JP2010170368A - System, method and program for supporting implementation of production management, and recording medium with the program recorded thereon - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and apparatus for supporting implementation of production management, a computer program and a recording medium, for determining the order of production processes while reasonably maximizing the lot size in a mixed-flow production process producing a plurality of products and delivery satisfaction regarding the total waiting time of a customer among a plurality of in-process queued lot groups different in production priorities. <P>SOLUTION: The method varies both the time when a product is started to be produced in a production process and an elapsed time from the production start time, varies production priority information according to operating efficiency of the process, prepares a work order table in each process by computing the lot size and the production priority information, and provides a process worker with work lot information so that the worker refers to the information and selects a work lot to carry out the work. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention uses a plurality of devices such as semiconductor wafer processing and inspection (hereinafter referred to as “processing including both”) or machining, etc. Production management execution support system, production management execution support method, production management execution support program, and production management execution support program for supporting the setting of a construction order when manufacturing a plurality of products having different processing methods and a lot which is a group of the products The present invention relates to a recording medium.

  Effective use of expensive manufacturing equipment (hereinafter abbreviated as equipment) is required for the production of products that require complex processing processes, such as semiconductor wafers and advanced machines, and whose processing conditions, procedures, and production numbers differ depending on the product type. For the purpose of illustration, it is common to employ a job shop type device layout in which devices of the same type are gathered in one place to form a device group.

  The products processed in this job shop system production line include multiple products with different production priorities, and multiple products with different conditions or different types of processing depending on the processing progress even though the same product is the same device. In general, lots are mixed, and the quantity, number, capacity, or weight (hereinafter referred to as lot size) constituting the lots are different. In other words, the production priorities of products and lots waiting for processing of one type of equipment are all considered to be different. Often, there is a situation in which, among a plurality of lots having different production priorities, a certain product must be given priority over others and a product must be completed in a short period of time.

  Especially for recent products with a short life cycle, prototypes for processing process verification and engineering samples for customer submission can be prototyped in parallel with the production of mass-produced products in a short period of time, and flexibly responding to customer requirements In order to improve customer satisfaction, it is important to respond quickly to delivery and quantity requirements such as production. In other words, it is extremely important to improve the competitiveness of a manufacturer by flexibly responding to customer requirements for production priority.

  Proposals as disclosed in Patent Documents 1 to 7 have been made for efficient production.

Japanese Patent Application Laid-Open No. 11-145021 JP 2007-233579 A JP-A-6-176030 JP-A-6-266413 JP 2002-73148 A JP 2002-173204 A JP 2003-288112 A

  FIG. 1 is a configuration example of an apparatus and a process terminal of a production line for manufacturing semiconductor wafers using such a job shop type production line. In this production line, each job shop is shown as process 1, process 2, process 3, and process 4, and each process is equipped with a process terminal for output of production instruction information and input of processing results. Instruction information of the line manager and progress report information such as lot processing start and lot processing end in the process are exchanged with the production line management computer system.

  In such a production line, the first stage processing of the product is performed in any one of the device groups 1a to 1d in the process 1, and the product that has completed this processing is a processing waiting lot waiting shelf (not shown) in the process 2 To arrive. The arrival of this product is asynchronous with the processing schedule in step 2. In addition, the processing time for each process often differs depending on the product or lot.

  The product arriving at step 2 is processed by any one of the devices 2a to 2c in step 2, and the processed product proceeds to step 3 or returns to step 1. Hereinafter, the product that has proceeded to Step 3 and Step 4 is completed by repeating any one of Step 1 to Step 4 or through a final inspection in accordance with a processing procedure determined for each product.

Here, control of the lot processing sequence and processing start time in each process (process 1, process 2, process 3, and process 4) is generally performed as follows.
(A) When the processing of the immediately preceding lot is completed, the worker selects the lot that is determined to have the highest production priority from the in-process devices that have arrived, and performs processing using this apparatus.
(B) When a lot that is judged to have a high priority is likely to arrive from the previous process, the processing start time is estimated while contacting the worker of the previous process, for example, the lot is left in an empty state. The processing order is determined by waiting for the arrival of the machine.
(C) If you want to ensure that a lot with high production priority is delivered in a short construction period, assign a dedicated progress manager to that lot, and make a decision based on the rule of thumb of this dedicated person to match the progress of the lot. Acceptance of lots in the next process and adjustment of the start of processing may be performed immediately.

  In the control method from (a) to (c) above, it is desirable to realize the start order that reflects the customer's expectations, but the producer evaluates the impact of delivery on all customers from the relationship between lot size and order. If this is not done, it is impossible to calculate a reasonable start order in response to this, and there is a risk that customer satisfaction will be reduced. For example, when delivery to a customer waiting for a small lot is delayed, the expectation that it should be received early because it is a small amount and the size of the delayed actual gap directly decrease the satisfaction regarding the delivery date.

The following is a general example of a method for determining the construction order that maximizes the impact of the lot size S on the delivery date and the customer satisfaction. For example, in the process of performing non-batch processing (also known as single wafer processing) , There are i lots that can be started, and the lot names are L1, L2, L3,..., Li, and the size of each lot is S1, S2, S3,. When the process production time required for processing each lot is T1, T2, T3,..., Ti, the production time Ti for each lot is expressed as a function F (Si) of the lot size Si. Can be handled as follows. Assuming that the cycle time required for 1 unit size production determined in each process is a, and the total of the setup time and post-processing time applied before and after the construction in each process is b,
[Formula 1] T1 = F (S1) = a * S1 + b (1)
[Expression 2] T2 = F (S2) = a * S2 + b (2)
[Equation 3] T3 = F (S3) = a * S3 + b (3)
・
・
[Expression 4] Ti = F (Si) = a * Si + b (4)
In (Expression 1) to (Expression 4), the condition [Expression 5] S1≤S2≤S3≤ ... ≤Si (5)
[Equation 6] T1 ≦ T2 ≦ T3 ≦... ≦ Ti (6)
Holds. At this time, the total process production time required for the process is [Equation 7] ΣTS = T1 + T2 + T3 +... + Ti (7)
On the other hand, the required production time Ti of each lot in the batch processing step is constant regardless of the lot size Si, and is given by the following equation (8).
[Equation 8] T1 = T2 = T3 =... = Ti = a + b (8)
In other words, the total process production required time ΣTS takes the value calculated by Formula 8 regardless of the start order in the lots L1, L2, L3,..., Li. It is rare to emphasize the lot size relationship in determining the start order.

Here, paying attention to a specific customer who waits for a lot Li on the production line in which the relationship of the above formulas 1 to 7 is established, and the time for which the specific customer waits for the lot is TWi, the lot start order is L1 → L2 → L3. → ·································· The waiting time TWi of the specific customer is as follows.
[Equation 9] TWi = T1 + T2 + T3 +... + Ti (9)
The meaning of Equation 9 is that the customer waiting for the lot of Li is the sum of the processing time of L1, the processing time of L2, the processing time of L3, and the processing time of all lots up to Li thereafter. . This time, paying attention to all customers, the total customer waiting time ΣTWSx when the start order in the process is L1 → L2 → L3 →... → Li is the result of applying Equation 9 to all lots, that is, all customers. It becomes as follows.
[Equation 10] ΣTWSx = TW1 + TW2 + TW3 +... + TWi
= T1 + (T1 + T2) + (T1 + T2 + T3) + ... + (T1 + T2 + T3 + ... + Ti) (10)
If the start order is changed for the two lots L1 and L3, and the start order in the process is L3 → L2 → L1 →... → Li, the total customer waiting time ΣTWSy is as follows.
[Equation 11] ΣTWSy = TW3 + TW2 + TW1 +... + TWi
= T3 + (T3 + T2) + (T3 + T2 + T1) + ... + (T1 + T2 + T3 + ... + Ti) (11)
The difference ΣTD of the total customer waiting time of Expression 10 and Expression 11 is [Expression 12] ΣTD = ΣTWSy−ΣTWSx
= (T3 + (T3 + T2) + (T3 + T2 + T1))-(T1 + (T1 + T2) + (T1 + T2 + T3))
= 2 × T3−2 × T1 (12)
If the above equation 5 is satisfied, equation 6 is satisfied, and if equation 6 is satisfied, equation 12 is zero or more. Therefore, when the lot size S3 is larger than the lot size S1, the total waiting time ΣTWS of all customers becomes large. It shows that it will end. After all, when only one lot can be produced at the same time, when Equation 6 and Equation 7 are satisfied, the total waiting time ΣTWS of all customers gets the minimum value when the construction order is as follows: I understand that.

