JP2023023088A - Production planning device, production planning method and program - Google Patents

Abstract

To create, for one production procedure, an appropriate production plan with the presence of a plurality of candidate production facilities being taken into consideration.SOLUTION: A production planning device 100 includes: a production plan information creating unit which calculates respective beginning dates at which, for respective objects, a plurality of production procedures are begun, the respective beginning dates meeting the respective delivery deadlines for the respective objects, and which creates production plan information representing the production procedure to be executed by the plurality of production facilities for each unit of time period on the basis of the calculated beginning date; a determining unit that determines, for each unit of time period, whether the production procedure for each production facility identified by the production plan information is executable or not; a production procedure re-allocating unit which decides, on the basis of a predefined rule, which one of the plurality of production facilities allocated to the unit of time period determined that the production procedure is not executable is to be allocated to the other production facility, and which allocates the decided production procedure to the other production facility capable of executing such a production procedure so as to update the production plan information; and an output unit that outputs a production plan which is the production plan information updated by the production procedure re-allocating unit.SELECTED DRAWING: Figure 1

Description

The present disclosure relates to a production planning device, a production planning method, and a program.

2. Description of the Related Art In the manufacturing industry, a production planning system has been proposed that distributes a plurality of processing steps for processing a product to a plurality of processing facilities and creates a production plan for the entire production line. For example, Patent Literature 1 discloses a preset processing process allocation rule that allocates processing processes to processing equipment, a scheduling rule that determines the start date for starting a processing process, and a processing priority rule that determines the priority of products to be manufactured. A production planning apparatus is disclosed that creates a production plan by allocating parts to be manufactured to processing equipment according to the above.

International Publication No. 2012-026056

In this production planning apparatus, one machining process and one machining facility are determined in advance, and the case where a plurality of machining facility candidates exist for one machining process is not taken into consideration. Therefore, when the load concentrates on a specific processing facility, there is a problem that the entire processing period is lengthened. Note that the same problem is not limited to the process of creating a production plan for the manufacturing process of processing a product, but is common to the process of creating a production plan for general production processes of producing a product.

The present disclosure has been made in view of the above circumstances, and is a production planning apparatus that creates an appropriate production plan in consideration of the existence of a plurality of production equipment candidates for one production process. The purpose is to provide planning methods and programs.

In order to achieve the above object, the production planning apparatus according to the present disclosure performs a plurality of production processes for producing a plurality of ordered objects for each predetermined unit period. A production planning device that creates a production plan to be assigned to a production facility, calculates start dates for starting a plurality of production processes for each object, and complies with the delivery date of each object, and based on the calculated start date , a production plan information creation unit that creates production plan information indicating production processes to be performed by a plurality of production equipment for each unit period; A judging unit that makes judgments for each period, and based on a predetermined rule, which of the plurality of production processes assigned to the unit period in which the production process is judged to be impracticable by the judging unit is assigned to another production facility and assigning the determined production process to other production equipment that can carry out the production process, thereby updating the production plan information; and the production plan information updated by the production process reallocation part. as a production plan.

According to the present disclosure, when it is determined that the production plan information that adheres to the delivery date does not satisfy a predetermined condition, based on a predetermined rule, assign any of the plurality of production processes to other production equipment a production process reallocation unit that determines whether Therefore, it is possible to create an appropriate production plan in consideration of the existence of a plurality of production equipment candidates for one production process.

Block diagram showing the functional configuration of the production planning device according to the present embodiment A diagram showing an example of order information stored in an order information storage unit shown in FIG. FIG. 2 is a diagram showing an example of component information stored in the component information storage unit shown in FIG. 1; FIG. 2 is a diagram showing an example of a machining process table stored in a parts machining process storage unit shown in FIG. 1; A diagram showing an example of processable work information for each facility stored in the processable work storage unit for each facility shown in FIG. A diagram showing an example of an operable table stored in the equipment processing capacity storage unit shown in FIG. FIG. 2 is a diagram showing an example of an NC program table stored in the NC program storage unit shown in FIG. 1; A diagram showing an example of allocation rules stored in the allocation rule storage unit shown in FIG. A diagram showing an example of a machining period table stored in the machining period storage unit shown in FIG. 1 is a block diagram showing an example of a physical configuration of a production planning device according to an embodiment; FIG. Flowchart showing production planning processing by the production planning device according to the embodiment A diagram showing an example of a recommended production planning table created by the recommended start date allocation section shown in FIG. A diagram for explaining the process of comparing the production capacity and production load of the processing equipment by the start date determination processing unit shown in FIG. A diagram for explaining the process by which the start date determination processing unit shown in FIG. 1 allocates the machining process to the alternative machining equipment

A production planning apparatus, a production planning method, and a program according to embodiments of the present disclosure will be described below with reference to the drawings. Identical or corresponding parts in the drawings are denoted by the same reference numerals.

