JP2007004670A - Part procurement system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To adequately keep the inventory quantities of parts in a product manufacturing factory, a primary part supplier factory and a secondary part supplier factory in a module production system. <P>SOLUTION: The product manufacturing factory 1 manufactures a product. The primary part supplier factory 3 manufactures module parts used for manufacturing the product. The secondary part supplier factory 9 manufactures components used for manufacturing the module parts. A part ordering device set in the product manufacturing factory 1 calculates an order quantity of module parts based on a production plan of the product, and transmits order information showing order of the calculated order quantity of module parts to the primary part supplier factory 3 via a communication network 15. The part ordering device calculates an order quantity of components based on the production plan of the product, and transmits order information showing order of the calculated order quantity of components to the secondary part supplier factory via the communication network 15. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to parts management such as ordering, distribution management, quality management, cost management, drawing management, etc. for parts constituting a product, and more particularly to a parts procurement system for procuring parts in a module production system.

  FIG. 8 is a diagram showing a conventional production system for products such as automobiles. As shown in FIG. 8, in the conventional production method, the product production factory 1 ′ procures parts 605 from the primary parts supplier factory 3 ′, and each part 605 is obtained in each process 603 of the production line. Assemble and complete as a product. In such a production system, there are two systems in which the product production factory 1 'procures the parts 605 from the primary parts supplier factory 3': a post-replenishment system and a planned ordering system. Hereinafter, these conventional parts procurement methods will be described with reference to FIG.

  In the post-replenishment method, the product production factory 1 ′ has a large number of primary parts supplier factories 3 ′, 5 ′, 7 ′,... ) Through the communication network 15 '. When “Kanban” is issued, at the primary parts supplier factory 3 ′, etc., the type of parts designated by “Kanban” is the same as the number of parts designated by “Kanban” together with “Kanban”. Delivered to trucks. In the product production factory 1 ′, when the delivered parts are used, the “kanban” is removed and collected. Then, the collected “kanban” is issued again to the primary parts supplier factory 3 ′, etc., and the above-described circulation is repeated thereafter. In this way, in the post-replenishment method, a chain in which only parts used at the product production factory 1 ′ are ordered and parts only used are re-supplied is continued.

  However, in many types and large quantities of repetitive production such as automobiles, even if some types of parts are replenished later, the time until the next production time is lost and the inventory period becomes longer. A situation occurs.

  Therefore, in this case, a planned ordering method is used. In this planned ordering method, the product production factory 1 'draws up a production plan, calculates in advance the amount of each part necessary to achieve this production plan, and based on this pre-determined information, Parts are ordered from the parts supplier factory 3 '. Specifically, the product production factory 1 'drafts a production plan for the next day and subsequent products once a day and, based on this production plan, orders the quantity of parts required to achieve the plan several times a day. The calculated order quantity is converted into the number of ordering instruction cards (that is, the number of kanban boards) and placed in the previous process (primary parts supplier factory 3 ′ etc.).

JP 2002-207507 A JP 2002-324144 A JP-A-7-28910

  Incidentally, for example, manufacturers that produce and sell automobiles have come to take measures to reduce the types of parts by sharing parts in order to further reduce costs. For this reason, it is effective to modularize parts, and to use the labor force of the parts manufacturer to reduce the cost of the company. Therefore, modules have been produced by the parts manufacturers. This leads to an increase in added value because the same component is used for various products. Moreover, such a module production system can be realized by IT.

  Here, the above-described module production method will be described below by taking an automobile as an example. In the module production method, as shown in FIG. 10, some parts of the product are not assembled in the product production factory 1 ′, but are assembled in advance to the assembly (module) in the primary parts supplier factory 3 ′. The module is delivered to the product production factory 1 'and assembled in the product production line process. More specifically, in the module production method, the secondary parts supplier factory 9 'produces module components and delivers them to the primary parts supplier factory 3'. The primary part supplier factory 3 'uses a plurality of module components to produce module parts and delivers the module parts to the product production factory 1'. The product production factory 1 'produces a product by assembling a plurality of module parts to a workpiece.

  The component configuration in the module production system will be described with a specific example while comparing with the conventional one. In the conventional production method, the product is configured as shown in FIG. 11, and these parts (part number: 11000-17000) are ordered from the primary parts supplier factory 3 '. On the other hand, in the module production, the product parts are configured as shown in FIG. 12. For example, the primary part supplier factory 3 ′ produces a module part (part number: 10000) called a door module from the product production factory 1 ′. This module part will be ordered. The component parts (part number: 11000-17000) of the module parts are delivered from the secondary parts supplier factory 9 'to the primary parts supplier factory 3'.

  In such a module production system, it is desirable to properly maintain the inventory amount of parts at the product production factory, the primary parts supplier factory, and the secondary parts supplier factory. However, the above-described conventional parts procurement method does not take into account the secondary parts supplier factory at all, and thus cannot meet the above demand.

  Therefore, the present invention provides a parts procurement system capable of appropriately maintaining the inventory amount of parts in a product production factory, a primary parts supplier factory, and a secondary parts supplier factory in a module production system. To do.

  The parts procurement system according to the present invention includes a parts ordering apparatus installed in a product production factory that produces products, and module parts installed in a primary parts supplier factory that produces module parts used in product production. The system has an order receiving device and a component order receiving device installed in a secondary parts supplier factory that produces component parts used for the production of module parts. The parts ordering device is a module based on a product production plan. Calculates the order quantity of the parts, sends module part ordering information indicating the order of module parts of the calculated order quantity to the module parts order receiving device via the communication line, and determines the order quantity of the component parts based on the product production plan. The component part ordering information indicating the ordering of the calculated order quantity of the component part is transmitted to the component part order receiving apparatus via the communication line. When receiving the component part ordering information, the order receiving process for delivering the module part to the product production factory is performed based on the module part ordering information. When the component part ordering apparatus receives the component part ordering information, the component part ordering information is received. Based on the above, it is characterized in that the order processing for delivering the component parts to the primary parts supplier factory is performed.

  In a preferred aspect of the present invention, the delivery lead time from when the order is placed until the module part is delivered to the product production factory is T1, and after the order is placed, the component part is the product via the primary part supplier factory. When the delivery lead time until delivery to the production plant is T2, the parts ordering device will use the module parts at the time after the delivery lead time T1, based on the product production plan at the time after the delivery lead time T1. The quantity is calculated as the order quantity of the module parts, and the planned use quantity of the component parts after the delivery lead time T2 is calculated as the order quantity of the component parts based on the product production plan after the delivery lead time T2. .

