JP4941380B2 - Production management program, production management apparatus, and production management method - Google Patents

Description

  The present invention relates to a production management program, a production management apparatus, and a production management method, and more particularly, to a production management program, a production management apparatus, and a production management method for managing production of parts in units of items.

  Conventionally, in the manufacturing industry, a production management system for performing production planning and material procurement for products has been used. By using the production management system, it is possible to efficiently perform inventory management of components such as intermediate products and parts necessary for manufacturing products, ordering instructions when inventory is insufficient, and product manufacturing instructions based on inventory.

  Here, in the production management system, a method called material requirements planning (MRP) is used in order to manage the production of each product based on the stock status of products and components.

  In MRP, a product is developed as a component based on a parts table that defines a pre-registered product configuration and a product production plan, and the component is expanded as a lower component. Then, with respect to the developed components, the required quantity of each component for the product is calculated by a calculation method called requirement calculation, and the production period and cost of the product or component are calculated. Furthermore, in MRP, based on the result of the required amount calculation, the shortage inventory, the delivery date, etc. are grasped, and the ordering instruction and the manufacturing instruction for each component are given.

As a production management method using such an MRP method, a manufacturing arrangement is not confirmed for a part arranged according to a prospective production plan of the product, and a manufacturing arrangement is made by assigning the above part when the corresponding product is received. There is a known method for deterring excess inventory of parts by confirming (see, for example, Patent Document 1).
JP-A-5-342241

  However, in the method described in Patent Document 1, in order to calculate the required amount, an item master in which information on each item is registered and a parts table for developing the product as a component are required in advance. For this reason, there is a problem that it is difficult to perform production management when the product and its components are not registered in the item master or the bill of materials.

  For example, in the item master, the order of items for which the requirement calculation is executed is managed by the item level number indicating the item hierarchy of each item. This item level number is used to determine the order of calculation of requirements for each item, and is called a low level code (LLC). On the item master, for a certain item, LLC is set without contradiction so as to indicate a lower hierarchy than all the upper items. On the other hand, when making arrangements for items that are not registered in the item master, it is necessary to set the LLC of the unregistered item consistently with the LLC on the item master. May not be possible.

  The present invention has been made in view of such points, and it is possible to easily manage the item hierarchy even when handling a product in which items registered in the item master or bill of materials and unregistered items are mixed. An object is to provide a possible production management program, production management apparatus, and production management method.

  In order to solve the above-described problem, a production management program is provided that performs production management of parts on an item-by-item basis using an item level number that is assigned to each item in accordance with the dependency relationship between the parts. A computer that executes the production management program has item information storage means, product information generation means, item level assignment means, and required amount management means. The item information storage means stores item information including item level numbers for a plurality of items. The product information generation means has a hierarchical part structure including a part of an item already registered in the item information stored in the item information storage means and a part of an unregistered item in the item information in response to an input of a product order. Generate product information that defines the product. The item level assigning means, for each item of the parts included in the product information generated by the product information generating means, is the item level number in all products used in product production management. A hierarchical number of the hierarchy that appears is assigned, and for registered items, a common value is added in all products that are greater than the lowest hierarchical level number in which the parts of the unregistered item appear in the item level number registered in the item information Give a number. The requirement management means calculates the material requirement for each item in the order corresponding to the item level numbers in all products assigned by the item level assigning means.

  According to the computer executing such a production management program, the item information storage means stores the item information including the item level number for a plurality of items in response to the input of the product order by the product information generation means. Product information defining a product having a hierarchical part structure including parts of items already registered in the information and parts of items not registered in the item information is generated. Then, for each item of the parts included in the product information generated by the product information generating means by the item level assigning means, the item level number in all products used for product production management, The hierarchy number of the hierarchy where the part appears is assigned, and for the registered item, the item level number registered in the item information has a common value in all products that is higher than the lowest hierarchy number where the part of the unregistered item appears. The added number is given. Furthermore, the material requirement calculation for each item is performed by the requirement management unit in the order corresponding to the in-product item level number assigned by the item level assigning unit.

  Moreover, in order to solve the said subject, the production management apparatus and the production management method which perform the process similar to the computer which performs the said production management program are provided.

  According to the above production management program, production management device, and production management method, the item hierarchy can be easily managed even when dealing with products in which items registered in the item master or bill of materials are mixed with unregistered items. it can.

Hereinafter, the present embodiment will be described in detail with reference to the drawings. First, an outline of the present embodiment will be described, and then specific contents of the present embodiment will be described.
FIG. 1 is a diagram showing an outline of the present embodiment. The computer 1 shown in FIG. 1 performs production management of parts on an item-by-item basis using an item level number assigned to each item according to the dependency relationship between the items of the parts. The computer 1 includes item information storage means 1a, product information generation means 1b, item level assignment means 1c, material requirement management means 1d, and arrangement information storage means 1e.

  The item information storage means 1a is based on the item level number indicating the item hierarchy of each of the plurality of items and the bill of material indicating the hierarchical structure of each of the plurality of items when used as a part in the production of the product. The item information managed in this way is stored.

  Hereinafter, an item registered in the item information is referred to as a registered item, and an item not registered in the item information is referred to as an unregistered item. For products, intermediate products and parts are collectively referred to as components.

