JP2003022129A - Management device of machine tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a management device of a machine tool capable of predicting and transmitting presence/absence of necessary tools, arrival of tool life and an arrival state of an inspection period of inspection items. SOLUTION: The management device is provided with work execution instructing means (MTM, 5, 7) to instruct a worker to perform corresponding works (for example, a replenishing work of the tools running short of, a replacing work of the tools reaching their lives and a replenishing work of lubricating oil, etc.), before starting the processing when tools judged to run short of, tools judged to reach their lives during a processing or inspection items judged to reach the inspection period during the processing exist regarding a certain processing. An outside reporting means (MTM, 6) to report a fact that no work is completed to a portable terminal 10 when no work is completed at a point of time when fixed time elapses is provided. Interruption of the processing due to such events during the processing is prevented. A manager can recognize an improper state of the machine tool in real time even at a remote place and immediately perform a proper processing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention checks the presence of necessary tools, the presence of tools that reach the end of their lives during machining, and inspection items such as cutting water and lubricating oil prior to actual machining with a machine tool. And a management device for machine tools that can notify the manager before processing.

[0002]

2. Description of the Related Art In conventional machine tools, inspection items such as the presence or absence of required tools, the end of tool life, supply of cutting water and lubricating oil, cleaning of cutting water filters, etc. are managed individually regardless of machining. It had been. Therefore, during machining, if the necessary tools are not available, the NC device instructs the operator to replenish the tools, and when a tool reaches the end of its life, the NC device removes the tool. Since the tool life has been reached, the operator is instructed to replace the tool with a new tool, and when the regular supply time of cutting water is reached, an instruction to replenish cutting water is similarly issued.

[0003]

However, when there is no necessary tool, the tool life has expired, or the inspection item reaches the predetermined inspection time, the operator is irrespective of whether or not machining is in progress. On the other hand, a corresponding work instruction was issued, and the processing was sometimes interrupted. This increases idle time and makes it impossible to operate the machine tool efficiently.

In view of the above circumstances, the present invention predicts in advance the presence or absence of necessary tools, the arrival of tool life, the arrival of the inspection time for cutting water, lubricating oil and other inspection items before the start of machining by a machine tool, It is an object of the present invention to provide a machine tool management device that can be transmitted to workers and the like.

[0005]

According to a first aspect of the present invention, regarding machining to be executed by a machine tool, presence / absence of necessary tools, presence / absence of tools that reach a life during machining, and presence / absence of necessary inspection items in the machine tool. A machining management means (MTM, 3, 5, 7) is provided, and a tool determined by the machining management means to be insufficient in executing machining, a tool determined to reach a life during machining, or When there is the necessary inspection item that is determined to reach the inspection time during machining, the worker is required to perform corresponding work (e.g., supplementary work for insufficient tools, before starting machining).
Work execution command means (MTM, 5, 7) for instructing to perform life tool exchange work, lubricating oil replenishment work, etc. is provided, and the work execution command means outputs a work command to the worker. After a certain period of time, if the work is not completed, the external reporting means (M) for notifying to the external mobile terminal (10) via the communication line (11).
TM, 6) is provided.

According to a second aspect of the present invention, a tool required time acquisition means (step S7 of the machine tool management program MTM, for acquiring a use time of the tool to be used in the machining to be executed in the machine tool in the machining). 5) is provided, and a tool remaining time acquisition means (steps S8 and 5 of the machine tool management program MTM) for acquiring the remaining tool life time of the tool is provided, and is acquired by the tool necessary time acquisition means. Judging whether the tool will reach the end of its life during processing from the usage time of the tool used in the machining executed by the machine tool and the remaining time of the tool acquired by the tool remaining time acquisition means. Tool life judgment means (machine tool management program MTM
Steps S9 and S10, 5) are provided, and when the tool life determining unit determines that the tool will reach the end of its life during processing, the operator is instructed to replace the tool before the start of processing. Tool change command means (step S11 and step S1 of the machine tool management program MTM
2, 5) are provided, and when a tool exchange is not performed after a certain time has elapsed after the exchange instruction by the tool exchange instruction means is output, an external mobile terminal (10) is provided via the communication line (11). To external reporting means (steps S18 to S of the machine tool management program MTM)
23, 6) are provided.

