software (computer programs) from the storage unit 11. The calculation unit 12 may be, for example, a microprocessor, an MPU (Micro Processing Unit), or a CPU (Central Processing Unit). The calculation unit 12 may include multiple processors.

[0029] The calculation unit 12 determines a manufacturing method for the part based on the management data stored in the storage unit 11. More specifically, the calculation unit 12 compares the numerical values ​​recorded in the management data or the numerical values ​​calculated from the numerical values ​​recorded in the management data with various predetermined threshold values ​​to determine the manufacturing method for the part.

[0030] The calculation unit 12 first refers to the management data and determines whether the user owns a mold for manufacturing the part. The calculation unit 12 also calculates the shortage quantity of the part by subtracting the inventory quantity of the part from the demand quantity of the part recorded in the management data.

[0031] When the user does not own a mold used to manufacture the part and the number of parts with a shortage in stock is equal to or less than a first threshold, the calculation unit 12 determines to manufacture the part by additive manufacturing. In addition, if the user does not own the mold used to manufacture the part and the number of parts that are out of stock is greater than a first threshold, the calculation unit 12 decides to create a mold to manufacture the part and use the mold to manufacture the part.

[0032] When manufacturing parts using a mold, the manufacturing cost per part increases as the number of parts manufactured decreases. Therefore, when the number of parts that are out of stock is below a certain number, manufacturing the parts using additive manufacturing can reduce the manufacturing cost of the parts more than manufacturing the parts using a mold.

[0033] On the other hand, when the number of parts that are out of stock is greater than a predetermined number, the manufacturing costs of the parts can be reduced more by manufacturing the parts using a mold than by manufacturing the parts using additive manufacturing.

[0034] However, even if the user does not own a mold for manufacturing the part and the number of parts in short supply is equal to or less than the first threshold, if the increase in demand is equal to or greater than the fourth threshold, the calculation unit 12 may decide to create a mold for manufacturing the part and use the mold to manufacture the part. With this configuration, even in the event of a sudden increase in demand, the production costs of parts can be appropriately reduced.

[0035] The demand increase range here corresponds to the margin of error on the increase side of the demand number recorded in the management data. In other words, the larger the demand increase range, the more likely the demand number will increase.

[0036] The extent of the increase in demand can be determined, for example, from the number of products using the part remaining on the market and the service life of the part. In this case, the increase in demand increases as the number of products using the part in question remaining on the market increases, and decreases as the part's useful life decreases. The increase in demand determined in this way indicates the increase in the number of products in demand due to the failure of the part.

[0037] The molds used to manufacture parts incur maintenance costs for storage. Therefore, if the user owns a mold for manufacturing parts, the calculation unit 12 determines whether to use the mold for manufacturing, and also determines whether to discard the mold.

[0038] Specifically, if the user owns a mold for manufacturing a part and the demand quantity for that part during a specified period in the past is greater than a second threshold, the calculation unit 12 determines to manufacture the part using that mold.

[0039] Here, if the demand quantity for the part in a predetermined period in the past is greater than a predetermined quantity, it is possible to expect a demand quantity for the part in the future that will be large enough to make the manufacturing cost of the part small enough if it is manufactured using a mold. Therefore, in the above case, if it is decided to manufacture the part using the mold, the manufacturing management device 1 can reduce the manufacturing cost of the part.

[0040] Furthermore, if the user owns a mold for manufacturing the part, the demand quantity of the part in a predetermined past period is equal to or less than a second threshold, and the inventory shortage quantity of the part is greater than a third threshold, the calculation unit 12 determines a manufacturing method using the mold as the manufacturing method for the part, and then determines to manufacture the part until the inventory quantity of the part matches the demand quantity of the part, and then to discard the mold.

[0041] If the demand volume for the part in a predetermined period in the past is equal to or less than a predetermined volume, it is not possible to expect a demand volume for the part in the future that will justify the maintenance costs of the mold. On the other hand, if the inventory shortage at the time of determining the manufacturing method is greater than the third threshold, the number of parts required to be manufactured to eliminate the inventory shortage at the time of determining the manufacturing method is a number that is small enough to reduce the manufacturing cost of the parts if they were manufactured using existing molds.

[0042] Therefore, in the above case, the calculation unit 12 determines to manufacture the part using the existing mold and to discard the mold after manufacturing the part. With this configuration, the manufacturing management device 1 can reduce the manufacturing cost of the part and also the maintenance cost of the mold.

