JP4243421B2 - Steel product manufacturing management method, manufacturing scheduling apparatus and storage medium - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to steel products.Manufacturing management method,ManufacturingMore particularly, the present invention relates to a method and apparatus for efficiently scheduling steel products.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in a steelworks that manufactures various steel products, a production plan for each predetermined period is made according to information on the steel products to be ordered. And in order to absorb the difference between the said manufacturing plan and operation fluctuation | variation, the operation | work actually performed on the work day according to the said work plan according to the condition of work was corrected, and it manufactured according to it.
[0003]
  By the way, when drafting a production plan for a steel product, as shown in FIG. 16, the production plan for the steel product has been drafted and started on the basis of the date the order is placed. That is, orders are sequentially placed along the time axis, such as “first order A”, “second order B”, “third order A ′”, “fourth order B ′”. Then, "steel making process", "Hot rolling process (hereinafter “Hot rolling process "Or “HOT”. )In each of the manufacturing processes "" and "the lower process", manufacturing has started on an order-input basis.
[0004]
In order to execute the processing of each process according to the schedule in each manufacturing process planned as described above, conventionally, as shown in FIG. The production method was oriented. The lot-max-oriented production method means that a predetermined amount or more of processed products are stocked for each manufacturing process, and a predetermined amount of processed products are always supplied to the manufacturing process. This is a method to increase efficiency.
[0005]
In addition, in the past, by securing product inventory for a certain period (for example, about one month), the shipping date and delivery date of steel products are guaranteed, so that the above-mentioned “stock guarantee” by the prefabrication is aimed at. It was trying to meet the shipping deadline of the ordered steel products.
[0006]
[Problems to be solved by the invention]
However, in recent years, there has been a strong demand for shortening the manufacturing period of steel products and reducing costs (improving cash flow) by reducing inventory. For this reason, it is required to reduce the amount of products to be stocked in each manufacturing process as much as possible.
[0007]
In addition, it has been demanded to increase the operation rate in each process while reducing the inventory amount in each manufacturing process as much as possible, and to further aggregate the production lots in accordance with the shipping plan.
[0008]
Furthermore, in recent years, there has been a demand for improvement of customer service by reducing the construction period and short delivery, that is, strengthening non-price competitiveness.
In view of the above-mentioned problems, the first object of the present invention is to guarantee the shipping date and delivery date of a steel product without securing a large amount of product inventory.
In addition to the first object, the second object is to reduce the amount of the semi-finished product inventory in each manufacturing process as much as possible so as to guarantee the shipping date and delivery date of the steel product.
[0009]
[Means for Solving the Problems]
  The steel product manufacturing management method of the present invention is a computerized steel product manufacturing management method, wherein the shipping planning unit extracts order information to be manufactured within a predetermined number of days from the input order information, and The order information extracted in the extraction step is aggregated by freight port or riverbank, and lots are organized, and among the organized lots, correction is made to aggregate at the freight port or riverbank that can be stacked at the freight port or riverbank. The shipping plan creation step in which the shipping plan department creates a shipping plan in which the planned shipping lot is determined and the planned shipping date is set, and the shipping date of the shipping plan created in the shipping plan creation stepAs a starting point,Going back from the lower process when manufacturing steel products, set the date to start manufacturing for each order information.A first plan creation step for creating a first plan by the first planner, and a second plan for performing manufacturing on a daily basis based on the first plan created in the first plan creation step. Based on the second plan creation step in which the second planning unit creates the plan and the second plan created in the second plan creation step, the work order creation unit generates work order information in units of time. And a work instruction information creation step for creating.
  Another feature of the present invention is that in the first plan creation step,The day to start manufacturingAs when manufacturing steel productsHeat ofFind the day to perform the hot rolling process,The date for performing the above hot rolling process was set for each order information.The first plan is created.
