JPS622303A - Restart function device for program - Google Patents

Abstract

PURPOSE:To execute a restart of a program on the way, to simplify the work, and to raise the production efficiency of a machine by providing a prescribed rule between the program and a control device of the machine side, and bringing the program to a block skip by its collation. CONSTITUTION:When a set switch 4 is operated and a program restart function becomes effective, a collating circuit 5 collates an output of an M.T code detecting circuit 2 with the storage contents of a program restart state storing circuit 3. When the result of collation of the detected M.T code and the program restart state does not coincide, the circuit 5 outputs immediately a command signal for making a series of working programs skip from an optional block skipping circuit 6, to an NC device 1, and also outputs a completing signal FIN from an auxiliary function completing circuit 8. When the result of collation coincides, a reset signal is applied to the circuit 3. In this way, the optional block skip is released, and the subsequent program is executed.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a program restart function device in an NC (numerical control) machine.

<Prior Art and Problems> Current NC machines can only execute instructions from the beginning of a program. However, with NC machine tools, etc., it is important for production efficiency.

It may become necessary to restart the program midway through.

SUMMARY OF THE INVENTION An object of the present invention is to provide a device that allows a machine-side control device to have a program restart function even when the NC device does not have a program restart function.

Means for Solving Problems> A program restart function device according to the present invention which achieves the above-mentioned object is configured to extract codes indicating status such as M and T codes from NC data outputted from an NC device. a program restart state storage means for storing the state to be restarted in the NC program; and a means for comparing the detected code state with the stored state. The present invention includes means for instructing the NC device to perform an optional skip until the next verification, while instructing the NC device to cancel the previous optional skip when the verification result is a match.

<Function> While the program progresses to the pre-memorized state, N is pressed.
By instructing the C device to skip the optional block, the program is not actually executed. When the program progresses to a pre-memorized state, if you command the NC device to release the optional flox,
The subsequent programs are executed from this state. In other words, the program will be restarted from the point where it left off.

Embodiment> Hereinafter, an embodiment of the program restart function device according to the present invention will be described with reference to FIGS. 1 to 3. FIG. 1 is a block diagram of the embodiment device.

FIG. 2 is a flowchart of its operation, and FIG. 3 is a flowchart of its verification subroutine.

The embodiment shown in FIGS. 1 to 3 is applicable to both normal program operation and program restart operation. Additionally, M and T codes are used as codes to indicate the status.

In FIG. 1, l is an NC device, 2 is M, a T code detection circuit, 3 is a program restart state storage circuit, 4 is a set switch, and 5 is a verification circuit.

6 is an optional block skip circuit, 7 is a reset signal, 8 is an auxiliary function completion circuit, 9 is a mechanical device state storage device, 10 is an M, T execution circuit, and 11 is a mechanical device. A portion 12 surrounded by a two-dot chain line is a program restart function device.

In the NC program, enter the block skip symbol "/" at the part of the block you wish to skip. Therefore, taking the case of a tool as an example, the NC program can be simply abbreviated as ``Cao'' as shown in Table 1.

Table 1 Take the NC program shown in Table 11 as an example.

The operation of the embodiment device will be explained with reference to FIGS. 1 to 3.

The M and T code detection circuit 2 detects the M and T codes from the NC data provided by the NC device gtl, and outputs them to the collation circuit 5 and the machine state storage device 9. The mechanical equipment state storage device 9 stores and updates the M, T code detected by the M, T code detection circuit 2, and also inputs the M, T code executed by the M, T% row circuit 10 to enter the execution completion state. refresh your memory. This is done by inputting the M, T code from the M, T code detection circuit 2 once, so that it does not need to be executed if the M, T code is input from the M, T code detection circuit 2, which is the same as the machine state. ing.

The status (M, T code) during program operation is input from the mechanical device status storage device 9 to the program restart status storage circuit 31 and is stored one by one. set switch 4
is a switch for restarting the program when the program is interrupted in the middle of the program immediately before the operator operates it. When this set switch 4 is operated, a set signal is sent to the program restart state memory circuit 3. is given and the program restart function is enabled. The state to be restarted is the content stored in the program restart state storage circuit 3 when the set switch 4 is operated. This is maintained until the reset signal 7 is applied. When it is reset, the memory contents are sequentially updated again, but it is set again when it is interrupted midway.