  Also, in a preferred aspect of the present invention, a module part defective product number input device that is installed in a product production factory and accepts input of the number of defective module parts found in the product production factory, and installed in a primary part supplier factory. And a component part defect number input device that accepts an input of the number of defective components found in the primary part supplier factory, and the part ordering device is input to the module part defect number input device Obtains the number of defective module parts, calculates the order quantity of module parts based on the product production plan and the number of defective module parts, and communicates the number of defective component parts input to the component part defect number input device Obtained via the line, the order quantity of the component is calculated based on the product production plan and the number of defective components.

  A parts ordering apparatus according to the present invention is a parts ordering apparatus in a production system in which module parts are produced using component parts and products are produced using module parts, and ordering of module parts is performed based on a production plan of the product. The module is ordered based on the module parts ordering means for instructing the primary parts supplier factory that produces the module parts and the delivery of the module parts of the calculated order quantity to the product production factory. Component ordering means for calculating the order quantity of the parts and instructing the secondary parts supplier factory that produces the component parts to deliver the components of the calculated order quantity to the primary parts supplier factory; It is characterized by having.

  In a preferred aspect of the present invention, the delivery lead time from when the order is placed until the module part is delivered to the product production factory is T1, and after the order is placed, the component part is the product via the primary part supplier factory. When the delivery lead time until delivery to the production plant is T2, the module parts ordering means uses the module parts at the time after the delivery lead time T1 based on the product production plan at the time after the delivery lead time T1. The planned quantity is calculated as the order quantity of the module parts, and the component parts ordering means configures the planned use quantity of the component parts at the time after the delivery lead time T2 based on the product production plan at the time after the delivery lead time T2. Calculated as part order quantity.

  According to a preferred aspect of the present invention, the module part ordering means calculates the order quantity of the module parts based on the product production plan and the number of defective module parts found in the product production factory, and orders the component parts. The means calculates the order quantity of the component parts based on the product production plan and the number of defective components found in the primary parts supplier factory.

  A module parts order receiving apparatus according to the present invention is a module parts order receiving apparatus in a production system in which module parts are produced using component parts and products are produced using module parts, and the module parts are based on a product production plan. The order quantity is calculated, and the delivery of module parts with the calculated order quantity to the product production factory is instructed to the primary parts supplier factory that produces the module parts. Production of products from the parts ordering device that calculates the order quantity and instructs the secondary parts supplier factory that produces the component parts to deliver the component of the calculated order quantity to the primary parts supplier factory Module part ordering information indicating the ordering of module parts of the order quantity calculated based on the plan is received, and the module is sent to the product production factory based on the module part ordering information. And carrying out the order processing in order to deliver the parts.

  A component order receiving device according to the present invention is a component part order receiving device in a production system in which module parts are produced using the component parts and products are produced using the module parts, and the module parts are based on the production plan of the product. The order quantity is calculated, and the delivery of module parts with the calculated order quantity to the product production factory is instructed to the primary parts supplier factory that produces the module parts. Production of products from the parts ordering device that calculates the order quantity and instructs the secondary parts supplier factory that produces the component parts to deliver the component of the calculated order quantity to the primary parts supplier factory Order processing for receiving component part ordering information indicating the ordering of a component of the order quantity calculated based on the plan, and delivering the component part to the primary parts supplier factory based on the component part ordering information And performing.

  According to the present invention, in a module production system, a parts procurement system capable of appropriately maintaining the inventory amount of parts in a product production factory, a primary parts supplier factory, and a secondary parts supplier factory is provided. can do.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[Overall configuration of parts management system]
FIG. 1 is a schematic diagram showing an overall configuration of a parts management system 100 including a parts procurement system according to the present embodiment. The parts management system 100 is used in a so-called module production system, and performs ordering, logistics management, quality management, cost management, drawing management, etc. for parts constituting a product. Here, the module production method is a production method in which module parts are produced using module components and products are produced using module parts. The parts management system 100 can be used in the production of various products, but is preferably used in many types and a large number of repeated productions such as automobiles. Therefore, in the present embodiment, an automobile is taken as an example of a product. Hereinafter, the entire component management system 100 will be schematically described with reference to FIG.

  1, a parts management system 100 includes devices arranged in a product production factory 1, devices arranged in primary parts suppliers factories 3, 5, 7,..., Secondary parts suppliers. Are arranged in factories 9, 11, 13,... And a communication network 15 that connects these devices to each other.

  In the following description, “primary parts supplier factories 3, 5, 7,...” And “secondary parts supplier factories 9, 11, 13,. .., “Secondary parts factory 9, 11, 13,...”. In addition, “primary parts factory 3, 5, 7,...” And “secondary parts factory 9, 11, 13,...” Are respectively referred to as “primary parts factory 3” and “secondary parts factory 9”. Collectively.

  The product production factory 1 is a factory that produces products. The primary parts factory 3 is a factory that produces module parts used for product production in the product production factory 1. The secondary parts factory 9 is a factory that produces module components (hereinafter abbreviated as “components”) used in the production of module parts in the primary parts factory 3.

  In the above configuration, parts are procured as follows. Module part ordering information is transmitted from the product production factory 1 to the primary part factory 3 through the communication network 15, and component part ordering information is transmitted from the product production factory 1 to the secondary part factory 9 through the communication network 15. Then, based on the module part ordering information, the module parts are conveyed from the primary part factory 3 to the product production factory 1 by a truck or the like. Also, the component parts are conveyed from the secondary part factory 9 to the primary part factory 3 by a truck or the like based on the component part ordering information.

  At this time, the timing of ordering module parts from the product production factory 1 to the primary parts factory 3 is determined in consideration of the delivery lead time from the primary parts factory 3 to the product production factory 1. In addition, the timing of ordering component parts from the product production factory 1 to the secondary parts factory 9 is determined in consideration of the delivery lead time from the secondary parts factory 9 to the product production factory 1 via the primary parts factory 3. . For example, as shown in FIG. 2, when the delivery lead time of the module part <11111> is T1, the module part <11111> goes back by the delivery lead time T1 from the time when the module part is used for product production at the product production factory 1. The point in time is the ordering timing for the module part. Further, when the delivery lead times of the component parts <22222> to <88888> are T2 to T8, respectively, the delivery lead times T2 to T8 from the time when each component part is used for product production at the product production factory 1. The point in time that is traced back is the ordering timing for each component.

  Further, in the parts management system 100, in addition to ordering the parts, quality management, cost management (including cost calculation), and drawing management are performed for each of products, module parts, and component parts. Comprehensive parts management is performed.

[Composition of product production factory]
FIG. 3 is a block diagram illustrating a configuration of a system installed in the product production factory 1. Hereinafter, the configuration of a system installed in the product production factory 1 will be described with reference to FIG.

