JP2021060942A - Work management device and work management system - Google Patents

Abstract

To provide a work management device and a work management system that are able to improve the efficiency of work management.SOLUTION: A work management device comprises: an acquisition unit that acquires information about a storage medium, read by a reader that reads, from the storage medium prepared for each of pluralities of states relating to a work machine, information indicating the states; a determination unit that, based on the information acquired by the acquisition unit, determines a current state of the work machine; and an operation control unit that controls an operation of the work machine according to the state determined by the determination unit.SELECTED DRAWING: Figure 5

Description

The present invention relates to a work management device and a work management system.

Conventionally, for example, in the machining work of machine parts, the work management for managing the presence or absence of interruptions and defects during the work is manually performed by the manager who manages the work (handwritten recording, etc.).

In addition, conventionally, a card in which data of a product to be manufactured and data of a worker are stored in an RFID (Radio Frequency IDentifier) tag is prepared respectively, and a worker puts a card for a product and a card for a worker in a work area at the start of work. A technique for collecting data by having it read by a placed communication device has been proposed.

Japanese Patent No. 64087779

However, the conventional technique of manually performing work management has a problem that the burden on the administrator is heavy and the accuracy is insufficient. In addition, although the conventional technology for collecting data using RFID tags can efficiently collect data, it does not consider the work management of the entire factory such as cooperation with machine tools. There is room for further improvement.

The present invention has been made in view of the above, and an object of the present invention is to provide a work management device and a work management system capable of improving the efficiency of work management.

In order to solve the above-mentioned problems and achieve the object, the work management device according to the present invention includes an acquisition unit, a discrimination unit, and an operation control unit. The acquisition unit acquires the information of the storage medium read by the reading device that reads the information indicating the state from the storage media prepared for each of the plurality of states related to the machine tool. The determination unit determines the current state of the machine tool based on the information acquired by the acquisition unit. The motion control unit controls the operation of the machine tool according to the state determined by the discriminating unit.

The work management device according to the present invention can improve the efficiency of work management.

FIG. 1 is a diagram schematically showing an example of a work management system according to an embodiment. FIG. 2 is a perspective view showing an example of the configuration of the reading device according to the embodiment. FIG. 3 is a diagram showing an example of the hardware configuration of the work management device according to the embodiment. FIG. 4 is a diagram showing an example of the data structure of the management table according to the embodiment. FIG. 5 is a diagram showing an example of the functional configuration of the work management device according to the embodiment. FIG. 6 is a diagram showing an example of a work state screen displayed by the display control unit of the embodiment. FIG. 7 is a diagram showing an example of a work result screen displayed by the display control unit of the embodiment. FIG. 8 is a flowchart showing an example of processing executed by the work management device of the embodiment.

Hereinafter, embodiments of the work management device and the work management system according to the present disclosure will be described in detail with reference to the drawings. The present invention is not limited to this embodiment. In addition, the components in the following embodiments include those that can be easily conceived by those skilled in the art, or those that are substantially the same.

FIG. 1 is a diagram schematically showing an example of a work management system to which the work management device according to the embodiment is applied. As shown in FIG. 1, the work management system 1 includes a machine tool 10, a reading device 20, a video creation system 30, a production scheduler 40, a portable device 50, and a work management device 60.

The machine tool 10, the reading device 20, the video creation system 30, and the production scheduler 40 are communicably connected to the work management device 60 via a network N1 such as an intranet. Further, the mobile device 50 is communicably connected to the work management device 60 via an external network N2 such as the Internet or a public network. The number of machine tools 10 and portable devices 50 and the like connected to the networks N1 and N2 is not limited to the example of FIG.

The machine tool 10 is a machine tool for processing parts. One or more machine tools 10 are installed in a building such as a factory and operate under the control of the work management device 60. The machine tool 10 includes an NC (Numerical Control) device 11 such as a PLC (programmable logic controller) and a storage device 12 that stores an NC program related to a component machining operation.

The NC device 11 is a computer provided with a processor such as a CPU (Central Processing Unit), and controls the operation of the machine tool 10 based on an NC program. The storage device 12 stores an NC program related to machining of the part in association with an identifier for identifying the part to be machined (hereinafter, part ID).

FIG. 1 shows an example in which the storage device 12 stores NC programs “P1”, “P2”, and “P3” in association with the three component IDs “001”, “002”, and “003”, respectively. There is.

In each of the NC programs, a series of machining procedures for machining the corresponding parts, a control method of the drive unit, and various parameters are preset. The NC device 11 realizes an environment in which the component can be machined by loading the NC program corresponding to the component to be machined from the storage device 12 in accordance with the instruction from the work management device 60.

The reading device 20 is an RFID reader / writer device capable of reading information from an RFID tag. The reading device 20 is operated by the operator of the machine tool 10 and is prepared for each machine tool 10. For example, the reading device 20 is installed in the vicinity of the machine tool 10. The reading device 20 reads various tag information from the card medium CM to which the RFID tag TG is attached, and transmits the read tag information to the work management device 60. The card medium CM is an example of a storage medium.

