JP3669948B2 - Surface processing method and surface processing apparatus for ALC panel - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a surface processing method and a surface processing apparatus for an ALC (lightweight cellular concrete) panel.
[0002]
[Prior art]
Conventionally, in order to improve the design of ALC panels, it has been widely performed to cut straight grooves on the panel surface. The cutting method uses a rotary cutting blade that is driven to rotate about an axis that is perpendicular to the panel surface, and moves the rotary cutting blade or the ALC panel relative to the panel surface direction. Is applied to the predetermined depth of the panel surface portion from the small edge surface of the ALC panel. However, the design by this linear groove was simple and poorly changed.
[0003]
Therefore, as one of the means for further improving the designability, it is conceivable to apply the design of the split skin surface of the stone-cut tone widely used for concrete panels and sizing boards to ALC panels. That is, after forming a straight groove on the ALC panel, for example, as described in Japanese Patent Application Laid-Open No. 55-113514, a ridge is formed by colliding a split blade body with a ridge arranged in a concrete block. By smashing the blade with all or part of the ridges of the concrete block in which ridges and grooves are alternately arranged, as described in Japanese Patent Application Laid-Open No. 49-63214. If the cracking technique is applied and the ridges between the grooves are broken, the ALC panel is easier to break than the concrete panel, so that it is possible to easily form a stone-cut surface.
[0004]
[Problems to be solved by the invention]
However, the method of crushing the ridges after forming the grooves in this way has the following problems.
(1) If the groove is not formed in the panel surface portion of the ALC panel in advance, the split skin surface cannot be formed. As described above, the groove is formed by a cutting method using a rotary cutting blade.
{Circle around (2)} Two systems, a device for forming a groove and a device for forming a split skin surface, are required, which is not economical because of initial costs and running costs.
(3) When the number of devices is two, each device needs to be adjusted and the productivity is not good.
(4) Since physical impact is given to the ridges of the ALC panel, which is brittle in strength, cracks occur in the direction from the bottom or side of the groove toward the inside of the panel, and the durability of the panel surface decreases and the panel strength There is concern over the occurrence of local physical defects that lead to a decline in
[0005]
SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and to provide a surface processing method and a surface of an ALC panel that can efficiently form a design recess extending in a strip shape on the panel surface of the ALC panel without causing physical defects. The object is to provide a processing apparatus, and in particular to provide the most efficient method and apparatus capable of simultaneously forming a design recess comprising a cut groove and a split skin recess with a set of devices.
[0006]
[Means for Solving the Problems]
The surface processing method for an ALC panel according to the present invention includes a surface processing tool or an ALC panel parallel to the panel surface in a state where a non-rotation driven surface processing tool is bitten into a predetermined depth of the panel surface portion of the ALC panel. By moving relatively in the direction, a design recess extending in a strip shape is formed on the surface of the panel.
Specifically, by moving the surface processing tool or the ALC panel relatively in a direction parallel to the panel surface in a state where the non-rotating drive type surface processing tool is bitten into a predetermined depth of the panel surface portion of the ALC panel. A crack is formed in the shear surface of the ALC base material generated in a substantially elliptical shape around the cutting edge of the surface processing tool when viewed from the plane, and the ALC base material separated into a substantially elliptical shape by the crack is lifted as a split piece. By forming a split skin recess in the panel surface portion and repeating the formation of the next split skin recess in the same manner, a design recess extending in a strip shape including the split skin recess is formed in the panel surface portion.
[0007]
In the same method, a preceding groove can be formed in advance at a position where the design recess is to be formed. Although the preceding grooving tool is not particularly limited, a disk-shaped rotary blade can be exemplified.
[0008]
A surface processing apparatus for an ALC panel according to the present invention is a surface processing apparatus for forming a design concave portion extending in a strip shape on a panel surface portion of an ALC panel, wherein the surface processing tool is a non-rotating drive type surface processing tool, And a mechanism for moving the surface processing tool or the ALC panel relatively in a direction parallel to the panel surface in a state where the surface processing tool or the ALC panel is bitten to a predetermined depth of the surface portion.
Specifically, it is a surface processing apparatus for forming a design concave portion extending in a strip shape including a split skin concave portion on a panel surface portion of an ALC panel, the surface processing tool being a non-rotation driven type, and the surface processing tool on a predetermined surface of the panel surface portion. A mechanism for moving the surface processing tool or ALC panel relatively in a direction parallel to the panel surface in a state where the surface processing tool is in the depth, and the surface processing tool applies a scooping force to the cutting edge and the ALC base material. A rake face to be cut, and a lifting part that lifts the ALC base material separated into a plane substantially elliptical shape by the crack as a cracked piece while making a crack in the shearing surface of the ALC base material generated in a substantially elliptical shape around the cutting edge. ing.
[0009]
In the apparatus, a preceding groove cutting tool for forming a preceding groove in advance at a position where the design recess is to be formed may be provided. Although the preceding grooving tool is not particularly limited, a disk-shaped rotary blade can be exemplified.
