JP3039470B2 - Method for evaluating capability of unmanned transfer system between equipment and recording medium storing program for causing computer to execute the method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for evaluating the capability of an unmanned transfer system between facilities and a recording medium on which a program for causing a computer to execute the method is recorded. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for evaluating the capability of an unattended inter-equipment transfer system in a production system in which a product is transferred between equipments by an automatic guided vehicle, and a recording medium storing a program for causing a computer to execute the method.

[0002]

2. Description of the Related Art As a conventional method for evaluating the capacity of an unmanned transfer system between facilities in such a production system, it is necessary to grasp and evaluate the capacity of each facility and the transfer capacity of the transfer system as individual capabilities with each other on a desk or by simulation. The production system is performed by using software, etc., and the evaluation of the production system in consideration of both the facility capacity and the transport capacity has not been performed.

[0003] For example, Japanese Patent Application Laid-Open No. 7-200684 discloses a technique for evaluating facility capability using simulation software.
Japanese Patent Publication No. 1735 discloses a technique for collecting data on line operation status and finding a bottleneck process from the collected data.

[0004]

A first problem of the prior art is that a bottleneck process (when both the transfer capacity and the equipment capacity are considered) caused by the combination of the transfer and the equipment is considered. However, it is difficult to find out before the system is constructed, so that the system cannot be started up smoothly.

[0005] The reason is that it is possible to evaluate the transfer capability based on data such as the transfer route, transfer speed, transfer number, and transfer carriage number by using simulation software on a desk. This is because no neck process caused by the combination with the equipment has been found. It is not impossible to use a simulation to model both transport and equipment to find a bottleneck process, but it takes a very long time because the simulation model becomes very large and complicated. Also, the neck process is difficult to find.

[0006] The second problem is that the input parameter for finding the bottleneck process (in consideration of both the transfer capacity and the equipment capacity) caused by the combination of the transfer and the equipment includes "conveying a transfer request. From the time until the transfer vehicle is assigned, but that time cannot be easily calculated in advance.

An object of the present invention is to improve the productivity (the number of products that can be produced) of a system by finding a bottleneck process caused by a combination of transport and equipment, and to find a bottleneck process before constructing a system. It is an object of the present invention to provide a method for evaluating the capability of an unmanned transfer system between equipment and a recording medium storing a program for causing a computer to execute the method.

[0008]

According to the present invention, there is provided an unmanned transfer system between equipments in which each product is conveyed by an unmanned conveyance vehicle and processing of the product is performed in each of the scattered facilities. An evaluation method, comprising: a first step of determining whether a transport capacity causes a failure to achieve a target production amount; and a second step of determining whether each of the facility capacities causes a failure to achieve the production target. And a third step of determining whether or not a combination of each of the facility capacities and the transport capacity causes a failure to achieve the production target. The ability evaluation method is obtained.

[0009] When it is determined in the first step that the transport capacity cannot achieve the production target, it is determined that the transport itself becomes a bottleneck in production, and the first step is performed. In the step, when it is determined that the transport capacity does not cause the production target to not be achieved, the process proceeds to the second step.

Further, in the second step, the first step
To the n-th facility (n is an integer of 2 or more) from one to another, and in the third step, the i-th (i is 1 to n) in the second step
If it is determined that the capacity of the facility of (up to an integer) does not cause the production target to not be attained, whether the combination of both the transfer capacity and the facility capacity causes the failure to achieve the production target for the i-th facility Is determined.

When it is determined that the combination of both the transfer capacity and the equipment capacity of the i-th equipment cannot achieve the production target, it is determined that the i-th equipment itself becomes a bottleneck in production. Further, the evaluation for the determination of the transfer capacity is performed by the number of transfers per unit time in the transfer of the entire target system, one transfer time, the number of automatic guided vehicles, the number of transfer per unit time. It is characterized in that it is performed according to the maximum operation time of the automatic guided vehicle.

Further, the evaluation for determining the capability of the equipment is performed in accordance with the occupation time in the equipment, the maximum number of works that can be performed, the number of processing of the equipment per unit time, and the unit time. The evaluation for determining the combination of each equipment capacity and the transfer capacity in the third step is as follows:
It is characterized in that the processing is performed in accordance with the occupation time of the equipment, the maximum number of works that can be started, the number of processing of the equipment per unit time, and the unit time.