  Another feature of the present invention is that, in the first plan creation step, when the first plan is created by tracing back the schedule from the lower process, a plurality of lots are collectively manufactured together. The first plan is created by aggregating so as to be processed in step (1).
[0010]
  The production scheduling apparatus of the present invention is a production scheduling apparatus for steel products, and extracts order information to be produced within a predetermined number of days from input order information, and collects lots by collecting by freight port or riverbank. Create a shipping plan in which the planned shipping lot is determined and the scheduled date of loading is set by correcting the totalization at the landing port or river bank that can be stacked at the above-mentioned shipping port or river bank. The shipping plan creation means to be used and the scheduled shipping date of the shipping plan created by the above shipping plan creation meansAs a starting point,Going back from the lower process when manufacturing steel products, set the date to start manufacturing for each order information.Based on the first plan creating means for creating the first plan and the first plan created by the first plan creating means, a second plan for creating the daily production And a work instruction information creating means for creating work instruction information in units of time based on the second plan created by the second plan creating means.
  Another feature of the present invention is that the first plan creation means isThe day to start manufacturingAs when manufacturing steel productsHeat ofFind the day to perform the hot rolling process,The date for performing the above hot rolling process was set for each order information.The first plan is created.
  According to another feature of the present invention, the first plan creation means collects a plurality of lots together when creating the first plan by tracing back the schedule from a lower process. The first plan is created by aggregating so as to be processed in step (1).
[0011]
  The storage medium of the present invention is the aboveEitherDescribed inOf manufacturing management method of steel productsEach stepFor running on a computerProgramMemoryIt is characterized by that.
  Further, another feature of the present invention is that each of the above-described meansAs a computer to functionProgramMemoryIt is characterized by that.
[0012]
[Action]
Since the present invention has the above-mentioned technical means, it is possible to improve the predictability that enables the ordered product to be manufactured by the date of shipment.
In addition, according to another feature of the present invention, it is possible to guarantee the shipping date and delivery date of a steel product while reducing the amount of semi-finished product inventory and product inventory in each manufacturing process as much as possible. Is possible.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
  First, an outline of information processing in an embodiment of the present invention will be described. Conventionally, in the present invention, a “shipment plan” is first created and then a “shipment plan” created according to the present invention, in contrast to a method in which a production plan for steel products has been drafted and started based on the date on which an order is placed. A weekly schedule (unit of a certain number of days) is formulated based on the plan. Next, within this weekly schedule range, the daily schedule and work instructions for each process are sequentially fine-tuned so that the delivery date can be reliably handled (weekly → daily → hourly).
[0014]
  Hereinafter, embodiments of an integrated manufacturing management method, a scheduling apparatus, and a storage medium for steel products according to the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing an example of a mechanism for producing a steel product of the present invention. As shown in FIG. 1, the order information input from the head office 101 is input to the order processing unit 102 of the scheduling apparatus and processed for ordering, and also input to the order input information DB (database) 105. Here, the order information is information indicating the contents of the order from the customer, and the order input information is information to which a timing to record production is given.Then, quality design is performed by the quality design unit 103, and the design result is input to the order DB 104. The information in the order DB 104 and the order entry information DB 105 isFor creating weekly schedulesInput to the weekly planner 106.
[0015]
  107 is an order progress management DB, 108 is a schedule management DB, 109 is an in-process material management DB, and the weekly schedule created by the weekly planner 106 isIn schedule management DB108Stored.
[0016]
110 is a daily planning means, 111 is an operation instruction means, 112 is an operation result management means, and 113 is a shipping means. The processing performed by each of these means 110, 111, and 113 will be described in detail later.
[0017]
  FIG. 2 shows a detailed configuration of a main part surrounded by a dotted line in FIG. In FIG. 2, 201 is an order DB, 202 is an order entry information DB, and 203 is a delivery date for storing delivery date information.Information DBIt is. The delivery date information is information indicating how many days a ship carrying steel materials and products arrives, and is obtained from trading companies, customers, and the like.