[0010]
Although it is preferable that the surface processing tool bite into the predetermined depth of the panel surface portion from the edge surface of the ALC panel, the surface processing tool can also bite into the predetermined depth of the panel surface portion from the surface of the ALC panel.
[0011]
The following (1) and (3) can be exemplified as the design concave portion extending in a band shape. (2) is a reference example. In addition, although the aspect extended in strip | belt may be linear or curvilinear, extending 200 mm or more is preferable on processing efficiency and design.
[0012]
(1) The cut groove and the cut grooveBoth sidesCombination with split skin recess
  The “cut skin groove portion” refers to a groove portion that shows a smooth cut surface without uneven roughness, and the “cut skin recess portion” refers to a recess portion that shows a chopped stone-like split skin surface with uneven roughness.
  Although it does not specifically limit as a surface processing tool used in this case, The cutting edge which makes the front shape substantially equal to the width direction shape of the bottom face of the cut-skin groove part to form, and the rake surface which makes scooping force act on ALC base material, A tool provided with a side portion of a tool side portion that forms an edge of the bottom surface of the cut groove portion can be exemplified.
  The rake face may be provided straight in the width direction, but is preferably provided so as to be inclined downward from the center in the width direction to the left and right sides.
  Furthermore, it is preferable that the surface processing tool includes a lifting portion higher than the rake face in the middle or the end of the rake face. It is preferable that at least the foremost part of the lifting portion has a sharp ridgeline.
  The cut groove portion is composed of the inner surface of the cut skin and the bottom surface of the cut skin.In order toThe side portion may be a surface having a height.
  The cut skin groove portion is substantially free from the inner surface of the cut skin and consists only of the bottom surface of the cut skin.In order toIt is preferable that the side portion has substantially no height. In the present specification, only the bottom surface of the cut skin that does not have the inner side surface of the cut skin and therefore follows the split skin concave portion is included in the category of the “cut skin groove portion”.
  The shapes of the cutting blade, the rake face, and the side portion are not particularly limited, and examples of the shape having a substantially beak shape can be given.
[0013]
(2) Cut groove
Although it does not specifically limit as a surface processing tool used in this case, The thing provided with the cutting blade which makes the front shape substantially equal to the cross-sectional shape of the cut-skin groove part to form can be illustrated.
Although the front shape of a cutting blade is not specifically limited, A substantially U shape, a substantially U shape, or a substantially V shape can be illustrated. However, a shape having a smaller width toward the bottom side of the cut groove portion is preferable. It is preferable that the upper end of the cutting edge protrudes above the panel surface when the surface processing tool is bitten into a predetermined depth of the panel surface portion. This is because the panel surface portion at the upper edge of the cut groove portion is not easily chipped.
The surface processing tool preferably has a rake face following the cutting edge.
[0014]
(3) Split skin recess
The surface processing tool used in this case is not particularly limited, but has a cutting edge with a narrow tip so as not to form a cut groove, and a rake face for applying a scooping force to the ALC base material. Can be illustrated. The side part which forms the edge of the bottom face of the cut groove part like said (1) is not provided.
[0015]
  Another surface processing method for an ALC panel according to the present invention is a surface processing tool or an ALC panel in a state in which a non-rotation driven surface processing tool is bitten to a predetermined depth of the panel surface portion of the panel edge of the ALC panel. Is relatively moved in a direction parallel to the surface of the panel, and a crack is formed in the shear surface of the ALC base material generated in a substantially triangular or semi-elliptical shape around the cutting edge of the surface processing tool as viewed from above, The ALC base material separated into a substantially triangular shape or a semi-elliptical shape by a crack is lifted as a split piece to form a split skin recess in the panel surface, and the formation of the next split skin recess is repeated in the same manner, The design recessed part extended in the strip | belt shape containing the said split skin recessed part is formed in a part.
  As a design recessed part extended in strip | belt shape, the combination of the cut-skin groove part and the said split skin recessed part formed in one side of this cut-skin groove part can be illustrated.
  In addition,Each of the aboveThe processing speed (feed speed of the surface processing tool) in the present invention is not particularly limited, but is preferably 0.6 to 5.0 m / min, and more preferably 0.8 to 3.0 m / min. If it is less than 0.6 m / min, it is not efficient in production, and if it exceeds 5.0 m / min, the energy efficiency is remarkably lowered.
[0016]
The relative movement direction of the surface processing tool or the ALC panel is preferably opposite to the foaming direction when the ALC panel is manufactured. This is because the split skin recess is not affected by the roughness of the bubbles in the ALC panel and is not cracked too much. In general, when the ALC panel expands, bubbles tend to be coarse at the top of the slurry.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
[First embodiment]
1 to 12 show a first embodiment. As shown in FIGS. 1 to 4, etc., the surface processing apparatus for the ALC panel according to the present embodiment includes a base 10, a tool moving device 20, a leading grooving tool 30, non-rotation driven surface processing tools 40, 50, Each of these mechanisms will be described in turn. In addition, although the surface processing apparatus of the example of illustration has illustrated the small-sized and simple thing for the simplification of illustration and description, of course, it can also be changed into the large-scale structure suitable for mass production. A modification example will be described later.
