JP2015223619A - Punch / laser combined processing machine, work processing method, and work processing program - Google Patents

Abstract

Provided is a punch / laser combined processing machine that is less likely to cause defective products even when a punching die is broken and can suppress a reduction in production efficiency.
A control unit (22) for controlling to selectively perform punching and laser processing is provided. The control unit (22) checks whether or not the die (KP) used for punching is damaged, and if it is confirmed that the die is damaged, controls to form the shape formed by punching by laser processing To do.
[Selection] Figure 9

Description

  The present invention relates to a combined punch / laser processing machine, a workpiece processing method, and a workpiece processing program.

A combined punch / laser processing machine capable of performing punching and laser processing on a workpiece with one processing machine is known, and Patent Document 1 describes an example of a workpiece processing method using the processing machine.
In Patent Document 1, in a punch / laser combined processing machine, a piercing part for laser processing is extracted from an input product figure to be processed, and whether or not punching of the part can be determined is determined. It is described that punching is specified when it is determined, and laser processing is specified when it is determined that punching is impossible.

Japanese Patent No. 2758025

  By the way, when the combined punch / laser processing machine is used for a long period of time, the die or punch, which is a die for punching, may be damaged. For example, in the case of a punch in which a broken mold forms a piercing at a site outside the product shape of the workpiece as a place where laser irradiation is started, the piercing is not formed in a regular shape, which may cause a laser processing failure. Further, when the damaged mold is a punch that forms a product shape, the product itself may be defective.

Conventionally, when a die for punching is damaged, there is a concern that many defective products are generated because the operator confirms the occurrence of the defect and stops the machining.
In view of this, a sensor for detecting the breakage of the mold is provided, and an alarm operation is performed in which machining is stopped immediately after the breakage is detected.
However, in continuous automatic operation, the operation stop time after the breakage detection becomes long, and the production efficiency may decrease.
For this reason, even if the punching die is broken, there is a demand for a device that is unlikely to cause defective products and that can suppress a reduction in production efficiency.

  Accordingly, the problem to be solved by the present invention is that a punch / laser combined processing machine, a work processing method, and a work that are less likely to cause defective products even when a punching die is damaged and that can suppress a decrease in production efficiency. It is to provide a machining program.

In order to solve the above problems, the present invention has the following configuration and procedure.
1) In a combined punch / laser processing machine having a control unit and selectively performing punching and laser processing under the control of the control unit,
The controller is
The punch / laser composite processing is characterized by controlling whether or not the die used for the punching is damaged, and when it is confirmed that the die is damaged, the shape formed by the punching is controlled by the laser processing. Machine.
2) In a workpiece machining method for machining a workpiece using a punch / laser combined machining machine that selectively performs punching and laser machining under the control of a control unit,
A mold breakage confirmation step for confirming the presence or absence of breakage of the mold used by the control unit for the punching,
When the control unit confirms that there is a breakage in the mold breakage confirmation step, an alternative machining step for forming the shape formed by the punching by the laser machining,
It is a workpiece processing method characterized by including.
3) Prior to the mold damage confirmation step, the control unit determines whether the mold is damaged by performing a mold damage presence / absence determination operation, and stores the determination result in a database. The workpiece machining method according to 2), including a presence / absence information acquisition step.
4) In the mold damage confirmation step, the control unit confirms whether or not the mold is broken by referring to the mold breakage presence / absence information stored in the database. It is a processing method.
5) The workpiece machining method according to any one of 2) to 4), wherein the control unit executes the substitute machining step in a laser machining mode in which the laser machining is performed.
6) In the control unit that controls the punch and laser combined processing machine that performs punching and laser processing,
A mold breakage confirmation step for confirming the presence or absence of breakage of the mold used for the punching;
If it is confirmed that there is a breakage in the mold breakage confirmation step, an alternative machining step in which the shape formed by the punching is formed by the laser machining, and
Is a workpiece machining program for executing

