JPH05143130A - Numerical controller - Google Patents

Abstract

PURPOSE:To previously prevent the generation of malfunction even when a working program using a variable is formed in error and to easily search a position generating a program miss. CONSTITUTION:This numerical controller is provided with a variable allowing information storing part 16 for storing reading/writing allowing information for respective variables, and a variable allowance deciding part 17 for reading out allowing information corresponding to a variable specified from a working program in a required working system from the storing part at the time of specifying the variable and then judging whether reading/writing from/in the required working system is allowed or not. When the variable is specified from the working program in the required working system, the allowing information corresponding to the specified variable is read out of the storing part 16 and whether reading/writing from/ in the required working system is allowed or not is decided by the judging part 17. At the time of deciding that the reading/ writing is not allowed, an alarm is generated by a variable processing means and the execution of the working program is stopped.

Description

Detailed Description of the Invention

[0001]

[Industrial application] Numerical control capable of controlling machine tools consisting of multiple machining systems based on information from multiple machining programs, and capable of processing variables that can be read and written from the machining programs of all machining systems Regarding the device.

[0002]

2. Description of the Related Art Recently, machine tools have a plurality of turrets,
Further, there are a great many that are configured to efficiently process multiple processes by having a plurality of spindles. Here, the numerical control device for controlling a plurality of machining systems refers to each combination of these plurality of tool rests, a plurality of control axes, and one or more spindles as an independent system, and each system has It refers to one that can be controlled independently based on the corresponding machining program. FIG. 5 is a diagram showing an example of a two-system machine tool as a typical example showing the configuration of a numerically controlled machine tool having a plurality of machining systems. In FIG. 5, a workpiece (W) is grasped and rotated. A machining system constituted by a spindle (S) and a first tool rest (T1) whose movement is controlled in the X1 axis direction and the Z1 axis direction is referred to as a first system, and the spindle (S) and X2
The second turret (T
2) The processing system composed of and is the second system 2
It consists of a system. FIG. 4 shows the configuration of a conventional numerical control device capable of controlling the numerically controlled machine tool having the two systems shown in FIG. 5 and processing variables that can be read and written from the machining programs of all the systems. It is a block diagram, and the numerical control device has a processing program storage unit 1 that stores a processing program input to the numerical control device using a paper tape, a floppy disk, or the like as a medium. 1-system control unit 21
The first system program storage unit 2 for reading and storing the machining program of No. 2 is connected to the second system program storage unit 8 for reading and storing the machining program of the second system control unit 22. Then, the first system program storage unit 2
Is configured to sequentially analyze the machining program contents from the first system program storage unit 2 to generate a command value, and when the machining program includes a command using a variable common to all systems, the variable command VM1 is set to the first command. A first system program interpreting unit 3 for sending to the system variable processing unit 7 is connected, and the first system program interpreting unit 3 calculates a feed axis movement amount based on a command value generated by the first system program interpreting unit 3. A first system for sending a read / write request VRW1 of a variable number corresponding to the command from the first system function generating unit 4 for calculating and the variable command VM1 output from the first system program interpreting unit 3 to the common variable storage unit 14. The variable processing unit 7 is connected. Further, the first system function generator 4 is connected to a first system axis controller 5 that drives the control shaft motor 6 by the feed shaft movement amount calculated by the first system function generator 4 to control the position. There is. In addition, the first system variable processing unit 7 uses the variable command V
Based on M1, not only simple variable reading / writing, but also data transfer between variables, arithmetic processing, and designated variable processing are performed, and then the data is substituted as a command value. A predetermined process for variables such as sending to 3 is performed. Then, the variable data is read out to the common variable storage unit 14 /
The operation unit 15 for writing is connected. Also, the second
The system program storage unit 8 sequentially analyzes the machining program contents from the second system program storage unit 8 to generate a command value, and when there is a command using a variable common to all the systems in the machining program, the variables are changed. A second system program interpreting section 9 for sending the command VM2 to the second system variable processing section 13 is connected, and the second system program interpreting section 9 is based on the command value generated by the second system program interpreting section 9. Variable system VM output from the second system function generation unit 10 for calculating the feed axis movement amount and the second system program interpretation unit 9
The second system variable processing unit 13 that sends the read / write request VRW2 of the variable number corresponding to the command from the second to the common variable storage unit 14 is connected. Further, the second system function generator 10 is connected to a second system axis controller 11 that drives the control shaft motor 12 by the feed shaft movement amount calculated by the second system function generator 10 to control the position. There is. In addition, the second system variable processing unit 13 commands not only simple variable reading / writing, but also data transfer between variables, arithmetic processing, and designated variable processing based on the variable command VM2, and then commands the data. VD2 substituted as a value
Is sent to the second system program interpreting unit 9 and a predetermined process relating to variables is performed. Next, the operation will be described. The first program storage unit 2 reads out and stores the machining program of the system 1 from the machining program storage unit 1 that stores the machining program input to the numerical control device using a paper tape, a floppy disk, or the like as a medium.
Then, the first system program interpreting unit 3 sequentially analyzes the machining program contents from the first system program storing unit 2,
A command value is generated and sent to the first system function generator 4. Further, the first system function generating unit 4 calculates the feed axis movement amount based on the command value and sends it to the first system axis control unit 5, and the first system axis control unit 5 uses the feed axis movement amount to generate the control axis motor 6 To control the position. Further, when the first system program interpreting section 3 gives a command using a variable common to all systems in the machining program, the first system program interpreting section 3 sends the variable command VM1 to the first system variable processing section 7. Send out,
The first system variable processing unit 7 sends a read / write request VRW1 of the variable number corresponding to the command from the variable command VM1 to the common variable storage unit 14. In the case of a read request, the corresponding variable data VRD1 is read from the common variable storage unit 14, and in the case of a write request, the corresponding variable data VW1.
D1 is written in the common variable storage unit 14. The second system control unit 22 also performs the same operation as the above-described first system control unit 21. Although the numerical control device described above has two systems, it may have three or more systems. In this case, the same configuration as that of the first system control unit 21 is applied to control N systems of three or more systems by the number of systems.
Each unit of the N-th system control unit is configured to have the same unit, and the processing operation of each unit of the N-th system control unit is performed in the same manner as the first system control unit 21 described above.

