JP2547189Y2 - Chip removal equipment for cutting equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chip removing device for a cutting device for processing metal.

[0002]

2. Description of the Related Art When constructing a large-sized structure such as an LNG tank or a hull structure, a large plate material is cut into a required shape, a groove is formed, and a required bending or curved surface processing is performed. After the assembly, the assembly is generally performed by welding. Conventionally, a gas cutting method or the like is generally used for cutting the plate material as described above.

[0003] However, since the cutting by the gas cutting method is a method of cutting by melting a metal, it is difficult to maintain the dimensional accuracy. As a result, the product accuracy at the time of assembling is deteriorated, and the cut end surface has irregularities. In addition, there is a problem that welding defects due to the irregularities are likely to occur at the time of welding due to the occurrence of, and in order to increase the cutting accuracy, a serious post-process such as grindering is required, thereby increasing the manufacturing cost. Had problems.

Under these circumstances, in recent years, there has been an increasing demand for an excellent cutting technique capable of improving cutting accuracy, improving assembling accuracy, preventing the occurrence of welding defects, and realizing low cost.

For this reason, in recent years, as shown in FIG. 6, a method has been proposed in which a large thick plate 4 is cut by a processing tool 3 attached to a spindle 1 via a chuck 2. This method uses the machining tool 3 attached to the spindle 1
The cutting depth is divided into a plurality of times, and the depth is gradually reduced (similar method to grooving). In this method, the tool 3 is replaced after the cutting operation is completed,
A groove 5 as shown in FIG. 7 can be machined on the cut end surface. Such a method has been conventionally used in grooving of a relatively small material performed by a vertical milling machine, but at the time of grooving, it is difficult for chips in the groove to be discharged to the front, so that the cutting portion There is a problem that the surface properties are deteriorated and the chips 6 are melted and fixed to the processing tool 3 shown in FIG. 6 to shorten the life of the processing tool 3. Therefore, a large amount of cutting oil is usually supplied to the processing portion. It has been practiced to wash away chips with cutting oil. According to this method, the processing portion can be cooled by the cutting oil, so that the cutting speed can be increased and the cutting efficiency can be increased.

[0006] However, in the system in which chips are washed away with cutting oil, it is necessary to degrease at the time of welding later, so that there is a problem that the above-mentioned degreasing work becomes extremely difficult, especially for a large thick plate material.

For this reason, in recent years, in order to omit the degreasing operation, a dry machining method in which cutting oil is not applied even if the cutting speed is slightly sacrificed has been implemented for relatively small materials. It has become to.

[0008]

However, when a large thick plate material is to be cut by multi-stage cutting in the above-mentioned dry method, chips expanding about 10 times due to the cutting are cut into the cut groove 7 as shown in FIG. As the depth of the groove 7 increases, it becomes more difficult to discharge the chips 6 because the grooves 7 are filled, and the chip 6 deteriorates the surface properties of the cut portion,
There is a problem that the chips 6 are melted and fixed to the processing tool 3 to shorten the life of the processing tool 3, and the chips 6 scatter and accumulate around the cut grooves 7.
Must be removed by a worker, and this removal work becomes very difficult.

After the cutting is completed, the groove 5 as shown in FIG. 7 is machined on the cut end face by exchanging the working tool 3, but at this time, welding defects are not generated at the time of welding. Therefore, it is necessary to accurately protect the lip 8 of the groove 5 in order to carry out. However, the large plate 4 is almost always
It has an irregular bending shape such as warpage, kinking, waving, etc.
In order to keep the lip 8 of the groove 5 constant, it is necessary to provide a scanning sensor to always detect the gap with the upper surface of the plate 4 and control the vertical position of the spindle 1 so that the gap signal is constant. However, there has been a problem that the chips 6 deposited on the plate material become obstacles and the upper surface of the plate material 4 cannot be accurately detected.

Therefore, it has not been generally practiced to cut a large thick plate material by a dry method using a spindle.

The present invention has been made in view of the above-mentioned conventional problems, and cuts a large thick plate material with high accuracy by a dry method using a spindle, prolongs the life of a working tool, and reduces An object of the present invention is to provide a chip removing device of a cutting device that prevents the accumulation of chips and eliminates the operation of chip removal, thereby enabling the copying sensor to perform reliable detection.

[0012]

According to the present invention, there is provided a spindle for rotating a machining tool, a spindle support for supporting the spindle, a vertically movable support for the spindle support, and a plate material upper surface at a lower end. A support having a scanning sensor that mimics the upper surface of the spindle, and an upper hood attached to the spindle support so as to surround the outer periphery of the spindle; and A chip suction / collection hood including a lower hood attached thereto, a flexible chip capture brush attached to the lower side of the lower plate corresponding to the chip suction / collection hood, and a chip suction brush disposed inside the chip capture brush. A ring nozzle having a plurality of ejection ports for ejecting air toward a cutting portion of the plate material by the machining tool of the spindle to remove chips from the cutting portion. Chip removing device of the cutting device according to claim, which relates to.