  As shown in FIG. 3, the product production factory 1 is provided with a product management device 227, a production plan planning device 201, an ordering instruction card reading device 205, and an ordering instruction card management device 203. Each of these devices is realized by, for example, a computer system, and each function of each device described below is realized by executing a program stored in a recording medium such as a ROM by a CPU.

  The product management device 227 is a device that performs quality management, cost management, and drawing management for each of products, module parts, and component parts. In FIG. 3, the product management device 227 includes a product quality management unit 231 and a quality management database 233 that perform quality management, a product cost calculation unit 237 and a cost management database 239 that perform cost management, and a product drawing management unit that performs drawing management. 243 and a drawing management database 245.

  The production plan drafting device 201 is a device for drafting a relatively long-term product production plan. Here, the production plan for a vehicle for one month is drafted as a production plan (indicated).

  The order instruction card reader 205 is a device that reads information on an order instruction card (so-called “kanban”) collected from the product production line 225. Here, the ordering instruction card is a card indicating at least a component type and a component quantity. As will be described later, this order instruction card is issued at the primary parts factory 3 and the secondary parts factory 9 according to the ordering information from the product production factory 1, and is attached to the module parts and delivered to the product production factory 1. The When the module part is used in the product production line 225 of the product production factory 1, the order instruction card is removed from the module part, and the order instruction card reader 205 reads the information.

  The ordering instruction card management device (part ordering device) 203 mainly calculates the order quantity of the module parts based on the product production plan, and delivers the module order of the calculated order quantity to the product production factory 1 as the primary part. Based on the module part ordering function for instructing the factory 3 and the production plan of the product, the order quantity of the component parts is calculated, and the delivery of the calculated order quantity of the component parts to the primary part factory 3 is sent to the secondary parts factory 9 A component ordering function for instructing. More specifically, the order instruction card management device 203 calculates the module part order quantity based on the product production plan, and sends module part order information indicating the order of the module part of the calculated order quantity via the communication network 15. Is sent to the primary parts factory 3, and the order quantity of the component parts is calculated based on the product production plan, and the component part order information indicating the order of the component parts of the calculated order quantity is secondary via the communication network 15. It is a device that transmits to the parts factory 9.

  Here, when the delivery lead time from when the order is placed until the module part is delivered to the product production factory 1 is T1, the ordering instruction card management device 203 makes the product production plan at the time after the delivery lead time T1. Based on this, the planned usage amount of the module part at the time after the delivery lead time T1 is calculated as the order quantity of the module part. Accordingly, the module part ordering timing is a time point (t1-T1) that is back by the delivery lead time T1 from the time point t1 when the module part is used for production of the product. Further, the order quantity of the module parts in the order at the time point (t1-T1) is the expected use amount of the module parts at the time point t1.

  Similarly, when the delivery lead time from when the order is placed until the component is delivered to the product production factory 1 via the primary part factory 3 is T2, the ordering instruction card management device 203 uses the delivery lead time T2. Based on the production plan of the product at a later time, the planned use amount of the component at the time after the delivery lead time T2 is calculated as the order quantity of the component. Accordingly, the timing of ordering the component parts is a time point (t2-T2) that is back by the delivery lead time T2 from the time point t2 when the component parts are used for production of the product. Further, the order quantity of the component parts at the time point (t2-T2) is the planned use amount of the component parts at the time point t2.

  The delivery lead times T1 and T2 include at least the time from when an order is placed until the part arrives at the assembly position of the part on the product production line 225, and may further include a safety time. Each order quantity calculated as described above may be corrected by an appropriate parameter such as the number of defective products.

  As shown in FIG. 3, the order instruction card management apparatus 203 includes a production plan (inside) database 207, an order instruction card number management database 209, a production plan creation unit 211, as functional blocks for realizing the above functions. Production plan (current day) database 213, production plan (after N1 day) database 215, production plan (after N2 day) database 217, supplier master database 219, module parts order quantity calculation unit (after N1 days) 221 and part order quantity calculation Part (N2 days later) 223. The specific functions of these units and databases will become clear from the description of operations described later.

[Configuration of primary parts factory]
FIG. 4 is a block diagram showing a configuration of a system installed in the primary parts factory 3. Hereinafter, the configuration of the system installed in the primary parts factory 3 will be described with reference to FIG.

  As shown in FIG. 4, a module parts management apparatus 311, a production plan planning apparatus 301, a production instruction apparatus 303, and an order instruction card issuing apparatus 305 are installed in the primary parts factory 3. Each of these devices is realized by, for example, a computer system, and each function of each device described below is realized by executing a program stored in a recording medium such as a ROM by a CPU.

  The module part management apparatus 311 is an apparatus that performs quality management, cost management, and drawing management for module parts. In FIG. 4, a module part management apparatus 311 includes a module part quality management unit 327 and a quality management database 333 that perform quality management, a module part cost calculation unit 329 and a cost management database 335 that perform cost management, and a module that performs drawing management. A component drawing management unit 331 and a drawing management database 337;

  The production plan planning device 301 is a device for planning a relatively long-term module part production plan. Here, a module part production plan for one month is drafted as a module part production plan (indicated).

  The production instruction device 303 is a device that receives module part ordering information from the product production factory 1 and issues a production instruction to the module part production line 309 of the primary part factory 3 based on the module part ordering information. Here, the production instruction device 303 calculates the production amount of module parts based on the order quantity indicated by the module part ordering information and the production progress of the module parts production line 309, and the module is based on the production quantity. A production instruction is given to the parts production line 309.

  As shown in FIG. 4, the production instruction device 303 has a module parts production plan (inside) database 313, a module parts production plan (after N1 days) database 315, and module parts production as functional blocks for realizing the above functions. An amount (after N1 day) calculation unit 317 and a module part production instruction unit (after N1 day = current day) 319 are provided. The specific functions of these units and databases will become clear from the description of operations described later.

  The ordering instruction card issuing device 305 is a device that receives module part ordering information from the product production factory 1 and issues an ordering instruction card based on the module part ordering information. The ordering instruction card number input unit 323 and the ordering instruction card And an issuing unit 325.

[Configuration of secondary parts factory]
FIG. 5 is a block diagram showing a configuration of a system installed in the secondary parts factory 9. Hereinafter, the configuration of the system installed in the secondary parts factory 9 will be described with reference to FIG.

  As shown in FIG. 5, the secondary parts factory 9 is provided with a parts management apparatus 411, a production plan planning apparatus 401, a production instruction apparatus 403, and an order instruction card issuing apparatus 405. Each of these devices is realized by, for example, a computer system, and each function of each device described below is realized by executing a program stored in a recording medium such as a ROM by a CPU.