[0018]
The base 10 includes legs 11 and a table 12, and the ALC panel 1 is horizontally placed on the upper surface of the table 12 with the panel surface portion 2 facing upward. The table 12 is provided with a ruler 13 that contacts the panel edge 3 of the ALC panel 1, and a clamper (not shown) that clamps the ALC panel 1 while being applied to the ruler 13.
[0019]
The tool moving mechanism 20 includes a bridge 21 provided on the base 2, a horizontally extending guide bar 22 installed on the bridge 21, and a movable platen 24 slidably attached to the guide bar 22 via a slider 23. And a drive mechanism for the movable platen 24. The movable platen 24 includes a leading groove cutting blade support 24a on the front end side (right end side in FIG. 2) and a surface machining blade support portion 24b on the rear end side (left end side in FIG. 2). The drive mechanism of the movable platen 24 includes a screw screw 25 that is rotatably supported in the bridge 21, a female screw member 26 that is attached to the movable platen 24 and screwed into the screw screw 25, and a motor 27 that rotates the screw screw 25. Become.
[0020]
The leading groove cutting tool 30 includes a leading groove cutting edge 31 and a fixture 32 for pivotally mounting the leading groove cutting edge 31 rotatably. The leading groove cutting edge 31 is a disk-shaped thing provided with the edge of the outer periphery sharpened to V-shaped cross section, and the diameter is 50-200 mm, for example. The fixture 32 is attached to the support portion 24a by a screw 34 passed through the elongated hole 33 so that the vertical position can be adjusted. By adjusting the vertical position, the depth of the leading groove cutting edge 31 to the panel surface described later can be adjusted. It has become.
[0021]
As the non-rotation driven surface processing tools 40, 50, 60, 70, the following first to fourth embodiments were implemented. Any of the surface processing tools 40, 50, 60, 70 is attached to the support portion 24a in a supported portion 43 fixed to the upper surface of the shank 42, 52, 62, 72 in a replaceable manner with screws.
[0022]
(I) Surface processing tool 40 of the first embodiment for simultaneously forming a cut-skin groove and a split-skin recess on the panel surface at the center of the panel
The surface processing tool 40 of the first embodiment shown in FIGS. 2 and 3 includes a blade portion 41 at the tip, a shank 42 that supports the blade portion 41, and a supported portion 43 that is fixed to the upper surface of the shank 42. The blade portion 41 and the shank 42 in the illustrated example are integrally formed from a square bar-shaped tool steel material having a height of about 25 mm, a width of about 9 mm, and an arbitrary length, either mechanically fixed or brazed. Good. The shank 42 remains the size of the tool steel material, and the blade portion 41 is obtained by processing the tool steel material so as to include the following elements (1) to (5).
[0023]
(1) Cutting blade A having a substantially arcuate blade width of about 9 mm at the tip and bottom ends of tool steel
The front shape of the cutting edge A is substantially the same as the shape in the width direction of the bottom surface of the cut groove portion 4 to be formed. In this embodiment, the flat cut groove portion 4 is formed, so the front shape of the cutting edge A is a straight line. .
(2) Rake face B inclined upwards from the cutting edge A at an inclination angle β of about 10 degrees (rake angle of about 80 degrees)
The rake face B may be straight in the blade width direction, but in this embodiment, the rake face B is inclined downward from the center in the width direction to the left and right sides.
(3) A lifting portion C provided higher than the rake surface B in the middle in the width direction from the middle of the rake surface B (in this embodiment, heading obliquely rearward and upward with a lifting angle γ greater than the inclination angle β).
The lifting portion C has a triangular shape with a lifting angle γ of about 15 degrees from the center of the cutting edge A to the point of about 2.5 mm from the center back to the point of about 5 mm back (the ridgeline is sharp). ) And a trapezoidal cross section with a gradually increasing upward angle γ from about 15 degrees to about 40 degrees from the rear end point of the foremost part C1 to the upper surface of the tool steel (the ridgeline is narrow) And the remaining portion C2.
An intersection line between the lower end of the lifting portion C and the rake face B forms an opening angle δ backward as viewed from the plane.
(4) Side D on both sides of the tool starting from the rear edge of cutting edge A
The tip side of the side portion D is in a sharp state (almost no height) continuously from the cutting edge A, but gradually rises (for example, up to about 2 mm) to form a surface as it goes back to the rear side. ing. This surface may be a vertical surface, but in the illustrated example, it is an inclined surface that is slightly inclined inward from the lower end toward both side edges of the rake surface B above it.
(5) Relief recess E, which is swept upward by about 1.5 mm from the position of about 25 mm backward from the cutting edge A to the entire rear area on the lower surface of the tool steel material
[0024]
(II) Surface processing tool 50 of the second embodiment for simultaneously forming a cut-skin groove and a split skin recess in the panel surface portion of the panel edge.
