JP4627821B2 - Laser processing apparatus and interrupt processing method thereof - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an NC processing apparatus and an interrupt processing method thereof, and in particular, permits manual or automatic interrupt processing quickly to an NC processing apparatus in automatic operation according to a predetermined processing schedule. The present invention relates to an NC machining apparatus that facilitates return to the original machining program after interruption and an interrupt processing method thereof.
[0002]
[Prior art]
In recent years, continuous unmanned operation has been performed in various NC processing apparatuses. For example, in the field of laser processing equipment, a material placement pallet is arranged on a work table in a replaceable manner, and material is carried into and out of the work table for each material placement pallet. Some of these materials perform laser processing. Furthermore, for continuous automatic operation, a pallet stocker for storing a plurality of material mounting pallets so as to be put in and out of each shelf, and a pallet for removing the material mounting pallets from the pallet stocker and transporting them to a work table in an exchangeable manner. A laser processing apparatus having a changer as an accessory is known.
[0003]
In the laser processing apparatus, in order to reduce the amount of axial movement of the processing head, rather than using a material unit processing program (sheet program), one product is laser processed, that is, one product Product machining programs that define machining trajectories are often used. Also, when machining multiple products of the same product on one material, use a multi-processing program that repeatedly executes one product machining program as many times as the number of products processed, and when machining multiple types of products on one material A multi-job program that assigns a product processing program of each product to a material and sequentially executes each product processing program is used.
[0004]
An NC machining apparatus that sequentially executes a plurality of machining programs in a continuous automatic operation usually has a machining schedule file in which a machining schedule is registered, a machining program file in which a plurality of machining programs are registered, and a plurality of machining condition data. And a registered machining condition file.
[0005]
In the machining schedule file, parameters such as the order of machining programs to be sequentially executed, the number of machining machines to be machined by each machining program, that is, the number of machining program repetitions, the edge cutting width, and the crosspiece (sun) width are registered.
A plurality of machining programs created in advance by an automatic programming device or the like are registered in the machining program file.
In the processing condition file, a plurality of processing conditions including processing speed, laser output and pulse conditions, assist gas supply specifications, and the like are registered according to the material of the processing target material, the plate thickness, and the like.
[0006]
During the schedule operation of such NC machining equipment, if there is a situation that requires urgent machining apart from the schedule, wait for the machining program for the plate currently being machined to finish before performing interrupt machining. It was. When the interrupt processing is completed, the schedule operation is resumed from the program to be executed next to the processing program completed before the interrupt processing.
[0007]
Further, when it is desired to perform interrupt machining immediately, the NC machining apparatus is stopped in the middle of the machining program to perform the interrupt machining. When the interrupt processing is completed, the operator rewrites (patches) the processing program so as to skip the processed part of the processing program interrupted by the interrupt, and the scheduled operation is resumed by this rewritten program. It was.
[0008]
[Problems to be solved by the invention]
However, in the conventional interrupt method, interrupt processing cannot be performed until the processing of the plate by the processing program being executed by the schedule operation is completed, and if processing is performed with a long program such as nesting data, There was a problem that it took a long time until interrupt processing became possible, and quick interrupt processing could not be performed.
[0009]
In addition, it is possible to forcibly stop the plate being processed and perform interrupt processing, but to resume the original program that was scheduled to run after completion of interrupt processing, processing before interrupt The operator has to modify the program in order to skip the finished part, and there is a problem that the program cannot be modified unless it is an expert.
[0010]
Further, even a skilled operator has a problem that it takes a long time to correct a long program such as nesting data.
[0011]
In view of the above problems, an object of the present invention is to provide an NC machining apparatus and an interruption processing method that can perform rapid interruption machining.
It is another object of the present invention to provide an NC machining apparatus and its interrupt processing method that do not require manual correction of the interrupted original program.
Another object of the present invention is to provide an NC machining apparatus capable of returning to the original program interrupted in a short time and an interrupt processing method thereof.