According to a third aspect of the present invention, a management required time acquisition means (steps S13 and S7 of the machine tool management program MTM) for acquiring the management required time required for machining to be executed by the machine tool is provided. With respect to the inspection item to be inspected, a management remaining time acquisition means (steps S14 and S7 of the machine tool management program MTM) for acquiring the management remaining time until the predetermined inspection time is provided, and is acquired by the management required time acquisition means. Based on the required management time and the remaining management time acquired by the remaining management time acquisition means, it is determined whether or not the inspection item reaches a predetermined inspection time during machining by the machine tool. The step S15, 7) of the machine management program MTM is provided, and the inspection item reaches a predetermined point during processing by the management time arrival determination means. When it is determined to reach the time, the corresponding maintenance work, maintenance work command means (machine management program MTM step S16 in which the command to the operator before starting the processing, step S
17, 7) are provided, and when the maintenance work is not completed at the time when the maintenance command has been output by the maintenance work command means and a predetermined time has elapsed, an external mobile terminal ( External reporting means (machine tool management program M
The TM steps S18 to S23, 6) are provided.

[0008]

According to the first aspect of the invention, the machining management means determines whether or not there is a required tool, whether or not there is a tool that reaches the end of its life during machining, and necessary inspection items for the machining to be executed by the machine tool. The work execution command means (MTM, 5, 7) that determines the presence or absence of the tool is determined to be insufficient when performing machining, the tool that is determined to reach the end of its life during machining, or the inspection time is reached during machining. If there is a necessary inspection item that is determined to be
Before starting machining, you are instructed to perform the corresponding work (for example, replenishment of insufficient tools, replacement of life tools, replenishment of lubricating oil, etc.). The interruption is prevented in advance, and efficient processing becomes possible.

Further, the external reporting means (MTM, 6) notifies the external portable terminal (10) via the communication line (11) when the work is not completed after a certain period of time. Therefore, the administrator can recognize the inconvenient state of the machine tool in real time even in a distant place, and can immediately perform an appropriate process.

According to a second aspect of the present invention, the tool life determining means (steps S9 and S10, 5 of the machine tool management program MTM) is the processing which is acquired by the tool necessary time acquiring means and is to be executed by the machine tool. From the usage time of the tool to be used and the remaining time of the tool acquired by the tool remaining time acquisition means, it is determined whether or not the tool reaches the end of its life during machining, and the tool replacement command means (working Machine management program MTM step S
11 and steps S12, 5) instruct the operator to replace the corresponding tool before the start of processing, so that it is possible to prevent the tool from reaching the end of its life and being interrupted during processing.
It enables efficient processing.

External reporting means (steps S18 to S23, 6 of the machine tool management program MTM)
However, when the tool change is not performed after a certain time has elapsed since the replacement command was output, the administrator notifies the external mobile terminal (10) via the communication line (11), so the administrator can use the machine tool. The inconvenient state of can be recognized in real time even in a remote place, and accurate processing can be immediately performed.

According to a third aspect of the present invention, the management time arrival determining means (step S15 of the machine tool management program MTM,
7) determines whether or not the inspection item reaches a predetermined inspection time during machining by the machine tool from the management required time and the remaining management time, and maintenance work command means (step S16 of the machine tool management program MTM). , Step S1
7, 7) can instruct the operator to perform the corresponding maintenance work before the machining is started, so that the machining can be prevented from being interrupted during the machining due to the periodic inspection of the machine tool. It enables efficient processing.

External reporting means (steps S18 to S23, 6 of the machine tool management program MTM)
However, if the maintenance work is not completed at the time when a certain time has elapsed after the maintenance command is output,
Since the notification is sent to the external mobile terminal (10) via the communication line (11), the manager can recognize the inconvenient state of the machine tool even in a remote place in real time, and immediately. Accurate processing can be performed.

