JP7052827B2 - Placement planning device, placement planning method and program - Google Patents

Description

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

Conventionally, a technique for planning the allocation of workers for a plurality of work processes constituting a production process has been known.

For example, Patent Document 1 describes that the production time of the entire production process can be shortened by allocating a worker who works faster from a plurality of workers in the work process.

Japanese Unexamined Patent Publication No. 2006-3095777

In Patent Document 1, only the skill of the worker "work is fast" is considered, and the skill of other workers is not considered at all. For example, when a worker having a high rate of impairing work (defective rate) is assigned to a work process, the rate of defective products that are regarded as rejected products as a result of inspection increases. When a defective product is generated, the labor cost and material cost required for the production of the defective product become the defective product. Therefore, even if only workers who have the skill of "working fast" are assigned to the work process, the scrap cost may be a factor to push up the production cost, and as a result, the productivity may be lowered.

The present invention has been made to solve the above-mentioned problems, and even if a worker fails to work in a work process and a defective product is generated, a plurality of inventions can be used so as to suppress an increase in production cost. The purpose is to plan the placement of workers in the work process.

The layout planning device according to the present disclosure plans the allocation of workers to a plurality of work processes constituting the production line for producing products, and acquires work process information including material costs of items consumed in the work of the work process. Work process information acquisition department, worker information acquisition department that acquires worker information including worker labor cost and scrap rate, and material cost and labor cost for each combination of work process and worker The scrap cost calculation unit that calculates the scrap cost weighted by using the scrap rate, and the work process so that the total value of the scrap cost is suppressed as a whole of the plurality of work processes constituting the production line. It is characterized by including a layout plan generation unit that generates a layout plan for workers.

The layout planning device according to the present disclosure plans the allocation of workers to a plurality of work processes so that even if the workers fail to work in the work process and a defective product is generated, the increase in production cost can be suppressed. It has the effect of being able to do it.

It is a schematic block diagram which shows the structure of the information processing system 1 to which the arrangement planning apparatus 100 which concerns on this embodiment is applied. It is a block diagram which conceptually illustrates the structure of the arrangement planning apparatus 100. It is a figure which shows the relation of each table stored in the storage part. It is a figure which shows an example of the production line master TB1. It is a figure which shows an example of a production plan TB2. It is a figure which shows an example of the worker master TB3. It is a figure which shows an example of the worker skill TB4. It is a figure which shows an example of the attendance schedule TB5. It is a figure which shows an example of the process which can be in charge TB6. It is a figure which shows an example of the item master TB7. It is a figure which shows the relationship of the parts necessary for producing a product. It is a figure which shows an example of the intermediate item TB8. It is a figure which shows the hardware composition of the arrangement planning apparatus 1. It is a flowchart which shows the arrangement plan processing.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the following description and drawings of the embodiments, those having the same reference numerals indicate the same parts or corresponding parts.
1. 1. Embodiment *** Explanation of configuration ***

FIG. 1 is a schematic block diagram showing a configuration of an information processing system 1 to which the arrangement planning device 100 according to the present embodiment is applied.
The information processing system 1 includes an arrangement planning device 100, a collecting device 200, and a production line 300.

A production process for producing a product is associated with the production line 300. Further, a plurality of work processes SK1 to SKN constituting the production process are associated with the production line 300 in order from the upstream side. Further, the workers SS1 to SSN are arranged corresponding to the work processes SK1 to SKN. The specific product produced on the production line 300 is arbitrary, and examples thereof include home appliances, automobiles, furniture, and food. In the work process, a work of producing an intermediate product from a plurality of members (parts or materials) or a work of producing a product from a plurality of intermediate products is assigned in advance. In the following description, when it is not necessary to separately explain the members, intermediate products, and products, they are simply referred to as "items". In addition, "production" includes assembly and / or processing of each item.