  According to the present invention, it is possible to obtain an effect that even if a punching die is broken, defective products are hardly generated and a reduction in production efficiency can be suppressed.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic plan view for explaining a combined processing machine 1 that is an example of a punch / laser combined processing machine according to an embodiment of the present invention. It is a block diagram for demonstrating NC apparatus 21 in the multi-tasking machine 1. FIG. 3 is a plan view for explaining an example of a shape processed by the multi-tasking machine 1. FIG. It is a figure for demonstrating the basic program PR which processes the example of a shape shown in FIG. It is a figure for demonstrating the processing program PR2 used when processing the shape example shown by FIG. 3 with the multi-tasking machine 1. FIG. It is a conceptual diagram for demonstrating the program structure in the case of processing into the several workpiece | work W using the process program PR2. It is a flowchart for demonstrating the execution procedure by macro program PR2M. It is a flowchart for demonstrating the procedure of the presence or absence of damage of the metal mold set in T command. It is a flowchart for demonstrating procedure ST which is a procedure example of the complex process using the process program PR2.

  A punch / laser composite processing machine and a workpiece processing method using the same according to an embodiment of the present invention will be described with reference to FIGS.

(Example)
First, a schematic configuration of a punch / laser combined processing machine 1 (hereinafter also simply referred to as a combined processing machine 1) according to an embodiment will be described with reference to FIG.
FIG. 1 is a schematic plan view of the multi-task machine 1. In the following description, the X direction and the Y direction are defined by directions indicated by arrows in FIG. The Z direction is the vertical direction and corresponds to the direction perpendicular to the paper surface.

  The multi-task machine 1 can selectively execute two processes, ie, a punching mode and a laser processing mode, and continuously execute punching and laser processing.

The composite processing machine 1 has the same configuration as a known punch / laser composite processing machine, and specifically includes a main body 1H, a laser oscillator 9a, and an NC device 21.
The main body 1H includes a gate-shaped frame 3 that protrudes upward (the central portion is broken in FIG. 1), a set of an upper turret 5U and a lower turret 5L that overlap in the Z direction, a laser processing head 9, and a carriage base. 11 and a work table 13.

A plurality of punches KP are mounted on the upper turret 5U.
A plurality of dies KD for punching a plate-like workpiece W in cooperation with each of the plurality of punches KP are mounted on the lower turret 5L.
The upper turret 5U and the lower turret 5L can be indexed so as to position a desired punch KP and die KD at the punching position TP1.

The frame 3 is provided with a laser processing head 9 for processing the workpiece W with a laser.
The laser processing head 9 is provided at a position offset in the X direction with respect to the punching position TP1.
At that position, the laser processing head 9 moves within a predetermined range in the Y direction and can be positioned at an arbitrary position within the range.
A laser is supplied to the laser processing head 9 from a laser oscillator 9 a disposed adjacent to the composite processing machine 1.

In FIG. 1, the work table 13 is connected to the frame 3 so as to extend in both the left and right directions. The work table 13 supports the work W so as to be movable in the X direction and the Y direction with a plurality of brushes and the like.
The carriage base 11 is a member extending in the X direction, and is disposed above the work table 13.
The carriage base 11 moves in the Y direction together with the work table 13 and can be positioned at an arbitrary position.
A carriage 15 is attached to the carriage base 11 so as to move in the X direction and be positioned at an arbitrary position.
The carriage 15 is provided with a plurality of work clamps 17 that grip one side edge (one side edge in the Y-axis direction) of the work W. The position of each work clamp 17 in the X-axis direction on the carriage 15 can be adjusted.

  Adjacent to the main body 1H, the above-described laser oscillator 9a, a product unloading device 19 for unloading the workpiece W or a product separated from the workpiece W by processing, and an NC device 21 are arranged.

The NC device 21 controls the operations of the laser oscillator 9a, the main body 1H, and the product carry-out device 19. The NC device 21 may be provided integrally with the main body 1H. In the example to be described, the NC device 21 is separated from the main body 1H, and communicates with the main body 1H by wire or wirelessly.

Next, the NC device 21 will be described in detail with reference to FIG. 2 (block diagram).
The NC device 21 includes a control unit 22 such as a CPU, an input unit 23 for an operator to input data and instructions, and an interface for receiving machining information J2 such as a machining program PR2 and machining data DT from the outside ( I / F) 24, a storage unit 25 that stores processing information J2 and the like, and an output unit 26 that outputs an image or sound to the outside.