[0012]
[Means for Solving the Problems]
In order to achieve the above object, the present invention is a laser processing apparatus for processing a material taken out from an automatic warehouse according to a processing schedule, and whether or not there is an interrupt request during execution of the processing program instructed by the processing schedule. If the interrupt determination means and the interrupt determination means determine that there is an interrupt request, the execution of the non-interruptible command in the machining program is continued and the execution of the interruptable command is interrupted. The execution program is rewritten so as to skip the execution interruption means for interrupting the execution of the machining program and the end of the machining feed executed immediately before the interruption from the first machining feed command in the machining program. Processing program rewriting means for creating a temporary file, temporary storage means for storing the temporary file, and execution of an interrupt processing program A write execution unit, after the interrupt ends, by executing from the beginning by calling a temporary file from the temporary storage means, and operation resuming means for resuming the machining program was interrupted by setting specific processing conditions In the temporary file, a unique sequence number is inserted in the machining program next to the cutting feed end command immediately before interruption, and the same machining condition number as that selected when the processing machine is stopped is processed. A condition number command for specifying a condition is inserted after the sequence number is inserted, and this processing condition number is a number of a processing condition file in which processing conditions for processing speed, laser output, and assist gas supply specifications are registered in advance. To set the specific processing conditions It is a laser processing apparatus.
[0013]
In order to achieve the above object, Laser processing equipment The non-interruptible command includes a machining feed command and a command in a user macro and a command in a subprogram, and the interruptable command includes a fast-forward command that is not in a user macro and a subprogram. The gist. The gist of the invention is that the temporary storage means for storing the temporary file is configured to enable further interrupt processing during interrupt processing.
[0014]
In order to achieve the above object, the present invention is an interrupt processing method of a laser processing apparatus for processing a material taken out from an automatic warehouse according to a processing schedule, and is interrupted during execution of a processing program instructed by the processing schedule. If it is determined that there is an interrupt request in the interrupt determination process for determining whether there is an interrupt request and the interrupt determination process, it is possible to continue execution of an instruction that cannot be interrupted in the machining program and to interrupt An execution interruption step of interrupting execution of a simple command and interrupting the execution of the machining program, and skipping from the first machining feed command in the machining program to the end of the machining feed executed immediately before the interruption. A machining program rewriting step for creating a temporary file in which the machining program is rewritten, and a storage processor for storing the temporary file in a temporary storage means And an interrupt execution step for executing an interrupt processing program, and after the interruption, the processing is interrupted by setting a specific processing condition by calling the temporary file from the temporary storage means and executing it from the beginning. Operation restart process to resume the program In the temporary file, a unique sequence number is inserted in the machining program next to the cutting feed end command immediately before the interruption, and is the same as the machining condition number selected when the processing machine is stopped. A condition number command for specifying a processing condition is inserted after the sequence number is inserted. This processing condition number is a number of a processing condition file in which processing conditions for processing speed, laser output, and assist gas supply specifications are registered in advance. The gist is to set the specific processing condition by being This is an interrupt processing method of the laser processing apparatus.
[0015]
In order to achieve the above object, Laser processing equipment In the interrupt processing method, the non-interruptible command includes a machining feed command, a command in a user macro, and a command in a subprogram, and the interruptable command is not in a user macro or a subprogram. The gist is to include a directive.
[0016]
In order to achieve the above object, Laser processing equipment In the interrupt processing method, the machining program rewriting step includes a step of inserting a unique sequence number n in the machining program into a block next to a machining feed command executed at the end of the machining program, A step of inserting an unconditional branch command to the block having the sequence number n after the command required to start machining, and the same machining condition as the machining condition number selected when the execution is interrupted are specified. And a step of inserting a condition number command to be inserted into a block next to the block in which the sequence number n is inserted.
[0017]
In order to achieve the above object, Laser processing equipment In the interrupt processing method, the machining program rewriting step includes a step of inserting a unique sequence number n in the machining program into a block next to the cutting feed command executed at the end of the machining program, The sequence number n inserts the GOTOn command after the command necessary to start machining and the condition number command specifying the same machining condition number as the machining condition number selected when the execution is interrupted. And a step of inserting the block into the next block of the completed block. The gist of the invention is that the temporary storage means for storing the temporary file is configured to enable further interrupt processing during interrupt processing.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a system configuration diagram showing an embodiment of an NC processing apparatus according to the present invention, and shows an example applied to a laser processing apparatus.
[0019]
In FIG. 1, an NC processing apparatus 1 includes a processing cell 3, an automatic warehouse 5 having a large number of shelves for accommodating pallets (not shown) on which materials are placed, and a control unit 7. I have.
The processing cell 3 includes an NC processing machine 51, a carry-in device 53 that carries the pallet into the NC processing machine 51, and a carry-out device 55 that carries the pallet out of the NC processing machine 51.