FIG. 2 is a perspective view showing an example of the configuration of the reading device 20. As shown in FIG. 2, the housing 21 of the reading device 20 has a stepped shape. Storage portions 22 are provided in multiple stages on the front surface of the housing 21. The storage unit 22 has a box-shaped structure with an open upper surface, and can store the card medium CM in an upright state. FIG. 2 shows an example in which two storage portions 22 are provided on the upper and lower stages of the front surface of the housing 21. In this way, in the reading device 20, by arranging the storage units 22 in multiple stages, it is possible to easily perform the operation of inserting and removing the card medium CM for each storage unit 22.

Of the reading device 20, at least the front surface portion of the storage portion 22 is preferably formed of a light-transmitting material. With such a configuration, the operator who operates the reading device 20 can check the design and the like on the surface of the card medium CM in the state of being stored in the storage unit 22, which is convenient for the operation of inserting and removing the card medium CM. It is possible to improve the sex.

Further, the reading device 20 is provided with an RFID antenna 23 capable of communicating with the RFID tag TG on the back surface or the bottom surface of each storage unit 22. The reading device 20 reads the tag information via the RFID antenna 23 at predetermined time intervals (for example, every 60 seconds). Then, when the reading device 20 reads the tag information from the RFID tag TG of the card medium CM stored in the storage unit 22 at once, the read tag information is used as the state information indicating the working state of the machine tool 10 as the work management device 60. Send to.

The reading device 20 also includes an identifier (device ID) for identifying the machine tool 10 corresponding to its own reading device 20 in the state information and transmits it. Further, the reading device 20 may be configured to transmit the state information including only the device ID even when the tag information cannot be read.

By the way, in the reading device 20 of FIG. 2, the storage unit 22 is classified according to the characteristics and type of the card medium CM. Specifically, the storage unit 22 is divided into an ID card storage unit 22a, a manufacturing order storage unit 22b, a state storage unit 22c, and a defect storage unit 22d. Each storage unit 22 stores a type of card medium CM corresponding to the classification.

Here, the ID card storage unit 22a stores a card medium CM (hereinafter, also referred to as an ID card) for identifying an operator. An identifier (worker ID) for identifying a worker is stored as tag information in the RFID tag TG of the ID card. The ID card is distributed in advance to, for example, each worker who operates the machine tool 10.

A card medium CM (hereinafter, also referred to as a processed parts card) for identifying a part to be processed is stored in the manufacturing order storage unit 22b. The RFID tag TG of the processed parts card stores the part ID as tag information. The processed parts card is prepared in advance for each part to be processed.

The state storage unit 22c stores a card medium CM for instructing the operation or state of the machine tool 10. For example, the state storage unit 22c stores a card medium CM (hereinafter, also referred to as a work start card) for instructing the start of work. Information such as a code indicating the start of work is stored as tag information in the RFID tag TG of the work start card. Further, the state storage unit 22c stores a card medium CM (hereinafter, also referred to as a work interruption card) for instructing the interruption of work. In the RFID tag TG of the work interruption card, information such as a code indicating the interruption of work is stored as tag information. The work start card and the work interruption card are prepared in advance, for example, in association with the reading device 20.

The defect storage unit 22d stores a card medium CM (hereinafter, also referred to as a suspension reason card) for instructing the reason why the work is interrupted. Information such as a code indicating the reason for interruption is stored as tag information in the RFID tag TG of the reason for interruption card. Such a suspension reason card is prepared for each type of suspension reason such as a material defect or an assembly defect. Further, the interruption reason card is prepared in advance, for example, in association with the reading device 20.

In the reading device 20 having the above-described configuration, the operator of the machine tool 10 performs the following operations on the reading device 20 when starting the work. First, the worker stores his / her own ID card in the ID card storage unit 22a. Then, the worker stores the processed parts card instructing the parts to be processed in the manufacturing order storage unit 22b, and stores the work start card in the state storage unit 22c. By such an operation, the reading device 20 reads the tag information from each of the ID card, the processed parts card, and the work start card. Then, the reading device 20 transmits the read tag information together with the device ID as state information to the work management device 60.

Further, when the worker of the machine tool 10 finishes the work by the machine tool 10, the operator performs the following operations on the reading device 20. First, the operator removes the processed parts card and the work start card stored in each of the manufacturing order storage unit 22b and the state storage unit 22c. Further, when the worker leaves the machine tool 10, he / she removes his / her own ID card from the ID card storage unit 22a. By such an operation, the reading device 20 transmits the state information including the worker ID and the device ID or the state information including only the device ID to the work management device 60.

Further, when the worker of the machine tool 10 interrupts the work of the machine tool 10 due to the interruption reason such as a material defect or an assembly defect, the operator performs the following operation on the reading device 20. First, the worker stores the work interruption card in the state storage unit 22c in a form of replacing the work start card. Then, the operator stores the interruption reason card indicating the corresponding interruption reason in the defect storage unit 22d. By such an operation, the reading device 20 reads the tag information from each of the ID card, the processed parts card, the work interruption card, and the reason for interruption card. Then, the reading device 20 transmits the read tag information together with the device ID as state information to the work management device 60.

Further, when the operator of the machine tool 10 resumes the work by eliminating the reason for interruption, the operator performs the following operations on the reading device 20. First, the worker stores the work start card in the state storage unit 22c in a form of replacing the work interruption card. Then, the operator removes the interruption reason card from the defect storage unit 22d. By such an operation, the reading device 20 reads the tag information from each of the ID card, the processed parts card, and the work start card. Then, the reading device 20 transmits the read tag information group together with the device ID as state information to the work management device 60.