The item information is created in advance by the administrator and stored in the item information storage unit 1a.
The product information generation means 1b accepts an input of a product order including the quantity and delivery date of the corresponding product at the timing of the product order. This product order includes the components of the product. Here, hereinafter, each product and each component included in the product order are referred to as an arrangement product. In addition, the product order includes a hierarchy number indicating a hierarchical configuration when each arrangement item is used as a part of the arrangement item one level higher than the corresponding arrangement item. Here, the hierarchical structure indicated by the hierarchical number corresponds to the hierarchical structure managed in the parts table of the item information. The product information generation means 1b includes product order information and generates product information indicating that a new arrangement of the above-mentioned arrangement item is necessary.

  Also, the arrangement items to be input include products and components that are the registered items. For the registered item, the product information generating unit 1b acquires information such as the delivery date of the registered item and the subordinate components based on the item information stored in the item information storing unit, and generates product information.

The product information generating unit 1b outputs the generated product information to the item level providing unit 1c.
The item level assigning unit 1c determines whether or not the registered item is included in the product information based on the item information stored in the item information storage unit 1a and the product information acquired from the product information generating unit 1b. The item level assigning means 1c, when the registered information is included in the product information, is an alternative level indicating a hierarchy lower than the hierarchical number indicating the lowest layer among the hierarchical numbers of the arranged items as the item level number of the registered item Calculate the number. As a result, the in-product item level number is assigned to the item level number of the corresponding registered item included in the product information so that the item level number is lower than the layer number of the unregistered item. In addition, the item level assigning unit 1c assigns a hierarchical number as an in-product item level number for unregistered items.

The material requirement management unit 1d executes the material requirement planning process based on the in-product item level number assigned by the item level assigning unit 1c to each item.
The material requirement management means 1d acquires the required amount and delivery date of the item (hereinafter referred to as the arrangement item) input as the arrangement item based on the execution result of the material requirement planning process, and each arrangement item Arrangement information for use in ordering instructions, manufacturing instructions, and the like is generated. The material requirement management means 1d stores the generated arrangement information in the arrangement information storage means 1e.

  The arrangement information storage unit 1e stores arrangement information of each arrangement item generated by the material requirement management unit 1d according to the product information. Based on this arrangement information, for example, an ordering instruction or a manufacturing instruction for each arrangement item is issued.

  As described above, when the received product information includes the registered item, the item level assigning unit 1c is lower than the hierarchical level number of the unregistered item with respect to the item level number in the item information of the registered item. Calculate item level numbers in all products so as to be hierarchical. The material requirement management means 1d determines the calculation order based on the item level number in all products, even when dealing with products in which registered items and unregistered items are mixed. It can be executed correctly.

Hereinafter, the present embodiment will be described in detail with reference to the drawings.
FIG. 2 is a diagram illustrating a hardware configuration of the computer according to the present embodiment. The computer 100 executes the production management program of the present embodiment, and performs product production management by using a material requirement plan (hereinafter abbreviated as MRP).

  The computer 100 is entirely controlled by a CPU (Central Processing Unit) 101. A random access memory (RAM) 102, a hard disk drive (HDD) 103, a graphics processing device 104, an input interface 105, and a communication interface 106 are connected to the CPU 101 via a bus 107.

  The RAM 102 temporarily stores at least part of an OS program and application software (hereinafter referred to as an application) program to be executed by the CPU 101. The RAM 102 stores various data necessary for processing by the CPU 101.

  The HDD 103 is a disk device for storing data. The HDD 103 stores an OS program and application programs. The HDD 103 stores various data necessary for processing by the CPU 101.

  A monitor 11 is connected to the graphic processing device 104. The graphic processing device 104 displays an image on the screen of the monitor 11 in accordance with a command from the CPU 101. A keyboard 12 and a mouse 13 are connected to the input interface 105. The input interface 105 transmits a signal transmitted from the keyboard 12 or the mouse 13 to the CPU 101 via the bus 107. The communication interface 106 is connected to the network 10. The communication interface 106 transmits / receives data to / from another computer via the network 10.

  FIG. 3 is a block diagram illustrating functions of the computer according to the present embodiment. The computer 100 includes an item information storage unit 110, an arrangement information storage unit 120, an input / output unit 130, a product information generation unit 140, an alternative LLC calculation unit 150, an MRP processing unit 160, and an arrangement information generation unit 170.

  The item information storage unit 110 stores item information in which a plurality of items are managed based on a low level code (hereinafter abbreviated as LLC) indicating the item hierarchy of each item and a component configuration. The item registered in the item information is a registered item. The item information is created in advance by the administrator and stored in the item information storage unit 110.

  Here, LLC indicates the lowest hierarchy in which the registered item is located in the component configuration for each registered item. The LLC is used, for example, to determine the order of items for which requirement calculation is performed in the MRP. The requirement calculation is a calculation for obtaining the quantity (requirement) of the component necessary for the quantity of the higher-level item. In order to perform the requirement calculation, it is necessary to sum the requirements of the upper items for the corresponding item. By determining the order of requirement calculation based on LLC, even if the corresponding item is a component of multiple higher-level items, the requirements for the corresponding item must be calculated after the calculation of the requirements for all the higher-level items is completed. A quantity calculation can be performed.

