JP2002073750A - Article supply planning device, article supply planning method, and article supply planning program - Google Patents

Abstract

(57) [Summary] [Problem] To formulate a more appropriate article supply plan in consideration of the time required from order receipt to delivery of a supply source. SOLUTION: For an input ordering process An of an ordering source A and an order quantity Xn, the lead times t1 and t2, which take into account the time required to produce articles and the storage time, are shifted before the ordering process An. Then, the supply steps Bn and Cn of the supply sources B and C are set as the same span as the ordering step An. The order quantity Xn is distributed to the supply sources B and C using the changeable distribution ratio αn, and the distributed order quantity is distributed in proportion to the lead times t1 and t2 from the ordering process An at the same time. The planned supply amounts Yn and Zn for the processes Bn and Cn are calculated. By sequentially changing the distribution ratio αn, the planned supply amount Yn,
At the same time as calculating Zn, the profit index at that time is calculated, and the planned supply amounts Yn, Zn of the distribution ratio αn at which the profit index is the maximum are set as plan values.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an article supply planning device, an article supply planning method, and a program for article supply planning. More specifically, the present invention relates to an article supply plan for an article order from an order source. The present invention relates to an article supply planning device, an article supply planning method, and a computer-readable program that causes a computer to function as an article supply planning apparatus.

[0002]

2. Description of the Related Art Conventionally, as an article supply planning system of this kind, there is a system for encouraging each factory to cooperate so that parts and raw materials from a related parts factory are supplied at an appropriate timing in response to an order from a customer. It has been proposed (for example, JP-A-8-123535). In this system,
A network is constructed by a plan coordination system installed at each factory, and in response to a request from a factory on the network made via the plan coordination system, the factory that receives the request prepares the production plan of the factory according to the planning system. , The timing of supply of parts and raw materials can be optimized.

[0003]

However, in such a cooperative system between factories, it is difficult to make a more appropriate supply plan because the time required from the ordering of the supplier to the delivery is not taken into account. . Also, since the overall cost of the product and inventory management are not taken into account,
It was also difficult to plan for a larger profit for the enterprise.

An object of the present invention is to provide an article supply planning device and an article supply planning method in which a more appropriate article supply plan is created in consideration of the time required from order receipt to delivery of a supply source. Another object of the present invention is to provide an article supply plan drafting apparatus and an article supply plan drafting method for drafting an article supply plan so that the profit of a business entity is increased.

[0005]

Means for Solving the Problems and Action / Effects Thereof An article supply planning device, an article supply planning method and an article supply planning program according to the present invention are intended to achieve at least a part of the above objects. The following measures were taken.

An article supply planning apparatus according to the present invention is an article supply planning apparatus for planning an article supply from a plurality of suppliers in response to an article order from an orderer. Order quantity distributing means for distributing the order quantity to the plurality of suppliers, and shifting from the ordering process of the order source by the lead time which is the time required for the delivery of the order of the articles of the plurality of suppliers. Supply step setting means for setting a supply step corresponding to the ordering step for each supply source,
And distributing, based on the lead time, an order quantity distributed by the order quantity distributing means to a supply source for which the supply step is set in an order step overlapping with the set supply step in time. And a supply plan amount setting means for setting the supply plan amount of the above.

In the article supply planning device of the present invention,
The supply process corresponding to the ordering process is set for each supplier by shifting from the ordering process of the ordering source by the lead time which is the time required for the delivery of the order of the goods of a plurality of sources from the ordering source. The order quantity distributed to the supply source for which the supply process is set in the order process that temporally overlaps the supply process is distributed based on the lead time to set the supply plan amount of each supply process. Since the lead time, which is the time required for the order to be delivered, is taken into account, the timing of delivery and the timing of production of articles can be made more appropriate. That is, a more appropriate article supply plan can be drafted.

In the article supply planning device according to the present invention, economic index calculating means for calculating a business management index from the ordering of the article from the order source to the delivery of the ordered article, and the calculated company An order quantity distribution adjusting means for adjusting the order quantity distribution by the order quantity distributing means so as to maximize the management index may be provided.
In this case, the order quantity is distributed so that the corporate management index is maximized, so that the article supply plan can contribute to the management of the corporate entity. Here, a short-term profit index or a long-term profit index can be used as the corporate management index, and various indexes can be used. In the article supply planning device of this aspect of the present invention, the order quantity distribution adjusting means adjusts the distribution of the order quantity by the order quantity distribution means within a supplyable range set for each of the plurality of supply sources. May be used. In this way, the order quantity can be distributed so that the corporate management index is maximized with the supply range at the supplier being a constraint.