The reading device 20 is not limited to the configuration shown in FIG. For example, the reading device 20 may be configured to include a single storage unit 22. In this case, the operator of the machine tool 10 may store a plurality of card medium CMs such as an ID card, a processing member card, and a work start card in the storage unit 22 provided in the reading device 20. Further, in FIG. 2, the configuration in which the RFID antenna 23 is arranged in each of the storage portions 22 has been described, but the arrangement position, the number, and the size of the RFID antenna 23 are not limited to the configuration in FIG. For example, one large RFID antenna 23 may be arranged on the back surface of the reading device 20, and the RFID antenna 23 may collectively read the RFID tag TG of the card medium CM stored in each storage unit 22.

Returning to FIG. 1, the video creation system 30 includes a surveillance camera 31 and a video creation device 32. The surveillance camera 31 is an example of an imaging device. One or a plurality of surveillance cameras 31 are provided for each machine tool 10. The surveillance camera 31 has an image sensor such as a CCD (Charge-Coupled Device) image sensor or a CMOS (Complementary Metal-Oxide Semiconductor) image sensor. Generate. The part of the machine tool 10 imaged by the surveillance camera 31 is not particularly limited, but it is preferable to image a part where the working state of the machine tool 10 can be visually recognized, such as a drive unit and an indicator of the machine tool 10.

The video creation device 32 is realized by a server device such as a recording server or a video editing server, for example. The video creation device 32 is connected to each of the surveillance cameras 31 by wire or wirelessly, and collects video data captured by each of the surveillance cameras 31. Specifically, the video creation device 32 stores (records) the video data captured by each of the surveillance cameras 31 in association with the device ID of the machine tool 10 to be imaged by the surveillance camera 31.

Further, the video creation device 32 transfers the video data captured by the surveillance camera 31 to the work management device 60 under the control of the work management device 60. Specifically, when the device ID is instructed by the work management device 60, the video creation device 32 transfers the video data corresponding to the device ID to the work management device 60. Further, the video creation device 32 executes a process of superimposing the notification information such as the reason for interruption instructed by the work management device 60 on the video data.

In the present embodiment, it is assumed that the surveillance camera 31 is constantly performing imaging, but the image creation device 32 may be configured to control the on / off of the imaging of the surveillance camera 31. In this case, for example, the video creation device 32 may control the monitoring camera 31 that captures the machine tool 10 of the device ID to be turned on when the device ID is instructed by the work management device 60.

Further, the video data to be transferred from the video creation device 32 to the work management device 60 may be a data file recorded by the video creation device 32 or streaming data representing a live video.

The production scheduler 40 is a server device such as a database server that manages the production schedule of each component. Specifically, the production scheduler 40 stores each of the production schedules having data items such as the part ID, the number of production pieces, the delivery date, and the status of the parts to be produced (processed) in association with the execution order in which the production is performed. And manage. Here, the execution order is automatically or manually set based on, for example, the delivery date of each part, the assembly order, and the like. The machined parts card described above is issued based on the execution order of this production schedule. The processed parts card may be issued by the production scheduler 40 using an RFID reader / writer device or the like (not shown).

Further, the production scheduler 40 executes a process for managing the production status of each component in cooperation with the work management device 60. Specifically, the production scheduler 40 sets the status of the production schedule including the part ID to "in production" or "end of production" based on the work state of each part (part ID) notified from the work management device 60. , "Work interruption", etc.

Further, the production scheduler 40 displays a screen showing the production status of each part in a visually easy-to-understand manner on the display device provided in the production scheduler 40 by color-coding the production status of each component based on the status value or the like. Perform the process of causing. The operator who operates the production scheduler 40 can check the production status of each part and adjust the production schedule while looking at the displayed screen.

The mobile device 50 is, for example, a portable information terminal owned by a factory manager. The mobile device 50 is realized by, for example, a smartphone, a tablet terminal, or the like.

The mobile device 50 exchanges various data with and from the work management device 60 via the network N2. Specifically, the portable device 50 receives notification information or the like indicating the state of the machine tool 10 from the work management device 60.

The work management device 60 manages the entire work management system 1 in an integrated manner by cooperating with other devices constituting the work management system 1. For example, the work management device 60 is realized by a server device such as a database server or an application server.

FIG. 3 is a diagram showing an example of the hardware configuration of the work management device 60. As shown in FIG. 3, the work management device 60 includes a CPU (Central Processing Unit) 61, a ROM (Read Only Memory) 62, a RAM (Random Access Memory) 63, a storage unit 64, an operation unit 65, a display unit 66, and A communication unit 67 is provided.

The CPU 61 is an example of a processor, and controls each part of the work management device 60 in an integrated manner by executing a program stored in the ROM 62 or the storage unit 64. The ROM 62 stores a program or the like executed by the CPU 61. The RAM 63 is used by the CPU 61 as a work area for temporarily storing data and the like necessary for executing a program.

The storage unit 64 is a storage device such as an HDD (Hard Disk Drive) or an SSD (Solid State Drive). The storage unit 64 stores a program that can be executed by the CPU 61 and various types of information. Further, the storage unit 64 stores the management table T1 for managing the working state of each machine tool 10.

