JP2020067841A - Machine operation information providing system, on-premises server, and machine operation information providing method - Google Patents

Abstract

To check the operating status of a machine tool even at a remote location outside a factory while reducing the risk of leaking highly confidential information stored in the machine tool.SOLUTION: With an on-premises server 200 connected to a machine tool 100 via an in-house network 1001, and a cloud server 300 connected to the on-premises server 200 via an Internet 1002, the on-premises server 200 acquires machine operation information from the machine tool 100 and transmits it to the cloud server 300 by e-mail, and the cloud server 300 executes predetermined application processing on the machine operation information acquired by e-mail to prevent the machine tool 100 from directly connecting to the Internet 1002, thus making it possible to prevent unauthorized access to intrude into the machine tool 100 from the outside via the Internet 1002.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a machine operation information providing system, an on-premises server, and a machine operation information providing method, and more particularly to a system for providing machine operation information indicating the operation status of a machine tool, an on-premises server used for the system, and a machine operation information providing method. It is about.

  BACKGROUND ART Conventionally, there is known a system that monitors the operating status of a machine tool and provides information regarding the operating status (for example, see Patent Document 1). In the monitoring system described in Patent Document 1, a numerical control device (NC device) for controlling a machine tool is connected to a personal computer via a network, and the NC device indicates the operating status of the machine tool (machining, stop, alarm generation). It is configured to monitor and send its operating status data to a personal computer. Further, when the operator inputs the data of the cause of the stop when the machine tool is stopped and sends it to the personal computer, the operator operates the key input section of the operation panel of the NC device to display the data on the display section. The selection screen is displayed and the cause of the stop can be selected by key operation.

  Although it is not specified what the network described in Patent Document 1 is, it is assumed that the network is an in-house LAN (Local Area Network) from the form of connecting a personal computer. On the other hand, there is a demand to know the operating status of machine tools even at remote locations outside the factory. For example, factory managers and managers often use the operating information of machine tools for management, and there are many demands for grasping the operating time, downtime, stop history, etc. of the machine tools.

  In order to meet such demands, there is also provided a monitoring system configured to connect a machine tool to the Internet and send operating status data to a cloud server on the Internet. When transmitting data from a machine tool to a cloud server, it is possible to confirm the operating status of the machine tool at a remote location by accessing the cloud server from a remote personal computer or the like using the Internet.

JP 2004-54701 A

  However, when the machine tool is connected to the Internet, there is a possibility of unauthorized access to the machine tool from the outside, which is a security concern. The machine tool stores so-called know-how information that the company wants to conceal, such as the name of the machined part, the machining program, and various operation parameters. Therefore, there is a strong demand for securing strong security. However, when the machine tool is connected to the Internet, there is a problem that such confidential information may be leaked by unauthorized access from the outside.

  The present invention has been made to solve such a problem, and reduces the possibility that highly confidential information stored in a machine tool will be leaked due to unauthorized access from the outside. The purpose is to be able to check the operating status of the remote location outside the factory.

  In order to solve the above-described problems, in the present invention, an on-premises server is connected to a machine tool via a first network, and a cloud server is connected to an on-premises server via a second network. The on-premises server acquires the machine operation information of the machine tool and sends it by e-mail to the mail address of the cloud server, and the cloud server acquires the machine operation information of the machine tool by receiving the e-mail, A predetermined application process is executed on the acquired machine operation information.

  According to the present invention configured as described above, the machine tool is not directly connected to the cloud server via the second network, but is connected to the on-premises server via the first network. It is possible to prevent unauthorized access from the outside by invading the machine tool via the second network. The machine operation information of the machine tool is sent from the on-premises server to the cloud server via the second network, but since it is sent using email, the on-premises server was always connected to the second network. It is not in a state, and it is possible to prevent intrusion to the on-premises server. As a result, according to the present invention, the operating status of the machine tool can be remotely monitored outside the factory through the cloud server while reducing the risk that the highly confidential information stored in the machine tool will be leaked due to unauthorized access from the outside. You will be able to check it on the ground.

It is a figure which shows the function structural example of the machine operation information provision system by 1st Embodiment. It is a figure which shows the hardware structural example of the machine operation information provision system by 1st Embodiment. It is a figure which shows the example of a process of a data processing part. It is a figure which shows the example of the email of the error message displayed on a 2nd personal terminal. It is a figure which shows the example of the report displayed as a graph on the web browser of a 1st personal terminal. 6 is a flowchart showing an operation example of the on-premises server according to the first embodiment. It is a flow chart which shows the example of operation of the cloud server by a 1st embodiment. It is a figure which shows the functional structural example of the cloud server by 2nd Embodiment. It is a figure which shows the push mail transmitted by the error notification part by 2nd Embodiment, and the example of the content of the web operation screen provided by the operation screen provision part. It is a flowchart which shows the operation example of the cloud server by 2nd Embodiment.

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a functional configuration example of a machine operation information providing system according to the first embodiment. Further, FIG. 2 is a diagram showing a hardware configuration example of the machine operation information providing system according to the first embodiment.

  First, the hardware configuration of the machine operation information providing system will be described with reference to FIG. As shown in FIG. 2, the machine operation information providing system according to the first embodiment includes a machine tool 100, an on-premises server 200 connected to the machine tool 100 via a first network 1001, and an on-premises server 200. The cloud server 300 is connected via two networks 1002. The first network 1001 is an in-house network composed of a LAN (hereinafter referred to as an in-house network 1001). The second network 1002 is an open network including the Internet and a mobile phone network (hereinafter referred to as the Internet 1002).

  Although only one machine tool 100 is illustrated here for simplification of description, a plurality of machine tools 100 may be connected to one on-premises server 200 via the in-house network 1001. It is possible.