[0018]
In addition, 204 is a shipping planning unit, 205 is an order progress management DB, 206 is a schedule management DB, 207 is an arrangement detail management unit, 208 is a weekly production planning unit, 209 is a weekly daily schedule management unit, and 210 is an in-process material management DB. , 211 is a daily execution scheduling unit (shipping execution planning unit), and 212 is a process command organizing unit (shipment command).
[0019]
  Next, the processing procedure performed by each means will be described with reference to the flowcharts of FIGS. FIG. 3 is a flowchart for explaining the processing procedure of “shipment plan” performed by the shipment planning unit 204. As shown in FIG. 3, when the process is started, in the first step S31orderInformationThe order DB 201, the order input information in the order input information DB 202, and the delivery date information in the delivery date information DB 203, respectively.be registered.
[0020]
  Next, in step S32, a target order to be manufactured in the week to be planned is extracted from the order information input in step S31. After that, the above-mentioned extracted order for the plan isAnother,River bankSeparatelyCollecting (step S33), and assigning a lot number (hereinafter, scheduled shipping lot number) for each ship allocation scheduled by performing lot organization based on the aggregation result (step S34).
[0021]
Next, in step S35, when the lot organization is reviewed and correction is necessary, the process proceeds to step S36, and based on the planned dispatch lot number, the freight ports that can be stacked, the aggregation of river banks, The planned dispatch lot is corrected based on the assortment information, and then the process proceeds to step S37 to determine the lot organization. On the other hand, if it is not necessary to correct the lot organization as a result of the review of the lot organization in step S35, the process proceeds directly to step S37 to confirm the lot organization.
[0022]
  Next, in step S38, the berth is based on the planned dispatch lot number.ofArrangement is performed, and the result is verified in step S39. As a result of this verification,ofIf there is any inconvenience in placement, berth at step S300ofThe arrangement is corrected, and then the shipping plan is confirmed in step S301. If there is no problem as a result of the verification in step S39, the process directly proceeds to step S301 to confirm the shipping plan.
[0023]
  Next, a procedure for creating “arrangement details management” performed by the arrangement details management unit 207 will be described with reference to the flowchart of FIG. First, in the first step S41, the shipping plansoShippingofThe order details for which the scheduled date is set are grasped.
[0024]
  Next, in step S42, shippingofBased on the standard construction period and chance table starting from the scheduled date,Day requiring hot rolling work (hereinafter referred to asHOT request date)To figure out. After that, proceed to step S43, from the HOT request dateWeeks requiring hot rolling operations (hereinafter referred to asHOT request roll week)Order informationeverySet to. The “arrangement detail management” created in this way is stored in the order progress management DB 205. In this specification, HOT means heat.Intermediate pressureThe drawing process is shown.
[0025]
  Next, a procedure for creating a “weekly production plan” performed by the weekly production planning unit 208 will be described with reference to the flowchart of FIG. First, in the first step S51, based on the HOT request roll week,ofKnow the details to be arranged. Next, the process proceeds to step S52, where each process is performed based on the work-in-progress material and the current week target details.Load adjustmentTo implement.
[0026]
Next, in step S53, the manufacturing start details for the current week are primarily determined. Next, in step S54, it is determined whether the arrangement details can be evaluated. This determination is made for delivery date, production, and inventory.
[0027]
  Next, in step S55, the manufacturing start details for the current week are adjusted. After the adjustment, the manufacturing start details for the current week are confirmed (step S56). Next, the process proceeds to step S57, and this week's manufacturing start specification is entered.Week to perform hot rolling (hereinafter referred to asHOT execution roll week)Set.
[0028]
Next, a weekly daily schedule creation procedure performed by the weekly daily schedule management unit 209 will be described with reference to the flowchart of FIG.
First, in the first step S61, the details to which the corresponding HOT execution roll week is given are grasped. Next, proceeding to step S62, the primary schedule of the key process (neck process) is formulated.
