JPS63113708A - Trouble diagnosing method for machine tool - Google Patents

Abstract

PURPOSE:To give no anxiety to an operator and at the same time to quickly recover the trouble of a machine tool by having input of the maintenance procedures corresponding to each maintenance subject in the form of the character data and producing a data table showing correspondence between the character data and the picture data. CONSTITUTION:The equipment is constituted of a maintenance data producing device 1 is which produces the maintenance data needed for repairs and maintenance based on the result of the trouble diagnoses and a trouble diagnosing device 31 which displays the maintenance data produced by the device 1 in a maintenance mode or a trouble diagnosis mode. Then the maintenance subjects are image picked up for production of the picture data and at the same time the character data which describes the maintenance procedures of subjects are produced and stored. These produced data are set opposite to each other via a data table and both picture and character data corresponding to the maintenance subjects are retrieved and displayed. Therefore the input job of the picture data is simplified and the clear pictures of maintenance pictures are easily obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field 11] This invention relates to a method for diagnosing machine tool failures that improves the efficiency and simplification of maintenance work.

[Prior Art] Machine tools and the like that have numerical control devices have two problems: 1) Mechanical devices have become larger and more complicated; 2) Mechanical devices have become more expensive and maintenance time in the event of a breakdown has become shorter. 3) It has become difficult for maintenance personnel to keep their maintenance skills in line with the technology of the target machine. is increasing.

In general, in this type of fault diagnosis device, the fault diagnosis result is expressed as a two- to three-digit number (fault 1 rare number: hereinafter referred to as DGN).
The first method is to refer to the maintenance manual from this DGN number and perform maintenance. ■Display the fault diagnosis results using the I) G N number. Diagram representing CRT (TV)
A second method is used in which the information is displayed on the screen and maintenance is performed based on this.

[Problems to be Solved by the Invention] The second method described above has the following disadvantages.

■It was difficult to input a diagram showing the location of a failure as data into a failure diagnosis device.

■ Diagrams showing failure locations were often simple and lacked clarity, causing workers to feel uneasy during maintenance and requiring long maintenance times.

The present invention was made against this background, and provides a method for diagnosing failures in machine tools that simplifies the input of a diagram showing the failure location and can clearly indicate the failure location and maintenance method. The purpose is to

[Means for Solving the Problems] In order to solve the above problems, the present invention provides a first step of capturing an image of a maintenance target to obtain image data, assigning a number to the image data and storing it; A second step of inputting a maintenance procedure corresponding to the maintenance target as character data, assigning a number to the character data and storing it, a failure diagnosis number assigned corresponding to the maintenance target, and the image data. and a third process of creating and storing a data table that associates the number of the character data with the number of the character data, and the image data is generated by referring to the data table based on the failure diagnosis number input from an external device or an input device. and character data, and displaying image data and character data corresponding to the maintenance target.

[Operation] According to the present invention, a maintenance target is imaged to create image data, and character data describing a maintenance procedure for this maintenance target is created and stored. Then, a data table is used to associate these data, and the image data and character data corresponding to the maintenance target are searched and displayed. Therefore, the work of inputting image data is simplified, and
A clear image showing the maintenance target can be easily obtained.

[Example] Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

An example of a device for implementing the method of this embodiment is a maintenance data creation device (Fig. 1) that creates maintenance data necessary for repair or maintenance based on failure diagnosis results, and a maintenance data creation device (Fig. and a fault diagnosis device (FIG. 3) that displays maintenance data created by the maintenance data creation device during repair.

Here, the maintenance data consists of image data and character data, and the image data is obtained by imaging the maintenance target and its surroundings with a video camera. On the other hand, the character data mainly consists of sentences describing the maintenance procedure for this maintenance target, and includes instruction data (arrows and frames) that indicate the maintenance target in the image.

The configuration of each of the above devices will be explained below.

A. Configuration of Maintenance Data Creation Device (FIGS. 1 and 2) In these figures, 1 is a processing section consisting of a microcomputer, and includes an image processing section IO and a control section 20.

