JP2007041794A - Production circumstance display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a production circumstance display device for instantaneously grasping production circumstances by a machine tool. <P>SOLUTION: Plan data including a program substitution time and a recess are displayed at a display as a graph format. When the production of a work piece by a machine tool is started, result data including the model of a workpiece and the completion time of working are prepared each time a completion signal is output from the machine tool, and the result data are plotted in a graph where the plan data are displayed on the display. Also, the cumulative number of workpieces based on the plan data at a current time is displayed as "a plan", the actual cumulative number of workpieces based on result data is displayed as a "result", and the difference of the cumulative number of those "plan" and "result" is displayed as a "progress" so as to be superimposed on the graph on the display by numerical notations. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a production status display device, and more particularly to a device for displaying production status by a machine tool in real time.

  2. Description of the Related Art Conventionally, in a production line using a machine tool, an operator manages production by checking the status of each process and the entire production line and recording it in a production management table. For example, the production plan for each unit time, production results, and the contents when an abnormality occurs are written in the production management table. By creating such a production management table, the progress of production and abnormalities are grasped, and measures are taken to eliminate the abnormalities as necessary.

  However, if the creation of the production management table is entrusted to the operator, it will be troublesome, so in Patent Document 1, the number of production completions in the production line and the serial number of the latest product that has been produced are indicated. There has been proposed a production status management apparatus that displays the information.

JP-A-7-98732

However, in the production status management device of Patent Document 1, the scheduled number of completed productions and the serial number of the latest product that has been produced are automatically displayed, but this display is performed at each set time, so-called batch processing. Therefore, it was difficult to immediately grasp the current production status.
The present invention has been made to solve such problems, and an object of the present invention is to provide a production status display device that can immediately grasp the production status of a machine tool.

A production status display device according to the present invention is a device for displaying a production status of a machine tool that outputs a completion signal every time a processed product is produced, and includes a display and a computing device, and the computing device is connected to the machine tool. At the same time, every time a completion signal is output from the machine tool, actual data including the model of the processed product and the time of completion of the processing is created and displayed on the display together with the plan data of the processed product production by the machine tool.
Here, the processing completion time may include a date.

The arithmetic unit can display the result data and the plan data on the display in a graph format representing the relationship of the cumulative number of processed products with respect to time.
The plan data can include setup change time and break time in the production of a plurality of models.
Preferably, the arithmetic device superimposes and displays the cumulative number of processed products based on the plan data at the current time, the cumulative number of processed products based on the actual data, and the difference between these cumulative numbers on the display. In this case, the arithmetic unit can perform the superimposed display of the cumulative number of processed products based on the plan data at the current time, the cumulative number of processed products based on the actual data, and the difference between these cumulative numbers in numerical notation. Furthermore, using a display capable of displaying a plurality of colors, if the cumulative number of processed products based on the actual data is less than the cumulative number of processed products based on the plan data, the difference between these cumulative numbers may be displayed in different colors. .
Moreover, it is preferable that the arithmetic unit displays the latest cycle time of the production of the processed product by the machine tool in a superimposed manner on the display. In this case, the arithmetic unit can perform the superimposition display of the latest cycle time of the work product production by the machine tool by numerical notation. Further, a display capable of displaying a plurality of colors may be used, and when the latest cycle time is larger than a predetermined ratio with respect to the cycle time based on the plan data, the cycle time may be displayed by changing the color.

The arithmetic unit may be configured to draw a graph with different colors depending on the model of the processed product.
Preferably, a data input device connected to the arithmetic device is further provided, and the plan data is input via the data input device. Moreover, the result data and plan data in the period set via the data input device can be displayed on the display.
The computing device can also display the result data and the plan data for each unit time on the display in the form of a table.
Further, the apparatus further includes a data collection device connected between the machine tool and the computing device, sends a completion signal output from the machine tool to the data collection device, and the computing device polls the data collection device to send the completion signal. You may make it acquire.

