Product production management system and product production management method

Abstract

Disclosed is a product production management system capable of predicting whether a product delivery will be delayed due to occurrence of a product defect, and if a delivery delay is predicted, enabling a delivery deadline to be met, or at least minimizing the delivery delay. Specifically, the present invention proposes a product production management system comprising: a defect determination unit for determining a defect of a product; a delay determination unit for receiving a defect type of the product from the defect determination unit, and predicting a defective product production completion time and a time required for repair according to the defect type, thereby determining whether a product delivery will be satisfied; and a production planning unit for, when the delay determination unit determines that the product delivery will not be satisfied, searching for a changeable schedule in a product production schedule, searching for an identical product production schedule in the changeable schedule, and if an identical product production schedule exists, designating the identical product production schedule as a highest priority schedule in the changeable schedule.

Description

Product production management system and product production management method

[0001] The present invention relates to a product production management system and a product production management method, and more particularly, to a product production management system and method capable of predicting a delay in a delivery date (delivery date) due to a product defect and flexibly responding to a delivery delay.

[0002]

[0003] During production, product defects may occur, necessitating repairs, which could result in missed delivery dates. In such cases, a production management system is required that can adjust production plans to meet deadlines, or at least minimize delays.

[0004]

[0005] The matters described as background technology above are only intended to enhance understanding of the background of the present invention, and should not be taken as an admission that they correspond to prior art already known to those of ordinary skill in the art.

[0006]

[0007] The present invention aims to provide a product production management system and a product production management method that can meet the delivery date or at least minimize the delivery delay when a delivery delay is predicted.

[0008]

[0009] In order to achieve the above object, the product production management system according to the present invention includes: a defect determination unit that determines whether a product is defective; a delay determination unit that receives the type of defect in the product from the defect determination unit, predicts the repair time required according to the type of defect and the time of completion of defective product production, and determines whether the product delivery date is satisfied; and a production planning unit that, when the delay determination unit determines that the product delivery date will be unsatisfactory, searches for a changeable schedule within a product production schedule, searches for a production schedule for the same product within the changeable schedule, and, if a production schedule for the same product exists, designates the production schedule for the same product as the highest priority schedule within the changeable schedule.

[0010] The defect judgment unit classifies product defect types into new defects and existing defects. When a new defect occurs, the defect judgment unit predicts the repair time. The delay judgment unit predicts the completion time of defective product production based on the repair time predicted by the defect judgment unit and determines whether the product delivery date has been met.

[0011] The delay judgment unit can learn the time required for repair for each type of product defect and predict the repair time for each type of defect.

[0012] ERP system; further includes, the delay judgment unit receives product production plan information from the ERP system, and if the defective product production completion time calculated by adding the repair time according to the defect type to the product completion time included in the product production plan information is later than the product delivery date, the product delivery date can be judged to be unsatisfactory.

[0013] Product production schedules may include flexible schedules (Build to Stock, BTS) and non-flexible schedules (Build to Order, BTO).

[0014] If there is a production schedule for the same product in the changeable schedule, the production planning department determines whether the product delivery date can be met or the delivery delay can be alleviated by designating the production schedule for the same product as the highest priority schedule in the changeable schedule. If it is determined that the product delivery date can be met or the delivery delay can be alleviated, the production schedule can be designated as the highest priority schedule in the changeable schedule.

[0015] If the production schedule for the same product is designated as the highest priority schedule within the changeable schedule, the production planning department can designate other changeable schedules as lower priority schedules.

[0016] ERP system; and if there is no identical product production schedule within the changeable schedule, the production planning department can receive information on the inventory of parts required for product production from the ERP system and determine whether the identical product can be produced.

[0017] If it is determined that the production of the same product is possible, the production planning department creates a production schedule for the product and can designate the production schedule for the product as the highest priority schedule within the changeable schedule.

[0018] The production planning department determines whether the product delivery date can be met or delays in delivery can be mitigated if the product production schedule is designated as the highest priority schedule within the changeable schedule. If it is determined that the product delivery date can be met or delays in delivery can be mitigated, the production schedule for the product can be designated as the highest priority schedule within the changeable schedule.

[0019] If it is determined that production of the same product is impossible, the production planning department receives information on the supply and demand of parts required for product production from the ERP system and determines when production of the same product can be completed. If it is determined that the product delivery date can be met or delays in delivery can be alleviated by comparing it to the completion date of production of a defective product, a production schedule for the product can be created.

