JPH07105283A - System and device for preparing production schedule - Google Patents

Abstract

PURPOSE:To easily determine or vary the production quantities of partially fabricated items and finished products without any mistake when plural kinds of finished product are produced from one kind of partially fabricated item in production planning operation. CONSTITUTION:The device has a parent-child information storage part 3 which stores the relation of the finished products and partially fabricated items of all products, a product information storage part 4 which stores the individual read times of the finished product and partially fabricated items, a plan storage part 5 which stores a plan quantity that is already determined, a plan registration part 1 for correcting and newly inputting the plan quantity, a plan collation part 2 which calculates a necessary production quantity or excessive or deficient quantity from the parent-child relation of the products and the manufacture lead times, and a plan evaluation part 6 which displays effective excess/ deficiency information for eliminating the excess or deficiency and sends plan adjustment promotion information to a plan registration part 1 again.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a production schedule creating device, and in particular, when a new production plan of a product whose parent-child relationship of products is not uniquely determined or corrected, an excess or deficiency is automatically calculated from the relationship of each product. The present invention relates to a production schedule creation device that promotes adjustment.

[0002]

2. Description of the Related Art A conventional production schedule creating apparatus is disclosed in Japanese Patent Application Laid-Open No. 63-306861 and Japanese Patent Application Laid-Open No. 1-32113.
As described in Japanese Patent Laid-Open Publication No. 2 (1994), the production number of each production is automatically calculated from the parent-child relationship information and presented for the product whose parent-child relationship is uniquely determined.

[0003]

In the above-mentioned conventional production schedule creation apparatus, the parent-child relationship of products must be uniquely determined, and the semi-finished products are made common, and one semi-finished product to a plurality of final products. It was difficult to plan and modify the production quantity of semi-finished products for products that produce. Also, when the production quantity of semi-finished products is changed, the number of semi-finished products that can be produced is not known, and when the planning and revision are made, there is a discrepancy between the production quantities of semi-finished products and final products.
It had the drawback of having an extra inventory.

[0004]

A production schedule creating apparatus of the present invention stores parent-child information storage for storing the relationship between all final products and semi-finished products, including products that can produce a plurality of final products from one semi-finished product. Part, a product information storage unit that stores individual manufacturing lead times for final products and semi-finished products stored in the parent-child information storage unit, and a planned quantity of each final product and a planned quantity of semi-finished products that have already been determined. A plan storage unit for storing the plan quantity, a plan registration section for correcting and newly inputting the planned quantity of each final product and semi-finished product, and a parent-child information storage section and a product information storage section for the plan corrected and newly input by the plan registration section. For products that can calculate the required production quantity between the parent and child based on the parent-child relationship of the product and the manufacturing lead time stored in, the required production quantity is calculated, and the production quantity is calculated because the parent-child relationship cannot be uniquely determined. For the items that cannot be checked, the plan collation unit that calculates the number of excess and deficiency, and the excess and deficiency information that is effective to reduce the excess and deficiency to 0 for the products that have excess and deficiency as a result of comparison by the plan collation unit And a plan evaluation unit that transmits the plan adjustment promotion information to the plan registration unit again.

[0005]

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 1 is a functional block diagram showing an embodiment of the production schedule creating apparatus of the present invention.

The production schedule creating apparatus of this embodiment is
As shown in FIG. 1, based on the plan information newly registered or corrected by the plan registration unit 1, the plan collation unit 2 searches the parent-child information storage unit 3 for a semi-finished product or a final product having a parent-child relationship to be planned. Then, the manufacturing lead time of the searched product is searched from the product information storage unit 4, and the difference from the previous plan stored in the plan storage unit 5 is calculated based on these search results to calculate the current product's The excess or deficiency is calculated, the excess or deficiency information is presented by the plan evaluation unit 6 as the evaluation information as shown in FIGS. 2A and 2B, and the plan registration unit 1 is notified again of the product with the excess or deficiency. It includes functions and.

2A and 2B are diagrams showing the evaluation information presented by the plan evaluation unit 6.

FIG. 2 (a) is a graph showing the number of stocks of the semi-finished product name "i". When the production of x semi-finished products per day is completed, the total production quantity of the final products [A] [B] [H] [Z] per day is (x-8), and the semi-finished product [i] 1
It shows that we have 8 pieces in a day. If the number is less than the dotted line of stock 0, it means that the semi-finished product [i] is insufficient and the production quantity of one of the final products [A] [B] [H] [Z] cannot be realized. It is a thing.

FIG. 2B shows numerical values of the quantity shown in FIG. A positive value indicates a stock of semi-finished products due to overproduction of semi-finished products, and a negative value indicates a decrease in the production quantity of final products due to a shortage of semi-finished products.

Next, the operation of the system will be described.

