JP6898490B1 - Information processing device and information processing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To identify the cause which is the rate-determining factor of the operation of a machine tool and raise the operation rate. An information processing device used with the ultimate goal of increasing the operating rate of a machine tool, and for each program executed in the machine tool, the number of alarm stops generated during the execution of the program Provided is an information processing apparatus including a display control unit that generates at least one of display data for display and display data for displaying an alarm stop time. [Selection diagram] Fig. 1

Description

The present invention relates to an information processing apparatus and an information processing method.

In the above technical field, Patent Document 1 discloses a technique for displaying an alarm stop period, an alarm history, and an alarm content of a machine tool.

JP-A-2019-174971

However, in the technique described in the above document, only the operating states are displayed in a list in order of the date and time of occurrence (Fig. 7), and there is no device for increasing the operating rate of the machine tool.

An object of the present invention is to provide a technique for solving the above-mentioned problems.

In order to achieve the above object, the information processing device according to the present invention is
For each program executed on the machine tool, the number of alarm stops that occurred during the execution of the program and the multiple types of alarm stops that occurred during the execution of the program for each program executed on the machine tool are displayed. a display control unit for generating display data for,
On the time axis, program information indicating a program executed in the machine tool, state information indicating that the machine tool is in an alarm stop, and the type of the alarm stop are acquired from a plurality of machine tools. Information acquisition department and
With
The display control unit displays the state information of the machine tool selected from the plurality of machine tools on the time axis on the screen.
(I) When the state information is selected, the program information and the alert stop type are displayed and controlled so as to be displayed near the selected state information on the screen.
(ii) An information processing device that generates the display data when a program-specific alarm analysis instruction is selected.

According to the present invention, the operating rate of the machine tool can be increased.

It is a block diagram which shows the structure of the information processing apparatus which concerns on 1st Embodiment. It is a block diagram which shows the structure of the information processing system which concerns on 2nd Embodiment. It is a flowchart which shows the process flow of the information processing system which concerns on 2nd Embodiment. It is a figure which shows the screen example generated by the display control unit which concerns on 2nd Embodiment. It is a figure which shows the screen example generated by the display control unit which concerns on 2nd Embodiment. It is a figure which shows the screen example generated by the display control unit which concerns on 2nd Embodiment. It is a figure which shows the screen example generated by the display control unit which concerns on 2nd Embodiment. It is a figure which shows the screen example generated by the display control unit which concerns on 2nd Embodiment. It is a figure which shows the screen example generated by the display control unit which concerns on 2nd Embodiment. It is a figure which shows the screen example generated by the display control unit which concerns on 2nd Embodiment. It is a figure which shows the screen example generated by the display control unit which concerns on 2nd Embodiment. It is a figure which shows the example of data used for the display control part which concerns on 2nd Embodiment.

Hereinafter, embodiments of the present invention will be described in detail exemplarily with reference to the drawings. However, the components described in the following embodiments are merely examples, and the technical scope of the present invention is not limited to them.

[First Embodiment]
The information processing device 100 as the first embodiment will be described with reference to FIG. The information processing device 100 includes a display control unit 101. The display control unit 101 generates display data 112 for displaying at least one of the number of occurrences and the occurrence time of the alarm stop that occurred during the execution of the program 111 for each of the programs 111 executed by the machine tool.

If the number and time of alarm stop occurrences can be displayed for each program in this way, it is possible to grasp at a glance which program is the rate-determining factor for the operation of the machine tool and needs improvement. The alarm of the present embodiment is a warning when it is necessary to stop the machine tool, and is a concept including a notification of new tool preparation, a notification of tool change, a notification of a decrease in lubricating oil, and the like.

[Second Embodiment]
Next, the information processing apparatus according to the second embodiment will be described with reference to FIGS. 2 and 2. FIG. 2 is a diagram for explaining the configuration of the information processing system according to the present embodiment.

FIG. 2 is a diagram showing an example of a schematic configuration of the information processing system 200 according to the present embodiment. The information processing system 200 includes a machine tool 201 and a server 202 as an information processing device.

As the machine tool 201, a machine tool numerically controlled by a numerical control device is used, and examples thereof include a milling machine, a lathe, a turning / milling machine, a milling / turning machine, a turning center, a machining center, and a multi-tasking machine. Further, the machine tool may be an additional processing machine (Additive Manufacturing Device) for additional processing of metal powder.

The machine tool 201 includes actuators (axis drive actuators, spindle drive actuators, tool exchange actuators, work / pallet exchange actuators, cooling mechanism actuators, chip transfer actuators, etc.) and sensors (temperature sensor, vibration sensor, collision sensor, optical sensor, etc.). It includes a touch sensor, etc.) and is program controlled.