  According to this invention, every time a completion signal is output from a machine tool, actual data including the model of the workpiece and the time of completion of machining is created and displayed on the display together with the plan data for production of the workpiece by the machine tool. Therefore, it becomes possible to immediately grasp the production status by the machine tool.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
Embodiment 1
FIG. 1 shows the configuration of the production status display apparatus according to the first embodiment. An arithmetic device 2 is connected to a machine tool 1 for producing (working) a processed product. Here, the machine tool 1 sequentially produces a plurality of processed products, but outputs a completion signal to the computing device 2 every time one processed product is produced.
Further, a data input device 3, a memory 4 and a display 5 are connected to the arithmetic device 2, respectively. As the display 5, a color type display capable of displaying a plurality of colors is used.

  Here, the operation of the first embodiment will be described by taking as an example the case where the machine tool 1 continuously produces six types of processed products of models A to F. First, model-specific data is input from the data input device 3 as shown in FIG. This model-specific data is “cycle time (CT)” indicating the time required for the machine tool 1 to produce one corresponding model for each model A to F, and “automatic” indicating whether or not automatic operation is performed. This is data for designating three items of “operation” and “color” indicating a color when drawing a graph. When all of the models A to F perform either automatic operation or do not perform automatic operation, the item of automatic operation may not be provided. When a monochrome display is used as the display 5, for example, a “display pattern” item is provided in place of the “color” item, and the display pattern and thickness (large size) of a line or a point when the graph is drawn. S) etc. may be specified.

  Next, setup change time data is input from the data input device 3 as shown in FIG. This setup change time data indicates the work time required when changing the model. For example, the setup change time from model A to model B is input as 500 seconds. Production in the machine tool 1 is stopped during the setup change time. When only a single model is produced, the setup change time data is not necessary.

  Operation regulation data is input from the data input device 3 as shown in FIG. This operation regulation data is data defining a break time, and the break time is from OFF to the next ON. When the machine tool 1 is operating automatically, the production of the workpiece is continued even during the break time. However, when the automatic operation is not performed, the production of the workpiece is stopped during the break time.

  Furthermore, plan data is input from the data input device 3 as shown in FIG. This plan data consists of three items of “production order” of models A to F, “production number” of each model, and “cumulative number”.

  The above model-specific data, setup change time data, operation regulation data, and plan data are stored in the memory 4 by the arithmetic unit 2. The computing device 2 displays the plan data on the display in a graph format representing the relationship between the accumulated number of processed products with respect to time based on the model-specific data, the setup change time data, and the operation regulation data. At this time, as shown in FIG. 6, drawing is performed in the time axis direction for each model in production order. For example, since the cycle time of model A is 52 seconds based on the model-specific data, a line segment for 38 production units is drawn with a slope increasing by one in 52 seconds from the origin. Thereafter, since the setup change time from model setup time A to model B is 500 seconds, the cumulative number does not increase during this time, and a line segment parallel to the time axis is drawn for 500 seconds. . Furthermore, since the cycle time of the model B is 62 seconds from the model-specific data, a line segment for 90 production units is drawn with a slope increasing by one in 62 seconds. Similarly, a line graph is drawn up to the model F in the final production order.

  Furthermore, the rest time is written in a band shape perpendicular to the time axis based on the operation regulation data. At this time, when the model of the line segment intersecting with the break time, such as model A in FIG. 7, does not automatically operate based on the model-specific data, the production of the processed product is stopped during the break time. The entire subsequent line is translated to the right by the amount of time, and a line segment parallel to the time axis is drawn during the rest period. In addition, when the line segment model that intersects with the break time, such as model B, operates automatically based on the model-specific data, the production of processed products is continued during the break time, so the line graph is moved in parallel. do not have to.

  As described above, the plan data is displayed on the display 5 in the form of a graph. At this time, since the entire plan data including the setup change time and the break time is displayed, the simulation of the production plan is performed here. Therefore, for example, when an unreasonable part is found in relation to the break time, it is possible to correct the plan data in advance so that production proceeds smoothly by changing the production order of each model. .