[0013]

[Function] During the cutting operation, air is blown out from the outlet of the ring nozzle toward the cutting portion of the plate material by the processing tool, and the inside of the chip suction collecting hood is sucked, so that the chips cut by the processing tool are processed. It is blown out to the outside from the inside of the groove and removed by suction at the same time. At this time, since the flexible chip capturing brush is located on the surface of the plate and in the processed groove so as to surround the processing tool, chips are not scattered and deposited on the upper surface of the plate.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

FIG. 4 shows an example of a plate processing machine to which the present invention is applied. The plate processing machine has a projection 9 on which the plate 4 is to be placed. 1
1, a portal-type traveling device 14 including a support leg 12 that can travel in the front-rear direction X along the cross-section 13 and a cross beam 13 disposed between the support legs 12 so as to traverse the surface plate 10 is provided. The cross beam 13 is provided with a header device 16 traversing in the left-right direction Y along the cross beam 13 by the traversing motor 15. Reference numeral 17 denotes an NC control device, and reference numeral 18 denotes an operation panel.

As shown in FIGS. 4 and 5, a traversing table 20 which can traverse in the left-right direction is attached to the cross beam 13 via a plane bearing (LM guide) 19 provided on the front surface of the cross beam 13. A lifting / lowering motor 2 mounted on the traversing table 20 so as to be raised / lowered by a plane bearing 21 and configured to drive the lifting / lowering of the supporting table 22.
3 is fixed to the traversing table 20 via a bracket 24. A spindle support 25 to which the spindle 1 is fixed is mounted on the support base 22 via a flat bearing 26 so as to be able to move up and down, and a spindle feed motor 27 for driving the vertical movement of the spindle support 25 is mounted on the support base 22. It is fixed via a bracket 28.

A lower plate 30 having a hole 29 extending horizontally and fixed to the lower end of the support base 22 and through which the machining tool 3 attached to the chuck 2 of the spindle 1 can pass.
The lower plate 30 is provided with a scanning sensor 31 for detecting an interval S between the lower plate 30 and the upper surface of the plate member 4 and operating the elevating motor 23 to move the support base 22 up and down so that the detected interval S is constant. . A traversing motor 15 is mounted on the traversing table 20, and the pinion 3 of the traversing motor 15 is
2 is engaged with a rack 33 provided on the cross beam 13, so that the entire header device 16 is traversed.

In the above configuration, an upper hood 34 having a cylindrical shape is attached to the spindle support 25 so as to surround the outer periphery of the spindle 1 as shown in FIG. The upper hood 34 has a length that does not hinder the work of attaching and detaching the working tool 3 by the chuck 2. Also, the upper hood 3 is placed on the lower plate 30.
The lower hood 35 corresponding to 4 is attached. The lower hood 35 engages with the upper hood 34 when the spindle 1 is lowered to perform cutting with the processing tool 3 to achieve airtightness inside. When the spindle 1 is raised, the upper hood 34 separates. The upper hood 34 has a length enough to secure an exchange space for the machining tool 3.
And the lower hood 35 constitute a chip suction / collection hood 36.

On the lower side of the lower plate 30, as shown in FIGS. 1 and 2, a flexible chip catcher such as a nylon brush or the like is provided so as to surround the processing tool 3 corresponding to the chip suction catcher hood 36. The brush 37 is attached. In the case shown, the cutting catching brush 37 is doubly arranged. The chip capturing brush 37 is used for cutting the plate material 4 during cutting by the machining tool 3.
It has a length extending so as to be in contact with the upper surface and the cut groove 7, that is, a required length below the tip of the processing tool 3.

A duct 38 is connected to the lower hood 35 of the chip suction / collection hood 36 from a tangential direction as indicated by a hole 39, and the duct 38 is connected to a dust collector 40 provided on the traversing table 20 or the cross beam 13. It is connected to a suction type dust collector 42 composed of a suction machine 41.

When the spindle 1 is lowered and the plate 4 is cut by the machining tool 3, air is directed toward a cutting portion 43 by the machining tool 3 at a position inside the chip catching brush 37 on the lower surface of the lower plate 30. A ring nozzle 44 capable of jetting at high speed is attached. The ring nozzle 44 is
As shown in FIG. 2 and FIG. 3, it has an annular shape, and a plurality of ejection ports 45 are opened on its lower surface in the circumferential direction.
It is connected via a duct 47 to a compressed air source 46 provided on 3. The ring nozzle 44 is provided with a mounting member 48.
Accordingly, the lower plate 30 is replaceably attached to the lower plate 30 with bolts or the like.

Next, the operation will be described.