Here, FIG. 4 is a diagram showing an example of the data structure of the management table T1. As shown in FIG. 4, the management table T1 stores the device ID, the worker ID, the component ID, and the work state in association with each other. The work state has, for example, data items such as "work start date and time", "work end date and time", "interruption date and time", "interruption reason", and "restart date and time". Here, various working states of the machine tool 10 are represented by the registration status for each data item.

For example, when the date and time information is registered only in the "work start date and time", the working state of the machine tool 10 means that the work is started at the work start date and time and is still in the working state. Further, when the date and time information is registered in the "work start date and time" and the "work end date and time", the work state of the machine tool 10 is such that the work is performed from the work start date and time to the work end date and time, and the work is completed. It means that it is in a dormant state. Further, when the date and time information is registered in the "suspension date and time" and the "restart date and time" is blank, the work state of the machine tool 10 means that the work was interrupted at the interruption date and time and is still in the suspended state. Means. Further, when the date and time information is registered in the "suspension date and time" and the "restart date and time" and the "work end date and time" is blank, the work state of the machine tool 10 is such that the work is interrupted from the suspension date and time to the restart date and time. It means that it is currently in a restored state.

Furthermore, due to the relationship between the date and time information registered in the "work start date and time", "work end date and time", "interruption date and time", and "restart date and time", the time required from the start to the end of the work (work time) and , The time required from the interruption of the work to the restart (interruption time), the time from the completion of the work to the start of the next work (pause time), and the like can be derived.

In this way, the management table T1 records the history of the working state of each machine tool 10. In the following, in the management table T1, a series of device IDs, worker IDs, component IDs, and work state data groups, that is, line-based data groups are also referred to as "data entries".

The data structure of the management table T1 is not limited to the example of FIG. For example, the set of "suspension date / time", "suspension reason", and "restart date / time" may be a variable data item so that a plurality of sets can be registered in the same data entry. Further, for example, the management table T1 may include data items for registering the start and end dates and times of the non-working time so that the down time of the machine tool 10 can be explicitly recorded.

Returning to FIG. 3, the operation unit 65 receives an input operation from the operator. For example, the operation unit 65 is realized by a switch button, a mouse, a keyboard, or the like. The display unit 66 is an example of a display device. The display unit 66 displays various information under the control of the CPU 61. For example, the display unit 66 is realized by a liquid crystal monitor, a CRT (Cathode Ray Tube) monitor, or the like. The operation unit 65 and the display unit 66 may have a touch panel configuration.

The communication unit 67 is a communication interface that can be connected to the network N1 and the network N2. The communication unit 67 exchanges various data between the network N1 and the external device connected to the network N2 under the control of the CPU 61.

Further, the work management device 60 has the functional configuration shown in FIG. Here, FIG. 5 is a diagram showing an example of the functional configuration of the work management device 60.

As shown in FIG. 5, the work management device 60 includes an acquisition unit 611, a state management unit 612, an operation control unit 613, a display control unit 614, a notification unit 615, and a parts management unit 616 as functional units. A part or all of these functional units may have a software configuration realized by cooperation between a processor (CPU 61) and various programs stored in a memory (storage unit 64), or may be realized by a dedicated circuit or the like. It may be a hardware configuration.

The acquisition unit 611 is an example of the acquisition unit. The acquisition unit 611 acquires the state information transmitted from each of the reading devices 20 in cooperation with the communication unit 67. Specifically, the acquisition unit 611 acquires the state information related to the reading each time the reading device 20 reads. As described above, the state information acquired by the acquisition unit 611 includes various tag information and the device ID of the machine tool 10 related to the reading device 20 of the transmission source.

The state management unit 612 is an example of a discrimination unit and a recording unit. The state management unit 612 monitors the state information of each machine tool 10 acquired by the acquisition unit 611, and when it detects a change in the state information, determines the working state corresponding to the detection result. Further, the state management unit 612 records the determined work state in the management table T1.

For example, when the state management unit 612 detects that a new tag information indicating "work start" appears in the state information, it determines that the work has started and executes the following processing. First, the state management unit 612 registers the device ID, the worker ID, and the component ID included in the state information in the management table T1 as new data entries. Then, the state management unit 612 registers the date and time information indicating the date and time when the state information was acquired in the "work start date and time" of the newly registered data entry.

Further, for example, the state management unit 612 has lost the tag information of "processed parts" and "work start" for the state information including the same device ID as the data entry in which the date and time information is registered in the "work start date and time". Is detected, it is determined that the work has been completed. In this case, the state management unit 612 registers the date and time information indicating the date and time when the state information was acquired in the "work completion date and time" of the corresponding data entry. The state management unit 612 determines that the same device ID is in a hibernation state from the time when the "work completion date and time" is registered until the next "work start date and time" is registered.

Further, the state management unit 612 indicates "work interruption" and "reason for interruption" for the state information including the same device ID, worker ID and part ID as the data entry in which the date and time information is registered in the "work start date and time". When it detects that new tag information has appeared, it is determined that the work has been interrupted due to the "reason for interruption". In this case, the state management unit 612 registers the date and time information indicating the date and time when the state information was acquired in the "interruption date and time" of the corresponding data entry, and also registers the "interruption reason" in the "interruption reason" of the data entry. Register the content of the tag information of.

