JPH04324502A - Numerical controller for controlling program synchronization between multiple systems - Google Patents

Abstract

PURPOSE:To provide a numerical controller which can control program synchronization between arbitrary plural systems. CONSTITUTION:The 1st storing means A stores the 1st and 2nd synchronizing commands given in the program of each system. The 2nd storing means B stores each system in groups. The group read out by a control means C from the 2nd storing means B reads out the 1st synchronizing command for the same system from the 1st storing means A and controls the program synchronization of the system. Then the group read out by the control means C from the 2nd storing means B reads out the 2nd synchronizing command for different systems from the 1st storing means A and controls program synchronization between the different systems.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a numerical control device for controlling program synchronization between systems in a numerically controlled lathe having multiple systems.

0002

[Prior Art] FIG. 5 is a diagram showing an example of the configuration of a numerically controlled lathe having multiple systems, in which a first main shaft S1 rotates a first workpiece W1, and its movement is controlled in the X1-axis direction and the Z1-axis direction. A system constituted by the first tool rest T1 is referred to as a first system, and a system constituted by the first main shaft S1 and the second tool rest T2 whose movement is controlled in the X2-axis direction and the Z2-axis direction is referred to as the first system. The second system is a system consisting of the second main shaft S2 that rotates the second workpiece W2, and the third tool rest T3 whose movement is controlled in the X3-axis direction and the Z3-axis direction.
A system constituted by the second main shaft S2 and a fourth tool post T4 whose movement is controlled in the X4-axis direction and the Z4-axis direction is referred to as a fourth system.

FIG. 6 is a block diagram showing an example of a conventional numerical control device for controlling program synchronization between systems in a numerically controlled lathe having a first system and a second system among the four systems described above. , a program synchronization command PS1 is read out by the first system synchronization command reading unit 1 from the machining program of the first system that is executed sequentially, and stored in the first system synchronization command memory 3. The program synchronization command PS2 is read out by the second system synchronization command reading section 2 and stored in the second system synchronization command memory 4. Each program synchronization command PS1 from the synchronization command memory 3, 4 of each system
, PS2 are read out by the synchronization command reading unit 5 and sent to the synchronization command comparison unit 6, and each program synchronization command PS1, PS2
are compared and the comparison result CR is sent to the control signal generation section 7. Then, control signals SC1 and SC2 for each system are generated based on the sent comparison result CR and sent out to the outside.

In such a configuration, an example of its operation will be explained with reference to the flowchart of FIG. 7. The first system synchronization command reading section 1 determines whether a program synchronization command has been issued to the machining program of the first system. (Step S1)
If the program synchronization command is not issued to the machining program of the first system, the process advances to step S3. on the other hand,
If a program synchronization command is specified in the machining program of the first system, the program synchronization command is
Store it in the system synchronization command memory 3 (step S2)
. Next, the second system synchronization command reading unit 2 determines whether or not a program synchronization command has been commanded to the machining program of the second system (step S3), and determines whether a program synchronization command has been commanded to the machining program of the second system. If not, all processing ends. On the other hand, if a program synchronization command is issued to the machining program of the second system,
The program synchronization command is stored in the second system synchronization command memory 4 (step S4). Then, the synchronization command comparison section 6 reads the synchronization command memory 3 and 4 from the synchronization command reading section 5.
It compares each program synchronization command sent via (step S5) and determines whether the code number of the program synchronization command commanded to the machining program of the first system is commanded to the machining program of the second system. If the code number is greater than the code number of the current program synchronization command, the comparison result is sent to the control signal generation section 7. The control signal generation unit 7 generates a control signal to stop the progress of the machining program of the first system, put the first system on standby, and start the progress of the machining program of the second system, and outputs it to the outside ( Steps S6 and S7), all processing ends.

On the other hand, if the code number of the program synchronization command commanded to the machining program of the first system is smaller than the code number of the program synchronization command commanded to the machining program of the second system, the comparison result is The signal is sent to the control signal generator 7. The control signal generation unit 7 generates a control signal to stop the progress of the machining program of the second system and put the second system on standby, and also starts the progress of the machining program of the first system, and outputs it to the outside ( Steps S8 and S9), all processing ends. On the other hand, if the code number of the program synchronization command commanded to the machining program of the first system is the same as the code number of the program synchronization command commanded to the machining program of the second system, the comparison result is used to generate a control signal. Send it to Department 7. The control signal generation unit 7 generates a control signal to start the processing programs of the first system and the second system and outputs it to the outside (step S11), and ends all processing.

