JPS62124856A - Acoustic notification device for NC machine tools - Google Patents

Abstract

PURPOSE:To allow a worker to know the content of the situation or status and take necessary actions even if he is not located near a machine by selectively reading out the corresponding acoustic signal in response to a signal reporting the status occurrence from an NC machine tool and regeneratively outputting it. CONSTITUTION:An acoustic signal memory means stores acoustic signals preset in response to each status. They are PCM (pulse code modulation)-recorded, for instance, and their digital signals are stored. A signal selection means selectively reads out the corresponding acoustic signal from the acoustic signal memory means in response to a signal reporting the status occurrence from an NC machine tool. Titles of musical compositions of message code signals, etc. preset in response to on/off signals of various switches, working processes, pallet numbers, etc. may be used as the status reporting signals. Selection is made in consideration of the priority order of the status reporting signals. An acoustic regeneration device D/A-converts or voice-synthesizes the read-out acoustic signals and regeneratively outputs them.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a reporting device installed in an NC machine tool.
In particular, if a situation occurs that requires operator intervention, such as an abnormality, interruption of work, completion of work, change of work setup, etc.
The present invention also relates to a device that notifies a worker of various situations such as a change in a work process using an acoustic signal.

[Prior Art] NC machine tools sequentially execute various operations according to preset programs. Therefore, there is no need for operator intervention while certain tasks are being performed automatically. However, when an abnormality occurs in a machine, when work is interrupted or terminated, when a work setup needs to be changed, etc., operator intervention may be required. In these cases, workers must take appropriate measures promptly. For this purpose, it is necessary for the worker to immediately know of the occurrence of such a situation.

Furthermore, even during NC automatic operation, it is necessary to inform the operator of the operating status, such as the current work process, in order to understand the overall work flow.

Conventionally, these methods include displaying a lamp on an operation panel, displaying a warning message on a display screen such as a CRT display, and sounding a buzzer.

[Problems to be Solved by the Invention] However, with the first two of these conventional means, if the operator is not located directly in front of the operation panel or display, abnormal situations may occur. The current operating status cannot be known, so the worker must always wait near the device, which has the drawback of limiting the worker's work range. Furthermore, if the operator is not near the device, there is a drawback that there is a delay in noticing the occurrence of an abnormal situation, resulting in a delay in taking action.

On the other hand, in the case of the latter of the conventional means, the abnormality is notified by sound, so even if the worker is not nearby, the worker can notice the occurrence of an abnormality. Since this information cannot be known, there is a drawback that appropriate measures cannot be taken promptly.

Furthermore, since the current situation cannot be easily grasped, it is difficult to predict the next work setup.

The present invention has been made to solve the above-mentioned drawbacks, and is designed to prevent the occurrence of abnormal situations or other situations that require operator intervention, even if the operator is not in front of the operation panel or near the machine, It is possible to report the status of the process, and the scope of work for workers can be expanded.

It is possible to report the details of the situation and situation, allowing workers to take necessary measures quickly.Furthermore, the operating status of each machine can be grasped one by one, and the next work setup can be predicted, improving work efficiency. The purpose of the present invention is to provide an fW reporting device for an NC machine tool that can greatly improve the performance.

[Means for Solving the Problems] The present invention is provided in an NC machine tool, and can be used to prevent abnormalities from occurring that require operator intervention, such as interruption of work, termination of work, or change of work steps. In order to solve the above-mentioned problems in a device that notifies workers of various situations such as changes in the work process or changes in the work process, as shown in Fig. an acoustic signal storage means for storing an acoustic signal; and a signal selection means for selectively reading out a corresponding acoustic signal from the g% signal storage means in response to a signal from the NC machine tool notifying the occurrence of the situation.

A sound reproduction device that reproduces and outputs the above-mentioned read sound signal. It is characterized by being configured with the following.

[Function] In the above configuration, the u4 signal storage means stores the gw signal preset corresponding to each situation.

This acoustic signal includes a melody, a voice message, and the like. For example, these are recorded using PCM (pulse code modulation) and the digital signals are stored.

The signal selection means selectively reads out a corresponding acoustic signal from the acoustic signal storage means in response to a signal from the NC machine tool notifying the occurrence of the situation. These status notification signals include on/off signals for various switches, song titles, message need signals, etc. that are preset in correspondence with processing steps, pallet numbers, etc.Selection of 0 is made in consideration of the priority order of the status notification signals. be able to.

The f'ff reproducing device performs, for example, D/A conversion or audio synthesis on the read MQ91 signal and reproduces and outputs it.

Due to this effect, the present invention can detect the occurrence of ice conditions that require operator intervention due to abnormal situations, or the current status of the work process, etc., even if the operator is not in front of the operation panel or near the machine. can be known through acoustic signals such as melodies and messages.

Moreover, the contents of melodies, messages, etc. can be used to inform the operator of the situation and the situation, allowing the operator to quickly take the necessary measures. The next work setup can be predicted and work efficiency can be greatly improved.

