Production planning support device, production planning support method and program

Abstract

This production plan creation assistance device (1) comprises: a product group generation unit (15) which generates, on the basis of a component configuration master that indicates a component configuration of a product, product group information that indicates a product group having common components at a constant ratio or higher; a component procurement information association unit (16) which associates component procurement information pertaining to component procurement and the product group information and generates product group component procurement information; a component requirement quantity calculation unit (17) which generates component requirement quantity information that indicates a requirement quantity of components for each product group on the basis of the production plan information that indicates a product production plan, the component configuration master, and the product group component procurement information; and a component requirement quantity comparison unit (19) which generates and outputs, for each product group, component requirement quantity comparison information that indicates a comparison result obtained by comparing component inventory information that indicates a component inventory quantity of a customer, the component requirement quantity information generated at the time, and the component requirement quantity information generated at a previous time.

Description

[Technical field]

[0001] The present disclosure relates to a production planning support device, a production planning support method, and a program. [Background technology]

[0002] In order to respond to fluctuations in product demand, factories need to flexibly plan production plans for products with short delivery times. However, because it is necessary to take into account constraints on parts procurement, it can be difficult to respond to required changes in production plans. One example of a constraint on parts procurement is that when the production volume of a certain product is increased, the time from ordering to delivery of the parts that make up the product is long, and parts procurement cannot be completed in time. To address this risk of parts procurement, product groups that have many common parts between products are grouped together, and the production volume of the product group is increased or decreased to suppress the fluctuation in the quantity of common parts. This makes it possible to take procurement risk measures limited to the dedicated parts within the product group.

[0003] Patent Document 1 discloses a production planning system that adjusts planned production quantities according to demand conditions within a product group framework by reusing common parts between products, thereby supporting changes to production plans. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 10-315100 Summary of the Invention [Problem to be solved by the invention]

[0005] In the technology described in Patent Document 1, it is necessary to hold product groups as master data in advance, so that the know-how of experienced design personnel is required to create product groups, resulting in a large workload.

[0006] The present disclosure has been made to solve the problems described above, and aims to reduce the workload of creating product groups that have common parts and to support changes to production plans. [Means for solving the problem]

[0007] In order to achieve the above object, a production plan creation support device according to the present disclosure is a production plan creation support device that supports changes to a production plan for a product. The production plan creation support device includes a product group generation unit, a parts procurement information association unit, a parts requirement calculation unit, a parts requirement information storage unit, and a parts requirement comparison unit. The product group generation unit generates product groups having a certain ratio or more of common parts based on a parts configuration master indicating the parts configuration of the product, and generates product group information indicating the created product groups. The parts procurement information association unit generates product group parts procurement information by associating parts procurement information regarding parts procurement with product group information. The parts requirement calculation unit calculates the parts requirement for each product group based on production plan information indicating the production plan of the product, the parts configuration master, and the product group parts procurement information, and generates parts requirement information indicating the parts requirement for each product group. The parts requirement information storage unit stores the parts requirement information generated by the parts requirement calculation unit. The parts requirements comparison unit compares parts inventory information indicating the inventory amounts of parts at the supplier for each product group, the parts requirements information generated this time, and the parts requirements information generated last time, and generates and outputs parts requirements comparison information indicating the comparison results. Effect of the Invention

[0008] According to the present disclosure, by automatically generating product groups that have a certain percentage or more of common parts and generating and outputting part requirement quantity comparison information for each product group, it is possible to reduce the workload of creating product groups that have common parts and support changes to production plans. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a diagram showing a configuration example of a production plan creation support device according to an embodiment; [Diagram 2] FIG. 2 is a diagram showing an example of a parts configuration master according to an embodiment; [Diagram 3] FIG. 1 is a diagram showing an example of part commonality information according to an embodiment; [Figure 4] FIG. 1 is a diagram showing an example of product group information according to an embodiment; [Diagram 5] FIG. 1 is a diagram showing an example of part procurement information according to an embodiment; [Figure 6] FIG. 1 is a diagram showing an example of product group part procurement information according to an embodiment; [Figure 7] FIG. 1 is a diagram showing an example of production plan information according to an embodiment; [Figure 8] FIG. 1 is a diagram showing an example of required part quantity information according to an embodiment; [Figure 9] FIG. 13 is a diagram showing an example of part requirement comparison information according to an embodiment; [Figure 10] A flowchart showing an example of the operation of a production plan creation support process according to an embodiment. [Figure 11] FIG. 2 is a diagram showing an example of a hardware configuration of a production plan creation support device according to an embodiment; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] A production planning support device, a production planning support method, and a program according to the present embodiment will be described in detail below with reference to the drawings, in which the same or corresponding parts are denoted by the same reference numerals.

