JPH06266725A - Production control method and system for machining material - Google Patents

Abstract

PURPOSE:To plan an effective production in accordance with the time limit of delivery of each product to be planned and the characteristic of each process in a production control system where a product serving as a machining material is manufactured in plural processes. CONSTITUTION:The product manufacturing processes are divided into an upper process group and a lower process group, and the unit products to be planned are divided into a group with which the limit time of delivery is fixed and a group with which the tentative time limit of delivery is decided in a cold rolling ten days planning system 610, etc. Then the products of both groups are arranged and tentatively arranged for each day so that the process conditions are satisfied in the order of time limit of delivery. Then the daily production plan is set for the upper and lower process groups. At the same time, the unit products are totalized for each set frame of the lower process group and each day. Then the lot type of the upper process group is set for each day based on the daily arrangement in a steel manufacture/hot rolling ten days planning system 620, etc. Then the daily production plan of the upper process group is set in a range of a prescribed period so that the number of daily set frames is satisfied based on the number of formed lots and in the order of tentative time limit of delivery of the lower process group.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention establishes a production plan for manufacturing a product as a processing raw material through a plurality of steps,
The present invention relates to a production management method and system for producing a product based on the production plan.

[0002]

2. Description of the Related Art In the steel industry, paper manufacturing industry, and textile industry, for example, in the steel industry, products used as processing materials such as steel component materials for automobiles and steel component materials for home appliances are shown in FIG. Processed through multiple steps such as blast furnace, converter, continuous casting, hot rolling, cold rolling and surface treatment (plating), for example, to manufacture raw material products in a coiled state. There is. Even in the paper manufacturing industry and the textile industry, although the processing contents are different, the product for raw material in a coiled state is manufactured through a plurality of processes.

Regarding the production of the above-mentioned raw material products, for example, in the case of the steel industry, when an order is collectively received from a customer or a trading company at the head office, a specific steel plant or a plurality of steel plants is ordered by an order unit. Details of each order, for example, contract month,
A series of manufacturing instructions will be given based on the trading company, quality, contracted quantity, size, etc., and the internal characteristics, processing steps, and processing methods of each order unit will be designed on an order-by-order basis at the steelworks that received the instruction. When the design of the above order is completed, the order is further subdivided, and the smaller ones are designed in a united product unit, and the product for material is manufactured based on this design. Further, in the production management business, a method of formulating a production plan is adopted in which a delivery date and a planned processing date for all processes are given to each product or a lot unit in which product units are bundled at the time of manufacturing.

[0004]

In the conventional method of formulating a production plan for a product unit or a lot unit in which product units are bundled, a production plan is formulated for each product unit or a lot unit in which product units are bundled. Scheduled processing dates for all processes can be given. However, it is necessary to secure the delivery time for each product, which should be managed individually, or to supply materials to each process, which should be managed globally, and allocate the necessary amount according to the characteristics of each process, for example, the lot. Is done for each product unit or lot unit that bundles product units.
In reality, if you make a mistake like the one described below, it will not be possible, and management will be complicated.

That is, the production of the raw material product is carried out from the raw material through a plurality of various processing steps. In the production planning of this product for raw materials, if the delivery time of each product unit is hindered for any reason, replace or stagger all product units or batch units of product units to guarantee the delivery time. Must. This replacement or staggered arrangement, that is, the production interruption leads to a change in the arrangement of the product for the material after the production interruption, which causes confusion in the delivery management of the product unit of another order, and again causes the production interruption of the product unit. As a result,
A so-called wobbled state occurs in which one manufacturing interrupt causes chaining of manufacturing interrupts one after another. Therefore, by only imposing a large work load on the manager of the manufacturing process, securing the delivery date that should be originally brought about by formulating the production plan, supplying materials in a well-balanced manner to each process, and arranging according to the characteristics of each process No improvement in production efficiency can be expected by determining

Further, in order to smoothly formulate the production plan of the replacement or staggered layout method, and to guarantee the delivery date, supply the appropriate material to each process, and perform the layout according to the characteristics of each process, it is unnecessary. It is indispensable to maintain a large product inventory and intermediate product inventory, and the content of the intermediate product inventory is also biased toward the same product type.