The collecting device 200 collects information (skill information) indicating the skills of the workers arranged in the work process. The skill information includes an "average work time" from the start to the end of the work of the work process, and a "skill rate" indicating the rate at which the worker fails the work of the work process. Further, the skill information may include "cumulative work time" indicating the cumulative time in which the worker has performed the work of the work process. The collecting device 200 is configured by using an input device such as a sensor, an image pickup device, a keyboard, or a mouse for detecting the movement of a worker during work. The collecting device 200 is connected to the communication unit 107 of the arrangement planning device 100 via a network.

By the way, in general, the production cost is calculated from the sum of three items, "material cost", "labor cost" and "expense". "Material cost" includes the cost of the parts that make up the product. In addition, "labor costs" include wages paid to workers involved in the production of products. In addition, "expense" includes costs that are not classified as material costs and labor costs. When a worker fails to work and a defective product is generated, the "labor cost" and "material cost" required for the production of the defective product become the "defective cost", which causes the production cost to be pushed up.

The layout planning device 100 of the present disclosure plans the allocation of workers to a plurality of work processes so that even if the workers fail to work in the work process and a defective product is generated, the increase in production cost can be suppressed. do. In the following description, the total value of the material costs of the items consumed in the work of the work process is referred to as "material cost". Further, a value calculated for each combination of a work process and a worker, and a labor cost generated by the worker performing the work of the work process is referred to as a “labor cost”. Further, a value acquired for each combination of the work process and the worker, and the probability that the worker fails the work of the work process is referred to as a "scrap rate". Further, a value weighted by using the "scrap rate" for the "material cost" and the "labor cost" is referred to as a "scrap cost".

FIG. 2 is a block diagram conceptually illustrating the configuration of the arrangement planning device 100.
As shown in the figure, the arrangement planning device 100 includes a reception unit 160, a worker information acquisition unit 110, a work process information acquisition unit 120, a scrap cost calculation unit 130, an arrangement plan generation unit 140, an output unit 150, and a storage unit. A unit 104 is provided. The layout planning device 100 does not have to include the storage unit 104 as long as the worker information and the work process information can be acquired via the network or the like. In this case, the storage unit 104 may exist on the cloud server.

The storage unit 104 stores information required for each process in the arrangement planning device 100. The storage unit 104 stores the production line master TB1, the production plan TB2, the item master TB7, the intermediate product TB8, the worker master TB3, the worker skill TB4, the attendance schedule TB5, and the process TB6 that can be in charge. Information on items produced in the work process (hereinafter referred to as work process information) is registered in the production line master TB1, the production plan TB2, the item master TB7, and the intermediate product TB8. In addition, information about the worker assigned to the work process (hereinafter referred to as worker information) is registered in the worker master TB3, the worker skill TB4, the attendance schedule TB5, and the process that can be in charge TB6. ..

FIG. 3 is a diagram showing the relation of each table stored in the storage unit 104. The <PK> described in the data item of each table indicates a primary key. The primary key indicates a data item for uniquely identifying data (row, record) in one table. Further, when a plurality of primary keys are set in one table, each combination of the plurality of primary keys serves as one primary key. Then, by using the data items common to the plurality of tables as the concatenation key and joining the plurality of tables, the target item data can be specified. Specifically, the arrangement planning device 100 joins the respective tables using the item code of the production plan TB2 and the item code of the item master TB7 as the concatenation key, so that the data items such as the item name, the material cost, or the attribute can be combined. Can be identified.

-About the production line master TB1 FIG. 4 is a diagram showing an example of the production line master TB1.
Information indicating the production line and the work process associated with the production line is registered in the production line master TB1.
The production line master TB1 has a "production line code" for identifying a production line, a "production line name", a "work process code" for identifying each of a plurality of work processes associated with the production line, and a "work process". "First name" is included as a data item.