  The part management apparatus 411 is an apparatus that performs quality management, cost management, and drawing management for component parts. In FIG. 5, a component management apparatus 411 includes a component quality management unit 427 and a quality management database 433 that perform quality management, a component cost calculation unit 429 and a cost management database 435 that perform cost management, and a component drawing management unit that performs drawing management. 431 and a drawing management database 437.

  The production plan drafting device 401 is a device for drafting a relatively long-term component production plan. Here, the production plan for a component for one month is drafted as a component production plan (indicated).

  The production instruction apparatus 403 is an apparatus that receives component part ordering information from the product production factory 1 and issues a production instruction to the part production line 409 of the secondary part factory 9 based on the component part ordering information. Here, the production instruction device 403 calculates the production amount of the component based on the order quantity indicated by the component part ordering information and the production progress of the parts production line 409, and the parts production is performed based on the production quantity. A production instruction is given to the line 409.

  As shown in FIG. 5, the production instruction apparatus 403 includes a part production plan (inside) database 413, a part production plan (after N2 days) database 415, and a part production amount (N2) as functional blocks for realizing the above functions. (After the day) a calculation unit 417 and a parts production instruction unit (after N2 days = the same day) 419 are provided. The specific functions of these units and databases will become clear from the description of operations described later.

  The order instruction card issuing device 405 is a device that receives component part ordering information from the product production factory 1 and issues an order instruction card based on the component part ordering information. The order instruction card number input unit 423 and the order instruction card And an issuing unit 425.

[Product production plant processing]
FIG. 6 is a flowchart showing processing of the product production factory 1. Hereinafter, the processing of the product production factory 1, that is, the operation of each device installed in the product production factory 1 will be specifically described with reference to FIG.

  In the product production factory 1, prior processing (S501 to S515) is performed prior to ordering processing or the like (S517 to S535) performed on the day of each production date.

  That is, the product quality management unit 231 creates a quality management table for each product, module part, and component part (S501). Here, the quality management table is a table in which at least the number of defective products is recorded. For example, the number of defective products per day for each component type is recorded. Each created quality management table is stored in the quality management database 233.

  The product cost calculation unit 237 creates cost calculation formulas for products, module parts, and component parts (S503). Here, the cost calculation formula is expressed by a function having, for example, the number of productions and the number of defective products as variables. Each cost calculation formula created is stored in the cost management database 239.

  The product drawing management unit 243 creates drawing information of each product, module part, and component part (S505). Each created drawing information is stored in the drawing management database 245.

  The product management device 227 transmits the module component quality management table, the cost calculation formula, and the drawing information to the primary component factory 3 (S507). Further, the product management device 227 transmits the quality management table of the component parts, the cost calculation formula, and the drawing information to the secondary parts factory 9 (S509).

  The production plan creation 201 drafts a product production plan as a production plan (indicated) on a monthly basis (S511). In this production plan (indicated), the arrangement of vehicles (production order) for one month is determined. For example, if the vehicle type is represented by “Si” (i = 1, 2, 3,...), “S1, S2, S1, S3, S1, S2,. For example, the production order of car models is determined. Furthermore, in the production plan (indicated), it is determined which part of the production order of the vehicle type is produced on which production day. For example, “the first day is from the first unit to the 100th unit, the second day is from the 101st unit to the 200th unit, and so on”. That is, in the production plan (indicated), the production order of vehicle types on each production date is determined.

  The ordering instruction card management device 203, for each vehicle type produced on the product production line 225, has a module part “Sij” (j = 1) constituting the vehicle type “Si” (i = 1, 2, 3,...). , 2, 3,...) Is created and stored in the supplier master database 219 (S513). Further, the ordering instruction card management device 203 creates, for each module part, a parts table indicating the component part “Sijk” (k = 1, 2, 3,...) Constituting the module part “Sij”. The data is stored in the supplier master database 219 (S515).

  The pre-processing has been described above, but the following order processing (S517 to S535) is executed on the day of a certain production date (N days). In the description related to parts ordering and the like after this, for convenience of description, attention is paid to the module part A having a delivery lead time of N1 days among many module parts Sij. Further, attention is paid to the component B having a delivery lead time of N2 days among the many components Sijk. Actually, the same processing is performed for each of a large number of module parts and a large number of component parts in accordance with each delivery lead time.

  In FIG. 6, the ordering instruction card management device 203 determines whether or not N day is the production plan input date (S517). Here, the production plan input date is a predetermined date, and here is a predetermined day of each month such as the first day of every month. When it is determined that the date is the production plan input date (S517: YES), the ordering instruction card management apparatus 203 acquires the production plan (indicated) from the production plan planning apparatus 201 and stores it in the production plan (indicated) database 207. (S519). On the other hand, when it is determined that the date is not the production plan input date (S517: NO), the production plan (indicated) is not acquired and stored, and the process proceeds to step S521. As a result, the production plan (inside) in the production plan (inside) database 207 is updated only once a month on the production plan input date.

  Next, the production plan creation unit 211 refers to the production plan (internal display) database 207, and based on the production plan (internal display) and the progress of the product production line 225 up to the previous day with respect to the production plan (internal display) (N Production plan (current day), production plan (day N1) after N1, and production plan (day N2) after N2 and production plan (day N2) (Same day) Database 213, production plan (after N1 day) database 215, production plan (after N2 day) database 217 are stored (S521).

  Here, an example of the process of the production plan creation unit 211 will be described with reference to FIG. In FIG. 7, in the production plan (indicated), “the 1st to 100th units are produced on (N-1) day, the 101st to 200th units are produced on N day, and the 201st to 300th units are produced on (N + 1) day. ..., the 501 to 600th units are produced on the (N + N1) day, the 1001 to 1100th units are produced on the (N + N2) day, and so on. In such a case, when only the 1st to 90th vehicles can be produced due to line stoppage or the like on (N-1) day, it is necessary to correct the production plan (indicated). Therefore, as shown in FIG. 7, the production plan creation unit 211 modifies the production plan (indicated) based on the progress, and “produces 91st to 190th vehicles on the Nth day and 191 to 290th on the (N + 1) th day. New production such as “..., production of 491-590th day on (N + N1), production of 991-1090th on (N + N2) day,” and so on. Create a plan. In the revised production plan, the portion (the hatched portion in FIG. 7) of “Production of 491-590th day on (N + N1)” corresponds to the production plan (after N1 day), and “(N + N2) day "991 to 1090th production" (the thin line hatched portion in FIG. 7) corresponds to the production plan (after N2 days).

  The progress of the product production line 225 may be recognized by an appropriate method, but here it is recognized as follows. That is, the information on the order instruction card read by the order instruction card reader 205 is stored in the order instruction card number management database 209 together with the reading time. The production plan creation unit 211 calculates the progress of the product production line 225 up to the previous day based on the data stored in the ordering instruction card number management database 209.