A production planning apparatus according to the present embodiment is an apparatus that creates a production plan for parts in a factory that manufactures a plurality of parts that form a product through a plurality of processing steps. A factory has a plurality of processing equipment candidates for one processing step. The production planning device creates a production plan by allocating parts to be produced and machining processes to be carried out to the machining equipment owned by the factory on a daily basis. First, based on the order details, the production planning device calculates the recommended start date for each processing process of each part, which is recommended to comply with the delivery date of the product. Create the allocated recommended production planning table. The production planning device determines whether or not there is a processing facility whose production load, which is the total value of processing times for performing the allocated processing steps, exceeds the production capacity in the created recommended production planning table. The production planning device calculates the priority of allocated parts based on a predetermined rule in a processing facility whose production load exceeds its production capacity. The production planning device repeats the process of allocating the machining process to other machining equipment based on the calculated priority of the parts, and creates a production plan in which the production load of all the machining equipment is equal to or less than the production capacity.

Next, the configuration of the production planning apparatus according to this embodiment will be described.
As shown in FIG. 1, the production planning apparatus 100 includes a storage unit 110 that stores various data and an execution unit 120 that executes processing for creating a production plan.

The storage unit 110 includes an order information storage unit 111 that stores order information indicating the details of the order, a component parts information storage unit 112 that stores component part information that indicates information on the parts that make up the product, and a component parts information storage unit 112 that stores information on the parts that make up the product. A parts machining process storage unit 113 that shows a machining process table showing the machining process and machining equipment that is recommended to perform each machining process, and machine-by-equipment machineable work information that shows machining processes that can be performed by each machining equipment. A machineable work storage unit 114 for each facility, a facility machining capacity storage unit 115 that stores an operable table showing the daily operable time of each machining facility, and an NC program table that shows a list of NC programs that have been created in advance. An NC program storage unit 116 for storing, an allocation rule storage unit 117 indicating rules used when allocating parts to be produced to machining equipment, and a machining schedule storage unit 118 for storing a machining schedule table indicating the schedule for each machining process. And prepare.

The received order information storage unit 111 stores received order information indicating the contents of orders, that is, received orders. As exemplified in FIG. 2, the order information includes an "order number" that uniquely identifies each order, an "order date" that indicates the date the order was received, and an example of identification information for the ordered product. A certain "ordered product name", "ordered quantity" indicating the order quantity of the product, "delivery date" indicating the delivery date of the product, and "express designation" indicating whether or not the order is for the shortest delivery date constitute the product. It includes information of "expected completion date of part manufacturing completion" indicating the expected date of completion of the production of all the parts to be manufactured, and "preliminary time" indicating the expected number of days to complete the production of the parts ahead of the expected completion date of part manufacture. In the illustrated example, the content of the order with the order number "MI100001" has the order date "April 1, 2021". The product name of the ordered product is "Product A", the number of orders received is 1, the delivery date of the product is "April 30, 2021", the express designation is "yes", and the parts have been manufactured. This indicates that the scheduled date for the event is "April 23, 2021" and the spare time is "7 days."

Returning to FIG. 1, the component part information storage unit 112 stores component part information indicating information on parts that constitute a product. As exemplified in FIG. 3, the component part information includes a "product name" that is an example of information identifying a product, a "part name" that is an example of information identifying a part that constitutes each product, and the number of parts. and "number" indicating the number of In the illustrated example, the product whose product name is "product A" includes a part whose part name is "part a", a part whose part name is "part b", and a part whose part name is "part c". Assembled from parts, the number of "part a" is "1", the number of "part b" is "1", and the number of "part c" is "1". A product with a product name of "product B" is assembled from a part with a part name of "part a", a part with a part name of "part d", and a part with a part name of "part e". , the number of "part a" is "2", the number of "part d" is "1", and the number of "part e" is "3".

Returning to FIG. 1, the parts machining process storage unit 113 stores a machining process table showing machining processes for producing parts. As exemplified in FIG. 4, the machining process table includes a "part name" which is an example of information identifying a part, a "machining code" indicating information identifying a machining process for producing each part, and a machining process. Contains information on "recommended processing equipment", which indicates information identifying processing equipment that is recommended for use when implementing. The "processing code" stores information identifying the processing steps from the left in the order of the steps. In the illustrated example, a part whose part name is "part a" is a part produced by three machining processes, the machining code of the first machining process is "X40", and the second is "X40". This indicates that the processing code of the last processing step is "XX8" and the processing code of the last processing step is "040". Furthermore, the recommended equipment for the processing process with the processing code "X40" is "XXX-128", the recommended equipment for the processing process with the processing code "XX8" is "XXX-40", and the processing code is " 040” indicates that the recommended equipment for the processing step is “XXX-40”. As shown in the figure, when multiple machining processes are performed in parallel, multiple machining processes are stored in "machining process", and the recommended equipment name for each machining process is stored in "recommended machining equipment". Stored. The machining process table is an example of production process information in the scope of claims.