[0011] The configuration of a production plan creation support device 1 according to an embodiment will be described with reference to Fig. 1. The production plan creation support device 1 according to the embodiment includes a parts configuration master acquisition unit 11 that acquires a parts configuration master from a parts configuration master storage unit 2 that stores a parts configuration master indicating a parts configuration of a product provided in a design management system, a parts procurement information acquisition unit 12 that acquires parts procurement information from a parts procurement information storage unit 3 that stores parts procurement information related to procurement of parts provided in a parts procurement management system, a production plan information acquisition unit 13 that acquires production plan information from a production plan information storage unit 4 that stores production plan information indicating a production plan of a product provided in a production management system, and a parts inventory information acquisition unit 14 that acquires parts inventory information from a parts inventory information storage unit 5 that stores parts inventory information indicating the monthly inventory amount of parts of a supplier provided in a supplier management system.

[0012] The production plan creation support device 1 also includes a product group generation unit 15 that generates product groups having more than a certain ratio of common parts, based on the parts structure master acquired by the parts structure master acquisition unit 11, and generates product group information indicating the created product groups; a parts procurement information association unit 16 that generates product group parts procurement information by associating the parts procurement information and product group information acquired by the parts procurement information acquisition unit 12; a parts requirement calculation unit 17 that calculates the parts requirement for each product group based on the production plan information, the parts structure master, and the product group parts procurement information acquired by the production plan information acquisition unit 13, and generates parts requirement information indicating the parts requirement for each product group; a parts requirement information storage unit 18 that stores the parts requirement information generated by the parts requirement calculation unit 17; and a parts requirement comparison unit 19 that compares the parts inventory information acquired by the parts inventory information acquisition unit 14 with the parts requirement information stored in the parts requirement information storage unit 18, and generates parts requirement comparison information indicating the comparison result.

[0013] The production plan creation support device 1 cooperates with a design management system, sends a transfer instruction for the parts configuration master to the design management system, and acquires the parts configuration master from the design management system. The production plan creation support device 1 cooperates with a parts procurement management system, sends a transfer instruction for parts procurement information to the parts procurement management system, and acquires the parts procurement information from the parts procurement management system. The production plan creation support device 1 cooperates with a production management system, sends a transfer instruction for production plan information to the production management system, and acquires the production plan information from the production management system. The production plan creation support device 1 cooperates with a supplier management system, sends a transfer instruction for parts inventory information to the supplier management system, and acquires the parts inventory information from the supplier management system.

[0014] The production plan creation support device 1 may be configured to include some or all of the parts configuration master storage unit 2, parts procurement information storage unit 3, production plan information storage unit 4, and parts inventory information storage unit 5. In this case, the information stored in each storage unit is updated to the latest information. Also, the production plan information may be input by a user to the production plan information acquisition unit 13.

[0015] Here, the parts structure master will be explained with reference to FIG. 2. The parts structure master contains information that defines the hierarchical structure between each item of assemblies and parts that make up a product, and information that indicates the quantities of assemblies and parts used. In addition, detailed information such as the weight, size, and materials of the assemblies and parts may be included. In the example of FIG. 2, product A is composed of parts a, b, c, etc. Product B is composed of parts a, b, d, etc. Product C is composed of parts a, e, f, etc.

[0016] Returning to Figure 1, when the parts structure master acquisition unit 11 acquires the parts structure master, the product group generation unit 15 calculates a parts commonality, which is the ratio of common parts between the products, based on the parts structure master, and generates parts commonality information indicating the parts commonality.

[0017] Here, the part commonality information will be described with reference to Fig. 3. In the example of Fig. 3, the product group having a part commonality of 100-90% with product A is product B, product C, .... The product group having a part commonality of 89-80% with product A is product D, .... The product group having a part commonality of 79-70% with product A is product E, .... The product group generation unit 15 generates product groups whose part commonality is equal to or greater than a predetermined threshold, and generates product group information indicating the product groups.

