JPH09225786A - Production scheduling support system and its method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simultaneously refer the loaded condition of each process and the filled condition of the material in one screen. SOLUTION: The loaded condition and the sufficiency condition of the material are simultaneously referred in a screen of a load peak graph 21. The loaded condition is expressed by the load value such as the required amount or the man hour as the load peak, and the capacity is expressed by the capacity line. In the sufficiency condition of the material the load peak is expressed by color of two layers of the order in which the material is filled and the order in which the material is insufficient. As for the sufficiency/insufficiency of the material, the possible number of the present process is obtained from the component information 17 based on the information 15 on the number of intermediate products and the inventory sufficient in the lower processes for each process from the lowest process, the required number is furnished by the order from the possible number, and a judgment is made by the application.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a production planning support system and method, and more particularly to a production planning support system and method for supporting production planning and load planning in a factory where a plurality of parts are assembled to manufacture a product. Regarding

[0002]

2. Description of the Related Art In conventional production management, a material requirement plan and a load plan are separated, and therefore, there are separate systems for executing them. For example, Japanese Patent Laid-Open No. 04-1
According to Japanese Patent No. 22557, a system for determining whether or not a production plan can be executed based on the stock status is disclosed as a system for realizing a required plan.

As a system for realizing a load plan, for example, in Japanese Patent Laid-Open No. 04-257967,
A load adjustment simulation is disclosed in which the load of a process is referenced for each process and for each time axis.

[0004]

As described above, conventionally,
In the production management work, the material requirement plan and the load plan are separated, so in order to make a feasible production plan,
It was necessary to alternate load planning and requirement planning.

Since the load plan and the required plan are alternately performed, it takes time to delay the delivery date answer, or it is not possible to verify at the same time, so it is easy to overlook the plan of overload and material procurement failure. There was a problem that the production plan could not be realized.

It is an object of the present invention to provide a production planning support system and method capable of simultaneously verifying a material requirement plan and a load plan and solving the above problems.

[0007]

The production planning support system of the present invention comprises a load developing means for developing production load information based on plan information, process procedure information, calendar information, and capability information, and an inventory of materials. Allocation means for calculating a producible allocation result based on the information, unstocked information, configuration information, and the load information, an available start date calculating means for calculating a production startable date according to the allocation result, and an allocation result according to the allocation result. It has a pile graph display means for displaying a load mountain graph showing the excess or deficiency of materials for each production unit, and a load mountain moving means for adjusting the load by referring to the load mountain graph and reflecting the load information. Composed.

Further, in the production planning support system of the present invention, the allocation means is configured to calculate the allocation result according to the allocation priority order registered in advance.

The production planning support method of the present invention is
Calculate production load information based on plan information, process procedure information, calendar information, and capacity information, and calculate producible allocation results based on material inventory information, unstocked information, configuration information, and the load information. Then, it is realized by simultaneously displaying the production load status and the material sufficiency status by a load mountain graph showing the excess or deficiency status of the material for each production unit according to the allocation result.

Further, in the production planning support method of the present invention, in the production planning support method, the load is moved by referring to the load mountain graph to correct the load information, and the allocation is made based on the load information. Correct the result, calculate the number of production and the start date that can be synchronized with the movement of the load,
It is realized by adjusting the production plan while simultaneously referring to the production load situation and the material satisfaction situation.

Further, in the production planning support method of the present invention, the allocation result is calculated according to the allocation priority order registered in advance.

As described above, the present invention is realized by adding a function for verifying the material satisfaction status to the load adjustment simulation.

That is, first, load information for displaying a load pile graph is generated based on standard information such as calendar information, capability information, configuration information, and production plan information.

Next, in the lowest step of the configuration information, the manufacturable number as the material sufficient amount is calculated from the inventory information of the materials required in the step, the unstocked information and the configuration information. Like the lower process, the upper process calculates the number of products that can be produced as a sufficient material from the inventory information of the materials required in that process, unstocked information, and configuration information, but the required materials are intermediate products. If there is, calculate based on the number of intermediate products that can be produced in the lower process. At this time, the allocation priority order follows the priority order determined in advance by the allocation priority input means.

Then, the production plan in which the material is sufficient and the production plan in which the material is out of stock are divided into two layers and displayed in the piled graph.

Next, the load peak moving means moves the load peak on the load peak graph to a designated date or a designated work center. Here, each time the load mountain is moved by the load mountain moving means, the allocation means and the possible start date calculating means are automatically re-executed, and the producible number and the possible start date are recalculated in synchronization with the movement of the load. As a result, the information recalculated in synchronization with the load mountain movement is always displayed on the load mountain graph.

[0017]

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described below with reference to the drawings.

FIG. 1 is an explanatory view showing an embodiment of the present invention. In the figure, the input information is the plan information 11, the process procedure information 12, the calendar information 13, the capability information 14, the inventory information 15, the unstocked information 16, and the product component configuration information 17, and the output information is the load mountain graph 21 ( 2) and the available date 22 (see FIG. 3).

In FIG. 1, the load information 31 generated by the load developing means (S1) is added to the load information 31 obtained by the allocating means (S2) and the available start date calculating means (S3). In addition, the process load and material sufficiency information are displayed by the stacking graph display means (S4). When the load mountain moving means (S5) moves the load on the displayed load mountain graph 21, the allocation means (S2) is executed for the moved schedule, and the load and material sufficiency information is also changed.