When production of a processed product in the machine tool 1 is started according to the plan data in this way, a completion signal is output from the machine tool 1 to the computing device 2 every time one processed product is produced. Every time the completion signal is input, that is, every time the completion signal is output from the machine tool 1, the arithmetic device 2 sequentially creates performance data as shown in FIG. The actual data includes “No.” indicating a serial number, “machine base”, “model”, “year / month / day”, and “actual time” for specifying which machine tool 1 is used. . The serial number corresponds to the cumulative number of processed products. The actual time represents the time when the completion signal is input from the machine tool 1, that is, the time when the machining of the workpiece is completed.
When there is only one machine tool 1, the item “machine base” may not be provided. Further, in the case of saving in a different file for each day, the item “year / month / day” may not be provided. Furthermore, if the processing completion time including the date is created as the actual time, the item “year / month / day” becomes unnecessary.

Each time the arithmetic device 2 creates the actual data in accordance with the completion signal input from the machine tool 1, the arithmetic device 2 plots the actual data on the graph on which the plan data on the display 5 is displayed. That is, the point of the color specified by the “color” of the model-specific data is placed at the time of writing as “actual time” and the number of accumulated numbers of “No.”. Thereby, every time a completion signal is output from the machine tool 1, the result data is displayed on the display 5 in real time.
When a black and white type display is used as the display 5, the display pattern and size specified by the “display pattern” of the model-specific data may be provided.
Furthermore, the arithmetic unit 2 sets the cumulative number of processed products based on the plan data at the current time as “plan” and the actual cumulative number of processed products based on the actual data as “actual”, and accumulates these “plan” and “actual”. The difference in the number is displayed as “progress” and is superimposed on the graph on the display 5 in numerical notation.

FIG. 9 shows the screen of the display 5 displayed at the end of the day when production has already been completed as described above. The plan data and actual data for each model are drawn in the colors specified in the item “color” of the model-specific data. By simply looking at the screen of the display 5, it is possible to grasp the entire production status including the setup change time and the break time without directly observing the machine tool 1. In particular, it is easy to visually compare planned data and actual data at each point in time, and problems are immediately revealed based on the difference between planned data and actual data. Can be done. Also, the difference in cycle time for each model is obvious at a glance due to the slope of each line segment, and it is immediately known which model has caused a problem in the past.
Further, at the end of the day, the cumulative number of 1100 “plan” is 1100, the number of “actual” is 1100, and “progress” is 0. This shows that the production was as planned. However, it is possible to grasp at a glance that the production is scheduled to be completed at around 2 am, but has actually been extended to around 6 am.

Further, the arithmetic unit 2 uses the plan data and the actual data to create the production management table that has been used in the past by displaying the plan data and the actual data for each unit time in a table format as shown in FIG. It can also be displayed on the display 5. Since the result data is created every time the arithmetic device 2 inputs a completion signal from the machine tool 1, the number of results in the production management table is updated every time one processed product is produced by the machine tool 1. It becomes.
If any problem occurs, the contents of the problem can be directly described in the “problem” column via the data input device 3, or a plurality of problems that are expected in advance are listed. It is also possible to configure so as to be described in the “Problem” column by selecting a suitable problem from among them.

Embodiment 2
In the graph on the display 5 in the first embodiment shown in FIG. 9, the plan data is drawn with a broken line, but the plan data can also be drawn with a thin line as shown in FIG. By using continuous thin lines instead of broken lines, it becomes possible to grasp the plan data more clearly.
FIG. 11 is a graph depicting plan data and actual data when two types of processed products of model J and model K are continuously produced, and is displayed at the end of the day when production has already been completed. The screen of the display 5 is shown. The cumulative number of “planned” 1320 units was 1,331 of “actual”, and “progress” was 11 units. It is shown that 11 more were produced than planned. In addition, it can be seen that the production is scheduled to be completed after 4 am but has actually been extended to around 7:30 am.