The image processing section 10 includes a camera 2, as shown in FIG.
An A/D converter II that converts the image signal (analog signal) supplied from the computer into image data (digital signal), and an image memory that stores this image data! 2, a character memory 13 that stores each character of character data in the form of a dot pattern, a video controller 14 that controls the image memory 12 and the character memory 13, and the output of the image memory 12 or the character memory I3. and a D/A converter 16 that converts the output of the image demultiplexer 15 into an analog signal and supplies it to the monitor television 3.

In the image memory 12, as shown in FIG. 4, each byte corresponds to each dot on the display screen of the monitor television 3 or the manual screen from the camera 2, and the brightness of the h dot is determined by the agricultural data. I remember it as such.

Figure 4 shows 256 horizontal dots, 256 vertical dots, and shading data of 8.
The configuration of the bits is shown. Thereby, 256 gradations of D light can be expressed. Note that in the above configuration, the dots in the horizontal direction are rough and the grayscale image becomes unclear, which may make it difficult to see fine parts. In that case, increasing the number of horizontal dots does not affect the gist of the invention.

The character memory 13 has a memory capacity corresponding to the dots on the television screen. This character memory 13 stores maintenance data displayed on the TV screen.
It is expanded into a dot pattern and stored at the address corresponding to the display position. Then, it is superimposed on the image data in the image memory 12 and displayed on the monitor television 3. FIG. 5 shows this state. An image 3a is displayed on the left side of the TV screen, and the maintenance target 3b is indicated by the arrow 3.
It is indicated by C. Further, on the right side of the screen, a maintenance procedure 3e using character data is displayed. In addition,
On the screen, 3d is a cursor.

The image demultiplexer 15 superimposes an image based on image data and a character based on character data. Either the contents of the 0 image memory 12 and the contents of the character memory 13 are output alternately to form the same screen due to the afterimage effect of the TV screen, or the data of each is read out simultaneously and D/A conversion is performed. vessel 16
and combine them in the analog data section to form the same screen.

Next, the control section 20 controls the video controller 14 to erase or rewrite the memory contents of the image memory 12 and character memory 13, as well as execute various processes to be described later.

This control unit 20 is a CPU 2 of a microcomputer.
+ and ROM2 that stores the program of this CPU21.
2, and RΔM23 for storing various data. The control unit 20 is connected through each interface.
A keyboard 5 and an external memory drive device 6 are connected, and a floppy disk 7 is attached to the external memory drive device 6. The created maintenance data is then stored on this floppy disk 7.

B. Configuration of failure diagnosis device (FIG. 3) The configuration of this device is almost the same as the data creation device described above. (The only difference in terms of structure is the following.

0 said camera 2 for capturing image data, and A
/I) There is no converter 11.

(14) The result of the diagnosis executed by the control device (sequencer) 8 is sent to the processing unit 31 as a DGN number (discarded) via an interface (not shown).

In this way, the failure diagnosis device includes the processing section 31, the monitor television 33, the keyboard 35, and the external memory drive device 36.
The floppy disk 7 is attached to an external memory drive device 36. Furthermore, the processing section 31 is composed of an image processing section 40 and a control section 50, which are shown in FIG.
It has the same configuration as the image control unit IO and the control unit 20 (excluding the A/D converter 11 of the image control unit IO).

Next, the present invention will be described in detail in relation to the operation of the apparatus having the above configuration with reference to the flowcharts of FIGS. 6 and 7.

This embodiment is roughly divided into two stages: a stage of creating maintenance data consisting of image data and character data, and a stage of searching and displaying these data.

The following will explain these steps separately.

(+) Creation of maintenance data Creation of maintenance data is performed by the maintenance data creation device shown in FIG. Note that this operation is executed by the CPU 2+ according to the program stored in the IIOM 22 of the control unit 20 shown in FIG.

ItΔiVf 23 should be used as a buffer in this process.

There are two modes for creating maintenance data: an image data collection mode and a character data creation mode, and this mode selection is made from the keyboard 5. After selecting the mode, perform each operation,
Collects image (′ρ data, creates character data, etc.)

0 Collection of image data This is the process of taking an image of a place or part that requires maintenance (maintenance target) and obtaining the image data.

First, when an image data collection mode is selected using the keyboard 5 and an instruction is given to capture the image data from the keyboard 5 (step 5PI in FIG. 6), the CPU 2t instructs the video controller 14 to capture the image. As a result, the image captured by the camera 2 is taken into the image memory 12 as image data (step 5P2).