In addition, after the start of production of a unit product, when the delivery date of a product unit is changed due to a change in a usage plan in accordance with a change in market conditions of a customer, or a production delay of some unit products occurs due to production trouble, It is necessary to modify the production plan to reflect these circumstances, but in the conventional method of formulating a production plan, the planned processing dates for all processes are modified for each product or for each lot that bundles product units. Formulation of the production plan will start over. Moreover, such a modification is actually carried out by the labor-intensive work of a large number of skilled and dedicated progress managers.

The present invention is based on the above circumstances.
Formulate a production plan corresponding to the delivery date of the unit product to be planned and the characteristics of each process, realize the production management that produces the product based on the production plan, and systematize and automate the production management work. The purpose is to

[0009]

In order to solve the above-mentioned problems, the production management method of a processing material of the present invention is a production management when a product to be a processing material is manufactured through a plurality of steps. In the above, the product manufacturing process is divided into an upper process group and a lower process group, and the unit product to be planned is divided into a fixed delivery time unit product and a temporary delivery time setting unit product, and the production within the predetermined period of the lower process group is performed. First, the plans are arranged by day according to the delivery date of each fixed delivery unit product so as to satisfy the setting selection processing method and setting capability of each process, and then the setting selection processing method and setting capability of each process In order to satisfy the above conditions, the unit products are tentatively arranged by day according to the provisional delivery date, and a daily production plan within the prescribed period of the lower process group is formulated. Unit type, selected manufacturing process route, selection Leave aggregated by day set frame units for each processing method, the production plan for the predetermined period of the upper process group,
First, set the lot type, which is the production unit of the upper process group, on a daily basis, based on the daily arrangement of products with fixed delivery dates in the lower process group, and then, based on the amount necessary to form a lot. , Tentative delivery time setting unit of the lower process group In the tentative delivery date order of the products, and moreover, within the predetermined period of the upper process group by allocating within the predetermined period so as to satisfy the amount of the daily assembly frame unit of the lower process group, A daily production plan is prepared and production is performed based on the production plan.

Further, from the setting capacity of the intermediate product temporary storage space provided between the upper process group and the lower process group of the above-mentioned product manufacturing process, the forward advanceable amount of the daily assembly frame unit of the lower process group is obtained, Within the predetermined period of the upper process group, the daily production plan within the predetermined period of the lower process group is re-established, while the amount of the daily set frame units is moved forward and aggregated by the set frame unit by day. The daily production plan may be re-established.

Furthermore, when a delivery date change of the delivery date fixed unit product occurs during the production execution of the upper process group, the production plan of the lower process group at that time is changed to a unit product for each of the daily assembly frame units. It may be possible to replace and correct the order of delivery by the customer.

Further, the production management system for a processing material of the present invention is a production management system for manufacturing a product as a processing material through a plurality of steps, wherein the plurality of steps are an upper process group and a lower process group. And information regarding the above unit product including the division means for dividing the unit product subject to the production planning into the fixed delivery unit product and the provisional delivery set unit product, and the division information regarding the process and the delivery date obtained by the dividing unit. Based on the unit product information storage unit that stores the unit product information stored in the unit product information storage unit, based on the setting selection processing method and the setting capability of each process, the delivery date fixed unit product and Temporary delivery date setting unit products are arranged by date in the order of their delivery dates and temporarily arranged, and a lower process production plan formulation means for formulating a daily production plan within the predetermined period of the above lower process group, and Based on the daily allocation results of the unit products by the lower process production planning means, the amount of the above-mentioned arranged unit products is set for each product type of the lower process group, the selected manufacturing process route, and the collective frame unit for each selected processing method. A lot that sets the lot type, which is the production unit of the upper process group, on a daily basis, based on the aggregation means for totaling by day and the result of the daily arrangement of the delivery process fixed unit products of the lower process group by the lower process production plan formulation means. Based on the setting means, the amount necessary to form the lot and the amount of the daily assembly frame unit of the lower process group obtained by the totalizing means, the provisional delivery time setting unit product of the lower process group is Upper process production plan formulation means for allocating in the order of provisional delivery date and formulating daily production plan for the above upper process group within a predetermined period, and ability to set temporary storage space for intermediate products provided between the upper process group and lower process group From above process The amount of advance-possible amount determining means for obtaining the advance-possible amount of the daily set-frame unit and the amount of the daily assembly-frame unit of the lower process group within the range of the advance-possible amount obtained by the advance-possible-amount determining device are advanced. And a production plan re-establishing means for re-establishing a daily production plan of the lower process group and the upper process group within a predetermined period.