According to the present invention, a computer executes a method for evaluating the capability of an inter-equipment unmanned transfer system in which uninterrupted transfer of a product by an unmanned transport vehicle is performed in each of the scattered facilities. A first step of determining whether or not the transport capacity is a cause of failure to achieve the target production amount, and a cause of failure of each of the facility capacities to achieve the production target. And a third step of determining whether or not a combination of each of the facility capacities and the transport capacity causes a failure to achieve the production target. A recording medium is obtained.

The operation of the present invention will be described. Evaluation of whether transfer capacity is a bottleneck (causing it to fail to achieve production targets), evaluation of whether equipment capacity is a bottleneck, and whether combination of both transfer and equipment capacities is a bottleneck In consideration of the above evaluation, even when the bottleneck is not determined due to the transport capacity or the equipment capacity, the evaluation is performed by a combination of the two capacities.

The transfer capacity is evaluated based on the number of transfers per unit time in the transfer of the entire target system, one transfer time, the number of automatic guided vehicles, the maximum operating time of the automatic guided vehicle per unit time, and the like. Then, it is determined whether or not the transport capacity is a bottleneck. The evaluation of the equipment capacity includes the occupancy time of the equipment group (not including the transportation) (from the time when the transportation to the equipment is reserved until the processing is completed and carried out by the equipment), the maximum number of work in process, and the It is determined for each equipment (process) whether or not a combination of transport and processing of the equipment becomes a bottleneck based on the number of processings of the equipment, the unit time, and the like.

Thus, by performing the above-mentioned evaluation before constructing the system, it is possible to find out in advance the bottleneck process caused by the combination of the transport and the equipment. Possible number) can be improved.

[0017]

Next, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a flowchart showing an evaluation procedure of the method for evaluating the capability of an unmanned transfer system between equipments according to the present invention, and FIG.
Is a diagram showing the in-process range of the target process and the processes before and after it when judging whether or not the process becomes a bottleneck in consideration of both the transport capacity and the facility capacity (4 in FIG. 1), and FIG. Of an unmanned transfer system between equipments to be evaluated by the method for evaluating the capability of an unmanned automatic transfer system during transfer, FIG.
FIG. 5 is a diagram showing the structure of FIG. 2 in detail, and FIG. 5 is a diagram showing the process from when a transfer request is issued in the previous process to when the product is completely loaded on the transport vehicle in the target process as the in-process range 14 of the target process in FIG. FIG. 6 is a diagram showing the in-process range of the target process and processes before and after the process when it is determined whether or not the process becomes a bottleneck (4 in FIG. 1) when both the capacity and the facility capacity are considered. It is the figure (76) which expressed the flow of the process of the in-process range 55 with time, and the figure (77) which classified and summarized each time (61-70).

The method for evaluating the capability of the inter-equipment transfer system according to the present invention provides a method of evaluating the transfer and processing of equipment in a production system in which products are lowered in scattered equipment and transferred between the equipment by an unmanned carrier. It is a method of evaluating whether each process becomes a bottleneck process by the combination (considering both the transfer capability and the facility capability).

First, a description will be given of an inter-equipment transfer system to be subjected to capacity evaluation. As shown in FIG. 3, equipment groups 22 are scattered and arranged in the factory, and the equipment groups 22 are connected to each other by the transfer path 21 of the automatic guided vehicle 23, and are transferred from the equipment group 22 to the equipment group 22. The product 24 is transported by an unmanned transport vehicle 23 passing through a transport path 21.

The product 24 is processed through two to several hundred equipment groups 22. That is, the product is transported from two to several hundreds of equipment groups 22 to the equipment group 22, where it is processed and completed as a product 24.

As shown in FIG. 4, one equipment group 22 can be machined under the same conditions even if a plurality of equipments 36 performing the same processing are selected (in other words, any equipment 36 in the equipment group 22 is selected). Multiple facilities 3 within a certain range
6). The equipment 36 includes an equipment loader unit 31, a buffer unit 32 before equipment, a processing unit 33, a buffer unit 34 after equipment, and an unloader unit 35.

The product flows in the following order: the equipment loader 31, the equipment buffer 32, the equipment processing unit 33, the equipment buffer 34, and the equipment unloader 35.