-About the production plan TB2 FIG. 5 is a diagram showing an example of the production plan TB2.
In the production plan TB2, information on the items to be produced and their quantities is registered for each work process associated with the production line. For example, in FIG. 5, it is shown that the item of ITEM005 is produced in the work process of KOTEI002 on the production line of LINE001.
The production plan TB2 has a "production number" for managing production, an "item code" for identifying items to be produced, a "production line code" for identifying production lines to be produced, and a "work process code" for identifying work processes to be produced. , "Production quantity" indicating the quantity of the item to be produced, and "Production date" indicating the date of production are included as data items.

-Registration of production plan TB2 For example, the supervisor formulates a daily production plan (production date, item, production quantity) based on the medium schedule plan (production plan for one month) and registers it in the production plan TB2. .. Further, for example, the arrangement planning device 100 registers the production plan based on the information taken in from the order receiving system or the like.

-About the worker master TB3 FIG. 6 is a diagram showing an example of the worker master TB3.
In the worker master TB3, the labor cost of the worker who is planned to be assigned to the work process is registered. The worker master TB3 uses "worker code" and "worker name" for identifying the worker, and "labor cost" indicating the labor cost per unit period (for example, one hour) of the worker as data items. include.

-Registration of the worker master TB3 For example, the person in charge of the personnel department registers the labor cost (for example, hourly wage) of each worker in the worker master TB3. Further, for example, the arrangement planning device 100 registers the information fetched from the personnel system or the like in the worker master TB3.

-About the worker skill TB4 FIG. 7 is a diagram showing an example of the worker skill TB4.
In the worker skill TB4, information indicating the skill of the worker is registered for each work process. In the worker skill TB4, the worker identifies the worker, the "worker code", the production line, the work process code, and the work assigned to the work process. The data items include the "average work time" from the start to the end and the "scratch rate" indicating the probability that the worker will fail the work assigned to the work process.

-Registration of worker skill TB4 For example, the supervisor calculates the average working time based on the daily report (when, what, how long) recorded by the worker and registers it in the worker skill table. In addition, the supervisor calculates the defect rate from the number of defective products per number of works based on the daily defect report (when, in which process, what caused the defect) recorded by the worker, and the worker skill. Register with TB4. Further, for example, the arrangement planning device 100 registers the skill information of the worker collected by the collecting device 200 in the worker skill TB4.

-Regarding the attendance schedule TB5 FIG. 8 is a diagram showing an example of the attendance schedule TB5.
The work day of the worker is registered in the work schedule TB5. The attendance schedule TB5 includes the "worker code" and the "attendance date" as data items.

-Registration of attendance schedule TB5 For example, a worker submits a shift table for the next period (next half month) in a predetermined period (every half month). Then, the site supervisor or the system administrator registers the worker's attendance schedule in the attendance schedule TB5 based on the submitted shift table. Further, for example, the arrangement planning device 100 registers the attendance schedule of the worker taken in from the personnel system or the like in the attendance schedule TB5.

-Regarding the process TB6 that can be in charge FIG. 9 is a diagram showing an example of the process TB6 that can be in charge.
Information indicating the work process that the worker can be in charge of is registered in the process that can be in charge TB6. The process TB6 that can be in charge includes a "worker code", a "production line code", and a "work process code" as data items.

-Registration of the process TB6 that can be in charge For example, the supervisor identifies the work skill of each worker and registers the work process that can be in charge in the process TB6 that can be in charge. Further, for example, in the arrangement planning device 100, the worker can use the arrangement planning device 100 based on the comparison result between the skill information (defective rate, average work time, cumulative work time) of the worker collected by the collection device 200 and a predetermined set value. The work process that can be in charge may be specified, and the specified work process may be registered in the work process that can be in charge TB6.

-About the item master TB7 FIG. 10 is a diagram showing an example of the item master TB7.
Information on the item and the material cost of the item is registered in the item master TB7. The item master TB7 includes "item code" and "item name" for identifying the item, "material cost" indicating the cost of the item, "attribute" of the item, and "upper item code" as data items. In the item master TB7 of FIG. 10, for example, it is shown that the material cost of the item (plastic) of ITEM007 is 100. "Attribute" indicates the state of an item such as a finished product, an intermediate product, or a member. The “upper item code” will be described with reference to FIG.