[0013]

As described above, according to the present invention, since the manufacturing process is divided into the upper process group and the lower process group to formulate the production plan, the restriction of the production equipment is relatively gentle. That is, based on the production plan of the lower process group that has been created with so-called freedom, a production plan for the upper process group is established that takes into consideration the constraint of the product lot consolidation and the strong constraint, for example, product type constraint such as steel type. it can. Also, from the aspect of delivery time constraints, by giving flexibility to the upper process group, which has weak constraints, and transfer flexibility in the lower process group, it is possible to formulate a production plan that allows strict delivery time management.

Further, in the production plan of the lower process group, the unit products whose delivery dates are fixed are arranged by day according to the delivery date order so as to satisfy the setting selection processing method and setting ability of each process, For unit products whose delivery date is not imminent and whose delivery date is not specified, make sure that the unit product with a provisional delivery date satisfies the setting selection processing method and setting ability of each process. In addition, since the temporary placement is made by day according to the order of the temporary delivery date, not only the delivery date can be secured, but also the materials according to the timing can be supplied to each process in a well-balanced manner, so that the efficient production can be achieved.

Further, the production unit for managing the production balance of the lower process group is defined as the product type, the selected manufacturing process route, and the set frame unit for each selected processing method, and the unit products are aggregated by the set frame unit by day. , If the delivery time of a fixed delivery time unit product is hindered, or if the setting selection processing method and setting ability of each process are not satisfied, or when the temporary delivery time setting unit product passes through the manufacturing process, after the production plan is established, Although the delivery date is fixed just before it is supplied to the lower process group, it is possible to replace the unit products within the same set frame within a predetermined period of time, so it is easy to secure the delivery date and manage the production balance. Yes, again
You can prepare for the delivery date setting to the maximum.

In addition, in the production plan of the upper process group, the lot type, which is the production unit of the upper process group, is set on a daily basis, based on the daily arrangement of the delivery date fixed unit products of the lower process group. Based on the amount required to form the product, the temporary delivery time is set in the order of the provisional delivery date of the unit product and within the predetermined period so as to satisfy the amount of the daily assembly frame unit of the lower process group. Since we will formulate daily production plans for process groups,
The delivery date of the unit product can be guaranteed and the production balance of the lower process group can be secured. You can aim for improvement.

Further, by manufacturing the unit product based on the production plan established as described above, it is not necessary to hold an extra product inventory or an intermediate product inventory, and an appropriate inventory amount can be obtained.

According to the second aspect of the invention, from the setting capacity of the intermediate product temporary storage space provided between the upper process group and the lower process group of the product manufacturing process, the production plan of the lower process group
Since the forward moving operation can be performed by obtaining the possible forward moving amount of the collective frame unit, the amount of the intermediate product stock in the collective frame unit can be suppressed. Also, in the production plan of the upper process group, in order to have the degree of freedom of arrangement up to the amount that can be moved forward, it is possible to control lot formation, which is the production unit of the upper process group, and lot allocation according to the setting capability of the upper process group. Therefore, the production efficiency of the upper process group can be improved.

According to the third aspect of the present invention, when a delivery date change of the delivery date fixed unit product occurs during the production execution of the upper process group, the production plan of the lower process group at that time is set to the date. Since the delivery time order of the customer of the unit product is changed and corrected for each separate set frame unit, it is possible to formulate a production plan aiming to supply materials in a well-balanced manner for each process, as well as for the unit product. It is possible to guarantee the delivery date by absorbing the delivery date change.

Further, in the production planning of the present invention, when there is any change request within the allowable period for the target product within the predetermined period, the production plan of the lower process group of the unit product is revised and formulated each time. It can be carried out easily.

