JPH0347691A - Laser beam machine - Google Patents

Abstract

PURPOSE:To prevent a spark due to collision of a laser beam with supporting pins and to save labor to remove the supporting pins on a laser beam path and to improve the working rate by connecting conical parts of the supporting pins and insertion parts by deviating the respective centers thereof by specified dimensions. CONSTITUTION:The respective centers of the conical parts 6 of turning parts 5 of the supporting pins 2 whose fixed parts 4 are set in plural setting holes 10 of a table 1 and the insertion parts 7 are deviated by the specified dimensions. The turning parts 5 are turned with this deviation as the radius and with the insertion parts 7 as the centers and the tips of the conical parts 6 are retreated from the positions corresponding to a machining shape of material 9 to be machined. The material 9 to be machined is then held at the retreated positions. The adjacent supporting pins 2 turn with the radius under half the distance mutually and are not brought into contact with each other. Since the material 9 to be machined is held within the distance with the deviation as the radius, it is prevented that the material 9 to be machined is bent and machining is stopped and the working rate of the machine and yield of a machined product are improved by performing cutting machining by a laser beam irradiation part 3.

Description

[Detailed Description of the Invention] [Summary] Uke relates to a laser processing machine that can move the tip of a pin out of the path of a laser beam without removing the pin. The purpose of the present invention is to provide a laser processing machine that can prevent problems and increase the operating rate by enabling unmanned processing. The pin has a plurality of holes arranged vertically at predetermined intervals on the top surface, and the pin consists of a fixed part and a rotating part. It has a predetermined height from the surface of the table, and has a fitting hole in the center of the top surface.The rotating part consists of a conical part, a fitting part, and a connecting part, and the conical part has a tip pointing upward. The fitting part is rotatably fitted into the fitting hole, and the connecting part connects the conical part and the fitting part to the center of each other, and the adjacent receiver is less than half the distance from the pin. The laser irradiation part irradiates the laser beam vertically from a predetermined distance above the workpiece, and connects the plurality of receivers fitted into the plurality of holes in the table. holds the workpiece horizontally with a pin, and while irradiating the workpiece with laser light from the laser irradiation unit, moves the table and laser irradiation unit relatively in the horizontal direction to form the workpiece into an arbitrary shape. It is configured to be cut.

[Industrial Application Field] The present invention relates to a receiving pin structure for a workpiece material in a laser processing machine, and in particular, the present invention relates to a laser processing machine in which the receiving pin can retract the tip of the pin from the path of the laser beam without removing the pin. It is related to.

In recent years, laser processing machines that cut metal materials into arbitrary shapes have become popular, and during processing, it is common to support the material with a number of pins and irradiate the material with laser light from above. In this case, the pins are removed from the receiver in the laser beam irradiation path, but the material in that area becomes insufficiently supported and bends, resulting in poor processing, so there is no way to prevent this. desired.

[Conventional technology]

As shown in FIG. 4, the pins 2a, 2b, . . . can be freely attached and detached to the plurality of implant holes 10a, 10b, . is implanted in. The receiver is pin 2a + 2b
, ... is about 100 to 300 at intervals of 100 mm, for example.
Books are planted in the shape of a mountain.

The laser irradiation section 3a is a laser beam generation section that is not shown.

It is composed of a laser processing head 30 and a height sensor 31. The laser processing head 30 is a nozzle that irradiates laser light from a laser light generating section, and the height sensor 31 measures the distance between the tip of the laser processing head 30 and the upper surface of a plate-shaped workpiece 2, for example, a steel plate 9a, to a predetermined dimension. (for example, 1 ugly).

The reason why the steel plate 9a is supported by supporting pins 2a+2b+- on the table 18 is that when the steel plate 9a is cut by irradiating the laser beam, the laser beam is transmitted to the table 1 from the cut gap.
Even if the light is irradiated in the direction of the surface a, there will be no engraving on the surface of the table 1a as long as there is a certain distance, so a space of a predetermined height H is provided.