FIG. 11 is a diagram showing the relationship between items used in the production of products.
FIG. 11 shows the state of each item in the production process hierarchically. Specifically, FIG. 11 shows that the items downstream of the production process (that is, the items at the upper level of FIG. 10) are in the upper row. It is shown that the washing machine (ITEM001), which is a finished product in the uppermost stage, is produced by using the outer frame (ITEM003) and the drum (ITEM004), which are intermediate products in the second stage. Further, it is shown that the outer frame (ITEM003), which is an intermediate product of the second stage, is produced by using the colorless outer frame (ITEM005) and the paint (ITEM006), which are the members of the third stage. Therefore, in the item master TB7 of FIG. 10, a washing machine (ITEM001) is registered as a higher item code of the outer frame (ITEM003) and the drum (ITEM004), which are intermediate products of the second stage, and the member of the third stage is used. The outer frame (ITEM003) is registered as a higher item code of a certain colorless outer frame (ITEM005) and paint (ITEM006).

-Registration of item master TB7 For example, the person in charge of the material department registers the material cost of each member in the item master TB7. Further, for example, the person in charge of the design department registers the BOM (BILL OF MATERIAL) information (product, intermediate product, member) of each product in the item master TB7. Then, the arrangement planning device 100 generates a list of items used for the production of the product from the BOM information. Then, the arrangement planning device 100 registers the material cost of the member in the item master TB7. Further, the arrangement planning device 100 calculates the material cost of the intermediate product from the total value of the material cost of the members constituting the intermediate product and registers it in the item master TB7. Further, the arrangement planning device 100 calculates the material cost of the finished product from the total value of the material costs of the intermediate products constituting the finished product and registers it in the item master TB7.

-About the intermediate product TB8 FIG. 12 is a diagram showing an example of the intermediate product TB8.
Information indicating the relationship between the item (product, intermediate product) and the item (intermediate product, member) used for the production of the item is registered in the intermediate product TB8. The intermediate product TB8 is an item of "item code" that identifies the item, "production line code" that identifies the production line that produces the item, "work process code" that identifies the work process that produces the item, and "item code". The data items include the "item code (intermediate product, member)" of the item used (consumed) in the work process for producing the product, and the "quantity" indicating the quantity of the item to be consumed. For example, in the intermediate product TB8 of FIG. 12, it is shown that 50 items of ITEM007 are consumed to produce one item of ITEM005 in the work of the work process of KOTEI002 of the production line of LINE001.

In the above, the person in charge of registering information in each table is illustrated, but the present invention is not limited to this. Further, the arrangement planning device 100 may be linked with the devices of the personnel department, the production department, and the material department, for example, and the information fetched from other devices may be registered in each table.

Here, the explanation is returned to FIG.
The reception unit 160 receives instruction information regarding the arrangement plan of workers. The instruction information includes information such as the item to be produced, the date, and / or the production number for identifying the production line for which the staffing is planned. The arrangement planning device 100 specifies a plurality of work processes constituting the production line, items produced in the work process, the number of workers to be assigned to the work process, and the like, based on the instruction information received by the reception unit 160. do. In addition, for example, when planning the arrangement of workers by batch processing, the worker information acquisition unit 110 does not have to include the reception unit 160. Further, when planning the arrangement of workers by batch processing, information corresponding to the instruction information is input to the arrangement planning device 100.

Next, the work process information acquisition unit 120 acquires work process information including material costs of items consumed in the work of the work process constituting the specified production line based on the instruction information received by the reception unit 160. .. Specifically, the work process information acquisition unit 120 refers to various tables (production line master TB1, production plan TB2, item master TB7, and intermediate product TB8) stored in the storage unit 104, and works in the work process. Obtain work process information including material costs of items consumed in. The material cost is a value calculated for each work in the work process, and indicates the total value of the material cost of the items consumed in the work in the work process.