The machine tool 201 includes a numerical control device having a numerical controller (NC) and a programmable logic controller (PLC) inside. The PLC controls a plurality of actuators of the machine tool 201 based on the internal PLC control logic stored in the PLC register or the like and the data or signal received from the sensor or NC. The NC controls a plurality of actuators and PLCs based on user input, manually or automatically generated NC program (machining program), and data or signal received from a sensor.

The machine tool 201 communicates with the operating device 211 as a front-end controller and receives an operation using the operating device 211. At the same time, information such as data measured by the sensor in the machine tool 201 and a program executed by the machine tool 201 is sent to the operating device 211.

The operating device 211 of the present embodiment includes a keyboard, push buttons, and the like as a human-machine interface that accepts operation input operations from the user while displaying one screen to the user. However, the present invention is not limited to this. For example, the operating device 211 may be provided with a touch panel as a human-machine interface that accepts an operation input operation from the user while displaying one or a plurality of control screens to the user. Further, the operating device 211 may separately include one or a plurality of keypads and an input device such as a button or a key as an input unit. The operating device 211 may be integrated with the external operation panel of the machine tool 201.

The operating device 211 includes a memory for storing data, an operating system, a plurality of control applications, and a processor for executing a plurality of control applications based on the data stored in the memory.

The operating device 211 has a web browser, and can display a web screen generated and transmitted by the display control unit 221 as a web server.

The server 202 communicates with the operating device 211 to send and receive data. The operating device 211 may be incorporated in the housing of the machine tool 201. Communication between the server 202 and the operating device 211 may be a wired connection or a wireless connection via Bluetooth®, WiFi, or the like.

The server 202, which is an information processing device, includes a display control unit 221 and an information acquisition unit 222. The information acquisition unit 222 collects data 1200 shown in FIG. 12, for example, as historical information including various information such as the following from various machine tools via the operating device 211.

-Program information that accumulates multiple programs (Program No.) executed on the machine tool in association with time information-Whether the machine tool is running (Run), stopped (Stop), or alarm stopped (Alarm) Status information accumulated in association with time information (Status) ・ Information indicating the type and content of the alarm that occurred in the machine tool (AlarmNo, AlarmContent) was accumulated in association with the time when the alarm stopped. Alarm information

The display control unit 221 generates display data for displaying at least one of the number of occurrences and the occurrence time of the alarm stop during the execution of the program for each of the programs executed by the machine tool 201.

The display control unit 221 is an API (Application Programming Interface) that passes display data such as HTML to the web server unit 223. The web server unit 223 receives the display data generated by the display control unit 221 and transmits the display data in response to the access from the web browser.
The display control unit 221 is a functional module that can be realized by using a processor such as a CPU (Central Processing Unit) as hardware. However, it is not limited to the CPU, and may be a processor such as a GPU (Graphical Processing Unit) or DSP (digital signal processor), or a function of a circuit such as an FPGA (Field Programmable Gate Array) or an ASIC (Application Specific Integrated Circuit). You may. For example, the display control unit 221 generates data for displaying a web page in a markup language such as XML (Extensible Markup Language) or HTML (HyperText Markup Language). Then, the display data is transmitted in response to the data acquisition request from the web browser of the operating device 211 or the smart device 203 communicably connected to the server 202. As a result, display data such as a machine tool management screen can be displayed on the display of the operating device 211 or the smart device 203.

The processing flow of the display control unit 221 will be described with reference to the flowchart of FIG. First, in step S301, the information acquisition unit 222 collects history information from the machine tool 201 via the operating device 211.

Next, in step S302, the operating status of each machine is displayed in response to a request from the user (machine tool operator). FIG. 4 is a diagram showing screen transitions until the operating status of each machine is displayed.

In FIG. 4, when the user name and password are entered on the login screen 401 and the login is successful, the machine tool selection screen 402 is displayed next. On the machine tool selection screen 402, the status of all machine tools that the logged-in user is allowed to view is browsed, only the status of the machine tool in normal operation is browsed, or only the status of the machine tool in which an error occurs is browsed. You can choose whether to do it.

Here, for example, when a list of all machine tools is selected, the all machine tool list screen 403 is displayed. On the all machine tool list screen, the latest operating status of all machine tools (here, machine tools A, B, and C as examples) that the logged-in user is allowed to view is shown by a bar graph on the time axis. The all machine tool list screen 403 shows a state in which the machine A is not operating and the machines B and C are operating from about 7:50 to 10:30. The black part shows the time zone when it is stopped due to an error.