The automatic warehouse 5 includes a stacker crane 61 and a stacker crane traveling path 63 as attached devices. The stacker crane 61 takes out a pallet on which unprocessed material is placed from the shelf of the automatic warehouse 5 and sends it to the carry-in device 53. At the same time, the pallet on which the processed material is placed is received from the carry-out device 55 and stored in the shelf of the automatic warehouse 5.
[0020]
The control unit 7 includes a processing machine control interface 9, an automatic warehouse interface 11, a schedule operation control unit 13 that controls automatic operation according to a processing schedule, a processing program execution control unit 15, a processing schedule file 31, and a processing A program file 33 and a machining condition file 35 are provided.
[0021]
The machining program execution control unit 15 interrupts the interrupt determination unit 17 that determines whether or not there is an interrupt request during execution of the machining program. If there is an interrupt request, the machining program execution control unit 15 performs machining until the end of the machining feed command during execution of the machining program. After the execution, the execution interruption unit 19 that interrupts the execution of the machining program with the next rapid feed command and the end of the machining feed executed immediately before the interruption from the first machining feed command of the interrupted machining program are skipped. A program rewriting unit 21 that creates a temporary file in which the machining program is rewritten, a temporary file storage unit 29 that temporarily stores the temporary file, an interrupt execution unit 23 that executes the interrupt machining program, and after the interruption, A processing program that was interrupted by calling a temporary file from the temporary file storage unit 29 and executing it from the beginning. And a restarting operation portion 25 that resumes grams.
[0022]
The processing program execution control unit 15 controls the automatic warehouse 5 via the automatic warehouse control interface 11 according to the instruction from the schedule operation control unit 13, and the pallet on which the plate material is placed is transferred from the shelf of the automatic warehouse 5 to the carry-in device 53. While supplying, the pallet which mounted the processed board | plate material from the carrying-out apparatus 55 is taken out, and it stores in the shelf of the automatic warehouse 5. FIG.
[0023]
Further, the machining program execution control unit 15 calls the machining program instructed from the schedule operation control unit 13 from the machining program file 33 to the operation buffer 27. Then, the machining program is interpreted for each command, and NC machining is executed by controlling the machining machine 51 via the machining machine control interface 9.
[0024]
Next, the operation of the first embodiment of the present invention will be described with reference to the configuration diagram of FIG. 1 and the flowchart of FIG. The operation cycle of the NC processing apparatus 1 of the present embodiment includes a pallet cycle that is a processing cycle for each pallet and a program cycle that is a processing cycle for one or a plurality of processing programs called to process one pallet. And a command cycle for each machining command (G code) constituting each machining program.
[0025]
Although not shown in FIG. 2, a plurality of pallets on which materials are placed on the shelf of the automatic warehouse 5 are prepared before the start of the scheduled operation. Then, when the schedule operation is started, the schedule operation control unit 13 refers to the machining schedule file 31 and calls the first machining schedule, and the machining program so as to take out and machine the pallet designated by this machining schedule. The execution control unit 15 is instructed. The machining program execution control unit 15 instructs the automatic warehouse 5 to take out the pallet from the automatic warehouse 5 by the stacker crane 61 and deliver it to the carry-in device 53. The carry-in device 53 sets this pallet in the work table of the processing machine 51 (step S50).
[0026]
Next, the machining program specified in the machining schedule is called from the machining program file 33 to the operation buffer 27 (step S52). Next, one block command is taken out from the operation buffer 27 (step S54), and it is determined whether or not this command is an end command (step S56).
[0027]
If it is not an end command, it is determined whether or not it is a fast-forward command (step S58). If it is not a fast-forward command, the NC machine tool is made to execute a command for one block without determining whether or not there is an interrupt request (step S62), and the process returns to step S54 to fetch the next command (command cycle). .
[0028]
If it is a fast-forward command in the determination of step S58, it is next determined whether or not there is an interrupt request (step S60). If there is no interrupt request, the process proceeds to step S62, and the NC machine command is executed for one block. Returning to step S54, the next command is taken out (command cycle).
[0029]
If it is determined in step S56 that the command is an end command, it is then determined whether or not all the processing in the same pallet has been completed (step S64). Call the machining program to the operation buffer (program cycle).
[0030]
If all the processing in the same pallet has been completed, the processing-completed pallet is stored on the shelf of the automatic warehouse (step S66), and it is determined whether there is an unprocessed pallet (step S68). If there is an unprocessed pallet, the process returns to step S50 to take out a new pallet and set it on the work table of the processing machine (pallet cycle). If there is no unprocessed pallet, all the processing schedules are completed, so the schedule operation is ended.
