JPH0677892B2 - Failure management control method for machine tools - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a). BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a failure management control method for a machine tool which can search and determine a part required for repair of the failure part when a failure occurs in the machine tool.

(B). Conventional technology Conventionally, in machining centers, lathes, and other machine tools, when a malfunction occurs due to defective parts during operation, a maintenance engineer of the machine tool manufacturer is called and the engineer uses the repair manual. They found a repair point, selected necessary parts from the manual, created a parts order form, and placed an order at the parts center of the manufacturer.

(D). Means for Solving Problems However, such a method has a drawback in that it takes a considerable time from the occurrence of a failure to the actual ordering of parts, resulting in a long downtime of the machine tool. In particular, when the machine tool is installed in a remote place, it takes a lot of time to dispatch the maintenance engineer, which imposes a great physical and economic burden on the user of the machine.

In order to eliminate the above-mentioned drawbacks, the present invention allows a machine tool to determine the parts necessary for repairing the failure from the occurrence of the failure in a short time on the machine tool side without depending on a maintenance engineer. It is intended to provide a management control method.

(D). Means for Solving the Problems That is, the first invention of the present invention is a first memory (13) that stores a failure diagnosis file (DBF) indicating a failure cause (BR) corresponding to each machine operation. ), And for each failure cause (BR) indicated in the failure diagnosis file (DBF), part data (NA) related to the part for recovering the failure.
Second, which stores a parts list file (PL) showing M, PCD)
The memory (11) is provided, and when an abnormal operation is found during the machine operation, the first memory is searched, and the failure cause (BR) corresponding to the machine operation in operation is read to display the means. (3) The second memory (11) is searched based on the cause of failure (BR) input from the input means (5) while being displayed on the screen, and the parts required for recovery from the failure are determined. Is configured as follows.

The second invention of the present invention is provided with a first memory (13) storing a failure diagnosis file indicating a cause of failure corresponding to each machine operation, and the failure indicated in the first memory is provided. A third memory (12) storing a device layout diagram (APD) showing the layout of devices related to the cause is provided, and further, for each failure cause indicated in the failure diagnosis file, for recovering the failure. A second memory (11) storing a parts table file (PL) showing parts data relating to parts is provided, and when an operation abnormality is found during machine operation, the first memory is searched, The cause of failure corresponding to the mechanical operation during operation is read out and displayed on the display means (3), and the cause of failure (BR) is read from the third memory (12).
A device layout diagram (APD) related to the above is read out and displayed on the display means, and the second memory (11) is searched based on the cause of the failure input from the input means (5) to detect the failure. Configured to determine the parts needed to recover the

The third invention of the present invention is the first memory (13) storing a failure diagnosis file (DBF) indicating a failure cause (BR) corresponding to each machine operation, and the failure diagnosis file ( For each failure cause (BR) indicated in the DBF), the part data (NA
Second, which stores a parts list file (PL) showing M, PCD)
The memory (11) is provided, and the connection means (9) for the public line (16) is further provided. When an abnormal operation is found during the machine operation, the first memory (13) is searched. , The failure cause (BR) corresponding to the operating machine operation is read and displayed on the display means (3), and based on the failure cause (BR) input from the input means (5), the second The memory (11) is searched to determine the parts required for recovery of the failure, and the part data of the parts required for recovery of the determined failure is further passed through the public line connection means (9). It is configured to contact the parts supply station (20).

It should be noted that the numbers in parentheses indicate the corresponding elements in the drawings for the sake of convenience, and thus the present description is not limited to the description in the drawings. The following “(e).
The same applies to the column of "action".

(E). Effect With the above-described configuration, according to the present invention, when a malfunction occurs in the machine operation, the failure cause (BR) corresponding to the machine operation is read from the failure diagnosis file (DBF) and displayed, and the operator is based on the display. The machine tool is inspected to find out the cause of failure (BR), and the parts required for recovery from the failure are read from the parts table file (PL) and determined.