The numbers in parentheses are for convenience of showing the corresponding elements in the drawings, and therefore the present description is not limited to the description in the drawings.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing an example of a machine tool management apparatus to which the present invention is applied, and FIGS. 2 and 3 are flowcharts showing an example of a machine tool management program.

As shown in FIG. 1, the machine tool management apparatus 1 has a main control unit 2, and the main control unit 2 has a bus wire 4 therein.
Via the NC device 3, which drives each control axis of the machine tool and drives and controls the auxiliary machine, the tool management unit 5, the communication control unit 6,
The maintenance management unit 7, the processing instruction sheet memory 9, and the like are connected. The mobile terminal 10 is connected to the communication control unit 6 via a communication line 11 such as a wired / wireless public communication line. Although the management device 1 is integrated with the NC device 3 in the housing of the machine tool, the management device 1 and the NC device 3 do not necessarily have to be integrated with each other.

Since the machine tool management apparatus 1 has the above-described configuration, the machine tool for processing the contents to be machined by the machine tool via a keyboard, a magnetic disk, a data communication line, etc. (not shown). The instruction sheet MI is input to the management device 1 and stored in the processing instruction sheet memory 9.

The machining instruction sheet MI is created by a machining control center or the like that manages the machining schedules of a plurality of machine tools. As shown in FIG. 2, the workpiece part number NO, the work number WN, and the schedule of the workpiece to be machined from now on. Processing number NB, 1
The machining time TM per piece, the machine number used UM indicating the machine tool used for machining (in this case, the machine tool number provided with the management device 1), the scheduled machining start time ST, the scheduled machining end time ET, etc. Composed of data.

Prior to processing, the management device 1 determines, based on the processing instruction sheet MI stored in the processing instruction sheet memory 9,
Calculate the management time arrival status of each management item that is expected when machining is performed with a machine tool.

That is, the main control unit 2 of the management device 1 reads out the machine tool management program MTM shown in FIGS. 2 and 3 from a memory (not shown), and in the step S1, the tool management unit 5 is instructed to start machining. It is instructed to read and acquire the machining instruction sheet MI for the workpiece to be machined from the machining instruction sheet memory MT.

The tool management unit 5 enters step S2, and uses the work number WN indicated in the read machining instruction MI to the NC device 3 in the machining program used when machining the workpiece. In addition to instructing to extract and acquire tools, in step S3, the NC device 3 is instructed to acquire and transmit a list of all tools stored in the tool magazine of the machine tool.

In step S4, the tool management section 5 compares the tool transmitted from the NC device 3 and scheduled to be used in the machining program with the tool stored in the tool magazine of the machine tool to compare the machining program. When executing the machining of the work, it is determined whether or not there are insufficient tools.

If it is determined that there is a shortage of tools, the tool management unit 5 enters step S5 and prompts the operator to replenish the shortage of tools during machining. Is insufficient. Please add a tool. "Is generated and transmitted to the worker via a display, a speaker, etc. (not shown) in step S6.

If it is determined in step S4 that there is no shortage of tools, and if the process of step S6 is completed, step S7 is entered and the tool management section 5 instructs each tool to be used by the machining program. For the tool, the usage time for executing the machining program is the tool required time N
Get as T.

Next, in step S8, the tool management unit 5
Acquires the tool remaining time RT of the tool life of the tool used in the machining program, that is, the tool stored in the tool magazine and used in the machining program, from the tool file of the NC device 3.

Next, step S9 is entered and step S
The tool required time NT obtained by comparing the tool required time NT acquired in 7 with the tool remaining time RT of the tool life in the tool magazine
Exceeds the tool remaining time RT and determines whether or not the tool will reach the end of its life during machining of the workpiece for each tool used in the machining program.