In addition, the state management unit 612 newly appears tag information indicating "work start" for the state information including the same device ID, worker ID, and component ID as the data entry in which the date and time information is registered in the "suspension date and time". When it detects that the work has been done, it is determined that the work has resumed. In this case, the state management unit 612 registers the date and time information indicating the date and time when the state information was acquired in the "restart date and time" of the corresponding data entry.

By the process of the state management unit 612 described above, data entries indicating the past and present working states of each machine tool 10 are sequentially recorded in the management table T1. The state management unit 612 may also record a state other than the above-mentioned working state in the management table T1. For example, in order to record the hibernation state of the machine tool 10, the state management unit 612 sets the hibernation start date and time when the acquisition of the state information including only the "device ID" and the "worker ID" or only the "device ID" is started. , The process of registering the hibernation end date and time when the acquisition of the state information is completed in the management table T1 may be performed.

The motion control unit 613 is an example of the motion control unit. The operation control unit 613 controls the operation of the machine tool 10 based on the working state of each machine tool 10 determined by the state management unit 612. Specifically, the operation control unit 613 instructs the machine tool 10 to load and unload the NC program according to the determination of the work start and work end by the state management unit 612.

For example, when the operation control unit 613 registers a data entry indicating the start of work in the management table T1 by the state management unit 612, the operation control unit 613 addresses the machine tool 10 corresponding to the "equipment ID" included in the data entry. A load instruction of the NC program including the value of "part ID" of the same data entry is transmitted.

In the NC device 11 of the machine tool 10 that has received the load instruction, by loading the NC program of the instructed "part ID" from the storage device 12, an environment in which the machining work of the part corresponding to the part ID can be executed can be performed. Realize. In this case, the worker of the machine tool 10 can start the machining work of the parts by performing the work start operation on the machine tool 10.

Further, for example, when the operation control unit 613 registers the data entry indicating the end of the work in the management table T1 by the state management unit 612, the operation control unit 613 is addressed to the machine tool 10 corresponding to the "equipment ID" included in the data entry. Is sent an NC program unload instruction.

The NC device 11 of the machine tool 10 that has received the unload instruction makes it impossible to execute the machining work by the machine tool 10 by unloading the NC program. Therefore, the motion control unit 613 can prevent the occurrence of malfunction in the machine tool 10 for which the work has been completed.

In the present embodiment, the NC program is not loaded / unloaded in the case of interruption and re-execution of the work, but the NC program is loaded / unloaded in the same manner as at the start and end of the work. May be in the form of instructing. Further, in the present embodiment, a plurality of NC programs are switched and loaded, but when the machine tool 10 holds only a single NC program, the operation control unit 613 considers the part ID. Instead, you may instruct to load the NC program.

The display control unit 614 is an example of the display control unit. The display control unit 614 generates various screens related to the working state of each machine tool 10 based on the determination result of the state management unit 612 or the data entry of each machine tool 10 registered in the management table T1, and the display unit 614 generates various screens. It is displayed on 66.

As an example, the display control unit 614 generates a screen (hereinafter, also referred to as a work state screen) showing the current work state of each machine tool 10 based on the determination result of the state management unit 612, and displays it on the display unit 66. Let me.

FIG. 6 is a diagram showing an example of a work state screen displayed by the display control unit 614. As shown in FIG. 6, on the work state screen G1, the current work state of the machine tool 10 is displayed in association with each machine tool 10. For example, the work status screen G1 represents the work status of four machine tools 10 having device IDs "M1" to "M4", and the machine tools 10 having device IDs "M1" and "M4" are "working". "Medium" indicates that the machine tool 10 having the device ID "M2" is in the "pause" state, and the machine tool 10 having the device ID "M3" is in the "work interrupted" state.

As a result, the operator of the work management device 60 can easily confirm what kind of work state each machine tool 10 is currently in by looking at the work state screen G1 displayed on the display unit 66. Therefore, the work management device 60 can improve the convenience related to the work management of the machine tool 10.

Although FIG. 6 shows an example of displaying the working state of each machine tool 10, the display form is not limited to this. For example, information such as a worker ID and a component ID may be displayed in association with the device ID. As a result, the operator of the work management device 60 can easily confirm the operator who operates each machine tool 10 and the parts to be machined by looking at the work state screen G1.

Further, as another example, the display control unit 614 is a screen showing the work results of each machine tool 10 within a predetermined period based on the current and past data entries of each machine tool 10 registered in the management table T1. (Hereinafter, also referred to as a work result screen) is generated and displayed on the display unit 66.

Specifically, the display control unit 614 reads data entries for a preset period or a period specified via the operation unit 65 from the management table T1, and the work time, interruption time, and pause time within that period. Generate a screen showing the achievements such as.

FIG. 7 is a diagram showing an example of a work record screen displayed by the display control unit 614. The work record screen G2 of FIG. 7 is a graph showing the work record of each machine tool 10 of the device IDs “M1” to “M4” on a specific day during the target period. Here, the graph of each machine tool 10 shows the work results from 0:00 to 24:00 on the date designated as the target period in chronological order. Specifically, sections in which the same working state continues are identifiable by using hatches, display colors, and the like corresponding to the operating state. The blank (white) section is the section where the work state is "working", the shaded section from the upper right to the lower left is the section where the work state is "pause", and the pear-skin pattern section is the section where the work state is "interrupted". Means the section of.

