Industrial machine maintenance management device and production system

Abstract

The invention provides a maintenance management device for an industrial machine. The maintenance management device can perform maintenance management of the industrial machine in consideration of inventory conditions of replacement components. This maintenance management device for industrial machines manages the maintenance of a plurality of industrial machines, and is provided with: an operation information acquisition unit that acquires operation information for the plurality of industrial machines; a failure prediction unit that predicts, from among the components of the plurality of industrial machines, a failure prediction component that is predicted to be faulty, and a failure prediction time thereof, on the basis of the acquired operation information; an inventory information acquisition unit that acquires inventory information relating to the inventory and purchase of replacement components of the components of the plurality of industrial machines; and a maintenance priority determination unit that determines the maintenance priority of the failure prediction components of the plurality of industrial machines on the basis of the predicted failure prediction time of the failure prediction components and the acquired inventory information of the replacement components.

Description

Technical Field

[0001] The present invention relates to a maintenance management device and a production system for industrial machinery. Background Art

[0002] In a production system using multiple industrial machines, the production system may be stopped for a long time due to a failure of one industrial machine. In this case, great damage may occur. In order to avoid such a situation, a technology is known that predicts the failure of industrial machinery in advance and performs maintenance management (preventive maintenance) by replacing the parts predicted to have failed in advance (for example, refer to Patent Document 1).

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2006-285884 Summary of the invention

[0006] Problems to be solved by the invention

[0007] However, if the replacement parts are not in stock and the lead time for procurement of the replacement parts (the time from ordering to delivery) is long, the failure-predicted parts may fail before they are repaired.

[0008] Therefore, maintenance management of industrial machinery taking into account the inventory status of replacement parts is desired.

[0009] Means for solving problems

[0010] The maintenance management device of industrial machinery disclosed in the present invention is a maintenance management device for managing the maintenance of multiple industrial machinery, and the maintenance management device comprises: an operation information acquisition unit, which acquires the operation information of the multiple industrial machinery; a fault prediction unit, which predicts the fault prediction components predicted to fail and their predicted failure periods among the multiple industrial machinery components based on the acquired operation information; an inventory information acquisition unit, which acquires inventory information related to the inventory and procurement of replacement components for the multiple industrial machinery components; and a maintenance priority determination unit, which determines the maintenance priority of the fault prediction components of the multiple industrial machinery based on the predicted failure prediction period of the fault prediction components and the acquired inventory information of the replacement components.

[0011] The production system disclosed in the present disclosure includes a plurality of industrial machines, the maintenance management device for the industrial machines, and an inventory management device for managing inventory and procurement of replacement parts for the plurality of industrial machines.

[0012] Effects of the Invention

[0013] According to the present disclosure, maintenance management of industrial machinery can be performed in consideration of the inventory status of replacement parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a diagram showing an example of a production system including the maintenance management device for industrial machinery according to the present embodiment. DETAILED DESCRIPTION

[0015] Hereinafter, an example of an embodiment of the present invention will be described with reference to the accompanying drawings. In addition, in each of the drawings, the same reference numerals are attached to the same or corresponding parts.

[0016] Figure 1 1 is a diagram showing an example of a production system including an industrial machinery maintenance management device according to the present embodiment. Figure 1 As shown, the production system 100 includes a plurality of industrial machines 30 , a maintenance management device 10 , and an inventory management device 20 .

[0017] Each industrial machine 30 includes, for example, a robot 32 and a robot control device 34. The robot 32 has a plurality of drive axes J1, J2, J3, J4, J5, and J6, and is provided with, for example, a hand H that can hold a workpiece, or a tool H that can process a workpiece, at the front end. The robot 32 can move the hand H or the tool H by driving the drive axes J1 to J6, thereby performing a desired operation. The robot 32 can be a vertical multi-joint robot as shown in the figure, but is not limited thereto, and can also be, for example, an orthogonal coordinate robot, a horizontal multi-joint robot, a parallel robot, etc.

[0018] The robot control device 34 controls the robot 32. Specifically, the robot control device 34 operates the robot 32 according to the provided operation program. More specifically, the robot control device 34 can adopt the following well-known structure: in order to operate according to the processing program, the position or speed of each driving axis J1 to J6 of the robot 32 required at each time is calculated, and the current required for each driving axis J1 to J6 of the robot 32 is applied. In addition, the robot control device 34 sends the operation information and the accumulated operation time to the maintenance management device 10. The above operation information includes the current operation status and past operation performance of the operation time of the robot 32.