Therefore, the plurality of supports hold the steel plate 9a (for example, standard size 914 x 1829 mm) at the tips of the pins 2a, 2b, -.
Bring the tip of the laser processing head 30 close to the top surface, for example, by about 1 inch, and while irradiating the laser beam, move the laser processing head 30 in the horizontal direction of the X-axis, and move the table 1a in the horizontal direction of the Y-axis. While moving each piece, it is cut into the desired shape.

In this case, the machining shape is input as data into the machine program of the machine, and prior to machining setup, the data is displayed on the display, and pins 2a12b+ and - are connected to the receivers of table 1a for the supports that overlap the machining line of the machining shape. is pin 2a
Remove 12bl-・-. This is because during processing, when the tip diameter of the pins 2a, 12bl, etc., which is 0.2 mm, and the diameter Q of the laser beam irradiated from the laser processing head 30, which is 2 mm, overlap, sparks occur and gas and iron oxide powder are scattered. This is to avoid the possibility that a small explosion will occur due to rebound, which will not only result in a defective workpiece, but also cause the pin 2a of the receiver to melt and be damaged.

[Problem to be solved by the invention]

According to the above conventional method, the pin is removed from the path of the laser beam so that the laser beam does not coincide with the tip of the pin, so the receiver cannot support the workpiece in the area where the pin has been removed. Therefore, the workpiece bends, and when the bending exceeds the limit, an alarm is detected by the height sensor, making it impossible to cut and stopping the machine. In addition, the processed product becomes defective due to interruption of processing.

■Unmanned machining is difficult because it takes time to set up machining, and when machining is stopped due to (■), new setup is required.

Therefore, due to (1) and (2), the operating rate of the laser processing machine decreases and the yield of processed products is poor.

■For example, with a steel plate with a thickness exceeding 0.5nun, the bridge can support the pin, so it can be processed from a flat plate, but
For steel plates with a thin thickness of 0.5 mm or less, even if the receiver is supported with pins, the m-plate surface will float, making it impossible to support and machining. In addition, since the pin position of the receiver is fixed, additional machining of the finished product is difficult and impossible to support.

There is a problem.

In the present invention, there is no need to remove the pin from the receiver that is in the path of the laser beam, and the laser beam and the receiver prevent sparks and product defects due to collision between the pins, enabling unmanned processing and increasing the operating rate. The purpose is to provide processing machines.

[Means for Solving the Problems] Fig. 1 is a diagram showing the principle of the present invention, in which (a) is a side view and (b) is an enlarged view of the main part.

In the figure, 9 indicates the workpiece, and 3 indicates the workpiece 9 perpendicularly from a predetermined distance above the workpiece 9.
A laser irradiation part that irradiates a laser beam to a laser beam; 5 is a fixed part, the lower part of which is removably fitted into the implant hole 10 of the table 1, the upper part has a predetermined height from the surface of the table 1, and has a fitting hole 41 in the center of the upper surface; is provided on the pin 2, and the conical portion 6. A rotating part consisting of a fitting part 7 and a connecting part 8; 6 is a conical part provided on the rotating part 5 and has a conical tip with an upper end; 7 is a conical part provided in the rotating part 5 and is connected to the fitting hole 41; A fitting part 8, which is rotatably fitted into the rotating part 5, is provided in the rotating part 5, and the conical part 6 and the fitting part 7 are arranged so that their respective centers are shifted by a predetermined dimension, which is less than half the distance from the pin 2, between the conical part 6 and the fitting part 7. This is a connecting part to connect.

Therefore, the plurality of supports fitted into the plurality of implant holes 10 of the table 1 hold the workpiece 9 horizontally with the pins 2, and while the workpiece 9 is irradiated with laser light by the laser irradiation unit 3, the table 1 and the laser It is configured to cut the workpiece 9 into an arbitrary shape by moving the irradiation section 3 relatively in the horizontal direction.