[0029]
Next, in step S63, the primary schedule of the TOP process (next process of HOT) is formulated, and then the schedule of the lower process (after the TOP process) is formulated (step S64). Next, in step S65, the above-prepared TOP process / downstream process schedule is evaluated (delivery date / production / inventory). If adjustment is necessary, the formulation work in steps S63 and S64 described above is reviewed.
[0030]
On the other hand, if there is no problem in the schedule of each process as a result of the determination in step S65, the process proceeds to step S66, and a schedule for the HOT / steel making process is established. Based on this schedule, the schedule of the HOT / steel making process is evaluated (delivery date / production / inventory) in step S67, and if there is a problem, the formulation work in step S66 is performed again. Further, if there is no problem in the evaluation result of step S67, the process proceeds to step S68 to determine the schedule of the HOT / steel making process.
[0031]
Next, in step S69, the TOP / downstream process schedule is evaluated, and it is determined whether there is a problem with each of the delivery date, production, and inventory. If there is a problem as a result of this determination, the TOP / lower process schedule is corrected in step S600, and after the correction, the evaluation in step S69 is performed again. If there is no problem as a result of the evaluation in step S69, the process proceeds to step S601, and the TOP / lower process schedule is determined.
[0032]
Next, a procedure for creating a daily execution schedule performed by the daily execution scheduling unit (ship allocation execution planning unit) 211 will be described with reference to the flowchart of FIG.
First, in the first step S71, the schedule information created in the weekly daily schedule is grasped, and in the next step S72, inconsistent portions of the inter-process schedule are displayed.
[0033]
Next, the process proceeds to step S73, the schedule is corrected, the schedule is verified based on the correction result (step S74), and whether the verification result is acceptable is determined in the next step S75. If there is no problem as a result of the verification, the scheduling is confirmed (step S76), and a work instruction resource is provided based on the established schedule (step S77). If the result of determination in step S75 is that there is a problem with the verification result, the process returns to step S73 and the above-described processing is repeated.
[0034]
Hereinafter, the time range of the schedule, which is a feature of the present invention, will be described with reference to FIGS. FIG. 8 is a diagram showing a list of scheduling business cycles and ranges, FIG. 9 is a diagram showing a list of instruction organization / instruction confirmation procedures, and FIG. 10 is a plan of shipment planning to instruction organization / instruction confirmation and each process. Is displayed in a list.
[0035]
As shown in these figures, the feature of the production plan in the present embodiment is that a weekly schedule (unit of a fixed number of days) is first formulated, and the flexibility of the schedule is secured within the week range. Within the unit schedule range, the daily schedule and work instructions for each process are finely adjusted in order to ensure that the delivery date can be met (weekly → daily → hourly).
[0036]
That is, with reference to FIG. 10, in the present embodiment, the HOT request roll week is determined for an order by arrangement details management based on the shipment plan. Based on this HOT request roll week, load adjustment between processes is performed in a weekly production plan, an order to be manufactured in a week to be planned (unit of a certain number of days) is determined, and a HOT execution roll week is determined.
[0037]
Further, a weekly daily schedule is formulated for orders in which the HOT execution roll week is the week to be planned (first area A). This weekly daily schedule includes a steelmaking weekly daily schedule, a HOT weekly daily schedule, and a lower process weekly daily schedule.
[0038]
Next, in the present embodiment, a daily execution schedule for the second region B is formulated based on the weekly daily schedule. This makes it possible to cope with production fluctuations. The daily execution schedule includes a steelmaking daily schedule, a HOT daily execution schedule, and a lower process daily execution schedule.
[0039]
Finally, in the present embodiment, instruction organization / determination (third region C) is formulated in units of time based on the daily execution schedule. As a result, it is possible to respond to operation fluctuations in each process based on the daily execution schedule.