The surface processing tool 50 of the second embodiment shown in FIG. 10 includes a blade portion 51 at the tip, a shank 52 that supports the blade portion 51, and a supported portion that is fixed to the upper surface of the shank 52 (the one of the first embodiment). Similarly, it is not shown). The blade portion 51 and the shank 52 in the illustrated example are integrally formed from a square bar-shaped tool steel material having a height of about 8 mm, a width of about 8 mm, and any length, either mechanically fixed or brazed. Good. The shank 52 remains the size of the tool steel material, and the blade portion 51 is obtained by processing the tool steel material so as to include the following elements (1) to (7).
[0025]
(1) No. 1 blade H with a blade width of about 3.5 mm provided at the tip and bottom ends on the outer side in the width direction of the tool steel (right side in FIG. 10)
(2) First rake face I heading diagonally backward and upward from the first blade H at an inclination angle η of about 15 degrees (rake angle of about 75 degrees)
(3) A first lifting portion J which is inclined upward and rearward at a lifting angle θ of about 70 degrees from the end of the first rake face I
The first lifting portion J is an inclined surface that ends from the end of the first blade H to the upper surface of the tool steel material at a position about 5 mm backward.
(4) The second cutting edge K heading obliquely rearward at a cutting edge angle ι of about 57 degrees from the inner edge of the first cutting edge H at the lower end on the inner side in the width direction of the tool steel (left side in FIG. 10).
(5) The second rake face L which is inclined rearward and upward at an inclination angle κ of about 15 degrees (rake angle of about 75 degrees) from the second cutting edge K
(6) A second lifting portion M that is inclined upward and rearward at a lifting angle λ of about 70 degrees from the end of the second rake face L
The second lifting portion M is an inclined surface that ends from the inner edge of the upper edge of the first lifting portion J back to the upper surface of the tool steel material up to about 17 mm.
(7) Side N of the tool inner side starting from the rear end of the second cutting edge K
The front end side of the side portion N is in a sharp state (having almost no height) continuously with the second cutting edge K, but gradually increases toward the rear side to form a surface. This plane is a vertical plane.
[0026]
(III) Surface processing tool 60 of the third embodiment for forming a cut groove in the panel surface at the center of the panel
The surface processing tool 60 of the third embodiment shown in FIG. 14 includes a blade portion 61 at the tip, a shank 62 that supports the blade portion 61, and a supported portion that is fixed to the upper surface of the shank 62 (the one of the first embodiment). Similarly, it is not shown). The blade portion 61 and the shank 62 in the illustrated example are mechanically fixed, but may be brazed or integrally formed. The blade portion 61 is formed by machining a horizontal portion of an L-shaped tool steel material having a height of about 7 mm and a width of about 18 mm so as to include the following elements (1) to (4).
[0027]
(1) A pair of cutting blades P for the groove inner side, which is slanted rearward at a cutting edge angle π of about 40 degrees from the upper end to the lower end at both ends of the tool steel in the width direction.
(2) A pair of rake faces Q inclined inward and rearward at an inclination angle ρ of about 10 degrees (rake angle of about 80 degrees) from each groove inner cutting edge P
(3) Groove bottom cutting edge R having a concave arc shape of about 11 mm in width so as to connect the lower ends of the groove inner cutting edges P at the lower end of the tool steel.
(4) Rake face S inclined obliquely upward from the groove bottom cutting edge R at an inclination angle σ of about 20 degrees (rake angle of about 70 degrees)
[0028]
The front shape formed by the pair of groove inner cutting edges P and the groove bottom cutting edge R is substantially the same as the cross-sectional shape of the cut groove groove 4 to be formed, and in this embodiment, a rectangular cut groove groove 4 is formed. Therefore, the front shape of the cutting blades P and R is an upwardly extending rectangular shape.
[0029]
(IV) Surface processing tool 70 of the fourth embodiment for forming a split skin recess in the panel surface portion at the center of the panel
The surface processing tool 70 of the fourth embodiment shown in FIG. 17 includes a tip blade portion 71, a shank 72 that supports the blade portion 71, and a supported portion (the one of the first embodiment) fixed to the upper surface of the shank 72. Similarly, it is not shown). The blade portion 71 and the shank 72 in the illustrated example are integrally formed from a square bar-shaped tool steel material having a height of about 18 mm, a width of about 10 mm, and any length, either mechanically fixed or brazed. Good. The blade portion 71 is obtained by processing a tool steel material so as to include the following elements (1) to (5).
[0030]
(1) Cutting edge T with a narrow tip so as not to form a cut groove
(2) A rake face U inclined obliquely upward from the cutting edge T at an inclination angle τ of about 20 degrees (rake angle of about 70 degrees)
The rake face U is straight in the width direction of the blade, but may be inclined obliquely from the center in the width direction to the left and right sides as in the first embodiment.