Lot sizes S1, S2, S3,..., Si in ascending order, that is, L1 → L2 → L3 →... → Li, and the required production time ΣTS of the process remains constant, and the total waiting time ΣTWS of all customers [Equation 13] ΣTWS = TW1 + TW2 + TW3 +... + TWi
= T1 + (T1 + T2) + (T1 + T2 + T3) + ... + (T1 + T2 + T3 + ... + Ti) (13)
The minimum value represented by In other words, looking at the contents of ΣTWS in Equation 13 which is the total waiting time of all customers, minimizing the waiting time for construction that is not my own processing time will minimize the total time for all customers waiting for the product. Connected. Specifically, it is understood that the best method is to start from the lot with the smallest lot size, proceed in order from the smallest lot size, and start the lot with the largest lot size last. Assuming that each customer's delivery date satisfaction is equivalent to the reciprocal of the customer's waiting time for the product or proportional to the reciprocal of the waiting time, the sum of each customer's satisfaction, that is, the total value of all customer satisfaction can be the maximum value. The construction order will be the order of smaller lot sizes. Therefore, it is a problem to calculate a reasonable start order considering the lot size in order not to reduce customer satisfaction.

  On the other hand, the designation or setting of production priority of products and lots (hereinafter referred to as production priority setting) in the control method from (a) to (c) is a very important issue. If it is a production line that utilizes information, it can be said that a reasonable update means for maintaining the usefulness of production priority information is necessary. However, as the procedure from (a) to (c), for example, Such an efficient production management method has been proposed, but there is no proposal related to a rational priority update method or lot size.

  For Patent Document 1, for example, an improvement proposal such as Patent Document 2 aiming to suppress an increase in the total number of in-process lots between apparatuses has been made. According to the proposal of Patent Document 2, it is possible to rationally select processes and apparatuses to be preferentially started from a plurality of in-process lots of a plurality of processes and apparatuses, and the process staying state while suppressing an increase in the total number of in-process lots. However, there is no proposal related to a rational priority update method or lot size.

  On the other hand, according to Patent Document 3, the production priority is determined by linearly combining the production priorities for each product according to the degree of deviation from the initial production schedule that appears at the time of a device failure, and the order of processing queues is determined. Proposal, Proposal of Patent Document 4 that proposes the determination of production priority in consideration of required delivery date and production progress, Patent that recommends priority setting of products to be started on the basis of the index of equipment load factor of the next process Although there are proposals in Document 5, there are no proposals related to rational priority update methods and lot sizes, as in Patent Documents 1 and 2.

  Further, although there is a proposal of Patent Document 6 that proposes allocation to an apparatus, that is, selection of a construction lot by paying attention to the lot size, it differs from the generality that the ascending order of the lot size in the background art should be taken. Yes. Although there is Patent Document 7 as a proposal for determining the processing order of batch-assembled products, there is no proposal regarding the production priority and its update, and the lot size is only one element of the calculation and is in the dominant position for determining the order. Since there is not, it does not have the generality that the ascending order of the lot size in the background art should be taken as in Patent Document 6.

  The use of production priority can be said to be excellent production management as proposed in Patent Documents 1 to 5, but handling the production priority as a fixed issue raises concerns about information obsolescence. Resulting in reduced utility. If there is no rational means to update the production priority to maintain usability, it will take a lot of time to update the production lot when many lots are mixed, and the production priority once set within the time constraints Therefore, the number of lots that can make the production priority follow the change in the daily production situation and the change in customer requirements is limited. In addition to this, if there is an express flow of prototype products, it will be necessary to adjust the production priority of the existing flow lot and prototype lot in a short time, and the time taken to update the production priority of the mass production lot will further decrease, Increasingly, the usefulness of production priority is decreasing. If it is a production line that uses production priority, it can be said that a reasonable renewal means for maintaining its usefulness is necessary. In addition, in the proposals of Patent Documents 1 to 5, the priority of the product is selected, but the priority selection of the lot is not shown in the same product. For example, the prototype lot is in the processing queue order. It is estimated that the order cannot be selected when starting at the beginning. It can be said that it is good to set the production priority for each lot and update it regularly.

  In Patent Documents 1 to 5, which do not consider the order of construction in relation to the lot size, the aim is to optimize on the producer side. However, when looking at the customer side, the total waiting time for all customers may rather increase. The inherent risk of lowering customer satisfaction. Further, in Patent Document 6, since the method gives priority to the situation on the manufacturing side, it is considered to be contrary to the generality described in the background art and rather to reduce customer satisfaction.

  The above problem solving method, that is, a reasonable update means is necessary to maintain the usefulness of the production priority, and the start order for obtaining the maximum customer satisfaction must be in the order of the smallest lot size. However, since there has never been a method for rationally solving the problem while balancing the two, determination of the start order in the production process still has a problem.

  In addition to the issues listed above, a rational and effective method for determining which condition group should be preferentially started in the processing condition grouping in the batch processing process has not yet been presented. Lot selection is still left to the discretion of the person in charge of the process and the production line manager, but there remains a situation where there is no way to rationally relate the balance of lot size and production priority. .

  In the present invention, in the production management execution support method in which the production plan execution in the mixed flow production process for producing a plurality of products is performed by giving the production priority information to the lot to be produced, the production priority information of each lot is the production priority information. It is composed of an initial number and a production priority update number, and the production priority initial number and the production priority update number can be set by a quantity that is not related to each other. Sometimes the initial number of production priority is set as an initial value, and when processing is in progress, all lots are added at the same time by the production priority update number at a predetermined time, and production priority information updated as described above And a step of creating a construction order index by dividing the lot size of each lot by the updated production priority information every predetermined time, and the construction order index Storing, a step of comparing the size of the start order index for each lot, a step of rearranging the lots having the smallest value as a result of the size comparison to give the highest priority, and the rearranged start lots The production management execution support method includes a step of outputting order information.

  The production priority update number is a production plan execution support method that allows a different number for each product.

  The production plan execution support method allows the initial number of production priorities to be different for each product.

  The production priority information may be a production plan execution support method that allows a step of changing the production priority update number during production.

  Further, a production plan execution is characterized in that a step for transferring the production priority information between different lots is added so that the production priority information can be transferred to another lot of the same product. A support method.

  Further, the production order index calculation step is a production management execution support method for calculating a construction order index after converting the production priority information into a square of the production priority information.

  The production order index calculation step is a production management execution support method for calculating a construction order index after converting the production priority information into the square root number of the production priority information.

  Also, a production management execution support method in which the start order index calculation step can be selected from a plurality of steps.

  In addition, the production order index calculation step calculates the start order index after converting the production priority information using the factory operation index calculated from the maximum number of manufacturing capacity and the required number of factories as a multiplier. An execution support method is used.

  In addition, the step of comparing the batch processing order index in the batch processing process where the processing conditions of products and lots are not necessarily the same is the step of calculating the lot size with priority information for each lot of the same processing conditions, and the total for each batch is obtained. A production management execution support method comprising a step, a step of comparing the sums of operation results for each batch that can be started, a step of creating a batch order in ascending order of the sum value, and a step of outputting the created batch order .

  Further, the step of comparing the sum of the calculation results for each batch that can be started compares the batches in the full batch state, sets the batch order in the order from the smallest sum value, and then compares the batches in the non-full batch state. The production management execution support method is characterized in that the batch order is set in ascending order of the total value, and the batch in the full batch state is started in preference to the batch in the non-full batch state.

  Also, in the production management execution support program that performs production plan execution in a mixed flow production process that produces multiple products by giving production priority information to the lot to be produced, the production priority information of each lot is the initial number of production priorities. And the production priority information is in the middle of processing after the procedure of initializing the production priority initial number which is dimensionless and 1 or more at the time of processing input of the lot. Has a procedure for adding the number of production priority updates that is dimensionless and 1 or more at a predetermined time for all lots at once and a procedure for storing the addition result, and the production after updating the lot size of each lot every predetermined time Production management execution support program that has a procedure to create a start order index divided by priority information and a procedure to create and output a reasonable start order by comparing the start order index for each lot To.

  The production priority update number is a production management execution support program that allows different numbers for each product.

  The initial production priority number is a production management execution support program that allows different numbers for each product.

  The production priority information may be a production management execution support program that allows a procedure for changing the production priority update number during production.

  In addition, a procedure for transferring the production priority information and the production priority update number between different lots is added, so that the production priority information can be transferred to another lot of the same product. The production management execution support program is characterized by this.

  The construction order index calculation procedure is a production management execution support program that is performed after the production priority information is converted into a square of the production priority information.

  Further, the construction order index calculation procedure is a production management execution support program that is performed after the production priority information is converted into the square root number of the production priority information.

  Further, a production management execution support program is provided in which the construction order index calculation procedure can be selected from a plurality of procedures.

  In addition, there is a procedure for calculating the factory operation index from the production capacity information database information and the sales order information database, and after the procedure for converting the production priority information using the factory operation index as a multiplier, A production management execution support program for executing a calculation procedure is used.

  In addition, the comparison of batch processing order index in batch processing process where the processing conditions of products and lots are not necessarily the same is a procedure for calculating the lot size for each lot of the same processing conditions with the production priority information, and then the procedure for obtaining the sum, Furthermore, a production management execution support program having a procedure for obtaining the sum of calculation results for each batch that can be started, a procedure for comparing the sums, and a procedure for recommending a batch with a condition that the sum value is the smallest value with the highest priority.