[0020] The production schedule for the product created by the production planning department may be set to start production of the product based on the earliest possible time point when parts required for production of the product are expected to be procured.

[0021]

[0022] A product production management method according to the present invention includes a step in which a defect determination unit determines whether a product is defective; a step in which a delay determination unit predicts a repair time required according to a defect type and a defective product production completion time to determine whether a product delivery date is satisfied; and a step in which, if the product delivery date is determined to be unsatisfactory, a production planning unit searches for a changeable schedule within a product production schedule, searches for a production schedule for the same product within the changeable schedule, and, if a production schedule for the same product exists, designates the production schedule for the same product as the highest priority schedule within the changeable schedule.

[0023] If there is no production schedule for the same product, the production planning department may further include a step of receiving information on the inventory of parts required for product production from the ERP system and determining whether production of the same product is possible; if it is determined that production of the same product is possible, the production planning department may designate the production schedule for the product as the highest priority schedule within a changeable schedule; if it is determined that the product delivery date can be met or a delay in delivery can be alleviated, the production planning department may further include a step of designating the production schedule for the product as the highest priority schedule within a changeable schedule;

[0024] If there is no production schedule for the same product, the production planning department may further include a step of receiving information on the inventory of parts required for product production from the ERP system and determining whether production of the same product is possible; if it is determined that production of the same product is impossible, the production planning department may further include a step of receiving information on the supply and demand of parts required for product production from the ERP system and determining when production of the same product can be completed, and comparing it with the completion time of production of a defective product to determine whether the product delivery date can be met or a delivery delay can be alleviated; if it is determined that the product delivery date can be met or a delivery delay can be alleviated, a step of the production planning department creating a production schedule for the corresponding product.

[0025] The production schedule for the product created by the production planning department may be set to start production of the product based on the earliest possible time point when parts required for production of the product are expected to be procured.

[0026]

[0027] According to the product production management system and product production management method of the present invention, it is possible to predict whether or not a product delivery delay will occur due to the occurrence of a product defect, and if a delivery delay is predicted, it is possible to ensure that the delivery date is met or at least the delivery delay is minimized.

[0028]

[0029] Figure 1 is a block diagram of a product production management system according to one embodiment of the present invention.

[0030] Figures 2 to 5 illustrate examples of product production schedules.

[0031] Figure 6 is a flowchart of a product production management method according to one embodiment of the present invention.

[0032]

[0033] Hereinafter, embodiments disclosed in this specification will be described in detail with reference to the attached drawings. Regardless of the drawing numbers, identical or similar components will be given the same reference numbers and redundant descriptions thereof will be omitted.

[0034] In describing the embodiments disclosed in this specification, detailed descriptions of related known technologies will be omitted if it is determined that such detailed descriptions may obscure the gist of the embodiments disclosed in this specification. In addition, the attached drawings are provided solely to facilitate understanding of the embodiments disclosed in this specification, and the technical concepts disclosed in this specification are not limited by the attached drawings, and should be understood to include all modifications, equivalents, and substitutes included within the spirit and technical scope of the present invention.

[0035] Terms that include ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by these terms. These terms are used solely to distinguish one component from another.

[0036] Singular expressions include plural expressions unless the context clearly indicates otherwise.

[0037] In this specification, it should be understood that terms such as “include” or “have” are intended to specify the presence of a feature, number, step, operation, component, or combination thereof described in the specification, but do not preclude the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, or combinations thereof.

[0038] The suffixes "module" and "part" used for components in the following description are given or used interchangeably only for the convenience of writing specifications, and do not have distinct meanings or roles in themselves.

[0039] When a component is referred to as being "connected" or "connected" to another component, it should be understood that it may be directly connected or connected to that other component, but that there may be other components intervening. Conversely, when a component is referred to as being "directly connected" or "connected" to another component, it should be understood that there are no other components intervening.

[0040] The defect judgment unit, delay judgment unit, production planning unit, and ERP system may include a communication device that communicates with other controllers or sensors to control the functions in charge, a memory that stores operating system or logic commands and input / output information, and one or more processors that perform judgments, calculations, decisions, etc. necessary for controlling the functions in charge.

[0041] Additionally, the term “product” in this specification means all things that can be produced through production activities, as well as means of transportation such as vehicles and airplanes.

[0042]

[0043] Figure 1 is a block diagram of a product production management system according to one embodiment of the present invention.