As a result, the operator of the work management device 60 can easily confirm the work record of each machine tool 10 in the target period by looking at the work record screen G2. Further, the operator of the work management device 60 can easily grasp the operating rate of each machine tool 10 and the occurrence status of interruption from the size and ratio of various sections occupied in the graph. Therefore, the work management device 60 can improve the convenience related to the work management of the machine tool 10.

The display form of the work result screen G2 is not limited to the example shown in the figure. For example, the display control unit 614 may statistically display the work execution system of each machine tool 10 by using a display form such as a pie chart.

Further, in the present embodiment, an example in which the screen generated by the display control unit 614 is displayed on the display unit 66 of the work management device 60 has been described, but the present invention is not limited to this. For example, the display control unit 614 may display the above-mentioned work state screen G1 and work result screen G2 on the display device included in the mobile device 50 by cooperating with the notification unit 615 described later.

The notification unit 615 notifies the mobile device 50. Specifically, when the state management unit 612 determines that the working state of the machine tool 10 is interrupted, the notification unit 615 performs a process for notifying the portable device 50 of information about the machine tool 10 in which the interruption has occurred. Execute.

For example, when the data entry indicating the interruption of work is registered in the management table T1, the notification unit 615 includes the "device ID", "worker ID", "part ID", and "reason for interruption" included in the data entry. Information such as "" is transmitted to the mobile device 50 as notification information. As a result, the user of the portable device 50 can confirm the machine tool 10 in which the interruption has occurred, the reason for the interruption, and the like based on the notification information transmitted from the work management device 60.

The information transmitted (notified) by the notification unit 615 to the mobile device 50 is not limited to the above-mentioned notification information. For example, the notification unit 615 may transmit (transfer) the video data of the machine tool 10 in which the interruption has occurred to the portable device 50. Hereinafter, an operation example of the notification unit 615 when transmitting video data will be described.

First, when the data entry indicating the interruption of work is registered in the management table T1, the notification unit 615 corresponds to the device ID by instructing the video creation device 32 of the device ID included in the data entry. The video data is transferred to the work management device 60. Further, the notification unit 615 controls the video creation device 32 to superimpose a character string indicating the notification information (interruption reason, etc.) included in the corresponding data entry on the video data to be transferred. Then, the notification unit 615 transmits the video data transferred from the video creation device 32 to the portable device 50 in a reproducible form.

As a result, the user of the portable device 50 can confirm the state of the machine tool 10 in which the interruption has occurred by viewing the video data provided by the work management device 60 (video creation system 30). In addition, the user of the mobile device 50 can easily confirm the reason for the interruption or the like by looking at the character string superimposed on the video data. Therefore, the work management device 60 can improve the convenience related to the maintenance management of the machine tool 10.

In the present embodiment, the video data captured by the video creation system 30 is transmitted to the portable device 50 via the work management device 60, but the present invention is not limited to this. For example, when the video creation system 30 and the portable device 50 can directly exchange data, the work management device 60 may directly transfer the video data from the video creation system 30 to the mobile device 50.

The parts management unit 616 executes a process for managing the production status of each part in cooperation with the production scheduler 40.

Specifically, when the work state is determined by the state management unit 612, the parts management unit 616 sets the determined work state and the part ID included in the data entry corresponding to the work state to the production scheduler 40. By notifying the above, the status of the production schedule related to the part ID is changed.

For example, when the data entry indicating the end of work is registered in the management table T1, the parts management unit 616 notifies the production scheduler 40 of the device ID included in the data entry together with information such as a code indicating the end of work. To do. In this case, the production scheduler 40 searches for a production schedule including the notified part ID, and sets the status included in the production schedule to "production completed".

Further, for example, when a data entry indicating work interruption is registered in the management table T1, the parts management unit 616 sets the device ID included in the data entry together with information such as a code indicating work interruption to the production scheduler 40. Notify to. In this case, the production scheduler 40 searches for a production schedule including the notified part ID, and sets the status included in the production schedule to "production interruption".

As a result, the work management device 60 can update the production status of each component to the latest state, so that the production status of each component can be efficiently managed.

Further, the parts management unit 616 may perform rescheduling to change the execution order of the production schedule according to a work state such as interruption. For example, when a delay in the execution order is predicted due to a work interruption, the production schedule of the interrupted part may be postponed so that the parts are produced first. The rescheduling method is not particularly limited, and a known technique may be used.

As a result, the work management device 60 can reschedul the execution order of the production schedule of each part according to the work state of each machine tool 10, so that the parts can be produced efficiently.

Hereinafter, an operation example of the work management device 60 will be described with reference to FIG. FIG. 8 is a flowchart showing an example of the process executed by the work management device 60.

First, the acquisition unit 611 acquires state information from each of the readers 20 (step S11). Next, the state management unit 612 determines whether or not the content of the status information acquired in step S11 has changed from the content of the previously acquired status information for each device ID included in the status information (step S12). ). Here, if no change is detected (step S12; No), the state management unit 612 returns the process to step S11.

