JPH06314109A - Numerical control device - Google Patents

Abstract

(57) [Summary] [Purpose] To facilitate the creation of machining programs. Allows the priority order of machining programs to be changed. [Configuration] When the same axis is designated by a machining program of a plurality of systems, the CPU 1 stores a priority storage area 2 for each system.
4, the machining priority order registered for each system is read in advance, and the axis control is performed from the system having the highest priority order to cut the workpiece. The other system starts cutting after the system having the higher priority has finished cutting. [Effect] It is not necessary to create a machining program with care such as not specifying the same axis. If you change the registration order,
You can easily change the priority.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a numerical controller, and more particularly to a combination of a plurality of axes (control axes or spindles) as independent systems, and a plurality of machining programs corresponding to each system are simultaneously multiplexed. The present invention relates to a numerical control device for processing.

[0002]

2. Description of the Related Art FIG. 11 is a hardware configuration diagram of a conventional numerical control apparatus disclosed in Japanese Patent Laid-Open No. 3-36606. The numerical controller 501 includes a CPU 51, a memory 52, a keyboard 53, and an interface circuit 5.
4, the drive unit 55, and the data I / O 61 are connected via the bus B. The drive unit 55 is configured by the interface 56, the servo control circuit 57, the servo amplifier 58, the motor 59, and the detector 60 as one set.

The CPU 51 controls the operation of each part. The memory 52 stores various programs and the like. The keyboard 53 receives instructions and data from a machine operator. The interface circuit 54 receives a contact signal from an external switch, and via the bus B, the CPU 51
To transmit. It also outputs contact signals to lamps, solenoid valves, etc. The drive unit 55 functions as a drive unit for one axis (including the main shaft) in one set. The interface 56 transmits the position command data given from the CPU 51 to the servo control circuit 57. Further, position detection data is fetched from the detector 60. The servo control circuit 57 outputs a control voltage corresponding to the deviation between the position command data and the position detection data from the detector 60. The servo amplifier 58 drives the motor 59 based on the control voltage supplied from the servo control circuit 57 to follow the command position. The data I / O 61 exchanges data with the outside.

FIG. 12 is an extracted view of the CPU 51 and the memory 52 in the numerical controller 501. Memory 5
2 is a system-based machining program storage area 520, a control program area 521, a system-based / axis name port address storage area 523, and a port-specific command value storage area 52.
It consists of 7. The system-based machining program storage area 520 stores machining programs from the first system machining program to the nth system machining program. The control program area 521 stores a control program for controlling the operation of each part and changing the designated axis. The axis name and port address are stored in the system-based / axis name / port address storage area 523 according to the operating status of each machining program. The port address corresponding to the axis name is previously input using the keyboard 53. In the port-specific command value storage area 527, a command value according to the operating status of the system-specific machining program is written in the port address corresponding to the designated axis.

Next, the operation of the numerical controller 501 will be described. The CPU 51 executes the control program 521 to obtain a command value from each machining program. In addition, the axis name and port address according to the operating status are read from the system-based / axis name / port address storage area 523. Then, each command value is written to the corresponding port address of the command value storage area 527 for each port. The drive unit 55 controls the corresponding axis according to the command value written in the corresponding port address of the port-specific command value storage area 527. C
When the PU 51 reads an axis designation command (command that designates a combination of system and axis) from each machining program,
According to the axis designation command, the axis name in the system-specific / axis-name port address storage area 523 is rewritten. In this way, processing corresponding to a plurality of systems is simultaneously performed in a multiplex manner.

As a prior art related to this type of numerical control device, Japanese Patent Laid-Open No. 1-295741 discloses a command for setting a standby or standby release timing of a machining program of another system in the machining program. A control device for a compound machine tool which is written and synchronized between systems is disclosed.

[0007] As another conventional technique, Japanese Patent Laid-Open No. 64-64-
In Japanese Patent No. 87102, when there is a risk that the first machining head and the second machining head interfere with each other, the first machining head or the second machining head is processed based on machining parameters (machining start order, finishing degree, machining contents, etc.). A controller for a two-spindle lathe that determines the priority of machining by a head is disclosed.

