JP5891021B2 - Laser processing method, automatic programming apparatus and processing system - Google Patents

Description

  The present invention relates to a laser processing method, an automatic programming device, and a processing for forming a joint that can smoothly cut a product from a worksheet using a cutting tool when the product is processed from the inside of the worksheet in a processing machine. It is about the system.

In general, in a processing machine such as a laser processing machine or a punch press, a work processing method for cutting a product from the inside of a worksheet is known, and in that case, a product formed by cutting inside the worksheet is used. A joint connecting the product and the worksheet is formed around the product so as not to leave the worksheet.
And after the product is carried out from a processing machine with a worksheet, a joint is cut | disconnected and cut off.
As a conventional workpiece processing method, when a product is cut from the inside of a worksheet by a laser processing machine, a laser is irradiated along the periphery of the product so as to leave a joint, and the joint is hit with a hammer or the like. It was cut by giving an impact and the product was cut off.

FIG. 12 is an explanatory diagram of a workpiece machining method when a product is cut from the inside of a worksheet by a conventional laser beam machine.
As shown in FIG. 12, when the product S is processed from the inside of the worksheet W, first, the piercing hole P1 is opened and then cut along the cutting region K1, and then the piercing hole P2 is opened. Cut along the cutting area K2 and further cut along the cutting area K3 after opening the piercing hole P3, and finally cutting along the cutting area K4 after opening the piercing hole P4 and not cutting. J1, J2, J3, and J4 are joints that connect the worksheet W and the product S. In addition, as shown in FIG. 12, the said cutting | disconnection area | region K1, K2, K3, K4 is along the outline of the product S. As shown in FIG.

JP 2001-334379 A JP 7-16667 A JP-A-9-99327

However, in the case of the workpiece machining method in which the product is cut from the inside of the worksheet by the conventional laser beam machine, the product is cut off by applying an impact by hitting the joint J with a hammer or the like. As a result, the product as a product may be damaged.
That is, if the thickness of the worksheet is thick (3 to 6 mm), the product is heavier than when the worksheet is thin, so that the joint J needs to have a predetermined strength. It becomes difficult to cut. Therefore, it is necessary to apply a larger impact to the product, and the possibility of damaging the product is increased.

In order to facilitate cutting, if the strength of the joint J is reduced, the number of joints must be increased in order to support the product. It took a lot of time and effort.
In addition, when the thickness of the worksheet is large, it is conceivable to cut the joint J with a cutting tool such as a nipper, but it is impossible to use because there is no gap for the cutting tool to enter the laser cutting portion.

  The present invention is for solving the above-mentioned problem, and the invention according to claim 1 is a laser processing method for cutting a product from a workpiece by laser processing, on both sides of a joint between the workpiece and the product. In this laser processing method, holes each having a width larger than that of the laser cutting groove are processed, and the holes are connected to perform laser processing of the contour of the product.

The invention according to claim 2 is the laser processing method according to claim 1, wherein the hole is processed by laser processing.
The invention according to claim 3 is the laser processing method according to claim 1, wherein the hole is processed by punch press processing.

The invention according to claim 4 is characterized in that the hole serves as a cutting jig insertion port for inserting a cutting jig for cutting the joint. The laser processing method described.
The invention according to claim 5 is characterized in that the workpiece is composed of a plate-like worksheet, and the hole is processed when the thickness of the worksheet is a predetermined value or more. 3. The laser processing method according to any one of 3, 4 and 4.

The invention according to claim 6 is an automatic programming device that generates a machining program for controlling a machining machine using the workpiece type and shape data and the product shape data stored in the storage means, and has a predetermined condition. When determining that the predetermined condition is satisfied by the determination means for determining whether or not the condition is satisfied, each of the holes having a larger width than the laser cutting groove is processed on both sides of the joint between the workpiece and the product. And a machining program creating means for creating the joint by connecting the holes and performing laser machining of the contour of the product.
According to a seventh aspect of the present invention, when the processing machine determines that the predetermined condition is satisfied by the determination unit according to the processing program, the width of the processing machine is wider than the laser cutting groove on both sides of the joint of the workpiece and the product. 7. The automatic programming device according to claim 6, wherein holes having large dimensions are respectively machined, and the holes are connected to perform laser machining of the contour of the product to create the joint.

