JP2768417B2 - Work cutting method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting method capable of cutting a material into a complicated shape using a plurality of cutting machines such as a laser beam machine.

[0002]

2. Description of the Related Art Conventionally, as a cutting device for simultaneously processing using a plurality of cutting machines, for example, Japanese Patent Application Laid-Open No. 63-1 (1988)
An apparatus such as No. 92561 is known. In this device, a movable gate-shaped gantry is provided on the top of a plate-shaped material, and a plurality of cutting tools are provided on a movable head along a beam of the gantry. The workpieces of the same shape are simultaneously cut from the flat plate-like material while moving in the direction.
Further, as a similar apparatus, an apparatus as disclosed in JP-A-60-37286 is also known. This apparatus includes a work table movable in one axis direction, a laser table movable in a direction perpendicular to the work table, and a plurality of laser oscillators supported by the laser table. Are moved to process a plurality of workpieces at the same time.

[0003]

However, any of the above-mentioned devices is suitable as a device for simultaneously processing a plurality of works having the same shape, but it is possible to simultaneously process a complicated shape such as a panel part of an automobile. A problem arises when trying to process. That is, in the former device, when trying to cut a complicated shape, adjacent auxiliary heads interfere with each other and cannot cut into a desired shape, and in the latter device, when trying to cut a complicated shape, the work table moves forward,
It must be moved in a complicated manner, such as by retreating, and there is a problem that, for example, the distribution efficiency is inferior and the productivity is low as compared with a method in which the plate material is continuously fed at a constant speed.

[0004]

[Means for Solving the Problems] To solve such problems.
The present invention provides a transport method for continuously transporting a plate material in a certain direction.
With respect to the conveying means and the conveying direction of the work made of the plate material
Is disposed at a distance, is disposed above the transfer device, and
Freely movable in the direction perpendicular to the transfer direction of the work
A first cutting machine arranged downstream and a second cutting machine arranged upstream of the first cutting machine.
And a third cutting machine.
Transported from upstream to downstream by the transport device,
Movement control of the cutting machine in the direction perpendicular to the workpiece transfer direction
Cutting the downstream portion of the work into a predetermined shape.
And the progress of the subsequent work transfer, the above-mentioned first cutting machine
A second cutting machine arranged on the flow side, and upstream of the second cutting machine
The third cutting machine located on the side is orthogonal to the workpiece transfer direction.
In the direction in which the workpiece is conveyed.
And the step of cooperatively cutting with
This is the method of cutting the workpiece.

[0005]

[Function] If the material is processed continuously in a certain direction and the cutting machine is controlled to move only in the direction orthogonal to the processing feed,
Although the distribution efficiency is increased and the productivity is improved, and the apparatus can be simplified, on the other hand, the cutting process by the cutter is limited to only the direction from the upstream side to the downstream side in the feed direction. Therefore, when the shape line of the work is turned back in the feed direction, it is not possible to cut continuously with one cutting machine. Can be cut. At this time, the plurality of cutting machines are arranged at predetermined intervals along the workpiece feeding direction, and their moving directions are orthogonal to the workpiece feeding direction, so that they do not interfere with each other. Then, each cutting machine is NC-controlled to process a complicated shape line.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a method for cutting a workpiece according to the present invention will be described with reference to the accompanying drawings. 1 is an example of a system configuration of a cutting device according to the cutting method of the present invention, FIG. 2 is an explanatory diagram for explaining synchronization of processing speed, FIG. 3 is an explanatory diagram of cutting lines of each cutting machine, and FIG. FIG. 5 is a process chart.

A cutting device according to the method of cutting a work according to the present invention is configured as a device for cutting a panel part of an automobile into a desired shape. This device is wound around a coiler 1 as shown in FIG. a coil member 2 or conveying means 4 for conveying the plate material W in advance blank 3 or the like which is blank layout into a predetermined size at a predetermined speed in a predetermined direction is provided above the conveying means 4, the plate In the direction of material transport
Apart from disposed a plurality of cutting machine A, B, C, D, immediately
That is, it is located on the most downstream side in the transport direction and on the upstream side
First cutting machines A and B and upstream of the first cutting machines A and B
A second cutting machine located there, and a second cutting machine located upstream thereof
3 is provided with cutting machines C and D, control means 5 for controlling these cutting machines A to D, and a CAD / CAM system 6 for converting the external shape of the work into NC data.