[0043] Furthermore, if the user owns a mold for manufacturing a part, the demand quantity for the part during a specified period in the past is equal to or less than a second threshold, and the inventory shortage quantity for the part is equal to or less than a third threshold, the calculation unit 12 determines a manufacturing method using additive manufacturing as the manufacturing method for the part and also determines to discard the mold.

[0044] If the demand volume for the part in a predetermined period in the past is equal to or less than a predetermined volume, it is not possible to expect a demand volume for the part in the future that will justify the maintenance costs of the mold. Furthermore, if the inventory shortage at the time the manufacturing method is decided is less than a predetermined number, the number of parts required to be manufactured to eliminate the inventory shortage at the time the manufacturing method is decided is less than the number required to manufacture the parts using a mold so that the manufacturing cost is sufficiently low.

[0045] Therefore, in the above case, the calculation unit 12 determines to manufacture the part by additive manufacturing. With this configuration, the manufacturing management device 1 can reduce the manufacturing cost of the part and also the maintenance cost of the mold.

[0046] Here, the first threshold, the second threshold, and the third threshold are preferably set so that the first threshold and the second threshold are greater than the third threshold. With this configuration, it is possible to prevent the mold from being repeatedly discarded and remade.

[0047] Note that, when the part to be manufactured is a safety part, the calculation unit 12 may determine to manufacture the part using a mold. In other words, when the part to be manufactured is a safety part, the calculation unit 12 may determine to manufacture the part using a mold regardless of the information recorded in the management data.

[0048] When comparing manufacturing parts using a mold with manufacturing parts using additive manufacturing, parts manufactured using a mold tend to be stronger. Therefore, with this configuration, the manufacturing management device 1 can improve the safety of safety parts.

[0049] When the calculation unit 12 determines that a part is to be manufactured by additive manufacturing, the calculation unit 12 may determine whether the user possesses design drawings for the part. If the user does not possess design drawings for the part, the calculation unit 12 may determine that the manufacturing of the part is to be outsourced. This configuration can reduce the personnel costs required for creating design drawings.

[0050] <Operation of manufacturing control device> Next, the operation of the manufacturing management device, that is, the manufacturing management method according to the first embodiment will be described in detail.

[0051] 2 and 3 are flowcharts for explaining the operation of the manufacturing management device according to the first embodiment, more specifically, the operation of the calculation unit 12 according to the first embodiment.

[0052] First, the calculation unit 12 determines whether or not the user owns a mold for manufacturing a part (step S101). If the user does not own a mold for manufacturing the part (NO in step S101), the calculation unit 12 determines whether the number of items in short supply is equal to or less than the first threshold value (step S102).

[0053] If the inventory shortage quantity is not equal to or less than the first threshold value (step S102 NO), the calculation unit 12 determines to create a mold and manufacture parts using the mold (step S105), and the manufacturing management device 1 ends the series of operations.

[0054] If the inventory shortage quantity is equal to or less than the first threshold (YES in step S102), the calculation unit 12 determines whether or not the demand increase is equal to or greater than a fourth threshold (step S103). If the increase in demand is equal to or greater than the fourth threshold (YES in step S103), the calculation unit 12 determines to create a mold and manufacture parts using the mold (step S105), and the manufacturing management device 1 ends the series of operations.

[0055] If the increase in demand is not equal to or greater than the fourth threshold (NO in step S103), the calculation unit 12 determines to manufacture the part by additive manufacturing (step S104), and the manufacturing management device 1 ends the series of operations.

[0056] If the user owns a mold for manufacturing parts (YES in step S101), the calculation unit 12 determines whether the number of demands in a predetermined past period is greater than a second threshold value (step S106).

[0057] If the number of demands in the past predetermined period is greater than the second threshold value (YES in step S106), the calculation unit 12 determines to manufacture the part using the mold (step S107), and the manufacturing management device 1 ends the series of operations.

[0058] If the number of items in demand for a predetermined period in the past is greater than the second threshold (NO in step S106), the calculation unit 12 determines whether the number of items in short supply is equal to or smaller than a third threshold (step S108).

[0059] If the inventory shortage quantity is not less than the third threshold (step S108 NO), the calculation unit 12 decides to manufacture the part using the mold and discard the mold after manufacturing is completed (step S108), and the manufacturing management device 1 ends the series of operations.

[0060] If the inventory shortage quantity is equal to or less than the third threshold value (YES in step S108), the calculation unit 12 determines to manufacture the part using the mold and discard the mold (step S108), and the manufacturing management device 1 ends the series of operations.