[0009] The program for planning an article supply plan of the present invention has a gist that it can be read by a computer that causes a computer to function as the article supply planning apparatus according to any one of the embodiments of the present invention.

According to the article supply planning program of the present invention, by causing a computer to read the program, the computer can function as the article supply planning apparatus according to any of the embodiments of the present invention.

An article supply planning method according to the present invention is an article supply planning method for creating an article supply plan from a plurality of suppliers in response to an article order from an orderer. Is distributed to the plurality of suppliers, and the order process of the order source is shifted from the order process of the order source by a lead time which is a time required for delivery of the order of the articles of the plurality of sources. The supply order to be set is set for each supply source, and the order amount distributed to the supply source for which the supply process is set in the ordering process that temporally overlaps with the set supply process is based on the lead time. The gist of the present invention is to distribute and to set a supply plan amount of the supply process to draft a supply plan of articles.

According to the article supply planning method of the present invention, the timing of delivery and the timing of production of articles are made more appropriate in consideration of the lead time which is the time required for order delivery. An article supply plan can be developed.

In the article supply planning method according to the present invention, a business management index from the ordering of the article by the ordering party to the delivery of the ordered article is calculated, and the calculated business management index is maximized. The distribution of the order quantity to the plurality of supply destinations may be adjusted so as to draft the supply plan of the articles. In this case, the order quantity is distributed so that the corporate management index is maximized, so that the article supply plan can contribute to the management of the corporate entity. Here, a short-term profit index or a long-term profit index can be used as the corporate management index, and various indexes can be used. In the article supply planning device according to the aspect of the present invention, the distribution of the order amount to the plurality of destinations may be adjusted within the supplyable range set for each of the plurality of sources. . In this way, the order quantity can be distributed so that the corporate management index is maximized with the supply range at the supplier being a constraint.

[0014]

Next, embodiments of the present invention will be described with reference to examples. FIG. 1 is a configuration diagram showing, as functional blocks, an outline of a configuration of an article supply planning device 20 according to an embodiment of the present invention, and FIG. 2 is a configuration illustrating a hardware configuration of the article supply planning device 20 of the embodiment. FIG.

As shown in FIG. 2, the article supply planning device 20 of the embodiment has a hardware configuration as a general-purpose computer centered on a CPU 42 as a central processing unit. Bus 4 connected to CPU 42
Reference numeral 4 denotes a cache memory 46, its cache controller 48, a main memory 50, a graphics controller 52 to which a CRT 54 is connected, and a keyboard interface 5 to which a keyboard 58 and a mouse 60 are connected.
6, Hard disk drive 64 and floppy (registered trademark)
The input / output interface 62 to which the disk device 66 and the like are connected is connected.

The article supply planning device 20 of the embodiment is also described.
As shown in FIG. 1, as functional blocks, a data storage unit 22 for storing various data at each supply source;
A data input unit 24 for inputting the order quantity and constraint conditions for each ordering process of the ordering source, and an index calculating unit 26 for calculating the profit index based on the cost required for the supply of the goods of each supplier.
And a constraint condition determination unit 28 that determines whether constraint conditions such as a supplyable range of the supply source are satisfied, and a profit index that is maximized while satisfying the constraint on the input order quantity of each order process of the order source. And an order quantity distribution adjusting unit 30 for distributing the order to each supplier, and the supply process is shifted for each supplier by shifting the order process from the ordering process by a lead time, which is the time required for delivery of the order in the ordering process of the orderer. A supply process setting unit 32 to be set, and a supply plan amount calculation for distributing an order amount distributed to each supply source in an order process overlapping with the supply process in time based on a lead time and calculating a supply plan amount in each supply process. And a plan output unit 36 that outputs a list of the order quantity in each ordering process and the order quantity determined for the supply process of each supplier as a list. Each functional unit included in the article supply planning device 20 of the embodiment includes:
The hardware configuration illustrated in FIG. 2 described above and software described later are integrally realized.

The data storage unit 22 stores a lower limit value and an upper limit value for setting a suppliable range in each supply step of each supply source, a cost associated with supply of an article of each supply source, such as a material cost per article, Process data consisting of data on costs such as labor costs, equipment costs, and inventory storage costs, and data on time such as the time required to produce goods and storage time;
It stores transportation data relating to transportation costs and transportation time associated with the shipment of the goods, inventory target value data as stock targets for each supplier, sales data such as the selling price of the goods, and the like.