Returning to FIG. 1, the per-equipment processable work storage unit 114 stores per-equipment processable work information indicating processing equipment owned by a factory and processing processes that can be performed by each processing equipment. As exemplified in FIG. 5, the machine-by-equipment processable work information includes a "factory name" that is an example of information identifying a factory that is a production base, and a "facilities "name" and "processing code" indicating information identifying the processing steps that can be performed by each processing facility. In the illustrated example, the factory whose factory name is "machine factory 1" has equipment names of "XX-66", "XX-252", "XXX-257", "XXX-128", and "XXX-40". . . . It indicates that you have processing equipment for The processing facility with the facility name of "XX-66" is capable of executing the processing steps with the processing codes of "220", "XX2", and "XX7".

Returning to FIG. 1, the equipment processing capability storage unit 115 stores an operable table indicating daily operable hours in the processing equipment. As exemplified in FIG. 6, the operable table includes "equipment name" which is an example of information identifying processing equipment, and "equipment number" which uniquely identifies each processing equipment among the processing equipment of the same type. , and “date” indicating the operable time of each processing equipment for each day. "Date" stores the operable hours for the day shift and the night shift, respectively. The operable time is set by the user in consideration of the target operation rate of each facility, the number of personnel, and the like. In the illustrated example, the processing facility whose facility name is "XX-66" and whose facility number is "1" has an available operating time of 7.75 hours during the day shift on April 14, and The available hours for the day and night shift are 5 hours, the available hours for the day shift on April 15 are 9.75 hours, and the available hours for the night shift on April 15 are 7 hours. . . , indicates that Note that the operable table is an example of production capacity information in the scope of claims.

Returning to FIG. 1, the NC program storage unit 116 stores an NC program table showing a list of NC programs created in advance. As exemplified in FIG. 7, the NC program table includes "NC program name" which is an example of identification information for the NC program, "part name" which indicates information for identifying a part, and "information for identifying a processing facility". "equipment name" and "processing code" indicating information for identifying the processing process. In the illustrated example, an NC program with an NC program name of "NC0001" is a program for producing a part with a part name of "part a" and a machining program with an "equipment name" of "XXX-40". Indicates that the program controls the execution of a machining process whose target is equipment and whose machining code is "X40". The NC program table is an example of the control data correspondence information in the claims, the NC program is an example of the control data in the claims, and the NC program name is the control data identification information in the claims. The equipment name is an example of production equipment identification information, and the part name is an example of object identification information.

Returning to FIG. 1, the allocation rule storage unit 117 stores allocation rules indicating the conditions for allocating the machining processes of the parts ordered by the start date determination processing unit 123 to the machining equipment. As exemplified in FIG. 8, the allocation rules consist of "No." indicating information identifying each allocation rule, "Rule" indicating the content of each allocation rule, and "Priority" indicating the priority of each allocation rule. and have In the illustrated example, the content of the allocation rule whose "No." is "1" is "customer's express is specified", indicating that the highest priority is "1". Note that the allocation rule is an example of a priority allocation rule in the scope of claims.

The machining period storage unit 118 stores a machining period table indicating the period for each machining step. As exemplified in FIG. 9, the processing period table includes a "processing code" indicating information for identifying a processing process, a "processing period" indicating the time required to perform each processing step in units of days, and the time required for each processing step. and a "processing time" indicating in hours. In the illustrated example, the machining process with the machining code "X40" indicates that the work period is "1 day" and the machining time is "5 hours". It should be noted that the "work period" and "machining time" are the time required to carry out each machining step, regardless of the number of parts to be machined. The processing period table is an example of production process time information in the scope of claims.

Returning to FIG. 1, the execution unit 120 calculates the start date for each machining process of each part recommended to comply with the delivery date of the product, and assigns the parts to be produced and the machining process to be executed to each machining facility. A date allocation unit 121, a facility capacity reading unit 122 that reads an operable table showing the production capacity that is the daily operable time of the processing equipment, and the start date of the machining process of each part calculated by the recommended start date allocation unit 121 and a start date determination processing result output unit 124 for outputting the production plan based on the start date determined by the start date determination processing unit 123.

The recommended start date allocation unit 121 calculates the start date for each machining process of each part that is recommended in order to comply with the delivery date of the product, and executes the process of allocating the parts to be produced and the machining process to be executed to each machining equipment. . Specifically, the recommended start date assigning unit 121 identifies the machining process required for manufacturing the part and the recommended machining equipment recommended for this machining process from the machining process table shown in FIG. The specified processing period for each manufacturing process is acquired from the shown processing period table, and the recommended start date, which is the start date for observing the delivery date, is calculated. Based on the calculated recommended start date, the recommended start date allocation unit 121 creates a recommended production plan table shown in FIG. 12 in which the machining processes to be executed by each machining equipment and target parts are allocated by date. In the illustrated example, the processing facility with the facility name "XXX-40" has the processing process with the processing code "040" for the product a with the order number MI100001 and the order number indicates that the processing process with the processing code "040" for the product b with the order number MI100001 and the processing process with the processing code "040" for the product c with the order number MI100001 are allocated. . The recommended start date allocation unit 121 is an example of the production planning information creating unit in the claims, and the recommended production planning table is an example of the production planning information in the claims.