The arrangement information storage unit 120 stores arrangement information for performing an ordering instruction or a manufacturing instruction for each item generated by the arrangement information generation unit 170 according to the product information.
The input / output unit 130 generates a product order input screen necessary for generating product information. Here, the product order is, for example, attribute information such as the name, quantity, configuration, part level number (corresponding to the hierarchical number in the description of FIG. 1), and delivery date required for a new order. The input screen generated by the input / output unit 130 is output to the monitor 11. In accordance with the input screen, the manager inputs attribute information such as a newly arranged item to be arranged and a part level number.

  Further, the input / output unit 130 searches the item information stored in the item information storage unit 110 or the arrangement information stored in the arrangement information storage unit 120 based on the input by the administrator's keyboard 12 or mouse 13, and the The result is reflected on the input screen of the monitor 11. The administrator can also input the arrangement item from this search result. For example, when an arrangement item is input from item information, attribute information such as a name, configuration, and LLC set for the item is automatically input. In addition, when the arrangement item is input from the item included in the item information, the input component is not necessary because the subordinate components of the item can be acquired from the item information.

The input / output unit 130 acquires the product order input by the administrator on the input screen and outputs the product order to the product information generation unit 140.
The product information generation unit 140 generates product information based on the product order acquired from the input / output unit 130. The product information includes attribute information of each arrangement item included in the product order. The product information generation unit 140 outputs the generated product information to the alternative LLC calculation unit 150.

  Based on the item information stored in the item information storage unit 110 and the product information acquired from the product information generation unit 140, the alternative LLC calculation unit 150 determines whether or not the registered item is included in the product information arrangement item. judge. When the registered information is included in the product information, the alternative LLC calculating unit 150 sets the LLC in the product information of the registered item as a hierarchy lower than the component level number indicating the lowest layer among the component level numbers of the unregistered items. A predetermined value is added to the LLC so that an alternative LLC to be used in the MRP process of the corresponding product is calculated. For unregistered items that are not registered in the item information, the part level number at the time of product information acquisition is set as the alternative LLC. As a result, among the arrangement items, the alternative LLC of the registered item becomes a lower value than the alternative LLC of the unregistered item.

  The MRP processing unit 160 executes MRP processing of each ordered item based on the alternative LLC calculated by the alternative LLC calculation unit 150. By using the alternative LLC, the MRP processing unit 160 can execute the MRP processing without causing a contradiction regarding the processing order.

  The arrangement information generation unit 170 acquires the necessary number and delivery date of each arrangement item based on the execution result of the MRP process of the MRP processing unit 160, and uses arrangement information to be used for ordering instructions, production instructions, etc. of each arrangement item. Generate. The arrangement information generation unit 170 stores the generated arrangement information in the arrangement information storage unit 120. The arrangement information stored in the arrangement information storage unit 120 is used by, for example, another configuration (not shown) of the computer 100, and issues an ordering instruction or a manufacturing instruction for each arrangement item.

  FIG. 4 is a diagram illustrating an example of the data structure of the item table. The item table 110 a is stored in the item information storage unit 110. In the item table 110a, as information indicating the attribute of the registered item, an item indicating an item ID (IDentification), an item indicating an item name, an item indicating LLC, an item indicating a figure number, an item indicating a model type, an item indicating a specification, and An item indicating the MRP classification is provided. Information arranged in the horizontal direction of each item is associated with each other to constitute information about one registered item.

  In the item indicating the item ID, information for uniquely identifying the item is set. In the item indicating the product name, the name of the product is set. In the item indicating the LLC, a numerical value indicating the LLC of the item is set. In the item indicating the figure number, an identification number of the drawing corresponding to the item is set. In the item indicating the model, an identification number of the model corresponding to the item is set. In the item indicating the specification, a character string describing the feature of the item is set. In the item indicating the MRP classification, information indicating whether or not the required amount calculation for the corresponding item is possible is set. When the requirement calculation is possible, the information “target” is set in the MRP category, and when the requirement calculation is impossible, the information “non-target” is set in the MRP category.

  In the item table 110a, for example, the item ID is “PD-A”, the item name is “product name A”, the LLC is “0”, the drawing number is “Z001”, the model is “K001”, the specification is “specification A”, Information that the MRP classification is “target” is set. Data set in each item is information indicating the attribute of the corresponding item. An LLC of “0” indicates that there is no item higher than that item, that is, the highest product.

In addition to the items described above, the item table 110a may be provided with items such as scheduled delivery date and inventory quantity, for example.
Products and components are manufactured by combining items registered in the item table 110a. Information (so-called parts table) defining the configuration of each item is registered in advance in the computer 100 as a configuration table.

  FIG. 5 is a diagram illustrating an exemplary data structure of the configuration table. The configuration table 110b is stored in the item information storage unit 110. In the configuration table 110b, an item indicating an item ID, an item indicating an upper item, and an item indicating a required quantity are provided as information indicating the component configuration of the item. Information arranged in the horizontal direction of each item is associated with each other to constitute information about one registered item.