The load developing means (S1) is a load mountain graph 21.
Load information 31 for displaying is generated. The input information is plan information 11, process procedure information 12, capability information 14, and calendar information 13. The output information is the load information 31.
The plan information includes the delivery date and quantity of each order, the starting date of each process of the order, the delivery date, and the quantity. The process procedure information is information regarding the process procedure. The capacity information is information on the production capacity of each process. This production capacity is a value of how much can be produced in the process assuming that the material is sufficient. The calendar information is information on working / non-working on calendar days.

The load developing means (S1) generates load information 31 for each step of each order based on these pieces of information. The load information 31 is information for generating a load mountain to be stacked in the load mountain graph shown in FIG.

The allocation means (S2) allocates materials for each product in each process. Input information is load information 31, inventory information 1
5, non-arrival information 16, configuration information 17, and priority 33. The output information is the allocation result 32. The inventory information 15 and the unstocked information 16 are provided for each process and product. Inventory information 15
If the unstored information 16 is managed collectively, allocation is performed according to the allocation priority registered by the allocation priority input means (S6). The configuration information includes parent-child information of parts, unit quantity,
Information such as manufacturing and procurement lead times. As the priority order 33, the allocation priority for each product of the stock and unprocessed process, and the allocation priority for allocation are registered.

The allocating means (S2) sequentially obtains the possible number of products for each process in the lower process, and allocates the available number. The possible number is calculated for each bucket based on the configuration information from the stock and unstocked information assigned to each process product and the number of intermediate products that can be manufactured in the lower process. The possible number of products in the lowest process is the inventory information and unstocked information for each process,
It is calculated for each bucket based on the configuration information. The allowable number here does not take into consideration the production capacity of the process. The allocation for the possible number is performed according to the allocation priority input by the allocation priority input means (S6) in order units. If the value that can be allocated satisfies the required number, the allocation result is output as a fulfillment order, and if it is not satisfied, the allocation result is output.

The available start date calculation means (S3) uses the allocation result 3
Search for a bucket that is filled with the order materials that were out of stock in 2. The input information is the allocation result 32. The output information is load information. The search is started along the time axis from the bucket that is out of stock in the relevant order, and the bucket in which the difference between the available number and the total requirement of the bucket is larger than the requirement of the order is searched. The search result can be referred to in the order list (FIG. 3) of the load mountain moving means (S5).

Since the allocation means (S2) and the possible start date calculation means (S3) are executed every time the load mountain graph is modified by the load mountain moving means (S5), not only the reference function but also the simulation function is provided. become.

The load mountain moving means (S5) makes it possible to move the order in which the material is satisfied or the order in which the material is out of stock. When moving, clicking the layer color-coded in the load mountain graph 21 displays the order list shown in FIG. 3, where the order is selected and moved to the desired bucket. Further, by displaying the satisfied buckets calculated by the available start date calculating means (S3) on the order list, it is possible to realize a delivery date answer and a quick load transfer.

[0027]

As described above in detail, since the present invention includes the load expanding means, the allocating means, and the load mountain moving means in a series of processes, the load and the material sufficiency simulation are used to immediately produce the load. The feasibility of the plan can be evaluated, and the plan information can be repeatedly changed based on the evaluation. Therefore, it is possible to select plan information that is less likely to cause problems such as material shortages and production load overrun, and thus it is possible to prevent delay in delivery and increase in inventory assets.

Further, since it is not necessary to individually repeat the load plan and the material requirement plan, there is an effect that the number of steps for formulating the production plan can be reduced.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing one embodiment of the present invention.

FIG. 2 is an explanatory diagram showing an example of a load mountain graph.

FIG. 3 is an explanatory diagram showing an example of an order list selected in a load mountain graph.

[Explanation of symbols]

 S1 Load development means S2 Allocation means S3 Possible start date calculation means S4 Stacked graph display means S5 Load mountain moving means S6 Allocation priority input means 11 Plan information 12 Process procedure information 13 Calendar information 14 Capacity information 15 Inventory information 16 Not stocked information 17 Configuration information 21 Load mountain graph 22 Start date 31 Load information 32 Allocation result 33 Priority

Claims (5)

[Claims] 1. A load expanding means for expanding production load information based on plan information, process procedure information, calendar information, and capacity information, and inventory information of materials, unstocked information, configuration information, and the load information. An allocation means for calculating a production allowance result based on the allocation result, a startable date calculation means for calculating a production startable date according to the allocation result, and a load mountain graph showing the excess or deficiency status of materials according to the allocation result for each production unit And a load mountain moving means for adjusting the load by referring to the load mountain graph and reflecting the load information on the load mountain graph. 2. The production planning support system according to claim 1, wherein the allocation means calculates allocation results according to allocation priorities registered in advance. 3. Production load information can be calculated based on plan information, process procedure information, calendar information, and capacity information, and production can be performed based on material inventory information, unstocked information, configuration information, and the load information. A method for supporting production planning, characterized in that the load status of the production and the sufficiency status of the materials are displayed at the same time by a load mountain graph showing the excess or deficiency status of the materials for each production unit according to the allocation result. 4. The production planning support method according to claim 3, wherein the load is moved with reference to the load mountain graph, the load information is corrected, and the allocation result is corrected based on the load information. A production plan drafting support method characterized in that the number of producible items and the possible start date are calculated in synchronization with the movement of loads, and the production plan is adjusted while simultaneously referring to the production load condition and the material satisfaction condition. 5. The production planning support method according to claim 3 or 4, wherein the allocation result is calculated in accordance with pre-registered allocation priorities.