(F). Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a control block diagram showing an example of a machine tool to which the present invention is applied, FIG. 2 is a flowchart showing an example of an operation control program, FIG. 3 is a flowchart showing an example of a machine control subroutine, and FIG. 5 is a flow chart showing an example of a parts ordering subroutine, FIG. 5 is a schematic view showing an example of execution code stored in the execution code memory, FIG. 6 is a view showing an example of a failure diagnosis file, and FIG. 7 is a parts table file. FIG. 8 is a diagram showing an example of an order parts file, FIG. 9 is a diagram showing an example of a failure diagnosis screen, and FIG. 10 is a diagram showing an example of a machine layout diagram.

A machine tool 1 such as a machining center or a lathe has a main control unit 2 as shown in FIG. 1, and the main control unit 2 has a display 3, a keyboard 5, a machining data file memory 6, and an order parts file memory. 7, parts order control unit 9,
The execution code memory 8, the system program memory 10, the parts table file memory 11, the device layout file memory 12, the failure diagnosis file memory 13, the machine control unit 15, the buffer memory 21, etc. are connected. A large number of actuators 17 and sensors 19 for controlling the operation of the machine tool are connected to the machine control unit 15, and the parts ordering control unit 9 is freely connected to the parts center 20 of the machine tool maker via the public line 16. Can be connected.

Since the machine tool 1 has the above-described configuration, the main control unit 2 reads the operation control program DMP from the system program memory 10 during machining and operates the machine tool based on the read operation control program DMP. I do. That is, as shown in FIG. 2, the operation control program DMP analyzes the machining data constituting the machining program stored in the machining data file memory 6 in step S1, and the machine tool can execute the machining data. Convert to command code based on EIA / ISO code etc. [In addition, in this embodiment, the machining program (comprised of machining data) stored in the machining data file memory 6 is created by a simple language based on an automatic program. The processing program described above has been described, but it goes without saying that the processing program may be created using EIA / ISO code or the like that can be directly executed by the machine]. Next, the machine control subroutine SUB1 is executed through step S2.

As shown in FIG. 3, the machine control subroutine SUB1 further analyzes the command code analyzed in step S1 in step S3, decomposes and translates into a combination of machine operations, and executes the decomposed machine operation. Each machine operation is executed in order. At that time, the execution code COD for each machine operation is retrieved from the execution code memory 8 and registered in the buffer memory 21. The execution code memory 8 has a fifth
As shown in the figure, the execution code is in the form corresponding to each machine operation.
The execution code COD that stores the COD and corresponds to the analyzed machine operation is immediately known.

Next, in step S5, the main control unit 2 causes, via the machine control unit 15, an actuator 17 corresponding to the analyzed machine operation.
Is controlled to drive the machine tool to perform a predetermined operation. At this time, in the machine control unit 15, in steps S7 and S8, after issuing an operation instruction to each actuator 17, an operation completion signal is input from the sensor 19 provided in a form corresponding to the actuator 17, The time until it is determined that the operation of the actuator 17 is completed is counted.

When the operation completion signal is input from the sensor 19 within the predetermined time and it is determined that the operation is completed, step S9
Upon entering, the main control unit 2 clears the execution code COD stored in the buffer memory until then, and in step S10,
It is determined whether or not the operation instructed by the command code is completed, and if it is not completed, the process returns to step S3, the machine operation to be executed next is analyzed, and the next operation is executed. On the other hand, if the operation completion signal is not input from the sensor 19 within the predetermined time and it is determined that the operation is not completed, the process goes from step S8 to step S11, and a flag that notifies the occurrence of an abnormal situation is stored in the buffer memory. Set at the specified address position in 21.

When the execution of the subroutine SUB1 is completed, the operation control program DMP enters step S12, determines whether or not the abnormality flag is set in the buffer memory 21, and if it is not set, returns to step S1 and then again. , Enter the processing data analysis work and continue execution of the processing program. However, if the abnormality flag is set, step S13 is entered, the execution code COD executed when the abnormality flag is set is read from the buffer memory 21, and the failure cause BR corresponding to the execution code COD is read. Is read from the failure diagnosis file DBF in the failure diagnosis file memory 13 and displayed on the display 3 as shown in FIG. That is, as shown in FIG. 6, the possible failure cause BR is stored for each execution code COD in the failure diagnosis file DBF and corresponds to the machine operation being executed when the abnormality flag is set. As soon as the executed code COD is found, the failure cause BR corresponding to the executed code COD can be read out.