The facility capacity reading unit 122 reads from the facility processing capacity storage unit 115 an operable table indicating the production capacity, which is the daily operable time of the processing facility. Specifically, the equipment capacity reading unit 122 reads the operable table shown in FIG. 6, adds up the operable hours of the day shift and the night shift of the target processing equipment for each day, and calculates the total value for each day of each processing equipment. is sent to the start date determination processing unit 123 as the production capacity. In the illustrated example, when obtaining the production capacity on April 14th of the processing facility with the facility name "XX-66" and the facility number "1", the facility capacity reading unit 122 "7.75 hours", which is the operable time, and "5 hours", which is the operable time of the night shift on April 14, are added to calculate "12.75 hours" as the production capacity.

Returning to FIG. 1 , the start date determination processing unit 123 determines the start date of the machining process for each component calculated by the recommended start date allocation unit 121 . Specifically, the start date determination processing unit 123 reads the recommended production planning table shown in FIG. to extract Based on the allocation rule shown in FIG. 8, the start date determination processing unit 123 calculates the priority of each target part of the machining process allocated to the day when the production load exceeds the production capacity. The start date determination processing unit 123 allocates the calculated process of the component with low priority to the alternative processing facility, and updates the recommended production planning table. The start date determination processing unit 123 reads the updated recommended production planning table and determines whether or not there is a processing facility whose production load exceeds the production capacity. The start date determination processing unit 123 repeats updating of the recommended production planning table until the production load of each processing facility becomes equal to or less than the production capacity in all schedules. When the start date determination processing unit 123 determines that the production load of each processing equipment is less than the production capacity in all schedules, the recommended start for each processing process of each part set in the recommended production planning table at this time Confirm the date as the start date. The start date determination processing unit 123 is an example of a determination unit and a production process reallocation unit in the scope of claims.

Returning to FIG. 1, the start date determination processing result output unit 124 outputs the production plan created based on the start date determined by the start date determination processing unit 123 to a display device that visualizes and displays the information. It should be noted that the start date determination processing result output unit 124 is an example of an output unit in the scope of claims.

The production planning apparatus 100 having the functional configuration described above physically includes a CPU (Central Processing Unit) 11 that executes processing according to a program, and a RAM (Random Memory) that is a volatile memory, as shown in FIG. 12, a ROM (Read Only Memory) 13 which is a non-volatile memory, a storage unit 14 for storing data, an input unit 15 for accepting input of information, and a display unit 16 for visualizing and displaying information. , which are connected via an internal bus 99 .

The CPU 11 executes various processes by reading programs stored in the storage unit 14 to the RAM 12 and executing them. The CPU 11 executes each process by a recommended starting date allocation unit 121, an equipment capacity reading unit 122, a starting date determination processing unit 123, and a start date determination processing result output unit 124 as main functions provided by the program.

RAM 12 is used as a work area for CPU 11 . The ROM 13 stores control programs executed by the CPU 11 for basic operations of the production planning apparatus 100, BIOS (Basic Input Output System), and the like.

The storage unit 14 includes a hard disk drive, stores programs executed by the CPU 11, and stores various data used when executing the programs. The storage unit 14 includes an order information storage unit 111, a component parts information storage unit 112, a parts machining process storage unit 113, a machineable work storage unit 114 for each facility, an equipment machining capacity storage unit 115, an NC program storage unit 116, and an allocation rule storage unit. It functions as a part 117 and a machining period storage part 118 .

The input unit 15 is a user interface including a keyboard, mouse, communication device, and the like. The display unit 16 is a display device such as a liquid crystal display or an organic EL (Electro Luminescence) display that visualizes and displays information.

Next, operations of the production planning apparatus 100 will be described with reference to FIG. The production planning apparatus 100 executes a production planning process for creating a production plan by allocating parts to be produced and machining processes to be carried out to the machining facilities owned by the factory on a daily basis. When the production planning device 100 receives the order information from the customer, the production planning device 100 receives the "order date" indicating the date when the order was received, the "ordered product name" indicating the identification information of the ordered product, and the "ordered product name" indicating the order quantity of the product. "quantity", "delivery date" indicating the delivery date of the product, "express designation" indicating that it is an order with the shortest delivery date, "scheduled completion date of part manufacturing completion" indicating the scheduled completion date of part manufacturing, and part manufacturing By inputting the information of the "preliminary time" indicating the number of days to complete the manufacturing of the parts ahead of schedule from the scheduled completion date, the order information shown in FIG. A date seven days before the product's "delivery date", which is preset by the user, is automatically entered in the "expected date of completion of part manufacturing". Further, in the "preliminary time", "7 days" preset by the user is input as the scheduled number of days to complete the manufacture of the parts ahead of the scheduled completion date of the manufacture of the parts. It should be noted that the "scheduled date of completion of part manufacturing" does not have to be a date seven days before the "delivery date", and is arbitrary. In addition, the "preliminary time" is not limited to seven days, and any number of days may be set.