  Further, the step of comparing the sum of the calculation results for each batch that can be started compares the batches in the full batch state, sets the batch order in the order from the smallest sum value, and then compares the batches in the non-full batch state. The production management execution support program is characterized in that the batch order is set in ascending order of the total value, and the batch in the full batch state is started in preference to the batch in the non-full batch state.

  The production management system includes a production management system, a sales management system, and a production line system, and is a production management execution support system that produces a plurality of products in a plurality of processes. The production management system includes a product information database and a production system. An external storage device that stores a capability information database and an inventory information database, a control unit that calculates based on the database and controls the entire production management system, and a main memory that stores the results obtained by the calculation An apparatus, a clock unit that provides time information, an output unit that outputs the calculation result, an input / output unit that inputs information to the database or instructs information output, and a communication unit that receives and transmits information The sales management system includes an order information input / output unit for inputting order information from a customer, and an order information data memory for storing the order information. The production line system is connected to the device of each process of the production line and gives a manufacturing instruction to the device or operates the device. It comprises a process terminal unit for grasping the situation and a communication unit for receiving and transmitting information, and each communication unit of the production management system, the sales management system, and the production line system is a communication line unit. The production management execution support device is characterized in that it receives and transmits information to and from each other.

  In addition, a step of setting a production priority initial number and a production priority update number in which the production priority information is 1 or more for each lot for each lot, and the production priority is the same as the production priority initial number. The number of frequency updates can be selected by a quantity that is not related to each other. The production priority information is a step of setting the initial number of production priority as an initial value when processing a lot. A step of adding a production priority update number with a restriction that the numerical value is zero or more at a predetermined time for each lot at a time, a step of reading and storing the production priority information set or updated as described above, and a predetermined A step of creating a construction order index by dividing the lot size of each lot by the updated production priority information every time, and a step of storing the construction order index A step of comparing the size of the construction order index for each lot, a step of rearranging the lots having the smallest value as a result of the magnitude comparison to give the highest priority, and a step of outputting rearranged construction lot order information The computer-readable recording medium is characterized in that a program for executing the above is recorded.

  In addition, a computer-readable program further comprising a program for executing a step of changing one or both of the initial production priority number and the production priority update number constituting the production priority information during production. A possible recording medium is used.

  Further, a computer-readable recording medium is provided, in which a program for executing a step for transferring the production priority information between different lots is additionally recorded.

  Further, a computer-readable recording medium characterized by additionally recording a program for executing a step of converting the production priority information into a square of the production priority information in the process order index calculation process; To do.

  Further, a computer-readable recording medium characterized by additionally recording a program for executing the step of converting the production priority information into the square root number of the production priority information in the process order index calculation process And

  The computer-readable recording medium is characterized in that a program for executing the step of calculating the construction order index is additionally recorded.

  Further, in the process of calculating the start order index, a program for executing a step of calculating from the maximum number of manufacturing capacities of a factory and a required number of manufacturing, and a step of converting the production priority information using a factory operation index as a multiplier Is recorded as a computer-readable recording medium.

  In addition, in order to compare the batch processing order index, the step of calculating the lot size with priority information for each lot of the same processing conditions, the step of obtaining the total for each batch, the total of the calculation results for each batch that can be started A batch in which the processing conditions of products and lots are not necessarily the same by additionally recording a program for executing the step of comparing, the step of creating the batch order in the order of the smaller total value, and the step of outputting the created batch order A computer-readable recording medium for processing steps.

  Then, the step of comparing the sums of the calculation results for each batch that can be started compares the batches in the full batch state, sets the batch order in the order of the sum value, and then compares the batches in the non-full batch state. The batch order is set in ascending order of the total value, and a batch in a full batch state is started in preference to a batch in a non-full batch state.

  According to the present invention, the production priority information for each lot obtained by updating the lot size information at a constant time cycle without changing the total manufacturing time of the producer, for example, as it is or as a square number. In addition, the number of square roots is taken, and the start order index obtained as a result of the division is arranged in ascending order, and a comparison in which the numerical value is the highest priority is performed, so that the start order with dramatically increased rationality can be obtained. As a result, the delivery date satisfaction of all customers can be prevented relatively less than when not implementing the present invention. In addition, the order of priority for each batch assembly in the batch processing process is also dramatically increased by comparing each batch assembly total value of the above-mentioned construction order index in ascending order and making the batch assembly with the smallest numerical value the highest priority. A start order with increased rationality can be obtained, and the satisfaction of delivery dates for all customers can be prevented relatively less than when the present invention is not implemented.

The block diagram of a job shop type production line. Production management execution support computer system configuration diagram according to an embodiment of the present invention Time lapse transition diagram of production priority information Y Sub-procedure example of new lot generation by conventional new production lot order form Explanatory drawing of a sub procedure example of new lot generation according to the embodiment of the present invention Production priority information update sub-procedure example explanatory diagram according to an embodiment of the present invention Explanatory drawing of a sub-procedure determination sub-procedure example according to an embodiment of the present invention Explanatory drawing of an example of a construction order determination procedure according to an embodiment of the present invention Example of a conventional procedure for creating a construction order Explanatory drawing of an example of a construction order determination procedure according to an embodiment of the present invention Explanatory drawing of an example of a construction order determination procedure according to an embodiment of the present invention Explanatory drawing of an example of a construction order determination procedure according to an embodiment of the present invention Explanatory drawing of an example of a construction order determination procedure according to an embodiment of the present invention Explanatory drawing of an example of a construction order determination procedure according to an embodiment of the present invention Explanatory drawing of an example of a construction order determination procedure according to an embodiment of the present invention Explanatory drawing concerning embodiment of this invention Explanatory drawing of an example of a construction order determination procedure according to an embodiment of the present invention

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1 to 16 are denoted by the same reference numerals, and detailed description thereof is omitted.

  FIG. 2 is a block diagram showing an embodiment of a production management execution support computer system for rationally calculating the construction order index J based on periodic update of the production priority information Y. FIG. Implementation of a program and procedure for a production management execution support method for obtaining a start order list using the calculated start order index J using the updated start order information J An example is shown.

  The production management execution support computer system shown in FIG. 2 includes a production management system, a sales management system, and a production line system.

  The production management system includes a product information database 1 which is information related to the manufacture of all products including prototypes, a production capacity information database 2 which is information on all processing conditions and processing time of all devices in all processes of all products, and .., Li,... Lm processing order information, next processing step information, and the like, and the progress of processing and lot sizes S1, S2, S3,. , Si,... Sm, the external storage device 14 that stores the stock information database 3, and the control unit 12 that controls the entire production management system by performing calculations based on these information. Main storage device 13 for storing the obtained results, clock unit 15 for providing time information, display output unit 7 and print output unit 6 for outputting calculation results, input of information to the above-mentioned database or information The sales management system is composed of an input / output unit 4 that performs force instruction, a communication unit 5 and the like. 11 and the like, and the production line system is connected to the device of each process of the factory production line and gives a manufacturing instruction to the device, grasps the operation status of the device, and communicates via the communication unit 5 And a process terminal unit 8 for exchanging information with the communication line unit 9. The production management system, the sales management system, and the production line system are connected to the communication line unit 9 via the communication units 5, 17, 18, 19, 20, and 21 of the respective systems, and send and receive information to and from each other. .

  In the production management execution support computer system configured as described above, information such as the processing progress status and the number of completed lots of the production line system is stored in the inventory information database, and the order information received from the customer and the inventory information database are stored. Collate, check the shortage status of each product, calculate the required number of new input lots, and instruct the input of new lots. The details are as follows. That is, when the control unit 12 periodically obtains the calculation start timing information based on the time interval t set in the clock unit 15, the control unit 12 develops each product from the order information database unit 11 through the communication unit 5 and the communication line unit 9. Get order quantity information. Next, the inventory quantity information is read from the inventory information database unit 3 and the shortage quantity by product and the product quantity are calculated by calculating the order quantity information and the inventory quantity information for each product using the main storage device 13 and the external storage device 14. The total deficiency P, which is the total number of deficiencies, is calculated, and the new input number for each product is obtained from the production capacity information database unit 2 using the manufacturing yield for each product. The number of new inputs by product obtained here is stored in the inventory information database unit 3 and used as data for a new production lot arrangement document.

  In FIG. 8, which is an example of an implementation procedure of the present invention, when the calculation start timing information of the clock unit 15 is obtained in step S10, the order information data obtained from the order information database unit 11 through the communication unit 5 and the communication line 9 in step S1000. The procedure to expand the production management information and create a new production lot arrangement form is implemented. A new input lot generation procedure is executed in step S2000 based on the new production lot arrangement form, where the new lot includes lot size information S, initial production priority number information Ys, and production priority update number information k. Is given production priority information Y. On the other hand, no treatment is added to the production priority information Y of existing lots in process flow other than the new lot. In step S3000, the production priority information Y is updated for all production lots, that is, both the generated new input lot and the existing process flow lot. In step S4000, the lot order S is calculated using the lot size S and the production priority information Y, and then the lot list is sorted in ascending order of the value of J to create the start order list. The procedure from step S10 to step S4000 is performed in a time cycle set in the clock unit 10.