  In the item indicating the item ID, information for uniquely identifying the item is set. In the item indicating the upper item, the item ID of the upper item required for manufacturing the corresponding item is set. In the item indicating the required quantity, a numerical value indicating the required amount necessary for manufacturing one upper item is set.

  In the configuration table 110b, for example, information that the item ID is “PD-C”, the upper item is “PD-A”, and the required quantity is “2” is set. This is because the item whose item ID is “PD-C” is a component of the upper item whose item ID is “PD-A”, and the manufacture of the upper item whose item ID is “PD-A”. It is shown that the quantity required for is 2 pieces.

By referring to the configuration table 110b, it is possible to identify which higher-level product a certain intermediate product / part is.
The item information includes an item table 110a and a configuration table 110b.

  FIG. 6 is a diagram illustrating an example of the data structure of the arrangement table. The arrangement table 120 a is stored in the arrangement information storage unit 120. In the arrangement table 120a, as an example of information indicating the attribute of each item, an item indicating an arrangement number, an item indicating an item ID, an item indicating an item name, an item indicating a figure number, an item indicating a model, an item indicating a specification, An item indicating the quantity, an item indicating the production start date, and an item indicating the delivery date are provided. Information arranged in the horizontal direction of each item is associated with each other to constitute information about one arrangement.

  In the item indicating the arrangement number, information for uniquely identifying the arrangement of each item is set. In the item indicating the item ID, when the corresponding item is a registered item registered in the item table 110a, the item ID is set. The item indicating the item ID is “-(blank)” when the corresponding item is an unregistered item that is not registered in the item table 110a. In the item indicating the product name, the name of the product is set. In the item indicating the figure number, an identification number of the drawing corresponding to the item is set. In the item indicating the model, an identification number of the model corresponding to the item is set. In the item indicating the specification, a character string describing the feature of the item is set. In the item indicating the quantity, a quantity required for arrangement is set. In the item indicating the production start date, the date on which the production of the corresponding item is started is set as the date. In the item indicating the delivery date, the delivery date of the corresponding item is set by date.

  In the arrangement table 120a, for example, the arrangement number is “FA001”, the item ID is blank, the item name is “product name F”, the drawing number is “Z011”, the model is “K011”, the specification is “specification F”, and the quantity is “ 50 ”, the production start date is“ 2007/09/12 ”, and the delivery date is“ 2007/09/15 ”. This indicates that the item name of the item to be arranged with the arrangement number “FA001” is “product name F” and the item ID is blank, so that it is an unregistered item.

In addition to the above items, for example, information such as a supplier may be set in the arrangement table 120a.
The arrangement information includes an arrangement table 120a.

  FIG. 7 is a diagram illustrating an example of an arrangement item input screen. The arrangement item input screen 130 a is generated by the input / output unit 130 and output to the monitor 11. The information input on the arrangement item input screen 130a corresponds to the product order information. The computer 100 generates information to be stored in the arrangement table 120a based on information input by the administrator according to the arrangement item input screen 130a. The arrangement item input screen 130a includes an input area 131a, a search button 132a, and a confirmation button 133a.

The input area 131a is an area for the administrator to input item information.
The search button 132a is pressed to search for an item existing in the item table 110a or the arrangement table 120a and input item information in the input area 131a.

The confirm button 133a is pressed when confirming the content input in the input area 131a.
The input area 131a includes an item indicating a level, an item indicating an item ID, an item indicating an item name, an item indicating an arrangement number, an item indicating a demand, an item indicating an arrangement / required quantity category, an item indicating a figure number, and a model type. There are provided an item indicating, an item indicating the specification, an item indicating the quantity, an item indicating the production start date, and an item indicating the delivery date. Information arranged in the horizontal direction of each item is associated with each other to constitute information about one item.

  Here, an item indicating an item ID, an item indicating an item name, an item indicating an arrangement number, an item indicating a drawing number, an item indicating a model, an item indicating a specification, an item indicating a quantity, an item indicating a production start date, and a delivery date The items shown are the same as the items having the same names shown in the arrangement table 120a shown in FIG.

  In the item indicating the level, the hierarchy of the corresponding item when viewed from the product which is the highest item is set numerically. In the item indicating the arrangement / requirement quantity category, information “arrangement” indicating that an arrangement is created based on the input information is set if the item is an unregistered item and the requirement calculation is impossible. In addition, in the item indicating the arrangement / requirement quantity category, there is information “required quantity” indicating that the arrangement information is created based on the result of the requirement calculation when the requirement item calculation is possible for the registered item. Is set.

Information on each item is input by the administrator on the arrangement input screen 130a.
The administrator can also search for an item existing in the item table 110a or the arrangement table 120a by pressing the search button 132a and select an input target item from the search result. In this case, the administrator only needs to set the part level number of the product for the item selected and input on the arrangement input screen 130a. As for the registered item, the lower component can be obtained from the item information. Therefore, when the registered item is input, it is not necessary to input the component.

  FIG. 8 is a diagram illustrating an example of a search screen. The search item input screen 130b is generated by the input / output unit 130 and output to the monitor 11 when the administrator presses the search button 132a on the arrangement item input screen 130a. The search item input screen 130b has an input area 131b and a search execution button 132b.