[0018] Next, product group information will be explained using Fig. 4. In the example of Fig. 4, products with a parts commonality of 90% or more are grouped together to generate product groups. Product group G1 includes product A, product B, and product C. Product group G2 includes product D, product E, and product F. Product group G3 includes product G, product H, and product I.

[0019] Returning to FIG. 1, when the parts procurement information acquisition unit 12 acquires the parts procurement information, the parts procurement information association unit 16 associates the parts procurement information with the product group information to generate product group parts procurement information.

[0020] First, parts procurement information will be explained with reference to FIG. 5. In the example of FIG. 5, parts procurement information includes a part name, a part code that identifies the part, a supplier of the part, and a procurement lead time that is the period from ordering to delivery when the supplier does not have the part in stock. The information that identifies the part may be either the part name or the part code. Hereinafter, procurement lead time will be abbreviated as procurement LT. For example, part a with part code aaa will be delivered in 10 days when ordered from supplier S1. Parts procurement information does not have to include procurement LT.

[0021] Next, product group parts procurement information in which parts procurement information and product group information are associated with each other will be described with reference to FIG. 6. Product group parts procurement information is generated for each product group. FIG. 6 is an example of product group parts procurement information for product group G1. Product group parts procurement information includes a part type indicating whether it is a common part or a dedicated part, a part name, a part code, a supplier, and a procurement LT. For example, the common parts for product group G1 are parts a, b, .... The part code for part a is aaa, the supplier is supplier S1, and the procurement LT is 10 days. The part code for part b is bbb, the supplier is supplier S2, and the procurement LT is 15 days. The dedicated parts for product A are parts c, .... The part code for part c is ccc, the supplier is supplier S3, and the procurement LT is 30 days.

[0022] Returning to FIG. 1, when the production plan information acquisition unit 13 acquires the production plan information, the parts requirement calculation unit 17 calculates the required quantity of parts for each product group based on the production plan information, the parts configuration master, and the product group parts procurement information, and generates parts requirement information indicating the required quantity of parts for each product group. The parts requirement calculation unit 17 stores the generated parts requirement information in the parts requirement information storage unit 18. The parts requirement information storage unit 18 stores the parts requirement information generated previously. If the production plan information has been changed between the previous processing and the current processing, the parts requirement information generated previously is the parts requirement information generated based on the production plan information before the change, and the parts requirement information generated this time is the parts requirement information generated based on the production plan information after the change. If the parts requirement information is generated for the first time, the parts requirement information storage unit 18 may store, for example, parts requirement information indicating an initial value generated in advance.

[0023] First, the production plan information will be explained with reference to Fig. 7. In the example of Fig. 7, the production plan information indicates a production plan that is the number of units to be produced each month. For example, the number of units to be produced for product A in January is 100, the number of units to be produced in February is 120, and the number of units to be produced in March is 90.

[0024] Next, the part requirements information will be described with reference to FIG. 8. The part requirements information is generated for each product group. FIG. 8 is an example of monthly part requirements information for product group G1. The part requirements information includes part name, part type, and monthly requirements. The information for identifying the part is not limited to the part name, but may be a part code. For example, part a used in products of product group G1 is a common part, and the required amount in January, February, and March for product group G1 is 350 pieces, 400 pieces, and 450 pieces. Part c used in products of product group G1 is a dedicated part for product A, and the required amount in January, February, and March for product group G1 is 100 pieces, 120 pieces, and 90 pieces.

[0025] Returning to FIG. 1, when parts inventory information acquisition unit 14 acquires parts inventory information, parts requirement comparison unit 19 compares the parts inventory information with the currently generated parts requirement information and the previously generated parts requirement information to generate parts requirement comparison information indicating the comparison results. The parts inventory information is information indicating the monthly parts inventory amount generated based on the client's current parts inventory amount, parts production plan, and parts sales plan. Parts requirement comparison unit 19 outputs the generated parts requirement comparison information. The parts requirement comparison information may be output, for example, by screen display, audio output, or transmission to a terminal used by a user.