(3) A lifting portion V provided higher than the rake surface U in the middle in the width direction from the middle of the rake surface U (in this embodiment, heading obliquely rearward and upward with a lifting angle υ greater than the inclination angle τ).
The lifting portion V starts from a point of about 5 mm from the center of the cutting edge T to the back, and the lifting angle υ is about 30 degrees.
▲ 4 ▼ Flank W from the cutting edge A toward the upper back diagonally with a clearance angle of about 10 degrees
The left and right sides of the tool only pass through the space after the formation of the split skin recess, and do not function as side portions that form the edge of the bottom surface of the cut groove portion as in the first embodiment.
[0031]
Now, a method for forming a design recess extending in a strip shape on the panel surface portion of the ALC panel 1 using the surface processing apparatus configured as described above will be described in the order of steps.
[0032]
(0) ALC panel set
FIG. 1 shows an initial state. An ALC panel 1 is horizontally placed on the upper surface of a table 12 with the panel surface portion 2 facing upward, and the ALC panel 1 is positioned against a ruler 13 and positioned with a clamper. Clamp. At this time, the preceding grooving tool 30 and the surface machining tool 40 are retracted to the rear side from the ALC panel 1.
Next, (1) While simultaneously forming a cut skin groove and a split skin recess in the panel surface portion at the center of the panel, and (2) a cut skin groove and a split skin recess in the panel surface portion of the panel edge. Are formed simultaneously. (1) The order of (2) may be performed first or alternately.
Alternatively, instead of (1) and (2), (3) a cut groove is formed in the panel center portion and the panel surface portion of the panel edge.
Further, (4) Instead of (2), (4) a split skin recess is formed in the panel surface portion at the center of the panel.
In addition, the processing speed (feed speed of the surface processing tool) is not particularly limited, but is, for example, 1.2 m / min.
[0033]
(1) Process for simultaneously forming a cut-slot groove and a split-skin recess on the panel surface at the center of the panel The surface machining tool 40 of the first embodiment is used, but the leading groove cutting tool 30 is used and not used. Since there are cases (that is, a case where the preceding groove is not pre-formed at the position where the cut groove portion is to be formed), both cases will be described.
[0034]
(1-1) When the preceding groove is not pre-formed
First, a case where the preceding groove is not preformed will be described. For this purpose, the leading groove cutting blade 31 is raised to a height that does not touch the panel surface portion 2 or removed together with the leading groove cutting tool 30 so that it does not act on the panel surface portion.
[0035]
When the movable platen 24 is moved forward by the drive mechanism and moved in a direction parallel to the panel surface, the cutting edge A of the blade portion 41 of the surface processing tool 40 is moved to the ALC panel 1 as shown in FIGS. The cut surface 3 cuts into the predetermined depth of the panel surface portion 2 and starts to cut the bottom surface 4a of the cut surface groove portion 4, and the side portion D crushes the ALC base material, thereby cutting the cut surface groove portion 4 The inner surface 4b of the cut skin is formed. The depth of the bite is not particularly limited, but for example, 8 mm. The width of the bottom surface 4a is not particularly limited, but is about 9 mm when the surface processing tool 40 of the first embodiment is used. The height of the inner side surface 4b is determined by the surface height of the side portion D and is not particularly limited. However, since the surface height of the side portion D in the first embodiment is gradually increased from 0 to about 2 mm, The height of the side surface 4b is 0.5 to 2 mm. The scooping force Fb acts on the ALC base material 5 above the scoop surface B by this biting.
[0036]
4 (b1) and 4 (b2), when the foremost portion C1 and the remaining portion C2 of the lifting portion C higher than the rake face B bite into the panel surface portion 2 in sequence, the lifting force Fc acts on the ALC base material 5. At first, the lifting force Fc becomes more dominant than the scooping force Fb. Then, when the lifting force Fc exceeds the tensile strength of the ALC base material 5, the ALC base material generated in a substantially oval shape (the size and shape vary) around the cutting edge A as seen from the plane. The crack 6 enters the shear surface of 5. At this time, the formation of the cut groove portion 4 is in progress.
[0037]
4 (c1) and 4 (c2), when the lifting portion C further bites in, the ALC base material 5 separated into a plane substantially elliptical shape by the crack 6 is lifted as a split piece 7, and the panel surface portion 2 is lifted. A split skin recess 8 is formed. Further, the cutting edge A, the rake face B, and the lifting portion C continuously form the cut groove portion 4, and at the same time, repeat the formation of the next split skin concave portion as described above. In addition, since the escape recess E is provided on the lower surface of the blade portion 41, the contact surface between the lower surface and the bottom surface of the cut groove portion 4 is small and the friction is small, so that the processing efficiency is improved.
[0038]
By repeating the above operation, as shown in FIG. 5, the cut groove portion 4 and the split skin recess portion 8 can be simultaneously formed in the panel surface portion 2 at the center portion of the ALC panel 1.