[Example] Embodiments of the present invention will be described with reference to the drawings.

<Configuration of Embodiment> FIG. 2 shows a block diagram of an embodiment of the acoustic notification device of the present invention.

In the same figure, input/output means indicated by numerals 3 to 7 and numerals 8 to 1 are shown.
NC machine tool and its related equipment shown by 9 and 20
-29 of the present embodiment and a central processing unit (hereinafter abbreviated as CPU) 1 which is connected to these via a bus 2 and centrally controls them.

The input/output means includes a keyboard 3, a CRT display 4, a punch tape reader 6 for reading NC control programs written on the punch tape 5, and an input/output interface 7 for these.

The NC machine tool and its related devices include an NC program memory 8, an operation panel 9, a machine body 13, and a pallet loading/unloading device 16. The operation panel 9 is provided with a power switch 10 and an emergency switch 11, which are connected to the bus 2 via an interface 12. The machine body 13 is provided with a home return switch 4 and an alarm switch 15. These are connected to the bus 2 via an interface 19. The pallet loading/unloading device 16 is also provided with a loading signal switch 17 and a pallet identification device 18, which are connected to the bus 2 via the interface 19.

The acoustic notification device of this embodiment has a melody program memory 20 that digitizes and stores preset melodies using PCM, etc., and various signals that are input according to the conditions of the NC machine tool and its related devices. a melody selection circuit 21 that selects a melody representing a melody; an operation circuit 22 that D/A converts and amplifies the melody data from the memory 20 and sends it out as an acoustic signal from a speaker 29; Work piece name data output means 24 for outputting song name data, and N
It is configured to include a process-specific song title data output means 28 for outputting process-specific song title data corresponding to the C-anime program data.

The workpiece-specific song title data output means 24 includes an AND gate circuit 25 that calculates the logical result between the pallet number data and the carry-in signal of the pallet, and a work data memory 27 that stores the song name data in a table format in correspondence with the pallet number data. , AND gate circuit 25 and work data memory 27
The matching circuit 26 is provided to take the matches of - and -. The song title data may be the song title itself, but in this embodiment, the starting address of the area in the melody program memory 20 in which the melody is stored is stored as the song title data.

In addition, the machining process-specific song title data output stage 28 includes a machining process data memory 29 that stores song title data corresponding to the machining process in a table form, and a discrimination circuit 30 that determines the machining process M from the program data. Memory 29 and discrimination circuit 3
A matching circuit 31 for matching with 0 is provided.

<Operation of the embodiment> The operation of the acoustic notification device configured as described above will be explained.

The NC machine tool uses a punch tape reader 6 to read out the punch tape 5 on which the NG program has been written. This data is stored in the NC program memory 8. The CPUI sequentially reads out the addition programs from the memory 8 and sends them to the machine body 13 and the pallet loading/unloading device 16. These devices automatically perform various tasks according to programs. Further, each data in the work data memory 27 and the machining process data memory 29 is set in advance.

In the pallet loading/unloading device 16, when a pallet is loaded, the pallet identification device 8 identifies the number of the pallet. This pallet number data is interface 1
9 and bus 2 to the AND gate circuit 25. Further, the carry-in signal switch 17 detects the carry-in of a pallet, and sends a carry-in signal to the AND gate circuit 25.

Note that it is also possible to detect unloading instead of loading.

The work piece title data output means 24 reads out the piece name data corresponding to the pallet number from the work data memory 27. On the other hand, the AND gate circuit 25 outputs pallet number data when the pallet number data and carry-in signal are input. - The number circuit 26 compares the pallet number data from the work data memory 27 and the pallet number data from the AND gate circuit 25, and outputs work-specific song title data onto the bus 2 when they match.

This piece name data for each work is input to the melody selection circuit 21. A plurality of data are input to the melody selection circuit 21, one data is selected according to a preset priority order, and the melody Φ program Φ memory 2
The 0-selected data sent to 0 functions as an address and specifies the start address of the melody data stored in the memory 20. As a result, melody data is read from the memory 20 and sent to the operation circuit 22.

The operation circuit 22 converts the melody data stored in the digital data format into a musical sound waveform that is an analog signal, amplifies the musical sound waveform, and emits it from the speaker 23 as a melody sound.

As a result, even when the operator is away from the machine, he or she can determine what kind of workpiece is to be machined based on the melody.

Next, the first machine main body 13 processes the carried-in workpiece according to the program from the NC program memory 8.

This poem and the Canadian program are sent to the machine body 13 and at the same time are sent to the discrimination circuit 30. The discrimination circuit 30 discriminates the M code from the Canadian program data. −
The number circuit 31 compares the M code from the machining process data memory 29 and the M code from the discrimination circuit 30, and when the two match, outputs song title data for each machining process.

This song name data for each machining process is input to the melody selection circuit 21, and the melody data is read out from the melody φ program memory 20 in the same manner as the song name data for each workpiece. radiated.