[0026] Here, the part requirement comparison information will be described with reference to FIG. 9. The part requirement comparison information is generated for each product group. FIG. 9 is an example of the part requirement comparison information for product group G1. The part requirement comparison information includes the part name, the part type, the requirement for each month, the increase or decrease from the previous time, and the supplier inventory. The information for identifying the part is not limited to the part name, but may be the part code. The increase or decrease from the previous time is the value obtained by subtracting the currently calculated requirement of the part from the previously calculated requirement of the part. The supplier inventory is the supplier inventory of the part for each month. For example, part a used in the products of product group G1 is a common part, and the requirement for product group G1 in January is 350 pieces, the increase or decrease from the previous time is +20 pieces, and the supplier inventory is 70 pieces. The requirement for February is 400 pieces, the increase or decrease from the previous time is -30 pieces, and the supplier inventory is 80 pieces. The required quantity for March is 450 units, the increase / decrease from the previous time is -20 units, and the supplier inventory is 60 units.

[0027] When the parts requirement comparison information is output, the user can compare the increase / decrease from the previous time with the supplier inventory for each part name, and if the supplier inventory exceeds the increase / decrease from the previous time, determine that the changed production plan is executable, and if the supplier inventory is below the increase / decrease from the previous time, determine that the changed production plan is not executable.When the parts requirement comparison information shown in Figure 9 is output, the user can determine that the production plan cannot be changed because the increase / decrease from the previous time for part c in February (+90 units) exceeds the transaction inventory (70 units).

[0028] The part requirement comparison unit 19 may determine whether the production plan can be changed. In this configuration, the part requirement comparison unit 19 compares the increase / decrease from the previous time with the supplier inventory amount for each part name based on the part requirement comparison information, and determines that the changed production plan is executable if the supplier inventory amount is greater than the increase / decrease from the previous time, and determines that the changed production plan is not executable if the supplier inventory amount is less than the increase / decrease from the previous time. In this case, the part requirement comparison unit 19 outputs changeability information indicating whether the production plan can be changed together with the part requirement comparison information. Furthermore, when the part requirement comparison unit 19 determines that the changed production plan is not executable, it may calculate the maximum amount that can be increased for each product based on the supplier inventory amount. In this case, the part requirement comparison unit 19 outputs maximum increaseable amount information indicating the maximum amount that can be increased for each product together with the part requirement comparison information.

[0029] The parts requirement comparison information may include the supplier's procurement LT. In this configuration, when the parts requirement comparison unit 19 determines that the production plan cannot be changed, it may calculate the order point based on the supplier's procurement LT of the parts whose supplier inventory amount falls below the increase or decrease from the previous time. In this case, the parts requirement comparison information includes order point information indicating the order point of the parts whose supplier inventory amount falls below the increase or decrease from the previous time. In addition, the parts requirement comparison unit 19 may be configured to output various information used in the process of generating the parts requirement comparison information, such as the parts configuration master, product group information, product group parts procurement information, and production plan information, together with the parts requirement comparison information.

[0030] Next, the flow of the production plan creation support process executed by the production plan creation support device 1 will be described with reference to Fig. 10. The production plan creation support process shown in Fig. 10 starts, for example, when an output instruction for parts required quantity comparison information is input to the production plan creation support device 1. The parts structure master acquisition unit 11 of the production plan creation support device 1 acquires the parts structure master from the parts structure master storage unit 2 included in the design management system (step S11). The product group generation unit 15 calculates parts commonality, which is the ratio of common parts between products, based on the parts structure master acquired by the parts structure master acquisition unit 11, and generates parts commonality information indicating the parts commonality (step S12).

[0031] In the example of parts commonality information shown in Figure 3, the product group with 100-90% parts commonality with product A is product B, product C, ... The product group with 89-80% parts commonality with product A is product D, ... The product group with 79-70% parts commonality with product A is product E, ...

[0032] Returning to FIG. 10, the product group generating unit 15 generates product groups whose part commonality is equal to or greater than a predetermined threshold, and generates product group information indicating the product groups (step S13).

[0033] In the example of product group information shown in Figure 4, products with a parts commonality of 90% or more are grouped together to generate product groups. Product group G1 includes product A, product B, and product C, product group G2 includes product D, product E, and product F, and product group G3 includes product G, product H, and product I.

[0034] 10, the parts configuration master acquisition unit 11 acquires parts procurement information from the parts procurement information storage unit 3 included in the parts procurement management system (step S14). The parts procurement information association unit 16 associates the parts procurement information acquired by the parts procurement information acquisition unit 12 with the product group information, and generates product group parts procurement information (step S15).