In the surface processing tool 40 of the first embodiment,
(1) The rake face B of the blade part 41 is inclined downward from the center to the left and right sides, so that the rake force Fa is distributed to the left and right.
(2) By providing the lifting part C higher than the rake face B at the center in the blade width direction, when the lifting part C is applied from the rake face B to the lifting part C, the lifting force Fc is applied suddenly.
The split skin recess 8 can be efficiently formed (this effect is also obtained in either one of (1) and (2)).
Furthermore, since the forefront portion C1 of the lifting portion C has a triangular shape with a sharp ridgeline, the formation of the crack 6 is facilitated. However, the portion where the base material strength is low is cracked before the crack is formed.
Moreover, the split skin recessed part 8 formed had the tendency to make upward R shape, and brought the result favorable on an external appearance.
[0039]
Next, four modification examples in which the shape and dimensions of the surface processing tool 40 of the first embodiment were changed were created, and the cut groove portion 4 and the split skin recess portion 8 were simultaneously formed in the same manner as described above. .
[0040]
(1) Modification 1 shown in FIG.
In this example, the length of the rake face B and the lifting portion C is shortened and the inclination angle of the rake face B descending to the left and right sides is increased. According to this example, the amount of one-time cracking was reduced, and the size of the split skin recess by one piece was reduced in both crack length and width. This is considered to be due to excessive dispersion of the scooping force and lifting force in the left and right side directions. Moreover, the split skin recessed part formed had the tendency to make upward R shape, and brought the result favorable on an external appearance.
Moreover, since the cutting edge 44 for finishing the bottom surface of the cut groove portion is provided on the lower surface of the shank 42, the bottom surface of the cut groove portion can be finished more beautifully.
[0041]
(2) Modification 2 shown in FIG. 6 (b)
This is an example in which the widths of the cutting edge A and the rake face B are reduced. According to this example, the variation in the amount of one-time cracking increased, and the change in the crack width also increased. Moreover, the split skin recessed part 8 formed had the tendency to make downward R shape.
[0042]
(3) Modification 3 shown in FIGS. 7 (a1) and (a2)
This is an example in which the lifting portion C of the surface machining tool 40 of the first embodiment is retracted to increase the inclination angle of the rake face B that falls to the left and right sides. According to this example, the amount of one-time cracking decreased, and the crack length and crack width both decreased. This is considered to be due to excessive dispersion of the scooping force and lifting force in the left and right side directions. Moreover, the split skin recessed part formed had the tendency to make upward R shape, and brought the result favorable on an external appearance.
[0043]
(4) Modification 4 shown in FIGS. 7 (b1) and (b2)
In this example, the rake face B and the lifting portion C are shortened, and the rake face B is shortened to widen the opening angle δ. According to this example, the amount of one-time cracking decreased, and the crack length and crack width both decreased. This is considered to be due to excessive dispersion of the scooping force and lifting force in the left and right side directions. Moreover, the split skin recessed part formed had the tendency to make upward R shape, and brought the result favorable on an external appearance.
[0044]
(1-2) When the preceding groove is formed in advance
Next, a case where a preceding groove is formed in advance at a position where the cut groove portion is to be formed will be described. For this purpose, the position of the leading groove cutting edge 31 is adjusted so as to bite into the panel surface portion 2 by a predetermined depth so as to act on the surface processing tool 40 on the panel surface portion 2. In addition, description is simplified about the part which is common in the example of FIG.
[0045]
When the movable platen 24 is moved forward by the drive mechanism and moved in a direction parallel to the panel surface, as shown in FIG. 2, the leading groove cutting blade 31 hits the panel surface portion 2 to rotate the panel surface portion passively. The leading groove 9 having a predetermined depth is formed. Although this depth is not specifically limited, For example, it was 5 mm. The opening width of the leading groove 9 is not particularly limited, but is preferably smaller than the opening width of the cut groove portion, and is about 3 mm here.
[0046]
Subsequently, as shown in FIGS. 8A1 and 8A2, the cutting edge A of the blade portion 41 of the surface processing tool 40 has a predetermined depth from the small edge surface 3 of the ALC panel 1 to the panel surface portion 2 (example of FIG. 4). As in the example of FIG. 4, the bottom surface 4 a of the cut groove portion 4 starts to be cut and the side portion D forms the inner side surface 4 b of the cut groove portion 4. At the same time, the scooping force Fb acts on the ALC base material 5 as in the example of FIG.
[0047]
As shown in FIGS. 8B1 and 8B2, when the lifting portion C bites into the panel surface portion 2, the lifting force Fc starts to act, and the lifting force Fc becomes more dominant than the scooping force Fb. Then, when the lifting force Fc exceeds the tensile strength of the ALC base material 5, a crack 6 enters the shear surface of the ALC base material 5 generated around the cutting edge A. 8 (c1) and 8 (c2), when the lifting portion C further bites in, the ALC base material 5 separated by the crack 6 is lifted as a split piece 7, and the panel surface portion 2 has a split skin recess. 8 is formed. At this time, since the preceding groove 9 is formed in advance, compared to the example of FIG. 4 in which the preceding groove 9 is not formed in advance, the breaking pieces 7 are formed separately on the left and right sides with the preceding groove 9 as a boundary. Even when the split pieces 7 were added and compared, as shown in FIG. 9, the amount of one-time cracking decreased, and the crack length and crack width also decreased.