[0040]
As shown in Fig. 9, in instruction organization / instruction confirmation, the instruction board order is determined by determining the board order suitable for the actual work, and the instruction organization result is corrected by the progress management of the actual product, etc., to confirm the instruction. And issue instructions for those that have been confirmed.
[0041]
Fig. 11 shows the amount of semi-finished product inventory in each process in an easy-to-understand manner. (A) secures scheduling (semi-finished product inventory) in a lot-max direction while considering to supply a constant inventory to the lower process. Shows when to do. According to this, a lot waiting period (increase in half-finished product inventory) occurs due to material supply from the upper process.
[0042]
  FIG. 11B shows a case where scheduling is created from the lower process based on the shipment plan, and scheduling is performed so that work lots are collected in response to a request from the lower process. In this case, the lot organization is described later.lotThe lots of each process are aggregated using “Code”.
[0043]
  Hereinafter, the steel product of the present invention will be described with reference to FIGS.Manufacturing management methodOne embodiment will be described. FIG. 12 shows the steel product of the present embodiment.Manufacturing management methodIt is a flowchart which shows.
[0044]
  As shown in FIG. 12, the steel product of the present embodimentManufacturing management methodWhen the process is started, the order information of the steel product is analyzed in the first step S11.
[0045]
The analysis of the order information is performed so that the steel product for which the order has been placed can be efficiently manufactured in a plurality of processes. In the present embodiment, there are six types of steel products. A case where a product is processed in 10 steps will be described.
[0046]
  That is, in FIG.lotAs shown in the code system explanatory diagram, “order number 01 (500 tons)”, “order number 02 (500 tons)”, “order number 03 (500 tons)”, “order number 04 (500 tons)”, “ For "Order No. 05 (500 tons)" and "Order No. 06 (500 tons)", "HOT Process", "Hot Roll Refining Process", "Pickling Process", "Cold Rolling Process", "Annealing Process" Manufactured through 10 processes: “tempering process”, “cold rolling refining process”, “plating process”, “shearing process”, “packaging process”.
[0047]
Next, it progresses to step S12 and the manufacturing specification in each process mentioned above is analyzed. This analysis is performed to check whether there is a product that can be commonly processed in each process for each of the steel products of the order numbers 1 to 6 described above.
[0048]
  When the analysis in step S12 is completed, the process proceeds to step S13, where each steel product having the order numbers 1 to 6 is assigned.lotGive a code. In this embodiment, for “order number 01 (500 tons)”, “AA” for “HOT process”, “DD” for “pickling process”, “GG” for “plating process”. "," Packing process "is given the code" KK ". Therefore, it was given to “order number 01 (500 tons)”lotThe code will be "AA-DD --------- GG-KK".
[0049]
  For “order number 02 (500 tons)”, “AA” for “HOT process”, “EE” for “pickling process”, “GG” for “plating process”, “packaging process” "KK" code is given to "." Therefore, it was given to “order number 01 (500 tons)”lotThe code is "AA-EE --------- GG-KK".
[0050]
  For “Order No. 03 (500 tons)”, “AA” for “HOT process”, “DD” for “pickling process”, “HH” for “plating process”, “packaging process” "KK" code is given to "." Therefore, it was given to “order number 01 (500 tons)”lotThe code is "AA-DD ------ HH--KK".
[0051]
  For “order number 04 (500 tons)”, “BB” for “HOT process”, “EE” for “pickling process”, “HH” for “plating process”, “packaging process” "LL" is assigned to "." Therefore, it was given to “order number 01 (500 tons)”lotThe code will be "BB-EE ------ HH-LL".
[0052]
  For “Order No. 05 (500 tons)”, “BB” for “HOT process”, “FF” for “pickling process”, “JJ” for “plating process”, “packaging process” "LL" is assigned to "." Therefore, it was given to “order number 01 (500 tons)”lotThe code will be "BB-FF ------- JJ-LL".