On the multi-tasking machine 1 side, a sensor unit SS that detects the operating state of the operating member of the multi-tasking machine 1 is provided. The sensor unit SS outputs the operation state as sensor information J3. The sensor information J3 is supplied to the control unit 22.
Based on the input information J1 input from the input unit 23, the processing information J2 input via the interface 24, and the sensor information J3 supplied from the sensor unit SS, the control unit 22 drives the driving unit M and the laser oscillator 9a. , And the operation of the product carry-out device 19 is controlled.
In this description, a plurality of sensors and a plurality of drive sources (motors, cylinders, etc.) provided in the multi-task machine 1 are collectively referred to as a sensor unit SS and a drive unit M for convenience.
The control unit 22 causes the output unit 26 to output the operation state of the multi-tasking machine 1, work guidance to the worker, and the like from the output unit 26.

  The storage unit 25 stores a machining program PR2 and machining data DT. Further, a die management database DBa in which information on punching dies (punch KP and die KD) that can be used in the multi-function machine 1 is stored as a database is stored.

With the above-described configuration, the multi-tasking machine 1 selectively executes processing in the punching mode and the laser processing mode under the control of the control unit 22.
In the punch processing mode, the punch KP and die KD used for the next processing are indexed and positioned at the punch processing position TP1 from among the plurality of punches KP and die KD mounted on the upper turret 5U and the lower turret 5L.
Then, after the workpiece W is moved and predetermined positioning is performed with respect to the punching position TP1, the punch KP and the die KD are pressed against the workpiece W in cooperation to perform predetermined punching.
In the laser processing mode, the laser supplied from the laser oscillator 9a is irradiated onto the workpiece W from the laser processing head 9, and predetermined laser processing such as cutting is performed.

  In the multi-task machine 1, the control unit 22 can grasp, for example, one of the following two methods whether or not a good hole has been formed by punching.

One is a method in which an imaging device is provided in the main body 1H, and it is determined by image analysis whether or not a hole is opened from an image in the vicinity of a punch position after punching, which is imaged by the imaging device.
In this method, the control unit 22 determines that the punch KP is not damaged if the hole is opened, and determines that the punch KP is damaged if the hole is not opened.

As shown in FIG. 1, the laser processing head 9 is provided with a sensor 30 for detecting the reflected light of the laser irradiated on the workpiece W, and cutting is performed at the punch position after punch processing. This is a method of grasping whether or not a hole is opened based on the amount of reflected light detected by the sensor 30 by irradiating laser light with an output much lower than the laser light for the purpose. In this case, the sensor 30 is included in the sensor unit SS.
In this method, when the amount of reflected light is less than a predetermined threshold value, the control unit 22 determines that the punch KP is not damaged as a hole is punched, and when the reflected light amount is equal to or greater than the predetermined threshold value, It is determined that the punch KP is broken because it is not opened.

  Whether the die KD is damaged or not is determined based on image analysis as to whether or not the shape and dimensions of the opened holes conform to the standard.

The control unit 22 executes an operation for determining whether or not the punching die is damaged according to an instruction from the operator via the input unit 23 or a command on the machining program PR2. In the following description, this operation is also referred to as a mold assembly breakage presence / absence determination operation KHD.
Information on the presence / absence of damage acquired in the mold assembly breakage presence / absence determination operation KHD is stored in the mold management database DBa as mold breakage presence / absence information J4.
Specifically, when the control unit 22 executes the damage presence / absence determination operation KHD and determines that the die KD or the punch KP is damaged, the corresponding mold in the mold management database DBa stored in the storage unit 25 is determined. Rewrite the information on whether the mold is broken or not as damaged.

Next, the processing operation of the multi-task machine 1 will be described. Here, the operation | movement according to the presence or absence of the failure | damage of the metal mold | die for punch which is the characteristics of the multi-tasking machine 1 is demonstrated with reference to FIGS.
An example of the processing shape is shown in FIG. FIG. 3 is a plan view for explaining an example of a processing shape formed by selectively executing punching and laser processing on the workpiece W. FIG.
Each position is indicated by two-axis coordinates (X, Y) of an X axis and a Y axis that are orthogonal to each other. The unit of the coordinate numerical value is mm.