  The module part order quantity calculation unit (after N1 day) 221 is based on the production plan (after N1 day) database 215 and the parts table stored in the supplier master database 219. Then, the quantity (scheduled usage amount) of the module part A required for the production after N1 days in the product production line 225 is calculated as the order quantity of the module part A (S523).

  Next, the module part order quantity calculation unit (N1 days later) 221 corrects the order quantity calculated in step S523 by the number of defective parts on the previous day of the module part A found in the product production factory 1, and obtains the final module part. The order quantity of A is calculated. For example, the final order quantity of the module part A is obtained by adding the number of defective products to the order quantity calculated in step S523.

  Here, the module part order quantity calculation unit (after N1 days) 221 acquires the number of defective parts on the previous day of the module part A as follows. That is, the product management apparatus 227 receives an input of the number of defective parts of the module part A found in the product production factory 1 and records the input number of defective parts in the quality management database 233. The module part order quantity calculation unit (after N1 days) 221 acquires the number of defective parts on the previous day of the module part A from the quality management database 233. It should be noted that the number of defective module parts may include the number lost at the product production factory 1 due to breakage or incorrect assembly in addition to the original number of defective products.

  Then, the module part order quantity calculation unit (N1 days later) 221 transmits module part order information indicating the order of the module part A having the order quantity calculated as described above to the primary parts factory 3 via the communication network 15. To do. That is, the module part A is ordered from the primary part factory 3 by the calculated order quantity (S525). The module part ordering information includes information indicating the part type (here, module part A), information indicating the part quantity (the calculated order quantity), and information indicating the part factory (here, the primary part factory 3). Etc. are included.

  The parts order quantity calculation unit (after N2 days) 223 is based on the production plan (after N2 days) database 217 and the parts table stored in the supplier master database 219. The quantity (scheduled usage amount) of the component part B required for production after N2 days in the product production line 225 is calculated as the order quantity of the component part B (S527).

  Next, the part order quantity calculation unit (after N2 days) 223 corrects the order quantity calculated in step S527 with the number of defective parts on the previous day of the component B found in the primary parts factory 3, and the final component The order quantity of B is calculated. For example, the final order quantity of the component B is obtained by adding the number of defective products to the order quantity calculated in step S527.

  Here, the part order quantity calculation unit (N2 days later) 223 acquires the number of defective products on the previous day of the component B as follows. That is, the module part management apparatus 311 receives an input of the number of defective parts B found in the primary part factory 3, and the input number of defective parts is sent to the product production factory 1 (here, the product management apparatus 1) via the communication network 15. 227). The product management device 227 records the number of defective parts B received from the primary part factory 3 in the quality management database 233. The part order quantity calculation unit (after N2 days) 223 obtains the number of defective products on the previous day of the component B from the quality management database 233. It should be noted that the number of defective components may include the number of parts lost in the primary parts factory 3 due to breakage or incorrect assembly in addition to the original number of defective products.

  Then, the part order quantity calculation unit (after N2 days) 223 transmits component part order information indicating the order of the component B having the order quantity calculated as described above to the secondary parts factory 9 via the communication network 15. . That is, the component B is ordered to the secondary parts factory 9 by the calculated order quantity (S529). The component part ordering information includes information indicating a part type (here, the component part B), information indicating a part quantity (the calculated order quantity), and information indicating a part factory (here, the secondary part factory 9). Etc. are included.

  When the ordering process is completed, for example, at the end of one day (N days), the product production factory 1 (product management apparatus 227 here) receives N parts from the primary parts factory 3 (here module part management apparatus 311). The quality control information and cost calculation result of the day are received (S533), and the quality control information and cost calculation result of the N day are received from the secondary parts factory 9 (here, the parts management device 411) (S535). Before receiving the N-day quality control information / cost calculation result at the product production factory 1 side, the primary parts factory 3 and the secondary parts factory 9 create N-day quality control information. Calculate the cost of the day. Quality management and cost management will be described in detail later.

  When the date is changed to (N + 1) day after the above process is finished (S537: YES), the ordering process on the production date (N + 1) and other processes (S517 to S535) are the processes on the production day N. It is executed (S539).

[Secondary parts factory processing]
Next, referring to FIG. 5, processing contents of the secondary parts factory 9, that is, operations of each device installed in the secondary parts factory 9, processing related to orders, processing related to quality control, processing related to cost management, drawings The process will be described separately for management.

(Order processing)
Similarly to the product production factory 1, the secondary parts factory 9 prepares a production plan in advance on a monthly basis by the production plan drafting device 401. The planned production plan is stored in the parts production plan (inside) database 413 of the production instruction apparatus 403 as a parts production plan (inside).

  On the other hand, when receiving the component part ordering information from the product production factory 1 through the communication network 15 as the required part quantity after N2 days, the production instruction device 403 calculates the production amount of the component part B based on the component part ordering information. Specifically, the part production amount (after N2 days) calculation unit 417 calculates the planned production amount of the component B by correcting the order quantity indicated by the component part ordering information based on the progress of the part production line 409. For example, if the part production line 409 is stopped for half a day on the previous day and production as planned is not possible, the inventory of the component B will decrease, so the part production amount (after N2 days) calculation unit 417 The order quantity indicated by the part ordering information is corrected in the direction of increasing production. Here, the progress of the parts production line 409 is grasped by the parts shipping unit 407 and input to the production instruction device 403.

  The part production amount (after N2 days) calculation unit 417 stores the planned production amount of the component B calculated as described above in the parts production plan (after N2 days) database 415.

  When the component part ordering information is not received due to communication trouble or the like, the part production volume (after N2 days) calculation unit 417 is stored in the part production plan (indicated) database 413 instead of the component part ordering information. The production schedule amount of the component B is calculated using the parts production plan (indicated) and stored in the parts production plan (after N2 days) database 415.

  A parts production instruction section (after N2 days = current day) 419 issues a production instruction to the parts production line 409 based on the data in the parts production plan (after N2 days) database 415. In the component production line 409, the component B is produced according to this production instruction, and the completed component B is collected in the component shipping section 407.

  The component part ordering information from the product production factory 1 is also received by the ordering instruction card issuing device 405. The ordering instruction card issuing device 405 issues an ordering instruction card based on the received component part ordering information. Specifically, the issue instruction card number input unit 423 converts the order quantity indicated by the component part ordering information into the order instruction card number. For example, when one card corresponds to 10 of the component parts B, the order quantity “100” is converted into the number of cards “10”. The ordering instruction card issuing unit 425 prints and issues ordering instruction cards for the converted number of cards. The issued order instruction card is attached to the component B of the component shipping unit 407. Generally, component parts are stored on a pallet or the like in lot units, and ordering instruction cards are also attached to pallets or the like in lot units. The component B is transported to the primary part factory 3 by a truck, used for production of module parts in the primary part factory 3, and delivered to the product production factory 1 in a state assembled to the module parts.