When a change is detected in step S12 (step S12; Yes), the state management unit 612 determines the working state of the machine tool 10 based on the changed tag information content (step S13). Next, the state management unit 612 registers (records) the determined work state in the management table T1 (step S14).

The display control unit 614 causes the display unit 66 to display a work state screen showing the current work state of each machine tool 10 based on the determination result in step S13 (step S15). Further, the parts management unit 616 updates the production schedule (status) of the parts (parts ID) machined (produced) by the machine tool 10 whose working state has been updated by cooperating with the production scheduler 40 (step). S16).

Subsequently, the motion control unit 613 determines whether or not any of the machine tools 10 whose working state is determined in step S13 has a working state indicating "work start" (step S17). Here, when the machine tool 10 whose working state is "work start" does not exist (step S17; No), the operation control unit 613 shifts to step S19.

Further, in step S17, when there is a machine tool 10 whose work state is "work start" (step S17; Yes), the operation control unit 613 sets the machine tool 10 to be a "part ID" to be machined. The load of the corresponding NC program is instructed (step S18), and the process proceeds to step S19.

Subsequently, the motion control unit 613 determines whether or not any of the machine tools 10 whose working state is determined in step S13 has a working state indicating "work completed" (step S19). Here, when the machine tool 10 whose work state is "finished work" does not exist (step S19; No), the operation control unit 613 shifts to step S21.

Further, in step S19, when there is a machine tool 10 whose work state is "work completed" (step S19; Yes), the motion control unit 613 instructs the corresponding machine tool 10 to unload the NC program. (Step S20), the process proceeds to step S21.

Subsequently, the notification unit 615 determines whether or not any of the machine tools 10 whose working state is determined in step S13 has a working state indicating "work interruption" (step S21). Here, when the machine tool 10 whose work state is "work interrupted" does not exist (step S21; No), the notification unit 615 shifts to step S25.

Further, in step S21, when there is a machine tool 10 whose work state is "work interrupted" (step S21; Yes), the notification unit 615 has a device ID and a worker ID based on the data entry of the corresponding machine tool 10. , Part ID, reason for interruption, and the like are transmitted to the mobile device 50 (step S22).

Next, the notification unit 615 controls the video creation device 32, and superimposes a character string indicating the reason for interruption or the like on the video data of the surveillance camera 31 that captures the image of the machine tool 10 whose work has been interrupted (step S23). Then, the notification unit 615 transfers the video data on which the character string is superimposed to the mobile device 50 (step S24), and proceeds to step S25.

Subsequently, the notification unit 615 determines whether or not any of the machine tools 10 whose working state is determined in step S13 has a working state indicating "work restart" (step S25). Here, when the machine tool 10 whose work state is "restart work" does not exist (step S25; No), the notification unit 615 returns the process to step S11.

Further, in step S25, when there is a machine tool 10 whose work state is "restart work" (step S25; Yes), the notification unit 615 controls the video creation device 32 to restart the work. (Step S26) is completed, and the process returns to step S11.

As described above, in the work management device 60 according to the present embodiment, the operator of the machine tool 10 reads the tag information indicating the working state of the machine tool 10 from the card medium CM. Acquires the tag information (state information) of the read card medium CM. Then, the work management device 60 determines the current working state of the machine tool 10 based on the acquired state information, and controls the operation of the machine tool 10 according to the determined working state. As a result, the work management device 60 can control the operation of the machine tool 10 in conjunction with the reading operation of the card medium CM performed by the operator via the reading device 20, and is therefore executed by the machine tool 10. Processing work can be centrally managed. Therefore, by using the work management device 60, the work management of the entire factory can be efficiently performed.

Further, the work management device 60 determines the state of the machine tool 10 when the content of the state information acquired by the acquisition unit 611 changes. As a result, the work management device 60 can continuously execute the operation of the machine tool 10 and the like while the content of the state information does not change, and the operation of the machine tool 10 is immediately performed according to the change of the state information. Can be controlled to.

Further, when the determined work state of the machine tool 10 indicates the start of work, the work management device 60 causes the machine tool 10 to load the NC program related to the processing of the article instructed by the state information. As a result, the work management device 60 can provide the machine tool 10 with an execution environment capable of processing the instructed article, and can prevent a situation in which an erroneous NC program is loaded.

Further, the work management device 60 causes the machine tool 10 to unload the NC program being loaded when the determined work state of the machine tool 10 indicates the end of the work. As a result, the work management device 60 can prevent the occurrence of malfunctions based on the NC program in the machine tool 10 for which the work has been completed.

Further, when the work state of the determined machine tool 10 indicates the interruption of the work, the work management device 60 transmits the notification information such as the device ID and the reason for the interruption to the mobile device 50 to notify that the interruption of the work has occurred. To do. As a result, the work management device 60 can notify the user of the mobile device 50 that the work is interrupted, the reason for the interruption, and the like, so that the convenience of the user when the interruption occurs can be improved.

Further, when the work state of the discriminated machine tool 10 indicates an interruption of work, the work management device 60 transmits (transfers) the video data of the surveillance camera 31 that captures the image of the machine tool 10 to the portable device 50. As a result, the work management device 60 allows the user of the portable device 50 to check the current state of the machine tool 10, so that the convenience of the user when an interruption occurs can be improved.