The shape to be machined on the workpiece W is as follows in detail.
(Shape 1) Round hole Ea: Centered on point P1 (20, 20).
(Shape 2) Round hole Eb: Centered on point P2 (480, 20).
(Shape 3) Round hole Ec: Centered on point P3 (480, 180).
(Shape 4) Round hole Ed: Centered on point P4 (20, 180).
(Shape 5) Square hole Fa: Centered on point P5 (100, 180).
(Shape 6) Square hole Fb: Centered at point P6 (200, 180).
(Shape 7) Square hole Fc: Centered at point P7 (100, 100).
(Shape 8) Outline (rectangular) Ga: Points P8 (0, 0), P9 (500, 0), P10 (500, 200), and P11 (0, 200) are the vertices.

FIG. 4 is an example of an NC program by G code for processing this shape.
Hereinafter, this program is referred to as a basic program PR for convenience.
The multi-task machine 1 performs multi-task machining by a machining program PR2 created based on the basic program PR. Here, the basic program PR and the machining program PR2 will be described in detail in this order.

The basic program PR is composed of a total of 18 lines, and roughly includes the following three command groups.
T1 machining command group PRa (2 to 5 lines): Punch machining is designated by designating a die group (a group of punch KP and die KD) specified by “T1”.
T2 processing command group PRb (6th and 7th rows): A punch set is instructed by designating a die set specified by “T2”.
Laser processing command group PRc (line 8 to line 17): Instructs laser processing.

The mold set T1 is a mold set that forms a round hole having a radius of 10.
In the T1 machining command group PRa, a die set T1 that forms a round hole with a predetermined diameter is specified in two rows, and punching (G90) with X20 and Y20 as the center positions is instructed.
In line 3, punching is instructed with X as X480. By this instruction, the round hole Eb is formed by punching with the mold set T1.
In the fourth row, punching is instructed with Y as Y180. By this instruction, the round hole Ec is formed by punching with the mold set T1.
In line 5, punching is instructed with X as X20. By this instruction, the round hole Ed is formed by punching with the mold set T1.

The mold set T2 is a mold set that forms a square hole having a long side length of 140 and a short side length of 60. In the T2 machining command group PRb, the die set T2 that forms the square hole is designated in line 6 (T command), and punching about X100 and Y180 is instructed.
In line 7, punching is instructed with X as X200. By this instruction, the square hole Fb is formed by punching with the mold set T2.

In the subsequent 8th and 9th laser processing command groups PRc, switching to the laser processing mode is instructed in 8th line (M100).
In the ninth line, cutting of a square hole having a single width 70 (full width 140) in the X direction and a single width 30 (full width 60) in the Y direction is instructed centering on the position of X100, Y100 (G111). By this instruction, the square hole Fa is formed by laser processing.
In line 10, the machining position is moved to the position of X0, Y0 (point P8), and piercing is instructed in line 11 (M103).
In line 12, a feed instruction is given, and the line moves to the position of X500 (point P9), line 13 moves to position Y200 (point 10), line 14 moves to position X0 (point P11), line 15 To move to the Y0 position (point P8). Thereby, the external shape Ga is cut and formed by laser processing.
In 16th line, the laser machining head 9 is instructed to rise, and in 17th line, the laser machining mode is released.

FIG. 5 shows a workpiece machining program PR2 (hereinafter simply referred to as a machining program PR2) created based on the basic program PR described above and further taking into account the breakage of the punching die.
The multi-tasking machine 1 executes punching and laser processing in a composite manner based on this processing program PR2.

In the machining program PR2, lines 1 to 7 of the T1 machining command group PRa and the T2 machining command group PRb are the same as the basic program PR.
The machining program PR2 is divided into two laser machining command groups PRc1 and PRc2 after the laser machining command group PRc is switched from the punching mode to the laser machining mode by an 8-line command. A command group is inserted.

That is, one of the two machining command groups inserted has a shape that is instructed to be formed by punching with the mold set T1 in the T1 machining command group PRa, and the mold set T1 is damaged. This is a T1 substitute processing command group PRd formed by laser processing.
The other is T2 for forming the shape instructed to be formed by punching by the mold set T2 in the T2 processing command group PRb when the mold set T2 is damaged by laser processing. This is a substitute processing command group Pre.

