JP2003291136A - Surface processing method for alc panel and surface processing apparatus therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To process the surface part of an ALC panel to form a design recessed part good in appearance having no hollowed-out part. <P>SOLUTION: A non-rotary preceding edge tool 25 is cut in an ALC mother material from the end surface of the ALC panel in parallel to the surface of the panel. This preceding edge tool 25 is constituted so that the panel surface part is cut and crushed by a cutting blade 34, and the cut and crushed pieces of the ALC mother material are scooped by a scooping surface 35 to be scooped up to form a preceding recessed part 5 comprising a cut face groove 6 and a chopped face recessed part 7 in the panel surface. In succession to the preceding edge tool 25, a non-rotary succeeding edge tool 27 is cut in the end surface of the ALC panel, and the preceding recessed part 5 is cut more deeply and widely than the preceding edge tool 25 to form a strip-like design recessed part 3 to the panel surface. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface processing method and a surface processing apparatus for processing a belt-shaped design concave portion on a surface portion of an ALC (lightweight cellular concrete) panel.

[0002]

2. Description of the Related Art As a surface processing method of this kind, according to a prior application by the applicant of the present application (Japanese Patent Laid-Open No. 2001-138320)
Gazette), and as shown in FIG.
ALC from the edge of LC panel 62 parallel to the panel surface
A method is known in which a base material is cut, and a band-shaped design concave portion 65 including a cut surface groove portion 63 having a smooth bottom surface and a side surface and a split stone-like divided skin concave portion 64 is processed on a panel surface portion.

[0003]

However, according to the conventional surface processing method, the cut surface groove portion 63 is formed in a part of the design concave portion 65.
Deeper or the same depth of the engraved portion S may occur. This pavement phenomenon is caused by a physical impact on the ALC base material, which is weak in terms of strength, so that deep cracks widely enter the panel surface portion and the ALC base material is largely crushed. When deeply processed,
Bubbles are likely to occur in places where the bubbles are coarse, where reinforcing bars are unevenly distributed on the panel surface, where the reinforcement bars cross the processed design recesses, and the like. As shown in FIG. 14 (a), the cut-out portion S is formed deeper or at the same depth as the groove bottom of the cut skin groove portion 63 over a wide range over the cut skin groove portion 63 and the split skin concave portions 64 on both sides thereof. As shown in (b), since it is formed deeper than the groove bottom of the cut groove portion 63 or at the same depth only in the split skin concave portions 64 on both sides or one side, the bottom edge of the cut groove portion 63 disappears or becomes unclear. However, there is a problem that the appearance of the design concave portion 65 is deteriorated.

The object of the present invention is to solve the above-mentioned problems and to
It is an object of the present invention to provide a surface processing method and apparatus capable of processing a well-designed recess having a good appearance, which has no engraved portion on the surface of the C panel.

[0005]

A surface processing method for an ALC panel according to the present invention is a method for processing a belt-shaped design recess on a surface portion of an ALC panel, wherein a non-rotating leading blade is used for a small edge of the ALC panel. From the surface to the ALC base material in parallel with the panel surface, and the leading blade cuts the panel surface to form the leading recess, and then the non-rotating trailing blade is cut from the panel edge surface into the leading recess, The trailing blade tool cuts the leading recess deeper than the leading blade tool to form a band-shaped design recess on the panel surface portion.

Here, the shape of the design recess is not particularly limited, and the cut recess having a smooth bottom and side surfaces and the split recess having a split stone pattern which spreads on both sides of the cut recess have a cross section. Examples thereof include those having only U-shaped cut surface groove portions, those having only V-shaped split skin concave portions, and the like.
The shape of the preceding recess may be different from the final shape of the design recess, but when the following cutting tool cuts the preceding recess, the preceding cutting tool substantially resembles the design recess so that no recess is formed. It is preferably formed in a front shape. In particular,
When the design recess is composed of a combination of cut skin groove and split skin recess, the cutting tool groove of the design recess is changed to the cut groove groove of the preceding recess in order to regenerate and continue the cut groove bottom surface and groove side surface. It is desirable to form it wider than.