[Function] In the plurality of receivers in which the fixing parts 4 are implanted into the plurality of implantation holes 10 of the table 1, the center of the rotating part 50 of the pin 2 and the center of the conical part 6 and the center of the lower end part 7 are shifted by a predetermined dimension. The rotating part 5 is rotated about the insertion part 7 using this deviation as a radius, and the tip of the conical part 6 is retracted from a position corresponding to the machining shape of the workpiece 9. Then, at the retreated position, the workpiece 9
hold. At this time, the adjacent receiving pins 2 rotate at a radius less than half the distance between them, so they do not come into contact with each other. Therefore, the workpiece 9 can be held within a distance defined by the deviation as the radius, so that the workpiece 9 is not warped by cutting with the laser irradiation unit 3, and the workpiece 9 is not bent. Since the bending does not exceed the limit and the processing is stopped, the initial setup is easy, and there is no need to re-thread due to the processing stop, which improves the operating rate of the equipment and the yield of processed products. .

[Example] An example of the present invention will be described below with reference to FIGS. 2 and 3. The same reference numerals refer to the same objects throughout the design.

In FIG. 2, a fixed pin 4a, a rotating pin 5a and a steel plate 9
a corresponds to the fixed part 41 rotating part 5 and workpiece 9 in FIG. 1, respectively, and the lower end part 7a and the fitting part 70 in FIG. 2 correspond to the fitting part 7 in FIG. 1. 1st in other 2nd figure
Items with the same name as in the figure correspond to each other.

As shown in FIG. 2(a), pins 28, 2B, and
- is removably implanted with a fitting pin 20.

The distance from the surface of the table 1a to the tips of the pins 2A, 2B, ... is a predetermined height H;
The steel plate 9a is held at the tip of the laser processing head 30, and the tip of the laser processing head 30 is brought close to the height where the tip of the height sensor 31 of the laser irradiation unit 3a hits the upper surface of the steel plate 9a.

As shown in Fig. 2 (5), the receivers are pins 2A, 2B, -.
The receiver (hereinafter, the pin 2A will be representatively explained) is composed of a fixed pin 4a and a rotating pin 5a.

The fixing pin 4a has a stepped shape consisting of a fitting pin 20 and an upper part 40, and the fitting pin 20 fits into the insertion hole 10 of the table 1a.
a, 10b, - (described below with implantation hole 10a)
The upper end 40 has a predetermined height h from the surface of the table 1a, and a fitting hole 41a is provided at the center of the upper surface.

The rotating pin 5a is composed of a conical part 6a, an upper end part 7a, and a connecting part 8a. The conical part 6a has a conical shape with an upper end, and a fitting pin 60 on the bottom fits into a fitting hole on the top surface of the leading end of the connecting part 8a. 80 and connected. The lower end part 7a has a fitting part 70 rotatably fitted into the fitting hole 41 on the lower surface,
The upper portion is connected to the connecting portion 8a. And the connecting part 8a
is the center of the conical portion 6a and the center of the lower end portion 7a with a predetermined dimension R.
(for example, 30 mm). That is, it rotates with a radius R. Since the spacing between the insertion holes 10a of the table 1a is 100 mm as described above, the pins of the receiver do not come into contact with each other even if the table 1a is rotated by the radius R.

With this configuration, first, prior to machining setup, the data of the machine program is displayed on the display, and the receiver selects pins 2A, 2B, etc. that overlap the machining path of the machining shape. As shown in FIG. 3, the lower end 7a
The conical part 6a is rotated about the insertion part 70 with a radius R to retract the tip from the machining path.

Therefore, the implant holes 10a, 10b, - of the table 1a are
The plurality of supports fitted in the pins 2A, 2B, - hold the steel plate 9a, and the laser processing head 30 is moved in the X-axis direction according to the desired processing shape while irradiating the steel plate 9a with laser light from the laser irradiation section 3a. Cutting is performed by moving the table 1a in the °Y-axis direction.

In addition, when the workpiece is a thin plate 5, such as a steel plate 9a with a thickness of 0.5 mm or less, or when additional machining is required for a finished product, these workpieces are set in a jig (not shown), and on the other hand,
By removing the rotating pins 5a of pins 2A, 2B, ... and supporting the jig with the fixing pins 4a, the table la and the plurality of fixing pins 4a can be attached to the table la and the reference pins of the jig. Also, since there is a height h up to the top surface, it can be cut.

In addition, in the case of additional machining of a finished product, the supports located around the finished product can be processed by rotating the pins 2A, 2B, ... and supporting them from the inside from the periphery of the finished product. can.