(Processing related to quality control)
The part quality management unit 427 receives an input of the number of defective components generated in the part production line 409 and stores the input number of defective products in the quality management database 433. Specifically, the number of defective products is recorded in the quality control table received in advance from the product production factory 1. This quality control table is used for quality control of components in the secondary parts factory 9.

  Further, the part quality management unit 427 transmits the input number of defective products to the product production factory 1 via the communication network 15. The number of defective components is received by the product quality management unit 231 and stored in the quality management database 233 in the product production factory 1. Specifically, the number of defective products is recorded in the quality control table of the component parts. This quality control table is used for quality control of components in the product production factory 1.

(Processing related to cost management)
The component cost calculation unit 429 follows the cost calculation formula received from the product production factory 1 in advance, and the production amount of the component parts ascertained by the component shipment unit 407 and the number of defective components input to the component quality management unit 427 Based on the above, cost calculation is performed, and the cost calculation result is stored in the cost management database 435. The cost calculation result stored in the cost management database 435 is used for cost management of the component parts in the secondary parts factory 9.

  In addition, the component cost calculation unit 429 transmits the above cost calculation result to the product production factory 1. The cost calculation result is received by the product cost calculation unit 237 in the product production factory 1 and stored in the cost management database 239. The cost calculation result stored in the cost management database 239 is used for cost management of components in the product production factory 1.

(Processing related to drawing management)
The part drawing management unit 431 receives the drawing information of the component parts from the product production factory 1 via the communication network 15 and stores it in the drawing management database 437. The drawing information stored in the drawing management database 437 is used for inspection of components in the secondary parts factory 9.

[Processing of primary parts factory]
Next, referring to FIG. 4, the processing contents of the primary parts factory 3, that is, the operations of the respective devices installed in the primary parts factory 3, processing related to orders, processing related to quality control, processing related to cost management, drawings The process will be described separately for management.

(Order processing)
In the primary parts factory 3, as in the product production factory 1, a production plan is drafted in advance by the production plan drafting device 301 in advance. The produced production plan is stored in the module part production plan (inside) database 313 of the production instruction device 303 as a module part production plan (inside).

  On the other hand, when receiving the module part ordering information from the product production factory 1 through the communication network 15 as the necessary part quantity after N1 days, the production instruction device 303 calculates the scheduled production quantity of the module part A based on the module part ordering information. Specifically, the module part production amount (after N1 days) calculation unit 317 calculates the planned production amount of the module part A by correcting the order quantity indicated by the module part ordering information according to the progress of the module part production line 309. For example, if the module part production line 309 is stopped for half a day on the previous day and production cannot be performed as planned, the inventory of the module part A will decrease, so the module part production amount (after N1 days) calculation unit 317 The order quantity indicated by the module part ordering information is corrected in the direction of increasing production. Here, the progress of the module part production line 309 is grasped by the module part shipping unit 307 and input to the production instruction device 303.

  The module part production amount (after N1 day) calculation unit 317 stores the production amount of module part A calculated as described above in the module part production plan (after N1 day) database 315.

  When module part ordering information is not received due to a communication problem or the like, the module part production volume (after N1 days) calculation unit 317 is stored in the module part production plan (indicated) database 313 instead of the module part ordering information. The planned production amount of the module part A is calculated using the module part production plan (indicated), and is stored in the module part production plan (after N1 days) database 315.

  The module part production instruction section (N1 day later = current day) 319 issues a production instruction to the module part production line 309 based on the data in the module part production plan (N1 day later) database 315. In the module parts production line 309, the module parts A are produced according to the production instructions, and the completed module parts A are collected in the module parts shipping unit 307.

  The module part ordering information from the product production factory 1 is also received by the ordering instruction card issuing device 305. The ordering instruction card issuing device 305 issues an ordering instruction card based on the received module part ordering information. Specifically, the order instruction card number input unit 323 converts the order amount indicated by the module part ordering information into the order instruction card number. The ordering instruction card issuing unit 325 prints and issues ordering instruction cards for the converted number of cards. The issued order instruction card is attached to the module part A of the module part shipping unit 307. Generally, module parts are stored in pallets or the like in lot units, and ordering instruction cards are also attached to pallets or the like in lot units. Then, the module part A is transported to the product production factory 1 by a truck.

(Processing related to quality control)
The module part quality management unit 327 accepts input of the number of defective module parts generated in the module part production line 309 and stores the input number of defective parts in the quality management database 333. Specifically, the number of defective products is recorded in the quality control table received in advance from the product production factory 1. This quality control table is used for quality control of module parts in the primary parts factory 3.

  Further, the module part quality management unit 327 receives an input of the number of defective parts of the module parts generated in the module part production line 309 and transmits the input number of defective parts to the product production factory 1 via the communication network 15. The number of defective module parts is received by the product quality management unit 231 and stored in the quality management database 233 in the product production factory 1. Specifically, the number of defective products is recorded in the quality management table for module parts. This quality control table is used for quality control of module parts in the product production factory 1.

  Further, as described above, the module part management apparatus 311 receives an input of the number of defective parts found in the primary part factory 3 and transmits the input number of defective parts to the product production factory 1 via the communication network 15. . The number of defective components is received by the product management device 227 in the product production factory 1 and stored in the quality management database 233. The number of defective products stored in the quality management database 233 is used for order quantity calculation in the part order quantity calculation unit (after N2 days) 223 and used for quality control of component parts in the product production factory 1. .

(Processing related to cost management)
The module part cost calculation unit 329 follows the cost calculation formula received from the product production factory 1 in advance, and the module part production amount grasped by the module part shipping unit 307 and the module part input to the module part quality management unit 327 The cost calculation is performed based on the number of defective products, and the cost calculation result is stored in the cost management database 335. The cost calculation result stored in the cost management database 335 is used for cost management of module parts in the primary parts factory 3.

  Further, the module part cost calculation unit 329 transmits the above cost calculation result to the product production factory 1. The cost calculation result is received by the product cost calculation unit 237 in the product production factory 1 and stored in the cost management database 239. The cost calculation result stored in the cost management database 239 is used for cost management of module parts in the product production factory 1.

(Processing related to drawing management)
The module part drawing management unit 331 receives module part drawing information from the product production factory 1 via the communication network 15 and stores it in the drawing management database 337. The drawing information stored in the drawing management database 337 is used for inspection of module parts in the primary part factory 3.