The operator looks at the display of the cause of failure BR on the display 3 and inspects the parts at the relevant part to check if there is any abnormality. The position of the parts to be confirmed is determined by the device layout file memory 12 in step S14. From the above, the device layout diagram APD corresponding to the execution code COD is read out and displayed on the display 3 so that it can be easily recognized. That is, each execution code COD is stored in the device layout file memory 12.
For each, the device layout diagram APD as shown in FIG. 10, which shows the layout of the devices related to the failure cause BR displayed in the failure diagnosis file DBF, is stored, and each device shown in the failure diagnosis file DBF is stored. The device layout diagram APD corresponding to the failure cause BR can be immediately read and displayed corresponding to the execution code COD.

In this way, the operator inspects the machine tool for each failure cause BR shown, while checking the display of the failure cause BR and the device layout diagram APD displayed on the display 3, and checks the operation status of the parts. This operation can be easily performed because the place to be inspected in the device layout diagram APD is displayed on the display 3 together with the sub index number SIN of the failure diagnosis file DBF. As a result of these inspections,
When the cause of failure is specified, the operator instructs the cause of failure BR via the keyboard 5 in step S15 to the main control unit 2 with the execution code COD and the sub index number SIN of the failure diagnosis file DBF shown in FIG. . Fault diagnosis file D
BF contains the execution code COD corresponding to each failure cause BR
Also, since the sub index number SIN therein is displayed, the failure cause BR can be input from the keyboard 5 without causing any trouble.

Next, the operation control program DMP enters the parts ordering subroutine SUB2 and performs the operation of ordering the parts required for recovery from the failure to the parts center. That is, in the subroutine SUB2, as shown in FIG. 4, in step S16, the parts table file PL in the parts table file memory 11 is searched from the execution code COD and the sub index number SIN input by the operator in step S15. , Read the component data such as the component code PCD of the component required for recovery from the failure. In the parts table file PL, as shown in FIG. 7, the cause of failure BR is associated with each execution code COD and sub index number SIN.
The parts that are likely to become the name MAN and the part code P
Required part code PCD as it is stored with CD etc.
Is read immediately.

When the part code PCD is read out, the procedure goes to step S17 to connect the public line 16 with the parts center 20 through the parts ordering control unit 9, and in step S18, the parts code 20 is read out to the parts center 20. The part code PCD is transmitted and the part is temporarily ordered. Next, in step S19, the delivery date of the provisionally ordered component is transmitted from the parts center 20 side, so the delivery date is displayed on the display 3 in step S20, and the operator confirms the delivery date from the keyboard 5. Input a signal. Further, in steps S22 to S24, the operator is instructed via the keyboard 5 to officially order the parts or to cancel the temporary order in step S18. Release it to release the online status with the parts center 20.

Therefore, the process goes to step S26, and the main control unit 2 sets the parts center 2
As shown in FIG. 8, the part name NAM of the part formally ordered to 0 is stored in the order part file OPL in the order part file memory 7 together with necessary data such as the order date and delivery date, and at step S27. , Display the file OPL on the display 3.

(G). EFFECTS OF THE INVENTION As described above, according to the present invention, the first memory such as the failure diagnosis file memory 13 storing the failure diagnosis file DBF indicating the failure cause BR corresponding to each machine operation, the failure diagnosis. For each failure cause BR shown in the file DBF, the part name NA for the part to recover the failure.
A second memory such as a parts table file memory 11 storing a parts table file PL showing parts data such as M and parts code PCD is provided, and when an abnormal operation is found during machine operation, the first Of the failure cause BR corresponding to the machine operation during operation is read out and displayed on the display means such as the display 3, and based on the failure cause BR input from the input means such as the keyboard 5, Since the second memory is searched to determine the part required for recovery from the failure, the machine tool performs everything from the occurrence of a machine failure to the determination of the part required to recover the failure. It becomes possible to perform it immediately after the occurrence of a failure at the site where it is installed, and it is necessary in a short time without the time-consuming work of conventionally calling a maintenance technician from the machine tool maker to find the defective part. Such parts are found, it is possible to reduce the down time of the machine tool minute, efficiently failure processing can be performed even in remote locations.