Further, in the storage unit 110 of the production planning apparatus 100, component part information including information on parts forming the product shown in FIG. 3 and processing information for producing the parts shown in FIG. A machining process table containing information on processes and machining equipment that recommends execution of each machining process, information on machining processes that can be performed by each machining equipment shown in FIG. Including an operable table containing information on the daily operable time of each machining equipment shown, an NC program table containing a list of NC programs created in advance shown in FIG. 7, and a work period of each machining process shown in FIG. A machining period table is set in advance.

When the user operates the input unit 15 of the production planning device 100 to request the start of production planning processing, the production planning device 100 starts processing.

The recommended start date assigning unit 121 reads unprocessed order information from the order information storage unit 111 (step S101). Specifically, the recommended start date assigning unit 121 reads each unprocessed order information shown in FIG. , "number of orders received", "delivery date", "designated express", "scheduled completion date of part manufacturing", and "preparation time".

Returning to FIG. 11, next, the recommended start date allocation unit 121 identifies all the parts that constitute each product whose production plan is undecided (step S102). Specifically, the recommended start date assigning unit 121 acquires part name information from the component part information shown in FIG. 3 using the product name included in the unprocessed order information shown in FIG. 2 as a key. 2, the recommended start date assigning unit 121 uses the product name "product A" as a key, and uses the component information of FIG. a”, “part b”, and “part c”. The recommended start date assigning unit 121 selects other ordered products included in the order information, namely product B, product C, . . . , each component is specified by the same processing.

Returning to FIG. 11, next, the recommended start date assigning unit 121 specifies information on the machining process of each part specified in step S102 and the machining equipment recommended for carrying out each machining process (step S103). . Specifically, first, the recommended start date assigning unit 121 uses the part name of the part acquired in step S102 as a key, and extracts the information of "machining code" and "recommended machining equipment" from the machining process table shown in FIG. get. In the illustrated example of "part a", the recommended start date allocation unit 121 sets the processing code of the first processing step to be "X40" and the processing code of the next processing step to be "XX8". The processing step information indicating that the processing code of the processing step to be executed last is "040" is obtained. Furthermore, the recommended start date allocation unit 121 determines that the recommended processing equipment for the processing process with the processing code "X40" is "XXX-128", and the recommended processing equipment for the processing process with the processing code "XX8" is "XXX-128". -40” and the recommended processing equipment for the processing step with the processing code of “040” is acquired as information indicating that “XXX-40”.

Returning to FIG. 11, next, the recommended start date assigning unit 121 executes processing for determining a recommended start date, which is a scheduled date for starting each processing step, which is recommended in order to comply with the delivery date of the ordered product ( step S104). Specifically, first, the recommended start date allocation unit 121 acquires the work period of the manufacturing process acquired in step S103 from the work period table shown in FIG. 9 . Next, the recommended start date assigning unit 121 completes manufacturing of each part ahead of the scheduled completion date of component manufacturing based on the "expected date for completion of manufacturing of parts" and "preparation time" included in the order information shown in FIG. The target production date of the parts, which is the target date, is calculated, and the recommended start dates are respectively determined in order to complete all the machining processes of each part on the target production date of the parts. In the example of part a shown in FIG. 4, the recommended start date allocation unit 121 selects the processing period of "1 day", "1 day", Acquire information for "2 days" and "1 day". Next, the recommended start date assigning unit 121 acquires the scheduled completion date of parts manufacturing completion “2021/4/23” and the preliminary time “7 days” for “product A” from the order information shown in FIG. Subtracting the spare time "7 days" from the expected completion date "2021/4/23" of "2021/4/23", the parts manufacturing target date "2021/4/16" is calculated. Next, the recommended start date assigning unit 121 determines that the manufacturing process for the last machining process "040" is "1 day", so the recommended start date for the machining process "040" is the part manufacturing target date. It is determined to be "2021/4/16" when the processing process of "040" is completed on "2021/4/16". Next, since the manufacturing process of "XX8", which is the preceding process of "040", is "2 days", the recommended start date of the processing process "XX8" is the recommended start date of the subsequent process "040". Determine that it is "2021/4/14" which completes "XX8" on the day before "2021/4/16". Next, since the manufacturing process of "X40", which is the preceding process of "XX8", is "1 day", the recommended start date of the processing process "X40" is the recommended start date of the subsequent process "XX8". Determine that it is '2021/4/13' to complete 'X40' on the day before '2021/4/14'. 9 indicates the number of days required to carry out each machining process regardless of the number of parts. b, c, and other ordered products, product B, product C, . . . By the same processing for each part, the recommended start date of each processing process is determined, and the implementation date of each processing process for each part shown in FIG. A production planning table is created and stored in the storage unit 110 . Note that when a recommended production plan table based on past order contents is stored in the storage unit 110, the recommended start date allocation unit 121 adds a new date to each date in the recommended production plan table stored in the storage unit 110 Add each processing process for each part of the ordered product to , and update the recommended production planning table.