The contents of the image memory 12 are then displayed on the monitor television 3.

Next, the image data number Gmm is inputted from the keyboard 5, and this number Gmm is added as an index to the collected image data and stored in the floppy disk 7 (step 5P3). Thereafter, similar operations are repeated to collect necessary image data for all maintenance targets and create image data files. In this way, when the collection of image data necessary for creating maintenance data is completed, data indicating this is entered manually from the keyboard 5, and the CPU 21
detects this (step 5P4) and proceeds to the next step.

■ Creation of character data Next, press the cross key provided on the keyboard 5 for the character data creation mode to select the mode.

After that, similarly from the keyboard 5, each image data item Gm
Enter m. As a result, the CPU 21 continues to transfer the image (ψ data) corresponding to the manually entered image data number from the floppy disk 7 to the image memory 12 and displays it on the monitor television 3 (step 5P5). For example, a limit switch failure For diagnosis, image data showing the limit switch is called up.

Next, using the keyboard 5, the position on the TV screen where the target part is displayed is determined by cursor operation, etc., and an arrow or a rectangular frame indicating the target part is stored in the RAM 2 as instruction data.
Store in g. At the same time, the instruction data is stored in the character memory 13 in a dot pattern (step S
1) 6). Note that dot patterns such as arrows are RO.
Please remember it on M22.

On the other hand, maintenance effort 3e (Figure 5), which is the main component of character data,
is input using the cursor operation and the keyboard 5. This content is stored in the character memory 13 for display and is also placed in the fl A M 23 at the same time. Furthermore, when the data is stored in the RAM 23, data indicating the position on the screen is added. Zunaichi, the character data stored in the character memory 13 and r? Is the content the same as the character data stored in AMI2?
The data stored in RAM I 2 has a storage capacity of 11? i, the character code is recorded as it is and with data indicating the screen position added, whereas the data stored in the character memory I3 is expanded into a dot pattern. And be recorded corresponding to the (-L position) on the screen.

In this way, input the character data from key)・'5,
When the input is completed, enter the completion code and instruct the character data to be imported to the disk 7 (iJY).
Step 5P7).

Thereby, the CPU 21 adds the character data number D nnn to the character data stored in the RAM 23 and writes it to the floppy disk 7 (step SI).
8'). Note that the character data number 1)nnn is input from the keyboard 5. Further, the storage operation on the floppy disk 7 is also instructed from the keyboard 5.

Next, It A! Vl 23 J: 2 provided I
) In the N data table 60, the image data number Gmm and the character data number D n are made to correspond to the DGN number.
nn and are sequentially stored as shown in FIG. 8 (step 5P9).

In this way, the character data regarding each maintenance object is created (Steps SP5 to SP9), and when the creation of the character data is completed, a completion code is entered manually from the keyboard 5. When the CPU 21 detects the completion code (state 5
t) 10), It A M 23 J 21 J self ↑ The pressed D G N data table 60 is written to the floppy disk 7 (step S [ ) 11), and the creation of maintenance data is completed.

(2) Display of maintenance data There are two ways to use maintenance data for maintenance or failure diagnosis of machine tools.

■Receive the DGN number output as a diagnosis result from an external failure diagnosis device (corresponding to machine control device 8 in Figure 3),
The corresponding maintenance data is read from the floppy disk and displayed on the monitor TV.

■ Manually input the maintenance number corresponding to the DGN number from the keyboard, read out the corresponding maintenance data in the same way as in ■, and display it on the monitor TV.

In either case, the 8th
The image data number and character data number are extracted from the DGN data table 6o in the figure, and the corresponding image data and character data are called. These data are written to the image memory and character memory. As shown in FIG. 5, parts to be repaired or maintained are displayed in grayscale images on the monitor television 33 based on the image data. In addition, the repair or maintenance method for the maintenance target is displayed on the television screen based on character data, allowing the operator to perform maintenance work efficiently.

The process will be explained in more detail below with reference to the flowchart shown in FIG.