[0003]

In the above-mentioned conventional numerical control apparatus, the processing is unconditionally permitted for the read / write request of the machining program of each system with respect to the variable common to all machining systems. From what I am doing
When a programmer creates a machining program that uses variables, if the data for a particular variable is written by a particular machining system and the other system only reads it, another machining system mistakenly writes data to the variable. However, there is a problem that even if a program error that destroys the data written by a specific processing system is performed, the program is executed as it is and an erroneous operation occurs.
Further, when such a program error occurs, the pro-clammer cannot easily find the wrong program part. For example, as shown in the example of a machining program using variables common to the machining system in FIG. 6, V is used in the variable designation block a of the first system machining program.
Write "1" in C1, read the contents of VC1 written in the first system machining program in the variable designation block b of the second system machining program, and judge whether it is "0",
If it is "0", it jumps to the sequence NΔΔΔ. Since "1" is written in VC1 in this example, it does not jump to the sequence NΔΔΔ but the next sequence of the variable designation block b. Will be executed in.
However, the variable designation block a of the first system machining program
After that, when a command to write "0" to VC1 is issued by mistake like the variable designation block c of the second system machining program before the variable designation block b of the second system machining program, the variable designation block b This causes a jump to the sequence NΔΔΔ, causing an operation different from the above-described predetermined operation. Incidentally, the p code of d in the figure is a code for designating the waiting for synchronization between the systems, and here, the result written in VC1 by the first system machining program is referred to by the second system machining program. The present invention has been made to solve the above problems, and an object of the present invention is to prevent malfunction even when a machining program using a variable is mistakenly created and to prevent a program error. An object of the present invention is to provide a numerical control device that can easily find a raised position.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and a numerical control device according to the present invention is a variable process for processing variables that can be read and written from a machining program of a plurality of machining systems. Means, variable storage means for storing these variables, variable permission information storage means for storing read and write permission information for each variable stored in the variable storage means, and a machining program of a desired machining system When a variable is designated, variable permission determination means that reads permission information corresponding to the designated variable from the variable permission information storage means and determines whether to permit reading and writing to a desired processing system And when the variable permission determination means determines that reading and writing are not permitted for the desired machining system, the variable processing hand Is characterized in that to stop the execution of the machining program caused the alarm.
Further, it is characterized in that a setting means for setting the read and write permission information for each variable stored in the variable permission information storage means for each machining system is provided.