The number of the subsequent cutting tools is not limited to one, and it is also possible to machine the design concave more deeply by using two or more subsequent cutting tools and sequentially deeply cutting the preceding concave into a plurality of times. . Further, when the preceding cutting tool cuts through from one small edge surface of the ALC panel to the other small edge surface at once, a large defect is likely to occur at the end of the design concave portion. In order to prevent this, it is preferable that the leading blade and the trailing blade cut out from the other panel edge surface to the one panel edge surface after the leading blade tool cuts into one panel edge surface.

The thickness of the ALC panel varies depending on the application, but the thickness of most ALC panels is 35 to 15
In the case of 0 mm, the design concave portion (the depth of the cut surface groove portion when the combination of the cut surface groove portion and the split surface concave portion. The same applies hereinafter) is formed by the preceding concave portion (the combination of the cut surface groove portion and the split surface concave portion). In this case, the depth of the cut surface groove portion. The same applies hereinafter.) It is preferable to form 1 to 10 mm deeper, more preferably 2 to 5 mm deeper. This is because it is possible to form a sharp groove portion having no engraved portion. If the difference in depth is less than 1 mm, if a cutting edge is formed on the leading cutting tool, a sharp groove cannot be formed because the trailing cutting tool cannot cut deeper than that, and if it exceeds 10 mm, There is a risk that a new cutout will be generated in the subsequent cutting tool.

Further, in the case of a thin panel having a thickness of about 35 to 80 mm, the design concave portion is usually processed to a depth of 5 mm or less, so that there is almost no occurrence of the cutout portion. However, in the case of a thick panel with a thickness of 90 to 150 mm, in order to enhance the design effect, the design recess is deeply carved with a depth of 5 mm or more, so the rate of occurrence of the engraved part is approximately proportional to the working depth. Becomes higher. Therefore, for an ALC panel having a thickness of 90 to 150 mm, a method in which the preceding concave portion is formed to a depth of 5 to 15 mm and the designed concave portion is formed to be 2 to 5 mm deeper than the preceding concave portion can be preferably exemplified. Even if the leading edge tool has an engraved part,
This is because the subsequent cutting tool can sufficiently cut the engraved portion so that it does not stand out.

Further, in order to prevent the engraved portion from being generated in the leading cutting tool and the succeeding cutting tool, the leading concave portion is set to 2 to 5 mmm.
It is also preferable to use a method in which the design recess is formed 2 to 5 mm deeper than the preceding recess.

A surface processing apparatus for an ALC panel according to the present invention is an apparatus for processing a belt-shaped design concave portion on the surface portion of an ALC panel, which is a non-rotational preceding type which divides the panel surface portion to form a leading concave portion. A cutting tool, a non-rotating subsequent cutting tool that cuts the preceding recess deeper than the preceding cutting tool, and a mechanism that sequentially cuts the preceding cutting tool and the following cutting tool into the ALC base material parallel to the panel surface from the panel edge surface. Is characterized by.

Here, the preceding cutting tool and the following cutting tool are not limited to particular shapes, and may be in accordance with the shape of the design recess, such as a shoe shape, a beak shape of a sharply protruding bird, a front U-shape, and a front V-shape. The same or similar shapes can be used. In particular, when the design concave portion includes the cut surface groove portion, it is preferable that the cutting edge of the trailing cutting tool is formed to be lower and wider than the cutting blade of the preceding cutting tool so that the cut bottom surface and the groove side surface can be reproduced satisfactorily.

Further, the difference in height between the leading blade and the trailing blade is 1
It is preferably -10 mm, more preferably 2-5 mm. If the height difference is less than 1 mm, if the leading cutting tool has an engraved portion, the trailing cutting tool cannot cut deeper than the engraved portion so that a sharp groove cannot be formed. There is a possibility that a new engraved part may be generated.