The index calculator 26 includes an order quantity distribution adjuster 30
Calculates a profit index based on the process data and the transport data stored in the data storage unit 22 based on the order quantity distributed to each supplier when requested by the Returns the calculated profit index. As a return index, a commonly used return on total capital (ROA)
= (Revenue-expenditure) / asset) or an index obtained as the product of the power of generating profit and the speed of generating profit (S-ROA = (sales-production input material cost-business cost) / inventory material cost) Etc. can also be defined and used. Further, another profit index may be defined and used. The constraint condition determination unit 28 determines whether the distribution of the order quantity by the order quantity distribution adjustment unit 30 satisfies the constraint conditions such as the suppliable range set for each supply source. Order quantity distribution adjustment unit 30
Changes the distribution of the order quantity for each ordering process of the order source input by the data input unit 24 within the range of the constraint set for each supplier based on the determination of the constraint determining unit 28;
The distribution amount that maximizes the profit index calculated by the index calculation unit 26 is determined.

The supply step setting section 32 includes a data storage section 22
Calculates lead time, which is the time it takes to deliver an item in the ordering process of the orderer based on the process data including the time required to produce the item and the storage time, etc. Then, the supply process is shifted from the ordering process by this lead time and set.
The supply schedule calculation unit 34 determines the order quantity for each supply step by proportionally using the lead time to distribute the order quantity distributed to each supply source of the order step overlapping the set supply step in time.

Next, the operation of the article supply planning device 20 of the embodiment configured as described above will be described. FIG. 3 is a flowchart illustrating an example of a supply planning process routine executed by the article supply planning device 20 according to the embodiment.
FIG. 4 is an explanatory diagram exemplifying a situation in which a plan for supplying articles from the two suppliers B and C to the order quantity Xn for each ordering process An of the ordering party A is made. Hereinafter, the article supply planning device 2 of the embodiment according to the supply plan processing routine of FIG.
A state in which a supply plan as a specific example of FIG.

When the supply planning process routine is executed, the CPU 42 of the article supply planning device 20 first inputs the ordering process An of the ordering source A and the order quantity Xn of each ordering process An from the data input unit 24 such as the keyboard 58. Is executed (step S100). Ordering process An of ordering source A
Is input as a span, for example, in units of months, weeks, days, or in units of three months or years. When the ordering process An of the ordering source A and the order quantity Xn of each ordering process An are input, the data including the data relating to the time required to produce the articles stored in the data storage unit 22 and the time such as the storage time are included. Supply process Bn, Cn of supply sources B, C from process data
The lead times t1 and t2 are calculated as the time required until delivery for the order of the goods in (1) (step S102), and the supply processes Bn and Cn of the supply sources B and C are shifted from the ordering process An by the lead times t1 and t2. To set the same span as that of the ordering process An (step S1).
04).

Next, the order quantity Xn is initially distributed to the supply sources B and C using the initial value of the distribution ratio αn set in each ordering process An (step S106). Here, any value may be used as the initial value of the distribution ratio αn.

Subsequently, the distributed order quantity is set as a proportional distribution based on the lead times t1 and t2 from the ordering process An at the same time, and the respective supply processes Bn,
The calculation is performed as the planned supply amounts Yn, Zn of Cn (step S108), and the profit index is calculated based on the calculated planned supply amounts Yn, Zn (step S110).

[0024]

(Equation 1)

Then, the distribution ratio αn is changed by a predetermined amount within the range of the constraint condition (step S112). Until the change is completed (step S114), steps S108 to S108 are executed.
The process of 112, that is, the process of calculating the planned supply amounts Yn, Zn and the profit index using the changed distribution ratio αn is repeated.

When the change of the distribution ratio αn is completed, the distribution ratio αn at which the calculated profit index is maximized and the planned supply amounts Yn and Zn at that time are output as plan values (step S11).
6), end this routine.

According to the article supply planning device 20 of the embodiment described above, a more appropriate article supply plan is created in consideration of the lead time, which is the time required from the order receipt and delivery of the supply sources B and C. Can be. Further, the distribution ratio αn is changed within the range of the constrained conditions such as the supply possible range to obtain the distribution ratio αn that maximizes the profit index, and based on the obtained distribution ratio αn, each supply process Bn in the supply sources B and C is performed. , Cn, the supply plan amounts Yn and Zn are calculated, so that an article supply plan can be made so that the profit of the business entity is further increased.

In the article supply planning device 20 of the embodiment,
Two suppliers B and C for an order from one supplier A
Although the description has been made on the assumption that the order is supplied from two or more order sources, the order may be supplied from two or three or more sources. In this case, the lead time of each supply source may be set for each order of each order source, or the lead time of each supply source may be fixed.