The input area 131b is a screen for inputting a keyword used for search. Keywords used for the search are, for example, item ID, item name, drawing number, model, and specification information.
The search execution button 132b is a button for starting execution of search based on information input to the input area 131b. When the search execution button 132b is pressed, the input / output unit 130 searches the item table 110a and the arrangement table 120a based on the keyword input in the input area 131b. Further, the input / output unit 130 generates a search result screen 130 c based on the search result and outputs it to the monitor 11.

  The search result screen 130c has a result display area 131c and an input button 132c. The result display area 131c is an area for displaying the search result. The information displayed in the result display area 131c is a selection radio button, item ID, arrangement number, item name, figure number, model, and specification. The selection radio button is a radio button for selecting information to be input to the arrangement item input screen 130a from the search result.

  For example, when “product name F” is input as the product name in the input area 131 b of the search item input screen 130 b and the search execution button 132 b is pressed, the search is executed by the input / output unit 130. Then, on the search result screen 130c, the result of executing the search using “product name F” as a keyword for the item table 110a and the arrangement table 120a is output to the result display area 131c.

  The input button 132c is a button for reflecting the item selected in the result display area 131c on the arrangement item input screen 130a. By pressing the input button 132c, the administrator can add the selected item to, for example, the empty area of the input area 131a of the arrangement item input screen 130a.

  In addition to the above items, for example, an item indicating a supplier can be provided in the result display area 131c of the search result screen 130c. Then, the input / output unit 130 acquires purchase information (for example, lead time and cost) for each supplier set in the arrangement table 120a and other tables from the search result, and evaluates each supplier. Search results may be displayed in order.

As the evaluation method, for example, any one of the following methods is used.
(1) The lower the actual cost or planned cost or the difference between the actual cost and the planned cost of the cost cost item (for example, material cost, labor cost, cost, indirect cost and total of each cost) determined by the administrator, Take advantage.

  (2) The total of the planned or actual lead times of the items arranged as search components and the components of the corresponding arranged items, or the total difference between the planned and actual lead times is small. The better.

  (3) The total of the planned or actual lead times of all the unregistered items or the total difference between the planned lead time and the actual lead time is small among the components of the search result arrangement item and the corresponding arrangement item. The better.

(4) Based on the configuration table 110b and the arrangement table 120a, the number of components of the corresponding item is counted, and the smaller or larger the number of components, the more advantageous.
(5) According to other criteria, an evaluation score in an important process of each item and an evaluation score for each supplier are given, and the higher this evaluation score, the more advantageous.

  In addition, you may select arbitrary methods among said (1)-(5). Then, the input / output unit 130 displays suppliers with superior evaluation in order from the top based on the result of the evaluation. This is effective because it is possible to easily select a supplier that is likely to reduce the delivery date and cost in manufacturing the product.

  In this way, not only the registered items registered in the item table 110a but also unregistered items from the arrangement table 120a can be input from the search result, thereby saving the administrator input on the arrangement item input screen 130a. Convenience can be improved.

Next, details of processing executed in the computer 100 that executes the production management program of the present embodiment having the above-described configuration and data structure will be described.
FIG. 9 is a flowchart illustrating the procedure of the arrangement information generation process. In the following, the process illustrated in FIG. 9 will be described in order of step number.

  [Step S10] When a product order is received, the input / output unit 130 receives a product order corresponding to the product and outputs the product order to the product information generation unit 140. The product information generation unit 140 generates product information based on the product order acquired from the input / output unit 130. The product information generation unit 140 outputs the generated product information to the alternative LLC calculation unit 150.

[Step S <b> 20] The alternative LLC calculation unit 150 calculates an alternative LLC for MRP processing for each arrangement item included in the product information acquired from the product information generation unit 140.
[Step S30] The MRP processing unit 160 calculates a required amount for each order item included in the product information based on the calculation result of the alternative LLC of the alternative LLC calculation unit 150. Further, the MRP processing unit 160 calculates information such as the number of shortages and the production start date / delivery date of each ordered item based on the result of the required amount calculation and the production period of each ordered item. At this time, the MRP processing unit 160 uses the alternative LLC calculated by the alternative LLC calculation unit 150 in step S20 with respect to the registered items for the required amount calculation and the like. Further, the MRP processing unit 160 uses the part level number input on the arrangement item input screen 130a as an alternative LLC for unregistered items.

  [Step S40] The arrangement information generation unit 170 generates arrangement information based on the calculation result of the required amount and delivery date of the MRP processing unit 160. The arrangement information generation unit 170 stores the generated arrangement information in the arrangement information storage unit 120.

Below, the process of said step S10, 20 is demonstrated in detail in order.
FIG. 10 is a flowchart illustrating a procedure of product order reception processing. In the following, the process illustrated in FIG. 10 will be described in order of step number.

[Step S <b> 101] The input / output unit 130 outputs an arrangement item input screen 130 a to the monitor 11. The manager inputs information on the arranged items in accordance with the arranged item input screen 130a.
[Step S <b> 102] The input / output unit 130 determines whether or not a search keyword has been received from the search item input screen 130 b in the process of inputting an arrangement item. If a keyword is accepted, the process proceeds to step S103. If no keyword is received, the process proceeds to step S112.