The equipment loader 31 is a part for receiving the product 24 from the automatic guided vehicle 23, the equipment unloader 35 is a part for delivering the product 24 to the automatic guided vehicle 23, the equipment processing part 33 is a part for actually performing processing, equipment The front buffer unit 32 and the post-equipment buffer unit 34 refer to buffer parts between the equipment loader unit 31 or the equipment unloader unit 35 and the equipment processing unit 33. Functionally, they can be divided into 31 to 35, but in actuality, 31 and 32 or 34 and 35 are one, and 31, 32, 34, and 35 are one.
There are many things that are connected.

Hereinafter, when describing the relationship between the equipment group 22 and the equipment 36, the equipment group 22 uses the term "equipment group". However, when the relationship between the equipment group 22 and the equipment 36 does not matter, the equipment group is referred to as the equipment group. The description will be made using the term "process" or "equipment" in a general sense.

Further, the definition of “process is a bottleneck” or “neck process” is based on how efficiently a product can be manufactured under the conditions based on the combined capacity of the transportation and the processing of the facility or the capacity of the facility alone. Even if processed, obviously
Here, a process that is determined to be unable to achieve the target production amount will be referred to herein.

Next, a description will be given of the flow of the products of the transportation and the equipment which are the targets of the performance evaluation. In FIG. 5, the start of one process is considered to be the time of arrival at the unloader section (42) in the previous process (41). When a product arrives at the unloader section (42), a request for a transport vehicle is made to the transport system. When the truck arrives, the products are loaded on the truck (4
4), transport is performed (45), and the product is lowered in the target process (46). Then, processing is performed in the equipment (47-50),
Requests transport to the next process and loads the product on the transport vehicle (5
3). This is considered as one process.

When it is determined whether or not a process becomes a bottleneck due to a combination of transport and equipment processing, the in-process range of the target process is determined after the product arrives at the unloader section (42) of the previous process. It is assumed that the product is carried out from the unloader (53). In other words, as shown in FIG. 2, after the thing in the previous process is reserved as a work in process (13 in FIG. 2), the processing (14) in the equipment is performed, and until it is released as a work in equipment (17). ).

It is assumed that the maximum number of processes that can be performed in the “target process in-process range” does not change with time.

Time (76) in FIG. 6 is defined in chronological order with respect to the transport and the flow of the equipment. It is 77 (63-75) that 76 is classified and put together.
become.

Next, an evaluation procedure of the method for evaluating the capability of the automatic transfer system between facilities according to the present invention will be described with reference to the flowchart of FIG. In order to make the description simple and easy to understand, the process names are process I, process 2,..., Process N.

First, an outline of the evaluation method will be described.
The method for evaluating the capability of an unmanned transfer system between equipments according to the present invention basically includes an evaluation step 1 for determining whether the transfer capability is a bottleneck.
And an evaluation step 8 for evaluating whether the facility capacity of each process itself is a bottleneck, and an evaluation step 4 for determining whether each process is a bottleneck due to a combination of transport and equipment processing.

First, an evaluation step 1 is performed to determine whether the transport capacity is a bottleneck. If it is determined as “Yes” in this evaluation, that is, if it is determined that the transport itself becomes a bottleneck (step 2), it is determined that the combination of the transport and the processing of the equipment also becomes a bottleneck, and the unmanned transport system capability The evaluation ends.

If the result of the evaluation in step 1 is “No”, an evaluation is made as to whether or not the facility capacity of each process itself becomes a bottleneck (step 8), and each of the processes is bottlenecked by a combination of transport and equipment processing. Is evaluated (step 4). The evaluation in step 8 does not consider the transfer parameters (only the equipment parameters are considered), and regarding the processes I to N, the equipment occupancy time, the maximum number of equipment that can be completed, and the number of processes per unit time in each process. , Unit time (steps 3, 6, 7). The evaluation in Step 4 takes into account the transport parameters, and is performed based on the process occupation time, the maximum number of processes that can be completed in process, the number of processes per unit time, and the unit time for each of the processes I to N (Step 3). , 6,7).

If it is determined "Yes" in the evaluation of step 8, that is, if it is determined that the process I becomes a bottleneck due to the equipment itself (step 5), the process I becomes a bottleneck in the evaluation of step 4. It is determined to be.