Here, for example, a case where the work process information including the material cost of the item (ITEM005) consumed in the work of the work process of KOTEI002 of the production line of LINE001 is acquired will be described. In this case, the work process information acquisition unit 120 combines the "intermediate item code" of the intermediate product TB8 (FIG. 12) and the "item code" of the item master TB7 (FIG. 10) to carry out the material cost of the corresponding item code. "100" is specified as, and "50" is specified as the intermediate product quantity. Then, the work process information acquisition unit 120 acquires the value obtained by multiplying the "material cost" and the "intermediate product quantity" as the material cost of the item consumed in the work of the work process indicated by the "work process code". Further, when a plurality of items are consumed in the work of one work process, the work process information acquisition unit 120 sets the value obtained by adding the material costs of each item in the work of the work process indicated by the "work process code". Acquired as the material cost of the item to be consumed.

By the way, the mode of acquisition of "material cost" is not limited to this. For example, in the table stored in the storage unit 104, the "work process code" indicating the work process and the "material cost" of the item consumed in the work of the work process may be registered in association with each other. Then, the worker information acquisition unit 110 may acquire the "material cost" associated with the "work process code" as the "material cost" of the item consumed in the work of the work process.

Next, the worker information acquisition unit 110 acquires information (worker information) about the worker to be assigned to the work process constituting the production line specified based on the instruction information received by the reception unit 160. Specifically, the worker information acquisition unit 110 refers to various tables (worker master TB3, worker skill TB4, attendance schedule TB5, or process that can be in charge TB6) stored in the storage unit 104, and the work process. For each, the worker information including the labor cost and the scrap rate of the worker is acquired.

The worker information acquisition unit 110 can be used for each "work process" by, for example, combining the "worker code" of the worker master TB3 (FIG. 6) and the "worker code" of the worker skill TB4 (FIG. 7). In addition, the "labor cost" and "average working time" of the worker are specified. Then, the worker information acquisition unit 110 acquires a value calculated based on the "labor cost" and the "average work time" as the labor cost generated by the worker performing the work of the work process. Further, the worker information acquisition unit 110 is, for example, by combining the "worker code" of the worker master TB3 (FIG. 6) and the "worker code" of the worker skill TB4 (FIG. 7), the "work process". ", The worker's" defective rate "is acquired.

By the way, the mode of acquisition of "labor cost" and "scrap rate" is not limited to this. For example, the table stored in the storage unit 104 is associated with the "labor cost" and "scrap rate" of the worker generated in the work of the work process for each combination of the "work process" and the "worker". It may be registered. Then, the worker information acquisition unit 110 may refer to various tables stored in the storage unit 104 and acquire worker information including the labor cost and the defective rate of the worker.

Further, the worker information acquisition unit 110 refers to, for example, the “working day” of the work schedule TB5 (FIG. 8) and plans the arrangement of workers (for example, the “production date” of the production plan TB2 (FIG. 5). You may acquire only the worker information of the worker whose work day is registered in ").

Next, the scrap cost calculation unit 130 calculates the scrap cost weighted by using the scrap rate with respect to the material cost and the labor cost for each combination of the work process and the worker. Here, the material cost of the work process (i) constituting the production line is defined as the material cost (i), and the labor cost of the worker (j) assigned to the work process (i) is defined as the labor cost (i, j). Let the defective rate be the defective rate (i, j). In this case, the scrap cost (i, j) when the worker (j) is assigned to the work process (i) is calculated by the equation (1).

(Number 1)
Defective cost (i, j) = (Material cost (i) x Defective rate (i, j) + α (Labor cost (i, j) x Defective rate (i, j)) ... (1)
1 ≤ i ≤ number of work processes constituting the production line (N)
0 ≤ material cost (i)
1 ≤ j ≤ number of workers (M)
0 ≤ scrap rate (i, j) ≤ 1
0 ≤ labor cost (i, j)
α is a coefficient (0 <α)

The coefficient α may be appropriately determined depending on whether the index of material cost or labor cost is emphasized.