[Step S103] The input / output unit 130 searches the item table 110a based on the keyword input to the search item input screen 130b.
[Step S104] The input / output unit 130 determines whether or not the keyword input on the search item input screen 130b exists in the item table 110a. If it exists, the input / output unit 130 acquires the attribute of the item corresponding to the keyword from the item table 110a, and the process proceeds to step S110. If not, the process moves to step S105.

[Step S105] The input / output unit 130 searches the arrangement table 120a based on the keyword input on the search item input screen 130b.
[Step S106] The input / output unit 130 determines whether or not the keyword input to the search item input screen 130b exists in the arrangement table 120a. If it exists, the input / output unit 130 acquires the attribute of the item corresponding to the keyword from the arrangement table 120a, and the process proceeds to step S110. If not, the process proceeds to step S107.

  [Step S107] The input / output unit 130 acquires the first n digits or n characters of the keyword input on the search item input screen 130b. Then, the arrangement table 120a is searched based on the acquired top information of the keyword. Here, the value of n is a value preset in the input / output unit 130 by the administrator.

  [Step S <b> 108] The input / output unit 130 determines whether information that matches the information at the head of the keyword exists in the arrangement table 120 a. If it exists, the input / output unit 130 acquires information that matches the information at the beginning of the keyword from the arrangement table 120a, and the process proceeds to step S110. If not, the process moves to step S109.

  [Step S109] The input / output unit 130 outputs to the monitor 11 a message indicating that the item corresponding to the keyword input on the search item input screen 130b does not exist in the item table 110a and the arrangement table 120a. In this case, the manager newly inputs information on the arranged items according to the arranged item input screen 130a. That is, the process proceeds to step S101.

  [Step S110] The input / output unit 130 outputs a list of items corresponding to the input keyword acquired from the item table 110a or the arrangement table 120a on the search result screen 130c. At this time, the input / output unit 130 may determine the display order of the items in the list based on, for example, the evaluation result of the supplier or the like.

  [Step S111] When the input / output unit 130 detects that the input button 132c is pressed on the search result screen 130c, the input / output unit 130 reflects the selected item in an empty area of the arrangement item input screen 130a.

  [Step S <b> 112] When the input / output unit 130 detects that the confirm button 133 a is pressed on the arrangement item input screen 130 a, the input / output unit 130 outputs the product order input on the arrangement item input screen 130 a to the product information generation unit 140. The product information generation unit 140 generates product information based on the product order acquired from the input / output unit 130. Then, the product information generation unit 140 outputs the generated product information to the alternative LLC calculation unit 150.

  As described above, on the arrangement input screen 130a, not only the items registered in the item table 110a in advance but also the items arranged in the past are searched by the keyword, and the attribute information of the arrangement is obtained from the search result. Can be entered. Furthermore, by searching not only attribute information that completely matches the keyword but also attribute information that partially matches (for example, a part of information at the top), it is possible to match without knowing exactly the keywords of unregistered items. Expected items can be acquired and prompted for input to the administrator.

  Thereby, the convenience of the input operation to the arrangement input screen 130a of the manager is improved. Moreover, in the arrangement table 120a, it is possible to prevent items having the same attribute from being set as different items.

FIG. 11 is a flowchart illustrating the procedure of the alternative LLC calculation process. In the following, the process illustrated in FIG. 11 will be described in order of step number.
[Step S <b> 201] The alternative LLC calculation unit 150 acquires product information from the product information generation unit 140.

  [Step S <b> 202] The alternative LLC calculation unit 150 determines whether or not there is a target product for required amount calculation, that is, a registered item, in the acquired product information. For example, the alternative LLC calculation unit 150 may determine whether the corresponding item is a target item for the required amount calculation by referring to the MRP classification of the registered item pointed out as the arranged item on the arranged item input screen 130a. it can. If it exists, the process proceeds to step S203. If not, the process ends.

  [Step S203] The alternative LLC calculation unit 150 obtains the lowest part level number among the part level numbers of unregistered products included in the product order, that is, the highest part level number. The alternative LLC calculation unit 150 sets a value obtained by adding 1 to the component level number as an addition value to the LLC for calculating the alternative LLC.

  [Step S204] The alternative LLC calculation unit 150 adds the added value acquired in step S203 to the LLC of all the registered items and its components included in the product information, thereby obtaining an alternative LLC.

  In this way, the substitute LLC calculation unit 150 sets the substitute LLC of the registered item and its component to a value larger than the part level number of the unregistered item (that is, a value indicating a lower hierarchy than the unregistered item). To do. The MRP processing unit 160 can identify the configuration between the items without contradiction by using this alternative LLC when calculating the required amount of the registered items, and can correctly specify the calculation order. .

  FIG. 12 is a schematic diagram illustrating an example of a hierarchical structure of arrangement items when product information is received. In the following description, it is assumed that the arrangement item input screen 130a in FIG. 7 is confirmed and the product information generation unit 140 receives product information. Further, an item whose product name is “product name X” is referred to as “item X”.