[0005]

Based on the above configuration, the numerical controller of the present invention is
Variables that can be read and written from the machining programs of a plurality of machining systems are stored by the variable storage means, and read and write permission information for each variable stored in the variable storage means is stored by the variable permission information storage means. When a variable is designated by a machining program of a desired machining system, permission information corresponding to the designated variable is read from the variable permission information storage means, and whether reading and writing are permitted for the desired machining system. If the variable permission determining means determines that reading and writing are not permitted for the desired machining system, the variable processing means generates an alarm and stops the execution of the machining program. .. When a machining program that uses prohibited variables is mistakenly created, a malfunction is prevented in advance, and a location where a program error has occurred can be easily found.

[0006]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a configuration of a numerical controller according to the present embodiment, which is capable of controlling a machine tool having a plurality of systems and performing a read / write enable / disable determination process for a variable common to all the systems. It is a block diagram, and the same components as those in FIG. This numerical control device has a variable permission information storage unit 16 for storing variable permission information in which reading and writing permission is set for variables common to all systems in advance by an operating unit 15 as setting means. Variable permission information storage unit 16
Is the variable request V output from the first system variable processing unit 7.
Upon receiving RQ1, it reads out the variable permission information VPD corresponding to the specified variable number from the variable permission information storage unit 16 and determines whether or not to permit reading and writing to a desired machining system as a variable permission determining means. The common variable permission determination unit 17 is connected, and the common variable permission determination unit 17 is connected to the first system variable processing unit 7 and the second system variable processing unit 13. Although only the first system control unit 21 and the second system control unit 22 are shown in FIG. 1, the processing operation of each unit of the N-system control unit N-system control unit is similar to that of the first system control unit. Is becoming FIG. 3 is a data example of the variable permission information stored in the variable permission information storage unit 16. For example, in four systems, variables common to all systems are n.
In the case where there is one, there is variable permission information corresponding to each variable, and each variable permission information is roughly divided into read permission information and write permission information, and each system is assigned to the corresponding bit. When the bit is "1", the system is permitted, and when the bit is "0", the system is prohibited. Therefore, in the example of (a) in the figure, the variable VC1 is given write permission to the lines 1 and 2, and read permission is given to the lines 1 and 2 and the lines 3 and 4, and all four lines are set. It can be read, but only system 1 and system 2 can be written. In this way, one or more specific systems can be designated from the operation unit 15 as the read / write permission information for each variable. Next, the operation of this embodiment will be described with reference to the flowchart of FIG. The first program storage unit 2 reads out and stores the machining program of the system 1 from the machining program storage unit 1 that stores the machining program input to the numerical control device using a paper tape, a floppy disk, or the like as a medium. Then, the first system program interpreting unit 3
Sequentially analyzes the contents of the machining program from the first system program storage unit 2, generates a command value, and sends it to the first system function generation unit 4. Further, the first system function generating unit 4 calculates the feed axis movement amount based on the command value and sends it to the first system axis control unit 5, and the first system axis control unit 5 uses the feed axis movement amount to generate the control axis motor 6 To control the position. Further, when the first program interpreting unit 3 issues a command using a variable common to all systems in the machining program, the first system program interpreting unit 3 sends a variable command VM1 to the first system variable processing unit 7. .. At this time, the first system variable processing unit 7 confirms the presence / absence of the variable command VM1 using variables common to all systems (step S1), and ends the process if there is no variable command VM1. If there is a variable command VM1, a variable request VRQ1 indicating a variable number read / write request corresponding to the system command is generated and sent to the common variable permission determination unit 17 (step S2). Then, the common variable permission determination unit 17 that has received the variable request VRQ1 reads variable permission information VPD such as the data example of the variable permission information for the designated variable number shown in FIG. 3 from the variable permission information storage unit 16 (step S3), it is determined whether the variable request is a read request (step S4). Then, when the variable request is a read request, the read permission information is extracted from the variable permission information VPD, collated with the read permission information corresponding to the commanded system number (step S5), and read permission / inhibition is determined (step S5). S7). Further, when it is determined that the reading is possible, the reading permission flag is turned on (step S
9) Go to step 11. On the other hand, if it is not a read request, that is, if it is a write request, the write permission information is extracted from the variable permission information VPD and collated with the write information corresponding to the commanded system number (step S6) to determine whether writing is possible (step S6). Step S8). When it is determined that the writing is possible, the writing permission flag is turned on (step S10), and the process proceeds to step S11 as in the case of the read request. In step S11, read / write permission RWP1 based on the read permission flag and write permission flag set in steps S9 and S10.
Is generated and sent to the first system variable processing section 7 (step S
12). Then, when the first system variable processing unit 7 receives the read / write permission RWP1, the variable command VM1
A predetermined process for is performed (step S12). Also,
When it is determined that the reading is impossible in step S7, or when it is determined that the writing is not possible in step S8, an alarm process is performed to generate an alarm and stop the execution of the machining program (step S12).