  FIG. 9 is a general example of construction order list creation in the prior art performed using a system similar to the production management execution support computer system shown in FIG.

  In FIG. 9, which is an example of a conventional general procedure, when the calculation start timing information of the clock unit 15 is obtained or the production line manager is invented, the order information database 11 through the communication unit 5 and the communication line 9 in step S1000. The obtained order information data is expanded into production management information, and a procedure for creating a new production lot arrangement is executed. Based on the new production lot arrangement, a new input lot generation procedure is executed in step S2000 to generate a new lot. And lot size information S and production priority information Y are given. It is the same as in the embodiment of the present invention that no treatment is applied to the production priority information Y of the existing lot in process flow other than the new lot.

  In step S3000 in FIG. 9, which is a general procedure example, the production priority information Y given in step S2000 to the new input lot and the production priority information already given at the time of input are given to produce an existing lot in process flow. Using the priority information Y, a provisional production priority list is created by the overall comparison calculation of the production priority information Y of all newly created lots. In step S4000, based on the provisional production priority list. The lot list is rearranged in the order according to the rules determined by the production line manager, and the construction order list is output in step S5000. Here, the production priority information Y of each lot remains fixed or there is no rational update means, so it is common to maintain what was set at the time of input, and this was done for a considerable period of time. It is clear that it is difficult to correctly reflect the current production situation. The procedure from step S1000 to step S5000 is generally performed by a production manager in advance in a time schedule set in the production management system, for example, once or twice a day.

  Conventional General Procedure FIG. 4 is given as an example of a general sub procedure in which step S2000 in FIG. 9 is developed in more detail. In the sub-procedure, a procedure S2040 for obtaining the number of additional production required from the number of manufacturing arrangements and the yield, a step S2050 for obtaining the number of input lots from the additional production required number and the lot work integer, a procedure S2060 for generating a new lot, and a lot number are assigned. Procedure S2070, procedure S2075 for giving production priority information to the new lot, and the like are included. .

  Comparing FIG. 8 with one implementation procedure example of the present invention and FIG. 9 with a general procedure, one is whether or not the construction priority order calculation is performed in a fixed time cycle. This is from step S5000 to step S10 in FIG. 8 corresponds to whether or not the production priority information Y related to the start priority order determination calculation is increased and updated in a certain time cycle. This is the same as the sub-procedure of step S3000 in FIG. It is in.

  The fact that the start priority calculation is not performed means that the production priority information Y set back a considerable time from the flow of production lots is used. Although there is some meaning, it is difficult to say that it reflects the latest production situation correctly, and its usefulness is limited.

  In addition, increasing and updating the production priority information Y related to the start priority determination calculation in a certain time cycle increases the degree of tightness with respect to the customer delivery date as time passes. Accordingly, the production priority is increased. Since it should be inevitable, it can be said that it is more effective than the method that does not update.

  Next, the effect of calculating the start order index J using the update result of the production priority information Y and the lot size information S described above and determining the start order in ascending order will be described. In the production line, the lots that can start the production process of interest are L1, L2, L3,..., Li, and the production priority information Y of each lot is Y1, Y2, Y3,. The production priority initial number Ys of each lot is set equal to Ys, and the production priority update number information k is set equal to k similarly. Here, the production priority initial number Ys and the production priority update number k are limited to dimensionless one or more numerical values.

  Production priority update repetition cycle time information set by the production line manager through the input / output unit 4 is stored in the clock unit 15, and the clock unit 15 notifies the control unit 12 every production priority update repetition cycle time t. An instruction to update production priority information Y1, Y2, Y3,.

.., Li production priority information Y1, Y2, Y3,..., Yi at a certain time is K1, H2, K3,. If Ki time has elapsed, the following expressions 17 to 20 are expressed. Here, K1 to Ki may be equal to or different from each other, and in short, are various values of zero or more. However, it is of course possible to follow the lot insertion order. For example, if the lot insertion order is L1 → L2 → L3 →... → Li, then K1 ≧ K2 ≧ K3 ≧.
[Formula 14] Y1 = Ys + k * (K1 / t) (14)
[Formula 15] Y2 = Ys + k * (K2 / t) (15)
[Formula 16] Y3 = Ys + k * (K3 / t) (16)
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・
[Equation 17] Yi = Ys + k * (Ki / t) (17)
It may be necessary to perform an operation such as taking an integer part of the result of calculation, but the purpose here is to explain the concept, and such an operation is not performed to avoid complication. The same applies to the following description.

  If the change of Y1 to Yi expressed by the above-mentioned formulas 14 to 17 is illustrated, it is as shown in FIG. The production priority information Y1, Y2, Y3,..., Yi is also dimensionless because both the initial production priority number Ys and the production priority update number k are limited to one or more dimensionless numerical values. It is limited to 1 or more numerical values.

  As can be seen from Equation 14 to Equation 17 and FIG. 3, all lots have the same initial production priority number Ys at the time of input, the same production priority update number k, and production ends individually for each lot. It is maintained while repeating a certain number of incremental updates. That is, the production priority information Y1, Y2, Y3,..., Yi can be reasonably maintained at the production priority state expected by the production line manager while being constantly updated. The production priority information Y1, Y2, Y3,..., Yi maintained in this way is treated as a lot with a large numerical value as a high production priority, and is used to calculate the construction order index J.

  .., Si to start construction in ascending order of the numerical values to maximize the total customer satisfaction, and to produce priority information Y1, Y2, Y3,... In order to make it possible to start construction in descending order of Yi and start construction in order of production priority, the construction order indices J1, J2, J3,..., Ji are calculated as follows.

Each time the clock unit 15 instructs, the control unit 12 calculates the construction order indices J1, J2, J3,..., Ji which are expressed by the following formulas 21 to 24, and sequentially stores them in the inventory information database unit 3. go.
[Formula 18] J1 = S1 / Y1 (18)
[Equation 19] J2 = S2 / Y2 (19)
[Expression 20] J3 = S3 / Y3 (20)
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・
[Formula 21] Ji = Si / Yi (21)
As is clear from Equations 18 to 21, lots with smaller values of lot sizes S1, S2, S3,..., Si, and lots with larger values of Y1, Y2, Y3,. The construction order indices J1, J2, J3,..., Ji become smaller. The control unit 12 groups all lots being processed by process, and if necessary, groups by process conditions for each process and sorts the start order index J in ascending order to determine the recommended start lot order and gives priority to production. It is possible to continue production aiming for both the minimum waiting time for all products waiting for the product.

  FIG. 10 is a diagram of an embodiment. Production priority information Y such as the production priority initial number Ys and the production priority update number k is displayed in the middle of the loop of the clock unit start instruction waiting step S10 shown in FIG. Step S09 that enables special setting is added. This is a production management execution support method, program, or procedure for obtaining a start order list in which the start order of a specific product or a specific lot is specially calculated. This means that the production priority initial number Ys and the production priority update number k can be determined for each product or lot, and only the production priority initial number Ys can be set. Only the frequency update number k can be set. Furthermore, both the production priority initial number Ys and the production priority information k can be set for each product and for each lot.

Elapsed time after the lots L1, L2, L3,..., Li and the input of each lot K1, K2, K3,..., Ki and the production priority information Y1, Y2, Y3,. When the relationship with the transition is expressed by an expression, the following expression 22 to expression 26 and FIG. 16 are obtained. Ys and k are different for each lot and are distinguished by subscripts. K1 to Ki may be equal to or different from each other. In short, various values of zero or more are the same as in the description of FIG. In FIG. 16, the lot Li is a case where the production priority update number k is largely changed from kix to kiy according to the instruction of the production line manager after the input time Kix has elapsed.
[Formula 22] Y1 = Ys1 + k1 * (K1 / t) (22)
[Equation 23] Y2 = Ys2 + k2 * (K2 / t) (23)
[Equation 24] Y3 = Ys3 + k3 * (K3 / t) (24)
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[Equation 25]
Yi = Ysi + kix * (Kix / t) + kiy * (Kyy / t) (25)
[Equation 26] Kix + Kiy = Ki (26)
As can be seen from Expression 22 to Expression 26 and FIG. 16, the initial number Ys of production priority is allowed to vary from lot to lot, resulting in a slow difference in production speed at the time of input, and production during production. The production priority update number k representing the slowness of the speed is also allowed to be different between lots, and this is maintained while repeating the incremental update until the end of production for each lot. That is, the production priority information Y1, Y2, Y3,..., Yi is a different number for each lot, and the production priority state expected by the production line manager is reasonably maintained while being increased and updated regularly. It will be.

  16 will be described in more detail. For example, as in the case of the lot L3, the production is allowed to start with the production priority information Ys3 higher than that of the lots L1 and L2 that are input from the beginning to the previous time. Allows the production priority information Y3 to be overtaken by the production priority information Yi of the lot Li input much later than the lot L3. This means that the production line manager can freely control the priority without observing simple first-in first-out production. If the production priority information Y1, Y2, Y3,..., Yi maintained in this way is a large value, the lot is treated as having a high production priority, and is used for calculation of the construction order index J.