Next, in step S303 of FIG. 3, when the user selects the machine B having a long stop time due to an error, the operating status 501 on the working day as shown in FIG. 5 is displayed in detail.

Further, when the history report 502 is selected in FIG. 5, the process proceeds to step S305 of FIG. 3, and the history report screen 600 as shown in FIG. 6 is displayed.

The history report screen 600 is a screen for displaying the daily operation status with a plurality of bar graphs 602 in the period specified in the period designation field 601.

In this history report, the period of operation, power off, stoppage, alarm, or any other period is displayed in different colors. This makes it possible to identify at a glance the day when there were many alarms in the specified period. In this example, it can be seen that the alarm stop occurs for a long time on March 17, 2020.
In the present embodiment, "stopped" in the history report means that the program execution is stopped due to a single block stop, a pause, a reset, or the like, and is not an alarm stop state. On the other hand, the "alarm" is a state in which the machine tool is stopped due to the occurrence of the alarm. Therefore, in the following, it is also referred to as an alarm stop.

Here, the process proceeds to step S307 in FIG. 3, and the day on which the cause of the decrease in the operating rate is desired to be confirmed is specified. For example, in the example of FIG. 6, when "March 17" is specified and the time (for example, 14:35-16:45) is specified in detail, the process proceeds to step S309 to display the status graph screen. Specifically, as shown in FIG. 7, a state graph screen 701 in which bar graphs indicating operating, stopped, alarm, power off, and the like are arranged in parallel is displayed. Then, when the alarm period in the bar graph is specified, the alarm content and the program number are displayed on the alarm detail screen 702. The program number here is also the program name.

However, on the state graph screen 701, it is not possible to grasp what kind of program a lot of alerts are generated during execution. Therefore, by selecting the program-specific alert analysis button 703, the process proceeds to step S311, the program-specific screen 800 as shown in FIG. 8 is displayed, and a program having a poor operating rate is identified.

The program-specific screen 800 includes an analysis period setting unit 801, a graph display data selection unit 802, a graph display unit 803, a program analysis result detail unit 804, a slide bar 805, and a link 806.

The analysis period setting unit 801 is an input field for setting the target period of the analysis result to be displayed on the graph. Specifically, the start date is specified by the date of the year, month, and day, and the period is specified by the day. When accessing the first page, the latest one week's worth of access date is displayed. Specifically, the analysis start date is set to 3/17 and the analysis period is set to 7 days.

The graph display data selection unit 802 is a column for selecting data to be displayed on the graph. Either the stop time for each program or the number of stops can be selected. When the stop time is selected, the execution time at the end of the program normally (normal execution time) and the stop time at the time of alarm stop (total time obtained by accumulating the time from stop to alarm reset or program restart) are set. A plurality of identifiable bar graphs are displayed on the graph display unit 803. When the number of stops is selected, a bar graph obtained by accumulating the number of normal program terminations and the number of alarm stops is displayed on the graph display unit 803. The bar graph here is created using the two state information of "operating" and "alarm" shown in FIG. 7, and does not include the stopped state other than the alarm stopped of "stopped".

The graph display unit 803 displays the bar graphs of each of the plurality of (here, five) programs executed during the analysis period vertically side by side. This makes it possible to compare the operating rates of each program. The unit on the horizontal axis is min (minutes) for the stop time and the number of times for the number of stops. By looking at the graph display unit 803, it is possible to know in what kind of program the alarm stops frequently occur. Although the alarm portion is represented by one color in the bar graph in FIG. 8, the number of times and the time for each type of alarm may be displayed in different colors.

The analysis result detail section 804 for each program displays the following analysis results for each program in a table format.
-Title part 841: Program name The program name itself is a link, and you can transition to the alarm list screen (Fig. 10) that occurred in this program.-Operating time 842: Execution time when the program execution ends normally
(Unit is hour (hour) and min (minute) together)
-Alarm stop time 843: The time from when the alarm is stopped until the next program starts.
(Unit is hour (hour) and min (minute) together)
-Normal end count 844: Number of times the program execution ended normally-Alarm stop count 845: Number of alarm stops-Alarm number 846: Alarm number of the alarm that occurred in this program-Alarm message 847: Alarm that occurred in this program Alarm message

By sliding the slide bar 805 downward, the analysis results of other programs are displayed one after another as shown in FIG. That is, a list in which a plurality of programs 901 for which an alarm has occurred in the designated machine tool and the alarm message 902 in those programs 901 are associated with each other is displayed, and it is confirmed in which program what kind of alarm has occurred. be able to. That is, it is possible to proceed to step S313 of FIG. 3, identify an alert with a high frequency of occurrence, and confirm the content of the alert.