The processing operation of each part of the N-th system control unit after the second system control unit 22 is also the above-mentioned first system control unit 21.
The same operation is performed.

[0008]

As described above, according to the numerical controller of the present invention, read and write permission information is stored for each variable common to all systems, and when a variable is designated, Since it is configured to be able to determine whether to read or write based on the permission information, it is possible to avoid a malfunction caused by mistakenly writing to a variable that can only be written to a specific system from another system due to a program error. It is possible to prevent erroneous processing and machine damage. Further, the read / write permission information for each variable stored in the variable permission information storage means is provided with a setting means for setting each machining system, and when there is a shortage of variables dedicated to each system, a variable common to all systems is set. Since the predetermined read and write permission information is set by the setting means, there is an effect that variables common to all systems can be temporarily assigned to variables dedicated to each system.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a numerical control device according to the present invention.

FIG. 2 is a flowchart showing the operation of the present invention.

FIG. 3 is a data configuration diagram showing a data example of variable permission information.

FIG. 4 is a block diagram showing a configuration of a conventional numerical control device.

FIG. 5 is a diagram showing an example of a numerically controlled machine tool configuration having a plurality of systems.

FIG. 6 is a diagram showing an example of a machining program using variables common to all systems.

[Explanation of symbols]

 1 Machining Program Storage Section 2 1st System Program Storage Section 3 1st System Program Interpretation Section 4 1st System Function Generation Section 5 1st System Axis Control Section 6 Control Axis Motor 7 1st System Variable Processing Section 8 2nd System Program Storage Part 9 Second system program interpreting part 10 Second system function generating part 11 Second system axis control part 12 Control axis motor 13 Second system variable processing part 14 Common variable storage part 15 Operation part 16 Variable permission information storage part 17 Common variable Permission judgment part

[Procedure amendment]

[Submission date] April 22, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0003

[Correction method] Change

[Correction content]

[0003]

In the above-mentioned conventional numerical control apparatus, the processing is unconditionally permitted for the read / write request of the machining program of each system with respect to the variable common to all machining systems. From what I am doing
When a programmer creates a machining program that uses variables, if the data for a particular variable is written by a particular machining system and the other system only reads it, another machining system mistakenly writes data to the variable. However, there is a problem that even if a program error that destroys the data written by a specific processing system is performed, the program is executed as it is and an erroneous operation occurs.
Further, when such a program error occurs, the pro-clammer cannot easily find the wrong program part. For example, as shown in the example of a machining program using variables common to the machining system in FIG. 6, V is used in the variable designation block a of the first system machining program.
Write "1" in C1, read the contents of VC1 written in the first system machining program in the variable designation block b of the second system machining program, and judge whether it is "0",
If it is "0", it jumps to the sequence NΔΔΔ. Since "1" is written in VC1 in this example, it does not jump to the sequence NΔΔΔ but the next sequence of the variable designation block b. things will continue to run the.
However, the variable designation block a of the first system machining program
After that, when a command to write "0" to VC1 is issued by mistake like the variable designation block c of the second system machining program before the variable designation block b of the second system machining program, the variable designation block b This causes a jump to the sequence NΔΔΔ, causing an operation different from the above-described predetermined operation. Incidentally, the p code of d in the figure is a code for designating the waiting for synchronization between the systems, and here, the result written in VC1 by the first system machining program is referred to by the second system machining program. The present invention has been made to solve the above problems, and an object of the present invention is to prevent malfunction even when a machining program using a variable is mistakenly created and to prevent a program error. An object of the present invention is to provide a numerical control device that can easily find a raised position.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction content]