[0048]
Further, when the depth of the leading groove 9 was changed to 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, and 7 mm and the same processing was performed, when the depth was 2 mm and 3 mm, the left and right split pieces 7 were The amount of cracks, the length of cracks, and the width of cracks when added were not much different from the example of FIG. 4 in which the preceding groove 9 was not formed in advance, but when the depth becomes 4 mm or more, the amount of cracks gradually increases as the depth increases. The crack length / crack width is smaller than that of the example of FIG. 4. For example, when the depth is 6 mm, the crack length / crack width is about half that of the example of FIG. 4.
[0049]
For this reason, if the depth of the leading groove 9 is set to 1/2 or more of the depth of the cut groove 4, the amount of cracks, crack length and crack width can be controlled, and the depth becomes deeper than 1/2. It was found that the crack amount, crack length, and crack width can be reduced as much as possible. Considering the reason, when the ratio is 1/2 or more, the scoring force Fb and the lifting force Fc applied to the ALC base material 5 by the surface processing tool 40 cause cracks from the previously formed preceding groove 9, This is considered to be due to the occurrence of cracking earlier than in the case where there is no preceding groove 9.
[0050]
As the above application, the crack amount, the crack length, and the crack width are varied depending on the position by changing the depth of the preceding groove 9 during the formation of the single cut groove 4 and the split skin recess 8. You can also.
[0051]
In addition, by forming the leading groove 9 in advance, it is possible to eliminate the problem that the groove bottom is excessively deeply lost when the terminal portion of the cut groove portion 4 is formed.
[0052]
(2) A step of simultaneously forming a cut-skin groove and a split skin recess in the panel surface portion of the panel edge.
The surface processing tool 50 of the second embodiment is used. The leading grooving tool 30 is not used in principle (that is, the leading groove is not preformed), but may be used (that is, the leading groove may be preformed).
[0053]
When the movable platen 24 is moved forward by the drive mechanism and moved in a direction parallel to the panel surface, the first blade H of the blade portion 51 of the surface processing tool 50 is first moved as shown in FIGS. 11 (a1) and (a2). The ALC panel 1 bites into a predetermined depth (for example, 8 mm) of the panel surface portion 2 from the small edge surface 3, and then the second cutting edge K bites into and starts cutting the bottom surface 4 a of the cut groove portion 4. Then, as shown in FIGS. 11 (b1) and (b2), when the second cutting edge K finishes biting and the side portion N starts to bite, the side portion N crushes the ALC base material to cause the inside of the cut groove portion 4 Side surface 4b is formed.
[0054]
When the first blade H bites in as described above, a scooping force Fi acts on the ALC base material 5 above the first scoop surface I, and then the lift force Fj on the ALC base material 5 from the first lifting portion J. Works.
[0055]
Further, when the second cutting edge K bites in as described above, first, the lifting force Fm from the second lifting portion M to the ALC base material 5 with a gentle inclination with respect to the horizontal direction obliquely upward and toward the inside of the panel. Next, a scooping force Fl is applied to the ALC base material 5 from the second rake face L to the ALC base material 5 with a steep inclination with respect to the horizontal direction and obliquely upward and inward of the panel. When the resultant force of the lifting force Fm and the scooping force Fl exceeds the tensile strength of the ALC base material 5, a substantially triangular or semi-elliptical shape (its size and shape) around the cutting edges H and K when viewed from above. The crack 6 enters the shearing surface of the ALC base material 5 generated in the case of the above.
[0056]
As shown in FIGS. 11 (c1) and 11 (c2), when the rake surfaces I and L and the lifting portions J and M further bite in, the ALC base material 5 separated into a plane substantially triangular or substantially elliptical shape by the crack 6 is split. It is lifted as a fragment 7 and a split skin recess 8 is formed in the panel surface 2. Further, the cutting edges H and K, the rake faces I and L, and the lifting portions J and M continuously form the cut skin groove portion 4 and at the same time repeat the formation of the next split skin concave portion in the same manner as described above.
[0057]
By repeating the above operation, as shown in FIG. 12, the cut groove portion 4 and the split skin recess portion 8 can be simultaneously formed on the panel surface portion 2 of the panel edge portion of the ALC panel 1. In addition, since it is a panel edge part, although this cut-skin groove part 4 is open | released on one side, such a thing shall also be called a "cut-skin groove part" in this specification.
In the surface processing tool 50 of the second embodiment, when the second cutting edge K bites in as described above, the action timing from the second rake face L is delayed from the timing from the second lifting portion M. Further, it is possible to efficiently form the split skin recess 8 having a large crack amount, crack length, and crack width. If the action timing of the second rake face L and the second lifting portion M is simultaneous or the second rake face L is earlier, the influence of the acting force from the second rake face L becomes larger, and the comparison is made. The split skin recess 8 is formed at an early stage, and the amount of cracks, crack length, and crack width tend to be reduced.