If the determination in step 8 is “No”, the evaluation in step 4 is performed. If it is determined as “Yes” in the evaluation in Step 4, it is determined that the process I becomes a bottleneck due to the combination of the transport and the device (Step 5), although the equipment itself and the transport itself are not a bottleneck.
If it is determined to be “No” in the evaluation in step 4, it is determined that the process I does not become a bottleneck even by a combination of transport and equipment.

Next, details of the evaluation method will be described.
Whether the transfer capacity becomes a bottleneck (Step 1) depends on the number of transfers per unit time in the transfer of the entire target system, one transfer time, the number of automatic guided vehicles (AGV), and the number of vehicles per unit time. The determination is made by substituting the maximum possible operating time of the automatic guided vehicle into the following equation (1). The following (1)
If the formula holds, it is determined that the transport capacity is not a bottleneck. If the following equation (1) does not hold, it is determined that the transport capability itself is a bottleneck.

1> {total number of transfers (times / unit time) × transport time (hours / time)} {number of AGVs (units) × AGV operating time (hours / unit / unit time)} (1) In the formula (1), “total number of times of conveyance (times / unit time)”
Means the total number of transfers per unit time necessary to produce the target production volume. In addition, “Transportation time (time /
")" Means a transport time per one time. In particular,
In addition to the transfer time from the equipment to the equipment, it is assumed that a transfer request from the equipment is received, and then the transfer is performed until the next transfer request can be received.

Further, "AGV operating time (hour / vehicle / unit time)" means the maximum possible operating time of an AGV per unit time. Specifically, it refers to the maximum operating time, excluding charging and failure time.
The numerator of the expression (1) represents the total time required for carrying out the transport necessary to produce the target production amount, and the denominator represents the total operating time of the AGVs as viewed from the number of AGVs.

The evaluation of the equipment capacity itself (step 8) and the evaluation in consideration of both the transport capacity and the equipment capacity (step 4) are performed for each process. In the following, a method of performance evaluation will be described by taking one process, process I, as an example in the target system.

The evaluation (step 8) as to whether or not the equipment capacity itself becomes a bottleneck is performed by substituting the equipment occupation time, the maximum number of work in process, the number of processes, and the unit time in each process into the following equation (2). To judge. It is determined that the process in which the following equation (2) does not hold is a bottleneck process, in other words, the target production amount cannot be achieved due to this process.

1> {Equipment occupation time (hours) / Maximum possible work in process (Number)} {Unit time (hours) / Number of processes (Number / unit time)} (2) In equation (2), The range of the "maximum possible number of pieces of equipment in process (pieces)" is 13 to 17 in FIG. “Equipment occupancy time” is the minimum time occupied by the equipment (in-process time minus waiting time). The “number of processes” refers to the number of processes of the equipment per unit time required to produce the target production amount.
"Unit time" refers to a unit time for processing several minutes.

It is determined whether the target process becomes a bottleneck when both the facility capacity and the transport capacity are considered. Next, the evaluation method of step 4 will be described in detail. In the evaluation step 4 of determining whether or not a bottleneck occurs when both the facility capacity and the transport capacity are considered, the occupation time, the maximum number of work in process, and the number of processes in each process are substituted into the following equation (3). to decide. It is determined that the step where the following equation (3) does not hold is a bottleneck step, in other words, the target production amount cannot be achieved due to this step.

1> {process occupation time (time) / maximum process in process possible number (pieces)} {unit time (hour) / number of processes (pieces / unit time)} (3) In equation (3), The “number of processes” refers to the number of processes of the equipment per unit time required to produce the target production amount.
"Unit time" refers to a unit time for processing several minutes.
The range of the “maximum number of processable works (pieces)” is 13 to
17 or 55 in FIG. The occupancy time can be expressed by the following equation. Details of the occupation time are as shown in FIG.

Occupancy time = Issuing a transport request in the previous process-Time when the transport vehicle comes to pick up the product in the current process = Time from issuing the transport request to assigning the transport vehicle × 2 + Transport vehicle is assigned Time from arrival x 2 + Equipment processing time + Waiting time other than the above (before equipment processing, blocking after processing, after processing, etc.) + Loading / unloading time + Transport time The time from the start until the carrier is assigned can be derived from the queue formula as follows.