[0053]
  For “Order No. 06 (500 tons)”, “BB” for “HOT process”, “FF” for “pickling process”, “JJ” for “plating process”, “packaging process” "LL" is assigned to "." Therefore, it was given to “order number 01 (500 tons)”lotThe code will be "BB-FF ------- JJ-LL".
[0054]
  As described above, each steel product of “order number 01 (500 tons)” to “order number 06 (500 tons)”lotAfter giving the code,lotA production lot is organized based on the code (step S14).
[0055]
Next, based on the production lot organized in step S14, a work plan for each of the production processes “order number 01 (500 tons)” to “order number 06 (500 tons)” is created (step 15). Next, a work schedule for each process is formulated based on the created work plan (step 16).
[0056]
  FIG. 14 was created as described above.lotIt is a figure which shows the scheduling image by a code unit, The work process is shown on the vertical axis | shaft and the time is shown on the horizontal axis. As shown in FIG. 14, the steel product of the present embodimentManufacturing management methodGranted according to the shipping planlotSince scheduling is performed based on the code, it is possible to realize a steel product manufacturing plan that solves the above-described problems.
[0057]
That is, in the “HOT process”, steel products of “order number 01 (500 tons)” to “order number 03 (500 tons)” with the code “AA” are processed together. Further, steel products of “order number 04 (500 tons)” to “order number 06 (500 tons)” to which the code “BB” is assigned are processed together.
[0058]
In the “pickling process”, steel products of “order number 01 (500 tons)” and “order number 03 (500 tons)” given the code of “DD”, and the code of “EE” are given. Steel products of “order number 02 (500 tons)” and “order number 04 (500 tons)”, “order number 05 (500 tons)” and “order number 06 (500 tons) given the code of“ FF ” ) "Steel products are processed together.
[0059]
Furthermore, in the “plating process”, steel products of “order number 01 (500 tons)” and “order number 02 (500 tons)” given a code of “GG” and a code of “HH” were given. Steel products of “order number 03 (500 tons)” and “order number 04 (500 tons)”, “order number 05 (500 tons)” and “order number 06 (500 tons) given the code of“ JJ ” 'Steel products are processed together.
[0060]
In the “packing process”, steel products of “order number 01 (500 tons)”, “order number 02 (500 tons)” and “order number 03 (500 tons)” given the code “KK”. , Steel products of “order number 03 (500 tons)”, “order number 04 (500 tons)” and “order number 05 (500 tons)” with the code “LL” are processed together ing.
[0061]
  As described above, in the present embodiment, based on a shipping plan for a plurality of steel products.lotA code was given and given abovelotBy executing the processing of each manufacturing process based on the code, a suitable manufacturing plan can be realized in accordance with the shipping plan.
[0062]
Therefore, according to the present embodiment, it is possible to reduce the amount of processed products to be stocked in each manufacturing process as much as possible, shorten the manufacturing period of steel products, and reduce costs by reducing inventory (improving cash flow). Can be realized.
[0063]
In addition, it is possible to increase the operating rate in each process while reducing the inventory amount in each manufacturing process as much as possible, and to satisfy both the delivery date and the load state of each process.
[0064]
FIG. 15 is a diagram illustrating an internal configuration of a general computer system. In FIG. 15, reference numeral 1200 denotes a computer PC. The PC 1200 includes a CPU 1201, executes steel product manufacturing control software stored in a ROM 1202 or a hard disk (HD) 1211, or supplied from a floppy disk drive (FD) 1212, and sets each device connected to the system bus 1204. Overall control.
[0065]
The program stored in the CPU 1201 of the PC 1200, the ROM 1202, or the hard disk (HD) 1211 executes processing in each step in the present embodiment, and each functional unit of the scheduling apparatus is configured as a program.
[0066]
A RAM 1203 functions as a main memory, work area, and the like for the CPU 1201. A keyboard controller (KBC) 1205 controls instruction input from a keyboard (KB) 1209, a pointing printing device (not shown), or the like.