Further, the work management device 60 transmits (transfers) the video data to the mobile device 50 in a state where the notification information such as the reason for interruption is superimposed on the video data. As a result, the work management device 60 can present the notification information such as the reason for interruption to the user of the mobile device 50 via the video data, so that the convenience of the user when the interruption occurs can be improved.

Further, the work management device 60 causes the display unit 66 to display a work state screen G1 showing the current work state of each machine tool 10. As a result, the work management device 60 can present the current work state of each machine tool 10 to the operator of the work management device 60, so that the convenience related to the work management of the machine tool 10 can be improved.

Further, the work management device 60 records the history of the work state of each machine tool 10 in the management table T1, and based on the history of the work state recorded in the management table T1, of each machine tool 10 in a predetermined period. The work result screen G2 showing the work result is displayed on the display unit 66. As a result, the work management device 60 can present the work results of each machine tool 10 in a predetermined period to the operator of the work management device 60, so that the convenience related to the work management of the machine tool 10 can be improved. ..

The above-described embodiment can be appropriately modified and implemented by changing a part of the configuration or function of the work management device 60. Therefore, in the following, some modifications according to the above-described embodiment will be described. In the following, points different from the above-described embodiment will be mainly described, and detailed description of points common to the contents already described will be omitted. Further, the modifications described below may be carried out individually or in combination as appropriate.

[Modification 1]
In the above-described embodiment, the video creation device 32 and the production scheduler 40 are independent devices, but the configuration is not limited to this, and the work management device 60 may be configured to include the functions of the video creation device 32 or the production scheduler 40. .. As a result, the work management device 60 can centrally perform the work management of the machine tool 10 and the production control of the article.

Further, in the above-described embodiment, the work management device 60 is a single device, but the present invention is not limited to this, and it may be realized by a plurality of computer devices by using cloud computing or the like.

[Modification 2]
In the above-described embodiment, the machine tool 10 is configured to hold the NC program in advance, but is not limited to this configuration. For example, the work management device 60 may hold an NC program for each part and each machine tool 10. In this case, the operation control unit 613 instructs the loading of the NC program by transmitting the NC program corresponding to the device ID and the component ID to the machine tool 10 of the device ID.

As a result, the work management device 60 can centrally manage the NC program used in the machine tool 10, so that the work related to the replacement or modification of the NC program can be efficiently performed.

Although the embodiments and modifications of the present invention have been described above, these embodiments and modifications are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, as well as in the scope of the invention described in the claims and the equivalent scope thereof.

1 ... Work management system, 10 ... Machine tool, 20 ... Reader, 30 ... Video creation system, 31 ... Surveillance camera, 32 ... Video creation device, 40 ... Production scheduler, 50 ... Portable device, 60 ... Work management device, 611 ... Acquisition unit, 612 ... Status management unit, 613 ... Operation control unit, 614 ... Display control unit, 615 ... Notification unit, 616 ... Parts management unit

Claims (11)

An acquisition unit that acquires information on the storage medium, which is read by a reading device that reads information indicating the state from storage media prepared for each of a plurality of states related to the machine tool.
Based on the information acquired by the acquisition unit, a determination unit that determines the current state of the machine tool, and a determination unit.
An operation control unit that controls the operation of the machine tool according to the state determined by the discrimination unit, and
Work management device equipped with. The acquisition unit acquires the information read by the reading device at predetermined time intervals each time.
The work management device according to claim 1, wherein the discrimination unit determines the state of the machine tool when the content of the information acquired by the acquisition unit changes. The work management device according to claim 1 or 2, wherein the motion control unit loads the machine tool with a program for operating the machine tool when the state of the machine tool indicates the start of work. The work management device according to claim 3, wherein the motion control unit loads the program related to processing of the parts into the machine tool based on the information acquired by the acquisition unit regarding the parts to be machined. The work management device according to claim 3 or 4, wherein the motion control unit unloads the loaded program to the machine tool when the state of the machine tool indicates the end of work. The work management device according to any one of claims 1 to 5, further comprising a notification unit that transmits notification information to an external device when the state of the machine tool indicates interruption of work. The work management device according to claim 6, wherein the notification unit transmits video data of an imaging device that images the machine tool to the external device when the state of the machine tool indicates interruption of work. The work management device according to claim 7, wherein the notification unit superimposes the notification information on the video data and transmits the notification information to the external device. The work management device according to claim 1, further comprising a display control unit for displaying a screen showing the state of the machine tool determined by the discrimination unit on the display device. A recording unit for recording the history of the state of the machine tool determined by the discriminating unit is further provided.
The work management device according to claim 9, wherein the display control unit causes the display device to display a screen showing the work results of the machine tool in a predetermined period based on the history of the state of the machine tool. A work management system having a reading device and a work management device.
The reading device reads information indicating the state from storage media prepared for each of a plurality of states related to the machine tool, and reads the information indicating the state.
The work management device is
An acquisition unit that acquires information read by the reading device, and
Based on the information acquired by the acquisition unit, a determination unit that determines the current state of the machine tool, and a determination unit.
A work management system including an operation control unit that controls the operation of the machine tool according to a state determined by the determination unit.

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