[0035] In the example of product group parts procurement information shown in Figure 6, the common parts for product group G1 are parts a, b, .... The part code for part a is aaa, the supplier is supplier S1, and the procurement LT is 10 days. The part code for part b is bbb, the supplier is supplier S2, and the procurement LT is 15 days. The exclusive parts for product A are parts c, .... The part code for part c is ccc, the supplier is supplier S3, and the procurement LT is 30 days.

[0036] Returning to FIG. 10, the production plan information acquisition unit 13 acquires production plan information from the production plan information storage unit 4 included in the production plan management system (step S16). The parts requirement calculation unit 17 calculates the parts requirement for each product group based on the production plan information, parts configuration master, and product group parts procurement information acquired by the production plan information acquisition unit 13, and generates parts requirement information indicating the parts requirement for each product group (step S17). The parts requirement calculation unit 17 stores the generated parts requirement information in the parts requirement information storage unit 18. In the second and subsequent production plan creation support processes, the parts requirement information generated previously is stored in the parts requirement information storage unit 18. In the first production plan creation support process, the parts requirement information storage unit 18 may store, for example, parts requirement information indicating an initial value generated in advance.

[0037] 8, part a used in products of product group G1 is a common part, and the required quantity for product group G1 in January is 350 units, the required quantity for February is 400 units, and the required quantity for March is 450 units. Part c used in products of product group G1 is a dedicated part for product A, and the required quantity for product group G1 in January is 100 units, the required quantity for February is 120 units, and the required quantity for March is 90 units.

[0038] 10, the parts inventory information acquisition unit 14 acquires parts inventory information from the parts inventory information storage unit 5 included in the supplier management system (step S18). The parts requirement comparison unit 19 compares the parts inventory information acquired by the parts inventory information acquisition unit 14 with the parts requirement information generated this time and the parts requirement information generated last time, and generates parts requirement comparison information indicating the comparison result (step S19).

[0039] In the example of parts requirement comparison information shown in Figure 9, part a used in products of product group G1 is a common part, and the requirement for product group G1 in January is 350 units, the increase / decrease from the previous time is +20 units, and the supplier inventory is 70 units. The requirement for February is 400 units, the increase / decrease from the previous time is -30 units, and the supplier inventory is 80 units. The requirement for March is 450 units, the increase / decrease from the previous time is -20 units, and the supplier inventory is 60 units.

[0040] 10, the parts requirement comparison unit 19 outputs the generated parts requirement comparison information (step S20) and ends the process. When the parts requirement comparison information is output, the user compares the increase / decrease from the previous time with the supplier inventory amount for each part name, and if the supplier inventory amount is greater than the increase / decrease from the previous time, it can be determined that the changed production plan is executable, and if the supplier inventory amount is less than the increase / decrease from the previous time, it can be determined that the changed production plan is not executable.

[0041] In a configuration in which the parts requirement comparison unit 19 determines whether the production plan can be changed, after step S19, the parts requirement comparison unit 19 compares the increase / decrease from the previous time with the supplier inventory amount for each part name based on the parts requirement comparison information, and determines that the changed production plan can be executed if the supplier inventory amount is greater than the increase / decrease from the previous time, and determines that the changed production plan cannot be executed if the supplier inventory amount is less than the increase / decrease from the previous time. In this case, the parts requirement comparison information output in step S20 includes changeability information indicating whether the production plan can be changed.

[0042] Furthermore, in a configuration in which the parts required quantity comparison unit 19 calculates the maximum increase in production quantity of each product based on the supplier inventory quantity when it determines that the production plan cannot be changed, the parts required quantity comparison information output in step S20 includes maximum increase in production quantity information indicating the maximum increase in production quantity of each product.

[0043] According to the production plan creation support device 1 of the embodiment, product groups having a certain ratio or more of common parts are automatically generated, and part requirement quantity comparison information for each product group is generated and output, thereby reducing the workload of creating product groups having common parts and supporting changes to the production plan.

[0044] In the above embodiment, the unit period for the required quantity and supplier inventory of each part in the part required quantity comparison information is one month, but the unit period is not limited to this and may be, for example, half a month or one week.