[0067]
Reference numeral 1206 denotes a CRT controller (CRTC) which controls display on a CRT display (CRT) 1210. A disk controller (DKC) 1207 is a hard disk (boot program (start program: a program that starts execution (operation) of personal computer hardware and software)), a plurality of applications, editing files, user files, a network management program, and the like. HD) 1211 and floppy disk (FD) 1212 are controlled.
[0068]
Reference numeral 1208 denotes a network interface card (NIC) that exchanges data bidirectionally with a network printer, another network device, or another PC via the LAN 1220. In this embodiment, the LAN 1220 is the same as the network 100 in FIG.
[0069]
(Another embodiment of the present invention)
The present invention may be applied to a system composed of a plurality of devices or an apparatus composed of a single device. In addition, for operating various devices so as to realize the functions of the above-described embodiments, for realizing the functions of the above-described embodiments for an apparatus or a computer in the system connected to the various devices. You may implement by supplying the program code of software and operating the said various devices according to the program stored in the computer (CPU or MPU) of the system or apparatus.
[0070]
In this case, the program code of the software itself realizes the functions of the above-described embodiments, and the program code itself and means for supplying the program code to the computer, for example, the program code are stored. This storage medium constitutes the present invention. As a storage medium for storing the program code, for example, a floppy disk, a hard disk, an optical disk, a magneto-optical disk, a CD-ROM, a magnetic tape, a nonvolatile memory card, a ROM, or the like can be used.
[0071]
Further, by executing the program code supplied by the computer, not only the functions described in the above-described embodiments are realized, but also the OS (operating system) or other operating system in which the program code is running on the computer. It goes without saying that the program code is also included in the embodiment of the present invention even when the functions described in the above-described embodiment are realized in cooperation with application software or the like.
[0072]
Further, after the supplied program code is stored in the memory provided in the function expansion board of the computer or the function expansion unit connected to the computer, the CPU provided in the function expansion board or function expansion unit based on the instruction of the program code The present invention also includes a case where the functions of the above-described embodiment are realized by performing part or all of the actual processing.
[0073]
【The invention's effect】
  As explained above, according to the present invention,Because the production plan is created according to the shipping plan,Necessary items can be manufactured as much as necessary when necessary, and the predictability of manufacturing the order by the date of shipment can be improved. Moreover, the amount of the semi-finished product stock and the product stock in each manufacturing process can be reduced as much as possible.
[0074]
  According to another aspect of the present invention, there is provided a steel product having a plurality of manufacturing processes.ManufacturingWhen you order the above steel products, the specifications for each manufacturing process are displayed collectively.lotGive the code abovelotSince the production lots in each production process are organized using codes to manage the production of steel products, a production plan scheduling result is obtained that matches the shipment plan and balances the load status in each production process without excess or deficiency. be able to. Thereby, while being able to satisfy the delivery date of the steel product which received the order, the production efficiency of steel products can be improved significantly.
[Brief description of the drawings]
FIG. 1 is a block diagram illustrating an example of a manufacturing scheduling apparatus according to the present invention.
FIG. 2 is a block diagram showing a main configuration of FIG.
FIG. 3 is a flowchart illustrating a procedure for creating a shipping plan.
FIG. 4 is a flowchart illustrating a procedure for creating arrangement details management.
FIG. 5 is a flowchart illustrating a procedure for creating a weekly production plan.
[Figure 6] Weekly daily scheduleofIt is a flowchart explaining a creation procedure.
FIG. 7 is a flowchart illustrating a procedure for creating a daily execution schedule.
FIG. 8 is a diagram showing a list of scheduling work cycles and ranges;
FIG. 9 is a diagram showing a list of instruction organization / instruction confirmation procedures;
FIG. 10 is a diagram showing a list of shipment plans to instruction organization / instruction confirmation and each process.