[0019] The maintenance management device 10 and the inventory management device 20 may be arranged on the factory side where the industrial machine 30 is arranged, or may be arranged on the server side connected to the industrial machine 30 via a network. Alternatively, the maintenance management device 10 may be arranged on the factory side, and the inventory management device 20 may be arranged on the server side, or the maintenance management device 10 and the inventory management device 20 may be connected via a network.

[0020] The inventory management device 20 manages the inventory and procurement of replacement parts for the robot 32 in the plurality of industrial machines 30. Examples of the parts include maintenance parts such as driving parts (e.g., motors), hands, or tools of the robot 32. The inventory management device 20 manages, for example, the following inventory information related to the inventory and procurement of replacement parts.

[0021] Component ID

[0022] Product number / name

[0023] ·unit price

[0024] ·Quantity of inventory

[0025] ·Quantity of next order (unit)

[0026] Date of entry and exit

[0027] Inventory Day

[0028] Cumulative inventory amount

[0029] Procurement lead time (the time from ordering to delivery)

[0030] ·supplier

[0031] The inventory management device 20 may also notify the maintenance management device 10 of the following information: inventory information related to the inventory and procurement of replacement parts that are out of stock or insufficient in stock, especially the inventory quantity (inventory status) and the procurement lead time (procurement status). Alternatively, the inventory management device 20 may also send the following information to the maintenance management device 10 based on the inquiry from the maintenance management device 10: inventory information related to the inventory and procurement of the inquired parts, especially the inventory quantity (inventory status) and the procurement lead time (procurement status).

[0032] The maintenance management device 10 monitors and diagnoses a plurality of industrial machines 30, and manages the maintenance (preventive maintenance, overhaul) of the plurality of industrial machines 30. Specifically, the maintenance management device 10 collects the operation information of the plurality of industrial machines 30, predicts the predicted failure components and their predicted failure periods in the plurality of industrial machines 30 based on the collected operation information, and determines the maintenance priority of the predicted failure components in the plurality of industrial machines 30 based on the predicted failure periods of the predicted failure components. At this time, the maintenance management device 10 cooperates with the inventory management device 20 to determine the maintenance priority of the predicted failure components based on the inventory status of the replacement components of the predicted failure components, or when there is no inventory, determines the maintenance priority of the predicted failure components based on the procurement status of the replacement components of the predicted failure components (for example, procurement lead time). The maintenance management device 10 includes an operation information acquisition unit 11, an inventory information acquisition unit 12, a failure prediction unit 14, a maintenance priority determination unit 15, a storage unit 16, and a notification unit 18.

[0033] The operation information acquisition unit 11 is a communication interface that complies with a known wireless or wired communication standard. The operation information acquisition unit 11 acquires the operation information of each industrial machine 30 from the robot control device 34 of each industrial machine 30. The operation information may include the current operation status, past operation performance, and accumulated operation time related to the operation time of the robot 32 of the industrial machine 30.

[0034] The inventory information acquisition unit 12 is a well-known communication interface that complies with wireless or wired communication standards. The inventory information acquisition unit 12 is notified by the inventory management device 20 of inventory information related to the inventory and procurement of replacement parts that are out of stock or insufficient in stock. Alternatively, the inventory information acquisition unit 12 inquires the inventory management device 20 and obtains from the inventory management device 20 inventory information related to the inventory and procurement of replacement parts for the failure prediction parts predicted by the failure prediction unit 14 described later. The inventory information acquisition unit 12 may also periodically inquire the inventory management device 20 and periodically obtain the latest inventory information. The inventory information may include the inventory status including the inventory quantity of the replacement parts and the procurement status including the procurement lead time of the replacement parts.

[0035] The fault prediction unit 14 and the maintenance priority determination unit 15 are composed of, for example, a CPU (Central Processing Unit), a DSP (Digital Signal Processor), an FPGA (Field-Programmable Gate Array) or other computing processors. The various functions of the fault prediction unit 14 and the maintenance priority determination unit 15 are realized, for example, by executing predetermined software (programs) stored in the storage unit 16. The various functions of the fault prediction unit 14 and the maintenance priority determination unit 15 can be realized by the cooperation of hardware and software, or by hardware (electronic circuits) alone.

