JP2004151843A - Machine tool operating condition management system and machine tool operating condition management method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a machine tool operating condition management system capable of automatically capturing an operating condition even when using a type of machine tool which is not designed under the consideration of the capture of the operating condition. <P>SOLUTION: This machine tool operating condition management system is provided with a control terminal 20 for outputting multiple kinds of instructions to make a machine tool perform its desired operation, a monitor unit 40 for outputting the operation information concerning the operating condition of the machine tool based on a comment sentence outputted from the control terminal and a control signal outputted by the machine tool according to a predetermined instruction inputted from the control terminal and a monitor terminal 50 for storing the operation information outputted from the monitor unit. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a machine tool operation status management system for managing the operation status of an NC (numerical control) machine tool, and to a machine tool operation status management method used in such a system.
[0002]
[Prior art]
Generally, in NC machine tools, it is demanded to automatically grasp the operation status for the purpose of checking the progress of the process. For example, Patent Document 1 below discloses an NC device capable of processing and recording operation information of a machine tool by a local NC device alone.
[0003]
However, there are many types of NC machine tools that are widely used at present and are not designed in consideration of automatically grasping the operation state. It is required to grasp.
[0004]
[Patent Document 1]
JP-A-10-143220 (page 1, FIG. 1)
[0005]
[Problems to be solved by the invention]
In view of the above points, the present invention provides a machine tool operation status management system that can automatically grasp the operation status even when using a type of machine tool that is not designed in consideration of the grasp of the operation status. And a machine tool operation status management method used in such a system.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, a machine tool operation status management system according to a first aspect of the present invention includes a control terminal that outputs a plurality of types of commands for causing a machine tool to perform a desired operation, and an output from the control terminal. A monitoring unit that outputs operation information relating to the operation status of the machine tool based on the comment sent and the control signal that the machine tool outputs according to a predetermined command input from the control terminal; and an operation information output from the monitoring unit. And a monitor terminal for storing the information.
[0007]
Also, a machine tool operation status management system according to a second aspect of the present invention includes a control terminal that outputs a plurality of types of commands for causing a machine tool to perform a desired operation, and a predetermined terminal input by the machine tool from the control terminal. And a monitoring terminal that receives the comment sentence output according to the instruction and outputs the content as operation information relating to the operation state of the machine tool, and a monitor terminal that saves the operation information output from the monitoring unit.
[0008]
A method for managing a machine tool operation status according to a first aspect of the present invention includes the steps of: outputting, in a control terminal, a plurality of types of commands for causing a machine tool to perform a desired operation; Outputting operation information relating to the operation status of the machine tool based on the comment text and the control signal output by the machine tool according to a predetermined command input from the control terminal; And storing the operation information to be performed.
[0009]
Further, in the machine tool operation status management method according to the second aspect of the present invention, the control terminal outputs a plurality of types of commands for causing the machine tool to perform a desired operation. Receiving a comment sentence output according to a predetermined command input from the control terminal, and outputting the content as operation information relating to the operation state of the machine tool; and, in the monitor terminal, the operation information output from the monitoring unit. Saving.
[0010]
According to the present invention, by providing a monitoring unit that outputs operation information of a machine tool based on a control signal or a comment sentence that the machine tool outputs in accordance with a predetermined command input from a control terminal, consideration of the operation status is taken into consideration. Even when a machine tool of a type not designed is used, the operating status can be automatically grasped.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the same components are denoted by the same reference numerals, and description thereof will be omitted.
FIG. 1 shows a configuration of a machine tool operation status management system according to a first embodiment of the present invention. As shown in FIG. 1, the machine tool operation status management system includes a control terminal 20 that outputs various commands for controlling the NC machine tool 10 as NC data, and an NC data output from the control terminal 20. A cutting monitor unit 40 that outputs operation information of the NC machine tool 10 based on the NC data input through the branch connector 30 and the air blow control signal input from the NC machine tool 10, And a monitor terminal 50 for storing the operation information output from the monitoring unit 40 and displaying the operation information of the NC machine tool 10. The same computer may be used as the control terminal 20 and the monitor terminal 50.
[0012]
The NC machine tool 10 and the control terminal 20 are connected via a branch connector 30 using a general connector such as RS232C and a cable. The control terminal 20 outputs a plurality of types of commands for causing the NC machine tool 10 to perform a desired operation as NC data according to the machining control program. The NC machine tool 10 inputs these commands and performs cutting and the like.
[0013]
The NC machine tool 10 has an air blow drive unit 11. When a command to perform an air blow operation is input from the control terminal 20, the NC machine tool 10 outputs an air blow control signal to the air blow drive unit 11 to perform the air blow operation. The NC machine tool 10 also has a detection unit 12 that detects an air blow control signal output to the air blow drive unit 11 and supplies the same signal to the cutting monitoring unit 40. The cutting monitoring unit 40 outputs operation information on the operation state of the NC machine tool 10 to the monitor terminal 50 based on the air blow control signal supplied by the detection unit 12.