In this embodiment, the program means a machining program for machining a part. It may be a form in which one machining program is used to machine one part. For example, in order to machine one part, one program name or one program number of one machining program is set. Further, a plurality of machining programs may be used for one part. For example, in order to machine one part, four machining programs are set. In this case, four program names and four program numbers are set.

For example, one program with the program name “3333 aaa1234.MPP” shown in FIG. 8 may be executed for machining the part A.

As a result of executing the program of "3333 aaa1234.MPP" on the screen shown in FIG. 8, since the number of normal terminations is 0, it can be seen that an alarm is issued and the program is stopped each time it is executed. The machine tool worker can open the edit screen of the program of "3333 aaa1234.MPP" and change or delete the code causing the alarm. The numerical control device of the machine tool can execute the edited program of "3333 aaa1234.MPP". As a result, the cause of the machine tool that is stopped by issuing an alarm can be eliminated at an early stage, and the operating efficiency of the machine tool can be improved.

Further, in FIG. 8, four programs with program names "KDANI1.LDK", "NIGAL.CHI", "LGGKE.CNI", and "MEET_UP.XIY" are displayed. These four programs are used. The specifications may be such that the part B can be processed.

In such a case, since the number of normal terminations of the program with the program name "LGGKE.CNI" displayed on the screen is less than the number of alarm stops, "LGGKE.CNI" is used when operating the machine tool unattended at night. It turns out that it is inefficient to execute the program of. Therefore, the worker can set the machine tool to process so that the "LG GKE.CNI" program is not executed at night. By selecting and setting the program in this way, it is possible to improve the operating rate of the machine tool in the automatic operation of the machine tool at night.

The alarm list screen 1000 generated by the specific program shown in FIG. 10 includes an analysis period setting unit 1001, a graph display data selection unit 1002, a graph display unit 1003, an alarm detail unit 1004, and a link 1005.

The analysis period setting unit 1001 is an input field for setting the target period of the analysis result to be displayed on the graph. Specifically, the start date is specified by the date of the year, month, and day, and the period is specified by the day. During the display of FIG. 8, when the slide bar 805 is slid downward to scroll and the link of the program name is clicked in the display state as shown in FIG. 9, the analysis start date specified in FIG. 8 is displayed. If you want to check the displayed contents and also check the situation in other periods, you can change the display by changing the analysis start date in FIG.

The graph display data selection unit 1002 is a column for selecting data to be displayed on the graph. Either the stop time for each alarm or the number of stops can be selected. When the number of stops is selected as shown in FIG. 10, the graph display unit 1003 displays a bar graph showing the number of occurrences for each alarm that occurred during the execution of the specific program A within the analysis period in a vertically arranged manner. This makes it possible to compare the operating rates of various programs.

On the other hand, when the stop time is selected, a bar graph in which the stop time of the machine due to the alarm (time from the stop due to the alarm to the reset of the alarm or the restart of the program) is accumulated is displayed on the graph display unit 1103. The unit on the horizontal axis is min (minutes) for the stop time and the number of times for the number of stops.

The alarm detail unit 1004 displays the following analysis results in a table format for each alarm.
-Alarm message 1041: Alarm message of the alarm generated in this program A-Alarm stop count 1042: Alarm stop count-Alarm stop time 1043: Alarm stop time

From the link 1005, it is possible to transition to the program-specific screen 800 shown in FIG. Further, on the program-specific screen 800 of FIG. 8, the transition can be made from the link 806 to the “stop time / number of stops for each alarm” screen 1100 shown in FIG. When the analysis period is changed on the program-specific screen 800, the analysis period is held and displayed on the "stop time / number of stops for each alarm" screen 1100 as the transition destination.

The “stop time / number of stops for each alarm” screen 1100 of FIG. 11 includes an analysis period setting unit 1101, a graph display data selection unit 1102, a graph display unit 1103, an alarm detail unit 1104, and a link 1105.

The analysis period setting unit 1101 is an input field for setting the target period of the analysis result to be displayed on the graph. Specifically, the start date is specified by the date of the year, month, and day, and the period is specified by the day.

The graph display data selection unit 1102 is a column for selecting data to be displayed on the graph. Either the stop time for each alarm or the number of stops can be selected. When the stop time is selected as shown in FIG. 11, the graph display unit 1103 displays a bar graph in which the stop time of the machine due to the alarm (the time from the stop due to the alarm to the reset of the alarm or the restart of the program) is accumulated. Display on 1003. This makes it possible to compare the extent to which various alarms affect the operating rate of machines. Here, the unit on the horizontal axis is h (hour) in the case of stop time.