Further, two outer cutting tools which are opposite to each other and two inner cutting tools which are opposite to each other are arranged in a line, and each cutting tool is selectively rearranged between a machining position and a standby position. Means may be provided. According to this configuration, the leading blade and the trailing blade can be cut from either of the edge surfaces of the both ends of the panel, so that the method of preventing damage to the end of the design recess can be successfully carried out, and a plurality of designs are provided. It is possible to efficiently reciprocate the concave portion, and it is also possible to process a thin panel in which an engraved portion is less likely to occur by using only the leading blade tool, which improves the mobility of the surface processing apparatus.

The mechanism for cutting the preceding cutting tool and the following cutting tool into the ALC base material is not limited to a specific mechanism. For example, a mechanism for moving the cutting tool when the ALC panel is stopped, or a panel when the cutting tool is stopped. It is possible to employ a mechanism for moving the blade, a mechanism for moving both the blade and the panel in opposite directions.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a panel processing machine 11 for processing the surface portion of an ALC panel 1 in one direction (for example, the vertical direction of a rectangular flat panel). This processing machine 11
Is the processing table 12 on which the ALC panel 1 is placed and the AL
A plurality of surface processing devices 13 (five in FIG. 1 are illustrated) for processing the band-shaped design concave portion 3 in the central portion of the surface of the C panel 1, and A
The LC panel 1 includes two edge processing devices 14 for processing the belt-shaped design portions 4 on both edges of the surface. In addition,
A panel processing machine for processing the panel surface portion in another direction (for example, the horizontal direction of a rectangular flat panel) is configured in the same manner as the vertical processing machine 11, and is installed in the vicinity of this processing machine 11 in a 90 ° different direction. (Not shown).

The processing table 12 is provided with three triangular column-shaped receiving bases 16, and each receiving base 16 is rotatably provided around a horizontal axis 17 by an air cylinder (not shown). Figure 2
As shown in FIG. 4, when processing the flat plate-shaped ALC panel (flat panel) 1, the flat panel 1 is supported with one surface of each pedestal 16 facing upward. As shown in FIG. 3, when processing an ALC panel (corner panel) 2 having a right-angled corner portion, (a) the corner panel 2 is supplied with the top side of one pedestal 16 facing upward, (B) After processing the design recess 3 on one surface portion of the corner panel 2 with one surface of the pedestal 16 facing upward, (c) with the other surface of the pedestal 16 facing upward, The design concave portion 3 can be processed on another surface portion.

The corner panel 2 is processed in the horizontal direction by a panel processing machine 11 for processing the flat panel 1 in the vertical direction and in the vertical direction by a processing machine for processing the flat panel 1 in the horizontal direction. The flat panel 1 and the corner panel 2 are supplied to the processing table 12 by using a clamp transfer device (not shown), and are discharged from the table 12 after processing. The processing table 12 is provided with a ruler (not shown) that abuts the front surface of each of the panels 1 and 2, and a clamper (not shown) that clamps the panels 1 and 2 in a state of abutting the ruler.

As shown in FIGS. 1 and 2, the surface processing apparatus 13 is provided with a vertically long frame 19, and a base 20 and a bracket 21 are fixed to the lower end of the frame 19. A holder 22 is attached to the bracket 21, and four rods 23 are supported by the holder 22 so as to be able to move up and down.
4 are installed. At the lower ends of the two outer rods 23, non-rotating leading blades 25 are bolted in opposite directions (so that their respective cutting edges face outwards on opposite sides).
The non-rotating subsequent cutting tools 27 are attached to the lower ends of the two inner rods 23 by bolts 28 in opposite directions to each other (so that the cutting edges of the cutting edges face the opposite sides). 4 cutting tools 2 at the bottom of 13
5, 27 are arranged in a line in the panel processing direction so as to face outward.

The frame 19 includes a slider 30 and a rail 3.
1 is slidably supported by the traveling machine frame 32 in a direction perpendicular to the machining direction, and the mutual intervals of the surface machining devices 13 can be adjusted according to the machining pitch of the design recesses 3. The traveling machine frame 32 is provided so as to be movable in the processing direction by a driving unit such as a motor or an air cylinder, and is also vertically adjustable by an automatic or manual adjusting unit such as an air cylinder or a screw. These means and the traveling machine frame 32 constitute a mechanism for sequentially cutting the leading blade 25 and the trailing blade 27 from the edge of the panel to the ALC base material in parallel with the panel surface.

The air cylinder 24 provided on the frame 19 constitutes means for selectively relocating the cutting tools 25 and 27 between the processing position and the standby position above it. Then, for example, when performing reciprocating processing, two sets of two cutting tools 25 and 27 are alternately arranged at the processing position, and at the time of one-way processing, four cutting tools 25 and 27 are arranged at the standby position at the standby position for processing. When fast-forwarding to the starting end and returning it, or when processing thin panels that are less likely to have engraved parts, the preceding cutting tool 25
Alternatively, the surface processing apparatus 13 can be controlled with good maneuverability according to a processing program, such as disposing only one of the subsequent cutting tools 27 at the processing position.

As shown in FIG. 4, the leading blade 25 has an L-shape as a whole and a shoe-shaped lower end, and on the front side in the processing direction, the panel surface portion is crushed to form the leading recess 5. The leading blade 25 includes a cutting blade 34 that cuts the ALC base material in a substantially horizontal direction (for example, a rounded tip in a plane) from the leading edge side to both sides, and is inclined so as to become higher toward the rear.
And a rake face 35 for picking up the ALC base material,
According to this blade shape, a cut surface groove portion 6 having a smooth bottom surface and both side surfaces is formed in the preceding recess portion 5, and a split stone-like cut surface recess portion 7 spreading on both sides of the cut surface groove portion 6. For example, when processing the ALC panel 1 having a thickness of 120 mm, the cutting blade 3 of the leading blade 25 is
The cutting depth D1 of 4 is about 12 mm, and the width W1 of the cutting edge 34 is about 8
mm, the angle γ1 of the rake face 35 is about 70 °.

The trailing blade 27 is formed in a shape similar to that of the leading blade 25. By cutting the leading recess 5 deeper and wider than the leading blade 25 on the rear side in the panel processing direction,
A belt-shaped design concave portion 3 is formed on the panel surface portion. The cutting edge 36 and the rake face 37 are also provided on the subsequent cutting tool 27, and the cutting edge 3
6 is formed to be lower and wider than the cutting edge 34 of the preceding cutting tool 25, and according to this blade shape, the bottom surface of the cut surface groove portion 6 is cut deeper and the side surface is cut wider to form the undercut portion formed in the preceding concave portion 5. Can be resolved. For example,
When processing the ALC panel 1 having a thickness of 120 mm, the cutting depth D2 of the cutting blade 36 of the subsequent cutting tool 27 is about 15 mm (the height difference G from the cutting blade 34 of the preceding cutting tool 25 is about 3 mm), The width W2 is about 10 mm and the angle γ2 of the rake face 37 is about 70 °.

As shown in FIGS. 1 and 5, the edge processing device 14 is provided with a vertically long frame 39, and a head 40 is provided at the bottom of the frame 39 with a rail 42 by an air cylinder 41.
It is supported so as to be able to move up and down. A guide 43 is attached to the lower end of the head 40, and a blade 45 for edge processing is supported by the guide 43 via a slider 44 so as to be slidable in a direction perpendicular to the panel processing direction. A blade driving shaft 47 is supported on a side surface of the head 40 by a bearing 46, and an upper end thereof is coupled to a motor 49 via a coupling 48.
The lower end is connected to the base end of the cutting tool 45 via a crank plate 50, a crank pin 51, and a crank arm 52.

The cutting tool 45 is formed in the shape of a square plate, and the cutting edge 54 at the tip is provided with a straight cutting edge 55 and a rake face 56 which are long in the panel processing direction, and the cutting edge 55 is provided with a plurality of V-shaped slits 57. Large and small are provided alternately. And a blade 45
The guide 43 keeps the cutting edge 55 always in parallel with the panel edge, and reciprocates in the direction perpendicular to the panel edge as the motor 49 rotates. Moves to the edge and square, and by this combined operation, the cutting edge 55 is cut into the ALC base material parallel to the panel surface from the edge surface that expands in the processing direction, the panel surface part is crushed, and the cut surface is cut on the panel edge. The band-shaped design portion 4 including the portion 8 and the split skin portion 9 is processed.

In the edge processing device 14, the air cylinder 41 is the air cylinder 24 of the surface processing device 13.
And the blade 45 is moved up and down between the processing position and the standby position. Further, the frame 39 is provided with a screw type adjuster 58 for adjusting the height of the air cylinder 41 by a manual operation, and the height of the cutting tool 45 is adjusted to the cutting tool 2 of the surface processing apparatus 13.
5 and 27, the cut surface portion 8 of the design portion 4 is changed to the design concave portion 3
It is also possible to process at a depth different from that of the cut surface groove portion 6.

The panel processing machine 11 configured as described above
Next, the surface processing method by the surface processing apparatus 13 will be described. ALC panel 1 is processing table 12
When mounted on the top, the drive motor of the traveling machine frame 32, the air cylinder 24 of the surface processing device 13, and the air cylinder 41 of the edge processing device 14 are controlled according to the processing program.

In the surface processing apparatus 13, first, as shown in FIG.
As shown in, in a state in which the leading blade 25 and the trailing blade 27 on one side are arranged at the processing position, the leading blade 25 cuts from one of the front surfaces of the ALC panel 1 into the ALC base material, and cracks the panel surface portion, The opening portion 10 is preliminarily formed on the edge of the panel. In this preliminary step, the cutting length may be short, and the subsequent cutting tool 27 may or may not be cut into the panel 1.

Next, with the four blades 25 and 27 in the standby position, the blades are fast forwarded from one panel edge face to the other panel edge face, and then the leading blade 25 and the trailing edge on the side opposite to the above step. The cutting tool 27 is arranged at the processing position. Then, as shown in FIG. 7, the leading blade 25 cuts into the ALC base material from the other edge of the panel in parallel with the panel surface, the panel surface portion is crushed by the cutting edge 34, and the rake face 35 is used for AL.
The crushed pieces of the C base material are scooped up to form the preceding concave portion 5 including the cut surface groove portion 6 and the split surface concave portion 7 on the panel surface portion.

In the present embodiment, the preceding concave portion 5 has a width of about 8 mm and a depth of about 12 mm (for example, can be changed within a range of 5 to 15 mm) in the ALC panel 1 having a thickness of 120 mm, and the design concave portion 3 which is the final shape. It was formed in a substantially similar shape. When the preceding concave portion 5 is formed to have a depth of 5 mm or more, deep cracks C enter a wide area in the ALC base material at a place where bubbles are rough, and as shown in FIG.
The ALC base material is deeply and crushed by the preceding cutting tool 25,
There may be a case where the engraved portion S is formed in the preceding concave portion 5 deeper or at the same depth as the bottom surface of the cut surface groove portion 6. As mentioned above,
The cut-out portion S is formed over a wide range over the cut surface groove portion 6 of the preceding recessed portion 5 and the split skin concave portions 7 on both sides thereof, or formed only on the split skin concave portions 7 on both sides or one side.

When the preceding cutting tool 25 further cuts, as shown in FIG. 9, the following cutting tool 27 cuts into the preceding recess 5 from the fore edge of the panel, and the cutting recess 36 cuts the preceding recess 5 deeper and wider than the preceding cutting tool 25. Then, the strip-shaped design concave portion 3 is formed on the surface portion of the ALC panel 1. In the present embodiment, the trailing blade 27 cuts the panel surface portion with a width of about 10 mm and a depth of about 15 mm, and forms the design recess 3 about 3 mm deeper than the preceding recess 5 (for example, it can be changed within a range of 2 to 5 mm).

Therefore, as described above, even when the recessed portion S is formed in the leading concave portion 5, as shown in FIG. 10, the recessed portion S is smoothly cut by the subsequent cutting tool 27 and the bottom surface 6a of the cut surface groove portion 6 is formed. Also, by regenerating the side surface 6b, it is possible to form a sharp design concave portion 3 in which the groove bottom edge is continuous in a straight line. Further, since the preceding concave portion 5 is formed in advance in a shape similar to the design concave portion 3, the cutting amount of the subsequent cutting tool 27 becomes very small, and there is a possibility that a cutout portion may be formed in the design concave portion 3 during cutting by the following cutting tool 27. Absent.

After that, the leading blade 25 and the trailing blade 27 are cut out from the other panel edge surface to the one panel edge surface, and the processing is completed. At this time, since the opening portion 10 (see FIG. 6) is formed in advance on one of the panel edge surfaces,
It is possible to prevent the edge of the fore edge from being cut off when the preceding cutting tool 25 cuts out, and as shown in FIG. 11, it is possible to form a good-looking design concave portion 3 having neither a cutout portion nor a cut portion on the panel surface portion. At the edge of the ALC panel 1, the cut surface portion 8 is smoothly cut by the combined operation of the cutting tool 45 in the edge processing device 14, and the split surface portion 9 has a size substantially equal to that of the split surface recess 7. The design portion 4 is formed and processed with a good appearance.

Further, in order to prevent the leading edge 25 and the trailing edge 27 from causing engraved portions, the leading concave portion 5 is formed with a depth of 5 mm (changeable within a range of 2 to 5 mm) and the design concave portion 3 is preceded. It is also possible to adopt a method of forming the groove 5 deeper than the recess 5 (changeable within a range of 2 to 5 mm).

The present invention is not limited to the above-described embodiment, but may be embodied with appropriate modifications within the scope not departing from the spirit of the invention, for example, as follows. (1) The surface processing method of the above embodiment is shown in FIG.
Applying to the LC panel 2 (corner panel), and processing the design recessed portion 3 on the panel surface portion. (2) As shown in FIG. 12, the leading blade 25 and the trailing blade 27 are formed in a protruding bird's beak shape, and the design recess 3 including only the split skin recess 7 is formed on the surface of the ALC panel 1. Also in this case, it is possible to process the sharp and good-looking design concave portion 3 whose bottom edge is continuous. (3) Contrary to the above embodiment, the processing table 12 is provided so as to be movable with respect to the surface processing apparatus 13, and the ALC panel 1 is moved by the processing table 12 to process the panel surface portion.

(4) The processing table 12 is provided so as to be rotatable, and the direction of the ALC panel 1 is changed so that one processing machine 11 is operated.
To process the panel surface vertically and horizontally. (5) The heights of the cutting tools 25 and 27 of the plurality of surface processing devices 13 are individually adjusted and the plurality of design recesses 3 having different depths are processed in the ALC panel 1. (6) Using one surface processing apparatus 13 of the above-mentioned embodiment, this apparatus 13 is reciprocally moved with respect to the ALC panel 1, and the design recess 3 is processed by two cutting tools 25, 27 on one side in the outward path, and then the return path Then, another design concave portion 3 is processed by the two cutting tools 25 and 27 on the opposite side.

[0037]

As described in detail above, according to the surface processing method and apparatus of the present invention, the trailing edge tool cuts the leading recess formed by the leading edge tool deeper than the leading edge tool, so that the surface portion of the ALC panel is engraved. It has an excellent effect that it is possible to process a well-designed recess having no parts.

[Brief description of drawings]

FIG. 1 is a front view showing an ALC panel processing machine according to an embodiment of the present invention.

FIG. 2 II of FIG. 1 showing a surface processing apparatus of a panel processing machine
It is a II sectional view.

FIG. 3 is a side view showing a processing form of a corner panel by a panel processing machine.

FIG. 4 is a shape explanatory view of a leading blade and a trailing blade in the surface processing apparatus.