[0031]
If it is determined in step S60 that there is an interrupt request, the process proceeds to S70, which is the first step of the interrupt process (INT).
This interrupt request can be input from a control panel (not shown) of the processing machine 51 or a remote control terminal connected to the control unit 7 via a communication line (not shown). The interrupt request includes information such as a program or program number to be interrupted and a shelf number of an interrupt processing pallet as interrupt accompanying information.
[0032]
In step S70, in preparation for resuming operation, the machining program rewriting unit 21 rewrites the machining program in the operation buffer 27 to create a temporary file. In this machining program rewriting, the machining program is rewritten so as to skip from the first machining feed command of the suspended machining program to the end of the machining feed executed immediately before the interruption.
[0033]
Next, the temporary file is stored in the temporary file storage unit 29 (step S72). The temporary file storage unit 29 has a push-down stack structure, and can realize further interrupt processing during interrupt processing, that is, interrupt nesting as described later.
[0034]
Next, the pallet whose processing is interrupted is returned to the shelf of the automatic warehouse 5 (step S74), and the pallet for interrupt processing is taken out from the shelf of the automatic warehouse 5 and set in the work table of the processing machine 51 (step S76). Then, a program for interrupt processing is called into the operation buffer 27 (step S78), and this interrupt processing program is executed (step S80).
[0035]
Next, the end of the interrupt processing program is determined (step S82), and if completed, the interrupt processing pallet is returned to the shelf of the automatic warehouse 5 (step S88), and the pallet interrupted by the interrupt is automatically stored again. To set the processing machine (step S90).
[0036]
Next, the temporary file is called from the temporary file storage unit 29 to the operation buffer 27 (step S92), and the process branches to step S54 to execute a command from the beginning. This temporary file has been rewritten so that the machining program interrupted by an interrupt is skipped from the first machining feed command to the end of the machining feed executed immediately before the interruption. The finished command is skipped and restarted from the next machining.
[0037]
If it is determined in step S82 that the interrupt machining program has not ended, it is next determined whether or not it is a fast feed command (step S84). If not, the next command of the interrupt machining program is executed. Control goes to step S80. If it is a fast-forward command, it is then determined whether there is a further interrupt request (step S86). If there is a further interrupt request, the process proceeds to the interrupt process (INT) during the interrupt process (branch to step S70. If the interrupt process during the interrupt process ends, the process proceeds to step S80. Return.
[0038]
If it is not necessary to perform the interrupt process during the interrupt process, if the interrupt processing program has not ended in the determination in step S82, the process may be changed to simply return to step S80.
[0039]
FIG. 3 is a flowchart for explaining the operation of the second embodiment of the present invention, which explains the specific operation and the rewriting of a specific processing program when the processing machine 51 of FIG. 1 is a laser processing machine. It is. FIG. 4A shows an example of a machining program before rewriting in the second embodiment, and FIG. 4B shows an example of a machining program after rewriting.
[0040]
In FIG. 3, first, a schedule operation is performed (step S10). The machining program executed in this schedule operation is assumed to be the program shown in FIG. Next, it is determined whether or not the scheduled operation is finished (step S12). If not completed, it is determined whether or not there is an interrupt request (step S14). If there is no interrupt request, the process returns to step S10 to continue the scheduled operation. If there is an interrupt request, it is then determined whether fast-forwarding is in progress (step S16). If rapid feed is not in progress, machining is continued until the cutting feed end command (M104) (step S18). If fast-forwarding is in progress, the processing machine is stopped (step S20).
[0041]
Now, assuming that an interrupt request is transmitted by cutting and feeding between S108 and S118 in FIG. 4A, machining is continued until a cutting and feeding end command (M104) at S118, and machining is performed with a rapid feed command G00 at S120. The machine stops.
[0042]
Next, the execution of the interrupt and the process of creating a temporary file by rewriting the machining program as the background process are executed in parallel.
[0043]
Interrupt execution is performed as follows. First, the interrupted pallet is taken out from the processing machine (step S22), the interrupt pallet is called into the processing machine (step S24), and interrupt processing is performed by executing the interrupt processing program (step S26). The end of processing is determined (step S28), and when the interrupt processing is completed, the interrupt pallet is taken out (step S30).