[0061] As described above, the manufacturing management device 1 according to this embodiment includes a memory unit 11 that stores management data including the number of parts in demand, the number of parts in stock, and whether or not the user owns a mold for manufacturing the parts, and a calculation unit that determines a manufacturing method for the parts based on the management data.

[0062] With this configuration, the manufacturing management device 1 according to this embodiment can determine a manufacturing method that reduces manufacturing costs according to the number of parts to be produced. As a result, the manufacturing management device 1 according to this embodiment can reduce the manufacturing costs of parts.

[0063] (Other embodiments) In the manufacturing control system according to the first embodiment, the storage unit 11 and the calculation unit 12 are implemented in a single device, but the manufacturing control system according to the present disclosure may be made up of multiple devices.

[0064] For example, the bid management system according to the present disclosure may include an external storage device and a computer connected to the external storage device via a wired or wireless connection, where the external storage device functions as the storage unit 11 and the computer functions as the calculation unit 12.

[0065] The present invention has been described above in accordance with the above-described embodiments, but the present invention is not limited to the configurations of the above-described embodiments, and naturally includes various modifications, alterations, and combinations that can be made by a person skilled in the art within the scope of the invention claimed in the claims of this application. [Explanation of symbols]

[0066] 1 Manufacturing control equipment 11 Storage section 12 Arithmetic section

Claims

1. a storage unit that stores management data including the number of parts in demand, the number of parts in stock, and whether or not the user owns a mold for manufacturing the parts; a calculation unit that determines a manufacturing method of the part based on the management data stored in the storage unit, The calculation unit If the user does not own a mold for manufacturing the part, and the number of shortages of the part, which is calculated by subtracting the number of parts in stock from the number of parts in demand, is equal to or less than a first threshold, determining a manufacturing method using additive manufacturing as the manufacturing method for the part. Manufacturing control system.

2. the management data further includes a demand quantity of the part in a predetermined period in the past; The calculation unit If a user owns a mold for manufacturing the part and the number of demands for the part in a predetermined period in the past is greater than a second threshold, a manufacturing method using the mold is determined as a manufacturing method for the part. The manufacturing control system according to claim 1 .

3. The calculation unit If a user owns a mold for manufacturing the part, and the number of demands for the part in a predetermined past period is equal to or less than a second threshold, and the number of shortages in inventory is equal to or less than a third threshold, determine a manufacturing method using additive manufacturing as a manufacturing method for the part, and also determine to discard the mold. The manufacturing control system according to claim 1 .

4. the first threshold and the second threshold are greater than the third threshold; The manufacturing control system according to claim 3 .

5. The calculation unit If the user does not own a mold for manufacturing the part and the number of shortages in stock is greater than a first threshold, a mold for manufacturing the part is created, and a manufacturing method using the mold is determined as a manufacturing method for the part. The manufacturing management system according to any one of claims 1 to 4.

6. The calculation unit If a user owns a mold for manufacturing the part, the demand quantity of the part is equal to or less than a second threshold, and the inventory shortage quantity is greater than a third threshold, determine a manufacturing method using the mold as a manufacturing method for the part, and determine to manufacture the part until the inventory quantity of the part matches the demand quantity of the part and then discard the mold. The manufacturing management system according to claim 3 or 4.

7. The calculation unit If the user does not own a mold for manufacturing the part, the inventory shortage quantity is equal to or less than a first threshold, and the increase in demand for the part is equal to or greater than a fourth threshold, the mold is manufactured, and a manufacturing method using the mold is determined as a manufacturing method for the part. The manufacturing management system according to any one of claims 1 to 4.

8. The calculation unit If the part is a safety part, a manufacturing method using a mold is determined as the manufacturing method for the part. The manufacturing management system according to any one of claims 1 to 4.

9. The calculation unit If a manufacturing method using additive manufacturing is determined as the manufacturing method for the part, but the user does not have a design drawing for the part, the user decides to outsource the manufacturing of the part. The manufacturing management system according to any one of claims 1 to 4.

10. storing management data including at least the number of parts in demand, the number of parts in stock, and whether or not the user owns a mold for manufacturing the parts; A manufacturing management method in which a computer executes a process of determining a manufacturing method for the part based on the stored management data, If the user does not own a mold for manufacturing the part, and a value obtained by subtracting the number of parts in stock from the number of parts in demand is equal to or less than a first threshold, determining a manufacturing method using additive manufacturing as a manufacturing method for the part. Manufacturing control methods.

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