  In this case, as the hierarchical structure of the product information, the unregistered item Y and the registered item A are set as components one level lower than the unregistered item X (level L0) (level L1). Further, unregistered item Z is set as a component one level lower than unregistered item Y (level L2), and registered item A is set as a component one level lower than unregistered item Z (level L3). The In addition, according to the configuration table 110b, the registered items A and D are registered items C and D as the lower-level components (in FIG. 12, the registered items C and D expanded by the item information are indicated by dotted lines). ). Further, according to the configuration table 110b, the registration item C is set as the registration item C that is one level lower. For the registered items A, C, and D, the corresponding LLC is set in the item table 110a, the LLC of the item A is 0, the LLC of the item C is 2, and the LLC of the item D is 1.

  At this time, in executing the required amount calculation, it is conceivable that the calculation is performed by regarding the part level number L0 of the unregistered item X as LLC = 0. However, since the registered item A also has LLC = 0, the required amount calculation is executed simultaneously with the highest item X. That is, the required amount calculation of the lower item is performed without completing the required amount calculation of the upper item, and a correct result cannot be obtained.

  FIG. 13 is a schematic diagram illustrating an example of an alternative LLC at the time of required amount calculation. The substitute LLC calculation unit 150 obtains the maximum part level number “2” of the unregistered item included in the product order and calculates the added value 3 obtained by adding 1 to the substitute LLC for calculating the registered item. To do. Further, the alternative LLC calculation unit 150 acquires the LLC of each registered item and its component from the item table 110a, adds the added value 3 to each acquired LLC, and determines the alternative LLC of each registered item and its component. To do.

  Then, the MRP processing unit 160 uses each component level number included in the product information as an alternative LLC for the unregistered items X, Y, and Z when calculating the required amount. Further, the MRP processing unit 160 uses the alternative level number calculated by the alternative LLC calculation unit 150 as the alternative LLC of the registered items A, C, and D. That is, regarding the alternative LLC of unregistered items X, Y, and Z, item X is set to 0, item Y is set to 1, and item Z is set to 2. Then, regarding the alternative LLC of the registered items A, C, and D, the item A is 3, the item C is 5, and the item D is 4.

  In this way, the upper and lower levels of the alternative LLC are not reversed between the registered item and the unregistered item, and the MRP processing unit 160 can calculate the required amount in the correct order. Further, regarding registered items, the LLC is uniformly increased by a specific added value, so that the item hierarchy in the item table 110a can be maintained.

  In the above description, the alternative LLC calculation unit 150 uses the value obtained by adding 1 to the maximum part level number included in the product order as the addition value for the LLC, but the alternative LLC of the registered item is the part level of the unregistered item. Any other value may be used as long as the added value is larger than the number. For example, a large value (such as 100) that exceeds the value that can be taken as the part level number may be added to the LLC of the registered item as an added value.

  FIG. 14 is a diagram illustrating a data structure example of an arrangement table generated based on the MRP processing result. The arrangement table 120b is stored in the arrangement information storage unit 120. The arrangement table 120b is arrangement information for arrangement items input on the arrangement input screen 130a. Each piece of information in the arrangement table 120b is generated by the arrangement information generation unit 170 based on the calculation result of the MRP processing unit 160 and added to the arrangement table 120b. Since the items indicating the attributes of the items in the arrangement table 120b are the same as those in the arrangement table 120a, the description thereof is omitted.

  The arrangement information generation unit 170 sets the arrangement quantity, production start date, and the like for each arrangement item based on the calculation result of the required amount and delivery date of the MRP processing unit 160 in the arrangement table 120b. Further, the arrangement information generation unit 170 correctly creates arrangements for the components of the registered item A (registered items C and D) input on the arrangement item input screen 130a based on the calculation result of the MRP processing unit 160. Can do.

  In addition to the items shown in FIG. 14, the arrangement table 120b may be provided with information such as the shortage of inventory and the arrangement destination. Then, based on the arrangement table 120b, an ordering instruction and a manufacturing instruction for each arrangement item are issued.

  As described above, the MRP processing unit 160 performs the calculation in the correct order by executing the MRP process by the alternative LLC even when the arrangement item includes the item registered in the item information and the unregistered item. Can do.

  In addition, since arrangements can be created even for items that are not registered in the item information, for example, since it is not repeatedly manufactured like individual order-made products, it is particularly effective when creating arrangements for items that are not registered in the item information. It is. In addition, when entering an arrangement item, it is possible to search for item information from past arrangement information even if it is not registered in the item information, and to select and enter an unregistered item from the search results. Will improve. In addition, this makes it possible to prevent an unregistered item having the same attribute (product name or specification) from being newly set as a different item.

  The production management program, production management apparatus, and production management method of the present invention have been described based on the illustrated embodiment. However, the present invention is not limited to this, and the configuration of each part has the same function. Any configuration can be substituted. Moreover, other arbitrary structures and processes may be added to the present invention. Further, the present invention may be a combination of any two or more configurations (features) of the above-described embodiments.

  The above processing functions can be realized by a computer. In that case, a program describing the processing contents of the functions that the computer should have is provided. By executing the program on a computer, the above processing functions are realized on the computer.