  A mail server 400 is also connected to the Internet 1002. Also, personal terminals 500 and 600 can be connected to the Internet 1002. These personal terminals 500 and 600 are configured by personal computers, tablet terminals, smartphones, and the like. In the present embodiment, two personal terminals 500 and 600 are shown for convenience of explanation, but the number is not limited to this.

  The first personal terminal 500 accesses the cloud server 300 from a web browser, acquires and displays the execution result (details will be described later) of the web application included in the cloud server 300. Here, it is assumed that a person outside the factory, such as a manager or a manager of the factory where the machine tool 100 is installed, uses the first personal terminal 500 in a remote place. The second personal terminal 600 acquires and displays an error message (details will be described later) from the cloud server 300. Here, it is assumed that a worker inside the factory uses the second personal terminal 600.

  The machine tool 100 includes an NC device 100A and a drive unit 100B. The NC device 100A includes an input unit 101, a display unit 102, an interface 103, a CPU 104, a ROM 105, and a RAM 106. The NC device 100A is a known controller that controls the drive unit 100B. The drive unit 100B drives each mechanical unit of the machine tool 100.

  The input unit 101 is an operation unit for an operator to input various information and various instructions to the NC device 100A. The display unit 102 is a display that displays the information input by the input unit 101 and displays the execution result of the process by the NC device 100A. The interface 103 communicates data with the on-premises server 200 via the in-house network 1001.

  The ROM 105 and the RAM 106 store various machining programs for operating the NC device 100A, various operating parameters, names of machined parts, and the like. The CPU 104 executes processing for driving the drive unit 100B according to various programs and operation parameters stored in the ROM 105 and the RAM 106. The CPU 104 also executes communication with the on-premises server 200 via the interface 103.

  The RAM 106 also stores the execution result of the process performed by the CPU 104 on the drive unit 100B. The execution result of the process performed by the CPU 104 on the drive unit 100B is information regarding the operating status of the machine tool 100 including the date and time and the status of the machine tool 100 (hereinafter referred to as machine operation information). The CPU 104 transmits the machine operation information stored in the RAM 106 to the on-premises server 200 in response to a periodic request from the on-premises server 200.

  The on-premises server 200 includes a ROM 201, a RAM 202, a CPU 203, an interface 204, a storage device 205 and a mail server 206. The interface 204 performs mutual data communication with the NC device 100A of the machine tool 100 via the in-house network 1001. The storage device 205 is a non-volatile storage medium that stores various programs and data, and is configured by, for example, a hard disk or a semiconductor memory.

  The ROM 201, the RAM 202, and the storage device 205 store various programs and various data for operating the on-premises server 200. The CPU 203 executes various processes for operating the on-premises server 200 according to the programs and data stored in the ROM 201, the RAM 202, and the storage device 205. For example, the CPU 203 executes communication with the NC device 100A via the interface 204. The CPU 203 also executes a process of transmitting an electronic mail via the mail server 206.

  Specifically, the CPU 203 periodically transmits a data acquisition request to the NC device 100A of the machine tool 100 via the interface 204, and sequentially acquires the machine operation information of the machine tool 100. Then, the machine operation information acquired from the machine tool 100 is sequentially stored in the storage device 205, and a database of machine operation information is constructed in the storage device 205. Further, the CPU 203 transmits the machine operation information stored in the storage device 205 by e-mail via the mail server 206. The details of the process related to the acquisition of the machine operation information from the machine tool 100 and the transmission of the machine operation information by e-mail will be described later with reference to FIG.

  In the present embodiment, the on-premises server 200 is not in a state of constant connection with the Internet 1002, and is in a connected state only when sending an electronic mail via the mail server 206. In addition, in the present embodiment, the mail server 206 is provided as a configuration dedicated to the transmission of electronic mail. That is, the mail server 206 opens only the transmission port (SMTP server) and closes the reception port (POP server). This physically closes the entrance to the on-premises server 200 from the Internet 1002.

  The cloud server 300 includes a ROM 301, a RAM 302, a CPU 303, an interface 304, and a storage device 305. The interface 304 communicates with the on-premises server 200, the mail server 400, and the personal terminals 500 and 600 via the Internet 1002. The storage device 305 is a non-volatile storage medium that stores various programs and data, and is configured by, for example, a hard disk or a semiconductor memory.

  The ROM 301, the RAM 302, and the storage device 305 store various programs and various data for operating the cloud server 300. The CPU 303 executes various processes for operating the cloud server 300 according to the programs and data stored in the ROM 301, the RAM 302, and the storage device 305. Further, the CPU 303 stores the execution result of the process in the storage device 305. The details of the processing performed by the CPU 303 of the cloud server 300 will be described later with reference to FIG.

  Since well-known devices can be directly applied to the mail server 400 and the personal terminals 500 and 600, a concrete hardware configuration is omitted in the drawing. Briefly described, the mail server 400 includes a ROM, a RAM, a CPU, an interface and a storage device, and the CPU performs a predetermined process relating to transmission and reception of an electronic mail according to a program and data stored in the ROM, the RAM and the storage device. Run. Specifically, the storage device of the mail server 400 is assigned with a storage area corresponding to the mail address of the cloud server 300. The mail server 400 receives an electronic mail addressed to the mail address of the cloud server 300 sent from the on-premises server 200 via the interface and stores it in the storage device. Then, the stored e-mail is transmitted in response to the request from the cloud server 300.

  Each of the personal terminals 500 and 600 includes an input unit, a display unit, a ROM, a RAM, a CPU, an interface and a storage device, and the CPU executes various processes according to programs and data stored in the ROM, the RAM and the storage device. To do. Various processes by the CPU are executed according to an instruction input by the user to the input unit. Then, the execution results of various processes by the CPU are displayed on the display unit. As described above, in the first personal terminal 500, the process of accessing the cloud server 300 from the web browser and acquiring and displaying the execution result of the web application is executed. Further, the second personal terminal 600 executes a process of acquiring and displaying the error message from the cloud server 300.