In the article supply planning device 20 of the embodiment,
Although the distribution ratio αn at which the profit index is maximized and the planned supply amounts Yn, Zn at that time are set as plan values, they may be distributed regardless of the profit index.

Although the embodiment has been described using the article supply planning device 20 as one embodiment of the present invention, any method using the same planning method as the supply planning processing routine illustrated in FIG. 3 may be used. Any method may be used, or a computer-readable program that causes a computer to function as the article supply planning device 20 of the embodiment or the article supply planning device of a modification thereof. Of course, a storage medium such as a CD-ROM or a DVD-ROM in which such a program is stored may be used.

The embodiments of the present invention have been described with reference to the embodiments. However, the present invention is not limited to these embodiments, and various embodiments may be made without departing from the scope of the present invention. Of course, it can be carried out.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing an outline of a configuration of an article supply planning device 20 according to an embodiment of the present invention as functional blocks.

FIG. 2 is a configuration diagram illustrating a hardware configuration of the article supply planning device 20 according to the embodiment;

FIG. 3 is a flowchart illustrating an example of a supply planning process routine executed by the article supply planning device 20 according to the embodiment.

FIG. 4 is an explanatory diagram exemplifying a state in which an article supply plan of two supply sources B and C is made with respect to an order quantity Xn for each ordering process of an order source A;

[Explanation of symbols]

20 goods supply planning device, 22 data storage unit, 2
4 data input section, 26 index calculation section, 28 constraint condition determination section, 30 order quantity distribution adjustment section, 32 supply process setting section, 34 supply plan quantity calculation section, 36 plan output section, 42
CPU, 44 bus, 46 cache memory, 48
Cache controller, 50 main memory, 52
Graphics controller, 54 CRT, 56 keyboard interface, 58 keyboard, 60 mouse, 62 input / output interface, 64 hard disk drive, 66 floppy disk drive.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Eiji Kojima 1 Toyota Town, Toyota City, Aichi Prefecture Inside Toyota Motor Corporation (72) Inventor Hiroyoshi Suzuki 1 Toyota Town, Toyota City, Aichi Prefecture Inside Toyota Motor Corporation (72) Inventor Kentaro Okubo 1st Toyota Town, Toyota City, Aichi Prefecture Toyota Motor Corporation F term (reference) 5B049 BB07 CC05 CC21 CC27

Claims (7)

[Claims] 1. An article supply planning device for planning an article supply from a plurality of suppliers in response to an article order from an orderer, the article supply planning apparatus comprising: Order amount distributing means for distributing the order, and a supply process corresponding to the order process by shifting from the order process of the order source by a lead time which is a time required until delivery for the order of the plurality of sources. Supply step setting means for setting, for each supply source, an order quantity distributed by the order quantity distribution means to a supply source in which the supply step is set in an order step overlapping with the set supply step in time. And a supply planning amount setting means for setting a supply planning amount in the supply step. 2. An article supply planning device according to claim 1, wherein: an economic index calculating means for calculating a business management index from ordering of the article from the order source to delivery of the ordered article; An article supply planning device comprising: an order quantity distribution adjusting means for adjusting the order quantity distribution by the order quantity distributing means so that the calculated corporate management index is maximized. 3. The article according to claim 2, wherein the order quantity distribution adjusting means adjusts the distribution of the order quantity by the order quantity distribution means within a suppliable range set for each of the plurality of supply sources. Supply planning equipment. 4. A computer-readable program for causing a computer to function as the article supply planning device according to claim 1. 5. An article supply planning method for planning an article supply from a plurality of suppliers in response to an article order from an order source, the method comprising: And a supply process corresponding to the ordering process is shifted for each supply source from the ordering process of the ordering source by a lead time that is a time required for delivery of the order of the plurality of suppliers for the order. Setting, distributing, based on the lead time, the distributed order quantity to the supply source for which the supply step is set in an order step overlapping with the set supply step in time, and supplying the supply step. An article supply plan drafting method for drafting an article supply plan by setting a planned amount. 6. An enterprise management index from the ordering of the goods from the ordering source to the delivery of the ordered goods is calculated, and the calculated business management index is transmitted to the plurality of supply destinations so that the calculated business management index is maximized. 6. The article supply planning method according to claim 5, wherein the article supply plan is created by adjusting the distribution of the order quantity. 7. The article supply planning method according to claim 6, wherein the adjustment of the distribution of the order quantity to the plurality of supply destinations is performed within a supplyable range set for each of the plurality of supply sources.