[0021]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows the overall configuration of a production management system that manages the ordering and shipping of coiled products in the steel industry, and FIG. 2 shows the outline of the coiled product manufacturing process in a factory.

In FIG. 1, a plurality of orders placed by a consumer or a trading company are first accepted by the head office system 100 at once. And these orders are
With a series of manufacturing instructions such as trading company, quality, contract quantity, size, etc., the delivery date to be manufactured is given and assigned to multiple steelworks.

The assigned orders are received by the order processing system 200 of each steel mill, and the quality design system 3
After the quality design is performed according to 00, it is stored in the order management database (hereinafter abbreviated as DB) 541. continue,
Based on the information in the order management DB 541, the material design system 400 calculates the amount of material to be arranged and expands it into a manufacturing coil that is an actual unit product.
Stored in 552.

Next, the delivery date management system 500 carries out a progress grasping process with the manufacturing coils which are already arranged based on the information in the manufacturing coil management DB 552, and the result management D
The delivery date and the manufacturing instruction date are set based on the information in B511 and the customer information DB 521, and this is stored in the manufacturing coil management DB 552.

Then, the scheduling system 600
The manufacturing coil management D stored as described above by
Based on the information of B552, the manufacturing process as shown in FIG.
That is, the planned production amount and the production coil are developed in time series for each operation process such as blast furnace, converter, continuous casting, hot rolling, cold rolling, and plating, and the operation is performed via the production control system 700. A predetermined work instruction is given by the management system 800. The operation management system 800 executes control of various facilities and collection of information such as progress status in each manufacturing process for each operation process. The progress information in each manufacturing process collected here is the sequential manufacturing coil management DB.
Stored in 552. Further, the manufactured products are shipped to the customers by the shipping processing system 900.

The system configuration of the scheduling system 600 and the production management method thereof will be specifically described below with reference to the drawings. FIG. 3 is a block diagram showing elemental features of the scheduling system 600 shown in FIG.

The scheduling system 600 is, for example, a steelmaking / hot-season planning system 620 for scheduling the upper process group, which is the former, which divides the product manufacturing process into an upper process group and a lower process group according to the product manufacturing conditions.
And a steelmaking / hot rolling schedule planning system 630 which is an execution function of the schedule, a cold rolling schedule planning system 610 which schedules a lower process group corresponding to the latter, and a cold rolling schedule planning system 6 which is an execution function of the schedule.
And 40. Each of these units is configured by a computer system including, for example, a CPU, a RAM, a program ROM, and the like.

Further, the scheduling system 60 described above
No. 0 is provided with a schedule file daily planning file 613 and a lot organization / arrangement file 623 for storing information processed by the cold season planning system 610 and the steelmaking / hot season planning system 620. . Further, the information stored in the manufacturing coil management DB 552 is used for each processing performed in each of the systems 610, 620, 630, 640.

Next, FIG. 4 shows an example of the contents of information in the manufacturing coil management DB 552. As a typical item,
For example, manufacturing coil No., weight, delivery date confirmation degree, manufacturing method adopted, lot type, etc. may be mentioned. Regarding the manufacturing method adopted, the type (for example, the type of plating material such as zinc), the selected manufacturing process route (for example, coil manufacturing unit equipment, cold rolling, annealing,
Classification of the assembly frames such as A, B, ... Is set according to a combination of temper rolling, plating, etc.) and a selective processing method (eg, type of plating method such as electroplating or hot dipping). . Note that FIG. 4 shows a case in which the manufacturing coils are arranged in order of the delivery date and planning preparation is performed.

Next, each of the systems 610, 620, 63 that make up the scheduling system 600 shown in FIG.
The operations of 0 and 640 will be sequentially described with reference to FIGS.