FIG. 3 is a flow chart showing an example of the operation of the plan collating unit 2. First, the plan registration unit 1 searches the parent-child information storage unit 3 for a product name for which a plan is newly registered or modified, and acquires parent-child relationship information (step 1). Further, the manufacturing lead times of all the parent-child products acquired in step 1 are retrieved from the product information storage unit 4 (step 2). Next, it is judged whether the newly registered or modified product is a final product or a semi-finished product based on the information obtained in step 1 (step 3). If the corresponding product is a semi-finished product in step 3, it is further determined from the information obtained in step 1 whether there are a plurality of related final products (step 4). When the corresponding product is a semi-finished product in step 3 and there are a plurality of final products in step 4, the completion date is calculated from the manufacturing lead time of the corresponding product, and the production quantity of the related final product produced on the completion date. Is calculated (step 5). Next, as the calculation of the excess / deficiency number, the difference between the sum of the production quantities calculated in step 5 and the previous plan stored in the plan storage unit 5 is calculated to calculate the excess / deficiency of the current product, and the production of the corresponding product is calculated. A difference in quantity is obtained (step 6). If the applicable product is the final product in step 3 or if there is only one final product of the applicable product in step 4, if the applicable product is a semi-finished product, the completion date is set, and the applicable product is the final product. If it is a product, the start date of the related semi-finished product is calculated, and the required production quantity is calculated so that the production quantity of the related product on the calculated date matches the production quantity of the relevant product (step 7). Finally, the product name and the excess / deficiency number calculated in step 6 or the required production number calculated in step 7 are transmitted to the plan evaluation unit 6 (step 8).

[0013]

As described above, the production schedule creating apparatus of the present invention is a semi-finished product in which the parent-child relationship of products is not uniquely determined so that plural kinds of final products can be produced from one semi-finished product. It is possible to easily make a plan or a plan correction from which of the final products without causing the production quantity inconsistency.

[Brief description of drawings]

FIG. 1 is a functional configuration diagram showing an embodiment of a production schedule creation device of the present invention.

FIG. 2 is a diagram showing evaluation information presented by a plan evaluation unit in the production schedule creation device of this embodiment.

FIG. 3 is a flowchart showing an example of the operation of the plan collating unit in the production schedule creating device of this embodiment.

[Explanation of symbols]

 1 plan registration unit 2 plan collation unit 3 parent-child information storage unit 4 product information storage unit 5 plan storage unit 6 plan evaluation unit

Claims (3)

[Claims] 1. A parent-child relationship between all finished products and semi-finished products, including products capable of manufacturing a plurality of finished products from one semi-finished product, and individual manufacturing lead times for the finished products and semi-finished products in the parent-child relationship. And memorize the planned quantity of each of the final products and the planned quantity of the semi-finished products which have already been determined, correct and newly input the planned quantity of each of the final product and the semi-finished product, and The required production quantity can be calculated from those that can calculate the required production quantity between the parent and child based on the parent-child relationship and the manufacturing lead time, and the production quantity that cannot be calculated because the parent-child relationship cannot be uniquely determined. Calculate the number of deficiencies, provide the excess / deficiency information that is effective to eliminate the excess / deficiency for the products with excess / deficiency, and re-enter the planned quantities of each of the final products and semi-finished products. To Production scheduling system to butterflies. 2. A parent-child information storage unit that stores the relationship between all final products and semi-finished products, including products that can produce a plurality of final products from one semi-finished product, and a final product stored in the parent-child information storage unit. A product information storage unit that stores individual manufacturing lead times for products and semi-finished products, a plan storage unit that stores the planned quantity of each final product and the planned quantity of semi-finished products that have already been determined, and each final product and semi-finished product The plan registration unit for correcting and newly inputting the planned quantity of the product, and the parent-child relationship of the product and the manufacturing lead stored in the parent-child information storage unit and the product information storage unit for the plan corrected and newly input by the plan registration unit. For those that can calculate the required number of production between parent and child from the time, the required number of production, for those for which the parent-child relationship cannot be uniquely determined and the number of production cannot be calculated, the number of excess and deficiency. As a result of the collation by the plan collating unit to be output by the plan collating unit, for the product in which the excess or deficiency has occurred, effective excess or deficiency information for eliminating the excess or deficiency is presented, and the plan registration unit again plans. A production schedule creation device, comprising: a plan evaluation unit that transmits adjustment promotion information. 3. The plan registration unit searches the parent-child information storage unit for a product name for which a plan has been newly registered or modified, acquires parent-child relationship information, and acquires all the products of the parent-child relationship information acquired from the product information storage unit, respectively. The manufacturing lead time is searched, and it is determined from the acquired parent-child relationship information whether the newly registered or modified product is a final product or a semi-finished product. If the corresponding product is a semi-finished product, it is further determined whether a plurality of final products exist. If the relevant product is a semi-finished product and there are multiple final products, calculate the completion date from the manufacturing lead time of the relevant product, calculate the sum of the production quantities of the related final products produced on the completion date, and then calculate Calculate the excess and deficiency from the difference between the sum of the production quantities and the production quantity of the product. If the applicable product is a final product, or if there is only one final product of the applicable product, then the completion date if the applicable product is a semi-finished product from the manufacturing lead time of the applicable product, and the related semi-finished product if the applicable product is a final product. The start date is calculated, and the necessary production quantity is calculated so that the production quantity of the related product on the calculated day matches the production quantity of the relevant product, and the product name and the calculated excess or deficiency number or the calculated The production schedule creating apparatus according to claim 2, wherein the required production quantity is transmitted to the plan evaluation section.