  The program describing the processing contents can be recorded on a computer-readable recording medium. Examples of the computer-readable recording medium include a magnetic recording device, an optical disk, a magneto-optical recording medium, and a semiconductor memory. Magnetic recording devices include HDDs, flexible disks (FD), magnetic tapes (MT) and the like. Optical discs include DVD (Digital Versatile Disc), DVD-RAM, CD-ROM (Compact Disc-Read Only Memory), CD-R (Recordable) / RW (ReWritable), and the like. Magneto-optical recording media include MO (Magneto-Optical disk).

  When the program is distributed, for example, a portable recording medium such as a DVD or CD-ROM in which the program is recorded is sold. It is also possible to store the program in a server computer and transfer the program from the server computer to another computer via a network.

  The computer that executes the program stores, for example, the program recorded on the portable recording medium or the program transferred from the server computer in its own storage device. Then, the computer reads the program from its own storage device and executes processing according to the program. The computer can also read the program directly from the portable recording medium and execute processing according to the program. In addition, each time the program is transferred from the server computer, the computer can sequentially execute processing according to the received program.

It is a figure which shows the outline | summary of this Embodiment. It is a figure which shows the hardware constitutions of the computer of this Embodiment. It is a block diagram which shows the function of the computer of this Embodiment. It is a figure which shows the data structure example of an item table. It is a figure which shows the example of a data structure of a structure table. It is a figure which shows the data structure example of an arrangement table. It is a figure which shows the example of an input screen of arrangement items. It is a figure which shows the example of the screen for a search. It is a flowchart which shows the procedure of the production | generation process of arrangement information. It is a flowchart which shows the procedure of the reception process of a product order. It is a flowchart which shows the procedure of the calculation process of alternative LLC. It is a schematic diagram which shows the hierarchical structure of the arrangement goods at the time of product information reception. It is a schematic diagram which shows alternative LLC at the time of required amount calculation. It is a figure which shows the example of a data structure of the arrangement table produced | generated based on the MRP process result.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Computer 1a Item information storage means 1b Product information generation means 1c Item level provision means 1d Material requirement management means 1e Arrangement information storage means

Claims (6)

A production management program that performs production management of parts by item using an item level number assigned to each item according to the dependency relationship of the item of the part,
Computer
Item information storage means for storing item information including the item level number for a plurality of items;
In response to a product order input, a product having a hierarchical part structure including a part of an item already registered in the item information stored in the item information storage means and a part of an item not registered in the item information is defined. Product information generating means for generating the product information
For each item of parts included in the product information generated by the product information generating means, the level in which all the product item level numbers used in production management of the product appear as the parts of the item for the unregistered items And for the registered items, the value common to all the products is greater than the lowest layer number in which the parts of the unregistered item appear in the item level number registered in the item information. Item level granting means to give a number with
Requirements management means for calculating material requirements for each item in the order according to the item level number in all products given by the item level granting means;
Production management program characterized by functioning as   The item level assigning unit adds the common value added to the item level number registered in the item information for the registered item to 1 or more in the lowermost layer number where the parts of the unregistered item appear. The production management program according to claim 1, wherein the predetermined value is added. The computer further functions as arrangement information storage means for storing arrangement information for performing an ordering instruction and a manufacturing instruction for each item of parts included in the product information,
The product information generation means refers to the arrangement information stored in the arrangement information storage means, and for each item of the parts included in the product order, the item included in the arrangement information matches the item attribute or If there is a partially matching item, the product information is generated based on the arrangement information.
The production management program according to claim 1.   The product information generation means, for each item of the parts included in the product information, when there are a plurality of items whose item attributes match or partially match in the items included in the arrangement information, 4. The production management program according to claim 3, wherein the supplier is determined based on the evaluation of each supplier, and the product information is generated based on the determined supplier. A production management device that performs production management of parts on an item-by-item basis using an item level number assigned to each item according to the dependency of the item of the part,
Item information storage means for storing item information including the item level number for a plurality of items;
In response to a product order input, a product having a hierarchical part structure including a part of an item already registered in the item information stored in the item information storage means and a part of an item not registered in the item information is defined. Product information generating means for generating the product information
For each item of parts included in the product information generated by the product information generating means, the level in which all the product item level numbers used in production management of the product appear as the parts of the item for the unregistered items And for the registered items, the value common to all the products is greater than the lowest layer number in which the parts of the unregistered item appear in the item level number registered in the item information. Item level assigning means for assigning a number to which
A requirement management means for calculating a material requirement for each item in an order according to the item level number in all the products given by the item level granting means;
A production management device comprising: A production management method of a production management device that performs production management of parts by item using an item level number assigned to each item according to the dependency relationship of the item of the part,
The product information generation means stores the item information including the item level number for a plurality of items in response to the input of the product order. The item information storage means stores the item parts already registered in the item information and the item information. Generate product information that defines products with a hierarchical part structure that includes parts of unregistered items in
The item level assigning means, for each item of the parts included in the product information generated by the product information generating means, as the item level number in all products used in the production management of the product, A hierarchical number of the hierarchy in which the part of the item appears is assigned, and for the registered item, all items higher than the lowest hierarchy number in which the part of the unregistered item appears in the item level number registered in the item information. Give a number with a common value in the product,
The requirement management means calculates the material requirement for each item in the order corresponding to the item level number in all the products given by the item level granting means.
A production management method characterized by that.

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