[0006]

[Problems to be Solved by the Invention] In the above-mentioned conventional numerical control device that controls program synchronization between multiple systems, it is difficult to achieve program synchronization between arbitrary systems in a numerically controlled lathe having four systems as shown in FIG. The problem was that it was not possible. The present invention was made in view of the above-mentioned circumstances, and an object of the present invention is to provide a numerical control device that can perform program synchronization between any plurality of systems.

[0007]

[Means for Solving the Problems] The present invention relates to a numerical control device for controlling program synchronization between multiple systems, and the above object of the present invention is to control the first synchronization commanded by the program of each system. a first storage means for storing commands and a second synchronization command; a second storage means for storing the respective systems in groups; and a first storage means for storing the respective systems in groups; A synchronization command is read from the first storage means to control program synchronization between the systems, and a second synchronization command for a system whose group is different from the second storage means is read from the first storage means. This is achieved by providing a control means for reading and controlling program synchronization between the systems.

[0008]

[Operation] The present invention uses two types of synchronization commands, and since each system can be arbitrarily grouped, program synchronization can be achieved by executing two types of synchronization commands based on the groups. can be performed between any number of systems.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram showing an example of a numerical control device of the present invention for controlling program synchronization between each system in a numerically controlled lathe having four systems shown in FIG.
The program synchronization command PS1 is sent from the machining program of the first system that is executed sequentially to the first system synchronization command reading unit 11.
The synchronization commands are read out and stored in the first and second synchronization command memory 15 of the first system, where they are distinguished into a first synchronization command and a second synchronization command. Similarly, the program synchronization commands PS2, PS3, and PS4 from the machining programs of the second, third, and fourth systems are
, the third and fourth system synchronization command reading units 12, 13, and 14, respectively, and are distinguished into the first synchronization command and the second synchronization command, and the first and second synchronization commands of the second, third, and fourth systems are read out. They are stored in synchronization command memories 16, 17, and 18, respectively, and constitute a first storage means A. In the group storage memory 19, the group to which each system belongs is preset by a group number using a keyboard or the like, and constitutes a second storage means B. The group SG of each system is read out from the group storage memory 19 to the first synchronization command reading section 20 of the same group and the second synchronization command reading section 21 of a different group. Then, in the first synchronization command reading unit 20 of the same group, the first and second synchronization command memories 15 and 16 of each system are read out.
, 17, 18 to the first synchronization command SP1 of the same group.
1, SP21, SP31, and SP41 are read out and sent to the first synchronization command comparison section 22, and the respective first synchronization commands SP11, SP21, SP31, and SP41 are compared, and the comparison result CR1 is sent to the control signal generation section 24. sent to.

On the other hand, the second synchronization command reading section 21 of the different group reads the first and second synchronization command memories 15 and 16 of each system.
, 17, 18, the second synchronization command DP of a different group
12, DP22, DP32, and DP42 are read out and the second
The second synchronization commands DP12, DP22, DP32, and DP42 are compared, and the comparison result CR2 is sent to the control signal generation section 24. Then, the sent comparison results CR1, CR2
Based on the control signals SC1, SC2, SC3,
SC4 is generated and output to the outside, and constitutes control means C.

In such a configuration, an example of its operation will be explained with reference to the flowchart of FIG. 2. The four systems of machining programs are started simultaneously by an operator's activation operation and are executed sequentially from the first block. Each system synchronization command reading section 11, 12, 13, 14 determines whether a program synchronization command has been instructed to the machining program of each system (step S21), and determines whether a program synchronization command has been commanded to the machining program of each system. If not, the process advances to step S42. On the other hand, if a program synchronization command has been issued, it is determined whether or not it is a program synchronization command of the first system (steps S22, S23);
If it is not a program synchronization command of the first system, the process advances to step S27. On the other hand, if it is a program synchronization command of the first system, it is further determined whether or not it is the first synchronization command (step S24), and if it is the first synchronization command, it is System first and second synchronization command memory 1
5 (step S25), and the second
If it is a synchronization command, it is stored in the second area of the first system first and second synchronization command memory 15 (step S26). Then, the same process is performed up to the fourth system (
Steps S27, S28).