[0044] Referring to FIG. 1, the product production management system according to the present invention includes a defect determination unit (100) that determines whether a product is defective; a delay determination unit (300) that receives the type of defect in the product from the defect determination unit (100) and predicts the repair time required and the completion time of defective product production according to the type of defect to determine whether the product delivery date is satisfied; and a production planning unit (500) that searches for a changeable schedule within a product production schedule, searches for a production schedule for the same product within the changeable schedule, and, if a production schedule for the same product exists, designates the production schedule for the same product as the highest priority schedule within the changeable schedule.

[0045] Specifically, the defect determination unit (100) can determine the type of defect in the product. For example, a defect in a product may include, for example, a case where reassembly of parts necessary for simple product production is required (repair time within 5 minutes), a case where replacement or reassembly of parts inside the bumper is required (repair time within 5 to 10 minutes), a replacement of the windshield glass (within 10 to 30 minutes), and a product failure in starting (repair time of 30 minutes or more).

[0046] The defect determination unit (100) can determine the type of defect as described above, and can determine whether the defect is a previously experienced type of defect or a newly occurring type of defect. When a defect occurs in a product, the defect determination unit (100) can transmit the type of defect to the delay determination unit (300).

[0047] At this time, it can be transmitted directly to the delay judgment unit (300) or through the ERP system (700) described later.

[0048] The delay judgment unit (300) receives the product defect type from the defect judgment unit (100). Then, it predicts the repair time required according to the defect type and, reflecting this, predicts the completion time of production of the defective product after repair, thereby determining whether the product delivery date can be met.

[0049] Specifically, the delay judgment unit (300) can receive information on the expected completion time of product production from the ERP system (700), and can predict the completion time of defective product production by adding the expected repair time to the expected completion time of product production, and can compare this with the product delivery date to determine whether the delivery date can be met.

[0050] In other words, if the defective product production completion time is before the product delivery date, the delivery date can be met, and if the defective product production completion time is after the product delivery date, the delivery date cannot be met, so a delivery delay can be seen as occurring.

[0051] If the product defect is minor or there's ample time left until the delivery date, repairs can be performed without any changes to the plan. However, if the product defect is serious or the delivery date is tight, a plan to meet the deadline through rescheduling the product production schedule or, at the very least, to minimize delays is necessary.

[0052] If the production planning department (500) determines that meeting product delivery deadlines is difficult, it searches for changeable schedules within the product production schedule. Specifically, the production planning department (500) can receive production plan information regarding the product production schedule from the ERP system (700) and search for changeable schedules by searching the received information.

[0053] Regarding product production schedules, some are created based on customer orders, while others are created for the purpose of pre-production, regardless of customer orders, based on sales forecasts. These can be referred to as immutable schedules (BTO, Build to Order) and mutable schedules (BTS, Build to Stock), respectively.

[0054] That is, the production schedule for a product that predicts sales is a changeable schedule because there is no major problem even if the schedule is changed, and the production schedule for a product created by a customer order is usually a schedule that cannot be changed because there is a set delivery date for the product to be delivered to the customer.

[0055] Figure 2 illustrates an example of a product production schedule. Referring to Figure 2, it can be assumed that the product production schedule is as illustrated in Figure 2, according to the chronological order. The product production schedule is composed of an unchangeable schedule (□△○) and a changeable schedule (■▲●). Each shape represents a product.

[0056] Again, if the production planning department (500) determines that it will be difficult to meet the product delivery deadline, it searches for changeable schedules within the product production schedule. Furthermore, it searches for a production schedule for the same product as the defective product within the changeable schedule.

[0057] At this time, as shown in Fig. 2, a schedule for the production of a product with a defective product (○) that is the same as the schedule for production of a product that is changeable (●) can be designated as the highest priority schedule within the changeable schedule.

[0058] That is, the product production schedule can be changed as shown in Fig. 3. Specifically, comparing Figs. 2 and 3, the schedule (■) with the highest priority among the changeable schedules is rescheduled so that it is pushed down to a lower priority, and the changeable schedule (●) with a lower priority is designated as the highest priority.

[0059] If the production schedule of the same product is designated as the highest priority schedule within the changeable schedule, the production planning department (500) designates other changeable schedules as lower priority schedules, and the product production schedule is rescheduled as shown in FIG. 3.

[0060]

[0061] Meanwhile, the delay judgment unit (300) can learn the time required for repairing each type of product defect and predict the repair time for each type. Specifically, based on the results learned by the delay judgment unit (300), a model can be created that predicts the repair time for each product and product defect type, and the repair time for each product and product defect type can be predicted from the model. The model can predict the repair time for each product and product defect type through data mining.