[0014]
For example, the control terminal 20 outputs a command (M code) to turn on / off the air blow operation twice at the start of the machining of the NC machine tool 10 in accordance with the following machining control program.
%
M50 air blow ON
M09 Air blow OFF
M50 air blow ON
M09 Air blow OFF
Thus, the NC machine tool 10 repeats ON / OFF of the air blow control signal output to the air blow drive unit 11 twice in order to perform the air blow operation twice, so that two consecutive pulses are output. The cutting monitoring unit 40 counts two consecutive pulses, and outputs the count number to the monitoring terminal 50 as operation information.
[0015]
Further, the control terminal 20 outputs a command to turn on / off the air blow operation three times at the end of the machining of the NC machine tool 10. Thus, the NC machine tool 10 repeats ON / OFF of the air blow control signal output to the air blow drive unit 11 three times to perform the air blow operation three times, so that three consecutive pulses are output. The cutting monitoring unit 40 counts three consecutive pulses, and outputs the count to the monitoring terminal 50 as operation information.
[0016]
Similarly, the control terminal 20 issues a command to turn on / off the air blow operation a predetermined number of times (two or more times) when the NC machine tool 10 actually starts cutting or before an operation such as rapid traverse movement. )Output. The cutting monitoring unit 40 counts the number of consecutive pulses in the air blow control signal, and outputs the count to the monitoring terminal 50 as operation information. Further, the cutting monitoring unit 40 monitors the NC data received via the branch connector 30 and, when receiving the comment text, outputs the comment text to the monitoring terminal 50 as operation information.
[0017]
The monitoring terminal 50 adds the time information to the count number and the comment sentence output from the cutting monitoring unit 40 and saves them. The monitoring terminal 50 recognizes that one isolated pulse whose count number is 1 is an air blow control signal for simply performing an air blow operation, based on the count number output from the cutting monitoring unit 40, It is recognized that two or more consecutive pulses whose count number is two or more are air blow control signals indicating a specific operation of the NC machine tool 10. Further, the monitoring terminal 50 recognizes the time at which the specific operation was performed, based on the time at which the comment text was output from the control terminal 20.
[0018]
In this way, the monitor terminal 50 can grasp and display what the NC machine tool 10 has done and when. In addition, the monitor terminal 50 can calculate and display the processing time based on the processing start time and the processing end time of the NC machine tool 10, or calculate and display the required time for each process.
[0019]
In the present embodiment, the air blow control signal output to perform the air blow operation in the NC machine tool 10 is used to grasp the operation state of the NC machine tool 10, but the coolant operation and other operations are performed. A control signal output to perform the control may be used.
[0020]
Next, a machine tool operation status management system according to a second embodiment of the present invention will be described. This embodiment is applied to a case where the NC machine tool has a function called DPRNT that can output a comment sentence according to a command.
[0021]
FIG. 2 shows a configuration of a machine tool operation status management system according to a second embodiment of the present invention. As shown in FIG. 2, the machine tool operation status management system includes a control terminal 20 that outputs various commands for controlling the NC machine tool 60 as NC data, and an NC machine tool 60 A cutting monitoring unit 40 that receives a comment sentence output according to the input predetermined command and outputs the content as operating information relating to the operating status of the NC machine tool 60, and stores the operating information output from the cutting monitoring unit 40. And a monitor terminal 50 for displaying operation information of the NC machine tool 10.
[0022]
The NC machine tool 60 and the control terminal 20 are connected using a general connector and cable such as RS232C. The control terminal 20 outputs a plurality of types of commands for causing the NC machine tool 60 to perform a desired operation as NC data according to the machining control program.
[0023]
The control terminal 20 uses the DPRNT function of the NC machine tool 60 to start the NC machine tool 60, at the end of machining, at the time of actually starting cutting, and before performing operations such as rapid traverse movement. A DPRNT sentence (up to 256 characters) that causes the device 60 to output a predetermined comment sentence is output as part of the NC data.
[0024]
For example, the control terminal 20 outputs a DPRNT sentence that causes the NC machine tool 60 to output “KAKOKAISI” as a comment at the start of machining of the NC machine tool 60 according to the following machining control program.
%
POPEN
DPRNT (F00 / KAKOKAISI)
PCLOS
As a result, the NC machine tool 60 outputs “KAKOKAISI” as a comment sentence. The cutting monitoring unit 40 receives the comment sentence, and outputs the content of the comment to the monitor terminal 50 as operation information.
[0025]
The monitoring terminal 50 adds the time information to the comment text output from the cutting monitoring unit 40 and saves the comment text. Since the comment text includes operation information such as “processing start”, the monitor terminal 50 can grasp and display what the NC machine tool 60 did and when. Further, the monitor terminal 50 can calculate and display the processing time based on the processing start time and the processing end time of the NC machine tool 60, and can obtain the required time for each process.
[0026]
FIG. 3 shows a configuration of a machine tool operation status management system for managing the operation status of a plurality of NC machine tools. As shown in FIG. 3, the machine tool operation status management system includes a control terminal 20 that outputs various commands for controlling a plurality of NC machine tools 60 as NC data, and a plurality of NC machine tools 60, respectively. It includes a plurality of connected cutting monitoring units 40 and a monitoring terminal 50 that stores operating information output from the plurality of cutting monitoring units 40 and displays operating information of the plurality of NC machine tools 10. Are connected via a bus line.