[0008]

In the above-mentioned conventional numerical control device 501, when machining programs of a plurality of systems specify the same axis, which machining program controls the axis cannot be determined. Therefore, the programmer creates the machining program so that the machining programs of a plurality of systems do not specify the same axis, or the above-mentioned JP-A-1-
As in the method disclosed in Japanese Patent No. 295741, it is necessary to write a command for setting the timing in the machining program, which causes a problem that the work load on the programmer becomes heavy. On the other hand, when the method disclosed in Japanese Patent Laid-Open No. 64-87102 is used, the processing priority is determined based on the processing parameters, so the work load on the programmer does not become heavy, but the processing order is flexible. There is a problem that lacks sex. For example, even if it is desired to perform machining by another system while maintaining the system in which the trouble has occurred, there is a problem that the machining order cannot be changed because the priority order is determined based on the machining parameters.

Further, in the above-described conventional numerical control device 501, it is impossible to determine when the machining programs of a plurality of systems use the same work space and which machining program uses the work space. Therefore, the programmer
The machining programs are created so that the machining programs of a plurality of systems do not use the same work space, or timings are generated in the machining programs as in the method disclosed in JP-A-1-295741. Since it is necessary to write a command for setting, there is a problem that the work load on the programmer becomes heavy. Alternatively, there is a problem that the size of the workpiece of each system must be reduced or the entire processing space must be increased so that the machining programs of a plurality of systems do not use the same work space. On the other hand, when the method disclosed in Japanese Patent Laid-Open No. 64-87102 is used, the processing priority is determined based on the processing parameters. There is a problem of lack of flexibility. For example, even if it is desired to perform machining by another system while maintaining the system in which the trouble has occurred, there is a problem that the machining order cannot be changed because the priority order is determined based on the machining parameters.

The present invention has been made in order to solve the above problems, and a first object of the present invention is to obtain a numerical controller in which a programmer can easily create a machining program and can easily change the machining sequence. The purpose of. In addition, a numerical control device that enables a programmer to easily create a machining program, has no restriction that the size of the workpiece of each system needs to be reduced or the entire machining space to be increased, and can easily change the machining sequence is provided. The second purpose is to obtain.

[0011]

In the numerical controller of the first configuration of the present invention, a combination of a plurality of axes (control axis or spindle) is set as an independent system, respectively, and a plurality of machining programs corresponding to each system are provided. In a numerical controller that simultaneously processes multiple operations, the same axis designation determining means for determining whether or not the same axis is designated from a machining program for a plurality of systems, and a system registered in advance when it is determined that the same axis is designated. The system selecting means for selecting the machining priority for each of the systems in order from the system having the highest read priority, and the control of the axis by only the system selected by the system selecting means and the control of the axis by other systems. It is provided with a system control means for prohibiting.

A second aspect of the numerical controller according to the present invention is
In a numerical controller that combines multiple axes (control axes or spindles) into independent systems and simultaneously processes multiple machining programs corresponding to each system simultaneously, tools of multiple systems share the same work space. The same work space use determining means for determining whether or not to perform machining using the same work space, and when it is determined that the same work space is used, the machining priority for each system registered in advance is read out from the system having a high priority. The system includes a system selecting unit that selects in order, and a system controlling unit that permits only the system selected by the system selecting unit to use the working space and prohibits the use of the working space by other systems. .

[0013]

In the numerical controller having the first configuration, when the same axis is designated by the machining programs of a plurality of systems,
Axis control is allowed in order from the system with the highest priority in advance, so there is no need to create a machining program so that the same axis is not specified, or to create a machining program in consideration of synchronization between systems. Can be created easily. Further, the priority order can be easily changed regardless of the processing parameter.

In the numerical controller of the second construction, when tools use the same work space in a plurality of systems, the use of the designated work space is permitted in order from the system having the highest processing priority. It is not necessary to create a machining program so as not to use space, or to create a machining program in consideration of synchronization between systems, and a machining program can be easily created. In addition, it is not necessary to reduce the size of the workpiece of each system or increase the size of the entire processing space. Further, the priority order can be easily changed regardless of the processing parameter.

[0015]

【Example】

First Embodiment FIG. 1 is a hardware configuration diagram of a numerical controller according to a first embodiment of the present invention. This numerical controller 101 is a CPU
1, a memory 2, a keyboard 3, an interface circuit 4, a drive unit 5, and a data I / O 11 are connected via a bus B. The drive unit 5 includes an interface 6, a servo control circuit 7, and a servo amplifier 8
, The motor 9 and the detector 10 form one set.

