JP2973930B2 - Production planning simulation device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a production planning simulation apparatus, and more particularly to an MRP (Material R).
equipments Planning, MR
It is called P. The present invention relates to a production planning simulation apparatus for calculating the required quantity of each item and drafting an arrangement plan.

[0002]

2. Description of the Related Art A conventional production planning simulation apparatus performs a time-series calculation of the inventory of lower-level components developed from a production plan, and actually performs material ordering and manufacturing arrangement using the necessary information and arrangement information as it is. I do. For example, the inventory simulation system disclosed in Japanese Patent Application Laid-Open No. 04-364573 discloses a method in which the target item is of the order production system, and the past order and required order are changed while changing the conditions of the marginal inventory amount and the order inventory amount as settable parameters. , A time-series simulation of the inventory is performed, and the daily inventory change is displayed.

[0003]

Since the conventional production planning simulation apparatus as described above does not have means for evaluating the result of the MRP calculation, it can be directly connected to the ordering work and the calculation result is evaluated. There is no opportunity.

[0004] In addition, although inventory transitions can be simulated and displayed graphically to evaluate inventory transitions based on past production plans, the results of evaluations that take into account the effects of changes in production plans and process loads can be obtained. Inability to make plan changes based on In addition, when reviewing the standard information such as lot batch quantity, lot batch period, order quantity, and part switching, what kind of changes will affect the actual ordering situation, inventory changes, and process load? It is not possible to instantly evaluate various patterns on a graph.

[0005] Further, there is no environment in which information that is not directly related to the MRP calculation, such as cost information and design information, can be integratedly evaluated together with these simulation results.

SUMMARY OF THE INVENTION It is an object of the present invention to improve the above-mentioned drawbacks, and to evaluate a production plan while evaluating the production plan from a plurality of evaluation viewpoints such as availability of materials, load on a manufacturing process, and compliance with a delivery date when drafting the production plan. It is an object of the present invention to provide a production plan simulation apparatus which can adjust an arrangement plan and can evaluate the influence of a change in reference information or a change in a production plan together with various information.

[0007]

According to the present invention, there is provided a production planning simulation apparatus comprising: item information in which information of an item to be manufactured and procured is described; and configuration information in which a parent-child relationship of an item name is described. , Working day calendar information of the factory that produces the target item, inventory information that describes the stock quantity of each target item at a certain point in time, fixed finalization required information and fixed arrangement information, and planning Enter the required date and quantity of the target item and production plan information describing the quantity, calculate the required date and required amount of the component from the production plan information with reference to the item information and the configuration information, With the recording time of the stock information as a starting point, a new planning requirement and a new planning hand developed from the production planning information with reference to the fixed requirement information and the fixed order information from the stock amount in time series. MRP calculation means for making a new requirement / arrangement when the stock quantity meets the conditions defined in the item information, and changing the required date and quantity of the production plan information and adding / deleting a new production plan Production plan information registering means, and a relation between each required / arrangement based on the required / arranged information obtained as a result of calculation by the MRP calculating means based on the production plan information registered by the production plan information registered means. A shortage alarming means for extracting an item which cannot be arranged on the processing date from the required / arranged information obtained as a result of the calculation by the MRP calculating means and displaying an alarm, and an out-of-stock alarm means for displaying the required / arranged information. One by one
Gantt chart display means for displaying a graph as a bar, process load information for calculating process load information for each time bucket from the required / arranged information, manufacturing process procedure information for each item, and capacity information for each process. It comprises a calculating means and a process load pile graph displaying means for classifying the process load information under specified conditions and displaying the process load information in a bar graph for each time bucket.

Further, the production planning simulation apparatus of the present invention provides a graph for extracting required / arranged information of a Gantt chart displayed by the Gantt chart display means or a process load pile graph displayed by the process load pile graph display means. An information reverse linking means, and a production plan adjusting means for changing information such as required date and required number of required / arranged information extracted by the graph information reverse linking means.

Further, the production planning simulation apparatus according to the present invention further comprises a production lead time, a lot belonging to reference information including the item information, the configuration information, the working day calendar information, the stock information, and the confirmed required / arranged information. There is provided reference information changing means for changing any item such as a grouping quantity, a lot grouping period, and a component configuration validity period.

Further, the production planning simulation apparatus according to the present invention displays the allocation allocation information sent by the allocation allocation means separately for each time bucket as the allocation of the allocation and the required amount, and chronologically determines the allocation of the allocation from the on-hand inventory. And a stock transition graph display means for displaying the stock transition according to.

Further, the production planning simulation apparatus according to the present invention includes attribute information linking means for associating attribute information such as cost information and design information with the item information, the configuration information, and the required / arranged information by using an item as a key. And attribute information display means for displaying item information, configuration information, required / arranged information, and any attribute information associated with the attribute information link means.

Further, the production plan simulation apparatus of the present invention includes a plurality of plan management means for managing a plurality of types of plan requirement / arrangement information sent by the MRP calculation means.

Further, the production plan simulation apparatus according to the present invention provides a data access system for performing exclusive processing of data use among workers when a plurality of workers simultaneously adjust information managed by the plurality of plan management means. Including management means.

[0014]

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

FIG. 1 is a block diagram showing an embodiment of the present invention. In the figure, a production planning simulation apparatus according to the present invention includes: item information in which information on an item to be manufactured / procured is described; configuration information in which a parent-child relationship between items is described; And a reference information group a composed of inventory information describing the operation day calendar information of the factory that produces the product, inventory information describing the stock quantity of each target item at a certain point in time, already determined final requirement information and final order information. , The required date and quantity of the item to be drafted are described as input, and the required date and required value of the component are obtained from the previously described production plan information b using the above-described item information and configuration information. Calculate the quantity, and use the above-mentioned stock information as the starting point as a starting point, and chronologically determine the fixed order information and the fixed requirement information from the above-mentioned stock quantity, and the new plan requirements and new totals developed from the production plan. And adjusting the arrangements, inventory has a MRP calculation means 1 that sets a new required-arrange the meeting the conditions defined in the item information.

Further, there is provided a production plan information registering means 2 for changing the required date and quantity of the production plan information b and adding / deleting a new production plan.

Further, based on the production plan information b registered by the production plan information registering means 2, the required / arranged information c obtained by the calculation by the MRP calculating means 1 is used to calculate a required / arranged string. There is arrangement allocating means 3 for searching for an attachment relation and outputting and displaying arrangement allocation information g.

Further, from the required / arranged information c obtained as a result of the calculation by the above-mentioned MRP calculating means 1, a missing item alarm which extracts an item which cannot be arranged on the processing date, outputs missing item alarm information h, and displays an alarm is displayed. Means 4 is provided.

Further, there is provided a Gantt chart display means 5 for displaying each required / arranged information c of the above-mentioned calculation results as a bar as a graph and outputting the graph information as a Gantt chart as information i.

Further, a step of calculating process load information e for each time bucket from the requirement / arrangement information c of the above calculation result and a process information group d including manufacturing process procedure information of each item and capability information for each process. It has load information calculation means 6.

Further, there is provided a process load pile graph display means 7 for classifying the above-mentioned process load information e under designated conditions, classifying the process load information e by color, and displaying the time buckets in a bar graph (process load pile graph).

Further, the aforementioned Gantt chart display means 5
The position information corresponding to the position designated by a pointing device such as a mouse is acquired on the Gantt chart displayed by the above or on the process load pile graph displayed by the process load pile graph display means 7, and the position information corresponding to the position is acquired. It has a graph information reverse link means 8 for extracting required / arranged information and outputting it as reverse link information f.

Further, the above-mentioned graph information reverse link means 8
And a production plan adjusting means 9 for changing information such as required date and required number of required / arranged information included in the reverse link information f extracted by (1).

FIG. 2 is an explanatory diagram showing an example of a production plan information screen or a production plan adjustment screen in the above-mentioned production plan simulation apparatus. In the figure, in the case of the production plan information registration screen, the production plan information 6 is to be registered / changed, and in the case of the production plan adjustment screen, the plan requirement information included in the reverse link information f extracted by the graph information reverse link means.
Planned order information is subject to registration / change. In the figure, product name code F1, order number F2, required date F3, quantity F4
Can be entered in each of the fields, and the value entered on this screen is newly registered.

FIG. 3 is an explanatory diagram showing an example of the Gantt chart display screen. In the figure, bars B1 to B5 correspond to individual parts constituting one item, and the horizontal axis is a time axis. The length of each bar represents the corresponding manufacturing and procurement lead time. In addition, the auxiliary line HL
1, HL2 indicates the parent-child relationship between each item, and B1 is B
2, B3, and B2 is further composed of B4, B5. The operator selects the required planning / arrangement information corresponding to each bar by picking the bar portions B1 to B5 with a mouse or the like. FIG. 4 is an explanatory diagram showing an example of the above-mentioned process load pile graph. In the figure, L1 to L10 represent piled load layers classified according to classification conditions arbitrarily specified by an operator, the vertical axis represents the load amount, and the horizontal axis represents the time axis. The operator selects the required plan / arrangement information belonging to each layer by picking the layer portions L1 to L10 with a mouse or the like.

FIG. 5 is a flowchart showing the operation of the above-mentioned production planning simulation apparatus. In the figure, first, the production plan information b registered by the production plan information registration means 2 is registered.
Is changed or newly registered (S1). Then, MRP calculation is performed by the MRP calculation means 1 from the production plan information b and the reference information group a to calculate the plan required / arranged information c (S2). Further, arrangement and necessary association are performed by the arrangement allocation means 3 based on the plan required / arranged information c and the reference information group a of the calculation result (S3).

The out-of-stock alarm information is displayed by the out-of-stock alarm means 4 as appropriate by the operator using the results of the above processing (S4), and the Gantt chart is displayed by the Gantt chart display means 5 (S4). S5), process information d
Process load information calculating means 6 based on the plan required / arranged information c
To calculate the process load information e (S6), and display the process load pile graph by the process load pile graph display means 7 (S7).

An operator evaluates the presented information, returns to S1, re-registers the production plan information, re-simulates the production plan with a different production plan, makes a plan / adjustment of the production plan, and executes these Gantt chart diagrams. The required / arrangement to be adjusted on the process load pile graph is designated by a pointing device such as a mouse, and the information is extracted by the graph information reverse linking means 8 to extract the required / arrangement, and this is extracted by the production plan adjusting means 9. (S8), and returns to S3 again to simulate and make a plan adjustment in consideration of delivery date compliance, material procurement, and process load.

In the above-described production planning simulation apparatus, the production lead time, lot belonging to the reference information a including the item information, the configuration information, the working day calendar information, the stock information, and the confirmed required / arranged information are included. It is also possible to provide a reference information changing means for changing any item such as a grouping quantity, a lot grouping period, and a component configuration validity period.

Further, in the above-mentioned production planning simulation apparatus, the arrangement allocation information g sent by the arrangement allocation means is displayed separately for each time bucket in order of allocation and required amount. Inventory transition graph display means for displaying inventory transition by arrangement can also be provided.

Further, in the above-mentioned production planning simulation apparatus, the attribute information linking means for associating attribute information such as cost information and design information with the item information, configuration information, and the required / arranged information using the item as a key, Arbitrary attribute information associated with the attribute information linking means may be provided with attribute information displaying means for displaying item information, configuration information, and required / arranged information.

In the above-described production planning simulation apparatus, the schedule required by the MRP calculating means is transmitted.
By providing a plurality of plan management means for managing a plurality of types of arrangement information, a plurality of production projects can be handled. Furthermore, when a plurality of workers simultaneously adjust the information managed by the above-mentioned plurality of plan management means, a data access management means for performing an exclusive process of using data between workers is provided, thereby improving work efficiency. Can be improved.

[0033]

As described in detail above, the production plan simulation apparatus of the present invention extracts a plan that is not in time for arrangement from the MRP calculation results and displays an alarm or displays the MRP calculation results on a Gantt chart. , M
The RP calculation result is visually expressed as a process load stacking graph up to the process load, providing an evaluation environment for MRP calculation results, an interface for changing and registering production plans, and a Gantt chart and process load stacking used for evaluation. By providing an interface for adjusting the MRP calculation result on the graph, there is an effect that the simulation can be performed while taking into account delivery date, material procurement, and process load.

When revising the criteria such as lot lot quantity, lot lot term, order quantity, part switching, etc., what kind of change should be made to the actual arrangement situation, inventory transition, process load, etc. It is possible to evaluate whether there is an effect instantly while trying various patterns on the graph, and the effect that these simulation results and the information that is not directly related to the MRP calculation such as cost information and design information can be integrated and evaluated. is there.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing an example of a production plan information registration screen according to the present invention.

FIG. 3 is an explanatory diagram showing an example of a Gantt chart according to the present invention.

FIG. 4 is an explanatory diagram showing an example of a process load pile graph according to the present invention.

FIG. 5 is a flowchart showing the operation of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 MRP calculation means 2 Production plan information registration means 3 Arrangement allocation means 4 Shortage alarm means 5 Gantt chart display means 6 Process load information calculation means 7 Process load pile graph display means 8 Graph information reverse link means 9 Production plan adjustment means

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B23Q 41/08 G06F 17/60

Claims (7)

(57) [Claims] 1. Item information in which information of an item to be manufactured / procured is described, configuration information in which a parent-child relationship of an item name is described, and a working day calendar of a factory that manufactures the object item Information, inventory information that describes the stock quantity of each target item at a certain point in time, confirmed finalized information and confirmed arrangement information, and the required date and quantity of the item to be planned. Input the production plan information, calculate the required date and the required amount of the component parts from the production plan information by referring to the item information and the configuration information, and time-series the recording time of the stock information as a starting point. The new plan requirements and new plan orders developed from the production plan information are adjusted by referring to the fixed requirement information and the fixed order information from the stock amount, and the stock amount matches the condition defined in the item information. Then, make a new request / arrangement M
RP calculation means, production plan information registration means for changing the required date and quantity of production plan information, and adding / deleting a new production plan, and production plan information registered by the production plan information registration means. Arrangement allocating means for displaying a linking relationship between each required / arrangement from the required / arranged information obtained as a result of calculation by the MRP calculating means, and processing from the required / arranged information obtained as a result of calculation by the MRP calculating means. Out-of-stock alarm means for extracting alarms that cannot be arranged in the day and displaying an alarm, Gantt chart display means for displaying each of the required / arranged information as a bar, graph, required / arranged information, and each item Manufacturing process procedure information,
A process load information calculating means for calculating process load information for each time bucket from the capacity information for each process; and a process load pile graph displaying means for classifying the process load information under specified conditions and displaying the time load in a bar graph for each time bucket. A production planning simulation device characterized by including: 2. The production planning simulation apparatus according to claim 1, wherein the required / arranged information of the Gantt chart displayed by the Gantt chart display means or the process load pile graph displayed by the process load pile graph display means is extracted. Graph information reverse link means,
A production plan adjusting device for changing information such as a required date and a required number of required / arranged information extracted by the graph information reverse linking device. 3. The production planning simulation apparatus according to claim 1, wherein the item information, the configuration information, the working day calendar information, the stock information, and the reference information including the fixed requirement / arrangement information. A production planning simulation apparatus comprising: reference information changing means for changing any item such as a lead time, a lot batching quantity, a lot batching period, and a component configuration validity period. 4. The production planning simulation apparatus according to claim 1, wherein the arrangement allocation information sent by said arrangement allocation means is displayed separately for each time bucket in a manual distribution and a required amount, and the stock on hand. 1. A production planning simulation apparatus comprising: a stock transition graph displaying means for displaying a stock transition according to requirements / arrangements in chronological order. 5. The production calculation simulation apparatus according to claim 1, wherein attribute information such as cost information and design information and said item information, said configuration information, and said required / arranged information are included in said item. Attribute information linking means for associating the attribute information as a key, and any attribute information and item information, configuration information, required /
A production plan simulation device comprising: attribute information display means for displaying arrangement information. 6. The production plan simulation apparatus according to claim 1, further comprising a plurality of plan management means for managing a plurality of types of plan requirement / arrangement information sent by said MRP calculation means. A production planning simulation apparatus, characterized in that: 7. The production plan simulation apparatus according to claim 1, wherein a plurality of workers simultaneously adjust information managed by said plurality of plan management means. A production plan simulation apparatus including a data access management means for performing exclusive processing of data use between workers.