[0062] Specifically, in the case of a product defect classified as an existing defect, the delay judgment unit (300) predicts the time required for repair, but in the case of a product defect classified as a newly occurred defect, the defect judgment unit (100) can predict the time required for repair.

[0063] At this time, the manager of the product production management system can input the predicted repair time into the defect judgment unit (100) based on empirical rules. However, this is merely an example, and even for product defects classified as new defects, the repair time can be predicted using the model generated by the delay judgment unit (300). Furthermore, even for new defects, data can be input for the delay judgment unit (300) to learn later.

[0064] As described above, the delay judgment unit (300) can determine whether the delivery date has been met due to the occurrence of a product defect.

[0065] More specifically, the product production management system can receive product production plan information from the ERP system (700) (Enterprise Resource Planning System), and the product production plan information includes information regarding the expected product completion time.

[0066] Accordingly, the delay judgment unit (300) can calculate the completion time of defective product production by adding the repair time according to the type of defect to the expected product completion time, and can compare the completion time of defective product production with the product delivery date to determine whether the delivery date has been met.

[0067]

[0068] Meanwhile, rescheduling can be performed by the production planning department (500), but it is necessary to determine whether the product delivery date can be satisfied as a result of the rescheduling, or at least whether the delivery delay can be alleviated.

[0069] Accordingly, the production planning department (500) determines whether designating a production schedule for the same product as the highest priority schedule within the changeable schedule will satisfy the product delivery deadline or mitigate any delay in delivery. If it is determined that the schedule can satisfy the product delivery deadline or mitigate any delay in delivery, the production schedule can be designated as the highest priority schedule within the changeable schedule.

[0070] Whether the delivery date can be met is determined by whether the product production can be completed within the product delivery date when the same product production schedule is designated as the highest priority schedule. If it is determined that the product production can be completed within the product delivery date, the production planning department (500) can designate the production schedule as the highest priority schedule within the changeable schedule.

[0071] If it is determined that production within the delivery date is impossible even if the same product's production schedule is designated as the highest priority schedule, determine whether the delivery delay can be mitigated. Mitigation of the delivery delay is determined by comparing the expected completion date of the product with the completion date of the defective product when the same product's production schedule is designated as the highest priority schedule.

[0072] If the completion time of production of defective products is later, it is judged that the delay in delivery can be alleviated, and the production planning department (500) can designate the production schedule as the highest priority schedule within the changeable schedule.

[0073] If it is determined that it is impossible to produce a product within the delivery date and that it is impossible to alleviate the delay in delivery, the production planning department (500) enables product defect repair to be performed without rescheduling.

[0074]

[0075] Meanwhile, there may not be a production schedule for the same product within a changeable schedule. That is, referring to Fig. 4, there may not be a production schedule for the same product (●) within a changeable schedule (■▲●).

[0076] In such cases, the production planning department (500) can receive information on the inventory of parts required for product production from the ERP system (700) and determine whether production of the same product is possible. That is, information on whether there is inventory surplus of parts required for production of the same product (●) is received from the ERP system (700) and determine whether production of the same product (●) is possible within a short period of time.

[0077] If it is determined that the production of the same product is possible due to the availability of spare parts required for product production, the production planning department (500) can create a production schedule for the product. Furthermore, the production schedule for the product can be designated as the highest priority schedule within the changeable schedule.

[0078] That is, as shown in Fig. 5, a new production schedule for the same product (●) is created, and the schedule can be designated as the highest priority schedule within the changeable schedule by the production planning department (500).

[0079]

[0080] Meanwhile, rescheduling can be performed by the production planning department (500), but it is necessary to determine whether the product delivery date can be satisfied as a result of the rescheduling, or at least whether the delivery delay can be alleviated.

[0081] When the production planning department (500) designates the production schedule of the product in question as the highest priority schedule within the changeable schedule, it determines whether the product delivery date can be met or relaxed, and if it is determined that the product delivery date can be met or relaxed, it can designate the production schedule of the product in question as the highest priority schedule within the changeable schedule.

[0082] The judgment on whether the delivery date is met and whether the delivery delay is alleviated is as described above.