[0044]
The temporary file is created as follows. First, a unique sequence number n (n = 1 in FIG. 4 is “N1” in FIG. 4) is given to the block (S120) next to the cutting feed end command (M104, step S120 in FIG. 4) immediately before the interruption. Insert (step S32). Next, an unconditional branch command (GOTO1) to the block having the sequence number n is inserted after the command (M100, step S102 in FIG. 4) necessary for starting laser processing by this processing program (step S34). . Next, a condition number command (E__) designating the same processing condition as the processing condition number selected when the processing machine is stopped is inserted into the block next to the block in which the sequence number n is inserted (step S36). In the case of a laser processing machine, this processing condition number is the number of a processing condition file in which processing conditions such as processing speed, laser output, and assist gas supply specifications are registered in advance. To make it easier.
[0045]
Then, the machining program rewritten in this way is stored as a temporary file (step S38).
[0046]
When both the interrupt execution and the temporary file creation are completed, the temporary file is then called to resume operation (step S40), the machining interrupted pallet is called to the processing machine (step S42), and the machining program is started from the beginning of the temporary file. (Step S44). Since this temporary file has been rewritten in steps S32 to S36, the GOTO command jumps to the sequence number n (N1 G00X__Y__; S120 in FIG. 4B) to resume the interrupted processing. (Step S46), and return to the scheduled operation.
[0047]
FIG. 5 and FIG. 6 are diagrams for explaining other embodiments, and show an original program and a temporary file at the time of execution of interruption in another example of NC machining program in the NC laser machining machine.
[0048]
In the original program of FIG. 5, it is assumed that an interruption is notified during the drilling of φ20 under the machining condition E5 in the fourth line. When the drilling of φ20 is finished, the NC machine stops the schedule operation or the program operation and permits the interruption. Then, the original program shown in FIG. 5 is rewritten as a temporary file shown in FIG.
[0049]
In this example, the fourth line “GOTO1”, the twelfth line “N1”, and the thirteenth line “E5” of the program in FIG. 6 are automatically added to the original program.
[0050]
The additional position of the “GOTO1” command is immediately after the laser mode start command “M100” for starting laser processing. The additional position of the “N1” command is a position next to the tool radius correction cancel command “G00G40” accompanying the machining end command “M104” of the drilling continued until the end of machining. The additional position of the “E5” command is the position next to “N1” added previously.
[0051]
Then, when the temporary file in FIG. 6 is executed from the top after the end of the interrupt processing, the branching portion of φ20 that has already been processed is skipped by branching to “N1” by “GOTO1”, and “N1” The same processing condition as that set when the processing is interrupted by the next “E5” is set, and the subsequent processing can be performed.
[0052]
In addition, this invention is not limited to the example of embodiment mentioned above, By implementing an appropriate change, it can implement in another aspect. For example, in the embodiment, the schedule operation using an automatic warehouse and a stacker crane is used. However, the present invention is not limited to this. The invention can be applied.
[0053]
Moreover, although the embodiment applied to the laser processing apparatus has been described, the present invention can be applied to any plate processing apparatus such as a turret punch press and a bending machine in addition to the laser processing apparatus.
[0054]
【The invention's effect】
As described above, according to the present invention, the execution of the machining program is interrupted by the next fast-forward command without waiting for the completion of machining of the plate being machined when an interrupt request is generated. Rapid interrupt processing can be performed.
[0055]
Further, according to the present invention, the machining program rewriting unit is rewritten so as to skip from the first machining feed command in the machining program interrupted until the end of the machining feed executed immediately before the interruption. This eliminates the need for manual modification of the interrupted original program and eliminates the work of skilled workers related to interrupt processing.
[0056]
Further, according to the present invention, since the machining program is not rewritten manually, it is possible to return to the original program interrupted in a short time.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of an NC machining apparatus according to the present invention.
FIG. 2 is a flowchart for explaining an interrupt processing operation of the first embodiment of the NC machining apparatus according to the present invention.
FIG. 3 is a flowchart for explaining an interrupt processing operation of the second embodiment of the NC machining apparatus according to the present invention.
FIG. 4 is a program list for explaining automatic rewriting of a machining program in the second embodiment.
FIG. 5 is an original program list showing another example of a machining program.
FIG. 6 is a temporary file list for explaining automatic rewriting in another machining program example.