  Hereinafter, in order to achieve both the maximization of the sum of customer satisfaction related to the lot size S and the start of construction in order of production priority starting from the largest numerical value of the production priority information Y according to the present invention. The construction order index J can be calculated in the same manner as Equations 18 to 21 above.

  In FIG. 11, for example, before step S09 in the middle of FIG. 10, it is determined whether or not it is necessary to exchange the production priority information Y with a specific lot in step S07. If necessary, lot designation is performed in step S08. It is the figure which added two steps S07 and S08 in total, such as replacing the production priority information Y above. In this way, the construction order between a plurality of specific lots can be easily replaced. For example, even if a quality abnormality occurs, an example of a procedure that is effective for the accelerated production of a recovery lot when it is in time for a predetermined delivery date. It is.

  FIG. 12 is a diagram in which the production priority information Y is advanced to the calculation of the construction order index J in step S4000 after the square calculation in step S3100 after step S3000 in the embodiment of FIG. In this way, the specific gravity of the production priority information Y in the calculation formula of the construction order index J becomes larger than the specific gravity of the lot size S. For example, the production order is determined using the production priority Y as a dominant index. Effective when you want to manage.

When the calculation step S3100 of the production priority information Y is executed under these conditions, the construction index J1, J2, J3,..., Ji is [Expression 27] J1 = S1 / (Y1 * Y1) in the execution stage of step S4000. 27)
[Expression 28] J2 = S2 / (Y2 * Y2) (28)
[Expression 29] J3 = S3 / (Y3 * Y3) (29)
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[Expression 30] Ji = Si / (Yi * Yi) (30)
.., Yi is made larger than the lot size S, and therefore the lot sizes S1, S2, S3 are relatively compared. ,..., It is possible to realize a calculation method having an effect of suppressing the degree of influence of Si to be low.

Similarly, as a result of changing the calculation of step S3100 in the procedure of one embodiment of FIG. 12 to take a square root, the specific gravity of the production priority information Y in the calculation formula of the construction order index J becomes smaller than the specific gravity of the lot size S. The effect can be improved when it is desired to carry out production management in which the start order is determined using the lot size S as a dominant index. When the calculation step S3100 of the production priority information Y is executed under these conditions, the execution order index J1, J2, J3,..., Ji is [Expression 31] J1 = S1 / √ (Y1) in the execution stage of step S4000. (31)
[Expression 32] J2 = S2 / √ (Y2) (32)
[Expression 33] J3 = S3 / √ (Y3) (33)
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[Formula 34] Ji = Si / √ (Yi) (34)
.., Yi is made smaller than the lot size S, and thus the lot sizes S1, S2, S3 are relatively calculated. ,..., A calculation method having an effect of increasing the degree of influence of Si can be realized.

  FIG. 13 shows a procedure for selecting the calculation method for the production priority information Y individually or collectively for a specific product, a specific lot, or all products and all lots in step S06 before step S07 in the embodiment of FIG. As a result of adding, the specific gravity of the production priority information Y in the calculation formula of the construction order index J can be selected individually for each product or lot, whether it is large or small. For example, the production management that determines the construction order can accelerate or slow down production. It is one Example of the procedure which raises an effect when it wants to carry out arbitrarily.

  FIG. 14 shows the actual production required number using the manufacturing capacity database 2, the inventory information database 3 and the order information database information in step S500 after the start instruction waiting step S10 of the midway clock unit 15 of the embodiment of FIG. After calculating the factory operating index R obtained by dividing the total deficiency P by the possible manufacturing capacity Q, which is part of the information in the manufacturing capacity database 2, in step S3100, multiply the factory operating index R or its inverse. As a result of converting the production priority information to the processing order and proceeding to the calculation of the construction order index in step S4000, the specific gravity relationship between the production priority information Y and the lot size S in the computation formula of the construction order index J By changing the operating index R, for example, the factory operating index R can be added to one of the dominant indexes. Painful which is an embodiment of a procedure for raising the effect when.

Assuming that the total number of shortages P of all products, the maximum number of manufacturing capacities is Q, and the factory operation index is R, the calculation of the construction order indices J1, J2, J3,..., Ji is performed in the execution stage of step S4000 [Equation 35] R = P / Q (35)
[Expression 36] J1 = S1 / (Y1 raised to the R-th power) (36)
[Expression 37] J2 = S2 / (Y2 raised to the Rth power) (37)
[Equation 38] J3 = S3 / (Y3 raised to the Rth power) (38)
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[Equation 39] Ji = Si / (Yi raised to the R-th power) (39)
Thus, it is possible to reasonably reflect the busyness of the factory in the calculation of the construction order index J. Here, the factory operation index R is a dimensionless value determined by the relationship between the total shortage number P and the production capacity possible number Q, and it is of course that it is zero or more, and is generally close to 1. is there. Depending on circumstances, the reciprocal number is used instead of R, and the calculation of the construction order indices J1, J2, J3,..., Ji is as follows. (Y1 raised to the (1 / R) power) (40)
[Expression 41] J2 = S2 / (Y2 raised to the (1 / R) power) (41)
[Expression 42] J3 = S3 / (Y3 raised to the (1 / R) power) (42)
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[Expression 43] Ji = Si / (Yi raised to the (1 / R) power) (43)
Can also be used.

  It can be left to the production line manager to select whether the factory operation index R is used as it is for the calculation of the construction order index J or the reciprocal (1 / R) is used for the calculation of the construction order index J.

  FIG. 15 is an example in which the detailed procedure of step S4000 of FIGS. 13 and 14 is expanded and executed. For example, after the procedure up to step S3100 in FIG. 14 is executed, the process proceeds to the procedure shown in FIG. 15, after the start declaration in step S4100, the production capacity information database 2 is read in step S4110, and the batch processing conditions of the batch processing step Get the maximum number of batch processes. Next, for all lots waiting for batch processing in step S4120, the start order index is determined in accordance with the specification of start order index calculation such as selection of lot size S, production priority information Y, factory operation index R, and production priority calculation method. J is calculated. Next, in step S4130, the start of process order calculation is declared for each process, and the process order calculation is started for each process.

  In step S4140, the processing waiting lots are grouped according to processing conditions, and in step S4150, the processing order within the group is determined by rearranging the processing waiting lots in ascending order of the processing order index J. Further, in step S4160, batch assembly lots are collected in the order determined in step S4150 up to the maximum number of processes per batch permitted by the information in the production capacity information database 2 read in step S4110. In the next step S4170, the sum of the batch order lot start index J determined in step S4160 is defined as a batch processing order index V. Hereinafter, in step S4180, the batch processing order index V is set for all processing condition groups in the same process. After determining whether it has been calculated, in step S4200, the batch processing order index V of all the groups is rearranged in ascending order, and in step S4300, a batch group start order list is created.

  Step S4400 described that steps S4130 to S4300 are repeated for all batch processing steps, and finally a batch processing order list is output for each step in step S4900. In batch processing, multiple lots are processed in a batch, but the batch processing order index for the batches processed in batch is not uniform. Since it is not necessarily a reasonable order determination, we decided not to represent the single lot start order index and to introduce the batch start order index V, which is the sum of the start order indices J of all the lots to be started at the same time. This is calculated, and then the batch process order index V is set as the comparison target, and the batch groups are arranged in ascending order, and the procedure is advanced so as to determine the rational order among the groups waiting to start the process.

  One embodiment of the procedure of the present invention will be described in more detail with reference to FIG. For example, as shown in FIG. 1, in the production line, step 1, step 2, and step 3 are batch processing steps, and the respective waiting lots for starting construction are as shown in FIG. That is, the process 1 construction waiting lot group is L1a1, L1a2, L1a3, L1a4, L1a5, L1b1, L1b2, L1b3, L1b4, L1c1, L1c2, L1c3, L1c4, L1c5, L1c6, and L1c7 lots. Are S1a1, S1a2, S1a3, S1a4, S1a5, S1b1, S1b2, S1b3, S1b4, S1c1, S1c2, S1c3, S1c4, S1c5, S1c6, S1c7. L1a1, L1a2, L1a3, L1a4, and L1a5 can be processed in the same batch with the same processing condition A, but the processing conditions are different from L1b1, L1b2, L1b3, L1b4, L1c1, L1c2, L1c3, L1c4, L1c5, L1c6, and L1c7. Therefore, batch can not be assembled, and L1b1, L1b2, L1b3, L1b4 can be processed in the same batch B with the same processing conditions, but the processing conditions are different from L1c1, L1c2, L1c3, L1c4, L1c5, L1c6, L1c7 It cannot be assembled. Hereinafter, there are 16 lots of lots L2d1, L2d2, L2d3, L2d4, L2d5, L2e1, L2e2, L2e3, L2e4, L2f1, L2f2, L2f3, L2f4, L2f5, L2f6, L2f7, and the lot size of each lot is S2 , S2d2, S2d3, S2d4, S2d5, S2e1, S2e2, S2e4, S2e5, S2f1, S2f2, S2f3, S2f4, S2f5, S2f6, S2f7, divided into processing conditions D, E, F, and even in process 3, lot L3g1, 3 There are 16 lots of L3g3, L3g4, L3g5, L3h1, L3h2, L3h3, L3h4, L3m1, L3m2, L3m3, L3m4, L3m5, L3m6, L3m7, and the lot size of each lot is S3g1, S3g2, S3g3, S3g3 g4, S3g5, S3h1, S3h2, S3h3, S3h4, S3m1, S3m2, S3m3, S3m4, S3m5, S3m6, S3m7, which are divided into machining conditions G, H, M and can be processed in the same batch in step 2 and step 3. Whether or not is the same as in step 1. Here, the processing conditions A, B, C in Step 1 and the processing conditions D, E, F in Step 2 and the processing conditions G, H, M in Step 3 are different from each other because the processing contents are different. Is impossible.