In the machining program PR2, the control unit 22 checks whether or not the designated mold set is damaged by a command (hereinafter also referred to as a T command) that designates the mold set shown in the second and sixth lines. ing.
The 11th to 14th lines, which are the T1 substitute machining command group PRd, are executed when it is confirmed that there is damage in the mold set T1 according to the T command of 2 lines.
The 17th and 18th lines, which are the T2 substitute machining command group Pre, are executed when it is confirmed that there is damage in the mold set T2 according to the 6th T command.

explain in detail. Based on the T command, the control unit 22 confirms whether or not the specified die set is damaged by checking whether or not the die breakage information J4 stored in the die breakage column in the die management database DBa (breakage present, no breakage). Based on.
More specifically, when it is confirmed that the mold set T1 is damaged as a result of checking whether the mold set T1 is damaged due to the T command of two lines, the punching operation is performed with the press lock signal turned ON. It locks not to be executed, passes 3 to 5 lines, and shifts to the T2 machining command group after the 6th line.

  In the T2 machining command group, if it is confirmed that the mold set T2 is damaged as a result of checking whether or not the mold set T2 has been damaged in accordance with the 6-line T command, the punching operation is performed with the press lock signal turned ON. It locks not to execute, passes 7 lines, and shifts to the laser processing mode after 8 lines.

On the other hand, if it is confirmed that the die set T1 is not damaged as a result of checking whether or not the die set T1 is damaged by the T command of two lines, the press lock signal for locking the punching operation is kept OFF, A punching process designated by two lines is executed to form a round hole Ea. Next, the third and subsequent lines are executed.
Further, as a result of confirming whether or not the mold set T2 is damaged by the T command of 6 lines, if it is confirmed that the mold set T2 is not damaged, the press lock signal for locking the punching operation is kept OFF, Punching specified in the 6th line is executed to form a square hole Fa centering on P5. Next, the seventh and subsequent lines are executed.

In the T1 substitution processing command group PRd (11th to 14th rows), the command code G112 is a command code for forming a round hole by laser processing.
That is, it is confirmed that the mold set T1 is damaged, and a round hole Ea having a radius of 10 centering on the point P1 is formed by laser processing in accordance with an instruction of 11 lines which is reached without processing in the mold set T1. .
Next, a round hole Eb having a radius of 10 centered on the point P2 is formed by laser processing in accordance with a command of 12 rows.
Next, a round hole Ec having a radius of 10 with the point P3 as the center is formed by laser processing according to a command of 13 rows.
Next, a round hole Ed having a radius of 10 with the point P4 as the center is formed by laser processing according to the command of 14 rows.
Thereafter, the 16th and subsequent lines are executed.

In the T2 substitution processing command group PRe (lines 17 and 18), the command code G112 is a command code for forming a square hole by laser processing.
That is, according to the command of 17 lines, a square hole Fa having a single width 40 (full width 80) in the X direction and a single width 10 (full width 20) in the Y direction is formed by laser processing around the point P5.
According to the 18-line command, a square hole Fb having a single width 40 (full width 80) in the X direction and a single width 10 (full width 20) in the Y direction is formed by laser processing around the point P6.
Thereafter, the 19th and subsequent lines are executed.

  According to this processing program PR2, punching with a damaged mold set is not executed, and the shape formed by the punching can be formed by laser processing.

The die set breakage presence / absence judgment operation KHD may be executed after machining one workpiece W.
In the machining program PR2 shown in FIG. 5, the die set breakage presence / absence determining operation KHD is preferably executed as the macro program PR2M in accordance with the G50 command of 28 lines.
In addition, when a plurality of products are obtained by processing each of the plurality of workpieces W with the processing program PR2, the mold assembly breakage determination operation KHD is performed as a macro program after trial processing or after processing the first product. It may be executed as PR2M.