  In addition, the process regarding the quality control of the product in the product production factory 1 is as follows. That is, the product quality management unit 231 receives an input of the number of defective products generated in the product production line 225 and stores the input number of defective products in the quality management database 233. Specifically, the number of defective products is recorded in the product quality control table.

  Further, processing related to product cost management in the product production factory 1 is as follows. That is, the product cost calculation unit 237 performs cost calculation based on the production amount of the product produced in the product production line 225 and the number of defective products input to the product quality management unit 231 according to the product cost calculation formula. The cost calculation result is stored in the cost management database 239.

  According to the present embodiment described above, the following effects can be obtained.

  (1) In the parts procurement system according to the present embodiment, the parts ordering device (ordering instruction card management device 203) calculates the order quantity of module parts based on the product production plan, and the module parts of the calculated order quantity Module part ordering information indicating the order of the product is sent to the module parts order receiving device (production instruction device 303, order instruction card issuing device 305) via the communication line, and the order quantity of the component parts is calculated based on the product production plan, The component part ordering information indicating the order of the component of the calculated order quantity is transmitted to the component order receiving device (production instruction device 403, order instruction card issuing device 405) via the communication line. In other words, the part ordering apparatus places an order for module parts with respect to the primary part factory and an order for components with respect to the secondary part factory based on the product production plan. As described above, since module parts are ordered and component parts are ordered based on the product production plan, according to the present embodiment, the module parts and components are arranged in an appropriate amount at an appropriate timing according to the product production plan. Parts can be ordered in a planned manner, and it is possible to properly maintain the inventory amount of the entire parts of the product production factory, the primary parts factory, and the secondary parts factory.

  (2) In the parts procurement system according to the present embodiment, when the delivery lead time from when the order is placed until the module parts are delivered to the product production factory is T1, the parts ordering device Based on the production plan of the product at the time, the expected amount of module parts to be used after the delivery lead time T1 is calculated as the order quantity of the module parts. In addition, when the delivery lead time from when the order is placed until the component is delivered to the product production factory via the primary parts factory is T2, the delivery lead is based on the product production plan after the delivery lead time T2. The planned use amount of the component at the time after time T2 is calculated as the order quantity of the component. For this reason, the module parts used for production of the product at a certain time in the future can be ordered in a quantity required at that time when the delivery lead time T1 goes back from that time. In addition, it is possible to place an order for a component used for production of a product at a certain point in the future in an amount required at that point in time when it is traced back by the delivery lead time T2. Thereby, according to this Embodiment, the timing of use of each part in a product production factory and the timing of delivery can be synchronized, and the whole of a product production factory, a primary parts factory, and a secondary parts factory can be synchronized. The parts inventory can be maintained appropriately.

  (3) In the parts procurement system according to the present embodiment, the parts ordering device calculates the order quantity of the module parts based on the product production plan and the number of defective module parts found in the product production factory. The order quantity of the component parts is calculated based on the production plan and the number of defective parts found in the primary parts factory. For this reason, in addition to systematic ordering based on the production plan, ordering of module parts to make up for the shortage of module parts in the product production factory due to defective products, and to compensate for defective parts in the primary parts factory due to defective products It is possible to place an order for these components. As a result, according to the present embodiment, it is possible to cope with a shortage of module parts and component parts due to defective products, and the entire parts inventory of the product production factory, primary parts factory, and secondary parts factory is appropriate. Can be maintained.

  (4) In the parts procurement system according to the present embodiment, the order quantity of module parts and component parts is calculated at the product production factory in the part procurement in the module production method. Correspondence can be easily confirmed, and waste in order calculation can be reduced.

  (5) In the parts procurement system according to the present embodiment, in the parts procurement in the module production system, the module parts produced at the primary parts factory and the parts table data of the components produced at the secondary parts factory are used as the product production factory. Because it is created in, it is possible to grasp the entire part in the product production factory.

  (6) In the component management system according to the present embodiment, in the product-module component-component configuration system, quality information management and cost management are simultaneously performed in addition to component procurement. Specifically, if a defective product occurs in a product produced in a product production factory, a module part produced in a primary parts factory, or a component produced in a secondary parts factory, information on the defective product is entered in each factory. And save it in the quality control database. Also, cost calculation based on the number of defective products is performed. Thus, according to the present embodiment, comprehensive management of products, module parts, and component parts can be performed. Further, since the quality control information and the cost control information are transmitted from the primary part factory and the secondary part factory to the product production factory via the communication line, comprehensive management can be performed at the product production factory.

  (7) In the component management system according to the present embodiment, each drawing management is comprehensively performed at the product production plant in the product-module component-component component configuration system, and the module component is transferred to the primary component plant. The drawing information of the component is sent to the secondary parts factory and used for production, and when there is a change or the like, it is dealt with in a short time.

  (8) With the modularization of production of automobiles and other products, it has become necessary to respond to production methods based on the Kanban concept. That is, parts procurement method, quality control method, cost calculation, drawing management and the like. Conventionally, regarding the product, the bill of material data (supplier master) and the part order quantity that composes the product, the product production factory should consider only the relationship of the primary parts factory. For factories and secondary parts factories, it has become necessary to take into account the component configuration, the order quantity and order timing of parts, the quality and associated cost calculations.

  In addition, if a defect (breakage, incorrect assembly, etc.) occurs during the subsequent order from the parts factory to the product production factory or assembly on the line, the production plan and the order quantity are adjusted. In addition, since it is necessary to perform cost calculation, the parts ordering system, quality control, and cost control must be enabled at the same time.

  In the parts management system according to the present embodiment, the product production factory creates parts table data for a primary part factory that produces module parts and a secondary part factory that produces component parts. Calculate and place an order for the parts factory taking into account the timing of production at the product production factory, manage the number of defective parts for module parts and components, adjust the order quantity, and calculate the associated costs. Do and also manage drawings. For this reason, according to the present embodiment, it is possible to provide a component management system corresponding to the module production method that meets the above-described requirements.

  (9) For reference, the advantages of the product production factory when the module production method is used are shown below. First, since the number of parts to be assembled on the product production factory side is relatively reduced, the production line is shortened and the cost of the equipment can be reduced. In addition, shortening the production line leads to a reduction in risk in terms of work efficiency. Similarly, the labor force is relatively shifted to the primary parts factory, and labor-related costs can be reduced. In addition, with parts reduction and standardization, workability can be changed and efficiency can be improved, working hours can be shortened, and young and female workers can respond. For this reason, added value can be improved.

  In addition, this invention is not limited to the said embodiment, It can change variously within the range which does not deviate from the summary of this invention.