The CPU 1 controls the operation of each part. The memory 2 stores various programs and the like. The keyboard 3 receives instructions and data from a machine operator. The interface circuit 4 receives a contact signal from an external switch and transmits it to the CPU 1 via the bus B. It also outputs contact signals to lamps, solenoid valves, etc. The drive unit 5 functions as a drive unit for one axis (including the main shaft) in one set. Interface 6 is C
The position command data given from PU1 is transmitted to the servo control circuit 7. Further, the position detection data is fetched from the detector 10. The servo control circuit 7 outputs a control voltage corresponding to the deviation between the position command data and the position detection data from the detector 10. The servo amplifier 8 drives the motor 9 based on the control voltage given from the servo control circuit 7 to follow the command position. Data I
/ O11 exchanges data with the outside.

FIG. 2 is an extraction diagram of the CPU 1 and the memory 2 in the numerical control device 101. The memory 2 includes a system-based machining program storage area 20, a control program area 21, and a system-based / axis name / port address storage area 2
3, a system-based priority storage area 24, and a port-based command value storage area 27.

In the system-specific machining program storage area 20,
The first system machining program to the nth system machining program are stored. In the control program area 21,
In addition to the control program for controlling the operation of each part and changing the designated axis, the same axis designation time control program 22 that is executed when the same axis is designated from the machining programs of a plurality of systems is stored. There is. When the same axis designation time control program 22 is executed, conceptually C
The same axis designation time processing unit 28 is generated inside the PU 1.

In the system / axis name / port address storage area 23, according to the operating status of each machining program,
The axis name and port address are stored. The port address corresponding to the axis name is input in advance using the keyboard 3 and backed up by the battery.

In the system-based priority storage area 24, execution priorities when the same axis is designated by machining programs of a plurality of systems are registered in advance. FIG. 3 exemplifies the registered contents of the system-based priority storage area 24. In this example, when the C1 axis is designated by a plurality of system-specific machining programs, the first system machining program is executed with the highest priority (priority “1”), and subsequently (priority “2”). It is shown to execute a two-system machining program.

In the command value storage area 27 for each port, a command value according to the operating status of the machining program for each system is written in the port address corresponding to the designated axis.

FIG. 4 is a diagram of the vicinity of a tool rest in the numerical control apparatus 101. The C1 axis (spindle) 31 grips and rotates the workpiece 32. The first tool post 33 includes an X1 axis and a Z1 axis that are movable in the X axis and Z axis directions. The second tool rest 34 includes an X2 axis and a Z2 axis that are movable in the X axis and Z axis directions.

FIG. 5 is a flow chart showing the operation of the numerical controller 101. For convenience of explanation, the first
A first system machining program that specifies the system control axes (X1, Y1, C1) (FIG. 4) and a second system control axis (X2, Y
2, C1) (FIG. 4) is designated by the second system machining program. The CPU 1 executes the machining program of each system by time-division control, and performs the processing shown in steps S102 to S109 every time during the execution period. However, in the following description, the processing when viewed from the first system machining program will be described.

In step S102, the CPU 1 determines whether the same axis is designated by a machining program of another system, and if the same axis is designated, step S103.
If the same axis is not designated, go to step S10.
Go to 6. Here, since the C1 axis designated by the first system machining program is also designated by the second system machining program, the process proceeds to step S103. In this determination, if an axis designation command (command that designates a combination of a system and an axis) is searched from the machining program of each system, the designated axis is obtained by the axis designation command, and if the designated axes match, Good. FIG. 6 illustrates a code format including the axis designation command. In this example, the X2 axis and the Y2 axis are designated following the axis designation command "G300".

In step S103, the CPU 1 executes the same axis designation time control program 22 to read the priority order of the machining program of the system from the registered contents (FIG. 3) in the system order priority storage area 24 (FIG. 3). , Compare with the priority of machining programs of other systems that specify the same axis. If the priority of the machining program of the system is lower than the priority of the machining programs of other systems, step S
If the priority of the machining program of the relevant system is higher than that of the machining programs of other systems, the process proceeds to step S107. Here, the priority order of the first system machining program is higher than the priority order of the second system machining program, so the process proceeds to step S107.

In step S104, cutting by the machining program of the system is interrupted and the tool rest is retracted.
In step S105, the process waits until the cutting by the machining program of the system having a higher priority than the machining program of the system is completed. In step S106, when the axis designation command of the machining program of the system is read, the axis name in the system-specific axis name / port address storage area 23 is rewritten according to the operating status. A conventionally known method is used for this rewriting.

In step S107, when the axis designation command of the machining program of the system is read, the axis name in the system-specific axis name / port address storage area 23 is rewritten according to the operating condition. Here, the axis name in the system-specific axis name port address storage area 23 is rewritten to the first system control axis (X1, Z1, C1) designated by the first system machining program. A conventionally known method is used for this rewriting.

In step S108, the machining program of the relevant system is executed, axis control is performed according to the rewritten axis name, and cutting is performed. A conventionally known method is used for the processing here.

In step S109, it is determined whether or not all cutting has been completed. If all cutting has been completed, the processing is ended, and if not completed, the processing returns to step S102.

According to the first embodiment, when the same axis (for example, C1 axis) is designated from the machining programs of a plurality of systems, the axes are controlled in order from the system having the highest processing priority, so the same axis is designated. It is not necessary to create a machining program so as not to do so or to create a machining program in consideration of synchronization between systems, and the machining program can be easily created. Further, by rewriting the registered contents (FIG. 3) in the system-based priority storage area 24, the priority can be easily changed regardless of the processing parameters.

Second Embodiment FIG. 7 is a hardware configuration diagram of a numerical controller according to a second embodiment of the present invention. This numerical control device 201 has the same configuration as the numerical control device 101 (FIG. 1) of the first embodiment, except that the CPU 1a is used instead of the CPU 1 and the memory 2a is used instead of the memory 2. It differs from the first embodiment.

FIG. 8 is an extraction diagram of the CPU 1a and the memory 2a in the numerical control device 201. Memory 2a
Has almost the same internal configuration as the memory 2 of the first embodiment,
Instead of the same-axis-designating-time control program 22, the same-workspace-using control program 222 that is executed when machining programs of a plurality of systems use the same working space
The point that is provided is different from the first embodiment. When the control program 222 for using the same work space is executed, conceptually, a processing unit 228 for using the same work space is generated inside the CPU 1a. In the system-based priority storage area 24a, execution priorities when machining programs of a plurality of systems use the same work space (corresponding to FIG. 3).
Is registered in advance as in the first embodiment.

FIG. 9 is a diagram showing the vicinity of a tool rest in the numerical control device 201. The C1 axis (spindle) 41 grips and rotates the workpiece 42. The first tool rest 43 includes an X1 axis and a Z1 axis that are movable in the X axis and Z axis directions. The C2-axis (spindle) 44 grips and rotates the workpiece 45. The second tool rest 46 includes an X2 axis and a Z2 axis that are movable in the X axis and Z axis directions.

FIG. 10 is a flow chart showing the operation of the numerical control device 201. For convenience of explanation, the first system control program (X1, Z1, C1) (FIG. 9) and the second system control axis (X2, Z) are designated.
2, C2) (FIG. 9) is designated by the second system machining program, and the tool rests 43 and 46 of the two systems perform cutting using the same work space. CPU1a is
The machining program of each system is executed by time-divisional control, and during the execution period, the following steps S202 to S209 are performed one by one.
The process shown in is performed. However, in the following description, the processing when viewed from the first system machining program will be described.

In step S202, the CPU 1a determines whether or not the machining programs of other systems use the same work space. If the same work space is used, the process proceeds to step S203 and the same work space is used. If is not used, the process proceeds to step S206. Here, since the work space used by the first system machining program is also used by the second system machining program, the process proceeds to step S203.

In step S203, the CPU 1a executes the control program 222 for using the same work space,
From the registered contents (corresponding to FIG. 3) of the system-based priority storage area 24a, the priority of the machining program of the relevant system is read and compared with the priority of the machining programs of other systems using the same work space. . If the priority of the machining program of the system is lower than the priority of the machining program of the other system, the process proceeds to step S204, and if the priority of the machining program of the system is higher than the priority of the machining program of the other system, step S204. Proceed to S207. Here, the priority order of the first system machining program is higher than the priority order of the second system machining program, and thus the process proceeds to step S207.

In step S204, cutting by the machining program of the system is interrupted and the tool rest is retracted.
In step S205, the process waits until the cutting by the machining program of the system having a higher priority than the machining program of the system is completed. In step S206, when the axis designation command of the machining program of the system is read, the axis name in the system-specific / axis name / port address storage area 23 is rewritten according to the operating status. A conventionally known method is used for this rewriting.

In step S207, when the axis designation command of the machining program of the system is read, the axis name in the system-specific / axis-name port address storage area 23 is rewritten according to the operating condition. A conventionally known method is used for this rewriting.

In step S208, the machining program of the system is executed, axis control is performed according to the rewritten axis name, and cutting is performed. A conventionally known method is used for the processing here. In step S209, it is determined whether or not all cutting has been completed. If all cutting has been completed, the processing ends, and if not completed, the processing returns to step S202.