The alarm details section 1104 displays the following analysis results in a table format for each alarm.
-Alarm message 1141: Alarm message of the alarm that occurred during this analysis period-Alarm stop count 1142: Alarm stop count-Alarm stop time 1143: Alarm stop time By devising how to show the alarm data in this way, the user Makes it easier to determine where to start with the anomaly represented by the alarm. As a result, the operating rate of the machine can be increased.

For example, if there are many alarms such as "Prepare a new tool" or "Tool life has expired", replacing the tool early will improve the overall throughput. Note that "tool life has expired" is a display example of an alarm, and even after the alarm is displayed, machining for a certain period of time can be set so that machining can be performed with a constant quality. That is, the operator determines the amount of wear for which the tool should be replaced in advance, and when the tool reaches the amount of wear, it notifies that "the tool life has expired". Therefore, it is possible to set so that machining of a certain quality is possible for a certain period of time even if the machining is continued after the notification of "the tool life has expired" is given. This is an example of strong notification in consideration of safety.

Also, if there are many alarms such as "insufficient lubricating oil" or "low coolant tank level", replenishing the lubricating oil or coolant early or immediately will improve the overall throughput.

If there are many alarms such as "(X) -Overd label (soft limit 1)", modifying the NC program will improve the overall throughput. This is because it is an alarm that is issued when the axis coordinate command value of the NC program exceeds the specified range, and if it is verified in advance that the NC program operates correctly, it is basically an alarm that does not occur during actual machining.

According to this embodiment, as described above, alarm analysis for each program is possible. That is, based on the machine tool operation information, information such as daily program execution time and alarm stop time is aggregated and displayed for each program and each alarm. As a result, the user can compare the quality of the operating rate for each program and the influence on the operating rate for each alarm from this analysis result, and it becomes easy to improve the operating rate.

[Other Embodiments]
Although the invention of the present application has been described above with reference to the embodiment, the invention of the present application is not limited to the above embodiment. Various changes that can be understood by those skilled in the art can be made to the structure and details of the present invention within the technical scope of the present invention. Also included in the technical scope of the present invention are systems or devices in any combination of the different features contained in each embodiment.

In the above embodiment, at least one of the number and time of alarms generated during program execution is displayed on the screen for each program executed by a specific machine tool, but the present invention is not limited to this. Absent.

As shown in FIG. 12, since the statuses of a plurality of machine tools (MachineId) are collected, each of the plurality of machine tools and their machine tools is applied to one program (for example, G0001 in FIG. 12). It is also possible to display in association with at least one of the number of alarm stops and the time that occurred in.

In the above embodiment, the machining program has been described as an example of the program executed by the machine tool, but the program in the present invention is not limited to the machining program, and may be a measurement program or the like.

Further, the present invention may be applied to a system composed of a plurality of devices, or may be applied to a single device. Further, the present invention is also applicable when an information processing program that realizes the functions of the embodiment is supplied to a system or an apparatus and executed by a built-in processor. In order to realize the functions of the present invention on a computer, the technical scope of the present invention includes a program installed on the computer, a medium containing the program, a server for downloading the program, and a processor for executing the program. .. In particular, at least a non-transitory computer readable medium containing a program that causes a computer to execute the processing steps included in the above-described embodiment is included in the technical scope of the present invention.

Claims (3)

For each program executed on the machine tool, the number of alarm stops that occurred during the execution of the program, and for each program executed on the machine tool, the types of multiple alarm stops that occurred during the execution of the program. A display control unit that generates display data for display ,
On the time axis, program information indicating a program executed in the machine tool, state information indicating that the machine tool is in an alarm stop, and the type of the alarm stop are acquired from a plurality of machine tools. Information acquisition department and
With
The display control unit displays the state information of the machine tool selected from the plurality of machine tools on the time axis on the screen.
(I) When the state information is selected, the program information and the alert stop type are displayed and controlled so as to be displayed near the selected state information on the screen.
(ii) An information processing device that displays and controls the number of alarm stops and the plurality of alarm stop types when a program-specific alarm analysis instruction is selected. An information acquisition unit that acquires program information indicating a program executed in the machine tool and state information indicating that the machine tool is operating or at least one of the alarms is stopped on the time axis. Have more
The information processing device according to claim 1, wherein the display control unit uses the program information and the state information to generate a screen for displaying at least one of the number of times and the time of alarm stop for each program. The information acquisition unit further acquires alarm information indicating the type of alarm stop that has occurred on the time axis.
The display control unit combines the program information, the state information, and the alarm information on the time axis to further generate display data for displaying the type of the alarm stop that has occurred for each program. Item 2. The information processing apparatus according to item 2.

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