JPH05146888A - Work supporting table for laser beam machine - Google Patents

Abstract

PURPOSE:To increase versatility by easily forming the supporting surface corresponding to works to be machined on the work supporting table. CONSTITUTION:A rotary bar 3 where a frog pin 12 and a work fixing member 13 are provided at different angles is provided on a table frame 2 and the frog pin 12 side or the work fixing member 13 side is located on the work supporting surface 11 according to the works by rotation of this rotary bar 3, by which even small works W can be positioned and fixed separately on the work supporting surface 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work support table for a laser beam machine, and more particularly to a work support table which can be reliably supported on a work support surface regardless of the shape and size of the work.

[0002]

2. Description of the Related Art Conventionally, in this type of laser processing machine,
For example, in order to support a flat plate-shaped work, a sword mountain table in which a plurality of fixed sword mountain pins form a work supporting surface is generally used. Then, at the time of processing, the work placed on the work supporting surface of the table was fixed by the clamp members attached to the table at a plurality of edge portions.

[0003]

However, in such a structure, the work can be fixed only at the edge of the table. Therefore, for example, when it is desired to process a plurality of small fixed workpieces such as discs in a row and in a row, the table can be machined. It was difficult to clamp all the workpieces placed in the middle part one by one. Therefore, there is a limit to the type of work that can be processed.

Therefore, an object of the present invention is to make it possible to easily form a supporting surface corresponding to a work to be processed on a work supporting table and to enhance versatility.

[0005]

That is, according to the present invention, a rotary bar having a sword pin and a workpiece fixing member provided at different angles is provided on a table frame, and the rotation of the slewing bar causes the sword mountain pin side or the workpiece depending on the workpiece. By arranging the fixing member side on the work supporting surface, even small works can be individually positioned and fixed on the work supporting surface.

[0006]

[Function] When cutting a relatively large flat work piece, which is usually one piece, by rotating the rotating bar, the side of the rotating bar that has only the sword pin is located on the work support surface. The work is supported on the support surface consisting of. If necessary, the work is fixed by a clamp member provided at the edge of the table.

On the other hand, in the case of processing a plurality of small-sized work pieces, for example, a fixed shape, the rotary bar is rotated and the side with the work fixing member is positioned on the work support surface. A plurality of works are aligned on the support surface corresponding to each work fixing member, and the works are individually positioned and fixed on the work supporting surface by each work fixing member.

[0008]

EXAMPLES Specific examples of the present invention will be described below.

FIG. 1 is a plan view showing an embodiment of a work supporting table of a laser beam machine of the present invention, and FIG. 2 is a line A--A of FIG.
1 is a sectional view, FIG. 3 is a sectional view taken along line BB of FIG. 1, and FIG.
FIG. 5 is an enlarged cross-sectional view of FIG. 5, and FIG. 5 is a side view showing the rotation drive unit of the rotary bar.

In FIG. 1, a work supporting table 1 provided movably with respect to a base of a laser beam machine includes a table frame 2, a plurality of rotary bars 3, a plurality of fixed bars 4 and a bar rotation driving section 5. Have.

For example, four rotary bars 3 are arranged in parallel with the longitudinal direction of the table frame 2, and two fixed bars 4, for example, two in total, are arranged between the rotary bars 3 at equal intervals. The fixing bar 4 is fixed to the table frame 2 by a plurality of mounting seats 39 that are provided on the table frame 2 in the width direction. The rotary bar 3 is located at a position slightly higher than the fixed bar 3 and has both ends at the table frame 2 and the table frame 2.
Is rotatably supported by brackets 6 provided on the bearings 7, 8 and 9, respectively.

A plurality of sword pins 1 are attached to the fixed bar 4.
0 is attached upward at a predetermined interval, and the work support surface 11 is formed at the height of the tip.

As shown in FIGS. 2 and 4, the rotary bar 3 has a plurality of lengths which are slightly shorter than those of the sword pin 10 provided on the fixed bar 4 and have the same tip height when facing upward. Kenzan pins 12 are attached at predetermined intervals. In addition, the sword bar pins 12 and 1 are attached to the rotary bar 3.
An inner lining chuck 13 as a work fixing member is attached to the opposite side of 80 degrees at regular intervals.