  According to the procedure of FIG. 15, first, in step S4110, the batch processing maximum number Smax1, the batch processing maximum number Smax2 of the step 2 and the batch processing maximum number Smax3 of the step 3 are read from the production capacity information database 2. In step S4120, the construction order index J of all lots is calculated. In this embodiment, J1a1, J1a2, J1a3, J1a4, J1a5, J1b1, J1b2, J1b3, J1b4, J1c1, J1c2, J1c3, J1c4, J1c5, J1c J1c7, J2d1, J2d2, J2d3, J2d4, J2d5, J2e1, J2e2, J2e3, J2e4, J2f1, J2f2, J2f3, J2f4, J2f5, J2f6, J2f7, J3g1, J3g2, J3g1, J3g2, J3g1, J3g2 h3, J3h4, J3m1, J3m2, J3m3, J3m4, J3m5, J3m6, to calculate all the J3m7.

  In step S4130, the start of the construction order in step 1 is declared, and in step S4140, the construction order index J is grouped into a group of machining conditions A, a group of machining conditions B, and a group of machining conditions C.

  It is assumed that the construction order index J1a1, J1a2, J1a3, J1a4, and J1a5 is sorted in ascending order and the results are J1a1, J1a2, J1a3, J1a4, and J1a5 in ascending order of numerical values. Similarly, as a result of rearranging the construction order indices of the group with the processing condition B, the numerical order is J1b1, J1b2, J1b3, J1b4, and the construction order indices of the group with the processing condition C are arranged in ascending order. As a result of the change, the detailed description will be continued assuming that the order of the numerical values is J1c1, J1c2, J1c3, J1c4, J1c5, J1c6, and J1c7.

First, for the first batch under the processing condition A, the lot configuration and the batch processing order index V1a1 are examined. The lot order S1a1, S1a2, S1a3, S1a4, and S1a5 in the group of processing conditions A is added to the order of small start order index until the addition result of the batch processing maximum number Smax1 of step 1 does not exceed or becomes equal. When comparing the lot size of the first lot with the maximum batch processing number Smax1,
[Equation 44] S1a1 <Smax1 (44)
At this time, [Expression 45] V1a1 = J1a1 (45)
Compared with the batch processing maximum number Smax1 by adding the next construction order lot L1a2, [Equation 46] S1a1 + S1a2 <Smax1 (46)
At this time [Equation 47] V1a1 = J1a1 + J1a2 (47)
Furthermore, when the next lot order L1a3 is added and compared with the maximum batch processing number Smax1, [Equation 48] S1a1 + S1a2 + S1a3 <Smax1 (48)
At this time, [Formula 49] V1a1 = J1a1 + J1a2 + J1a3 (49)
Further, when the lot L1a4 of the next construction order is added and compared with the maximum batch processing number Smax1, [Equation 50] S1a1 + S1a2 + S1a3 + S1a4> Smax1 (50)
Therefore, the first batch is composed of lots L1a1, L1a2, and LIa3 without adding the lot L1a4 and is in a full batch state. The batch processing order index V1a1 is as shown in Expression 52.

Next, for the second batch under the processing condition A, the lot configuration and the batch processing order index are obtained. The second batch is made up of the remaining lots with processing conditions A. The lot size of the lot L1a4 is smaller than Smax1 as shown in Formula 54.
[Formula 51] S1a4 <Smax1 (51)
At this time, [Formula 52] V1a2 = J1a4 (52)
Compared with the batch processing maximum number Smax1 condition by adding the next start order lot L1a5, [Equation 53] S1a4 + S1a5 <Smax1 (53)
At this time [Formula 54] V1a2 = J1a4 + J1a5 (54)
Here, unlike the first batch, if the second batch is not in a full batch state and there is a lot waiting to be started, it can be added. However, since there is no lot waiting to start under the processing condition B, the batch processing order index V1a2 can be added. Becomes the formula 54.
With the above procedure, V1a1 = J1a1 + J1a2 + J1a3 and V1a2 = J1a4 + J1a5 are obtained.

Next, regarding the first batch under the processing condition B, the lot configuration and the batch processing order index V1b1 are examined. The lot size S1b1, S1b2, S1b3, S1b4 in the group of processing conditions B is added to the order of smaller start order index until the result of addition of the batch processing maximum number Smax1 of step 1 does not exceed or becomes equal. When comparing the lot size of the first lot with the maximum batch processing number Smax1,
[Expression 55] S1b1 <Smax1 (55)
At this time [Equation 56] V1b1 = J1b1 (56)
Compared with the batch processing maximum number Smax1 by adding the lot L1b2 of the next construction order, [Equation 57] S1b1 + S1b2 <Smax1 (57)
At this time [Formula 58] V1b1 = J1b1 + J1b2 (58)
Further, when the lot L1b3 of the next work order is added and compared with the maximum batch processing number Smax1, [Expression 59] S1b1 + S1b2 + S1b3> Smax1 (59)
Therefore, without adding the lot L1b3, the first batch is composed of lots LIb1 and L1b2 and is in a full batch state. The batch processing order index V1b1 is as shown in Formula 61.

Next, for the second batch under the processing condition B, the lot configuration and the batch processing order index are obtained. The second batch is composed of the remaining lots with the processing conditions B. The lot size of the lot L1b3 is smaller than Smax1 as shown in Expression 63.
[Expression 60] S1b3 <Smax1 (60)
At this time, [Equation 61] V1b2 = J1b3 (61)
Compared with the batch processing maximum number Smax1 condition by adding the next start order lot L1b4, [Expression 62] S1b3 + S1b4 <Smax1 (62)
At this time [Equation 63] V1b2 = J1b3 + J1b4 (63)
Here, unlike the first batch, if the second batch is not in a full batch state and there is a lot waiting to be started, it can be added. However, since there is no lot waiting to start under the processing condition B, the batch processing order index V1b2 Remains as in Equation 66.
With the above procedure, V1b1 = J1b1 + J1b2 and V1b2 = J1b3 + J1b4 are obtained.

  The processing condition C group will also be described in detail assuming that the batch processing order index V1c1 = J1c1 + J1c2 + J1c3 + J1c4 and the batch processing order index V1c2 = J1c5 + J1c6 + J1c7 are obtained as in the processing conditions A and B.

  The above V1a1, V1a2, V1b1, V1b2, V1c1, and V1c2 are obtained by being executed in the repetition loop from step S4150 to step S4180.

  Since the calculation of the batch processing order indices V1a1, V1a2, V1b1, V1b2, V1c1, and V1c2 of all conditions in the process 1 waiting for start in step S4180 is completed, the batch processing order indices of the batches in the full batch state in step S4200 Compare In the above example, since the first batch is in the full batch state and the second batch is in the non-full batch state, first, V1a1, V1b1, and V1c1 in the full batch state are compared, and the construction starts in ascending order of the values. Then, V1a2, V1b2, and V1c2 in the non-full batch state are compared and rearranged in ascending order to obtain the batch start order.

Specifically, for example,
[Formula 64]
V1a1 <V1c1 <V1b1, and V1c2 <V1b2 <V1a2 (64)
In the process A, the batch start order currently recommended in the process A is the first rank; the batch combination of the lots L1a1, L1a2 and L1a3 of the processing conditions A; the second rank; the lots L1c1, L1c2, L1c3 and L1c4 of the processing conditions C Batch combination 3rd rank; Batch combination of lots L1b1 and L1b2 with processing condition B Fourth rank; Batch combination of lots L1c5, L1c6 and L1c7 with processing condition C 5th rank; Batch combination of lots L1b3 and L1b4 with processing condition B 6 ranks; As a batch set of lots L1a4 and L1a5 under the processing condition A, a list is created in step S4300.

