JPH10277879A - Interrupted cutting program restarting method and device of cutting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a processing program restarting method for an interrupted processing program and also an associate device with the method applicable to a processing machine which can restart processing of an interrupted work automatically from the position where the interruption occurred. SOLUTION: In case the processing being executed according to a certain program is interrupted for any reason, the interrupted position in the processing program is stored in an additional software by an instruction given from the first new install button 7, and if an instruction from a second new install button 9 is given after removal of the reason for interruption and setting of the work, the additional software executes the program without performing actual processing till the stored interruption position in memory and restarts and continues the normal processing in conformity to the program. The additional software to control the operation after interruption is stored in an additional software memory 17 furnished in an NC device 1 for control of the processing machine.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for resuming an interrupted machining program in a machining machine.
More particularly, the present invention relates to a method and an apparatus for resuming an interrupted machining program in a processing machine capable of automatically restarting an interrupted machining program at an intermediate stage and continuing machining.

[0002]

2. Description of the Related Art Conventionally, during processing by an NC processing machine such as an NC turret punch press, processing may be stopped in the following state.

(1) An operator notices a program error and stops the operation.

[0004] (2) The mold is stopped by being engaged.

(3) The machine stopped due to a mechanical trouble.

(4) The clamp of the workpiece is shifted and stopped by the operator.

In the above case, the cases (1), (2), and (4) are temporarily stopped and can be restarted, but it is often preferable to remove the work and start over. Also,
In the case of an emergency stop as in case (3), it is necessary to return to the beginning unconditionally and start over from home return.

[0008]

Therefore, in such a conventional technique, when the work is expensive, such as stainless steel, or when the work is stopped near the end of a long machining program, etc. Restarting from the beginning will cause a great deal of damage to the company.

For this reason, the operator searches for the sequence number of the machining program of the interrupted machining, and when re-machining, performs a sequence number search up to the sequence number and then restarts. Alternatively, it is common to start punching off until the above-mentioned sequence number, insert a stop command such as “M00” at the position of the sequence number and stop it, and then turn on punching to start machining. is there.

[0010] However, according to such a method, there is a problem that the work is complicated and the work can only be performed by a skilled person, and a work error is likely to occur.

In the case where a series of machining is performed by forming a line by a plurality of machining machines (DNC operation), for a work that was being machined when the machining machine was stopped, another work is performed by a so-called workout. Remove the part and restart from a new work to perform a series of processing.
After that, the removed work must be manually applied to the processing machine to execute the processing program (memory operation) one by one, and special handling is required. You have to change the host settings, which is troublesome. Also, the case mentioned above
In the case of an emergency stop as in the case of (3), there is a problem that the operation must be restarted from the home position unconditionally and the work efficiency is poor.

SUMMARY OF THE INVENTION An object of the present invention is to pay attention to the conventional technology as described above, and a processing machine capable of automatically resuming machining from a stopped position of a workpiece that has been stopped halfway. The present invention provides a method and an apparatus for resuming an interrupted machining program.

[0013]

In order to achieve the above object, a method of resuming an interrupted machining program in a processing machine according to the present invention according to claim 1 is a method of resuming an interrupted machining program in a processing machine performing machining in accordance with a machining program. In the above, when a reason for interrupting the machining occurs, the first new button is pressed to instruct to store the interrupted portion in the machining program. When the instruction is issued, the interrupted portion in the machining program is stored by additional software, and the interrupted reason is stored. After setting the workpiece by removing the button, press the second new button to proceed with the machining program to the interrupted location stored in the memory without performing actual machining, and after reaching the interrupted location in the machining program, Restarting to continue normal machining according to the machining program Than it is.

Therefore, if the machining performed in accordance with the machining program is interrupted for any reason, the interrupted location in the machining program is stored in the machining program by the instruction from the first new button, and the interrupted portion is stored by the additional software. When the instruction is given, the machining program is advanced without actually performing the machining to the interrupted location stored in the memory, and then the normal machining according to the machining program is restarted and continued.

An interrupted machining program resuming device in a machining machine according to the invention according to claim 2 is an interrupted machining program resuming device in a machining machine that performs machining according to a machining program stored in a machining program memory.
A first new button for instructing to memorize the interruption point in the machining program when a reason for interrupting the machining occurs, and a second button for instructing to resume machining after setting the workpiece after removing the interruption reason. A new button and a control to store the interrupted portion in the machining program according to an instruction from the first new button and to execute a machining program without performing machining to the stored interrupted portion according to an instruction from the second new button. And an additional software memory for storing additional software for controlling the operation to proceed.