The cold season planning system 610 includes a scheduling unit 611 for each manufacturing coil and a scheduling unit 612 for each assembly frame. Then, as shown in FIG. 5, the cold-season planning system 610 selects the plating type 1 and the plating type 2 which are the setting / selecting processing methods in accordance with the operation plan and the setting capacity of the plating process No. 3 as a pretreatment. The ability is developed daily. As a result, one plating process No. 3 is physically performed as a pre-processing for scheduling as logically two processes, that is, plating No. 3 plating process 1 process and plating No. 3 plating process 2 process. It should be noted that the time axis of this pre-processing can be set by time, for example, by 10 days, but in this example and the following examples, the setting capacity by day is used.

As shown in FIG. 6, the cold-season planning system 610 executes the process by the third plating process according to the plating type which is the setting / selecting processing method as a result of the pretreatment, for example, the daily setting capability. The manufacturing process is decided as the selective manufacturing process, and first of all the manufacturing coils to be processed by the plating type, the manufacturing coil whose delivery date is fixed is arranged according to the delivery date (the lower stage of FIG. 6). Next, for example, the setting period of the selective manufacturing process route (in this example, the cold rolling of the assembly frame A is 1 day between plating, and the cold rolling, annealing, tempering, and plating of the assembly frame B is 3 days). The manufacturing coils are arranged in the cold rolling process according to the reverse setting and the setting capability of the cold rolling process (upper part of FIG. 6). After that, the temporary delivery date setting manufacturing coils are also arranged in the order of the temporary delivery date in the same manner as the delivery date fixed manufacturing coils. As a result of these processes, the manufacturing coils as product units are arranged as shown in the upper part of FIG.

After the arrangement of the above-mentioned product units is completed, the cold season planning system 610, as shown in the upper part of FIG.
For example, the weights of the placement and manufacturing coils are totaled for each day by the set frame. At this time, if the production coil with the fixed delivery date cannot be secured or if the set capacity of each process is not satisfied, the placement of the production coil that has been placed between the same daily assembly frame units within the planning period is moved. The total amount can be adjusted by increasing or decreasing.

Next, as shown in the lower part of FIG. 7, depending on the set construction period of the upper process group of steelmaking / hot rolling and the lower process group of cold rolling,
The aggregate amount for each daily set frame shown in the upper part of FIG. 7 is shifted by 2 days before the set construction period. Also, in correspondence with the movement of the total amount of the daily collection frame unit, the manufacturing coil unit is similarly shifted by 2 days before the set construction period. Figure 8 shows the result.
This information is used in the steelmaking / hot-season planning system 620.
It is used for scheduling the upper process group according to.

Further, as shown in FIG. 9, by utilizing the ability to set a temporary storage space for intermediate products between the upper process group and the lower process group, the forward advanceable amount of the total amount of the daily collective frame unit is calculated for each day. . Note that the example of FIG. 9 shows a case where the advanceable amount utilizing the setting capacity of the temporary storage space for intermediate products is calculated as one day.

The steelmaking / hot-season planning system 620 is composed of a lot development unit 621 based on a steel type component system frame and a lot formation / arrangement unit 622 along the collective frame. Then, as shown in FIG. 10, the steelmaking / hot-season planning system 620 develops lots by day according to the arrangement date of the delivery date fixed manufacturing coils in the cold rolling process shown in FIG.
In addition, the production coil with provisional delivery date will be similarly developed. For example, when the amount required to form one lot is 100 t, in this example, four lots of the delivery date fixed manufacturing coils A1 and A2 are included in the lot type L1 on February 15, for example.
Since there is only 0t, it is necessary to collect 60t of product in order to form a lot. Therefore, in order to maximize the amount of the daily assembly frame unit of the lower process group, the provisional delivery date setting manufacturing coils A4 and B on February 16th are set.
3 and B4 are advanced to make one lot. In addition, similar processing is executed for manufacturing coils of other dates and other lot types.

FIG. 11 shows the processing result of the lot formation. For example, assuming that the daily setting capacity of steelmaking / hot rolling is 100 t, as shown in FIG. 11, this setting capacity value is exceeded on February 18, so the possible forward movement amount for each grouping frame is Within the range of (1), the lots that have been formed are moved forward. In this example, the lots, ... Are moved forward by one day to complete the schedule as shown in FIG.