FIG. 6 is a conceptual diagram for explaining a program configuration when machining a plurality of workpieces W using the machining program PR2, and shows an example in which the macro program PR2M is executed after machining the first product. .
Here, the machining program PR2 that does not execute the macro program PR2M with the G50 command of 28 lines is distinguished as the machining program PR2a.
In the example shown in FIG. 6, the presence / absence of breakage of the die set in the second and subsequent product processing is confirmed based on the die management database DBa reflecting the execution result of the macro program PR2M.

  FIG. 7 is a flowchart for explaining the execution procedure of the macro program PR2M in the machining program PR2. FIG. 8 is a flowchart showing an example of a procedure for confirming whether or not the mold set is damaged based on the T command in the machining program PR2a for the second and subsequent sheets.

As shown in FIG. 7, in the macro program PR2M, a die set breakage presence / absence determination operation KHD is executed in response to the G50 command (Step B1), and the presence or absence of breakage is determined (Step B2).
If there is no damage, the process returns to the normal G50 process (Step B3).
If there is breakage, the breakage presence / absence column of the corresponding mold in the mold management database DBa is updated to be broken (Step B4), and then the process proceeds to (Step B3).

As shown in FIG. 8, in the presence / absence check of the die set based on the T command, the presence / absence of the die set specified by the T command is checked (Step C1).
If there is no breakage, it is determined whether the press lock signal is OFF / ON (Step C2), if it is OF, it is maintained as it is, and if it is ON, it is turned OFF (Step C3).
If there is breakage, whether the press lock signal is ON / OFF is determined (Step C4). If it is ON, it is maintained as it is, and if it is OFF, it is turned ON (Step C5).

  An example of a procedure that generalizes the machining operation executed by the above-described machining program PR2 in the multi-task machine 1 is shown in the flowchart of FIG. Hereinafter, this procedure example is referred to as a procedure ST. In addition, punching and laser processing that are performed when there is no damage to the mold set are referred to as prescribed punching and prescribed laser processing in order to distinguish them from alternative machining.

The procedure ST is as follows.
(Step A1): The control unit 22 performs a die assembly breakage presence / absence determination operation KHD.
(Step A2): The control unit 22 reflects the determination result obtained in (Step A1) in the mold management database DBa.
(Step A3): The control unit 22 refers to the mold management database DBa to check whether or not the mold set used for punching in the machining operation is damaged.
(Step A4): When it is confirmed that there is no breakage in (Step A3), the control unit 22 performs prescribed punching.
(Step A5): After executing (Step A4), the control unit 22 performs the prescribed laser processing.
(Step A6): When it is confirmed that there is damage in (Step A3), the control unit 22 performs the replacement laser processing based on the replacement processing command group preliminarily included in the processing program PR2. As a result, the shape originally formed by punching is formed by alternative processing using a laser.
This substitute machining command group corresponds to the T1 substitute machining command group PRd and the T2 substitute machining command group Pre in the machining program PR2.
(Step A7)
After executing (Step A6), the control unit 22 performs the prescribed laser processing.

As described above, the machining program PR2 is configured to include an alternative machining command group that forms the shape formed by punching when the die set is not damaged by laser machining.
Based on this processing program PR2, the control unit 22 confirms information on the presence or absence of breakage of the punching die set obtained in advance during punching. And when it confirms that it is damaged, it instruct | indicates to perform the alternative process by a laser without performing the punch process with respect to the multi-function machine 1. FIG.

Thereby, even if the die set for punching is damaged, punching using the die set is not executed, so that many defective products do not occur.
In addition, even when continuous operation is performed automatically, after detecting the breakage of the die set for punching, it is possible to manufacture a product by executing substitution processing with a laser. As a result, the machining operation does not stop, and a reduction in production efficiency can be suppressed.

That is, the composite machine 1 executes composite machining based on the machining program PR2, so that even if a punching die is damaged, defective products are less likely to be produced, and a reduction in production efficiency can be suppressed.
Further, if combined machining is performed by the workpiece machining method based on the machining program PR2 using the complex machine 1, even if the punching die is damaged, it is difficult to produce defective products, and reduction in production efficiency can be suppressed. .
Further, if combined processing is executed by the combined processing machine 1 using the processing program PR2, even if a punching die is damaged, defective products are unlikely to be generated, and reduction in production efficiency can be suppressed.