[Explanation of symbols]
1 NC processing equipment
3 Processing cell
5 Automatic warehouse
7 Control unit
9 Machine interface
11 Automatic warehouse interface
13 Schedule operation control unit
15 Machining program execution control unit
17 Interrupt judgment part
19 Execution interruption part
21 Machining program rewriting part
23 Interrupt execution part
25 Operation resumption part
27 Operation buffer
29 Temporary file storage
31 Machining schedule file
33 Machining program file
35 Machining condition file
51 Processing machine
53 Carry-in device
55 Unloading device
61 Stacker crane

Claims (8)

It is a laser processing device that processes materials taken from automatic warehouses according to the processing schedule,
Interrupt determination means for determining the presence or absence of an interrupt request during execution of the machining program instructed in the machining schedule;
When the interrupt determination means determines that there is an interrupt request, the execution of the non-interruptible command in the machining program is continued, the execution of the interruptable command is interrupted, and the machining program is executed. Execution interruption means to interrupt;
Machining program rewriting means for creating a temporary file in which the machining program is rewritten so as to skip from the first machining feed command in the machining program to the end of the machining feed executed immediately before the interruption;
Temporary storage means for storing the temporary file;
Interrupt execution means for executing an interrupt machining program;
An operation restarting means for resuming the machining program suspended by setting a specific machining condition by calling a temporary file from the temporary storage means and executing it from the top after the interruption is completed ,
In the temporary file, a sequence number unique in the machining program is inserted next to the cutting feed end command immediately before the interruption, and the same machining conditions as the machining condition number selected when the machine is stopped are designated. The condition number command is inserted after the sequence number is inserted, and this processing condition number is the number of the processing condition file in which the processing conditions of the processing speed, laser output, and assist gas supply specifications are registered in advance. A laser processing apparatus characterized by setting specific processing conditions .   The non-interruptible command includes a machining feed command and a command in a user macro and a command in a subprogram, and the interruptible command includes a fast-forward command that is not in a user macro and a subprogram. The laser processing apparatus according to claim 1.   3. The laser processing apparatus according to claim 1, wherein the temporary storage means for storing the temporary file is configured to enable further interrupt processing during interrupt processing. It is an interrupt processing method of a laser processing device that processes materials taken out of an automatic warehouse according to a processing schedule,
An interrupt determination step for determining the presence or absence of an interrupt request during execution of the machining program instructed in the machining schedule;
If it is determined in the interrupt determination step that there is an interrupt request, the execution of the non-interruptible command in the machining program is continued, the execution of the interruptable command is interrupted, and the machining program is executed. Execution interruption process for interrupting,
A machining program rewriting step for creating a temporary file in which the machining program is rewritten so as to skip from the first machining feed command in the machining program to the end of the machining feed executed immediately before the interruption,
A storage step of storing the temporary file in a temporary storage means;
An interrupt execution process for executing an interrupt machining program;
An operation restarting step of resuming the machining program that has been interrupted by setting a specific machining condition by calling the temporary file from the temporary storage means and executing it from the beginning after the interruption is completed , and
In the temporary file, a sequence number unique in the machining program is inserted next to the cutting feed end command immediately before the interruption, and the same machining conditions as the machining condition number selected when the machine is stopped are designated. The condition number command is inserted after the sequence number is inserted, and this processing condition number is the number of the processing condition file in which the processing conditions of the processing speed, laser output, and assist gas supply specifications are registered in advance. An interrupt processing method for a laser processing apparatus, wherein specific processing conditions are set .   The non-interruptible command includes a machining feed command, a command in a user macro, and a command in a subprogram, and the interruptible command includes a fast-forward command that is not in a user macro or a subprogram. An interrupt processing method for a laser processing apparatus according to claim 4. The machining program rewriting step includes a step of inserting a unique sequence number n in the machining program into the next block of the machining feed command executed at the end of the machining program
Inserting an unconditional branch command to a block having the sequence number n after a command required to start machining of the machining program;
Inserting a condition number command designating the same machining condition as the machining condition number selected when the execution is interrupted into a block next to the block in which the sequence number n is inserted, The interrupt processing method of the laser processing apparatus of Claim 4 or Claim 5 to do. The machining program rewriting step includes
Inserting a unique sequence number n within the machining program into the next block of the cutting feed command executed at the end of the machining program;
Inserting a GOTOn command after a command necessary to start machining of the machining program;
Inserting a condition number command designating the same machining condition as the machining condition number selected when the execution is interrupted into a block next to the block in which the sequence number n is inserted, The interrupt processing method of the laser processing apparatus of any one of Claim 4 thru | or 6.   The laser according to any one of claims 4 to 7, wherein the temporary storage means for storing the temporary file is configured to enable further interrupt processing during interrupt processing. Interrupting method for processing equipment.

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