[0045] The hardware configuration of the production plan creation support device 1 will be described with reference to Fig. 11. As shown in Fig. 11, the production plan creation support device 1 includes a temporary storage unit 101, a storage unit 102, a calculation unit 103, an input unit 104, a transmission / reception unit 105, and a display unit 106. The temporary storage unit 101, the storage unit 102, the input unit 104, the transmission / reception unit 105, and the display unit 106 are all connected to the calculation unit 103 via a BUS.

[0046] The calculation unit 103 is, for example, a CPU (Central Processing Unit). The calculation unit 103 executes the processes of the product group generation unit 15, the parts procurement information association unit 16, the parts requirement calculation unit 17, and the parts requirement comparison unit 19 in accordance with the control program stored in the storage unit 102.

[0047] The temporary storage unit 101 is, for example, a random-access memory (RAM). The temporary storage unit 101 loads a control program stored in the storage unit 102 and is used as a working area for the calculation unit 103.

[0048] 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 production plan creation support device 1, and also supplies data stored by this program to the calculation unit 103 according to an instruction from the calculation unit 103, and stores the data supplied from the calculation unit 103. The part requirement information storage unit 18 is configured in the storage unit 102.

[0049] 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 a user is supplied to the calculation unit 103 via the input unit 104. In a configuration in which a user inputs production plan information to the production plan information acquisition unit 13, the input unit 104 functions as the production plan information acquisition unit 13.

[0050] The transmitting / receiving unit 105 is a network termination device or a wireless communication device that connects to the network, and a serial interface or a LAN (Local Area Network) interface that connects to them. The transmitting / receiving unit 105 functions as the parts configuration master acquisition unit 11, the parts procurement information acquisition unit 12, the production plan information acquisition unit 13, and the parts inventory information acquisition unit 14. In addition, in a configuration in which the parts required quantity comparison unit 19 transmits the parts required quantity comparison information to a terminal used by a user, the transmitting / receiving unit 105 functions as the parts required quantity comparison unit 19.

[0051] Display unit 106 is a display device such as an LCD (Liquid Crystal Display), an organic EL (electroluminescence) display, etc. Display unit 106 functions as part requirement comparison unit 19 in a configuration in which part requirement comparison unit 19 displays part requirement comparison information on a screen.

[0052] The processing of parts configuration master acquisition unit 11, parts procurement information acquisition unit 12, production plan information acquisition unit 13, parts inventory information acquisition unit 14, product group generation unit 15, parts procurement information correspondence unit 16, parts required quantity calculation unit 17 and parts required quantity comparison unit 19 of production plan creation support device 1 shown in FIG. 1 is executed by a control program using temporary storage unit 101, calculation unit 103, storage unit 102, input unit 104, transmission / reception unit 105, display unit 106, etc. as resources.

[0053] Additionally, the above hardware configuration and flowchart are merely examples and can be changed or modified as desired.

[0054] The core parts of the production plan creation support device 1, such as the calculation unit 103, the temporary storage unit 101, the storage unit 102, the input unit 104, the transmission / reception unit 105, and the display unit 106, can be realized by using a normal computer system, not a dedicated system. For example, the production plan creation support device 1 that executes the above-mentioned processes may be configured by storing and distributing a computer-readable recording medium such as a flexible disk, a CD-ROM (Compact Disc - Read Only Memory), or a DVD-ROM (Digital Versatile Disc - Read Only Memory) and installing the computer program on a computer. Also, the production plan creation support device 1 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 normal computer system.

[0055] In addition, when the functions of the production plan creation support device 1 are realized by sharing the functions of 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 in a recording medium or storage device.

[0056] It is also possible to superimpose a computer program on a carrier 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 the OS in the same way as other application programs, thereby enabling the above-mentioned processing to be performed.

[0057] In addition, various embodiments and modifications of the present disclosure are possible without departing from the broad spirit and scope of the present disclosure. The above-described embodiments are for explaining the present disclosure and do not limit the scope of the present disclosure. That is, the scope of the present disclosure is indicated by the claims, not the embodiments. Various modifications made within the scope of the claims and the scope of the disclosure equivalent thereto are considered to be within the scope of the present disclosure.