The steelmaking / hot rolling schedule planning system 630 is a production instructing unit 6 for each manufacturing coil according to lot formation / arrangement.
31, the production order is issued according to the schedule made by the steelmaking / hot-season planning system 620,
Production is performed in units of manufacturing coils in accordance with the lot organization and arrangement as shown in FIG.

In the cold rolling schedule planning system 640, the scheduling result of the steelmaking / hot rolling schedule planning system 620 and, for example, the elapsed time of the production period of steelmaking / hot rolling are controlled by the production instructing unit 641 for each manufacturing coil along the collecting frame. Production fluctuations of the upper process group and production fluctuations of the lower process group caused by
In response to the result of the delivery date change of the product unit due to the change of the usage plan according to the change in the market condition of the customer, the amount for each daily collection frame is adjusted, and the manufacturing coils are arranged so as to satisfy the amount.
In this example, as shown in FIG. 13, the delivery date of the product unit is changed due to the change of the usage plan according to the market condition change of the customer, and the delivery date of the manufacturing coil A7 is from February 23 to February 25.
The case where the delivery date of the manufacturing coil A9 is advanced to February 22 from February 23 will be described.

In this case, as shown in FIG. 14, the production instructing unit 641 for each manufacturing coil along the set frame shows that the schedule result of the cold season planning system 610 shows that the amount by the set frame by day is February. Since the assembly frame A on the 18th is 60t, the production coils A5, A6, A9, which are the delivery order at that time, are scheduled and produced according to the amount, and the assembly frame A on February 19 is 60t. Therefore, the production coils A7, A, which are in the order of the delivery date at that time, according to the quantity
3, A8 is scheduled for production. In this example, the delivery date of two unit products has been changed, and the arrangement of these units has been changed. However, the delivery date of one manufacturing coil or three or more manufacturing coils has been changed. Also in the case, scheduling that can be similarly reflected in production can be performed.

[0041]

As described above, according to the present invention, in production control when manufacturing a product as a processing material through a plurality of processes, the delivery date of a unit product to be a production plan and the characteristics of each process Since the scheduling corresponding to and was performed, and the production was performed based on the schedule,
It is possible to keep the delivery date and perform efficient production according to the timing for each process. Further, in the scheduling, since the production management is controlled by the collective frame in which the unit products are aggregated, it is possible to prevent the excessive stock holding caused by the imbalance of the kind of the intermediate stock, etc. Can be done.

[Brief description of drawings]

FIG. 1 is a block diagram showing the overall configuration of a steel product production management system.

FIG. 2 is a diagram showing an outline of a manufacturing process of a steel product in a factory.

FIG. 3 is a block diagram showing elemental features of the production management system of the present invention.

FIG. 4 is a diagram showing an example of lower process data stored in a manufacturing coil management DB.

FIG. 5 is a diagram showing an example of pretreatment in a cold season plan.

FIG. 6 is a diagram showing an example of coil arrangement in a cold season plan.

FIG. 7 is a diagram showing an example of aggregation by set frame in the cold season plan.

FIG. 8 is a diagram showing an example of upper process data as a result of the cold season plan stored in a manufacturing coil management DB.

FIG. 9 is a diagram showing an example of determination of a possible amount of advance in the cold season plan.

FIG. 10 is a diagram showing an example of lot formation in the steelmaking / hot rolling schedule plan.

FIG. 11 is a diagram showing an example of advancement in the steelmaking / hot rolling schedule plan.

FIG. 12 is a diagram showing an example of upper process data stored in a manufacturing coil management DB as a result of the steelmaking / hot-seasoning plan.

FIG. 13 is a diagram showing an example of lower process data when a delivery date is changed.

FIG. 14 is a diagram showing an example of cold rolling schedule plan variation correction according to the change of the delivery date.