Further, a third memory such as a device layout file memory 12 storing a device layout diagram APD showing the layout of the devices related to the cause of failure shown in the first memory is provided, and the first memory is searched, When the cause BR of the failure is found, the operator can configure the display device such as the display 3 to read the device layout map APD related to the cause BR of the failure from the third memory and display it on the display unit. By just looking at the displayed device layout diagram APD, you can immediately recognize the part to be inspected and minimize downtime of the machine tool.

Further, a means for connecting the public line 16 such as the parts ordering control unit 9 is provided, and the parts data of the parts necessary for recovery from the failure determined by searching the second memory are immediately input to the parts center.
When the system is configured to contact the parts supply station such as 20, the necessary parts can be ordered immediately without preparing a parts order form, so that extremely convenient and quick failure handling can be performed.

[Brief description of drawings]

FIG. 1 is a control block diagram showing an example of a machine tool to which the present invention is applied, FIG. 2 is a flowchart showing an example of an operation control program, FIG. 3 is a flowchart showing an example of a machine control subroutine, and FIG. 5 is a flow chart showing an example of a parts ordering subroutine, FIG. 5 is a schematic view showing an example of execution code stored in the execution code memory, FIG. 6 is a view showing an example of a failure diagnosis file, and FIG. 7 is a parts table file. FIG. 8 is a diagram showing an example of an order parts file, FIG. 9 is a diagram showing an example of a failure diagnosis screen, and FIG. 10 is a diagram showing an example of a machine layout diagram. 1 ... Machine tool 3 ... Display means (display) 5 ... Input means (keyboard) 9 ... Connecting means (parts order control unit) 11 ... Second memory (parts table file memory) 12 ... Third Memory (device layout file memory) 13 …… First memory (fault diagnosis file memory) 16 …… Public line 20 …… Parts supply station (parts center) 21 …… Memory (buffer memory) BR …… Cause of failure COD …… Execution code DBF …… Failure diagnosis file APD …… Device layout diagram PL …… Parts list file PCD …… Parts data (part code) NAM …… Parts data (part name)

Claims (3)

[Claims] 1. A machine tool that is drive-controlled in such a manner that the contents of the machine operation currently being executed are held in a memory, a first memory storing a failure diagnosis file indicating a cause of failure corresponding to each machine operation, and For each failure cause indicated in the failure diagnosis file, a second memory storing a parts table file showing parts data relating to parts for recovering the failure is provided, and an operation abnormality is found during machine operation. In case the first
Of the memory, the failure cause corresponding to the operating machine operation is read out and displayed on the display means, and the second cause is read based on the failure cause input from the input means.
A failure management control method for a machine tool, which is configured to search the memory and determine the parts required for recovery from the failure. 2. A machine tool that is drive-controlled while holding the contents of the machine operation currently being executed in a memory, and is provided with a first memory that stores a failure diagnosis file indicating a cause of failure corresponding to each machine operation. A third memory that stores a device layout diagram showing the layout of devices related to the failure cause indicated in the first memory, and further, regarding each failure cause indicated in the failure diagnosis file, A second memory that stores a parts table file showing parts data relating to parts for recovering the parts is provided, and if an abnormal operation is found during machine operation, the first memory is used.
Of the memory, the failure cause corresponding to the operating machine operation is read and displayed on the display means, and the device layout diagram related to the failure cause is read from the third memory and the display means is displayed. Based on the cause of failure displayed above and input from the input means, the second
A failure management control method for a machine tool, which is configured to search the memory and determine the parts required for recovery from the failure. 3. A machine tool, which is drive-controlled in a form in which the contents of the machine operation currently being executed are held in a memory, a first memory storing a failure diagnosis file indicating a cause of failure corresponding to each machine operation, and For each cause of failure shown in the failure diagnosis file, a second memory storing a parts table file showing parts data relating to parts for recovering the failure is provided, and further, public line connection means is provided, When an abnormal operation is found during the operation of the machine, the first
Of the memory, the failure cause corresponding to the operating machine operation is read out and displayed on the display means, and the second cause is read based on the failure cause input from the input means.
The memory of the component is searched to determine the component necessary for recovery of the failure, and the component data of the component required for recovery of the determined failure is communicated to the component supply station via the public line connection means. A failure management control method for a machine tool configured as described above.