[0027]
The control terminal 20 can cause the designated NC machine tool 60 to perform a desired operation by outputting NC data including an address designating the NC machine tool 60. In addition, the plurality of cutting monitoring units 40 output operation information including an address corresponding to the address of the connected NC machine tool 60, so that which NC machine tool 60 performed what and when in the monitor terminal 50. Can be grasped and displayed.
[0028]
FIG. 4 shows a configuration of a machine tool operation status management system including a schedule terminal. This machine tool operation status management system is obtained by adding a schedule terminal 80 and a schedule information DB (database) 90 to the machine tool operation status management system shown in FIG. The operation information accumulated in the monitor terminal 50 is added to the processing information DB 70 storing the NC data of a plurality of processes, and the processing information DB 70 is stored in the control terminal 20 and the schedule terminal 80. It is available.
[0029]
Here, the schedule terminal 80 creates a schedule of a plurality of processes based on the NC data and the operation information of the plurality of processes performed using the NC machine tool 60, and stores schedule information indicating the schedule in the schedule information DB 90. To be stored. The control terminal 20 advances a plurality of processes performed using the NC machine tool 60 according to the schedule information stored in the schedule information DB 90. This makes it possible to calculate the cost based on the number of man-hours and the required time for each process, and to calculate the remaining time by grasping how far the process has progressed, even when performing machining with many man-hours.
[0030]
In the above, two modifications of the machine tool operation status management system according to the second embodiment of the present invention have been described with reference to FIGS. 3 and 4. However, these modifications are the same as those of the first embodiment of the present invention. The present invention can also be realized in the machine tool operation status management system according to the embodiment.
[0031]
【The invention's effect】
As is clear from the above description, according to the present invention, even when an NC machine tool of a type not designed in consideration of the grasp of the operation status is used, the operation status can be automatically grasped.
[Brief description of the drawings]
FIG. 1 is a diagram showing a configuration of a machine tool operation status management system according to a first embodiment of the present invention.
FIG. 2 is a diagram illustrating a configuration of a machine tool operation status management system according to a second embodiment of the present invention.
FIG. 3 is a diagram showing a first modification of the machine tool operation status management system according to the second embodiment of the present invention.
FIG. 4 is a diagram showing a second modification of the machine tool operation status management system according to the second embodiment of the present invention.
[Explanation of symbols]
10, 60 NC machine tool 20 Control terminal 30 Branch connector 40 Cutting monitoring unit 50 Monitoring terminal 70 Processing information DB
80 schedule terminal 90 schedule information DB

Claims (7)

A control terminal that outputs a plurality of types of commands for causing the machine tool to perform a desired operation;
A monitoring unit that outputs operation information on the operation state of the machine tool based on a comment sentence output from the control terminal and a control signal output by the machine tool according to a predetermined command input from the control terminal. ,
A monitor terminal for storing operation information output from the monitoring unit,
A machine tool operation status management system comprising: The control terminal outputs a command to perform an air blow operation or a coolant operation N times at the start of machining of the machine tool, and outputs a command to perform an air blow operation or a coolant operation M times at the end of machining of the machine tool. Output (N and M are different integers of 2 or more),
The machine tool operation status management system according to claim 1, wherein the monitoring unit outputs operation information based on the number of consecutive pulses in a control signal output for the machine tool to perform an air blow operation or a coolant operation. A control terminal that outputs a plurality of types of commands for causing the machine tool to perform a desired operation;
A monitoring unit that receives a comment sentence output by the machine tool according to a predetermined command input from the control terminal, and outputs the content thereof as operation information on the operation state of the machine tool,
A monitor terminal for storing operation information output from the monitoring unit,
A machine tool operation status management system comprising: The machine tool operation status management system according to claim 1, wherein the monitor terminal displays at least one of a machining start time, a machining end time, and a machining time of the machine tool. The processing terminal according to claim 1, further comprising: a schedule terminal that creates a schedule of the plurality of processes based on processing data of the plurality of processes performed using the machine tool and operation information accumulated in the monitor terminal. 5. The machine tool operation status management system according to any one of 4. In the control terminal, outputting a plurality of types of commands for causing the machine tool to perform a desired operation;
In the monitoring unit, based on a comment sentence output from the control terminal and a control signal output by the machine tool in accordance with a predetermined command input from the control terminal, output operation information on an operation state of the machine tool. Steps to
In a monitor terminal, storing operation information output from the monitoring unit,
A machine tool operation status management method comprising: In the control terminal, outputting a plurality of types of commands for causing the machine tool to perform a desired operation;
In the monitoring unit, a step in which the machine tool receives a comment sentence output according to a predetermined command input from the control terminal, and outputs the content as operation information relating to an operation state of the machine tool,
In a monitor terminal, storing operation information output from the monitoring unit,
A machine tool operation status management method comprising:

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