5 is a view showing an edge processing device of the panel processing machine, which is taken along line V- of FIG.
It is a V line sectional view.

FIG. 6 is a process explanatory view of the surface processing method according to the embodiment of the present invention.

FIG. 7 is a process explanatory diagram that follows FIG.

FIG. 8 is a process explanatory diagram that follows FIG.

FIG. 9 is a process explanatory diagram that follows FIG.

FIG. 10 is an explanatory view of the process following FIG.

FIG. 11 is a partial perspective view of an ALC panel processed by the same method.

FIG. 12 is a partial perspective view of an ALC panel showing a processing method using a cutting tool having a shape different from that of FIG.

FIG. 13 is a partial perspective view of an ALC panel showing a conventional processing method.

[FIG. 14] A showing a design recess processed by a conventional method
It is sectional drawing of an LC panel.

[Explanation of symbols]

1 ALC panel 3 Design recess 5 Leading recess 6 cut surface groove 7 split skin recess 10 Open section 11 panel processing machine 12 Processing table 13 Surface processing equipment 24 air cylinders 25 Cutting tool 27 Subsequent cutting tools 32 traveling machine frame S Egg section

Claims (11)

[Claims] 1. A method of processing a belt-shaped design concave portion on a surface portion of an ALC panel, wherein a non-rotating leading blade is ALC.
Cut the panel edge from parallel to the panel surface into the ALC base material, and cut the non-rotating trailing edge tool from the panel edge to the leading recess after the leading blade breaks the panel surface to form the leading recess. A surface processing method of an ALC panel, characterized in that a trailing cutting tool cuts the preceding recess deeper than the preceding cutting tool to form a band-shaped design recess on the panel surface. 2. The surface treatment of an ALC panel according to claim 1, wherein the strip-shaped design concave portion is formed by a combination of a cut surface groove portion having a smooth bottom surface and a side surface and a split stone-like cut surface concave portion spreading on both sides of the cut surface groove portion. Method. 3. The AL according to claim 2, wherein the trailing cutting tool forms the cut surface groove portion of the design recessed portion wider than the cut surface groove portion of the preceding recessed portion.
Surface treatment method for C panel. 4. The cutting tool according to claim 1, wherein the leading cutting tool and the trailing cutting tool cut out from the other panel edge surface to the one panel edge surface after the leading cutting tool cuts into one panel edge surface. Surface processing method of ALC panel. 5. The ALC according to claim 1, wherein the design recess is formed 1 to 10 mm deeper than the preceding recess.
Panel surface processing method. 6. An ALC panel having a thickness of 90 to 150 mm,
The surface processing method for an ALC panel according to claim 1, wherein the preceding recess is formed to have a depth of 5 to 15 mm, and the design recess is formed to be 2 to 5 mm deeper than the preceding recess. 7. The preceding recess is formed to have a depth of 2 to 5 mm,
The surface processing method for an ALC panel according to claim 1, wherein the design recess is formed 2 to 5 mm deeper than the preceding recess. 8. An apparatus for processing a belt-shaped design concave portion on a surface portion of an ALC panel, which comprises a non-rotating leading blade for breaking the panel surface portion to form a leading concave portion, and a leading concave portion more than the leading blade. A non-rotating subsequent cutting tool for deep cutting, and a mechanism for sequentially cutting the preceding cutting tool and the following cutting tool into the ALC base material parallel to the panel surface from the front edge of the panel . 9. The surface processing apparatus for an ALC panel according to claim 8, wherein the cutting edge of the subsequent cutting tool is formed to be lower and wider than the cutting edge of the preceding cutting tool. 10. The height difference between the leading blade and the trailing blade is 1 to
The surface processing apparatus for an ALC panel according to claim 9, which has a length of 10 mm. 11. A pair of two outer cutting tools, which are opposite to each other, and two inner cutting tools, which are opposite to each other, are arranged side by side in a row, and each cutting tool is selectively rearranged between a machining position and a standby position. The surface processing apparatus for an ALC panel according to claim 8, further comprising a means.