[0006]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a configuration of a numerical controller according to the present embodiment, which is capable of controlling a machine tool having a plurality of systems and performing a read / write enable / disable determination process for a variable common to all the systems. It is a block diagram, and the same components as those in FIG. This numerical control device has a variable permission information storage unit 16 for storing variable permission information in which reading and writing permission is set for variables common to all systems in advance by an operating unit 15 as setting means. Variable permission information storage unit 16
Is the variable request V output from the first system variable processing unit 7.
Upon receiving RQ1, it reads out the variable permission information VPD corresponding to the specified variable number from the variable permission information storage unit 16 and determines whether or not to permit reading and writing to a desired machining system as a variable permission determining means. The common variable permission determination unit 17 is connected, and the common variable permission determination unit 17 is connected to the first system variable processing unit 7 and the second system variable processing unit 13. Although only the first system control unit 21 and the second system control unit 22 are shown in FIG. 1, the processing operation of each unit of the N-system control unit N-system control unit is similar to that of the first system control unit. Is becoming FIG. 3 is a data example of the variable permission information stored in the variable permission information storage unit 16. For example, in four systems, variables common to all systems are n.
In the case where there is one, there is variable permission information corresponding to each variable, and each variable permission information is roughly divided into read permission information and write permission information, and each system is assigned to the corresponding bit. When the bit is "1", the system is permitted, and when the bit is "0", the system is prohibited. Therefore, in the example of (a) in the figure, the variable VC1 is given write permission to the lines 1 and 2, and read permission is given to the lines 1 and 2 and the lines 3 and 4, and all four lines are set. It can be read, but only system 1 and system 2 can be written. In this way, one or more specific systems can be designated from the operation unit 15 as the read / write permission information for each variable. Next, the operation of this embodiment will be described with reference to the flowchart of FIG. The first program storage unit 2 reads out and stores the machining program of the system 1 from the machining program storage unit 1 that stores the machining program input to the numerical control device using a paper tape, a floppy disk, or the like as a medium. Then, the first system program interpreting unit 3
Sequentially analyzes the contents of the machining program from the first system program storage unit 2, generates a command value, and sends it to the first system function generation unit 4. Further, the first system function generating unit 4 calculates the feed axis movement amount based on the command value and sends it to the first system axis control unit 5, and the first system axis control unit 5 uses the feed axis movement amount to generate the control axis motor 6 To control the position. Further, when the first program interpreting unit 3 issues a command using a variable common to all systems in the machining program, the first system program interpreting unit 3 sends a variable command VM1 to the first system variable processing unit 7. .. At this time, the first system variable processing unit 7 confirms the presence / absence of the variable command VM1 using variables common to all systems (step S1), and ends the process if there is no variable command VM1. If there is a variable command VM1, the system number and
A variable request VRQ1 indicating a read / write request of a variable number corresponding to the variable command is generated and sent to the common variable permission determination unit 17 (step S2). And the variable request V
Upon receiving RQ1, the common variable permission determination unit 17 stores the variable permission information VPD such as the data example of the variable permission information for the designated variable number shown in FIG.
6 is read (step S3), and it is determined whether the variable request is a read request (step S4). Then, when the variable request is a read request, the read permission information is extracted from the variable permission information VPD, collated with the read permission information corresponding to the commanded system number (step S5), and read permission / inhibition is determined (step S5). S7). Further, when it is determined that the reading is possible, the reading permission flag is turned on (step S9), and the process proceeds to step 11. On the other hand, if the request is not a read request, that is, a write request, the write permission information is extracted from the variable permission information VPD and collated with the write information corresponding to the commanded system number (step S
6), it is determined whether writing is possible (step S8). When it is determined that the writing is possible, the writing permission flag is turned on (step S10), and the process proceeds to step S11 as in the case of the read request. In step S11, the read / write permission RWP1 is generated based on the read permission flag and the write permission flag set in steps S9 and S10, and is sent to the first system variable processing unit 7 (step S12). Then, the first systematic variable processing unit 7
When the read / write permission RWP1 is received, the predetermined process for the variable command VM1 is performed (step S1).
2). When it is determined that the reading is impossible in step S7 or when the writing is not possible in step S8, an alarm process is performed to stop the execution of the machining program (step S1).
2).

Claims (2)

[Claims] 1. A numerical controller for controlling a plurality of machining systems, comprising variable processing means for processing variables that can be read and written from machining programs of a plurality of machining systems, and variable storage means for storing these variables. In the variable storage means, a variable permission information storage means for storing read and write permission information for each variable stored in the variable storage means, and a variable designated when a variable is designated from a machining program of a desired machining system. Permission information corresponding to a variable is read from the variable permission information storage means, and variable permission determination means for determining whether or not to permit reading and writing for a desired processing system is provided. When it is determined that reading and writing are not permitted for the processing system, the variable processing means generates an alarm and performs processing. A numerical controller characterized by stopping the execution of a program. 2. The numerical control apparatus according to claim 1, further comprising setting means for setting read and write permission information for each variable stored in the variable permission information storage means for each machining system.