In this way, during machining setup, there is no need to pull out the pins 2A, 2B, etc. depending on the shape of the workpiece, and the pivot pin 5a is rotated to support the steel plate while avoiding the path of the laser beam. 9a can be sufficiently supported, and the receiver is connected to pins 2A and 2.
The spark caused by the collision of laser beams with B, -, - can prevent damage to pins 2A, 2B, - and defects in processed products, improving yields, and reducing equipment stoppage and restart due to failure. This eliminates the time required for setup, improves the operating rate, and enables unmanned machining. Also, the receiver is pin 2A, 2
Since the conical part 6a of B, -, - is removable, even if the tip is damaged, only this part needs to be replaced. Furthermore, processing of thin plate materials and additional processing of finished products are also possible.

[Effects of the Invention] As explained above, according to the present invention, the receiver on the table is arranged so that the center of the conical part of the rotating part of the pin and the center of the lower end are shifted by a predetermined dimension, and the lower end is set with this shift as a radius. By rotating the conical part around the fitting pin part, the workpiece can be supported at a position where the tip of the rotating part is retracted from the position corresponding to the machining shape of the workpiece. Objects can be sufficiently supported, and the receiver can prevent pin damage and defective workpieces due to sparks caused by the collision between the pin and the laser beam, and the receiver can reduce the frequency of pin replacement and improve the yield of workpieces. improves.

■It eliminates the time required to stop and reinstall the equipment due to failures, improves the operating rate of the equipment, and enables unmanned processing.

■It is possible to support a jig, and by setting it on a jig, it becomes possible to process thin plate materials and perform additional machining on finished products.

There is an effect.

FIG. 4 is a configuration diagram showing a conventional laser processing machine.

In the figure, 1.1a is a table, 2.2a and 2b are pins, 3.3a is a laser irradiation part, 4 is a fixed part, 4a is a fixed pin, 5 is a rotating part, 5a is a rotating pin,
6, 6a are conical parts, 7.70 are insertion parts, 7
a is the lower end, 8.8a is the connecting part, 9 is the workpiece, 9a is the steel plate, 10.10a is the planting hole,
41.41a and 80 indicate insertion holes.

[Brief explanation of drawings]

Fig. 1 is a diagram of the principle of the present invention, Fig. 2 is a configuration diagram showing an embodiment of the invention, and Fig. 3 is an explanatory diagram of the embodiment. 1I21 (Ren ≦ 2 Guo Fei) Accounting diagram of solid eruption 1 + rfJ (shi) Inkosungon's portion j Masuguchi Homare sf4/) Example 1 Ice pain diagram No. 2 Ro 542-

Claims (1)

[Claims] A laser processing machine comprising a table (1), a plurality of receiving pins (2), and a laser irradiation part (3), wherein the table (1) is arranged vertically at predetermined intervals on the upper surface. It has a plurality of implant holes (10) provided, and the receiving pin (2
) consists of a fixed part (4) and a rotating part (5), and the lower part of the fixed part (4) is connected to the implant hole (1) of the table (1).
10), and the upper part is attached to the table (1).
It has a predetermined height from the surface, and has an insertion hole (
41), the rotating part (5) consists of a conical part (6), a fitting part (7) and a connecting part (8), and the conical part (6) has an upper tip. It is formed into a conical shape, the fitting part (7) is rotatably fitted into the fitting hole (41), and the connecting part (8) is connected to the conical part (6) and the fitting part ( 7) are connected by shifting their respective centers by a predetermined dimension that is less than half the distance from the adjacent receiving pin (2), and the laser irradiation part (3) is connected to the workpiece (9). A laser beam is irradiated vertically onto the workpiece (9) from a predetermined distance above, and a plurality of receiving pins (2) fitted into a plurality of implant holes (10) of the table (1) are used to irradiate the workpiece (9) with laser light. While holding the workpiece (9) horizontally and irradiating the workpiece (9) with laser light from the laser irradiation unit (3), move the table (1) and the laser irradiation unit (3) horizontally. A laser processing machine characterized by cutting the workpiece (9) into an arbitrary shape by relatively moving in the direction.