Average time from issuance of a transport request to assignment of a transport vehicle = vehicle occupation time × [1 / {1−transport vehicle occupation time (time) × transport number (times / unit time)} −
1] * Carrier occupancy time = time from when the carrier is assigned + carrier time + loading / unloading time * However, when 0 <carrier occupancy time x carrier count <1 From the formula of the queue The guidance is as follows. When the average staying time is R, the average number of stays is N, the waiting time is T, the service time is S, and the throughput is X, the following formula holds.

N = XR (Little formula) R = S + SN R = T + S From these formulas, the following equation is obtained.

From the formula, T = S × {1 / (1-SX) -1} From this formula, the waiting time from when a transport request is issued for T to when a transport vehicle is assigned, and S is the service time of transport (transport occupancy) Time) and X are the above formulas when X is the number of times of conveyance per unit time.

[0049]

Next, embodiments of the present invention will be described in detail. The following system is used as an example to evaluate whether a process becomes a bottleneck. Hereinafter, evaluation of one of a plurality of processes will be described as an example. The transfer conditions are as follows (the unit time is one hour).

Number of times of transfer: 9 times / unit time Transfer time: 5 minutes / time (time from assignment of transfer vehicle to completion of transfer) Number of AGVs: 5 AGV operation time: 50 minutes / unit time The conditions of the equipment and the conditions when the capacity of the transfer and the equipment are considered are as follows (the unit time is one hour).

Equipment occupation time: 5 minutes Maximum possible work in process: 1 Unit time: 60 minutes Number of processes: 8 pieces / unit time Process occupation time: 10 minutes Maximum work in process: 1 Process occupation time The breakdown is considered as follows.

Time from when a transfer request is issued to when a transfer vehicle is assigned: 1 minute × 2 Time from when the transfer vehicle is assigned until it arrives: 1 minute × 2 Transfer time (from loading to unloading) : 1 minute Others: 0 minutes Equipment processing time: 5 minutes First, it is determined whether or not transport is a bottleneck.

Since the following equation holds: 1> (9 times × 5 minutes) / (2 units × 50 minutes), it can be determined that transport is not a bottleneck. Next, it is determined whether the equipment itself becomes a bottleneck.

1> (5 minutes / 1 piece) / (60 minutes / 8 pieces) Since the equation holds, it can be determined that the equipment itself is not a bottleneck.

Next, it is determined whether or not it becomes a bottleneck in consideration of the transporting and facility capabilities. Since the formula of 1> (10 minutes / 1 piece) / (60 minutes / 8 pieces) does not hold, it can be determined that it becomes a bottleneck when transport and equipment are considered.

Next, the "time from when the transfer request is issued until the transfer vehicle is assigned" is calculated (assuming it is unknown). The above values are used for the values required for the calculation.

Car occupancy time = 1 + 1 + 0 = 2 minutes Time from issuing a transfer request to assignment of a carrier = 2 × {1 / (1-2 × 0.15) −1} = 0.86
Note that the flowchart of FIG. 1 is realized by performing operation control by a computer. In this case, the procedure of this flowchart is recorded as a program on a recording medium, and is read by a computer. You just have to do it.

[0058]

The first effect is the early start-up of the system by the early detection of the bottleneck process, and the improvement of the productivity (the number of products that can be produced) of the system.

The reason for this is that by implementing the method of evaluating the capability of the unmanned transport system of the present invention before constructing the system, it is caused by a combination of transport and equipment (when both the transport capability and the facility capability are considered). This is because it is possible to find the neck process in advance.

[Brief description of the drawings]

FIG. 1 is a flowchart showing an evaluation procedure of the method for evaluating the capability of an unmanned transfer system between equipments according to the present invention.

FIG. 2 is a diagram showing a work-in-progress range of a target process and processes before and after the process when it is determined whether or not a neck process is to be performed when both the transfer capability and the facility capability are considered (4 in FIG. 1).

FIG. 3 is a diagram illustrating an inter-facility unmanned transfer system to be evaluated by the inter-facility unmanned transfer system capability evaluation method according to the present invention.

FIG. 4 is a diagram showing details of the structure of a facility group 22.

FIG. 5 Considers both the transfer capacity and the equipment capacity when the process from when a transfer request is issued in the previous process to when the product is completely loaded on the transfer vehicle in the target process is set as the in-process range 14 of the target process in FIG. FIG. 9 is a diagram showing a process range of a target process and processes before and after the process when it is determined whether or not the process becomes a neck process (4 in FIG. 1).