Next, the layout plan generation unit 140 performs each work so that the total value of the defective costs (i, j) of each work process (i) is suppressed as a whole of the plurality of work processes constituting the production line. Generate an arrangement plan of workers (j = 1,2, ..., M) for the process (i = 1,2, ..., N). With such a configuration, the arrangement planning device 100 can easily generate an arrangement plan in which workers with a low defect rate are assigned to a work process having a high material cost, and can be used for a work process having a low material cost. On the other hand, it becomes easier to generate an arrangement plan in which workers with a high defect rate are assigned. Further, the arrangement planning device 100 makes it easy to generate an arrangement plan in which an operator having a low labor cost and / or a low defect rate is arranged in a work process. The layout plan generation unit 140 is formulated as an optimization problem for optimizing the combination of the work process (i) and the worker (j) from the viewpoint of minimizing the total value of the scrap cost (i, j). May be changed.

The output unit 150 displays and outputs the arrangement plan of the worker for each work process generated by the arrangement plan generation unit 140 to the display unit 105.

FIG. 13 is a diagram showing a hardware configuration of the arrangement planning device 100.
The arrangement planning device 100 includes a CPU (Central Processing Unit) 101, a RAM (Random Access Memory) 102, a ROM (Read only Memory) 103, an I / O (Input / Output) interface 108, and a communication unit 107. .. The communication unit 107 is connected to the collection device 200 via a network. The I / O interface 108 is an interface for input to the arrangement planning device 100 or output from the arrangement planning device 100. As shown in FIG. 13, the I / O interface 108 is connected to the storage unit 104, the display unit 105, and the operation unit 106. The operation unit 106 is, for example, a keyboard or a mouse, and receives various operations on the arrangement planning device 100 from the user. Further, the processing result of the arrangement planning device 100 is output to the display unit 105. The display unit 105 is, for example, a display, and displays an image or an image according to a signal output from the arrangement planning device 100.

The CPU 101 is a processor that performs various operations, and by executing a program, the reception unit 160, the worker information acquisition unit 110, the work process information acquisition unit 120, the scrap cost calculation unit 130, and the arrangement plan shown in FIG. Each function of the generation unit 140 and the output unit 150 is realized. The RAM 102 functions as a work area when the CPU 101 executes a program. The ROM 103 stores a program executed by the CPU 101, data used by the program, and the like.

The storage unit 104 is, for example, an HDD (Hard Disk Drive), and is shown in FIG. 2, a production line master TB1, a production plan TB2, a worker master TB3, a worker skill TB4, an attendance schedule TB5, a process that can be in charge TB6, and an item. The master TB7 and the intermediate product TB8 are stored.

The arrangement planning device 100 having the above configuration may be realized by using one computer or may be realized by using a plurality of computers. For example, data may be transmitted and received between a plurality of computers via a communication network, and processing may be performed in cooperation with each other. The computer can be configured by a general-purpose personal computer, a server, or the like.

*** Explanation of operation ***
Next, the processing procedure of the arrangement plan realized by the arrangement planning apparatus 100 shown in FIG. 1 will be described with reference to FIG.
FIG. 14 is a flowchart showing the arrangement planning process.
First, here, as instruction information for the operator of the arrangement planning device 100 to specify the production line for which the arrangement of the workers is planned by operating the operation unit 106, the item to be produced, the date, and / or , Production number, etc. are entered.