FIG. 11 is a diagram showing the amount of semi-finished product inventory in each step in an easily understandable manner.
FIG. 12 is a flowchart illustrating an embodiment of the present invention and explaining a procedure of a steel product manufacturing management method.
FIG. 13 is a diagram illustrating an example of a lot code.
FIG. 14 is a diagram showing a scheduling image in units of lot codes.
FIG. 15 is a block diagram illustrating an example of a computer system.
FIG. 16 is a diagram showing a list of processes for preparing a steel product manufacturing plan.
FIG. 17 is a diagram showing a lot-max oriented production method.
[Explanation of symbols]
101 head office
102 Order processing means
103 Quality design means
104 Order database
105 Order entry information database
106 Weekly planning means
107 Order progress management database
108 Schedule management database
109 Work in progress management database
110 Daily planning means
111 Operation instruction means
112 Operation results management means
113 Shipping means

Claims (8)

In the manufacturing management method of steel products by computer,
An extraction step in which the shipping planning unit extracts order information to be manufactured within a predetermined number of days from the input order information;
The order information extracted in the extraction step is aggregated by freight port or river bank, and a lot is organized, and among the organized lots, correction is made to aggregate at the freight port or river bank that can be stacked at the freight port or river bank. A shipping plan creation step in which the above-mentioned shipping planning section creates a shipping plan in which the planned shipping lot is determined and the scheduled date of shipping is set,
Starting from the scheduled shipping date of the shipping plan created in the above shipping plan creation step, the first date is set for each order information by going back to the schedule from the lower process when manufacturing the steel product and starting the production for each order information . A first plan creation step in which a first plan department creates a plan;
Based on the first plan created in the first plan creation step, a second plan creation step in which a second plan section creates a second plan for performing manufacturing on a daily basis;
A steel product manufacturing method comprising: a work command information creation step in which a work command creation unit creates work command information in units of time based on the second plan created in the second plan creation step. Management method. In the first plan creation step , as a date for starting production, a date for performing a hot rolling process when manufacturing a steel product is obtained, and a date for performing the hot rolling process is set for each order information . The production management method for steel products according to claim 1, wherein one plan is created.   In the first plan creation step, when the first plan is created by tracing back the schedule from the lower process, a plurality of lots are aggregated so as to be processed together in the manufacturing process, and the first plan is collected. The manufacturing management method for steel products according to claim 2, wherein: A manufacturing scheduling apparatus for steel products,
Order information to be manufactured within a specified number of days is extracted from the input order information, and is organized by freight port or riverbank, and lots are organized. Of the organized lots, they are stacked at the ferry port or riverbank. A shipping plan creation means for creating a shipping plan in which a planned shipping lot is determined by correcting the aggregation at a possible landing port or riverside, and a scheduled shipping date is set;
Starting from the scheduled shipping date of the shipping plan created by the above shipping plan creation means, the first date that sets the date to start manufacturing for each order information is traced back from the lower process when manufacturing steel products A first plan creation means for creating a plan;
Based on the first plan created by the first plan creation means, a second plan creation means for creating a second plan for performing manufacturing on a daily basis;
A manufacturing scheduling apparatus comprising: work instruction information creating means for creating work instruction information in units of time based on the second plan created by the second plan creating means. The first plan creation means obtains a date for performing a hot rolling process when producing a steel product as a date for starting production, and sets the date for performing the hot rolling process for each order information . The manufacturing scheduling apparatus according to claim 4, wherein one plan is created.   The first plan creation means collects a plurality of lots and processes them together in the manufacturing process when the first plan is created by tracing back the schedule from the lower process, and the first plan is collected. The manufacturing scheduling apparatus according to claim 5, wherein:   A computer-readable storage medium storing a program for causing a computer to execute each step of the steel product manufacturing management method according to any one of claims 1 to 3.   A computer-readable storage medium storing a program for causing a computer to function as each means according to any one of claims 4 to 6.

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