The chuck 13 has a supporting shoulder portion 13a having the same height as the sword pin 10 when facing upward, and can be inserted into a circular reference hole H formed in the work W so as to project from the shoulder portion 13a. Further, it is provided with a three-jaw chuck portion 13b which is moved in the expanding direction by air pressure.

The chuck 13 is provided at, for example, three intervals with respect to the above-mentioned sword mountain pin 12 and two sword mountain pins 14 similar to the above-mentioned sword mountain pin 12 are attached respectively at two places between them.

Next, the rotation drive section 5 of the rotary bar 3 will be described with reference to FIG.

One end of each rotary bar 3 is projected through the bracket 6 into the hollow portion at the right end of the table frame 2, and sprockets 15, 16, 17, 18 are attached to the ends thereof. These sprockets 15, 16, 1
A roller chain 25 is suspended between 7, 18 and sprockets 19 and 20 rotatably supported on the table frame 2 and idle sprockets 21, 22, 23 and 24 for tensioning. Both ends of the roller chain 25 are double rod type cylinders 26 attached to the table frame 2.
Connected between both rods of the cylinder 26,
In the retreat limit, the rotary bar 3 is rotated 180 degrees forward and backward, and is switched between a first position in which the sword pin 12 side faces upward and a second position in which the chuck 13 and sword pin 14 side face upward.

Further, each rotary bar 3 is provided with a rotary joint 27 fixed to the bracket 6, and two air supply pipes 28 and 29 drawn out from the processing machine side are connected to each chuck via the rotary joint 27. It is piped to 13.

Further, as shown in FIGS. 1 and 3, in addition to the rotary bar 3 and the fixed bar 4, for example, three lifter bars 30 are provided in parallel to these bars at the table frame 2 at substantially equal intervals. And the bearings 32, 3 are attached to the table frame 2 and the bracket 6 around the shaft 31 provided at the lower ends of both ends.
It is rotatably supported via 3. The lifter bar 30 has a plurality of support balls 34 protruding from the top end thereof at regular intervals, and the height of the balls 34 is such that when the lifter bar 30 faces upward, the work support surface 1 formed of the sword pins 10, 12, etc.
It is set to a position slightly higher than 1. That is, when the work is attached to or detached from the table 1, it is used to slightly lift or temporarily hold the work from the tops of the sword pins 10, 12, or 14, if necessary.

One end of each lifter bar 30 projects a shaft 31 into the hollow portion at the left end of the table frame 2, and sprockets 35, 36 and 37 are attached to the shaft 31. The drive is similar to that of the drive mechanism of the rotary bar 3 described above, and the cylinder 38 drives it to rotate forward and backward by approximately 180 degrees. When not in use, the lifter bar 30 is rotated downward, and the work support surface 11 is rotated.
Have been immersed in.

The rotary bar 3 and the lifter bar 30 are rotatably supported on the mounting seat 39 via brackets 40 at a plurality of intermediate portions thereof.

Work clampers 41 are attached to the table frame 2 at a plurality of positions, for example, on the right edge and one edge on the working side. This clamper 41 is a well-known clamper, and as shown in FIG. 1, the edge portion of, for example, a quadrangular plate-like work W ′ placed on the table 1 is automatically or manually positioned and fixed to the work supporting surface 11 on the table 1. You can do it.

With the above construction, when the ordinary rectangular plate-like work W'is placed on the table 1 for processing,
The cylinder 26 is driven to rotate each rotary bar 3 to the first position. That is, the state in FIG. 2 is changed to a posture in which the sword mountain pin 12 which is 180 degrees opposite is directed upward. As a result, the work support surface 11 including the sword pin 10 on the fixed bar 4 and the sword pin 12 on the rotary bar 3 is formed. The work W ′ is placed on the work supporting surface 11 via the lifter bar 30 and positioned and fixed by the clamper 41.
In this state, processing such as laser cutting is performed by the processing head L of the laser processing machine.