Returning to FIG. 11, next, the facility capacity reading unit 122 reads the operable table shown in FIG. 6, and obtains the operable time indicating the daily production capacity of each processing facility (step S105). Specifically, the equipment capacity reading unit 122 sums up the operable hours of the day shift and the night shift for each date in the recommended production planning table created in step S104, and calculates the total value for each processing equipment. The daily production capacity is transmitted to the start date determination processing unit 123 . In the illustrated example, when obtaining the production capacity on April 16th of the processing facility with the facility name "XXX-40" and the facility number "1", the facility capacity reading unit 122 "7.75 hours", which is the available working time, and "5 hours", which is the available working time for the night shift on April 16, are added to calculate "12.75 hours" as the production capacity.

Returning to FIG. 11, next, the start date determination processing unit 123 calculates the production load, which is the total value of the daily processing time of each processing equipment, based on the recommended production planning table created in step S104 (step S106 ). Specifically, the start date determination processing unit 123 acquires the processing code of the processing process assigned to each processing equipment from the recommended production planning table shown in FIG. Get the machining time of The start date determination processing unit 123 adds the acquired processing time to calculate the production load.

Returning to FIG. 11, next, the start date determination processing unit 123 compares the production capacity of the processing facility acquired in step S105 and the production load calculated in step S106 for each processing facility, and determines that the production capacity is less than the production load. It is determined whether or not there is such processing equipment (step S107). Specifically, as shown in FIG. 13, the start date determination processing unit 123 compares the production capacity with the total machining time of the allocated machining process, and determines whether the production capacity is less than the production load. judge. When the start date determination processing unit 123 determines that there is no processing equipment whose production capacity is less than the production load (step S107; No), the recommended start date determined in the recommended production planning table shown in FIG. 12 is set as the start date. Confirm (step S108) and terminate the process. In this case, the start date determination processing result output unit 124 outputs the recommended production planning table created by the recommended start date allocation unit 121 as a production plan.

Returning to step S107, when the start date determination processing unit 123 determines that there is a processing facility whose production capacity is less than the production load (step S107; Yes), it is assigned to the processing facility determined to have a production capacity less than the production load. The priority of the parts to be machined in the machining process is determined based on the allocation rule shown in FIG. 8 (step S109). Specifically, in the example illustrated in FIG. 13, since the production capacity of the processing equipment with the equipment names "XXX-40", "XXX-252", and "XXX-128" is less than the production load, the start date The determination processing unit 123 determines the priority of the orders assigned to each processing equipment.

Priority of "part a" with order number "MI100001", "part a" with order number "MI100002", and "part b" with order number "MI100003" assigned to processing equipment "XXX-40" , the start date determination processing unit 123 reads the allocation rules shown in FIG. 8 in descending order of priority, and determines the priority of each order. First, in the allocation rule with the highest priority, "customer express designation", the start date determination processing unit 123 acquires the item "express designation" from the order information shown in FIG. The priority of "part b" of order number "MI100003" is determined to be lower than that of "part a" of order number "MI100001" and "part a" of "MI100002", both of which have express designation. Next, in the second highest priority allocation rule "early delivery date", the start date determination processing unit 123 acquires the item "delivery date" from the order information shown in FIG. Since the delivery date of "MI100002" is earlier than that of "Part a" of "MI100001", it is determined that the priority of "Part a" of "MI100001" is higher than that of "Part a" of "MI100002". As a result, the start date determination processing unit 123 determines the priority of each part as follows: "part a" of "MI100001">"part a" of "MI100002">"part b" of "MI100003". The start date determination processing unit 123 determines the priority of each part allocated to the other processing facilities "XXX-252" and "XXX-128" by similar processing.

Returning to FIG. 11, the start date determination processing unit 123 determines whether or not there is an alternative processing facility to reassign the machining process of the allocated parts in order to reduce the production load of the processing facility to the production capacity or less (step S110). . Specifically, in the example of "XXX-40" in FIG. 13, the start date determination processing unit 123 determines the lowest priority "MI100003 ” will be allocated to other processing equipment. Next, the start date determination processing unit 123 searches for a processing facility capable of executing the processing code "XX7" of "MI100003" from the facility-by-equipment processable work information shown in FIG. 5, and assigns it to "XX-252". decide. Note that if there are a plurality of processing facilities that can be executed, the processing codes may be allocated in ascending order of the processing code number.

Returning to FIG. 11, when the start date determination processing unit 123 determines that there is an alternative machining facility to reassign the order (step S110; Yes), the NC program that controls the machining process of the order to be assigned to this alternative machining facility is It is determined whether or not it has been created (step S111). Specifically, the start date determination processing unit 123 refers to the NC program table shown in FIG. 7, and controls the machining process of the machining code "XX7" of the part name "part b" by the alternative machining equipment "XX-252". Determine the presence or absence of the NC program. Note that the starting date confirmation processing unit 123 is an example of a control data determination unit in the scope of claims.

Returning to FIG. 11, when the start date determination processing unit 123 determines that the NC program for controlling the machining process of the order to be assigned to the alternative machining facility has been created (step S111; Yes), the alternative machining facility "XX-252 ”, the machining process “XX7” of “MI100003” with the lowest priority is assigned (step S112), and the process returns to step S106. After that, the start date determination processing unit 123 calculates the production load of the processing equipment based on the newly allocated order.