The transport means 4 includes, for example, a plurality of magnet rollers 7 disposed along a transport path so that the plate-shaped material W can be transported by suction. A roller brush 8 for removing chips and the like generated by processing is disposed downstream, and the chips and the like are discharged to a pit 9.

The cutting machines A, B, C and D are configured as laser cutters in the embodiment, and output a laser oscillated from a laser oscillator 10 from a laser nozzle 11 through a resonator. This laser nozzle 11
Is movable in a direction perpendicular to the transport direction of the plate-shaped material W.

That is, a slide portion 12 a is provided on an upper portion of a housing 12 integrated with each laser nozzle 11, and a rack 12 b provided on a side portion of the housing 12 is engaged with a pinion 14 of an output shaft of a motor 13. I have. The motor 13 is provided for each of the cutting machines A to D, and the respective laser nozzles 11 can be moved in the direction perpendicular to the plane of FIG. Immediately
In addition, each of the cutting machines A to D corresponds to the plate material W shown in FIG.
The direction perpendicular to the direction of conveyance to the left
That is, it can be moved in the direction perpendicular to the paper surface of FIG. The control means 5 is connected to each motor 13.

Of course, the cutting machines A to D may be cutting machines other than the laser cutter, such as a water jet and a plasma.

The CAD / CAM system 6 has a keyboard 1 for converting the external shape of a work into NC data.
5. Equipped with an input means such as a mouse 16, a main body 17, and a display unit 18. For example, as shown in FIG. 2, a number of intersections between the number lines s and the work outline are obtained and converted into NC data for each of the cutting machines A to D. The data is stored in the floppy disk 19.

That is, first, when the data of the intersections is obtained, the processing portions (cutting lines) of the respective cutting machines A to D are allocated. A cutting line (a downstream partway along the way) that allows the user to trace the shape while moving only from the upstream side (the right side in FIG. 2 in the embodiment) to the downstream side (the left side in FIG. 2). (A curved portion which does not include the turn-up portion R going upstream). Then, for example, as shown in FIG. 3, when the cutting lines of all the cutting machines A to D are finally combined, they are allocated so as to cover all the outer shapes.

When the allocation of the processing parts of the cutting machines A to D is completed in this way, the moving amount (moving speed) per unit time is determined for each of the cutting machines A to D, and the moving amount is converted into NC data. It is stored on the floppy disk 19.

In the above-described cutting apparatus, when the plate material W such as the coil material 2 or the blank material 3 is conveyed by the conveying means 4 at a constant speed, each of the cutting machines A to D is NC
The cutting process is performed while the movement is controlled by the control in a direction orthogonal to the transfer direction of the work.

That is, as shown in FIGS. 4 and 5, when the plate-shaped material W is conveyed from right to left in the drawings, the respective cutting machines A to D are operated by NC in a direction orthogonal to the conveying direction. Processing is performed while the movement is controlled in accordance with the data, and the assigned cutting lines are cut. More specifically, as shown in FIG.
From the state of 5 (a), transport and move to the left of this figure.
You. 5 (b) and (c) in FIG. 5 as the conveyance of the plate material W progresses.
Then, the first cutting machines A and B are set in a plate shape based on the movement control.
The material W is moved in a direction orthogonal to the conveying direction, and
As shown in (d), the downstream portion of the plate material W is cut into a predetermined shape.
Refuse. The second cutting is performed by the further progress of the plate material W in the transport direction.
Machine C and the third cutting machine D in order based on the movement control.
Move in the direction perpendicular to the transport direction of the next plate material W, and
The second and the third parts follow the shape of the part folded back in the transport direction.
The cutting is performed by the cooperative cutting action of the cutting machines C and D
These are shown in (e) and (f) of FIG. Thereby, in FIG.
As shown in (f) and (g), a hole is formed in the plate material W.
It can be carried out. In the embodiment, the plate-shaped material W is further advanced in the transport direction.
In the second cutting machine and the third cutting machines C and D described above,
The movement control is repeated, so that the
Similarly, a hole is drilled, and this process is shown in FIG.
(H). : In the final stage of the conveyance of the plate material W, the first cutting
The cutting machines A and B are moved in the transport direction based on the movement control.
Move in the orthogonal direction to cut the downstream part of the plate-shaped material W
This state is shown in FIG. : As described above, the cutting process is performed as shown in FIG.
Obtain the completed plate material.