[0083]

[0084] On the other hand, in a case where it is determined that production of the same product is impossible due to a lack of spare parts in stock required for product production, the production planning department (500) receives information on the supply and demand of parts required for product production from the ERP system (700) and determines when production of the same product can be completed. If it is determined that the product delivery date can be satisfied or alleviated by comparing it with the completion time of production of a defective product, a production schedule for the product can be created.

[0085] Specifically, if there is no spare stock of parts required for product production, and it is impossible to produce the same product in a short period of time, the production planning department (500) receives information from the ERP system (700) about the time when the parts required for product production are procured, and can use the information to determine the time when production of the same product can be completed.

[0086] Here, the production planning department (500) determines the start time of production of the product as the earliest time point at which the parts required for production of the product are expected to be procured, and can determine the possible completion time of production of the same product.

[0087] If it is determined that the time when the production of the same product can be completed is before the delivery date, so that the delivery date can be met, or even if the delivery date is not met, it is before the time when the production of a defective product is completed, so that the delay in delivery can be alleviated, the production planning department (500) can create a production schedule for the product.

[0088]

[0089] Figure 6 is a flowchart of a product production management method according to one embodiment of the present invention.

[0090] Referring to FIG. 6, the product production management method according to the present invention includes a step (S101) in which a defect determination unit determines whether a product is defective; a step (S201) in which a delay determination unit predicts a repair time required according to a defect type and a defective product production completion time to determine whether the product delivery date is satisfied; and a step (S300) in which, if the product delivery date is determined to be unsatisfactory, a production planning unit searches for a changeable schedule in a product production schedule, searches for a production schedule for the same product in the changeable schedule, and, if a production schedule for the same product exists, designates the production schedule for the same product as the highest priority schedule in the changeable schedule.

[0091] Specifically, if the delay judgment department determines that the product delivery date will be unsatisfactory, the production planning department searches for a changeable schedule within the product production schedule (S301), searches for a production schedule for the same product within the changeable schedule (S302), and, if a production schedule for the same product exists, designates the production schedule for the same product as the highest priority schedule within the changeable schedule (S304).

[0092] At this time, the production planning department (500) can determine (S03) whether the product delivery date can be met or the delivery delay can be alleviated if the same product production schedule is designated as the highest priority schedule within the changeable schedule, and if the product delivery date can be met or the delivery delay can be alleviated, the same product production schedule can be designated as the highest priority schedule within the changeable schedule (S304).

[0093] If there is no production schedule for the same product, the production planning department may further include a step (S401) of receiving information on the inventory of parts required for product production from the ERP system and determining whether production of the same product is possible; if it is determined that production of the same product is possible, a step (S402) of determining whether the product delivery date can be met or relaxed if the production planning department designates the corresponding product production schedule as the highest priority schedule within the changeable schedule; if it is determined that the product delivery date can be met or relaxed, a step (S403) of determining the corresponding product production schedule as the highest priority schedule within the changeable schedule.

[0094] If there is no production schedule for the same product, the production planning department may further include a step (S501) of receiving information on the inventory of parts required for product production from the ERP system and determining whether production of the same product is possible; if it is determined that production of the same product is impossible, the production planning department may further include a step (S502) of receiving information on the supply and demand of parts required for product production from the ERP system and determining when production of the same product can be completed, and comparing it with the completion time of production of a defective product to determine whether the product delivery date can be met or relaxed; if it is determined that the product delivery date can be met or relaxed, a step (S503) of the production planning department creating a production schedule for the corresponding product.

[0095] The production schedule for the product created by the production planning department may be set to start production of the product based on the earliest possible time point when parts required for production of the product are expected to be procured.

[0096]

[0097] Although the present invention has been illustrated and described with respect to specific embodiments thereof, it will be apparent to those skilled in the art that the present invention may be variously improved and modified without departing from the technical spirit of the invention as defined by the following claims.

[0098]

[0099] [Explanation of symbols]

[0100] 100: Defective judgment department

[0101] 300: Delay judgment department

[0102] 500: Production Planning Department

[0103] 700: ERP system

Claims

1. Defect judgment department that determines whether the product is defective; A delay judgment unit that receives the type of product defect from the defect judgment unit and predicts the repair time and the completion time of defective product production according to the type of defect to determine whether the product delivery date is satisfied; and A product production management system including a production planning department that searches for a changeable schedule within a product production schedule when a delay judgment department determines that a product delivery date will be unsatisfactory, searches for an identical product production schedule within the changeable schedule, and, if an identical product production schedule exists, designates the identical product production schedule as the highest priority schedule within the changeable schedule.