[0036] The storage unit 16 is, for example, a memory such as a ROM (Read Only Memory), a HDD (Hard Disk Drive), or a SSD (Solid State Drive). The storage unit 16 stores predetermined software (programs) for executing various functions of the above-mentioned fault prediction unit 14 and the maintenance priority determination unit 15. In addition, the storage unit 16 may also temporarily store the operation information obtained by the operation information acquisition unit 11 and the inventory information obtained by the inventory information acquisition unit 12. In addition, the storage unit 16 may also temporarily store the fault prediction components predicted by the fault prediction unit 14 and their fault prediction periods, and the maintenance priorities determined by the maintenance priority determination unit 15.

[0037] The failure prediction unit 14 predicts a failure-predicted component predicted to fail among the components of the plurality of industrial machines 30 and its predicted failure time based on the operation information acquired by the operation information acquisition unit 11 .

[0038] Here, for example, regarding maintenance parts such as hands or tools, there are recommended operating times recommended by suppliers or obtained from past usage records. Therefore, for example, the failure prediction unit 14 can predict failures and failure times of maintenance parts such as hands or tools based on the accumulated operating time.

[0039] The maintenance priority determination unit 15 determines the maintenance priorities of the predicted failure components of the plurality of industrial machines 30 based on the predicted failure times of the predicted failure components predicted by the failure prediction unit 14 and the inventory information of the replacement components acquired by the inventory information acquisition unit 12 .

[0040] For example, the maintenance priority determination unit 15 determines the maintenance priority of the fault prediction components in the plurality of industrial machines 30 mainly based on the fault prediction period. Here, even if the replacement parts are out of stock, if the lead time for purchasing the replacement parts is relatively short, the stock of the replacement parts can still be ensured before the inspection. On the other hand, if the lead time for purchasing the replacement parts is relatively long, there may be a situation where the stock of the replacement parts cannot be ensured before the inspection, and the implementation date of the inspection must be adjusted. Therefore, when the replacement parts are out of stock and the lead time for purchasing the replacement parts is longer than the predetermined value, the maintenance priority determination unit 15 lowers the maintenance priority of the fault prediction component.

[0041] For example, if the maintenance management device 10 is arranged on the factory side where the industrial machine 30 is arranged, the notification unit 18 may also be a display device such as a liquid crystal display or an organic EL display. Such a notification unit 18 displays (notifies) the maintenance priority of the failure prediction parts in the plurality of industrial machines 30 determined by the maintenance priority determination unit 15. In addition, the notification unit 18 may also display (notify) the failure prediction parts and the failure prediction period in the plurality of industrial machines 30 predicted by the failure prediction unit 14. In addition, when the inventory information of the replacement parts obtained from the inventory management device 20 indicates insufficient inventory, the notification unit 18 may also display (notify) information on insufficient inventory.

[0042] Alternatively, for example, if the maintenance management device 10 is configured on the server device side connected to the industrial machine 30 via a network, the notification unit 18 may also be a well-known communication interface that complies with wireless or wired communication standards. Such a notification unit 18 will send (notify) the maintenance priority of the fault prediction components among the multiple industrial machines 30 determined by the maintenance priority determination unit 15 to the factory side where the industrial machine 30 is configured via the network. As a result, on the factory side, the maintenance priority of the fault prediction component can be displayed on a display device such as a liquid crystal display or an organic EL display. In addition, the notification unit 18 may also send (notify) the fault prediction components and the fault prediction period among the multiple industrial machines 30 predicted by the fault prediction unit 14 to the factory side where the industrial machine 30 is configured via the network. As a result, on the factory side, the fault prediction components and the fault prediction period can be displayed on a display device, for example. In addition, when the inventory information of the replacement parts obtained from the inventory management device 20 indicates that the inventory is insufficient, the notification unit 18 may also send (notify) the information of insufficient inventory to the factory side where the industrial machine 30 is configured via the network. As a result, at the factory side, information indicating that the replacement parts are out of stock can be displayed on, for example, a display device.