  For example, the module parts order receiving device is the production instruction device 303 and the order instruction card issuing device 305 in the above embodiment, but performs an order processing for delivering the module parts to the product production factory based on the module part ordering information. Any device may be used, such as a device that simply displays the contents of the module part ordering information on a display or a device that prints out the information. Similarly, in the above embodiment, the component order receiving device is the production instruction device 403 and the order instruction card issuing device 405. However, based on the component order information, the order receiving processing for delivering the component to the primary part factory is performed. Any device may be used as long as it performs the content of the component part ordering information on a display or a device for printing out.

  In addition, as a form for calculating the order quantity of the module parts based on the product production plan and the number of defective module parts, in the above embodiment, the expected use quantity of the module parts is calculated from the product production plan. Although the planned use amount is corrected by the number of defective products, the planned ordering based on the product production plan and the ordering to make up for the shortage based on the number of defective products may be performed separately. That is, the module part ordering information based on the product production plan and the module part ordering information based on the number of defective products may be transmitted separately. Similarly, regarding the component parts, the order based on the product production plan and the order based on the number of defective products may be performed separately.

It is the schematic which shows the whole structure of the components management system containing the components procurement system which concerns on embodiment. It is a figure for demonstrating the timing of ordering of components. It is a block diagram which shows the structure of the system installed in a product production factory. It is a block diagram which shows the structure of the system installed in a primary parts factory. It is a block diagram which shows the structure of the system installed in a secondary parts factory. It is a flowchart which shows the process of a product production factory. It is a figure for demonstrating an example of a process of a production plan preparation part. It is a figure which shows the conventional production system of products, such as a motor vehicle. It is a figure for demonstrating the conventional component procurement system. It is a figure which shows a module production system. It is a figure which shows an example of the components structure in the conventional production system. It is a figure which shows an example of the components structure in a module production system.

Explanation of symbols

  1 Product production factory, 3, 5, 7 Primary parts supplier factory, 9, 11, 13 Secondary parts supplier factory, 15 Communication network, 201, 301, 401 Production planning device, 203 Order instruction card management Device, 205 Order instruction card reader, 227 Product management device, 303,403 Production instruction device, 305,405 Order instruction card issuing device, 311 Module component management device, 411 Component management device.

Claims (8)

Parts ordering equipment installed in a product production factory that produces products,
Module parts ordering equipment installed at the primary parts supplier factory that produces module parts used in the production of products,
A component ordering device installed at a secondary parts supplier factory that produces component parts used in the production of module parts,
The parts ordering device calculates the order quantity of the module parts based on the production plan of the product, and sends module parts ordering information indicating the order of the module parts of the calculated order quantity to the module parts order receiving apparatus via the communication line, Calculate the order quantity of the component based on the production plan of the product, send the component order information indicating the order of the component of the calculated order quantity to the component order receiving device via the communication line,
Upon receiving the module part ordering information, the module part order receiving device performs order processing for delivering the module part to the product production factory based on the module part ordering information,
The component procurement system receives a component part ordering information, and performs an ordering process for delivering the component part to a primary part supplier factory based on the component part ordering information. The component procurement system according to claim 1,
The delivery lead time from ordering to delivery of the module parts to the product production factory is T1, and from ordering to delivery of the component parts to the product production factory via the primary parts supplier factory When the delivery lead time is T2,
The parts ordering device
Based on the production plan of the product at the time after the delivery lead time T1, the planned use amount of the module parts at the time after the delivery lead time T1 is calculated as the order quantity of the module parts.
A parts procurement system that calculates a planned use amount of a component at a time after the delivery lead time T2 as an order quantity of the component based on a product production plan at the time after the delivery lead time T2. The component procurement system according to claim 1 or 2,
A module part defect count input device that is installed in a product production factory and accepts input of the number of defective module parts found in the product production factory;
A component part number input device that is installed in the primary part supplier factory and receives the input of the number of defective parts found in the primary part supplier factory;
The parts ordering device
Obtain the number of defective module parts input to the module part defective number input device, calculate the order quantity of the module parts based on the product production plan and the number of defective module parts,
The number of defective components input to the component defect number input device is acquired via a communication line, and the order quantity of the component is calculated based on the product production plan and the number of defective components. Parts procurement system. A component ordering device in a production system in which module parts are produced using component parts and products are produced using module parts,
Calculate the order quantity of module parts based on the production plan of the product, and order the module parts to instruct the primary parts supplier factory that produces the module parts to deliver the module parts of the calculated order quantity to the product production factory Means,
Calculate the order quantity of the component parts based on the product production plan, and instruct the secondary parts supplier factory that produces the component parts to deliver the component parts of the calculated order quantity to the primary parts supplier factory Component ordering means to
A part ordering apparatus characterized by comprising: The parts ordering device according to claim 4,
The delivery lead time from ordering to delivery of the module parts to the product production factory is T1, and from ordering to delivery of the component parts to the product production factory via the primary parts supplier factory When the delivery lead time is T2,
The module parts ordering means calculates the planned use amount of the module parts at the time after the delivery lead time T1 as the order quantity of the module parts based on the production plan of the product at the time after the delivery lead time T1.
The component ordering means calculates the planned use amount of the component at the time after the delivery lead time T2 as the order quantity of the component based on the product production plan at the time after the delivery lead time T2. Ordering equipment. The parts ordering device according to claim 4 or 5,
The module parts ordering means calculates the order quantity of the module parts based on the product production plan and the number of defective module parts found in the product production factory,
The component ordering means calculates the order quantity of the component based on the product production plan and the number of defective component components found in the primary component supplier factory. A module parts order receiving device in a production system in which module parts are produced using component parts and products are produced using module parts,
Calculate the order quantity of the module parts based on the product production plan, and instruct the primary parts supplier factory that produces the module parts to deliver the module parts of the calculated order quantity to the product production factory. The order quantity of the component part is calculated based on the production plan of the product, and the delivery of the calculated order quantity of the component part to the primary part supplier factory is instructed to the secondary part supplier factory that produces the component part. For receiving module part ordering information indicating ordering of module parts of the order quantity calculated based on the product production plan from the part ordering device, and for delivering the module parts to the product production factory based on the module part ordering information Module parts order receiving device characterized by receiving order processing. A component ordering device in a production system in which module parts are produced using component parts and products are produced using module parts,
Calculate the order quantity of the module parts based on the product production plan, and instruct the primary parts supplier factory that produces the module parts to deliver the module parts of the calculated order quantity to the product production factory. The order quantity of the component part is calculated based on the production plan of the product, and the delivery of the calculated order quantity of the component part to the primary part supplier factory is instructed to the secondary part supplier factory that produces the component part. From the parts ordering device, the system receives component ordering information indicating the ordering of the component of the order quantity calculated based on the production plan of the product, and sends the component parts to the primary parts supplier factory based on the component parts ordering information. A component order receiving device characterized by performing order processing for delivery.

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