Therefore, if the machining performed in accordance with the machining program is interrupted for any reason, the interrupted portion in the machining program is stored in the additional software by an instruction from the first new button, and the interruption reason is removed. After the work is set, if there is an instruction from the second new button, the normal operation according to the machining program is performed after the machining program is advanced without actually performing the machining to the interrupted point stored in the memory by the operation of the additional software. Processing is resumed and continued.

An interrupted machining program resuming device in a machining machine according to the invention according to claim 3 is characterized in that the additional software memory according to claim 2 is provided in an NC device for controlling the machining machine. It is.

Therefore, additional software for controlling the operation after the interruption is stored in the additional software memory provided in the NC device for controlling the processing machine. This additional software memory is provided separately from a machining program memory that stores an original machining program.

[0019]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 shows an NC apparatus 1 in a turret punch press (not shown) as an interrupted machining program resuming apparatus in a processing machine according to the present invention.
In the NC device 1, the CPU 3, which is a central processing unit,
An input means 5 such as a keyboard, a first new button 7 for instructing to store the contents of a machining interruption, a machining program is advanced without performing machining to a position where the machining is interrupted, and then the machining is continued. A second new button 9 for instructing, various buttons 11 such as a button for stopping machining when an abnormality occurs, various limit switches 13 for positioning the origin of the work, and the like are connected, and input at any time. It is possible.

The CPU 3 has a machining program memory 15 for storing a machining program, an additional software memory 17 for storing additional software for instructing to store an interrupted sequence number, and the like. A pointer position memory 19 for storing whether or not the block has been executed is connected to be able to input and output.

Further, the CPU 3 has a D / A converter 21,
23 and 25 are connected, and amplifiers 27, 29,
X-axis motor 3 for moving the workpiece in the X-axis direction via 31
3. It is connected to a Y-axis motor 35 for moving the workpiece in the Y-axis direction, a turret motor 37 for indexing a mold mounted on the turret, and the like.

Also, for example, a hydraulic cylinder 45 which is a driving source of the press via a press on / off switch 39 for turning on / off the press, a D / A converter 41 and an amplifier 43.
And a switching valve 47 for controlling the pressure. That is,
The hydraulic cylinder 45 is connected to a hydraulic motor 49 via a switching valve 47.
, And is controlled to perform a predetermined operation in accordance with the position of the switching valve 47.

Next, the operation will be described with reference to FIGS.

First, referring to FIG. 2, in normal operation, when the operator presses a normal start button (step SA1), the pointer starts to move (step SA1).
2) The machining program starts to operate (step SA3).
The position of the pointer at this time is always recognized (step SA4), and if there is an instruction as described later, the position of the pointer is stored (step SA5).

When the machining program starts running, the G code is read from the execution block memory (step SA).
6) This is translated (step SA7), a predetermined operation is performed (step SA8), and the operation result is instructed to the actuator (step SA9). At this time, the punch on / off switch 39 is on (step SA10), and normal punching is performed by the hydraulic cylinder 45 or the motor 53.

Next, referring to FIG. 2 and FIG.
A method and an operation of resuming a program from an emergency stop when an abnormality occurs will be described. In FIG. 3, MMC indicates a man-machine control unit, PMC indicates a sequence unit, and CNC indicates a machine tool having a built-in computer.

First, when an abnormality occurs, the processing machine automatically issues a stop command, or when the operator presses the button 11 to issue a stop process (emergency stop, etc.), the PMC
A stop command is issued to the machine tool via and the machine tool stops.

The operator presses the first new button 7 (step SB1 in FIG. 2) and instructs to store various information at the time of machining interruption (step SB in FIG. 2).
2). Therefore, if the processing contents are always stored, it is not necessary to press the first new button 7.

When the first new button 7 is pressed (step SB1 in FIG. 2), the PMC turns on a predetermined lamp and informs the CNC that the processing has been interrupted. The interrupted sequence number is stored in the pointer position memory 1 by the additional software.
9 (step SB2 in FIG. 2). Or C
The execution pointer may be stored on the NC software. At the same time, it indicates that the pointer has been stored.

The operator sets the interrupted work by returning to the home position, resetting the emergency stop, and pressing the second new button 9 to instruct processing to continue (step SB3 in FIG. 2). In response to the instruction from the second new button 9, the PMC performs processing for continuing processing, and the CNC keeps the pointer turned off without actually processing until the interrupted sequence number is turned off (step SB4 in FIG. 2). The pointer is moved by moving (dry running) or skipping and executing only coordinate processing such as offset processing and pattern processing (step SB5 in FIG. 2).
At this time, the additional software instructs the PMC to perform the processing in a punch-off state, and the MMC displays the punch-off. Subsequent processing is continued from the stored sequence number.