  Next, the functional configurations of the on-premises server 200 and the cloud server 300 will be described with reference to FIG. As shown in FIG. 1, the on-premises server 200 includes an on-premises side information acquisition unit 21, a data processing unit 22, and an information transmission unit 23 as its functional configuration. Each of these functional blocks 21 to 23 is realized by a program stored in the ROM 201, the RAM 202 or the storage device 205 shown in FIG. 2 operating under the control of the CPU 203.

  In addition, the cloud server 300 includes a cloud-side information acquisition unit 31 and a process execution unit 32 as its functional configuration. The process execution unit 32 includes an error notification unit 32A and a report display unit 32B as a more specific functional configuration. Each of these functional blocks 31 and 32 is realized by the program stored in the ROM 301, the RAM 302, or the storage device 305 shown in FIG. 2 operating under the control of the CPU 303.

  The on-premise side information acquisition unit 21 acquires the machine operation information of the machine tool 100 from the NC device 100A of the machine tool 100. This machine operation information is acquired by the polling method. That is, the on-premise information acquisition unit 21 transmits a machine operation information data acquisition request to the NC device 100A, and acquires the machine operation information from the NC device 100A as a response. Then, the on-premise information acquisition unit 21 sequentially stores the machine operation information acquired from the NC device 100A in the storage device 205, and builds a database of machine operation information in the storage device 205. The polling time interval can be arbitrarily changed.

  Note that the NC device 100 </ b> A transmits the machine operation information stored in the RAM 106 to the on-premises server 200 when the data acquisition request is sent from the on-premises server 200. For example, the NC device 100A transmits all the machine operation information stored in the RAM 106 to the on-premises server 200, and deletes the transmitted machine operation information from the RAM 106. Here, if the time interval of polling performed from the on-premise server 200 to the NC device 100A is longer than the time interval at which the machine operation information is sequentially stored in the RAM 106, a plurality of times per polling. The machine operation information regarding the above is transmitted from the NC device 100A to the on-premises server 200. The method shown here is an example, and the method of acquiring the machine operation information by the on-premise side information acquisition unit 21 is not limited to this.

  As described above, the machine operation information that the on-premises server 200 acquires from the NC device 100A is information that is sequentially generated by the CPU 104 of the NC device 100A controlling the drive unit 100B, and the operation of the machine tool 100 at each date and time. It shows the situation. This machine operation information is less confidential than information such as the machining program of the machine tool 100, various operating parameters, and the names of machined parts, and is the information that the factory manager or manager wants to grasp from a remote location. There is one. In the present embodiment, the on-premises server 200 acquires the machine operation information having such a property from the NC device 100A, and provides this to the cloud server 300 in the form of an electronic mail.

  The data processing unit 22 processes the machine operation information, which is the raw data acquired by the on-preside information acquisition unit 21, to reduce the amount of data. That is, the machine operation information as raw data acquired by the on-preside information acquisition unit 21 is sequentially stored in the storage device 205 as described above. The data processing unit 22 processes the raw data of the machine operation information stored in the storage device 205 at the timing of providing the machine operation information in the form of electronic mail to the cloud server 300, and generates post-process data. By processing the raw data, the amount of data to be transmitted can be reduced. The processed data is generated by the data processing unit 22 as a CSV (Comma-Separated Values) file, for example. The CSV file generated by the data processing unit 22 is stored in the storage device 205.

  FIG. 3 is a diagram illustrating a processing example of the data processing unit 22. 3A is raw data of machine operation information, and FIG. 3B is data after processing. The raw data is data in which the operating states of the machine tool 100 (various statuses such as running, stopped, disconnected, and alarm) generated at regular time intervals are sequentially recorded in each record. The operating status of the machine tool 100 is created not only at fixed time intervals but also when various statuses are changed. On the other hand, the processed data is data obtained by compressing a period in which the same status continues into one record. As a result, only the record when the status of the machine tool 100 changes is created. In each record, a machine ID for identifying the target machine tool 100, a status, and a date and time when the status is switched are recorded.

  It should be noted that FIG. 3 shows an example of the processing processing by the data processing unit 22, and the present invention is not limited to this. For example, in order to facilitate processing of the machine operation information in the cloud server 300, the raw data of the machine operation information may be processed into a content suitable for the processing of the cloud server 300. Further, here, the processed machine operation information is generated as a CSV file, but it is not limited to the CSV file. The CSV file is preferable in that the data capacity can be reduced, but may be another file format that the cloud server 300 can easily process.

  The information transmission unit 23 transmits the machine operation information acquired from the machine tool 100 by the on-premise information acquisition unit 21, that is, the machine operation information stored in the storage device 205 to the mail address of the cloud server 300 by e-mail. To do. The email address of the cloud server 300 is preset in the information transmission unit 23 as email account information. In the present embodiment, the information transmission unit 23 transmits the machine operation information to the cloud server 300 in two types (strictly, the e-mail address of the cloud server 300 is designated and transmitted to the mail server 400).

  One aspect of the present embodiment is that the on-premise information acquisition unit 21 promptly acquires the machine operation information from the machine tool 100 (that is, at the time of acquiring the machine operation information), and the machine operation information is provided to the cloud server 300. Send to. In another mode, the machine operation information sequentially stored in the storage device 205 is periodically transmitted to the cloud server 300 at predetermined intervals. In the case of transmitting periodically, for example, the data processing unit 22 processes the machine operation information that has not been transmitted by the time of the previous transmission, and attaches the CSV file generated by this to the email. Send.