For a tool determined in step S9 in which the tool required time NT exceeds the tool remaining time RT and the tool will reach the end of its life during machining of the work, step S1
The process goes to 0, and it is determined whether or not a spare tool of the tool whose life is approaching is stored in the tool magazine.

If the spare tool of the tool whose life is approaching is not stored in the tool magazine, step S1
Entering 1 and prompting the operator to replace the tool whose life is imminent, a message such as "The tool of the end mill 10φ will reach the end of life after the machining of 5 pieces. Please replace the tool." Is generated and transmitted to the worker via a display, a speaker or the like (not shown) in step S12.

In step S9, if the tool required time NT is less than the tool remaining time RT and it is determined that there is no tool that will reach the end of its life during machining of the workpiece, or in step S10 the spare tool in the tool magazine. Is stored, and when the processing of step S12 is completed, the main control unit 2 causes the main tool control unit 2 to execute the step S of the machine tool management program MTM.
In step 13, the maintenance management unit 7 is instructed to acquire the time required to complete the machining from the machining instruction MI as the management required time MT.

Next, the maintenance management section 7 enters step S14 and an appropriate management file MF in the NC device 3 is entered.
For the registered inspection items, the remaining management time RT1 until the next periodic inspection is acquired.

The inspection item CI in the management file MF includes
As shown in FIG. 3, for example, there are various items such as replenishment of lubricating oil, replenishment of cutting water, cleaning of cutting water filter, and grease increase of the chuck, and an inspection at the time of regularly managing each item. The time interval is stored as the target time IT, and the elapsed time from the previous inspection is stored as the current time PT.

Therefore, in step S15, the maintenance management unit 7 requires the management required time MT until the processing is completed.
Then, the difference between the target time IT and the current time PT, that is, the remaining management time RT1 is compared, and the required management time MT until the machining is completed is larger than the remaining management time RT1. , If any of the processes reach the control period during processing and it is determined that inspection is required,
Step S16 is entered.

In step S16, the operator is urged to inspect the control item whose control time is imminent, "The cutting water will be insufficient after the completion of machining of eight pieces. Please replenish the cutting water." And the like are generated and transmitted to the worker through a display, a speaker and the like (not shown) in step S17.

In step S15, the management time MT until the machining is completed is shorter than the management remaining time RT1, and none of the inspection items CI reaches the management time during the machining,
If it is determined that it is not necessary to check, and step S
When the process of 17 is completed, the process goes to step S18, and the main control unit 2 performs the work instructed to the worker in step S6, step S12, step S17, etc., that is, the replenishment work of the insufficient tool, the replacement of the life tool. It is determined whether or not the work and the necessary check items CI are all checked.

If all the work is completed, the machine tool management program MTM ends, but if not completed, step S19 is entered to prompt the worker to execute the instructed work. Generate a message such as "Please process all instructed items immediately."
The information is transmitted to the operator via a display, a speaker or the like not shown at 21.

Thereafter, the main control section 2 waits for a fixed time until the worker completes the work (step S22), and if the work is not completed even after the fixed time elapses,
In step S23, the management item to be managed before processing, that is, to the mobile terminal 10 via the communication control unit 6,
Report that the lacking tools have not been replenished, the lifespan tools have been replaced, and the inspection items CI have not been properly implemented. Mobile terminal 1
Since 0 is usually possessed by the manager, etc., the manager such as the manager can immediately recognize in real time that an inconvenient management situation has occurred in the machine tool.

In this way, the machine tool management program MTM
Causes the machine tool management device 1 to
Predicting the arrival of a tool that has reached the end of its life, the arrival of the inspection time for the inspection item CI, etc., based on the processing program that should be executed, etc., prior to the start of actual machining by a machine tool, and replacing the service life tool or supplementing the insufficient tool It becomes possible to urge the worker to perform work, cutting oil replenishment work, etc. before the start of processing. As a result, in actuality, a shortage of tools may occur during machining, the tool may reach the end of its life, or various inspection items CI may come to the inspection time, resulting in interruption of machining. It can be prevented.