[Explanation of symbols]

552 Production coil management DB 600 Scheduling system 610 Cold rolling schedule planning system 611 Scheduling unit for each manufacturing coil 612 Scheduling unit for each set frame 613 Set schedule daily planning file 620 Steelmaking / hot rolling planning system 621 Lot by steel type component system frame Development section 622 Lot organization / arrangement section along the assembly frame 623 Lot organization / arrangement file 630 Steelmaking / hot rolling schedule planning system 631 Production instructor for each manufacturing coil unit according to lot organization / arrangement 640 Cold rolling schedule planning system 641 assembly Production instruction unit for each manufacturing coil along the frame

Continuation of the front page (72) Inventor Nobuyuki Fujimoto 5-3 Tokai-cho, Tokai City Nippon Steel Corporation Nagoya Steel Works

Claims (4)

[Claims] 1. In production control when a product to be a processing material is manufactured through a plurality of processes, the product manufacturing process is divided into an upper process group and a lower process group, and a unit product to be a production plan is classified. Divide the delivery date fixed unit product and the provisional delivery date setting unit product into the production plan within the predetermined period of the above lower process group,
First of all, according to the delivery date of each delivery fixed unit product, it is arranged by day so as to satisfy the setting selection processing method and setting ability of each process, and then the setting selection processing method and setting ability of each process are satisfied. Temporary delivery time setting unit products are provisionally arranged by day along the temporary delivery date to formulate a daily production plan within the predetermined period of the lower process group, and the unit product is the production unit of the lower process group. The production schedule for each product type, selected manufacturing process route, and selected processing method is aggregated on a daily basis. Lot type, which is the production unit of the upper process group, is set on a daily basis based on the arrangement, and then the temporary delivery date of the lower process group is set based on the quantity required to form the lot. Sequentially, and satisfy the amount of daily assembly frame units of the lower process group A method of production control material for processing, characterized in that developed a daily production plan within a predetermined time period above process group are allocated within a given time period, to produce on the basis of the production plan as. 2. From the setting ability of the intermediate product temporary storage space provided between the upper process group and the lower process group of the product manufacturing process,
Calculate the possible amount of advance of the above-mentioned lower process group by daily assembly frame unit,
The amount of the daily assembly frame unit is moved forward and the daily aggregate is calculated for each assembly frame unit, and the daily production plan within the predetermined period of the lower process group is re-established, and then the predetermined period of the upper process group is prepared. The production management method for a processing material according to claim 1, wherein the production plan for each day is re-established. 3. When a delivery date change of the delivery date fixed unit product occurs during the production execution of the upper process group, the production plan of the lower process group at that time is changed to a unit product for each of the daily assembly frame units. The production management method of a processing material according to claim 1 or 2, wherein the delivery date is ordered by the customer and the correction is performed. 4. A production management system for manufacturing a product as a material for processing through a plurality of processes, wherein the plurality of processes are divided into an upper process group and a lower process group, and a unit product which is a production planning target. Means for dividing the delivery date fixed unit product and the provisional delivery date setting unit product, unit product information storage means for storing information on the unit product including division information on the process and delivery date obtained by the sorting means, and the unit Based on the unit product information stored in the product information storage means, based on the setting selection processing method and setting capability of each process, the delivery fixed unit product and the provisional delivery set unit product are sorted by date in order of delivery date. The lower process production plan formulation means for arranging and provisionally arranging the daily production plan within the predetermined period of the lower process group, and the unit product day by the lower process production plan formulation means Based on the placement result, the production unit of the lower process group, the type, the selected manufacturing process route, the aggregation means for totaling the amount of the arranged unit products for each set frame unit for each selected processing method, and the lower process production Necessary for forming the above-mentioned lot, and lot setting means for setting the lot type, which is the production unit of the above process group, on a daily basis based on the result of the daily arrangement of the fixed delivery unit products of the lower process group by the planning means. Based on the quantity and the quantity of the lower process group in the daily assembly frame unit calculated by the aggregating means, the temporary delivery time setting unit products of the lower process group are allocated in the order of the temporary delivery date and the predetermined period of the upper process group is assigned. From the upper process production plan formulation means for formulating the daily production plan in the above, and the ability to set the intermediate product temporary storage space provided between the upper process group and the lower process group, Before determining the amount that can be moved forward Predetermination of the lower process group and the upper process group by advancing the amount of the daily assembly frame unit of the lower process group within the range of the possible forward motion amount determined by the possible forward motion amount determination means and the forward motion possible amount determination means. A production management system for a processing material, comprising: a production plan re-establishment means for re-establishing a daily production plan within a period.