  The embodiment of the present invention is not limited to the above-described configuration and procedure, and may be modified within the scope not departing from the gist of the present invention.

In the above-described machining program PR2 and procedure ST, the substitute machining by the laser is executed in the laser machining mode in which the prescribed laser machining is performed. From the viewpoint of improving the efficiency, it is desirable to execute the substitute processing in the laser processing mode in which the prescribed laser processing is performed as described above, but the present invention is not limited to this.
For example, in the punching mode, the alternative processing may be executed by switching to the laser processing mode for the alternative processing.

  The mold damage presence / absence determination operation KHD is not limited to the above-described two methods (a method using image analysis and a method using the amount of reflected light). .

  Since damage to the punch KP is often due to breakage, the punch KP is more likely to break than the die KD. Therefore, the above-described confirmation of whether or not the die set is damaged may be limited to only whether or not the punch KP is damaged.

  The machining program PR2 is generated not only by an automatic programming device, for example, and input to the control unit 22 and also stored in the storage unit 25 for execution, but only the basic program PR is created by an automatic programming device, The basic program PR is stored in the storage unit 25, and based on the stored basic program PR, the control device 22 creates a machining program portion for performing alternative machining with a laser, thereby obtaining the machining program PR2. May be.

  In addition, when the die set breakage presence / absence judgment operation KHD is executed during execution of the basic program PR, and it is judged that there is breakage, as a procedure, punching performed with a breakage die scheduled to be performed after the judgment The control unit 22 may create an alternative laser processing program for execution by laser.

DESCRIPTION OF SYMBOLS 1 Combined processing machine (Punch / laser combined processing machine), 1H Main part 3 Frame 5U Upper turret, 5L Lower turret 9 Laser processing head, 9a Laser oscillator 11 Carriage base 13 Work table 15 Carriage 17 Work clamp 19 Product unloading device 21 NC Device 22 Control unit 23 Input unit 24 Interface (I / F)
25 storage unit 26 output unit 30 sensor DBa mold management database DT machining data Ea to Ed round hole, Fa to Fc square hole, Ga outline (rectangle)
J1 input information, J2 machining information, J3 sensor information J4 die breakage presence / absence information KD die, KHD die set breakage presence / absence judgment operation, KP punch M drive unit PR basic program, PR2 machining program PR2M macro program PRa T1 machining command group, PRb T2 machining command group PRc Laser machining command group, PRd T1 substitution machining command group PRe T2 substitution machining command group P1 to P11 Point SS sensor section, ST procedure T1, T2 mold assembly, TP1 punch machining position W Workpiece

Claims (6)

In a punch / laser combined processing machine that has a control unit and selectively performs punching and laser processing under the control of the control unit,
The controller is
The punch / laser composite processing is characterized by controlling whether or not the die used for the punching is damaged, and when it is confirmed that the die is damaged, the shape formed by the punching is controlled by the laser processing. Machine. In a workpiece machining method of machining a workpiece using a punch / laser combined machining machine that selectively performs punching and laser machining under the control of a control unit,
A mold breakage confirmation step for confirming the presence or absence of breakage of the mold used by the control unit for the punching,
When the control unit confirms that there is a breakage in the mold breakage confirmation step, an alternative machining step for forming the shape formed by the punching by the laser machining,
A workpiece machining method comprising:   Prior to the mold breakage confirmation step, the control unit determines whether or not the mold is broken by performing a mold breakage presence / absence judgment operation and stores the judgment result in a database. The workpiece machining method according to claim 2, further comprising an acquisition step.   4. The workpiece machining method according to claim 3, wherein in the mold breakage confirmation step, the control unit confirms whether or not the mold is broken by referring to mold breakage presence / absence information stored in the database. .   5. The workpiece machining method according to claim 2, wherein the control unit executes the substitute machining step in a laser machining mode in which the laser machining is performed. In the control unit that controls the punch and laser combined processing machine that performs punching and laser processing,
A mold breakage confirmation step for confirming the presence or absence of breakage of the mold used for the punching;
If it is confirmed that there is a breakage in the mold breakage confirmation step, an alternative machining step in which the shape formed by the punching is formed by the laser machining, and
Work machining program for executing

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