At this time, since the moving direction of each of the cutting machines A to D is limited only to the direction orthogonal to the direction in which the plate-shaped material W is conveyed, the folded portion R is processed by only one cutting machine. Although it is impossible to do so, in the present invention , a plurality of cutting machines cooperate to cut the folded portion R.

Then, the moving direction of each of the cutting machines A to D is set to 1
By limiting in the axial direction, the device can be simplified.

Further, since the plate material W is processed while being fed at a constant speed, setup for the next processing or the like is also easy.

The number of the cutting machines A to D can be freely set according to the shape of the work and the like, and it goes without saying that other configurations can be implemented in various modes without departing from the gist of the present invention. Nor.

[0021]

As described above, according to the method for cutting a work of the present invention, the conveying means for continuously conveying the plate material in a certain direction.
To the work direction of the work
Disposed above the transfer device, and
Movably arranged in a direction perpendicular to the transport direction of the
Downstream first cutting machine, upstream second cutting machine
And a third cutting machine.
Transport from the upstream to the downstream by the feeding device, and
Movement control in the direction orthogonal to the
Cutting the downstream portion of the workpiece into a predetermined shape;
With the progress of the transfer, the second cutout disposed on the first upstream side
Cutting machine and a third cutting arranged upstream of the second cutting machine
Movement control of the machine in the direction orthogonal to the workpiece transfer direction,
Cooperative cutting with a folded part in the work transfer direction
In this process, a work made of a plate-shaped material is transported at a constant speed, and a plurality of cutting machines arranged at predetermined intervals along this transport direction are cut while controlling the movement in the direction perpendicular to the transport direction. This enables flexible handling of complex shapes where the shape line is folded back in the transport direction, and allows processing while feeding the material. It is possible to construct a line that has been established. In addition, the moving direction of the cutting machine is limited to only one axial direction, so that the apparatus can be simplified.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating an example of a system configuration of a cutting apparatus according to a cutting method of the present invention.

FIG. 2 is an explanatory diagram illustrating synchronization of a processing speed.

FIG. 3 is an explanatory view showing a cutting line of each cutting machine.

FIG. 4 is an explanatory view for explaining a middle of a cutting process.

FIG. 5 is a process diagram of the present invention .

[Explanation of symbols]

4 Conveying Means 5 Control Means 6 CAD / CAM System 11 Laser Nozzle A, B First Cutting Machine, C, D Second Cutting Machine R Folding Section W Workpiece Plate Material

Claims (2)

(57) [Claims] 1. A sheet material is continuously conveyed in a certain direction.
With respect to the conveying means and the conveying direction of the work made of the plate material
Separated from each other, disposed above the transfer device, and
Movable in the direction perpendicular to the transfer direction of the workpiece
The first cutting machine on the downstream side, which is disposed in the
And a third cutting machine, wherein the work is transferred from upstream to downstream by the transfer device, and the first cutting machine is moved in a direction orthogonal to the transfer direction of the work.
And cut the downstream part of the work into a predetermined shape.
In the cutting step and the subsequent progress of the transfer of the workpiece, the upstream side of the first cutting machine
A second cutting machine arranged, and a second cutting machine arranged upstream of the second cutting machine.
The third cutting machine placed in the direction perpendicular to the workpiece transfer direction
With a turn-back part in the workpiece transfer direction
Work cutting method according to claim and performing cooperatively cut, in that it consists of. 2. The movement control of each cutting machine is performed by NC control.
The method for cutting a work according to claim 1, wherein the method is performed.