[0058] This application is based on Japanese Patent Application No. 2022-44506, filed on March 18, 2022. The entire specification, claims, and drawings of Japanese Patent Application No. 2022-44506 are incorporated herein by reference. [Explanation of symbols]

[0059] 1 Production plan creation support device, 2 Parts configuration master memory unit, 3 Parts procurement information memory unit, 4 Production plan information memory unit, 5 Parts inventory information memory unit, 11 Parts configuration master acquisition unit, 12 Parts procurement information acquisition unit, 13 Production plan information acquisition unit, 14 Parts inventory information acquisition unit, 15 Product group generation unit, 16 Parts procurement information matching unit, 17 Parts requirements calculation unit, 18 Parts requirements information memory unit, 19 Parts requirements comparison unit, 101 Temporary memory unit, 102 Memory unit, 103 Calculation unit, 104 Input unit, 105 Transmission / reception unit, 106 Display unit.

Claims

1. A production planning support device for supporting changes to a product production plan, a product group generating unit that generates product groups each having a certain ratio or more of common parts based on a parts configuration master that indicates the parts configuration of the product, and generates product group information that indicates the generated product groups; a parts procurement information correlating unit for generating product group parts procurement information by correlating parts procurement information related to procurement of parts with the product group information; a parts requirement calculation unit that calculates a part requirement for each of the product groups based on production plan information indicating a production plan for a product, the parts configuration master, and the product group parts procurement information, and generates parts requirement information indicating the part requirement for each of the product groups; a part requirement information storage unit that stores the part requirement information generated by the part requirement calculation unit; a parts requirement comparison unit which compares parts inventory information indicating the inventory amount of parts at the supplier for each product group with the currently generated parts requirement information and the previously generated parts requirement information, and generates and outputs parts requirement comparison information indicating the comparison result; A production planning support device comprising:

2. The part requirement comparison information includes, for each of the product groups, information for identifying parts, part type indicating whether the part is a common part or a dedicated part, requirement per unit period, increase / decrease from the previous time, which is a value obtained by subtracting the currently calculated part requirement from the previously calculated part requirement, and supplier inventory, which is the supplier's inventory of parts per unit period.

2. The production planning support device according to claim 1.

3. the part requirement comparison unit compares, for each of the parts, the increase or decrease from the previous time with the supplier inventory amount based on the part requirement comparison information, and determines that the changed production plan is executable if the supplier inventory amount is greater than the increase or decrease from the previous time, and determines that the changed production plan is not executable if the supplier inventory amount is less than the increase or decrease from the previous time, and outputs changeability information indicating whether the production plan can be changed together with the part requirement comparison information. The production planning support device according to claim 2.

4. When it is determined that the changed production plan is not executable, the part requirement comparison unit calculates the maximum quantity that can be increased for each product based on the supplier inventory amount, and outputs maximum increase quantity information indicating the maximum increase quantity for each product together with the part requirement comparison information.

4. The production planning support device according to claim 3.

5. A production planning support method executed by a production planning support device that supports changes to a product production plan, comprising: Based on a parts configuration master indicating the parts configuration of the product, a product group having a certain ratio or more of common parts is generated, and product group information indicating the generated product group is generated; generating product group parts procurement information by associating parts procurement information relating to procurement of parts with the product group information; calculating a required quantity of parts for each of the product groups based on production plan information indicating a production plan for a product, the parts configuration master, and the product group parts procurement information, and generating part requirement information indicating the required quantity of parts for each of the product groups; comparing parts inventory information indicating the inventory amount of parts at the supplier for each product group with the currently generated parts requirements information and the previously generated parts requirements information, and generating and outputting parts requirements comparison information indicating the comparison result; A method to support production planning.

6. A computer that supports changes to product production plans, a product group generating unit that generates product groups each having a certain ratio or more of common parts based on a parts configuration master indicating the parts configuration of the product, and generates product group information indicating the generated product groups; a parts procurement information correlating unit for generating product group parts procurement information by correlating parts procurement information relating to procurement of parts with the product group information; a parts requirement calculation unit that calculates a part requirement for each of the product groups based on production plan information indicating a production plan for a product, the parts configuration master, and the product group parts procurement information, and generates parts requirement information indicating the part requirement for each of the product groups; and a parts requirement comparison unit which compares parts inventory information indicating the inventory amount of parts at the supplier for each of the product groups with the currently generated parts requirement information and the previously generated parts requirement information, and generates and outputs parts requirement comparison information indicating the comparison result; A program that functions as a

Images