The invention according to claim 8 is a processing system for processing a workpiece, a processing machine for processing the workpiece, a storage unit storing the type and shape data of the workpiece and the shape data of the product, An automatic programming device that creates a machining program for a processing machine using the workpiece shape data and the product shape data stored in the storage means, and whether or not the automatic programming device satisfies a predetermined condition. If the determination means and the determination means determine that the predetermined condition is satisfied, holes each having a width larger than the laser cutting groove are processed on both sides of the joint between the workpiece and the product, and the holes are formed. A machining program creating means for connecting and performing laser machining of the contour of the product to create the joint, and When the machine determines that the predetermined condition is satisfied by the determination unit according to the processing program, the machine processes holes each having a width larger than the laser cutting groove on both sides of the joint between the workpiece and the product. The machining system is characterized in that a hole is connected to perform laser machining of the contour of a product to create the joint.
In the invention according to claim 9, the machining system converts NC data based on a predetermined machining program from the automatic programming device into drive data between the automatic programming device and the processing machine, and sends the drive data to the processing machine. 9. The machining system according to claim 8, further comprising an NC device for feeding, wherein each part is controlled by the control device of the machine according to the drive data.

  According to the present invention, when a product is processed from the inside of a worksheet in a processing machine, a joint that can smoothly cut the product from the worksheet using a cutting tool is formed.

It is explanatory drawing which shows the outline of the laser processing system which implemented this invention. It is a schematic block diagram of the automatic programming apparatus shown in FIG. It is a flowchart which shows operation | movement of an automatic programming apparatus. It is explanatory drawing of the creation process of the joint in the workpiece | work processing method by the laser processing machine which implemented this invention. FIG. 5 is an enlarged explanatory view of each production process of the joint shown in FIG. 4. It is explanatory drawing of the modification of embodiment shown in FIG. It is explanatory drawing which shows the outline of the processing system which has the compound machine of the laser processing and punch press in other embodiment of this invention. It is a flowchart which shows operation | movement of the automatic programming apparatus in other embodiment. It is explanatory drawing of the creation process of the joint in the workpiece | work processing method by the multifunctional machine in other embodiment. FIG. 10 is an enlarged explanatory diagram of each joint creation step shown in FIG. 9. It is explanatory drawing of the modification of other embodiment shown in FIG. It is explanatory drawing of the workpiece processing method in the case of cutting a product from the inner side of a worksheet with the conventional laser beam machine.

FIG. 1 is an explanatory diagram showing an outline of a machining system embodying the present invention. In the present embodiment, a laser processing machine will be described as an example of the processing machine. However, as will be described later, other processing machines such as a combined machine of laser processing and a punch press can be used.
As shown in FIG. 1, the processing system 3 automatically creates a processing program for the laser processing machine 7 by using product shape data to be manufactured in a database (storage means) 5 and data on a workpiece (plate material). The NC device 11 has a programming device 9, and NC data based on the machining program created by the automatic programming device 9 is converted into drive data by the NC device 11 and sent to the laser processing machine 13, and the laser processing machine 13 according to the drive data. Thus, control of each part is performed, laser processing of a workpiece (plate material) is performed, and a predetermined product is manufactured. The database 5 stores product shape data obtained by processing, data of workpieces, and the like.

FIG. 2 is a block diagram showing a schematic configuration of the automatic programming device 9 shown in FIG.
As shown in FIG. 2, the automatic programming device 9 comprises a computer and has a CPU 15 to which a ROM 17 and a RAM 19 are connected. The CPU 15 further includes an input device 21 such as a keyboard and a display such as a display. A device 23 is connected. Further, the database 5 is connected to the CPU 15.
In the automatic programming device 9, the CPU 15 uses product shape data and workpiece data in the database 5 in accordance with an instruction from the input device 21 and uses a RAM 19 in accordance with a computer program from the ROM 17. A machining program for the laser beam machine 13 as described later is created.