The construction order will be described again using a modified example. Assume that there are a plurality of waiting lots for processing conditions P and Q, and the batch is assembled. In the case of the processing condition P, batches P1, P2, and P3 are made, and P1 and P2 are in a full batch state and P3 is in a non-full batch state. In the case of the processing condition Q, batches Q1 and Q2 are made, only Q1 is in a full batch state, and Q2 is in a non-full batch state. In this case, the batch processing order indexes V1p1, V1p2, and V1q1 of the three batches P1, P2, and Q1 in the full batch state are compared, and the construction starts in ascending order of the values. Further, the batch processing indexes V1p3 and V1q2 of the two batches P3 and Q2 in the non-full batch state are compared, and the construction starts in ascending order of the values. For example, if V1q1 <V1p1 <V1p2 and V1p3 <V1q2,
First rank; Batch Q1 of processing condition E
2nd rank; Batch P1 of processing condition D
3rd rank; Batch P2 of processing condition D
4th rank; Batch P3 of processing condition D
5th rank; Batch Q2 of processing condition E
The construction will start in the order.

  Thereafter, the procedure is sequentially advanced, and in step S4400 to step S4490, a batch start order list recommended at the present time of step 2 and step 3 is created by the same procedure as step 1.

  Although the present invention has been described with reference to FIGS. 8, 10, 11, 12, 13, 14, and 15, the example of the sub-procedure in which the new lot generation step S2000 in FIG. 8 is developed in more detail. 5, sub-procedure example in which production priority information Y update step S3000 in FIG. 8 is expanded in more detail FIG. 6, sub-procedure example in which construction order determination step S4000 in FIG. 8 is expanded in more detail in FIG. General Procedure Example FIG. 4 is a sub-procedure example in which the new lot generation step S2000 in FIG. 9 is developed in more detail.

  FIG. 5 is a diagram for explaining an example of a sub-procedure for generating a new input lot corresponding to step S2000 in FIG. 8. In step S2010, new production lot arrangement data is read, and in step S2020, the production capacity information database unit 2 reads it. The past yield information by product and the lot size composition number information by product are read to prepare for the creation of a new lot. In the following, lot development by product will begin.

  In step S2030, the number of manufacturing arrangements for each product is read. In step S2040, the number of additional productions is calculated by calculating the number of manufacturing arrangements and the yield. In step S2050, the number of additional productions and the number of lots to be newly input are calculated by calculating the product-specific lot size information. In step S2060, lots corresponding to the number of new inputs calculated in step S2050 are newly generated. In step S2070, lot numbers are assigned to the new input lots. It has the same character as a general production management method that is considered not to be confused with other lots in the long-term history, so-called single, single and unique. In step S2075, each lot is given a production priority initial number Ys that is 1 or more indefinitely determined by the production manager for each product, and the production priority information Y keeps monotonically increasing as production progresses. The above production priority update number k is also given. In this way, lot information relating to the newly input lot is generated from step S2030 to step S2075, and this lot information is stored in the inventory information database unit 3 in step S2080.

  Steps S2030 to S2075 are monitored in step S2090 until execution is completed for all products. After the generation of new lots for all products is completed, a list of newly input lots is output in step S2100, and subprocedure step S2000 is completed.

  FIG. 6 is a diagram for explaining an example of a sub procedure for updating the production priority information Y corresponding to step S3000 in FIG. For one of the lots in the process, the current production priority information Y of the lot is read from the inventory information database unit 3 in step S3010, and the lot production priority update number k is read from the inventory information database unit 3 in step S3020. Then, the updated production priority is switched so as to be a value obtained by adding the production priority information Y read in step S3010 and the production priority update number k read in step S3020, and in step S3040, the inventory information database 3 is stored.

  The above steps S3010 to S3040 are monitored in step S3050 until execution is completed for all lots, and the update subprocedure step S2000 for production priority information Y for all lots is completed. The order of reading in step S3010 may be the ascending order, the descending order of the lot numbers, the order of generation date and time, or any other order, but it is a matter of course that the sub-procedure S3000 is limited to being performed only once.

  FIG. 7 is a diagram for explaining an example of a sub-procedure for creating a construction order list corresponding to step S4000 in FIG. In step S4010, the production priority information Y of all lots in the process is read from the inventory information database unit 3, and in step S4020, the lot size information S of all lots is read from the inventory information database unit 3 as well. The index J is calculated in step S4030 as follows. The construction order index J is the value obtained by dividing the lot size information S read in step S4020 by the production priority information Y read in step S4010. This construction order index J is temporarily stored in the inventory information database 3 in step S4040. To do.

  Steps S4030 to S4040 are monitored in step S4050 until execution is completed for all lots, and after completion of calculation of the start order index J, in step S4060, the start order index J for all lots and the stay process information waiting for start are displayed. Reading from the inventory information database 3, the construction order index J is grouped by staying process in step S4070, the construction order index J is compared and sorted in ascending order for each process in step S4080, and the construction order index within the group The start order determination sub-procedure step S4000 is completed by completing the ascending order of the start order index J for all the processes so that the order is determined so that the lot having the minimum value J is the first start lot in the process. Complete.

  Each of the above procedures can be stored in the main storage device 13 of FIG. 2 as a program and operated by the control unit 12. The program can be stored in a recording medium represented by a CD or a DVD and stored / moved.

  As described above, one embodiment of the present invention has been described in detail. As can be easily estimated, the lot size referred to in the present invention corresponds to the quantity, weight, capacity represented by the number, the number, etc., and is the same in the same process. Of course, using physical dimensions.

On the other hand, in products such as semiconductor devices in which differences in function and performance greatly affect the inspection time of electrical characteristics, it is often the case that the relationship between the quantity constituting the lot size and the lot inspection total time differs. In this case, the lot size S used in the above description is obtained by using, for example, the inspection time x of one semiconductor device and the lot configuration number y, for example, [Equation 65] x × y = S (65)
A reasonable construction order index can be obtained by substituting with the product of x and y.

DESCRIPTION OF SYMBOLS 1 Product information database part 2 Production capacity information database part 3 Inventory management database part 4 Input / output part 5 Communication part 6, 7 Print output part and display output part 8 of production management computer system Process terminal part 9 Communication line part 10 Sales management computer Order information input / output unit 11 of system Order information database 12 Control unit 13 of production management computer system Main storage device 14 of production management computer system External storage device 15 of production management computer system Clock unit 17 Communication unit 18 of sales management computer system, 19, 20, 21, communication part a of production line process terminal 1 cycle size time required for 1 unit size production determined in each process b total time of setup time before and after construction in each process and post-processing time F (Si) lot Production time function for lots of size Si Number of lots explaining the relationship between size and total production time J Start order index K, K1, K2, K3, Ki, Kix Elapsed time from the time of lot introduction Kiy Elapsed time k after changing the production priority update number of lot Li , K1, k2, k3, ki, production priority update numbers L1, L2, L3, Li, lot numbers L1a1, L1a2, L1a3, L1a4, L1a5, L1b1, L1b2, L1b3, L1b4, L1c1, L1c2, L1c3, L1c4 L1c5, L1c6, L1c7, L2d1, L2d2, L2d3, L2d4, L2d5, L2e1, L2e2, L2e3, L2e4, L2f1, L2f2, L2f3, L2f4, L2f5, L2f3, L2f3, L2f3, L2f3 L3h2, L3h3, L3h4, L3 1, L3m2, L3m3, L3m4, L3m5, L3m6, L3m7 Lot number P1, P2, P3, Q1, Q2 Batch number S, S1, S2, S3, Si, Lot size information S1a1, S1a2, S1a3, S1a4, S1a5, S1b , S1b2, S1b3, S1b4, S1c1, S1c2, S1c3, S1c4, S1c5, S1c6, S1c7, S2d1, S2d2, S2d3, S2d4, S2d5, S2e1, S2e2, S2e4, S2e5, S2e5 , S2f7, S3g1, S3g2, S3g3, S3g4, S3g5, S3h1, S3h2, S3h3, S3h4, S3m1, S3m2, S3m3, S3m4, S3m5, S3m6, S3m7 Lot size information Y, Y1, Y2 Y3, Yi, Production priority information Ys, Ys1, Ys2, Ys3, Ysi Production priority initial number P Insufficient total number Q Production capacity maximum number R Factory operation index V, V1a1, V1a2, V1b1, V1b2, V1c1, V1c2, V1d1 , V1d2, V1d3, V1e1, V1e2 Batch processing order index T, T1, T2, T3, Ti Process production time information TWi Lot waiting time of customer waiting for lot Li ΣTWSx, ΣTWSy Total waiting time for all customers ΣTD Total waiting time for all customers Difference t production priority update cycle time

Claims (33)