In order to determine the tool life and the arrival of the inspection time for each inspection item, in addition to the time as in the above case, the number of workpieces to be machined is regarded as a constant time unit. It is also possible to judge from the number of processed workpieces.

[Brief description of drawings]

FIG. 1 is a block diagram showing an example of a machine tool management apparatus to which the present invention is applied.

FIG. 2 is a flowchart showing an example of a machine tool management program.

FIG. 3 is a flowchart showing an example of a machine tool management program.

[Explanation of symbols]

3 ... Machining management means (NC device) 5 ... Machining management means, work execution command means, tool required time acquisition means, tool remaining time acquisition means, tool life determination means,
Tool change command means (tool management section) 6 ... External reporting means (communication control section) 7 ... Machining management means, work execution command means, required management time acquisition means, remaining management time acquisition means, management time arrival determination means, Maintenance work command means (maintenance management unit) 10 ... mobile terminal 11 ... communication line MTM ... machine tool management program

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hajime Ohashi             Aichi Prefecture Oguchi-machi Oguchi-machi Large-scale small-scale character boarding number 1               Yamazaki Mazak Co., Ltd. Head Office Factory (72) Inventor Koji Matsumoto             Aichi Prefecture Oguchi-machi Oguchi-machi Large-scale small-scale character boarding number 1               Yamazaki Mazak Co., Ltd. Head Office Factory F-term (reference) 5H223 AA06 CC06 DD09 EE06 EE30                       FF08                 5K067 AA44 BB04 BB21 FF02 FF05                       GG01 GG11 HH05

Claims (3)

[Claims] 1. With respect to machining to be executed by a machine tool, a machining management means is provided for judging presence / absence of a required tool, presence / absence of a tool reaching a life during machining, and presence / absence of a necessary inspection item in the machine tool, When there is a tool determined by the machining management means to be insufficient when performing machining, a tool determined to reach the end of its life during machining, or the necessary inspection item determined to reach the inspection time during machining In addition, a work execution command means for instructing the worker to perform a corresponding work before starting the machining is provided, and the work command by the work execution command means is output to the worker and fixed. When the work is not completed when the time has passed, the machine tool management device is configured by providing an external reporting means for notifying the external mobile terminal via the communication line. . 2. A tool required time acquisition means for acquiring a usage time of a tool to be used in a machining to be executed in a machine tool from now on is provided, and the remaining time of the tool life of the tool is acquired. By providing the tool remaining time acquisition means, the tool remaining time acquisition means acquires the tool remaining time acquisition means, and the tool remaining time acquisition means for the tool to be used in machining to be executed by the machine tool. Based on the obtained remaining time, a tool life judging means is provided for judging whether or not the tool reaches its life during machining, and the tool life judging means judges that the tool will reach the life during machining. If a tool replacement command means is provided for instructing the operator to replace the tool before the start of machining, the tool replacement command means outputs a replacement command and a certain period of time elapses. In time, when the tool change is not performed, to an external mobile terminal through a communication line, which is configured by providing an external reporting means for notifying, of the machine tool control apparatus. 3. A management required time acquisition means for acquiring a management required time required for machining to be executed by the machine tool from now on is provided, and for the inspection item to be inspected by the machine tool, the management remaining time up to a predetermined inspection time is set. Acquiring the management remaining time acquisition means, from the management required time acquired by the management required time acquisition means, and the management remaining time acquired by the management remaining time acquisition means, the inspection item during machining by the machine tool In the case where the management time arrival judging means for judging whether or not the predetermined inspection time is reached is provided, and the management time arrival judging means judges that the inspection item reaches the predetermined inspection time during machining. , A maintenance work command means for instructing a worker to perform a corresponding maintenance work before starting machining, and the maintenance work command means A machine tool configured to include an external reporting means for notifying an external mobile terminal via a communication line when the maintenance work is not completed when a certain time has elapsed after the tenancy command is output. Management device.