Next, the processing operation and configuration of the laser processing machine 13 shown in FIG. 1 will be briefly described.
The laser processing machine 13 shown in FIG. 1 has a processing table 25 on which a worksheet (workpiece) W is placed, and X-axis guides 27A and 27B are provided on both sides of the processing table 25. A carriage 29 extending in the Y-axis direction is provided across the processing table 25 and the X-axis guides 27A and 27B. An X-axis ball screw 33 is screwed into one lower portion 31 of the carriage 29, the X-axis ball screw 33 is coupled to an X-axis motor Mx, and the lower portion 31 is slidably coupled to an X-axis guide 27A. The other lower portion 35 is slidably coupled to the X-axis guide 27B.

A ball screw 37 that is rotated by a Y-axis motor My is provided on the upper surface of the carriage 29, and a Y-axis slider 39 is screwed to the ball screw 37, and the Y-axis slider 39 is rotated by a Z-axis motor Mz. A machining head 43 that is screwed onto the rotating ball screw 41 is provided.
With this configuration, by driving the X-axis motor Mx, the carriage 29 is driven in the X-axis direction, and by driving the Y-axis motor My, the machining head 43 is moved on the carriage 29 in the Y-axis direction, and the Z-axis motor Mz. , The machining head 43 is moved in the Z-axis direction on the Y-axis slider 39, the machining head 43 is positioned at a predetermined cutting position, and the laser beam L is emitted from the machining head 43 according to a machining program described later. The workpiece W is cut while moving the processing head 43 in a predetermined direction while irradiating.

Next, the machining program creation operation of the automatic programming device 9 shown in FIGS. 1 and 2 will be described with reference to FIG.
FIG. 3 is a flowchart showing the operation of the automatic programming device 9.

First, in step 101 of FIG. 3, when the product S is processed from the inside of the worksheet W, predetermined processing is performed based on the type of processing machine and the material and shape data of the workpiece (worksheet W) from the database 5. It is determined whether the condition is satisfied.
Here, the predetermined condition is set according to the type of processing machine and the material and thickness of the worksheet W.
That is, to give an example of the predetermined condition, when the processing machine is a punch / laser combined processing machine with a joint cutting device and a product carry-out device, the material of the worksheet W is iron, The thickness is 0.6 mm or more, and it is determined whether or not this is satisfied.
Here, the CPU 15 functions as a determination unit that determines whether or not the predetermined condition is satisfied.

  If the predetermined condition is not satisfied in step 101, a machining program for creating the following ordinary joint J is created in step 103. That is, for example, as shown in FIG. 12, when the product S is processed from the inside of the worksheet W, first, the piercing hole P1 is opened and then cut along the cutting region K1, and then the piercing hole P2. And then cut along the cutting region K2, and then cut along the cutting region K3 after opening the piercing hole P3, and finally cut along the cutting region K4 after opening the piercing hole P4, A machining program is created that leaves uncut regions J1, J2, J3, and J4 as joints that connect worksheet W and product S. Here, the CPU 15 functions as a machining program creating means for creating a normal joint. In addition, as shown in FIG. 12, the said cutting | disconnection area | region K1, K2, K3, K4 is along the outline of the product S. FIG.

Next, when the predetermined condition is satisfied in step 101, in step 105, holes each having a width dimension larger than the laser cutting groove are processed on both sides of the joint J, and the holes are connected to define the contour of the product S. A machining program for creating a joint J by performing laser machining is created and the process is terminated. Here, the CPU 15 functions as a machining program creating means for creating a joint having a hole.
That is, a hole formed with a width dimension larger than the laser cutting groove on both sides of the joint J between the workpiece W and the product S is inserted as a cutting jig for inserting a cutting jig such as a nipper to cut the joint J. Mouth.
Next, a creation process for creating a joint having a hole based on the machining program created in step 105 will be described with reference to the embodiment shown in FIG.

FIG. 4 is an explanatory diagram of a process of creating joints J1 and J2 having holes in a workpiece machining method when a rectangular product is cut from the inside of a worksheet by the laser beam machine 13 embodying the present invention. 5 (a) and 5 (b) are enlarged explanatory views of respective production steps of the joints J1 and J2 shown in FIG.
Here, as shown in FIG. 4, the product S is cut from the worksheet W leaving the joints J1 and J2. First, the processing of the joint J1 formed on the straight portion of the product S indicated by the symbol A in FIG. 4 will be described. As shown in FIG. 5A, first, one end Ja of the joint J1 having a predetermined joint amount Jw. From the pierced hole P5, a laser beam is radiated to a predetermined position of the part of the work sheet W that becomes the hole H01 to form a pierced hole P5 so that a hole H01 having a predetermined width W1 and a predetermined height H1 is formed. The laser beam is irradiated from one end Ja of the joint J1 to a position PO1 having a predetermined width W1 to form an approach A1. Here, the position PO1 has a gap of a predetermined distance from the cutting region L4 along the contour of the product S. This gap serves as a joint that supports the workpiece W in the hole HO1.
Here, the position of the piercing hole P5 is about 1/3 of the predetermined width W1, and is about 1/2 of the predetermined height H1.

Subsequently, the laser beam is irradiated to the position PO2 along the cutting area L1 in a direction perpendicular to the end portion of the product S from the position PO1, and the cutting area L2 is cut in a direction perpendicular to the cutting area L1 from the position PO2. Is cut by irradiating a laser to the position PO3 along the line, and irradiating the laser to the one end Ja of the joint J1 along the cutting area L3 in the direction of a predetermined angle α with respect to the cutting area L2 from the position PO3. . And it cuts by irradiating a laser along the cutting | disconnection area | region L4 so that the outline of the product S may be followed from one end Ja of the joint J1. In FIG. 5A, there is a gap between the end of the product S and the cutting region L4, which takes into account a laser cutting groove formed by melting the workpiece W by laser irradiation.
Here, the angle of the cutting region L4 with respect to the cutting region L3 is 180 ° −α, and in this embodiment, α is about 140 ° and 180 ° −α is about 40 °.
By this cutting process, as shown in FIG. 5, a hole HO1 is formed on the left side of the joint J1.

Next, the formation of the hole HO2 on the right side of the joint J1 will be described. A laser is irradiated along the cutting region L11 along the outer shape of the product S, and the laser is irradiated to the other end Jb of the joint J1 for cutting. The laser beam is cut from the other end Jb of the joint J1 to the position PO4 along the cutting area L12 in the direction of an angle of 180 ° to α with respect to the cutting area L11. Then, the cutting process is performed by irradiating a laser to the position PO5 along the cutting area L13 in the direction of the predetermined angle α from the position PO4 to the cutting area L12, and the cutting area L14 in a direction perpendicular to the cutting area L2 from the position PO5. The laser beam is irradiated to the position PO6 along the line and cut.
Here, the position PO6 has a gap from the cutting region L11 by a predetermined distance. This gap serves as a joint that supports the workpiece W in the hole HO2.
Further, the laser beam is irradiated to the position about 1/3 of the predetermined width W1 from the position PO6 to about 1/2 of the predetermined height H1, and the relief R1 is formed by cutting.

Next, processing of the joint J2 formed at the corner portion of the product S indicated by the symbol B in FIG. 4 will be described. First, as shown in FIG. 5B, a predetermined width from one end Jc of the joint J2 at the corner portion. In order to form a hole having a predetermined height H2 at W2, a laser beam is irradiated to a predetermined position of the work sheet W at the portion to be the hole to form a pierced hole P6, and one end Jc of the joint J2 is formed from the pierced hole P6. To approach a position PO7 having a predetermined width W2 to form approach A2. Here, the position PO7 has a gap of a predetermined distance from the cutting area L11. This gap serves as a joint that supports the workpiece W in the hole HO3.
Here, the position of the piercing hole P6 is about 1/3 of the predetermined width W2, and is about 1/2 of the predetermined height H2.

Subsequently, the laser beam is irradiated from the position PO7 to the position PO8 along the cutting area L8 in a direction perpendicular to the end of the product S, and the cutting area L9 is cut in a direction perpendicular to the cutting area L8 from the position PO8. Is cut by irradiating a laser to the position PO9 along the cutting line, and cutting is performed by irradiating the laser to one end Jc of the joint J2 along the cutting area L10 in a direction perpendicular to the cutting area L9 from the position PO9. And it cuts by irradiating a laser along the cutting | disconnection area | region L11 so that the outline of the product S may be followed from the end Jc of the joint J2. In FIG. 5B, there is a gap between the end of the product S and the cutting region L11, which takes into account a laser cutting groove formed by melting the workpiece W by laser irradiation.
By this cutting process, as shown in FIG. 5, the hole HO3 is formed on the upper side of the joint J1.

Next, the formation of the hole HO4 on the left side of the joint J2 will be described. A laser is irradiated along the cutting region L4 along the contour of the product S, and the laser is irradiated to the other end Jd of the joint J2 for cutting. The laser beam is cut from the other end Jd of the joint J2 to the position PO10 along the cutting area L5 in a direction perpendicular to the cutting area L4. Then, the laser beam is irradiated to the position PO11 along the cutting area L6 in the direction perpendicular to the cutting area L5 from the position PO10, and cut along the cutting area L7 in the direction perpendicular to the cutting area L6 from the position PO11. Cutting is performed by irradiating a laser up to position PO12.
Here, the position PO12 has a gap from the cutting region L4 by a predetermined distance, and this gap serves as a joint that supports the workpiece W in the hole HO4.
Further, the laser beam is irradiated to the position of about 1/3 of the predetermined width W2 from the position PO12 to about 1/2 of the predetermined height H2, and the relief R2 is formed by cutting.

When the work sheet W cut and processed as described above is taken out from the laser processing machine 13, first, the work portions left in the holes HO1 and H02 on both sides of the joint J1 are removed, and the holes HO1 and H02 appear. Then, a cutting jig such as a nipper is inserted into the holes HO1 and H02 to cut the joint J1.
Here, both ends of the planned cutting line C1 of the joint J1 are positioned at both ends Ja and Jb of the joint J1, and the angle between the cutting region L3 and the cutting region L4 in the hole HO1 is 180 ° −α = about 40. Since the angle between the cutting region L11 and the cutting region L12 in the hole HO2 is 180 ° −α = about 40 °, the blade of the cutting jig naturally fits in both ends Ja and Jb of the joint J1. As a result, the cutting can be accurately performed along the planned cutting line C1.

Similarly, the work portions left in the holes HO3 and H04 on both sides of the joint J2 are removed to make the holes HO3 and H04 appear, and then a cutting jig such as a nipper is inserted into the holes HO3 and H04. Cut J2.
Here, both ends of the planned cutting line C2 of the joint J2 are positioned at both ends Jc and Jd of the joint J2, and the angle between the cutting region L10 and the cutting region L11 in the hole HO3 is about 90 °, and in the hole HO4. Although the angle between the cutting region L4 and the cutting region L5 is also about 90 °, the cutting portion of the joint J2 becomes a corner, so that the blade of the cutting jig naturally fits at both ends Jc and Jd of the joint J2. As a result, the cutting can be accurately performed along the planned cutting line C2.
Thus, according to this embodiment, when a product is processed from the inside of the worksheet in the laser processing machine, the product can be smoothly cut off from the worksheet using the cutting tool.
Further, the present invention is not limited to the above embodiment, and can be applied to various forms of laser processing. For example, as shown in FIG. 6, after laser processing along the cutting regions L4 and L11 so as to leave the joints J1 and J2, laser processing is performed along the cutting region L15 so as to leave the joints J3, and on the inside. The present invention can also be applied to a rectangular product having a hollow portion.
FIG. 6 is an explanatory diagram of a modified example of the embodiment shown in FIG.

Next, another embodiment in which the present invention is applied to a combined machine of laser processing and punch press will be described.
FIG. 7 is an explanatory diagram showing an outline of a processing system having a combined machine of laser processing and punch press implementing the present invention.
As shown in FIG. 7, this processing system 50 is an automatic programming that creates a processing program for the multi-function device 51 using the product shape data to be manufactured in the database (storage means) 5 and the data of the workpiece (plate material). The machine 9 has an NC data according to the machining program created by the automatic programming device 9 and is converted into drive data by the NC device 52 and sent to the multi-function device 51. Control is performed and a workpiece (plate material) is processed to produce a predetermined product. The database 5 stores product shape data obtained by processing, data of workpieces, and the like.

  The configuration of the automatic programming device 9 shown in FIG. 7 is the same as the schematic configuration shown in FIG. In the automatic programming device 9, the CPU 15 uses product shape data and workpiece data in the database 5 in accordance with an instruction from the input device 21 and uses a RAM 19 in accordance with a computer program from the ROM 17. A machining program for the multi-function device 51 as will be described later is created.

Next, the processing operation and configuration of the multi-function device 51 shown in FIG. 7 will be briefly described.
7 includes a frame 53, a table 55, a carriage base 57, a carriage 59, a plurality of clampers 61, a laser processing unit 63, a laser processing head 65, a laser oscillator 65a, and a turret. 67, a guide 69, and a product holding portion 71.

  The frame 53 is fixed to the floor and supports the laser processing unit 63, the laser processing head 65, the turret 67, and the like. The table 55 is configured to be movable and positionable with respect to the frame 53 in the Y-axis direction by driving means (servo motor or the like). The carriage base 57 is provided at one end of the table 55 so as to extend in the X-axis direction. The carriage 59 is provided on the carriage base 57 so as to be movable and positionable in the X-axis direction by a driving means (servo motor or the like). The carriage 59 is provided with a plurality of clamps 61 for gripping the workpiece W.

The laser processing unit 63 is provided so as to extend in the Y-axis direction of the frame 53. The laser processing head 65 is provided on the laser processing portion 63 so as to be movable and positionable in the Y-axis direction by a driving means (servo motor or the like). Further, the laser processing head 65 can be moved and positioned in the Z-axis direction, is supplied with a laser beam from a laser oscillation device 65a, and is supplied with an assist gas from an assist gas supply source (not shown).
Then, the workpiece W is moved to a position just below the laser processing head 65, and the laser beam is irradiated from the tip nozzle of the laser processing head 65 toward the processing position of the workpiece W together with the assist gas injection, thereby performing laser cutting processing. Done.

  The turret 67 is composed of upper and lower turrets, and an upper turret is supported so as to be freely indexable. Further, a lower turret is rotatably supported by the lower frame so as to face the upper turret. A ram cylinder is provided at a position corresponding to the processing position of the upper frame, and the ram is lowered to process the workpiece W by the cooperation of the punch die of the upper turret and the die die of the lower turret. Do. At this time, the workpiece W gripped by the clamp 61 is configured such that the machining position of the workpiece W can be positioned between the upper and lower molds by the movement of the carriage 59 in the X-axis direction and the movement of the table 55 in the Y-axis direction. Yes.

Next, the machining program creation operation of the automatic programming device 9 shown in FIGS. 7 and 2 in another embodiment will be described with reference to FIG.
FIG. 8 is a flowchart showing the operation of the automatic programming device 9 according to another embodiment.

First, in step 101 of FIG. 3, when the product S is processed from the inside of the worksheet W, predetermined processing is performed based on the type of processing machine and the material and shape data of the workpiece (worksheet W) from the database 5. It is determined whether the condition is satisfied.
Here, the predetermined condition is set according to the type of processing machine and the material and thickness of the worksheet W.
That is, to give an example of the predetermined condition, when the processing machine is a punch / laser combined processing machine with a joint cutting device and a product carry-out device, the material of the worksheet W is iron, The thickness is 0.6 mm or more, and it is determined whether or not this is satisfied.
Here, the CPU 15 functions as a determination unit that determines whether or not the predetermined condition is satisfied.

  If the predetermined condition is not satisfied in step 101, a machining program for creating the following ordinary joint J is created in step 103. That is, for example, as shown in FIG. 12, when the product S is processed from the inside of the worksheet W, first, the piercing hole P1 is opened and then cut along the cutting region K1, and then the piercing hole P2. And then cut along the cutting region K2, and then cut along the cutting region K3 after opening the piercing hole P3, and finally cut along the cutting region K4 after opening the piercing hole P4, A machining program is created that leaves uncut regions J1, J2, J3, and J4 as joints that connect worksheet W and product S. Here, the CPU 15 functions as a machining program creating means for creating a normal joint.

Next, if the predetermined condition is satisfied in step 101, holes having a width dimension larger than the laser cutting grooves on both sides of the joint J are respectively processed by a punch press using the turret 67 in step 107, and in step 109. Then, the machining program for creating the joint J by connecting the holes and performing the laser machining of the contour of the product S is created, and the process is terminated. Here, the CPU 15 functions as a machining program creating means for creating a joint having a hole.
That is, on both sides of the joint J between the workpiece W and the product S, a hole formed with a width larger than the laser cutting groove by a punch press with the turret 67 is inserted with a cutting jig such as a nipper to cut the joint J. It becomes a cutting jig insertion opening for doing.
Next, a creation process for creating a joint having a hole based on the machining program created in step 107 will be described with reference to the embodiment shown in FIG.

FIG. 9 is an explanatory diagram of a process of creating joints J4 and J5 having holes in a workpiece machining method when a rectangular product is cut from the inside of a worksheet by the multi-function device 51 according to another embodiment. FIGS. 10A and 10B are enlarged explanatory views of the respective production steps of the joints J4 and J5 shown in FIG.
Here, as shown in FIG. 9, the product S is cut from the worksheet W leaving the joints J4 and J5. First, the processing of the joint J4 formed on the straight portion of the product S indicated by the symbol C in FIG. 9 will be described. As shown in FIG. 10A, the punch press with the turret 67 has a predetermined joint amount Jw. A left hole H05 having a predetermined width W1 and a predetermined height H1 is formed from one end of the joint J4, and a right hole HO2 having a predetermined width W1 and a predetermined height H1 is formed from the other end of the joint J4.

Next, in step 109 of FIG. 8, the punch press by the turret 67 is switched to the laser processing by the laser processing head 65, and the laser processing head 65 is moved rapidly to a predetermined position in the hole H05 on the left side from the predetermined position. Then, the laser is irradiated to the end of the hole H05 along the cutting area L20 having the correction angle and the correction amount, and the laser is irradiated along the cutting area L21 along the contour of the product S from the end of the hole H05. And cut it.

  Next, the portion of the hole HO2 on the right side of the joint J1 is irradiated with a laser along the cutting region L24 to the end of the hole H06 along the contour of the product S, and the cutting region L25 having a correction angle and a correction amount therefrom. A laser is radiated along and cuts.

  Next, processing of the joint J5 formed at the corner portion of the product S indicated by the symbol D in FIG. 9 will be described. As shown in FIG. 10B, the laser processing head is moved to a predetermined position in the upper hole H07. 65 is moved by fast-forwarding, and is cut by irradiating a laser to the end of the hole H07 along the cutting region L23 having the correction angle and the correction amount from the predetermined position, and the end of the hole H07 is followed along the contour of the product S. Thus, cutting is performed by irradiating a laser along the cutting region L24.

  Next, the portion of the hole HO8 on the left side of the joint J5 is irradiated with a laser along the cutting region L21 to the end of the hole H08 along the contour of the product S, and the cutting region L22 having a correction angle and a correction amount therefrom. A laser is radiated along and cuts.

When the work sheet W cut and processed as described above is taken out from the multi-function device 51, a cutting jig such as a nipper is inserted into the holes HO5 and H06 to cut the joint J4 and nippers to the holes HO7 and H08. A cutting jig such as is inserted to cut the joint J5.
Thus, according to this other embodiment, when a product is processed from the inside of the worksheet in the multifunction machine, the product can be smoothly cut off from the worksheet using the cutting tool.
Further, the present invention is not limited to the other embodiments described above, and can be applied to various forms of laser processing. For example, as shown in FIG. 11, after laser processing along the cutting regions L21 and L24 so as to leave the joints J4 and J5, laser processing is performed along the cutting region L26 so as to leave the joint J6, and on the inside The present invention can also be applied to a rectangular product having a hollow portion.
The present invention is not limited to the embodiments of the invention described above, and can be implemented in other modes by making appropriate modifications.

DESCRIPTION OF SYMBOLS 3 ... Processing system 5 ... Database 7 ... Laser processing machine 9 ... Automatic programming apparatus 11 ... NC apparatus 13 ... Laser processing machine 15 ... CPU
17 ... ROM
19 ... RAM
DESCRIPTION OF SYMBOLS 21 ... Input device 23 ... Display device 25 ... Processing table 27A ... X-axis guide 27B ... X-axis guide 29 ... Carriage 31 ... Lower part 39 ... Axis slider 39 ... Y-axis slider 43 ... Processing head 50 ... Processing system 51 ... Multifunction machine 52 ... NC device 53 ... Frame 55 ... Table 57 ... Carriage base 59 ... Carriage 61 ... Clamper 63 ... Laser processing part 65 ... Laser processing head 65a ... Laser oscillator 67 ... Turret 69 ... Guide 71 ... Product holding part H01 to H08 ... Hole L ... Laser beams L1 to L24 ... Cutting areas P1 to P6 ... Pierce holes W ... Workpiece

Claims (7)

A laser processing method for cutting a product from a workpiece by laser processing,
When the thickness of the workpiece is 3 mm or more, or when the material of the workpiece is iron and the thickness of the workpiece is 0.6 mm or more,
A laser processing method, wherein holes having a width dimension larger than that of a laser cutting groove are respectively processed on both sides of a joint between the workpiece and the product, and the contour of the product is laser processed by connecting the holes.   The laser processing method according to claim 1, wherein the hole is processed by laser processing.   The laser processing method according to claim 1, wherein the hole is processed by punch press processing.   The laser processing method according to claim 1, wherein the hole serves as a cutting jig insertion port for inserting a cutting jig to cut the joint. An automatic programming device for generating a machining program for controlling a machining machine using the workpiece type and shape data and product shape data stored in a storage means,
Determining means for determining whether or not a predetermined condition is satisfied;
When the thickness of the workpiece determined to satisfy the predetermined condition by the determination means is 3 mm or more, or when the material of the workpiece is iron and the thickness of the workpiece is 0.6 mm or more, Creation of a machining program for machining the holes larger in width than the laser cutting grooves on both sides of the joint between the workpiece and the product and creating the joint by performing laser machining on the contour of the product by connecting the holes. And an automatic programming device. A machining system for machining a workpiece,
A processing machine for processing the workpiece;
Storage means for storing the workpiece type and shape data and product shape data;
An automatic programming device that creates a machining program for a machining machine using the shape data of the workpiece and the shape data of the product stored in the storage means,
The automatic programming device is
Determining means for determining whether or not a predetermined condition is satisfied;
When the thickness of the workpiece determined to satisfy the predetermined condition by the determination means is 3 mm or more, or when the material of the workpiece is iron and the thickness of the workpiece is 0.6 mm or more, Creation of a machining program for machining the holes larger in width than the laser cutting grooves on both sides of the joint between the workpiece and the product and creating the joint by performing laser machining on the contour of the product by connecting the holes. Means, and
The processing machine, according to the processing program, if it is determined by the determination means that the predetermined condition is satisfied, each of the holes having a width dimension larger than the laser cutting groove on both sides of the joint of the workpiece and the product, A machining system characterized by connecting the holes to perform laser machining of the contour of the product to create the joint. The machining system includes an NC device between the automatic programming device and the processing machine for converting NC data according to a predetermined machining program from the automatic programming device into drive data and sending the drive data to the processing machine. The processing system according to claim 6, wherein each part is controlled by the control device of the processing machine according to the drive data.

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