  FIG. 12 shows the screen of the display 5 at 2 am. At this point, production is currently in progress, so there are no actual data after 2 am. At this time, the cumulative number of “actual” was 1019 with respect to the cumulative number of “planned” 1174, and “progress” was −155. It is shown that it is 155 units behind schedule. In this way, if “Progress” becomes a negative value, the numerical value of “Progress” is displayed in red, etc. can do.

In FIG. 12, the latest cycle time of the production of the workpiece by the machine tool 1 is displayed as “CT” on the display 5 in 55 (seconds) and numerical notation. In this way, the current operation status of the machine tool 1 can be immediately grasped by displaying the latest cycle time in numerical notation.
In addition, when the latest cycle time becomes larger than a predetermined ratio with respect to the cycle time based on the plan data, the cycle time can be changed to a red color or the thickness can be changed. This alerts the worker. In addition, the cycle time based on the plan data can be displayed together with the latest cycle time.

  In the graph of FIG. 12, the time axis is expressed as a full scale for one day (24 hours), but the time axis is changed to 2 hours, 1 hour, etc. according to the designation from the data input device 3. It can also be displayed.

Moreover, it is also possible to display the plan data and the actual data in an arbitrary past period in a graph format by designation from the data input device 3. For example, by specifying a period from 2 pm to 3 pm in the graph of FIG. 12, a graph as shown in FIG. 13 is obtained. It is clearly shown that the performance data is plotted for each output of the completion signal from the machine tool 1. At this time, the values of “plan”, “actual result”, “progress”, and “CT” at 3:00 pm are superimposed on the display 5 in numerical notation.
In FIG. 13, the vertical axis representing the cumulative number is created in full scale based on the cumulative number at the time of completion of production based on the plan data. However, according to designation from the data input device 3, A full scale can be set in accordance with the fluctuation range of the cumulative number of plan data and actual data within this period until the time.

Embodiment 3
FIG. 14 shows the configuration of the production status display device according to the third embodiment. This production status display device is obtained by connecting a data collection device 6 between a machine tool 1 and a computing device 2 in the device of Embodiment 1 shown in FIG. The completion signal output from the machine tool 1 is stored in the data collection device 6, and the computing device 2 acquires the completion signal by polling the data collection device 6. Even in such a configuration, as in the first and second embodiments, every time a completion signal is output from the machine tool 1, the arithmetic device 2 can sequentially create the result data and display it on the display 5 in real time. it can.

Embodiment 4
FIG. 15 shows the configuration of the production status display device according to the fourth embodiment. This production status display device is obtained by connecting a data collection device 6 to a plurality of machine tools 1a to 1c in the device of the third embodiment shown in FIG. Each time the data collection device 6 receives a completion signal from each of the machine tools 1a to 1c, the data collection device 6 can identify and identify which machine tool the completion signal is from. For example, a completion signal is stored along with data specifying which machine tool the machine tool is. The computing device 2 acquires a completion signal by polling the data collection device 6 and identifies from which machine tool the completion signal is output, to each of the machine tools 1a to 1c. Separately create performance data and display it on the display 5. By adopting such a configuration, the production statuses of the plurality of machine tools 1a to 1c can be stored in parallel and displayed on the display 5.

  In addition, when the completion signals from the plurality of machine tools 1a to 1c each have a specific signal format and can be identified from which machine tool, the data collection device 6 is used. Instead, the plurality of machine tools 1 a to 1 c may be directly connected to the arithmetic device 2.

In each of the above embodiments, the values of “plan”, “actual result”, “progress”, and “CT” are superimposed and displayed on the display 5 in numerical notation, but the display format is not limited to numbers. Meter display by turning the needle or extending / contracting the bar may be performed.
In the production status display device of the first to fourth embodiments described above, the machine tool 1 is produced not only at the production site, but also at a plurality of locations such as an office and a head office by connecting the arithmetic device 2 to a network such as a LAN. The situation can be displayed in real time.

  The production status display device according to the present invention is a versatile device capable of displaying the production status on various machine tools. Therefore, after connecting this production status display device to the machine tool with the lowest production output in the multi-process production line, identifying the problem and solving it, the machine tool with the next lowest production output It is possible to improve the production output of the entire production line by progressively identifying and resolving the problems of the machine tool, such as connecting to.

It is a block diagram which shows the structure of the production status display apparatus which concerns on Embodiment 1 of this invention. 4 is a diagram showing model-specific data used in Embodiment 1. FIG. FIG. 3 is a diagram showing setup change time data used in the first embodiment. FIG. 3 is a diagram showing operation regulation data used in the first embodiment. It is a figure which shows the plan data used in Embodiment 1. It is a figure which shows the drawing method of plan data. It is a figure which shows the drawing method of plan data. It is a figure which shows the performance data created in Embodiment 1. 3 is a diagram showing a display screen in the first embodiment. FIG. FIG. 3 is a diagram showing a production management table created in the first embodiment. FIG. 10 is a diagram showing a display screen displayed at the end of a day in the second embodiment. FIG. 10 is a diagram showing a display screen displayed at the time of production in the second embodiment. It is a figure which shows the screen of the display which displayed the production condition of the past predetermined period in Embodiment 2. FIG. FIG. 10 is a block diagram showing a configuration of a production status display device according to Embodiment 3. It is a block diagram which shows the structure of the production status display apparatus which concerns on Embodiment 4.

Explanation of symbols

  1 machine tool, 2 computing device, 3 data input device, 4 memory, 5 display, 6 data collecting device.

Claims (15)

A device that displays the production status of a machine tool that outputs a completion signal each time a processed product is produced,
Display,
Each time a completion signal is output from the machine tool when it is connected to the machine tool, actual data including the model of the workpiece and the time of completion of machining is created and displayed on the display together with the planned production data of the machine tool. A production status display device characterized by comprising:   2. The production status display device according to claim 1, wherein the arithmetic device displays the actual data and the plan data on the display in a graph format representing a relationship of a cumulative number of processed products with respect to time.   The production status display device according to claim 2, wherein the plan data includes a setup change time in the production of a plurality of models.   The production status display device according to claim 2 or 3, wherein the plan data includes a break time.   5. The computing device according to claim 2, wherein the accumulated number of processed products based on the plan data at the current time, the accumulated number of processed products based on the actual data, and a difference between the accumulated numbers are superimposed and displayed on the display. The production status display device described in 1.   6. The production status display according to claim 5, wherein the arithmetic device displays the cumulative number of processed products based on the plan data at the current time, the cumulative number of processed products based on the actual data, and a superimposed display of a difference between these cumulative numbers in numerical notation. apparatus. The display can display multiple colors,
7. The production according to claim 5, wherein when the cumulative number of processed products based on the actual data is less than the cumulative number of processed products based on the plan data, the arithmetic device displays the difference between the cumulative numbers in different colors. Status display device.   The said arithmetic unit is a production status display apparatus as described in any one of Claims 5-7 which superimposes and displays the newest cycle time of the workpiece production by a machine tool on the said display.   The production status display device according to claim 8, wherein the arithmetic device performs superposition display of the latest cycle time of work product production by a machine tool in numerical notation. The display can display multiple colors,
The production status display device according to claim 8 or 9, wherein when the latest cycle time is larger than a predetermined ratio with respect to the cycle time based on the plan data, the arithmetic device displays the cycle time by changing the color.   The production status display device according to any one of claims 2 to 10, wherein the arithmetic device draws a graph in a different color depending on a model of a processed product.   The production status display device according to any one of claims 1 to 11, further comprising a data input device connected to the arithmetic device, wherein the plan data is input via the data input device.   The production status display device according to claim 12, wherein the arithmetic device displays the actual data and the plan data in a period set via the data input device on the display.   The production status display device according to claim 1, wherein the arithmetic device displays the actual data and the plan data for each unit time on the display in a table format. A data collection device connected between the machine tool and the computing device;
A completion signal output from the machine tool is sent to the data collection device,
The production status display device according to claim 1, wherein the arithmetic device acquires a completion signal by polling the data collection device.

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