The verification circuit 5 verifies the output of the T-code detection circuit 2 and the memory contents of the machine status storage device 9, and M during normal program operation.
The output of the T code detection circuit 2 is compared with the stored contents of the program restart state storage circuit 3.

Therefore, in the case of normal operation in which the set switch 4 is not operated and the program restart function is not enabled because the program is executed from the beginning, the detected M and T codes match the mechanical device status. If so, the verification circuit 5 does not take any action to the M and T execution circuits 1O, and sends the completion signal FI to the NC device via the auxiliary function completion circuit 81.
Output N. If the comparison results do not match, the M, T code commanded by the M, T code detection circuit 2 is given to the M, T execution circuit 10 to execute it, and the memory contents of the mechanical device state storage device 9 are updated. , and auxiliary function completion circuit 871)
outputs a completion signal FIN to the NC device fltx. Izun
Even in this case, the primary Canadian program is executed.

On the other hand, if the set switch 4 is operated and the program restart function is enabled.

If the comparison results between the detected M and T codes and the program restart state do not match, the verification circuit 5 immediately issues a command to the NC device 1 from the optional block skip circuit 6 1 to skip a series of program programs. At the same time, the completion signal FIN is output from the auxiliary machine completion circuit 8. If the comparison result is a match, a reset signal is given to the program restart state storage circuit 31. From this point on, the optional blocks are cleared and the subsequent programs are executed.

In FIG. 3, the block skip SW, ON in step 32 refers to the optional block skip circuit 6.
This is to issue a command to give a command to the NC device. Also.

FIN ON in step 33 is the auxiliary function completion signal on the machine side of the auxiliary function sent to the NC equipment.
This signal is received by the NC device and the program moves on to the next program.

In other words, if the verification subroutine results in a verification mismatch (No), the block skip SW is turned on and the subsequent program is skipped, but the step 330 FIN ON is
indicates completion of the auxiliary function during verification. Furthermore, the dummy M transmission in step 34 is as follows.

This is the M code sent to the NC equipment.

Why is there this Daba M code?

Since the program is prefetched on the NC device 1 side to speed up the processing time, even if a block is skipped, the prefetched block portion will be executed, so that part will not be processed.

However, it must perform the same action every time and be non-hazardous.

For example, it can be used by changing the coolant discharge (M code). Step 350 FIN O
N is the completion signal of the daj-m transmission.

I would like to add an additional note regarding the completion of the auxiliary function.

When the NC device executes a program, there are things that must be handled not only by the NC axis but also by the mechanical device, such as tool exchange, turning on and off of cutting oil, rotation of the main shaft, etc. In this case, M, S, T(7)% codes and reading signals are transmitted as commands to be processed by the NC equipment spatula 1 machine side.

On the machine side, read the M, S, and T signals.

Execute the machine-side action corresponding to that code.

The auxiliary function completion signal FIN is given to the NC equipment. When the FIN signal is input to the NC device, the program moves to the next program. That is, the auxiliary function completion signal FIN is intended to provide an interlock between the NC device and the machine-side control device.

<Effects of the Invention> According to the present invention, a certain rule is established between the program and the machine-side control device, and poodaram is block skipped by checking the rule, so that the program can be restarted from the middle. Became. This simplifies the work of the operator and increases the production efficiency of the NC machine.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a device according to an embodiment of the present invention, and FIG.
The figure is a flowchart of its operation, and FIG. 3 is a flowchart of its verification subroutine. In the drawings, l is an NC device, 2 is M, a T code detection circuit, and 3
is a program restart state memory circuit, 4 is a set switch,
5 is a verification circuit, 6 is an optional block skip circuit, 7 is a reset signal, 8 is an auxiliary function completion circuit, 9 is a mechanical device state storage device, IO is an M, T execution circuit, and 11 is a mechanical device.

Claims (1)

[Claims] A means for detecting a code indicating a state such as an M/T code from NC data output from an NC device, a program restart state storage means for storing a state to be restarted in an NC program, and a means for detecting a state of the detected code. A means for comparing the state with the stored state, and an NC when the result of the comparison does not match.
A program restart function device comprising means for instructing the device to skip an optional block until the next verification, and instructing the device to cancel the previous optional block skip when the verification result is a match.