Next, the first synchronization command reading unit 20 of the same group reads out the group of each system from the group storage memory 19, and first reads the first synchronization command of the first system into the first synchronization command of the first system.
- Read from the second synchronization command memory 15, then read the first synchronization command of the second system, which is the same as the group of the first system, from the second system first and second synchronization command memories 16, and compare the first synchronization commands. 22. The first synchronization command comparison unit 22 compares the first synchronization command of the first system and the first synchronization command of the second system that have been sent out (step S30), and sends the comparison result to the control signal control unit 24. Send. Control signal control section 2
4, when the code number of the first synchronization command of the first system is larger than the code number of the first synchronization command of the second system, the progress of the machining program of the first system is stopped (step S31
), when the code number of the first synchronization command of the first system is smaller than the code number of the first synchronization command of the second system, the machining program of the first system is started (step S32
). Then, similar processing is performed up to the fourth system (steps S33, S34).

Next, the control signal generation unit 24 determines whether or not the progress of the first system machining program is stopped (step S
35, S36), if the progress of the first system machining program is stopped, the process advances to step S40. On the other hand, if the progress of the machining program of the first system is not stopped, the second synchronization command reading section 21 of a different group
9, read out the groups of each system, and first read out the groups of the first system and the second system.
The synchronization command of the first system is read from the first and second synchronization command memory 15 of the first system, and then the second synchronization command of the third system, which is different from the group of the first system, is read out from the first and second synchronization command memory 1 of the third system.
7 and sends it to the second synchronization command comparison section 23. The second synchronization command comparison unit 23 compares the second synchronization command of the first system and the second synchronization command of the third system that have been sent (step S37), and sends the comparison result to the control signal control unit 24. do. When the code number of the second synchronization command of the first system is larger than the code number of the second synchronization command of the third system, the control signal control unit 24 stops the progress of the machining program of the first system (step S38). If the code number of the second synchronization command of the first system is smaller than the code number of the second synchronization command of the third system, the machining program of the first system is started (step S39). Then, the same process is applied to the fourth
It is determined whether the machining programs for all systems have been completed (steps S40 and S41).
2) If the machining programs for all systems have not been completed, the process returns to step S21 and the above-described operations are repeated, and when the machining programs for all systems have been completed, all processes are completed.

For example, the first, second, third, fourth shown in FIG.
Among the system machining programs K1, K2, K3, and K4,
The machining program progress status of each system is explained below assuming that K1 and K2 and K3 and K4 are grouped as the same group, and the first synchronization command is performed by P code and the second synchronization command is performed by Q code. do. The four systems of machining programs are started simultaneously by an operator's activation operation and are executed sequentially from the first block. The machining program K1 of the first system is changed to the machining program K of the second system of the same group at the time when P10 is read.
It is in a standby state until P10 of No. 2 is read. The machining program K2 of the second system is in a standby state until Q1 of the machining program K4 of the fourth system of a different group is read at the time when Q1 is read. The machining program K3 of the third system is the fourth machining program in the same group at the time P1 is read.
The system is in a standby state until P1 of the machining program K4 of the system is read, and when P2 is read, the system is in a standby state until P2 of the machining program K4 of the fourth system of the same group is read. In addition, although four systems were explained in the above-mentioned embodiment, the present invention can be applied to any number of systems.

[0015]

[Effects of the Invention] As described above, according to the numerical control device for controlling program synchronization between multiple systems of the present invention, program synchronization can be performed between arbitrary multiple systems in a numerically controlled lathe having multiple systems. Therefore, complex shapes can be processed efficiently.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an example of a numerical control device for controlling program synchronization according to the present invention.

FIG. 2 is a first flowchart showing an example of the operation of the device of the present invention.

FIG. 3 is a second flowchart showing an example of the operation of the device of the present invention.

FIG. 4 is a diagram for explaining the progress of a machining program in the apparatus of the present invention.

FIG. 5 is a diagram showing a configuration example of a numerically controlled lathe having multiple systems.

FIG. 6 is a block diagram showing an example of a conventional numerical control device that controls program synchronization.

FIG. 7 is a flowchart showing an example of the operation of a conventional device.

[Explanation of symbols]

19 Group storage memory 20 First synchronization command reading unit 21 of the same group
Second synchronization command reading unit 22 of a different group
First synchronization command comparison section 23 Second synchronization command comparison section

Claims (1)

[Claims] 1. A numerical control device for controlling program synchronization between multiple systems, comprising: a first storage means for storing a first synchronization command and a second synchronization command commanded by the program of each system; A second storage means for grouping and storing the respective systems; and a first synchronization command for the same system read from the second storage means are read from the first storage means, control means for controlling program synchronization, reading out from the first storage means a second synchronization command for systems in different groups read from the second storage means, and controlling program synchronization between the systems; A numerical control device for controlling program synchronization between multiple systems, characterized by: