JP2818433B2 - Method for manufacturing a product having a three-dimensional bent shape and a plate material processing apparatus therefor - Google Patents

Description

Description: Object of the Invention (Field of Industrial Application) The present invention relates to a method of manufacturing a product having a three-dimensional bent shape and a plate processing apparatus for the product, and more particularly, to a bent shape. Is a three-dimensional product, a series of steps of removing the workpiece, removing a part of the workpiece at the bent part, bending the workpiece, and reinforcing the joint after bending. The present invention relates to a method performed by a processing head and a plate processing apparatus used in the method.

(Prior Art) Conventionally, for example, when processing a box-shaped product from a flat plate material, first, a development view of the product is flattened from the flat plate material by a cutting machine, and then the plate is cut by a bending machine. The bent portion of the work piece to be bent is bent. Next, welding was performed on the welding ridge or a welding ridge adjacent to the bending position, and finishing was performed with a sander.

(Problems to be Solved by the Invention) By the way, in the above-mentioned conventional processing steps, the cutting machine is, for example, a turret punch press or a laser cutting machine, the bending machine is, for example, a press brake, and the welding machine is, for example, an arc. Welders were needed and used.

In each of these steps, a work piece must be carried in and out of each machine, and a setup operation must be performed in each machine.

For this reason, there is a problem that there is waste in loading and unloading the workpiece, and a great deal of time and labor is required for the setup work.

[Constitution of the Invention] (Means for Solving the Problems) The present invention has been made in view of the conventional problems as described above, and the invention according to claim 1 relates to a product having a three-dimensional bent shape. In the manufacturing method, a step (a) of removing a work piece of a development view of a product having a three-dimensional bent shape by laser processing, and a work for reducing a bending force of a portion of the work piece to be bent. (B) a step of removing a part of the piece by laser processing, and detaching and replacing a nozzle mounted on the laser processing head having performed the laser processing with a work clamp device, and mounting the laser processing head on the laser processing head. (C) clamping the work piece by a work clamping device and bending the work piece along a bending line; And removably replaced into the adhesive filling apparatus, to reinforce the joint portion of the workpiece by laser welding or adhesive and the step (d), the bent shape consisting of the steps of a method for manufacturing a product which is solid.

The invention according to claim 2 is a method of cutting a workpiece in a development view of a product having a three-dimensional bent shape to reduce the bending force of a part of the workpiece to be bent. A laser processing head equipped with a nozzle that is detachably replaceable for removing a part by laser processing is provided, and a clamping device for clamping the work piece and bending along a bending line is provided on the laser processing head. This is a plate material processing apparatus that is provided so as to be detachable and replaceable with the mounted nozzle, and has a configuration in which the laser processing head is shared by the nozzle and the clamp device.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

Referring to FIG. 1, FIG. 2, and FIG. 3, a plurality of, for example, four columns 5 are erected on the floor 3 in the plate processing apparatus 1. A support plate 7 is placed on the column 5. A plurality of, for example, 2 extending in the X-axis direction (the left-right direction in FIG. 2) on both sides of the support plate 7
An X-axis guide 9 is attached.

A plurality of, for example, two support plates 11 are attached between the two X-axis guides 9 so as to extend in the Y-axis direction (vertical direction in FIG. 2), and support the X-axis guides 9. An X-axis carriage 13 that moves in the X-axis direction across the two X-axis guides 9 is mounted, and a Y-axis carriage 15 is mounted on the X-axis carriage 13.

The Y-axis carriage 15 is moved in the Y-axis direction along a guide 17 surface provided in parallel with the X-axis carriage 13. Y
A Z-axis column 19 is mounted substantially in the center of the axis carriage 15 in the Z-axis direction (vertical direction in FIG. 1), and the Z-axis column 19 is arranged along a guide mounted in the Y-axis carriage 15. It moves in the Z-axis direction. Z
A laser processing head 21 is mounted on the distal end side of the shaft column 19 as shown in FIG. 1 and FIG. In addition, a nozzle 23 is detachably attached to the tip of the laser processing head 21.

Four columns 5 standing on the floor 3
Is provided with a processing table 25 on which a workpiece W to be processed is placed.

As shown in FIGS. 1 and 2, a laser oscillator head 27 is provided on the right support plate 11, and the laser oscillator head 27 is connected to the laser oscillator main body via connecting pipes 29 and 31. 33, connected to a laser oscillator power supply 35. Also, beside the laser oscillation power supply 35, a control device
37 are located.

With the above configuration, when the laser oscillator power supply 35 is turned on,
A laser beam is oscillated from a laser oscillator main body 33 and passes through a connecting pipe 29 and a laser oscillator head 27 to form a laser processing head 21.
The workpiece irradiated from the nozzle 23 and placed on the processing table 25 is subjected to laser cutting or the like.

When performing laser cutting or the like on a workpiece, various movements of the workpiece can be performed by moving the X-axis carriage 13 in the X-axis direction, the Y-axis carriage 15 in the Y-axis direction, and the laser processing head 21 in the Z-axis direction. Cutting of various shapes is performed.

As shown in FIG. 4, an A-axis rotating body 39 is supported on the beam processing head 21 so as to be rotatable in the A-axis direction, and a motor base 41 is provided above the A-axis rotating body 39. Is provided. The motor base 41 is provided with an A-axis motor 43 such as a servo motor. An A-axis pinion 45 is attached to the output shaft of the A-axis motor 43,
An A-axis gear 47 is meshed with the A-axis pinion 45.

With the above configuration, when the A-axis motor 43 is driven, the A-axis pinion 45 is rotated. A-axis gear on A-axis pinion 45
Since the 47 is engaged, when the A-axis pinion 45 rotates, the A-axis rotating body 39 is rotated in the A-axis direction via the A-axis gear 47 as indicated by the arrow.

An A-axis fixed body 49 is provided in the A-axis rotating body 39, and a hollow cylindrical body 51 extending in the Z-axis direction is provided at the axis of the A-axis fixed body 49. A B-axis rotating body 53 is provided below the hollow cylindrical body 51.

A B-axis motor 55 such as a servomotor is provided at the lower right side of the A-axis rotating body 39 in FIG. 5, and a B-axis pinion 57 is attached to the output shaft of the B-axis motor 55. On the other hand, the B-axis rotating body 53 is provided with a B-axis gear 59. The B-axis gear 59 is engaged with the B-axis pinion 57. An A-axis bent mirror 61 is provided above the B-axis rotating body 53, as shown in FIG.

With the above configuration, when the B-axis motor 55 is driven, the B-axis pinion 57 is rotated. B-axis gear on B-axis pinion 57
When the B-axis pinion 57 rotates, the B-axis rotator 53 rotates in the B-axis direction via the B-axis gear 59 as indicated by the arrow in FIG.

As shown in FIGS. 4 and 5, the B-axis rotating body 53 is provided with a C-axis moving body 63, and a lower part of the C-axis moving body 63 via a nozzle holder 65. The nozzle 23 is mounted. The C-axis moving body 63 has a B-axis bent mirror
67 is built-in. Further, a condenser lens 69 is built in the nozzle holder 65.

Above the C-axis moving body 63, a C-like motor such as a servomotor is provided.
A shaft motor 71 is provided, and a C-axis pinion 73 is attached to an output shaft of the C-axis motor 71. On the other hand, a C-axis rack 75 extending in the Z-axis direction is provided above the B-axis rotating body 53, and the C-axis pinion 73 is engaged with the C-axis rack 75. The C-axis moving body 63 is provided with a C-axis linear guide 77 as shown in FIG.

With the above configuration, when the C-axis motor 71 is driven, the C-axis pinion 73 rotates. Since the C-axis rack 75 is engaged with the C-axis pinion 73, when the C-axis pinion 73 rotates, the C-axis moving body 63 is guided by the C-axis linear guide 77 via the C-axis rack 75 and the fourth It is moved in the C-axis direction as indicated by the arrow shown in the figure.

Below the nozzle holder 65, for example, a capacitance type gap sensor 79 is integrally mounted. Therefore, when the C-axis moving body 63 is moved in the C-axis direction, the gap sensor 79 is also moved in the axial direction.

A C-axis motor main body 81 is attached to the C-axis motor 71, and a C-axis potentiometer 83 is attached to the C-axis motor 71. 83 will be detected.

The laser processing head 21 is moved in the X-axis, Y-axis, Z-axis, A-axis, B-axis, and C-axis directions, and the workpiece W is irradiated with the laser beam LB to be folded from the flat workpiece W. Laser cutting is performed as a board removing means for removing a developed view of a product having a three-dimensional bending shape.
Further, slitting or grooving is performed on the bent portion (bending line) by removing means for removing a part of the workpiece W in order to reduce the bending force of the portion to be bent (bending line) of the workpiece. Or to make a perforated hole
Laser cutting is performed.

Further, without removing the nozzle 23 detachably mounted on the tip of the laser processing head 21, the work clamp device 85 shown in FIG. And laser processing head 21 to X
The workpiece W is bent along the bending lines by moving in the directions of the axis, the Y axis, the Z axis, the A axis, and the Z axis.

For example, as shown in FIG. 6, the work clamp device 85 includes a work clamp body 87 and a work clamp body.
A fixed clamp jaw 89 provided at the tip of 87 and a workpiece W clamped by an operation of, for example, an air cylinder 91 as an actuator with respect to the fixed clamp jaw 91,
It comprises a movable clamp jaw 93 to be unclamped, and a further detailed description is already known and will be omitted.

The nozzle 23 is removed, and an adhesive filling device 95 as a reinforcing means is mounted as shown in FIG. 7, and a slit processing portion or a bent portion after the adhesive is bent from the adhesive filling device 95. It can be supplied to and bonded to the joining ridge side adjacent to the position to reinforce, or it can be mounted with a nozzle 23 and reinforced by laser welding.

The adhesive filling device 95 is a cylinder for filling the adhesive.
97, a delivery nozzle 99 provided at the tip of the cylinder 97 for delivering an adhesive, and a pipe 101 for sending air to the cylinder 97. The filled adhesive is delivered from the delivery nozzle 99. Since a more detailed configuration is publicly known, the description is omitted.

The nozzle 23 detachably attached to the tip of the laser processing head 21 is provided with a work clamp device 85 and an adhesive filling device.
1 and 2, an automatic exchange device 103 and a storage rack 105 are provided on the left side.
Are arranged, and exchange is automatically performed at the exchange position 107.

Therefore, a product G having a three-dimensional shape as shown in FIG.
In the case of processing the workpiece W, the workpiece W is placed on the processing table 25 shown in FIGS. 1 and 2 via a fixing jig shown by a two-dot chain line in FIG. 9, for example. . The workpiece W is fixed by a plurality of, for example, magnet chucks M provided on a fixing jig. Magnet chuck M
Instead of using a suction device, the device may be fixed by an adsorption device.

Next, the laser processing head 21 as a plate removing means is set to X
By moving in the axis and Y-axis directions, the board cutting line CL in the developed view of the product G is machined by laser cutting based on a machining program created in advance. After the plate cutting process, as shown in FIG. 9, the laser processing head 21 as a removing means is moved in the X-axis direction or the Y-axis direction from the portion to be bent (bending line) to the slit. Perform processing.

In addition, this slit processing and the board removal processing may be performed in the reverse processing order, or may be performed simultaneously,
The point is that a processing program is created and executed so that the board removal processing and the slit processing are performed efficiently and in a short time. Further, at this time, the scraps generated from the workpiece W are dropped each time, for example, from the processing table 25, and there is no problem when the end of the workpiece W is clamped by the clamp device 85 at the time of bending in the next step. It goes without saying that this is done.

The ends where each of the above slits has been processed are reduced in bending force by leaving a small joint T between the ends of the workpiece W.

Next, the laser processing head 21 is moved in the X-axis and Y-axis directions, and is brought to the exchange position 107 shown in FIG. Then, the nozzle 23 and the nozzle 23 are automatically exchanged by the automatic exchange device 103.

When the work clamp device 85 is mounted on the tip of the laser processing head 21, the work clamp device 85 uses the work clamp device 85 to bend the bending line (i.e., the slit processing portion).
Is clamped, and the A-axis or B of the laser processing head 2 is clamped.
Bending is performed by rotating the shaft.
At this time, since the bending line is slit, the bending force can be bent with a very weak force as compared with the conventional bending force, and the bending can be easily performed.

When the bending process is completed at all of the bending lines, the laser processing head 21 is moved to the replacement position 107, and the nozzle as a reinforcing means stored in the storage rack 105 by the automatic replacement device 103 at the replacement position 107. The exchange of the work filling device 85 with the adhesive filling device 95 or 23 is automatically performed.

For example, when the nozzle 23 is mounted on the laser processing head 21, the laser beam from the nozzle 23 is applied to the slit portion from the bending position to the joining portion shown in FIG. Laser welding is performed by irradiating LB to reinforce. In the case where, for example, an adhesive filling device 959 is mounted on the laser processing head 21, the adhesive is attached to the slit portion from the bending position shown in FIG. It is reinforced by filling the adhesive from the filling device 95.

As described above, the plate material processing apparatus 1 has the laser processing head 21 as the plate removing means, the removing means, and the reinforcing means.
Is mounted, and a laser processing head is used as a bending means.
Since the work clamping device 85 is mounted on the 21 and the adhesive filling device 95 is mounted on the laser processing head 21 as a reinforcing means, a series of processes can be easily performed by one plate processing device 1 and wastefulness can be achieved. This eliminates the need for carrying-in / out operations, and further reduces the processing time during setup.

As another embodiment of the sheet material processing apparatus 1, another X-axis guide 109 extends in the X-axis direction outside the X-axis carriage 9 as shown by a two-dot chain line in FIGS. The X-axis carriage 111 is erected so that the X-axis carriage 111 can move in the X-axis direction.

The X-axis carriage 111 has a Y-axis movable in the Y-axis direction.
An axis carriage 113 is provided, and the Y-axis carriage 113 is provided with a processing head 115 movable in the Z-axis direction.

This processing head 115 is, as shown in FIG.
An A-axis rotating body 117 is rotatably supported on the A-axis fixed body 119. A motor base 121 is provided above the A-axis rotating body 117.
The motor base 121 is provided with an A-axis motor 123. An A-axis pinion 125 is mounted on the output shaft of the A-axis motor 123.
An A-axis gear 127 meshed with 25 is attached to the A-axis rotating body 117.

With the above configuration, when the A-axis motor 123 is driven, A
The A-axis rotating body 117 is rotated in the A-axis direction with respect to the A-axis fixed body 119 via the shaft pinion 125 and the A-axis gear 127.

A rotatable B-axis gear 129 is supported on the lower side wall of the A-axis rotator 117, and the B-axis gear 129 is provided with a B-axis rotator 131. Therefore, by rotating the B-axis gear 129 by a drive device (not shown), the B-axis rotator 131 is rotated in the B-axis direction with respect to the A-axis rotator 117. The specific structure for rotating the A-axis and B-axis rotating bodies 117 and 131 of the processing head 115 in the A-axis and B-axis directions is substantially the same as that shown in FIGS. 4 and 5 described above. Detailed description is omitted.

The lower part of the B-axis rotating body 131 is detachably attached to the suction device 1.
33 is installed.

Also, by removing the suction device 133, the work clamping device 85 shown in FIG. 6 and the adhesive filling device 95 shown in FIG.
Are automatically installed and replaced. Further, these exchanges are performed between the work clamping device 85 and the adhesive filling device 95 stored in the storage rack 105 by the automatic exchange device 103 at the exchange position 107 described above.

This plate material processing apparatus 1 is used when a plurality of three-dimensional products G shown in FIG. 8 are processed from a large-sized workpiece W first. That is, from the large-sized workpiece W, along the boarding line CL as shown in FIG.
The laser processing head 21 is moved in the X-axis and Y-axis directions, and plate cutting is performed by laser cutting. After performing the plate cutting process, the bending line ~
Is slit by laser cutting. In this case, a small junction T is left as described above. In addition, the order of the plate removing process and the slit process may be reversed or may be performed simultaneously.

Next, after performing the plate processing and the slit processing, the laser processing head 21 is caused to stand by at a standby position at the left end in the X-axis direction, and then the processing head 115 is moved to substantially the center of the workpiece W that has been subjected to the plate processing. Let me know. Next, the processing head 115 is lowered, and the workpiece W is suctioned and lifted by the suction device 133. The processing head 115 is moved to the processing position K in the processing table 125 on the right side as shown in FIG. 1 and then lowered to release the suction device 133 to place the workpiece W on the processing table 25.

The processing head 115 is raised and moved to the replacement position 107. At the exchange position 107, the automatic clamping device 103 is automatically exchanged with the workpiece clamping device 85 stored in the storage rack 105, and the workpiece clamping device 85 is mounted on the tip of the processing head 115.

The processing head 115 is moved to the processing position, and the bending process is performed at the bending line to in the same manner as described above. When the bending is completed, the processing head 115 is made to stand by at the right end in the X-axis direction in FIG. 1, and the laser processing head 21 is moved to the processing position. Laser processing head 21
The laser beam LB is irradiated from the nozzle 23 to the slit portion at the bending line to perform laser welding. Alternatively, the laser processing head 21 is made to stand by at the left end in the X-axis direction in FIG. 1, the processing head 115 is moved to the replacement position 107, and the work clamping device 85 is replaced with the adhesive filling device 95.

Then, the processing head 115 is moved to the processing position K, and the adhesive is filled from the bonding and filling device 95 into the slit portion at the bending line or the joining ridge portion adjacent to the bending position to be reinforced.

In this way, a series of steps from the large-sized workpiece W to the bending and finishing can be performed by a single plate processing apparatus 1 by performing a plurality of plate-cutting operations.
Useless loading and unloading operations are eliminated, and setup time and processing time can be reduced.

The present invention is not limited to the above-described embodiment, but can be embodied in other modes by making appropriate changes. For example, in the present embodiment, at the time of plate cutting, as shown in FIG. 9, the concave portion D ₁ and the convex portion D ₂ which are fitted to each other when bent into a part of the plate cutting line CL.
If it leaves brought forming a recess D ₁ and the convex portion D ₂ when folded
Are fitted to each other to further strengthen the bonding.

Further, although an example in which slit processing is performed on the bending line to the bending line is shown, other than slit processing, groove processing or perforated hole processing may be performed.

[Effects of the Invention] As can be understood from the above description of the embodiments, in short, the invention according to claim 1 is a method for manufacturing a product having a three-dimensional bent shape, wherein the bent shape is three-dimensional. (A) removing the workpiece of the developed view of the product by laser processing, and removing a part of the workpiece by laser processing in order to reduce the bending force of the part of the workpiece to be bent ( b) In the step, the nozzle mounted on the laser processing head that has performed the laser processing is detachably replaced with a work clamp device, and the workpiece is clamped and bent by the work clamp device mounted on the laser processing head. (C) performing bending along a line, and exchanging the work clamp device attached to the laser processing head with a nozzle or an adhesive filling device, (D) reinforcing the joint of the workpiece with laser welding or an adhesive.

The invention according to claim 2 is a method of cutting a workpiece in a development view of a product having a three-dimensional bent shape to reduce the bending force of a part of the workpiece to be bent. A laser processing head equipped with a nozzle that is detachably replaceable for removing a part by laser processing is provided, and a clamping device for clamping the work piece and bending along a bending line is provided on the laser processing head. The laser processing head is provided so as to be detachable and replaceable with the mounted nozzle, and the laser processing head is shared by the nozzle and the clamp device.

As is apparent from the above configuration, in the invention according to the first aspect, a part of the work piece to be cut and bent in a development view of a product having a three-dimensional bent shape is to be bent. Removal by laser processing,
After replacing the nozzle attached to the laser processing head that has performed this laser processing with a clamp device, and performing bending processing on the workpiece by this clamp device,
The clamp device is replaced by a nozzle or an adhesive filling device, and the joint of the workpieces is reinforced by laser welding or an adhesive.

That is, in the invention according to claim 1, a series of steps of removing a workpiece, removing a part of the workpiece at a bent portion, bending the workpiece, and reinforcing a joint after bending is performed by one unit. Since the laser processing head is used, the number of peripheral devices can be reduced, and it is suitable for various kinds of small-scale production of products having a three-dimensional bent shape.

In the invention according to the second aspect, a nozzle for performing laser processing on the workpiece and a clamp device for bending the workpiece are detachably provided on a common laser processing head. Since the laser processing head can be laser-processed and bent with a single laser processing head, the bent shape of the product is a three-dimensional product. A series of steps of bending the work piece and reinforcing the joint after bending can be performed by one laser processing head.

[Brief description of the drawings]

FIG. 1 is a front view of a plate processing apparatus according to an embodiment of the present invention, FIG. 2 is a plan view of FIG. 1, and FIG.
4 is an enlarged front view of the laser processing head, FIG. 5 is a view taken in the direction of the arrow IV in FIG. 4, and FIG. 6 is a work clamping device detachably attached to the tip of the laser processing head. FIG. 7 is a schematic view showing an example of an adhesive filling device detachably mounted on the tip of a laser processing head, and FIG. 8 is an example of a product having a three-dimensional bent shape. The perspective view shown, FIG. 9 is an explanatory view for performing plate removal in which a product having a three-dimensional bent shape is developed, and FIG. 10 is a schematic front view of a processing head different from a laser processing head. 1 ... plate processing equipment, 21 ... laser processing head 23 ... nozzle, 25 ... processing table 85 ... work clamping apparatus 95 ... adhesive filling equipment, 115 ... processing head

Claims (2)

(57) [Claims] 1. A method of manufacturing a product having a three-dimensional bent shape, comprising the steps of: (a) removing a workpiece of a developed view of a product having a three-dimensional bent shape by laser processing; (C) removing a part of the workpiece by laser processing to reduce the bending force of the part to be bent, (c) a nozzle and a work clamp device mounted on the laser processing head that has performed the laser processing. And detachable replacement
A step of clamping a work piece by the work clamping device mounted on the laser processing head and bending the work piece along a bending line; and (d) filling the work clamp device mounted on the laser processing head with a nozzle or an adhesive. A process for manufacturing a product having a three-dimensional bent shape, comprising the steps of: attaching and detaching and replacing the device, and reinforcing a joint portion of a workpiece by laser welding or an adhesive. 2. A part of a workpiece is laser-processed in order to reduce the bending force of a part to be bent of the workpiece in a development view of a product having a three-dimensional bent shape. A laser processing head provided with a nozzle detachably replaceable for removing the workpiece, and a clamp device for clamping the workpiece and bending the workpiece along a bending line, the nozzle mounted on the laser processing head. A plate material processing apparatus characterized in that the laser processing head is shared by the nozzle and the clamp device so that the laser processing head is shared by the nozzle and the clamp device.