In the above configuration, when cutting the large thick plate material 4, the traveling of the traveling device 14 and the header device 16
And the spindle 1 is automatically moved up and down by a preset command signal from the NC control device 17, and the machining tool 3 mounted on the spindle 1 is moved in the X, Y, and Z directions in three directions.
It is dimensionally controlled.

At this time, a spacing S between the copying sensor 31 and the upper surface of the plate member 4 is detected by a copying sensor 31 provided on a support base 22 which is attached to the traversing table 20 so as to be able to move up and down. Lifting motor 23 so that S is constant
Is operated to raise and lower the support table 22 along the traverse table 20. Thus, the spindle 1 is controlled in the vertical direction following the irregular bending shape of the plate material 4 irrespective of the NC control.

In the above, the compressed air source 46 is operated to blow air from the outlet 45 of the ring nozzle 44 toward the cutting portion 43 of the plate material 4 by the working tool 3, and the suction type dust collector 42 is operated. And chip suction hood 36
When the inside is sucked, the chips cut by the processing tool 3 are
At the same time as being blown out by compressed air from the inside of the groove 7 being processed, it is removed by the air flow sucked through the chip capturing brush 37 and collected by the dust collector 40. At this time, since the flexible chip capturing brush 37 is located on the surface of the plate member 4 and in the processed groove 7 so as to surround the processing tool 3, the chip is scattered and deposited on the upper surface of the plate member 4. There is nothing. Therefore, since chips do not stay in the groove 7, the large thick plate 4 can be accurately cut by the dry method using the spindle 1, and the processing tool 3
Can be extended, and chips do not accumulate on the plate material 4. Therefore, troublesome work for removing chips can be eliminated, and the copying sensor 31 can surely detect the chips.

Further, the chip suction and collection hood 36 can fit the upper hood 34 and the lower hood 35 at the time of cutting to hermetically surround the outer periphery of the processing tool 3 and raise the spindle 1 to perform the processing. When replacing the tool 3, a required space can be secured between the upper hood 34 and the lower hood 35, and the replacement operation can be performed without any trouble.

In the above-described embodiment, the case where the support table is moved up and down with respect to the traverse table has been exemplified.
It can also be applied to a plate processing machine in which the support base is fixed to the traversing base, that various shapes can be applied to the chip suction and collection hood, grooving and groove processing as well. It goes without saying that various changes can be made without departing from the scope of the present invention.

[0028]

According to the above-described chip removing device of the cutting device of the present invention, at the time of cutting with a machining tool, the compressed air is blown toward the cutting portion to blow out the chips from the groove, and at the same time,
Since suction removal is used, it is possible to prevent chips from staying in the groove, and to cut a large thick plate material accurately by a dry method using a spindle, and to extend the life of a working tool. In addition to this, it is possible to prevent the accumulation of chips on the plate material, to eliminate the operation of chip removal, and to provide excellent effects such as reliable detection by the copying sensor.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of the present invention.

FIG. 2 is an enlarged view of a main part of FIG.

FIG. 3 is a bottom view of the ring nozzle.

FIG. 4 is a perspective view showing an example of a plate processing machine to which the present invention is applied.

FIG. 5 is a side view showing details of the header device of FIG. 4;

FIG. 6 is a perspective view showing a processing state by a conventional spindle.

FIG. 7 is a sectional view of a groove formed on an end face of a plate material.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Spindle 3 Processing tool 4 Plate material 22 Support stand 25 Spindle support 30 Lower plate 31 Copying sensor 34 Upper hood 35 Lower hood 36 Chip suction collecting hood 37 Chip capturing brush 43 Cutting section 44 Ring nozzle 45 Spout

Continuing on the front page (72) Katsumi Kobayashi In the Toji Technical Center, 3-1-1-15 Toyosu, Koto-ku, Tokyo, Japan (56) References JP-A-56-146647 (JP, A) JP-A-2-23739 (JP, A) JP-A-61-65743 (JP, A) JP-A-60-197348 (JP, A) JP-A-1-60844 (JP, U) JP, B2)

Claims (1)

(57) [Scope of request for utility model registration] 1. A support base having a spindle for rotating a processing tool, a spindle support for supporting the spindle, and a scanning sensor for supporting the spindle support movably in a vertical direction and for copying a top surface of a plate material at a lower end. And an upper hood attached to the spindle support so as to surround the outer periphery of the spindle and a lower hood attached to the upper surface of a lower plate integral with the support pedestal so as to be able to be fitted to and separated from the upper hood. A collecting hood, a flexible chip capturing brush attached to the lower side of the lower plate corresponding to the chip suction collecting hood, and a plate material disposed inside the chip capturing brush and processed by the machining tool of the spindle. And a ring nozzle having a plurality of ejection ports for ejecting air toward the cutting portion and removing chips from the cutting portion. Waste removal equipment.