After turning on the power of the failure diagnosis apparatus shown in FIG. 3, the floppy disk 7 prepared in the above item (1) is inserted into the external memory drive device 36. Then, I) GN data table 6 is transferred from the floppy disk 7 to the RAM of the control unit 50.
0 is read (step 5r21).

Next, it waits for human input from the keyboard 35 or the sequencer 8 (activation of maintenance data display). That is, it waits for input of the DGN number from the sequencer 8 or the maintenance number (corresponding to the DGN number) from the keychain 35 (step 5P22.23).

When the DGN number is input, the DGN data table 60 is searched using this I)GN number, and the image data number Gmm and character data number D corresponding to the DGN number are searched.
nqn, and the corresponding image data and character data are transferred from the floppy disk 7 to the R of the control unit 50.
A M (step S+) 24).

The read image data has exactly the same data structure as the image memory 2, so it is supplied as is to the image memory in the image processing department 40 and displayed on the monitor television 33 (
Step SP25). On the other hand, character data contains codes such as display [11J] position and delimiter because the memory capacity is reduced. While executing each of these processes, the character memory in the image processing section 10 is sent out and displayed on the monitor television 33 (step S P26).

If the maintenance or diagnosis can be completed using only the screen displayed in step 2, the process should be terminated (step S+) 27).

On the other hand, if it is necessary to change the screen and inspect other parts, the instructions can be manually entered in advance in the comments on this screen when creating the data.

By referring to this comment and inputting a number from the keyboard 35 (step 5P23), a corresponding screen will be displayed using the same process as above.

Repeat the above steps to obtain the necessary maintenance data on the monitor TV 33.
Read the screen from page 2 and proceed with the diagnosis.

In the above embodiment, a floppy disk is used as the storage medium for T in the maintenance data storage, and other storage media (as long as 4 tons per side are satisfied (practical). For example, If the failure diagnosis device has a storage device such as a large-capacity disk, data can be transferred and stored in the storage device using tape or other means such as communication.

[Effects of the invention]: As explained above, the present invention creates image data by capturing an image of a maintenance target with a camera, stores each image (tρ data with a number), and stores each image (tρ data) with a number. The maintenance procedures corresponding to the home are manually written as character data, each character data is memorized with an Otsu number, and the number assigned to the maintenance target is
Since a data table is created and stored to indicate the correspondence between the numbers assigned to image data and the numbers assigned to character data, the next effective prefecture can be written as i-hiro.

1) The camera takes a Y-eye image and displays on the TV screen the areas to be repaired and the order of maintenance, so that the maintenance procedure is shown in accordance with the image that matches the actual item. Therefore, it is possible to expect quick recovery without causing any anxiety to the workers.

2) Since diagrams (images) showing repair points can be easily obtained, easy-to-understand maintenance manuals can be created by incorporating many diagrams.

3) There is a possibility that maintenance can be performed even on work sounds that do not have the ability to understand drawings, etc.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of a maintenance data creation device according to an embodiment of the present invention, FIG. 2 is a block diagram showing the configuration of a processing section of the maintenance data creation device, and FIG. A block diagram showing the configuration of such a failure diagnosis device, FIG. 4, is an image memory! 2 is a conceptual diagram showing the configuration of 2, FIG. 5 is a schematic front view showing an example of a television screen in the same embodiment, FIG. 6 is a flowchart for explaining the method of creating maintenance data in the same embodiment, and FIG. 7 is a FIG. 8 is a flowchart for explaining operations during maintenance or troubleshooting in the same embodiment, and is a conceptual diagram showing the structure of a DGN data table. 2...Camera, 3.33...Monitor TV, 5.35...Keyboard (input device),
7...Floppy disk, 8...Machine control device (external device), 12...
...Image memory, 13...Character memory, 60...DGN data table.

Claims (1)

[Scope of Claims] A first process of capturing an image of a maintenance target to obtain image data, assigning a number to the image data and storing it, and inputting a maintenance procedure corresponding to the maintenance target as character data; a second step of assigning numbers to the character data and storing them; and creating a data table that associates the failure diagnosis number assigned corresponding to the maintenance target, the number of the image data, and the number of the character data. A third step of creating and storing image data and searching for image data and character data by referring to the data table based on the fault diagnosis number input from an external device or input device, and creating image data corresponding to the maintenance target. and a fourth step of displaying character data.