On the other hand, when a plurality of small works, for example, disk-shaped works W are arranged on the table 1 and the same processing is performed, the cylinder 26 is driven to rotate each rotary bar 3 to the second position. That is, as shown in FIG. 2, the chuck 13 and the sword pin 14 are converted into an upward posture. As a result, the work support surface 11 including the blade pin 12 on the fixed bar 4, the blade pin 14 on the rotating bar 3 and the chuck 13 is formed.

A plurality of works W are arranged in an array as shown in FIG. 1 so as to correspond to the plurality of vertical and horizontal chucks 13 projected on the work support surface 11. At this time, the reference hole H formed in advance in each work W is fitted into the chuck portion 13b which has a smaller diameter than the reference hole H. Each work W is stably supported by the shoulder portion 13a of the chuck 13 and the four sword pin 10 and 14 around the shoulder portion 13a. After that, air is supplied to the chucks 13 all at once, and the chuck portions 13b are opened. By the tension of the chuck portion 13b, each work W is reliably positioned and fixed on the work support surface 11 and in a state of being centered at a predetermined position. In this state, work W
Laser processing is performed.

The present invention is not limited to the above-mentioned embodiment, and various structures of the rotary bar 3, the fixed bar 4 and the lifter bar 30 or the arrangement configuration with respect to the table frame 2 may be appropriately modified and embodied. You can also In addition, the fixed bar 4 is not provided and the rotary bar 3 is used as a whole.
It is also possible to individually or individually rotate the plurality of groups and selectively change the shape of the support surface 11 according to the shape of the work.

Also, the work fixing member is not limited to the above-mentioned embodiment, and other fixing means such as clamping a work by clamping a nut from above with respect to a screw inserted into a reference hole of the work may be used. It can also be used.

Further, the work support table of the present invention is
It is not limited to the processing table that is installed on the laser processing machine,
It is also applied as a pallet type that can be carried in and out of the laser processing machine at the processing position.

[0029]

According to the present invention, by rotating the rotary bar, the sword pin side or the work fixing member side can be positioned on the work supporting surface according to the work, so that the work is irrespective of the size and shape of the work. A support surface corresponding to a work to be processed can be easily formed on the support table, and versatility is enhanced. A plurality of small work pieces can be aligned on the work support surface and individually fixed and positioned, and the work pieces can be processed with the work pieces securely fixed.

Further, the work can be securely fixed by fixing the work to the reference hole previously formed in the work with the lining chuck. For example, in the case of a disk-shaped work, the work can be accurately centered and the positioning accuracy is improved. ..

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a work support table of a laser beam machine according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

3 is a sectional view taken along line BB of FIG.

4 is an enlarged cross-sectional view taken along line CC of FIG.

FIG. 5 is a side view showing a rotary drive unit of a rotary bar.

[Explanation of symbols]

 1 Work Support Table 2 Table Frame 3 Rotating Bar 4 Fixing Bar 10 Kenzan Pin 11 Work Support Surface 12 Kenyama Pin 13 Inner Chuck as Work Fixing Member 14 Kenyama Pin W, W'Work H Reference Hole

Claims (3)

[Claims] 1. A plurality of rotary bars are rotatably provided on a table frame, and a plurality of blade pins are provided at a predetermined interval on one surface side of each rotary bar, and the rotary bar of the blade pins is used as a center. A work fixing member for positioning and fixing the work on the work supporting surface is provided on the opposite side, and it is possible to selectively position the blade pin side and the work fixing member side on the work supporting surface by rotating each rotary bar. Characteristic laser work machine work support table. 2. The laser beam machine according to claim 1, wherein the workpiece fixing members are provided on the rotary bar at regular intervals, and the sword pins are provided at predetermined intervals along with the workpiece fixing member. Work support table device. 3. The work supporting table for a laser beam machine according to claim 1, wherein the work fixing member is an inner lining chuck that can be inserted into a reference hole formed in the work.