2. In claim 1, The defect judgment department divides the types of product defects into new defects and existing defects, and when a new defect occurs, the defect judgment department predicts the repair time. A product production management system characterized in that the delay judgment unit predicts the completion time of defective product production based on the repair time predicted by the defect judgment unit and determines whether the product delivery date has been met.

3. In claim 1, A product production management system characterized by having a delay judgment unit that learns the time required for repair by type of product defect and predicts the repair time required by type of defect.

4. In claim 1, ERP system; including; The delay judgment department receives product production plan information from the ERP system. If the completion time of defective product production, calculated by adding the repair time according to the type of defect to the expected product completion time included in the product production plan information, is later than the product delivery date, A product production management system characterized by determining that the product delivery date is unsatisfactory.

5. In claim 1, A product production management system characterized in that the product production schedule includes a changeable schedule (BTS, Build to Stock) and an unchangeable schedule (BTO, Build to Order).

6. In claim 5, If there is an identical product production schedule in the changeable schedule, the production planning department determines whether the product delivery date can be met or the delivery delay can be alleviated by designating the identical product production schedule as the highest priority schedule in the changeable schedule. A product production management system characterized by designating a production schedule as the highest priority schedule within a changeable schedule when it is determined that the product delivery date can be satisfied or a delivery delay can be alleviated.

7. In claim 1, A product production management system characterized in that when the production schedule of the same product is designated as the highest priority schedule within the changeable schedules, the production planning department designates other changeable schedules as lower priority schedules.

8. In claim 1, ERP system; including; If there is no production schedule for the same product within the changeable schedule, The production planning department is a product production management system that receives information on inventory of parts required for product production from the ERP system and determines whether the same product can be produced.

9. In claim 8, If it is determined that production of the same product is possible, A product production management system characterized by having the production planning department create a production schedule for the product in question and designate the production schedule for the product in question as the highest priority schedule within a changeable schedule.

10. In claim 9, The production planning department determines whether the product delivery date can be met or delays in delivery can be alleviated by designating the product production schedule as the highest priority schedule within the changeable schedule. A product production management system characterized by designating a product production schedule as the highest priority schedule within a changeable schedule when it is determined that the product delivery date can be satisfied or a delivery delay can be alleviated.

11. In claim 8, If it is determined that production of the same product is impossible, The production planning department receives information on the supply of parts required for product production from the ERP system and determines the time when the same product can be produced. If it is determined that the product delivery date can be met or delays in delivery can be alleviated by comparing it to the time when defective products are produced, A product production management system characterized by generating a production schedule for the product.

12. In claim 11, A product production management system characterized in that the production schedule for the product created by the production planning department sets the earliest point in time at which the parts required for the production of the product are expected to be procured as the start point of production of the product.

13. The stage where the defect judgment department determines whether the product is defective; A step in which the delay judgment unit predicts the repair time required according to the type of defect and the completion time of defective product production to determine whether the product delivery date is satisfied; and A product production management method, comprising: a step of the production planning department searching for a changeable schedule within the product production schedule, searching for an identical product production schedule within the changeable schedule, and, if an identical product production schedule exists, designating the identical product production schedule as the highest priority schedule within the changeable schedule; 14. In claim 13, If there is no production schedule for the same product, The production planning department receives information on the inventory of parts required for product production from the ERP system and determines whether the same product can be produced; If it is determined that production of the same product is possible, the production planning department designates the production schedule of the product as the highest priority schedule within the changeable schedule, and then determines whether the product delivery date can be met or delays in delivery can be alleviated; A product production management method characterized by further including a step of the production planning department designating the product production schedule as the highest priority schedule within the changeable schedule when it is determined that the product delivery date can be satisfied or a delivery delay can be alleviated.

15. In claim 13, If there is no production schedule for the same product, The production planning department receives information on the inventory of parts required for product production from the ERP system and determines whether the same product can be produced; If it is determined that production of the same product is impossible, The production planning department receives information on the supply and demand of parts required for product production from the ERP system, determines when the same product can be produced, and compares this with the completion time of defective product production to determine whether the product delivery date can be met or delays in delivery can be alleviated. A product production management method characterized by further including a step of the production planning department generating a production schedule for the product when it is determined that the product delivery date can be satisfied or a delivery delay can be alleviated.

16. In claim 15, A product production management method characterized in that the production schedule for the product created by the production planning department sets the earliest point in time at which the parts required for the production of the product are expected to be procured as the start point of the production of the product.

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