6 is a diagram (76) expressing the processing flow of the in-process range 55 of the target process in FIG. 5 in time and a diagram (77) in which each time (61 to 70) is classified and summarized.

[Explanation of symbols]

13 Timing of Reserving Products as Work in Process of Target Process 14 Process Range of Work in Process 15 Workable Area 17 Timing of Release of Product from Work in Process of Target 21 Transfer Route of Automated Carrier 22 Equipment Group 23 Unmanned Transfer Vehicles 24 Products transported by automatic guided vehicles 31 Equipment loader unit 32 Buffer unit before equipment 33 Equipment processing unit 34 Buffer unit after equipment 35 Equipment unloader unit 36 Overall equipment 37 Represents a plurality of equipment 36 42 Carrier vehicle Buffer waiting until called 43 Loading (products are loaded from the buffer to the transport vehicle) 44 Products loaded on the transport vehicle 45 During transport 46 Unloading (products are dropped from the transport vehicle to the equipment loader) 47) Equipment loader 31 or buffer 32 before equipment
The product is being processed in the equipment processing part 48 The product is being processed in the equipment processing part 33 50 The buffer part after equipment or the equipment unloader part 35
52 Product loading 52 Loading (products are loaded from a buffer to a carrier) 55 Process range of the target process 56 Equipment group

Claims (10)

(57) [Claims] 1. A method for evaluating the performance of an inter-equipment unmanned transfer system in which processing of the product is performed in each of the scattered facilities while the product is being conveyed by an unmanned transport vehicle, wherein the transfer capacity is a target. A first step of determining whether or not the production capacity cannot be achieved; a second step of determining whether or not each of the facility capacities can not achieve the production target; and each of the facility capacities. And a third step of determining whether or not a combination of the transfer capability and the transfer capability causes the production target not to be attained. 2. The method according to claim 1, wherein in the first step, when it is determined that the transport capacity cannot achieve the production target, the transport itself is determined to be a bottleneck in production. Evaluation method of unmanned transfer system between equipments. 3. The method according to claim 1, wherein, in the first step, when it is determined that the transfer capacity does not cause the production target to not be achieved, the process proceeds to the second step. A method for evaluating the capabilities of unmanned transfer systems between equipment. 4. The apparatus according to claim 1, wherein in the second step, the respective capabilities of the first to n-th (n is an integer of 2 or more) facilities are sequentially determined. Evaluation method of unmanned transfer system between equipments. 5. The method according to claim 3, wherein in the third step, the second
When it is determined in the step that the capacity of the i-th equipment (i is an integer from 1 to n) does not cause a failure to achieve the production target, both the transfer capacity and the equipment capacity of the i-th equipment are determined. 5. The method according to claim 4, wherein it is determined whether the combination causes a failure to achieve the production target. 6. When it is determined that the combination of both the transfer capacity and the equipment capacity of the i-th equipment cannot achieve the production target, the i-th equipment itself is determined to be a bottleneck in production. 6. The method for evaluating the capability of an unmanned transfer system between facilities according to claim 5, wherein: 7. The evaluation for determining the transfer capacity includes the number of transfers per unit time in the transfer of the entire target system, one transfer time, the number of automatic guided vehicles, and the automatic guided vehicle per unit time. The method according to any one of claims 1 to 6, wherein the evaluation is performed in accordance with the maximum operation time. 8. The evaluation for judging the capacity of the equipment,
8. The method for evaluating the capacity of an unmanned transfer system between equipment according to claim 1, wherein the processing is performed in accordance with the occupation time in the equipment, the maximum number of works that can be started, the number of processing of the equipment per unit time, and the unit time. . 9. The evaluation for determining the combination of each facility capacity and the transport capacity in the third step includes the occupation time of the facility, the maximum number of works in process, the number of facilities to be processed per unit time, and the unit. The method according to any one of claims 1 to 8, wherein the method is performed according to time. 10. A program for causing a computer to execute a capability evaluation method of an inter-equipment unmanned transfer system in which a product is processed in each of the scattered facilities while the product is being transferred by an unmanned transport vehicle. A first step of determining whether or not the transport capacity is a factor that cannot achieve the target production amount; and determining whether each of the facility capacities is a factor that cannot achieve the production target. A recording medium recording a program, comprising: a second step of determining; and a third step of determining whether a combination of each of the facility capacities and the transport capacity causes a failure to achieve the production target.