[0043] As described above, according to the maintenance management device 10 of the present embodiment, the operation information of the plurality of industrial machines 30 is collected, and the predicted fault components and their predicted fault periods in the plurality of industrial machines 30 are predicted based on the collected operation information, and the maintenance priority of these predicted fault components in the plurality of industrial machines 30 is determined based on the predicted fault periods of the predicted fault components. At this time, the maintenance management device 10 cooperates with the inventory management device 20 to determine the maintenance priority of the predicted fault components based on the inventory status of the replacement components of the predicted fault components, or when there is no inventory, determines the maintenance priority of the predicted fault components based on the procurement status of the replacement components of the predicted fault components (for example, procurement lead time). In this way, according to the maintenance management device 10 of the present embodiment, the maintenance management of industrial machinery can be performed in consideration of the inventory status of the replacement components.

[0044] Furthermore, the maintenance management device 10 according to the present embodiment can notify the maintenance priorities of the predicted failure components among the plurality of industrial machines 30 determined by the maintenance priority determination unit 15, can notify the predicted failure components and predicted failure periods among the plurality of industrial machines 30 predicted by the failure prediction unit 14, and can also notify the information of insufficient inventory of replacement components obtained from the inventory management device 20. Thus, even when the replacement components are out of stock and the lead time for purchasing the replacement components is long, the occurrence of failure of the predicted failure components before maintenance can be reduced.

[0045] Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various changes and modifications are possible. For example, in the above embodiments, a robot is exemplified as an industrial machine, but the industrial machine may be in various cases. That is, in the above embodiments, the maintenance management of robot parts is exemplified, but the present invention is not limited to this, and can also be applied to the maintenance management of parts of various industrial machines such as machine tools.

[0046] Explanation of symbols

[0047] 10Maintenance management device

[0048] 11 Operation information acquisition unit

[0049] 12Inventory Information Acquisition Department

[0050] 14Failure prediction department

[0051] 15Maintenance Priority Determination Department

[0052] 16 Storage unit

[0053] 18 Notification Department

[0054] 20Inventory Management Device

[0055] 30Industrial Machinery

[0056] 32 Robot

[0057] 34Robot control device

[0058] 100 production systems.

Claims

1. A maintenance management device for industrial machinery, the maintenance management device managing the maintenance of a plurality of industrial machinery, characterized in that: The maintenance management device comprises: an operation information acquisition unit that acquires operation information of the plurality of industrial machines; a failure prediction unit that predicts a failure prediction component predicted to fail among the plurality of components of the industrial machine and a predicted failure time thereof based on the acquired operation information; an inventory information acquisition unit that acquires inventory information related to inventory and procurement of replacement parts for the plurality of industrial machine parts; as well as A maintenance priority determination unit determines maintenance priorities of the predicted failure components of the plurality of industrial machines based on the predicted failure times of the predicted failure components and the acquired inventory information of the replacement components.

2. The maintenance management device for industrial machinery according to claim 1, characterized in that: The inventory information acquisition unit is notified of the inventory information related to the inventory and procurement of the replacement component that is out of stock or insufficient in stock.

3. The maintenance management device for industrial machinery according to claim 1, characterized in that: The inventory information acquisition unit acquires the inventory information related to the predicted inventory and procurement of the replacement component of the predicted failure component.

4. The maintenance management device for industrial machinery according to any one of claims 1 to 3, characterized in that: The inventory information includes: an inventory status including the inventory quantity of the replacement parts and a procurement status including the procurement lead time of the replacement parts, The maintenance priority determination unit lowers the maintenance priority of the predicted failure component when the replacement component is out of stock and a procurement lead time of the replacement component is longer than a predetermined value.

5. The maintenance management device for industrial machinery according to any one of claims 1 to 3, characterized in that: The operation information includes the accumulated operation time of the plurality of industrial machines. The failure prediction unit predicts the failure prediction component and its failure prediction time based on the accumulated operation time.

6. The maintenance management device for industrial machinery according to any one of claims 1 to 3, characterized in that: The maintenance management device further includes a notification unit that notifies the determined maintenance priority.

7. A production system, characterized in that: have: Multiple industrial machines; The maintenance management device for industrial machinery according to any one of claims 1 to 3; and An inventory management device manages the inventory and procurement of replacement parts for the plurality of industrial machine parts.

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