Thereafter, the additional software instructs the PMC to perform a punch-on operation (step SB4 in FIG. 2) to indicate that the MMC has been turned on. In response to the additional software instruction, the CNC automatically performs the normal mode (punch-on operation). ) To continue the interrupted machining (steps SA3 to SA9 in FIG. 2). Then, normal processing is performed from the next work (steps SA1 to SA9 in FIG. 2).

Based on the above results, the conventional NC apparatus 1 is provided with the first new button 7 and the second new button 9, and the location where the machining in the machining program is interrupted is stored by additional software, and the original machining program is changed. Since the processing can be continued from the interrupted position by the additional software without performing the processing, the processing can be continued by a simple operation even by a non-expert. In addition, it is possible to eliminate a processing error and a waste of a work.

The present invention is not limited to the above-described embodiment, but can be embodied in other modes by making appropriate changes. That is, in the above-described embodiment, the case where the additional software memory 17 is provided inside the NC apparatus 1 has been described.
C may be provided.

Although a turret punch press has been described as a processing machine, the present invention is not limited to this and can be applied to other processing machines or line processing machines.

[0036]

As described above, in the method of resuming the interrupted machining program in the machining machine according to the first aspect of the present invention, if the machining performed according to the machining program is interrupted for any reason, the first new button is pressed. The interrupted point in the machining program is stored in the additional software by the instruction of the above, and when there is an instruction from the second new button, the machining program is advanced to the interrupted point stored in the memory, and then the normal machining according to the machining program is performed. Is resumed and continued, so that even a non-skilled person can easily resume the processing and not waste the work. Further, since the original machining program is not changed, normal machining can be performed from the next work.

In the apparatus for resuming the interrupted machining program in the machining machine according to the second aspect of the present invention, if the machining performed in accordance with the machining program is interrupted for any reason, the interrupted portion in the machining program is instructed by the first new button. Is stored by additional software, and after setting the work after removing the reason for interruption, if there is an instruction from the second new button, the actual processing up to the interrupted location stored in the memory is performed by the operation of the additional software. Since the normal machining according to the machining program is resumed and continued after the machining program is advanced, the machining can be easily resumed even by a non-expert, and the work is not wasted. Further, since the original machining program is not changed, normal machining can be performed from the next work.

In the apparatus for resuming an interrupted machining program in a machining machine according to a third aspect of the present invention, N
Since the additional software for controlling the operation after the interruption is stored in the additional software memory provided in the C device, the program resuming device can be easily formed by using the conventionally used NC device.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a program resuming device in a processing machine according to the present invention.

FIG. 2 is a block diagram showing an overall flow of normal processing and processing by a program resuming method in the processing machine according to the present invention.

FIG. 3 is an explanatory diagram showing a flow of a restart operation by a program restart method in the processing machine according to the present invention.

[Explanation of symbols]

 1 NC device (machining program restart device) 7 First new button 9 Second new button 17 Additional software memory 19 Pointer position memory

Claims (3)

[Claims] 1. A method for resuming an interrupted machining program in a machining machine that performs machining according to a machining program,
When a reason for interrupting machining occurs, the first new button is pressed to instruct to store the interrupted point in the machining program, and when this instruction is received, the interrupted point in the machining program is memorized by additional software, and the interrupted event is determined. After setting the workpiece, press the second new button to advance the machining program to the memory at the interrupted point without performing actual machining, and after reaching the interrupted point in the machining program, execute the machining program. Restarting an interrupted machining program in a machining machine, characterized by resuming normal machining according to the following. 2. An apparatus for resuming an interrupted machining program in a machining machine which performs machining in accordance with a machining program stored in a machining program memory, wherein an interrupted portion in the machining program is stored when an event to interrupt the machining occurs. A first new button for instructing, a second new button for instructing to resume machining after setting the workpiece by removing the interruption reason, and an interruption point in the machining program according to an instruction from the first new button. And an additional software memory for storing additional software for controlling to advance a machining program without performing machining to the memorized interruption point according to an instruction from the second new button. An interrupted machining program resuming device for a machining machine. 3. The apparatus according to claim 2, wherein said additional software memory is provided in an NC apparatus for controlling said processing machine.