  Specifically, when the machine operation information acquired by the on-preside information acquisition unit 21 indicates a predetermined state of the machine tool 100, the information transmission unit 23 acquires the machine operation information by the on-preside information acquisition unit 21. The machine operation information is immediately sent to the cloud server 300 by e-mail. The predetermined state is, for example, a state in which the machine tool 100 is “stopped”. In this case, the information transmission unit 23 includes a text that includes a status indicating that the machine tool 100 is stopped, a machine ID that identifies the stopped machine tool 100, a predetermined error code related to the stop of the machine tool 100, and the like. Data is generated, and an electronic mail in which the text data is recorded in the mail body is transmitted to the cloud server 300.

  The content of the predetermined state may be arbitrarily set for the on-premises server 200. For example, when the machine operation information indicating the state of “alarm” is acquired by the on-premise information acquisition unit 21 in addition to “stopped”, the email generated as text data is promptly transmitted to the cloud server 300. You may

  On the other hand, when the machine operation information acquired by the on-preside information acquisition unit 21 does not indicate the predetermined state of the machine tool 100, the information transmission unit 23 stores the machine operation information acquired by the on-preside information acquisition unit 21. The machine operation information stored in the device 205 and stored in the storage device 205 at any time is periodically transmitted by e-mail at predetermined intervals. In this case, the data processing unit 22 regularly generates a CSV file of machine operation information at predetermined intervals, and the information transmission unit 23 transmits the generated CSV file to the cloud server 300. The email server 400 receives the email sent by the information sending unit 23 to the cloud server 300. A storage area corresponding to the mail address of the cloud server 300 is assigned to the mail server 400.

  The cloud-side information acquisition unit 31 acquires the machine operation information of the machine tool 100 by receiving the email transmitted by the information transmission unit 23. Specifically, the cloud-side information acquisition unit 31 periodically transmits to the mail server 400 an email acquisition request transmitted to the mail address of the cloud server 300 at predetermined intervals, and as a response, the mail server. Get an email from 400. Then, the cloud-side information acquisition unit 31 sequentially stores, in the storage device 305, the machine operation information recorded as text data in the text of the email acquired from the mail server 400 or the machine operation information recorded in the attached CSV file. Store and build a database of machine operation information in the storage device 305. Specifically, if the title or body of the email sent from the mail server 400 contains a specific character string, it is determined as machine operation information and is recorded as text data in the body of the email. The database built in the storage device 305 is updated based on the machine operation information or the machine operation information recorded in the attached CSV file. Also, the presence or absence of the attached file of the e-mail is confirmed, and if the type (extension) of the attached file is a CSV file, the contents of the CSV file are read and the contents of the database built in the storage device 305 are updated. You may

  The process execution unit 32 executes a predetermined application process on the machine operation information acquired by the cloud-side information acquisition unit 31, that is, the machine operation information stored in the storage device 305. The predetermined application processing is processing by the error notification unit 32A and processing by the report display unit 32B.

  The error notification unit 32A is an e-mail obtained from the mail server 400 in which machine operation information for notifying a predetermined state (for example, a stopped state) of the machine tool 100 is recorded as text data in the text of the e-mail. In this case, the processing of notifying the second personal terminal 600 of the error message is executed. That is, the error notification unit 32A is promptly transmitted by the information transmission unit 23 because the machine operation information acquired by the on-premise information acquisition unit 21 of the on-premises server 200 indicates the predetermined state of the machine tool 100. When the received e-mail is received, the error notification push mail (push type e-mail) is transmitted to the second personal terminal 600 designated in advance. The email sent by the error notification unit 32A is pushed to the second personal terminal 600 via the mail server 400.

  The mail address of the second personal terminal 600 is registered in the cloud server 300 in advance. For example, as the mail address of the second personal terminal 600, the mail address of the worker who works at the factory site is registered. The email address of the worker is, for example, the email address of a smartphone possessed by the worker. If the worker always has a mobile terminal such as a tablet terminal or a notebook computer, the e-mail address of the mobile terminal may be used.

  In this way, if the machine tool 100 is stopped for some reason, machine operation information indicating the stopped state is transmitted from the machine tool 100 to the on-premises server 200 by periodic polling, and then the machine operation information is promptly sent. It is sent to the mail server 400 by electronic mail. The electronic mail sent to the mail server 400 is promptly acquired by the cloud server 300 that regularly accesses the mail server 400. Then, an error notification e-mail notifying that the machine tool 100 is stopped is generated by the error notification unit 32A and push-transmitted to the worker's smartphone or the like. As a result, the worker can grasp that the machine tool 100 is stopped without delay and can quickly perform an appropriate treatment.

  FIG. 4 is a diagram showing an example of an email of an error message displayed on the second personal terminal 600. As shown in FIG. 4, in the body of the electronic mail displayed on the display of the second personal terminal 600, a status indicating that the machine tool 100 is stopped, and a machine ID that identifies the stopped machine tool 100. , And information such as a predetermined error code related to the stop of the machine tool 100.

  The information recorded in the body of the email sent to the second personal terminal 600 is the same as the information recorded in the body of the email acquired by the cloud-side information acquisition unit 31 from the mail server 400. It may be. In this case, the error notification unit 32A may transfer the electronic mail acquired from the mail server 400 only by changing the destination mail address to the mail address of the second personal terminal 600.

  In response to a request from the web browser of the first personal terminal 500, the report display unit 32B processes the machine operation information stored as a database in the storage device 305 to generate display data according to the request, The generated display data is provided to the web browser. The machine operation information used when the display data is generated includes machine operation information when the error notification unit 32A gives an error notification.

  Specifically, the report display unit 32B performs predetermined aggregation using the machine operation information stored in the storage device 305, and generates display data in which the aggregation result is visualized in a report format such as a list or a graph. . Then, the generated display data is provided to the first personal terminal 500 and displayed on the web browser. FIG. 5 is a diagram showing an example of a report displayed as a graph on a web browser.

  In addition, what kind of processing the report display unit 32B performs can be arbitrarily set as a program of the web application. The report display unit 32B may generate and provide a plurality of types of reports. In this case, the report display unit 32B stores a web application program for each type of report to be provided, activates the web application according to the type of report requested from the first personal terminal 500, and then outputs the given program. Execute the process.

  FIG. 6 is a flowchart showing an operation example of the on-premises server 200 configured as described above. The flowchart shown in FIG. 6 starts when the power of the on-premises server 200 is turned on.

  First, the on-premise information acquisition unit 21 determines whether or not it is time to acquire data from the machine tool 100 by periodic polling (step S1). If it is not yet time to acquire data, the process transitions to step S10. On the other hand, when it is time to acquire data, the on-premise information acquisition unit 21 transmits a machine operation information data acquisition request to the NC device 100A, and acquires the machine operation information from the NC device 100A as a response (step). S2). Then, the on-premise side information acquisition unit 21 stores the machine operation information acquired from the NC device 100A in the storage device 205 (step S3).

  Next, in the information transmission unit 23, the machine operation information acquired from the machine tool 100 by the on-preside information acquisition unit 21 and stored in the storage device 205 indicates a predetermined state (for example, a stopped state) of the machine tool 100. It is determined whether or not the object has changed (step S4). When the machine operation information is changed to the one indicating the predetermined state of the machine tool 100, the information transmitting unit 23 determines the status indicating that the machine tool 100 is stopped, the machine ID that identifies the stopped machine tool 100, and the machine tool. Text data including a predetermined error code relating to the stop of the machine 100 is generated (step S5), and an electronic mail in which the text data is recorded in the mail text is transmitted to the mail address of the cloud server 300 (step S6). Then, the process transitions to step S10.

  When it is determined in step S4 that the machine operation information has not changed to the one indicating the predetermined state of the machine tool 100, the data processing unit 22 periodically cloud-stores the machine operation information stored in the storage device 205. It is determined whether or not a predetermined time corresponding to a predetermined interval when transmitting to the server 300 has elapsed since the previous transmission (step S7). If the predetermined time has not yet passed, the process transitions to step S10.

  On the other hand, when the predetermined time has elapsed, the data processing unit 22 processes among the machine operation information stored in the storage device 205, the machine operation information that has not been transmitted by the time of the previous transmission. A CSV file is generated (step S8). Then, the information transmitting unit 23 generates an e-mail with the CSV file attached and sends the e-mail to the mail address of the cloud server 300 (step S9). Then, the process transitions to step S10.

  In step S10, the on-premises server 200 determines whether or not the power has been turned off. If the power is not turned off, the process returns to step S1 to repeat the above process. On the other hand, when the power of the on-premises server 200 is turned off, the processing of the on-premises server 200 shown in FIG. 6 is ended.

  FIG. 7 is a flowchart showing an operation example of the cloud server 300 configured as described above. The flowchart shown in FIG. 7 starts when the cloud server 300 is powered on.

  First, the cloud-side information acquisition unit 31 determines whether or not it is time to periodically access the mail server 400 to acquire an electronic mail (step S11). If it is not yet time to acquire the e-mail, the process proceeds to step S20.

  On the other hand, when it is time to acquire an e-mail, the cloud-side information acquisition unit 31 transmits an e-mail acquisition request to the mail server 400, and acquires an e-mail as a response from the mail server 400 (step S12). . Then, the cloud-side information acquisition unit 31 stores, in the storage device 305, the machine operation information recorded as text data in the text of the email acquired from the mail server 400 or the machine operation information recorded in the attached CSV file. Yes (step S13).

  Next, the error notification unit 32A determines whether or not the electronic mail acquired from the mail server 400 notifies the predetermined state of the machine tool 100 (step S14). This determination may be performed by analyzing the content recorded in the body of the electronic mail, or may be performed based on whether or not there is an attached file. Here, when the electronic mail acquired from the mail server 400 is for notifying the predetermined state of the machine tool 100, the error notification unit 32A transmits an error notification push mail to the second personal terminal 600 designated in advance. Yes (step S15). Then, the process transitions to step S20.

  When it is determined in step S14 that the electronic mail acquired from the mail server 400 does not notify the predetermined state of the machine tool 100, the report display unit 32B displays the display data from the web browser of the first personal terminal 500. It is determined whether an acquisition request has been received (step S16). If the display data acquisition request has not been received, the process proceeds to step S20.

  On the other hand, when the display data acquisition request is received from the web browser of the first personal terminal 500, the report display unit 32B activates the web application corresponding to the request (step S17) and stores it in the storage device 305 as a database. Display data according to the request is generated by processing the machine operation information that has been displayed (step S18). Then, the report display unit 32B transmits the generated display data to the first personal terminal 500 (step S19) and displays it on the web browser. Then, the process transitions to step S20.

  In step S20, the cloud server 300 determines whether the power has been turned off. If the power is not turned off, the process returns to step S11 to repeat the above process. On the other hand, when the power of the cloud server 300 is turned off, the processing of the cloud server 300 shown in FIG. 7 ends.

  As described in detail above, in the first embodiment, the machine tool 100 is connected to the on-premises server 200 via the in-house network 1001, and the on-premises server 200 is connected to the cloud server 300 via the Internet 1002. ing. The on-premises server 200 acquires the machine operation information of the machine tool 100 and sends it by e-mail to the mail address of the cloud server 300, and the cloud server 300 receives the e-mail to operate the machine tool 100. Information is acquired, and a predetermined application process is executed on the acquired machine operation information.

  According to the first embodiment configured in this way, the machine tool 100 is not directly connected to the cloud server 300 via the Internet 1002, but is connected to the on-premises server 200 via the in-house network 1001. Therefore, it is possible to prevent unauthorized access from the outside by invading the machine tool 100 via the Internet 1002.

  The machine operation information of the machine tool 100 is transmitted from the on-premises server 200 to the cloud server 300 via the Internet 1002, but since it is transmitted using an email, the on-premises server 200 is always connected to the Internet 1002. The state is not reached, and it is possible to prevent the intrusion into the on-premises server 200.

  Moreover, the on-premises server 200 includes the mail server 206, and only the transmission port of the mail server 206 is opened and the reception port is closed. This makes it possible to physically close the entrance to the on-premises server 200 from the Internet 1002 and prevent access to the machine tool 100 from the Internet 1002 using the on-premises server 200 as a stepping stone.

  As described above, according to the first embodiment, the machine tool 100 is operated through the cloud server 300 in a state where the highly confidential information stored in the machine tool 100 is less likely to leak due to unauthorized access from the outside. It will be possible to check the situation at a remote location outside the factory. Specifically, by accessing the cloud server 300 from the web browser of the first personal terminal 500, it is possible to browse the machine operation information in a report format or the like. In addition, the machine operation information that requires an emergency response can be confirmed in the factory by a push mail transmitted to the second personal terminal 600.

(Second embodiment)
Next, a second embodiment of the present invention will be described based on the drawings. FIG. 8 is a diagram showing a functional configuration example of a cloud server 300 ′ according to the second embodiment. Note that, in FIG. 8, components denoted by the same reference symbols as those shown in FIG. 1 have the same functions, and therefore, redundant description will be omitted here. In the second embodiment, a cloud server 300 ′ is used instead of the cloud server 300 shown in FIG. The functional configuration of the on-premises server 200 is similar to that of the first embodiment.

  As shown in FIG. 8, the cloud server 300 ′ according to the second embodiment includes an error notification unit 32A ′ instead of the error notification unit 32A as a specific functional configuration of the process execution unit 32 ′, and an operation screen. It further includes a providing unit 32C, a reason information acquisition unit 32D, and an information management unit 32E.

  The error notification unit 32A ′ notifies the predetermined state (for example, the stopped state) of the machine tool 100 from the email acquired from the mail server 400, that is, the on-premise information acquisition unit 21 of the on-premises server 200. The second personal terminal designated in advance when the electronic mail promptly transmitted by the information transmitting unit 23 due to the fact that the machine operation information acquired by means of indicating the predetermined state of the machine tool 100 is received. An error notification push mail is sent to 600. This point is the same as the error notification unit 32A described in the first embodiment.

  In the second embodiment, the error notification unit 32A ′ transmits a push mail including location information (URL) regarding the web operation screen for inputting the reason why the predetermined state has occurred to the second personal terminal 600. This is different from the first embodiment in that The error notification unit 32A 'according to the second embodiment corresponds to the push mail transmission unit in the claims. The second personal terminal 600 corresponds to a designated client terminal.

  A hyperlink for accessing the web operation screen is attached to the URL described in the push mail transmitted by the error notification unit 32A ', and the user of the second personal terminal 600 specifies the URL. Thus, the web browser can be activated to display the web operation screen. The operation screen providing unit 32C of the cloud server 300 'accepts that the URL is designated by the user operation, and provides the web operation screen to the second personal terminal 600.

  FIG. 9 is a diagram showing an example of contents of a push mail transmitted by the error notification unit 32A 'and a web operation screen provided by the operation screen providing unit 32C. FIG. 9A shows a display example of the push mail, and FIG. 9B shows a display example of the web operation screen. As shown in FIG. 9A, in the body of the push mail displayed on the display of the second personal terminal 600, the status indicating that the machine tool 100 is stopped and the stopped machine tool 100 are specified. In addition to the machine ID to be executed and a predetermined error code relating to the stop of the machine tool 100, a URL in which a hyperlink to a web operation screen is set is included.

  Further, as shown in FIG. 9B, the web operation screen displayed on the display of the second personal terminal 600 shows the status indicating that the machine tool 100 is stopped and the machine tool 100 that is stopped. In addition to the specified machine ID and a predetermined error code related to the stop of the machine tool 100, a plurality of selection buttons for selecting a typical stop reason are included. Typical selection reasons are displayed on the plurality of selection buttons. A free comment input field is displayed below the plurality of selection buttons.

  When the worker of the factory having the second personal terminal 600 receives the push mail shown in FIG. 9 (a), he / she designates the URL described in the mail, thereby making it shown in FIG. 9 (b). Display the web operation screen shown. This web operation screen can directly operate the data in the cloud server 300. Then, the operator rushes to the corresponding machine tool 100 to check the reason for the stop and inputs the reason for the stop by operating the selection button corresponding to the reason for the stop. If there is no selection button corresponding to the reason for stopping, enter the actual reason for stopping in the free comment input field. Then, when the completion button is operated, the inputted information on the reason for stopping is stored in the cloud server 300 'as additional data.

  The reason information acquisition unit 32D of the cloud server 300 ′ uses the web operation screen provided by the operation screen providing unit 32C to the second personal terminal 600 to input the reason for the stop input by the user (the reason why the predetermined state has occurred). Get reason information about. The information management unit 32E manages the reason information acquired by the reason information acquisition unit 32D in association with the machine operation information acquired by the cloud-side information acquisition unit 31. That is, the information management unit 32E stores the reason information acquired by the reason information acquisition unit 32D in the storage device 305 in association with the error code included in the machine operation information acquired by the cloud-side information acquisition unit 31.

  In this way, for example, in addition to the fact that the machine tool 100 has stopped when the report display unit 32B provides the display data of the report in response to the request from the first personal terminal 500, the reason for the stop It is possible to generate and provide display data including the. The manager or the manager of the factory using the first personal terminal 500 cannot understand why the machine tool 100 is stopped only by looking at the error code. On the other hand, according to the second embodiment, the stop reason is stored in association with the error code, and the execution result of the web application including the stop reason can be provided to the first personal terminal 500. The user of the first personal terminal 500 can obtain useful information about the reason for suspension.

  FIG. 10 is a flowchart showing an operation example of the cloud server 300 'according to the second embodiment. The cloud server 300 'according to the second embodiment executes almost the same processing as the processing shown in the flowchart of FIG. 7, and additionally executes the processing shown in FIG. FIG. 10 illustrates only the processes additionally executed by the cloud server 300 ′ according to the second embodiment and the processes different from the first embodiment.

  In step S15, the error notification unit 32A 'transmits an error notification push mail to the second personal terminal 600 designated in advance. At this time, the error notification unit 32A ′ sends to the second personal terminal 600 a push mail including a URL relating to the web operation screen for inputting the reason why the predetermined state (stopped state) is occurring in the machine tool 100. Send.

  After that, the operation screen providing unit 32C accepts that the URL in the push mail is designated by the user operation, and provides the web operation screen to the second personal terminal 600 (step S21). In the second personal terminal 600, when the user specifies the URL, the web browser is activated, and the web operation screen provided by the operation screen providing unit 32C is displayed on the activated web browser. The user of the second personal terminal 600 inputs the reason for stopping the machine tool 100 through the web operation screen.

  The reason information acquisition unit 32D of the cloud server 300 'acquires the reason information regarding the stop reason input by the user through the web operation screen displayed on the web browser of the second personal terminal 600 (step S22). Then, the information management unit 32E stores the reason information acquired by the reason information acquisition unit 32D in the storage device 305 in association with the machine operation information stored in the storage device 205 in step S13 of FIG. 7 (step S23). . Then, the process transitions to step S20.

  As described in detail above, in the second embodiment, the URL regarding the web operation screen for inputting the reason why the machine tool 100 is stopped is included in the push mail for error notification, and the URL is designated. Accordingly, the web operation screen is provided to the second personal terminal 600, and the reason information input through the web operation screen is managed in association with the machine operation information. According to the second embodiment configured as described above, the reason for stopping the machine tool 100, which cannot be grasped only by the error code, can be stored and managed together with the machine operation information. Then, in response to the request from the first personal terminal 500, the report display unit 32B can provide the machine operation information including the reason for the stop to the first personal terminal 500.

  In the second embodiment, the above processing is executed as the processing of the cloud server 300 based on the machine operation information transmitted from the on-premises server 200 to the cloud server 300, and for this processing, the on-premises server 200 is executed. There is no communication between the cloud server 300 and the cloud server 300. That is, the on-premises server 200 is not connected to the Internet 1002 to communicate with the cloud server 300. Therefore, there is no unauthorized access from the Internet 1002 to the on-premises server 200 during execution of the process for providing the user with useful information indicating the reason for stopping the machine tool 100, and in this respect as well, intrusion from the outside is prevented. Can be effectively prevented.

  In the above embodiment, the on-premises server 200 acquires the machine operation information from the machine tool 100 and transmits all the acquired machine operation information to the cloud server 300, but the present invention is not limited to this. For example, the on-premises server 200 acquires from the machine tool 100, together with the machine operation information, information other than the machine operation information of the machine tool 100 that can be browsed only by a terminal (not shown) connected to the in-house network 1001. Alternatively, only the machine operation information may be transmitted to the cloud server 300. Alternatively, only a part of the machine operation information acquired from the machine tool 100 by the on-premises server 200 may be transmitted to the cloud server 300.

  Further, in the second embodiment, the example in which the reason why the machine tool 100 is in the predetermined state is input from the web operation screen and the reason information is managed together with the machine operation information has been described, but the present invention is not limited to this. Not done. For example, when the worker who receives the push notification mail of the error notification on the second personal terminal 600 performs the measure for canceling the predetermined state of the machine tool 100, the corresponding information indicating the measure content is operated on the web. It may be input from the screen and managed together with the machine operation information and the reason information.

  Further, in the above-described embodiment, an example in which the information transmission unit 23 of the on-premises server 200 transmits the machine operation information to the cloud server 300 in two kinds of modes has been described, but the present invention is not limited to this. For example, only the mode in which the on-premise information acquisition unit 21 promptly transmits the machine operation information to the cloud server 300 at the timing when the machine operation information is acquired from the machine tool 100 may be adopted. Alternatively, the machine operation information sequentially stored in the storage device 205 may be periodically transmitted to the cloud server 300 at predetermined intervals.

  Further, in the above-described embodiment, in a mode in which the machine operation information is periodically transmitted from the on-premises server 200 to the cloud server 300, the machine operation information stored in the storage device 205 is processed, and the machine operation information after the processing is processed. Although the example of transmitting the message to the cloud server 300 has been described, the present invention is not limited to this. For example, machine operation information as raw data that has not been processed may be transmitted to the cloud server 300, and the cloud server 300 may perform necessary information processing. In addition, when the usage fee of the cloud server 300 is a pay-as-you-go system, raw data is processed and the data amount is compressed and transmitted, thereby reducing the usage data amount in the cloud server 300 and reducing the server usage fee. It has the merit of being able to.

  Further, in the above embodiment, the push mail is transmitted from the cloud server 300 to the mail address of the second personal terminal 600, but the present invention is not limited to this. For example, it may be configured as follows. That is, when the cloud server 300 sends a mail to the mail address corresponding to the second personal terminal 600, the cloud server 300 sends the mail to the mail server 400 having a storage area to which the mail address of the second personal terminal 600 is allocated. A dedicated mail application is installed in the second personal terminal 600, and when a mail is sent from the cloud server 300 to the mail server 400, a push notification is sent from the mail server 400 to the second personal terminal 600. . Then, the second personal terminal 600 displays the mail stored in the mail server 400 by a dedicated mail application.

In addition, each of the first and second embodiments described above is merely an example of the embodiment for carrying out the present invention, and the technical scope of the present invention is not limitedly interpreted by these. It does not happen. That is, the present invention can be implemented in various forms without departing from the gist or the main features thereof.

21 on-premise information acquisition unit 22 data processing unit 23 information transmission unit 31 cloud side information acquisition unit 32, 32 'processing execution unit 32A, 32A' error notification unit (push mail transmission unit)
32B Report display unit 32C Operation screen provision unit 32D Reason information acquisition unit 32E Information management unit 100 Machine tool 100A NC device 200 On-premise server 206 Mail server 300,300 'Cloud server 400 Mail server 500,600 Personal terminal 1001 First network ( Internal network)
1002 Second network (Internet)

Claims (11)

An on-premises server connected to the machine tool via the first network,
A cloud server connected to the on-premises server via a second network,
The above on-premises server is
An on-premise information acquisition unit that acquires machine operation information, which is information regarding the operation status of the machine tool, from the machine tool,
An information transmission unit for transmitting the machine operation information acquired by the on-premise side information acquisition unit to the mail address of the cloud server by e-mail,
The cloud server is
By receiving the electronic mail transmitted by the information transmitting unit, a cloud side information acquiring unit that acquires the machine operation information,
A machine operation information providing system, comprising: a process execution unit that executes a predetermined application process on the machine operation information acquired by the cloud-side information acquisition unit. The on-premises server includes a mail server,
The machine operation information providing system according to claim 1, wherein the mail server has only a transmission port opened and a reception port closed. The on-premises server further includes a data processing unit that reduces the amount of data by processing the machine operation information as the raw data acquired by the on-preside information acquisition unit,
The machine operation information providing system according to claim 1 or 2, wherein the information transmission unit transmits the machine operation information processed by the data processing unit by electronic mail.   In the case where the machine operation information acquired by the on-preside information acquisition unit indicates a predetermined state of the machine tool, the information transmission unit acquires the machine operation information at the time of acquisition of the machine operation information by the on-preside information acquisition unit. While the operation information is transmitted by e-mail, when the machine operation information acquired by the on-preside information acquisition unit does not indicate a predetermined state of the machine tool, the above-described information acquired by the on-preside information acquisition unit 3. The machine operation information is stored in a storage device, and the machine operation information stored in the storage device at any time is periodically transmitted by e-mail at predetermined intervals. Machine operation information providing system.   The information transmission unit stores the machine operation information acquired by the on-preside information acquisition unit in a storage device, and periodically stores the machine operation information stored in the storage device at predetermined intervals. The machine operation information providing system according to claim 1 or 2, wherein the system is provided by e-mail. The on-premises server further includes a data processing unit that reduces the amount of data by processing the machine operation information as raw data stored in the storage device at any time,
The machine operation information providing system according to claim 4 or 5, wherein the information transmission unit periodically transmits the machine operation information processed by the data processing unit at a predetermined interval.   The information transmission unit, when the machine operation information acquired by the on-preside information acquisition unit indicates a predetermined state of the machine tool, at the time of acquisition of the machine operation information by the on-preside information acquisition unit, the machine. 3. The machine operation information providing system according to claim 1, wherein the operation information is transmitted by electronic mail. The processing execution unit of the cloud server is
When the e-mail transmitted by the information transmission unit due to the machine operation information acquired by the on-premise side information acquisition unit indicating the predetermined state of the machine tool is received, the predetermined state is A push mail sending unit that sends a push mail containing location information about the web operation screen for entering the reason that is occurring to the specified client terminal,
An operation screen providing unit that receives the location information specified by a user operation and provides the web operation screen to the client terminal,
A reason information acquisition unit that acquires reason information regarding the reason why the predetermined state is generated, which is input through the web operation screen provided by the operation screen providing unit,
The information management part which links | relates and manages the reason information acquired by the said reason information acquisition part with the said machine operation information acquired by the said cloud side information acquisition part was provided. Machine operation information provision system described. An on-premises server connected to a machine tool via a first network and a cloud server via a second network,
An on-premise information acquisition unit that acquires machine operation information, which is information regarding the operation status of the machine tool, from the machine tool,
An on-premises server, comprising: an information transmission unit that transmits the machine operation information acquired by the on-premise information acquisition unit to the mail address of the cloud server by electronic mail. The above-mentioned information transmission unit is configured with a mail server,
The on-premises server according to claim 9, wherein the mail server has only a transmission port opened and a reception port closed. Machine operation information, which is information on the operating status of the machine tool, from an on-premises server connected to the machine tool via the first network, via a cloud server connected to the on-premises server via the second network. Is provided to the user,
A first step in which the on-premise information acquisition unit of the on-premise server acquires the machine operation information from the machine tool;
A second step in which the information transmission unit of the on-premises server transmits the machine operation information acquired by the information acquisition unit on the on-premise side to the mail address of the cloud server by e-mail;
A third step in which the cloud-side information acquisition unit of the cloud server acquires the machine operation information by receiving the email transmitted by the information transmission unit;
A fourth step of performing a predetermined application process on the machine operation information acquired by the cloud-side information acquisition unit, and providing the execution result to the user. A method for providing machine operation information, characterized in that