JPH0635521A - Nc machine tool with self-diagnosing function - Google Patents

Abstract

PURPOSE:To record the diagnostic information and to refer to this information for diagnosis of the next same fault by incorporating a self-diagnostic recording medium into a control panel containing an NC device, a display device, etc., and diagnosing the situations under the guidance of the display device. CONSTITUTION:An NC device 2 which performs the numerical control and a sequencer 3 which performs the sequence control are connected to a machine tool 9 via an interface 1. A control panel 4 provided with a CRT, i.e., a display device is connected to the device 2, and an operator inputs the information to the panel 4. Then the panel 4 operates the tool 9 and the device 2 and also performs the display through the device 2 and the sequencer 3. In a diagnostic mode, a self-diagnostic program is independently driven by a self-diagnostic controller 6. Thus the faults are diagnosed based on the information received from the device 2, the sequencer 3 and the panel 4 together with the inference carried out based on the data recorded on a card 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an NC machine tool having a self-diagnosis function.

[0002]

2. Description of the Related Art Conventionally, a self-diagnosis of an NC machine tool has been conducted by a skilled person who is familiar with the machine tool and the NC device when the machine is stopped and investigated by his / her ability.

However, conventionally, such a diagnosis can be performed only by an expert, and when the power is turned off and the state changes, it is difficult to investigate the cause.
In other words, when a machine breaks down due to a problem, etc., it is often the case that only a person skilled in the machine can grasp the clue to find out in what state it stopped and what caused it. Often only the investigator remembers the procedure for investigating the cause and correcting the
When the same trouble occurs again, you have to search for the person. In addition, if the situation at the time of failure changes, there may be no clues to the failure.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems and provides an NC machine tool with a self-diagnosis function, which enables diagnosis without the need for a skilled person and whose cause can be easily investigated.

[0005]

The present invention, which achieves the above object, provides a machine tool controlled by an NC device,
A recording medium that stores diagnostic rules and data and can be input / output, a display device that displays the recorded contents of the recording medium, various responses, and commands, and execute the recorded contents of the recording medium interactively and And a self-diagnosis control device for outputting.

[0006]

When the machine breaks down and is stopped, the self-diagnosis program is executed by incorporating the self-diagnosis recording medium into the operation panel equipped with the NC device or the display device.
Data for investigating the details of the failure and the cause are displayed on the display device, and the situation is diagnosed while being guided to the display device. Then, the diagnostic information can be answered on the display device. When the cause is identified by the end of a series of work and the machine is restored, the completion of the work is instructed to record information of the series of work on the recording medium for self-diagnosis. Therefore, when the same failure occurs next time, the content thereof is displayed and can be used as a reference.

[0007]

EXAMPLE An example of the present invention will now be described with reference to FIG. In FIG. 1, an NC device 2 for performing numerical control and a sequencer 3 for performing sequence control are connected to the machine tool 9 for moving the machine tool 9 via an interface 1. An operation panel 4 equipped with a CRT, which is a display device, is connected to the NC device 2.
Has an operator input 8. On the operation panel 4 including this CRT, the machine tool 9 and the NC device 2 are operated, and the display from the NC device 2 and the sequencer 3 is performed.

On the other hand, the NC device 2 and the sequencer 3 are connected to the self-diagnosis control device 6. This self-diagnosis control device 6
Is connected to the self-diagnosis card insertion device 5 and the card 7
Information will be exchanged with. Further, on the card 7, diagnostic inquiry display data to be displayed on the CRT, inference rules to be used for diagnosis, and past diagnostic data are written and recorded.

In the diagnosis, the self-diagnosis control device 6 independently drives a self-diagnosis program, and the diagnosis is performed based on the information of the NC device 2, the sequencer 3, and the operation panel 4. That is, the diagnostic inquiry display data recorded on the card 7 is sequentially displayed on the CRT, and the diagnostic data recorded on the card 7 is based on the operator's response to this display and the internal information of the NC device 2 and the sequencer 3. Diagnose according to the rules. In this case, the past diagnostic data recorded on the card 7 is also displayed. In this way, the self-diagnosis control device 6 executes inference based on the data recorded on the card 7 and fixes the cause of the failure. After the diagnosis, the failure result is recorded on the card to be used as a reference for re-failure.

Although a card has been described as a recording medium in the above description, a floppy disk, a cassette tape or the like can be used as the recording medium. Also, as a display device, C
An LED or the like may be applied in addition to the RT.

[0011]

As described above, according to the present invention, only a skilled person as in the prior art can get out of the way, and there is no trouble such as long time machine stoppage and reprocessing due to unknown cause. The machine stop status and the method for pursuing the cause are displayed concretely to make it easy for anyone to understand, and important information is stored by incorporating that information in the dialog operation with the operator. It has a great effect such as being applicable to a machine.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention.

[Explanation of symbols]

 4 Operation panel including CRT 5 Self-diagnosis card insertion device 6 Self-diagnosis control device 7 Card

Claims (1)

[Claims] 1. In a machine tool controlled by an NC device, a recording medium in which diagnostic rules and data are stored and which can be input and output, and a display device which displays the recorded contents of this recording medium and various responses and commands. An NC machine tool with a self-diagnosis function, comprising: a self-diagnosis control device that interactively executes the recorded contents of a recording medium and outputs the contents to a display device.