Returning to step S110, when the start date determination processing unit 123 determines that there is no alternative processing facility to reassign the order (step S110; No), it changes the recommended start date of the low priority order to the next day (step S113), and notifies the recommended start date allocation unit 121. Specifically, in the example of "XXX-40" in FIG. The recommended start date allocation unit 121 is notified of the change to the next day. Next, returning to step S104, the recommended start date allocation unit 121 creates a new recommended production planning table in which the recommended start date of the machining process "XX7" of "MI100003" is changed to the next day (step S104).

Returning to step S111, when the start date determination processing unit 123 determines that the NC program for controlling the machining process of the order to be assigned to the alternative machining equipment has not been created (step S111; No), it recommends an order with a low priority. The start date is changed to the next day (step S113), and the recommended start date assigning unit 121 is notified.

As shown in FIG. 14, the production planning device 100 repeatedly executes the processes of steps S104 to S107 and steps S109 to S113 until the production loads of all the processing facilities become equal to or less than the production capacity. The start date determination process result output unit 124 outputs the recommended production plan table for which the start date determination process unit 123 has determined that there is no processing facility whose production capacity is less than the production load as a production plan.

As described above, when the production load of the processing facility exceeds the production capacity, the production planning device 100 determines the priority of each order of the allocated processing steps, and substitutes the processing steps of the orders with lower priority. Assign to equipment. The production planning device 100 creates a production plan by repeating the process until the production load of all processing facilities is equal to or less than the production capacity. As a result, the production load can be distributed among a plurality of processing facilities, and an appropriate production plan can be created.

As long as the gist of the present disclosure is not deviated from, the configurations described in the above embodiments can be selected or changed as appropriate to other configurations.

In the above-described embodiments, the parts constituting the product are exemplified as the target object, but the product can be of any type, such as substance, material, raw material, energy, food, and the like. The storage unit 110 may store order information including information that can identify each object according to the type of the object.

In the above embodiment, the production planning apparatus 100 creates daily production plans as unit periods for creating production plans. A period may be used. The recommended start date assigning unit 121 creates a recommended production plan table for each unit period, such as by work band or by work band. , the production load can be calculated.

In the above embodiment, when the start date determination processing unit 123 determines that the NC program for controlling the machining process of the order to be allocated to the alternative machining equipment has not been created (step S111; No), the low priority order Although the recommended start date was changed to the next day, it is not limited to this. When the start date determination processing unit 123 determines that the NC program for controlling the machining process of the order to be assigned to the alternative machining equipment has not been created, a warning message to the effect that the NC program has not been created is displayed on the display unit 16. display, assign the machining step of the order with the lowest priority to the alternative machining equipment, and perform the process of returning to step S106.

Also, the allocation rules stored in the allocation rule storage unit 117 are not limited to those illustrated in FIG. For example, an allocation rule may be included, such as preferentially allocating processing equipment with a small production load or preferentially allocating a processing process with a large interval from the previous process. Also, the priority of allocation rules may be set arbitrarily.

In step S104 of the above-described embodiment, the recommended start date allocation unit 121 uses a backward method in which the machining process is allocated by calculating backward from the parts manufacturing target date of the parts delivery date. A forward method may be used in which the machining processes are assigned from left to right. Also, different allocation methods may be used depending on the contents of the order, for example, the forward method is used for allocating the processing steps of the specified express order products, and the backward method is used for allocating the processing steps of the normal order products.

The "work period" and "machining time" included in the machining work period table shown in FIG. 9 are the time required to perform each machining process regardless of the number of parts to be machined, but are not limited to this. , 1 part, 1 dozen, or any other unit of time required to produce parts. When calculating the recommended start date for each machining process in step S104, the "work period" included in the machining lead time table is multiplied by the number of parts to obtain the lead time for each machining process, and the recommended start date is calculated based on the calculated lead time. do it. In addition, in the process of calculating the production load in step S106, the "machining time" included in the machining period table may be integrated by the number of parts to calculate the production load of each machining process.

In the above embodiment, names are used as information for identifying products, parts, production equipment, and NC programs, but they may be identified by arbitrary identification information such as codes and symbols.

Information stored in the storage unit 110 may be centrally managed by a cloud server existing on a network, and the execution unit 120 may access the cloud server as necessary to read and write information. In this case, the production planning device 100 does not have to include the storage section 110 .

Moreover, the production planning device 100 can be realized using a normal computer system without depending on a dedicated device. For example, a program for realizing each function in the production planning apparatus 100 is stored in a computer-readable recording medium such as a CD-ROM (Compact Disc Read Only Memory) or a DVD-ROM (Digital Versatile Disc Read Only Memory). By distributing the program as a program and installing the program on the computer, a computer capable of realizing each of the functions described above may be configured.

Further, when each function is shared between an OS (Operating System) and an application, or when the OS and an application cooperate with each other, only the application may be stored in the recording medium.