Incidentally, when the song name data by machining process and the song name data by workpiece are input to the melody selection circuit 21 at the same time, one of them is selected according to a preset priority order. In this example, ■ Emergency stop signal, ■ Alarm switch signal, ■
The settings are such that priority is given in the following order: power switch signal, ■ return-to-origin signal, ■ song name data for each workpiece, and ■ song name data for each machining process. Therefore, in the above situation, priority is given to the work title data.

In this way, as the NC program progresses, if the work changes, a corresponding melody is emitted, and if the machining process changes, a corresponding melody is emitted. Therefore, the operator can accurately grasp the progress of the work on the NC machine tool simply by paying attention to changes in the melody. In this case, since the signal is a sound signal, the situation can be grasped even if the operator is not located near the machine tool. Therefore, the worker can accurately understand the work flow, quickly prepare for the next work, etc., reduce waiting time, and improve efficiency.

Moreover, since it is a melody, the atmosphere at the work site is relaxed and work efficiency is improved.

Next, a case will be described in which a signal is output from the machine body 13 or the like.

First, in the machine body 13, the alarm switch 15 is activated due to some abnormal operation, and an alarm switch signal is output. Further, the home return switch 14 is activated and a home return switch signal is output. Assume that these signals are input to the melody selection circuit 21.

In this case 1, for example, even if song name data for each workpiece or song name data for each machining process has already been input, the alarm switch signal or the return-to-origin switch signal is selected preferentially,
The data is sent to the melody program memory 20, and the corresponding melody data is output from the memory 20.

The alarm switch signal and the home return switch signal may be simple on/off signals, but in this embodiment, they are set to be addresses of the melody program memory 20.

This point also applies to an emergency stop signal and a power switch signal, which will be described later.

It is also assumed that the emergency stop switch or the power switch is activated on the operation panel 9, and an emergency stop switch signal or a power switch signal is output and input to the melody selection circuit 21. In this case, for example, even if song name data for each workpiece, song name data for each machining process, alarm switch signal, or return-to-origin switch signal has already been input, the emergency stop switch signal or power switch signal is selected preferentially, and the melody program - The melody data is sent to the memory 20, and the corresponding melody data is output from the memory 20.

It should be noted that the acoustic notification device of this embodiment is provided with a backup battery (not shown) so that the melody can be played even when the power switch is turned off.

In this way, in this embodiment, even if an abnormality occurs in the machine tool, it is prioritized and reported using a melody, so that even if the operator is not constantly monitoring in front of the machine, he or she can be aware of the occurrence of an abnormal situation. Moreover, it is possible to know the outline of the abnormality based on the content of the melody, and to deal with it quickly and accurately.

<Modifications of Embodiments> In the above embodiments, a melody is used as the acoustic signal, but the present invention is not limited to this.

It is also possible to use voice messages.

In this case, instead of the melody program-memory,
Use message memory to store digitally recorded messages.

It is also possible to use a speech synthesizer.

For example, a PCM-recorded phoneme is stored in a memory, and a message is expressed by the address of the phoneme that makes up the phoneme and stored in the message O message. Then, the selected message is expressed as speech by synthesizing its constituent phonemes.

[Effects of the Invention] As explained above, the present invention can detect the occurrence of situations requiring operator intervention such as abnormal situations, or the current work process, even if the operator is not in front of the operation panel or near the machine. It is possible to report the situation, etc., and expand the scope of work for the workers.
It is possible to report the situation and details of the situation, allowing workers to take necessary action quickly.Furthermore, it is possible to grasp the operating status of the machine one by one, predicting the next work setup, and improving work efficiency. This has the effect of significantly improving efficiency.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of the present invention, and FIG. 2 is a block diagram showing an embodiment of the acoustic notification device of the present invention. l...Central processing unit (CPU) 2.0 pass 8...NC program memory 9...Operation panel 10...Power switch 11
...Emergency stop switch I3...Machine body 14...Home return switch 15...Alarm switch 16...Pallet loading/unloading device 17...Carrying switch 18...Pallet identification device 20... Melody-program reference memory 21...Melody selection circuit 22...Operation circuit 23...Speaker 24...
・Work piece name data output means 25...AND gate circuit 26...matching circuit 27...work data memory

Claims (3)

[Claims] (1) If a situation occurs in the NC machine tool that requires operator intervention such as an abnormality, interruption of work, completion of work, change of work setup, etc., or a work process A device for notifying a worker of various situations, such as a change in the conditions, includes a sound and signal storage means for storing preset acoustic signals corresponding to each of the above situations, and a device for notifying the occurrence of the above situations from an NC machine tool. The apparatus is characterized by comprising a signal selection means for selectively reading out a corresponding sound signal from the sound signal storage means in accordance with the signal, and a sound reproduction device for playing back and outputting the read sound signal. Acoustic notification device for NC machine tools. (2) An acoustic notification device for an NC machine tool according to claim 1, wherein the acoustic signal is a melody corresponding to each situation. (3) An acoustic notification device for an NC machine tool that uses the acoustic signal as an audio message corresponding to each situation.