According to the second embodiment, when the machining programs of a plurality of systems use the same work space, the designated work spaces are used in order from the system having the highest machining priority, so that the same work space is not used. It is not necessary to create a machining program like this or to create a machining program in consideration of synchronization between systems, and the machining program can be easily created. In addition, it is not necessary to reduce the size of the workpiece of each system or increase the space of the entire cutting machine. Furthermore, a priority storage area for each system 24
By rewriting the registered content of a (corresponding to FIG. 3), the priority order can be easily changed regardless of the processing parameter.

[0041]

According to the numerical controller of the first configuration of the present invention, when the same axis is designated by the machining programs of a plurality of systems, the axes are controlled in order from the system having the highest priority of machining. Proceed. Therefore, it is not necessary to create a machining program so as not to specify the same axis, or to create a machining program in consideration of synchronization between systems, and the machining program can be easily created. Further, the priority order can be easily changed regardless of the processing parameter.

According to the numerical controller of the second configuration of the present invention, when the machining programs of a plurality of systems use the same work space, the work spaces are used in order from the system having the highest priority of machining, and the machining space is processed. To perform. Therefore, it is not necessary to create a machining program so as not to use the same work space, or to create a machining program in consideration of synchronization between systems, and the machining program can be easily created. Further, it is not necessary to reduce the size of the workpiece of each system or increase the space of the entire processing machine. Further, the priority order can be easily changed regardless of the processing parameter.

[Brief description of drawings]

FIG. 1 is a hardware configuration diagram of a numerical control device according to a first embodiment of the present invention.

FIG. 2 is an extraction diagram of a CPU and a memory according to the first embodiment.

FIG. 3 is an explanatory diagram of registration contents of a system-based priority storage area according to the first embodiment.

FIG. 4 is a diagram of the vicinity of a tool rest according to the first embodiment.

FIG. 5 is a flowchart showing the operation of the numerical controller according to the first embodiment.

FIG. 6 is an exemplary diagram of a code format including an axis designation command according to the first embodiment.

FIG. 7 is a hardware configuration diagram of a numerical controller according to a second embodiment of the present invention.

FIG. 8 is an extraction diagram of a CPU and a memory according to the second embodiment.

FIG. 9 is a diagram of the vicinity of a tool rest according to a second embodiment.

FIG. 10 is a flowchart showing the operation of the numerical controller according to the second embodiment.

FIG. 11 is a hardware configuration diagram of a conventional numerical control device.

FIG. 12 is an extraction diagram of a CPU and a memory of a conventional numerical control device.

[Explanation of symbols]

101,201,501 Numerical control device 1,1a, 51 CPU 2,2a, 52 Memory 3,53 Keyboard 4,54 Interface circuit 5,55 Drive part 6,56 Interface 7,57 Servo control circuit 8,58 Servo amplifier 9 , 59 Motor 10, 60 Detector 11, 61 Data I / O 20, 520 System-specific machining program area 21, 521 Control program area 22 Identical-axis control program 23, 523 System-specific / axis name port address storage area 24 , 24a Priority storage area for each system 27,527 Command value storage area for each port 28 Processing unit for same axis designation 31,41 C1 axis 32,42,45 Work piece 33,43 First tool post 34,46 Turret 2 44 C2 axis 222 Control program when using the same work space 228 Processing unit when using the same workspace B bus

Claims (2)

[Claims] 1. A numerical control device for processing multiple combinations of axes (control axes or spindles) as independent systems and simultaneously processing multiple processing programs corresponding to each system simultaneously. Same axis designation determining means for determining whether or not the same axis is designated, and when it is determined that the same axis is designated, the pre-registered machining priority for each system is selected in order from the system having the highest read priority. A numerical control device comprising: a system selecting means; and a system controlling means for permitting control of the axis only to the system selected by the system selecting means and prohibiting control of the axis by another system. . 2. A numerical controller for simultaneously processing multiple combinations of a plurality of axes (control axes or spindles) as independent systems and simultaneously processing a plurality of machining programs corresponding to the respective systems. The same work space use determination means for determining whether or not to perform processing using the same work space, and when it is determined that the same work space is used, the priority of processing registered for each system is read out and given priority. System selection means for selecting the systems in descending order, and system control means for permitting only the system selected by the system selection means to use the workspace and prohibiting the use of the workspace by other systems. A numerical control device characterized by being provided.