100 production planning device, 110 storage unit, 111 order information storage unit, 112 component part information storage unit, 113 parts machining process storage unit, 114 machineable work storage unit for each facility, 115 facility machining capacity storage unit, 116 NC program storage unit 117 allocation rule storage unit 118 processing period storage unit 120 execution unit 121 recommended start date assignment unit 122 facility capacity reading unit 123 start date confirmation processing unit 124 start date confirmation processing result output unit 99 internal bus, 11 CPU, 12 RAM, 13 RAM, 14 storage section, 15 input section, 16 display section.

Claims (8)

A production planning device that creates a production plan that assigns each of a plurality of production processes for producing a plurality of ordered objects to a plurality of production facilities that perform the production process for each predetermined unit period,
Complying with the delivery date of each of the objects, calculating start dates for starting the plurality of production processes for each of the objects, and performing the production by the plurality of production facilities for each unit period based on the calculated start dates a production planning information creation unit that creates production planning information indicating the production process to be performed;
a determination unit that determines, for each unit period, whether or not the production process for each production facility specified by the production plan information can be performed;
Based on a predetermined rule, it is determined which of the plurality of production processes assigned to the unit period in which the production process is determined to be impracticable by the determination unit to be assigned to other production equipment, and the determined production a production process reallocation unit that updates the production plan information by allocating a process to other production equipment capable of executing the production process;
an output unit that outputs the production plan information updated by the production process reallocation unit as the production plan;
A production planning device with The production process reassignment unit prioritizes the target objects of each of the plurality of production processes assigned to the unit period determined to be impracticable by the determination unit based on a preset priority allocation rule. and determining the production process to be assigned to the other production equipment according to the calculated priority of the target object.
The production planning device according to claim 1. The determination unit determines the production load, which is the total time required to perform each production process assigned to each of the plurality of production equipment, based on production process time information indicating the time required to perform each production process. Production for each production facility specified by the production plan information when the production capacity calculated for each unit period and indicating the operable time for each of the plurality of production facilities for each unit period is less than the calculated production load determine that the process is inoperable;
The production planning device according to claim 2. The production process reassignment unit determines whether or not the other production facility exists, based on facility-by-facility executable process information indicating production processes that can be carried out by each of the plurality of production facilities, and determines whether the other production facility exists. If it is determined that the production facility exists, assign the production process decided to be assigned to the other production facility,
The production planning device according to claim 2 or 3. Control data identifying a plurality of control data for controlling the operation of the production process for producing the object for each production facility when the production process reallocation unit determines that the other production facility exists. Based on control data association information indicating correspondence between identification information, production equipment identification information for identifying the production equipment, and object identification information for identifying the object, the production of the other production equipment further comprising a control data determination unit that determines whether control data for controlling the operation of the production process determined to be allocated by the process reallocation unit has been created;
When the control data determination unit determines that the control data has not been created, the production process reallocation unit assigns the production process determined to be allocated to the other production facility to the production process that can be executed. Allocate to a production facility that is different from other production facilities,
The production planning device according to claim 4. Order information including order details for each of the objects; production process information indicating a plurality of production processes for producing the objects and production equipment recommended to implement each of the production processes; further comprising a storage unit for storing production process time information indicating time,
The production planning information creation unit
Identifying the ordered object and the number of orders for the object from the order information,
Based on the identification information of the identified object and the production process information, each of a plurality of production processes necessary for producing the object and a production facility recommended to perform the plurality of production processes are specified,
From the production process time information, the time required for carrying out each of the specified production processes is acquired, and based on the acquired time required for carrying out each production process, the start date of each of the production processes is calculated. ,
creating the production plan information by assigning the specified production process to each specified production facility based on the calculated start date;
The production planning device according to any one of claims 1 to 5. Production executed by a production planning device that creates a production plan that allocates each of a plurality of production processes for producing a plurality of ordered objects to a plurality of production facilities that carry out the production process for each predetermined unit period A planning method comprising:
Complying with the delivery date of the object, calculating start dates for starting the plurality of production processes for each of the objects, and creating production plan information based on the calculated start dates;
a step of determining whether or not the production process for each production facility specified by the production plan information can be carried out for each unit period;
Based on a predetermined rule, it is determined which of the plurality of production processes assigned to the unit period in which the production process is determined to be impracticable to be assigned to another production facility, and the determined production process is assigned to the relevant production facility. updating the production plan information by assigning production processes to other production equipment that can be carried out;
A production planning method comprising: outputting updated production planning information as the production plan. A computer, which is a production planning device that creates a production plan that allocates each of a plurality of production processes for producing a plurality of ordered objects to a plurality of production facilities that carry out the production process for each predetermined unit period,
a process of calculating start dates for starting the plurality of production processes for each of the objects while complying with the delivery dates of the objects, and creating production plan information based on the calculated start dates;
a process of determining whether or not the production process for each production facility specified by the production plan information can be performed for each unit period;
Based on a predetermined rule, it is determined which of the plurality of production processes assigned to the unit period in which the production process is determined to be impracticable to be assigned to another production facility, and the determined production process is assigned to the relevant production facility. a process of updating the production plan information by allocating production processes to other production equipment that can be executed;
A program for executing a process of outputting the updated production plan information as the production plan.

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