The reception unit 160 of the arrangement planning device 100 receives instruction information regarding the arrangement plan of the worker (step S11). Next, the work process information acquisition unit 120 acquires work process information including material costs of items consumed in the work of the work process constituting the production line 300 specified based on the instruction information received by the reception unit 160. (Step S12). Further, the worker information acquisition unit 110 provides information on workers to be assigned to a plurality of work processes constituting the production line specified based on the instruction information received by the reception unit 160, such as the labor cost of the worker and the work. The worker information including the loss rate is acquired (step S13). Next, the scrap cost calculation unit 130 calculates the scrap cost weighted by using the scrap rate with respect to the material cost and the labor cost for each combination of the work process and the worker (step S14). Next, the layout plan generation unit 140 creates a layout plan for each work process so that the total value of the scrap cost of each work process is suppressed as a whole of the plurality of work processes constituting the production line. Generate (step S15). Next, the output unit 150 displays and outputs the arrangement plan of the worker for each work process generated by the arrangement plan generation unit 140 to the display unit 105 (step S16).

The arrangement planning device 100 of the present disclosure calculates the scrap cost for each combination of the work process and the worker so that the total value of the scrap cost is suppressed as a whole of the plurality of work processes constituting the production line. , Generate a worker placement plan for the work process. With such a configuration, the arrangement planning device 100 can easily generate an arrangement plan in which workers with a low defect rate are arranged for a work process having a high material cost, and for a work process with a low material cost. It becomes easy to generate an arrangement plan in which workers with a high defect rate are assigned. Further, the arrangement planning device 100 makes it easy to generate an arrangement plan in which a worker having a low labor cost and / or a worker having a low scrap rate is arranged in a work process. By generating such an arrangement plan, the arrangement planning apparatus 100 has a plurality of work processes in which the increase in production cost is suppressed even if the worker fails the work of the work process and a defective product is generated. It has the effect of being able to plan the placement of workers for.

2. 2. Modifications The above-mentioned examples are merely examples of the implementation of the present invention, and application examples in which the following configurations are added or modified can be considered.
-Modification example 1
In the above-described embodiment, the “labor cost” indicates the labor cost incurred by performing the work in the work process, but the labor cost per unit period of the worker regardless of the work process (FIG. 6). It may indicate the labor cost of the worker master TB3). Further, although the "scrap rate" indicates the probability that the worker will fail the work in the work process, it may indicate the probability that the worker will fail the work regardless of the work process. Then, the worker information acquisition unit 110 may acquire the worker information including the labor cost and the defective rate of the worker regardless of the work process. Even with such a configuration, the layout planning device 100 calculates the "scrap cost" weighted by using the "scrap rate" for each worker with respect to the "material cost" for each work process, and creates a production line. It is possible to generate a worker allocation plan for each work process so that the total value of the scrap cost of each work process is suppressed as a whole of the plurality of constituent work processes. That is, the layout planning device 100 plans the allocation of workers to a plurality of work processes so that even if the workers fail to work in the work process and a defective product is generated, the increase in production cost can be suppressed. be able to.

-Modification example 2
The work process information may include a priority regarding the work process. The priority is high for work processes where it is desired to suppress work damage, for example, the number of parts in stock consumed in the work process is small, or the delivery time of items produced in the work process is short. Is set to be. Then, the work process information acquisition unit 120 acquires the work process information including the priority regarding the work process. Then, the arrangement plan generation unit 140 generates an arrangement plan of the worker so as to suppress the defective cost of the work process having a high priority. With such a configuration, the layout plan generation unit 140 considers an index (priority) that cannot be indicated only by the material cost, and then performs a layout plan in which the scrap cost is suppressed according to the priority. Can be generated. The operator of the arrangement planning device 100 may set the priority in advance. Further, the arrangement planning device 100 may set the priority according to the number of inventories of the members consumed in the work process and / or the delivery date of the items produced in the work process.

-Modification example 3
The worker information acquisition unit 110 may, for example, refer to the available process TB6 (FIG. 9) and acquire worker information including the work process that the worker can be in charge of.
Then, the arrangement plan generation unit 140 may plan the work process for arranging the workers in order from the worker with the smallest number of work processes that can be in charge. With such a configuration, the arrangement plan generation unit 140 can generate an arrangement plan in which the worker is assigned to the work process according to the skill level in consideration of the skill level of the worker.
Further, the arrangement plan generation unit 140 may generate an arrangement plan of workers for the work process in order from the work process in which the number of workers who can be in charge is small. With such a configuration, the arrangement plan generation unit 140 arranges workers according to the difficulty and / or conditions of the work process, for example, in consideration of the difficulty and / or conditions of the work process. You can generate a plan.