Production management execution in a mixed flow production process for producing multiple products, with each production lot having production priority information Y determined from the production priority initial number Ys and production priority update number k. A support method,
Setting an initial value to the production priority initial number Ys of each lot prior to processing of each lot;
A step of adding the production priority update number k of each lot for each predetermined time during processing;
Updating the production priority information Y of each lot from the initial production priority number Ys and the production priority update number k;
Storing the updated production priority information Y;
Dividing the lot size S of each lot at a predetermined time by the updated production priority information Y, and creating a construction order index;
Storing the construction order index;
A step of comparing the size of the construction order index for each lot;
Rearranging the construction order of each lot according to the result of the size comparison;
A production management execution support method that recommends a construction order with   The production plan execution support method according to claim 1, wherein the production priority update number is different for each product.   The production plan execution support method according to claim 1, wherein the initial number of production priorities is different for each product.   2. The production plan execution according to claim 1, wherein the initial production priority number and the production priority update number are different for each product, and further includes a step of changing the production priority update number during production. Support method.   2. The method according to claim 1, further comprising a step for transferring the production priority information between different lots, wherein the production priority information can be transferred to another lot of the same product. 5. The production plan execution support method according to any one of 4 above.   The production management according to any one of claims 1 to 5, wherein the construction order index calculating step calculates a construction order index after converting the production priority information into a square of the production priority information. Execution support method.   The production management according to any one of claims 1 to 5, wherein the construction order index calculating step calculates a construction order index after converting the production priority information into a square root number of the production priority information. Execution support method.   The production management execution support method according to claim 1, wherein the construction order index calculation step can be selected from a plurality of steps.   The construction order index is calculated after the production priority information is converted by using the factory operation degree index calculated from the maximum production capacity number and the required production number as a multiplier. 9. The production management execution support method according to any one of items 1 to 8.   The step of comparing the batch work order index in the batch processing process where the processing conditions of products and lots are not necessarily the same is the step of calculating the lot size with priority information for each lot of the same processing conditions, the step of obtaining the sum for each batch, 10. The method according to claim 1, further comprising a step of comparing sums of calculation results for each batch that can be started, a step of creating a batch order in ascending order of a sum value, and a step of outputting the created batch order. The production management execution support method according to the item.   The step of comparing the sum of the calculation results for each batch that can be started is performed by comparing the batches in the full batch state, setting the batch order in the order of the smaller total value, and then comparing the batches in the non-full batch state. 11. The production management execution support method according to claim 10, wherein the batch order is set in ascending order of values, and a batch in a full batch state is started with priority over a batch in a non-full batch state. In a production management execution support program that performs production plan execution in a mixed flow production process that produces multiple products by giving production priority information to the lot to be produced,
It has a procedure to configure the production priority information of each lot with the production priority initial number and the production priority update number,
The production priority information is a dimensionless initial number of production priorities that is 1 or more at the time of processing input of a lot.
When in the middle of processing, all lots have a procedure for adding the production priority update number that is dimensionless and 1 or more for each predetermined time and a procedure for storing the addition result,
A procedure for creating a construction order index by dividing the lot size of each lot by the updated production priority information every predetermined time;
A production management execution support program having a procedure for creating and outputting a reasonable start order by comparing the start order index for each lot.   The production management execution support program according to claim 12, wherein the production priority update number is different for each product.   The production management execution support program according to claim 12, wherein the initial number of production priorities is different for each product.   The production management execution support program according to claim 12, wherein the production priority update number and the production priority initial number are different numbers for each product, and further includes a procedure for changing the production priority update number during production. .   Further, the production priority information and the production priority update number have a procedure for passing between different lots, and the production priority information can be delivered to another lot of the same product. The production management execution support program according to any one of claims 12 to 15.   The production management execution support program according to any one of claims 12 to 16, wherein the construction order index calculation procedure is performed after the production priority information is converted into a square of the production priority information. .   The production management execution support program according to any one of claims 12 to 16, wherein the construction order index calculation procedure is performed after the production priority information is converted into a square root number of the production priority information. .   The production management execution support program according to any one of claims 12 to 18, wherein the construction order index calculation procedure can be selected from a plurality of procedures.   A procedure for calculating the factory operation degree index from the production capacity information database information and the sales order information database, and a procedure for calculating the construction order index after the procedure for converting the production priority information using the factory operation degree index as a multiplier. 20. The production management execution support program according to any one of claims 12 to 19, wherein:   Comparison of batch processing order indices in batch processing processes where the processing conditions of products and lots are not necessarily the same is the procedure for calculating the lot size for each lot with the same processing conditions using the production priority information, and then the procedure for obtaining the sum, 21. The method according to any one of claims 12 to 20, further comprising: a step of obtaining a sum of operation results for each batch, a step of comparing the sums, and a step of preferentially recommending a batch having a condition that the sum value is a minimum value. The production management execution support program described in 1.   The step of comparing the sum of the calculation results for each batch that can be started is performed by comparing the batches in the full batch state, setting the batch order in the order of the smaller total value, and then comparing the batches in the non-full batch state. The production management execution support program according to claim 21, wherein a batch order is set in ascending order of values, and a batch in a full batch state starts with priority over a batch in a non-full batch state. A production management execution support device that consists of a production management system device, a sales management system device, and a production line system device, which produces a plurality of products in a plurality of processes,
The production management system device includes an external storage device that stores a product information database, a production capacity information database, and an inventory information database; a control unit that performs an operation based on the database and controls the entire production management system; A main storage device for storing the results obtained by the above, a clock unit for providing time information, an output unit for outputting the calculation results, an input / output unit for inputting information to the database or instructing output of information, It consists of a communication unit that sends and receives information,
The sales management system device includes an order information input / output unit for inputting order information from a customer, an order information database for storing the order information, and a communication unit for receiving and transmitting information.
The production line system device is a device for each process of the production line, a process terminal unit connected to the device to give manufacturing instructions to the device and grasp the operating status of the device, and transmission and reception of information. A communication unit that performs
A production management execution support device, wherein the communication units of the production management system device, the sales management system device, and the production line system device are connected to a communication line unit to transmit / receive information to / from each other. A production management execution support system for producing a plurality of products in a plurality of processes, comprising a production management system, a sales management system, and a production line system,
The production management system includes an external storage device that stores a product information database, a production capacity information database, and an inventory information database; a control unit that performs an operation based on the database and controls the entire production management system; A main storage device for storing the results obtained by the above, a clock unit for providing time information, an output unit for outputting the calculation results, an input / output unit for inputting information to the database or instructing output of information, It consists of a communication unit that sends and receives information,
The sales management system is composed of an order information input / output unit that inputs order information from a customer, an order information database that stores the order information, and a communication unit that receives and transmits information.
The production line system includes an apparatus for each process of the production line, a process terminal unit connected to the apparatus to give a manufacturing instruction to the apparatus and grasping an operating state of the apparatus, and a communication unit for receiving and transmitting information. And consists of
A production management execution support system, wherein communication units of the production management system, the sales management system, and the production line system are connected to a communication line unit to transmit / receive information to / from each other.   A step of setting a production priority initial number and a production priority update number in which the production priority information for each lot is dimensionless and 1 or more for each lot, and the production priority update as well as the production priority initial number The number is a step that can be selected by setting a quantity that is not related to each other. The production priority information is a step that sets the initial number of production priority as an initial value at the time of processing a lot. Adding a production priority update number that has a limit that the numerical value is zero or more every predetermined time, reading and storing production priority information set or updated as described above, and every predetermined time Dividing the lot size of each lot by the updated production priority information to create a construction order index, storing the construction order index, A step of comparing the size of the construction order index for each work, a step of rearranging the lots having the smallest value as a result of the magnitude comparison to give the highest priority, a step of outputting rearranged construction lot order information, A computer-readable recording medium in which a program for executing the program is recorded.   26. A program for executing the step of changing one or both of an initial production priority number and a production priority update number constituting the production priority information during production is additionally recorded. The computer-readable recording medium as described.   27. The computer-readable recording medium according to claim 25 or 26, further comprising a program for executing a step for transferring the production priority information between different lots.   28. The program according to any one of claims 25 to 27, wherein a program for executing a step of converting the production priority information into a square of the production priority information in the process of calculating the construction order index is additionally recorded. A computer-readable recording medium according to claim 1.   28. The program for executing the step of converting the production priority information into the square root number of the production priority information in the process of calculating the construction order index is additionally recorded. The computer-readable recording medium according to any one of the above.   31. The computer-readable medium according to claim 25, wherein the construction order index calculating step additionally records a program for executing a step of enabling selection from among a plurality of steps. Possible recording media.   In the process of calculating the start order index, a program is added to execute the step of calculating from the maximum number of manufacturing capacities of the factory and the required number of manufacturing, and the step of converting the production priority information using the factory operation index as a multiplier. The computer-readable recording medium according to any one of claims 25 to 30, wherein the recording medium is recorded.   In order to compare the batch processing order index, the step of calculating the lot size with priority information for each lot under the same processing conditions, the step of obtaining the total for each batch, and the total of the calculation results for each batch that can be started A batch processing process in which the processing conditions of products and lots are not necessarily the same by additionally recording a program for executing a step, a step of creating a batch order in the order of smaller total value, and a step of outputting the created batch order 32. A computer-readable recording medium according to any one of claims 25 to 31.   The step of comparing the sum of the calculation results for each batch that can be started is performed by comparing the batches in the full batch state, setting the batch order in the order of the smaller total value, and then comparing the batches in the non-full batch state. 33. The computer-readable recording medium according to claim 32, wherein a batch order is set in ascending order of values, and a batch in a full batch state is started in preference to a batch in a non-full batch state.

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