-Modification example 4
In the above embodiment, the material cost shall indicate the total value of the material cost of the items consumed in the work of the work process. However, the material cost may be the material cost of an item that cannot be reused when the worker fails the work. For example, even if the screw tightening is failed, the screw can be reused, so that it does not have to be recorded as a material cost. With such a configuration, the layout planning device 100 can generate a plan in which the worker is assigned to the work process based on a more accurate scrap cost.

The process performed by the arrangement planning device 100 described above may be configured as a program for operating the computer.

100 Arrangement planning device, 110 Worker information acquisition unit, 120 Work process information acquisition unit, 130 Defective cost calculation unit, 140 Arrangement plan generation unit, 150 Output unit, 160 Reception unit, 101 CPU, 102 RAM, 103 ROM, 104 Storage unit, 105 display unit, 106 operation unit, 107 communication unit, 200 collection device, 300 production line

Claims (7)

A layout planning device that plans the allocation of workers to multiple work processes that make up a production line that produces products.
A work process information acquisition unit that acquires work process information including material costs of items consumed in the work of the work process, and
The worker information acquisition unit that acquires worker information including the labor cost and scrap rate of the worker, and
A scrap cost calculation unit that calculates a scrap cost weighted by using the scrap rate for the material cost and the labor cost for each combination of the work process and the worker.
As a whole of the plurality of work processes constituting the production line, a layout plan generation unit for generating a layout plan of the worker for the work process is provided so that the total value of the scrap cost is suppressed. Characteristic layout planning device. The worker information acquisition unit
The layout planning device according to claim 1, wherein worker information including the labor cost and the scrap rate of the worker is acquired for each work process. The work process information acquisition unit
Acquire work process information including the priority of the work process,
The layout plan generation unit is
6. Deployment planning device. The worker information acquisition unit
Acquire worker information including work processes that the worker can take charge of,
The layout plan generation unit is
The arrangement planning apparatus according to any one of claims 1 to 3, wherein the work process for arranging the worker is planned in order from the worker having the smallest number of work processes that can be in charge. The worker information acquisition unit
Acquire worker information including work processes that the worker can take charge of,
The layout plan generation unit is
The arrangement planning apparatus according to any one of claims 1 to 3, wherein an arrangement plan of workers for the work process is generated in order from a work process in which the number of workers who can be in charge is small. .. It is a placement planning method that plans the placement of workers for multiple work processes that make up a production line that produces products.
The computer
A work process information acquisition step for acquiring work process information including material costs of items consumed in the work of the work process, and
The worker information acquisition step for acquiring the worker information including the labor cost and the scrap rate of the worker, and
A scrap cost calculation step for calculating a scrap cost weighted by using the scrap rate for the material cost and the labor cost for each combination of the work process and the worker.
With a placement plan generation step that generates a placement plan for the worker for the work process so that the total value of the scrap cost is suppressed as a whole of the plurality of work processes constituting the production line.
A deployment planning method characterized by performing . A program that plans the placement of workers for multiple work processes that make up a production line that produces products.
A work process information acquisition step for acquiring work process information including material costs of items consumed in the work of the work process, and
The worker information acquisition step for acquiring the worker information including the labor cost and the scrap rate of the worker, and
A scrap cost calculation step for calculating a scrap cost weighted by using the scrap rate for the material cost and the labor cost for each combination of the work process and the worker.
A computer is executed with a placement plan generation step to generate a placement plan for the worker for the work process so that the total value of the scrap cost is suppressed as a whole of the plurality of work processes constituting the production line. Program to let you.

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