[0058]
In addition, although it can also be used for the simultaneous formation of the cut surface groove part and the split skin recessed part in the panel surface part 2 of a panel edge part, it implements the surface processing tool 40 of the 1st Example, or its modification examples 1-4. As a result, since the vertical component of the acting force was increased, the split skin recess was formed relatively early, and the split skin recess was smaller than in the second embodiment.
[0059]
By repeating the above steps (1) and (2) vertically and horizontally on the panel surface portion 2 of the ALC panel 1, a surface pattern as shown in FIG. 13 could be formed. And the following effects can be acquired.
[0060]
(A) Reduction of total machining time
In the method of crushing the ridge after forming the groove as described in the section of the prior art and the problem, each process of ALC panel supply → groove processing → ALC panel payout is necessary to form the groove. Furthermore, since the steps of supplying the ALC panel → crushing processing → dispensing the ALC panel are necessary for forming the split skin surface, the total processing time is long.
On the other hand, according to this embodiment, since the steps of supplying the ALC panel → simultaneous formation of the cut groove portion and the split skin concave portion → dispensing the ALC panel are sufficient, the total processing time is reduced to about half or less. can do.
[0061]
(A) Reduction of equipment and operating costs
Since the cut surface groove and the split skin recess can be formed simultaneously with a set of surface processing apparatuses, the equipment cost (initial cost) is reduced. In addition, a set of devices requires less adjustment costs (running costs).
[0062]
(C) Pitch between grooves can be changed freely
As described above, the surface processing apparatus can be changed to a configuration suitable for mass production. For example, by arranging a plurality of the tool moving device 20, the preceding grooving tool 30, and the surface processing tools 40, 50 in parallel at a predetermined interval, a plurality of the cut groove grooves 4 and the split skin recesses 8 can be formed simultaneously. . Further, if the interval is configured to be adjustable, the pitch between the grooves can be freely changed only by adjusting the interval. In particular, the surface processing tools 40 and 50 can be configured to be narrow as described above, and a rotation driving motor that occupies a large space is unnecessary. Thus, the pitch between grooves can be set to be considerably small.
Even with the method of crushing the ridge after forming the groove as described in the section of the prior art and its problem, it is possible to arrange multiple groove cutting tools and split surface machining tools in parallel, and to adjust the interval However, it is difficult in terms of equipment costs, adjustment costs, and installation space. In addition, as described above, a rotary cutting blade is used to form the groove, and a rotational drive motor that occupies a large space is necessary. Therefore, the interval when a plurality of motors are arranged side by side cannot be made too small. Therefore, when it is desired to reduce the pitch between the grooves, it is not possible to cope with the interval adjustment, and it is necessary to reciprocate one rotary cutting blade many times.
[0063]
(D) Free change of crack amount, crack length and crack width
For example, a method of adjusting the amount of cracking by changing the amount of biting of the leading groove cutting edge 31 for each blade, and a method of adjusting the amount of biting while the surface processing tools 40 and 50 are machining to adjust the amount of cracking, etc. By combining with a method for adjusting the design, it is possible to form a design with rich expressiveness.
[0064]
(E) No physical defects
In the method of crushing the ridge after forming the groove as described in the section of the prior art and the problem, a physical impact is applied to the side surface portion of the groove of the ALC panel which is brittle in strength. Since this is not the case, there is no occurrence of physical defects that lead to a decrease in the durability of the panel surface and a decrease in the panel strength.
[0065]
(F) Applicable to thin ALC panels
The panel thickness of thin ALC panels is usually 35 to 37 mm, but even when digging a cut groove on the surface of the panel, it is necessary to secure a panel thickness of 30 mm or more for fire resistance, so the cut groove may be made too deep. Can not. For this reason, in the method of crushing the ridge after forming the groove as described in the section of the prior art and the problem, if the groove is shallow, the corner of the ridge will be broken, and the cracked skin surface having a large crack width Can not form.
However, according to the processing method of this embodiment, even if it is a thin ALC panel and the cut groove is shallow, it is possible to form a split skin recess having a large crack width.
[0066]
(G) The simultaneous formation of the cut skin groove portion and the split skin recess portion can be performed not only in a linear manner but also in a curved manner.
(H) The preceding grooving tool and the surface machining tool are inexpensive because of their simple structure.
(I) The width of the cut groove can be freely changed by changing the blade width of the surface processing tool.
[0067]
(3) Method of forming a cut groove in the panel center part of the panel and the panel edge part
Next, a method of forming only the cut-skin groove portion (not forming the split skin concave portion) in the panel central portion and the panel surface portion of the panel edge will be described. In this method, the surface processing tool 60 of the third embodiment is used. The leading grooving tool 30 is not used in principle (that is, the leading groove is not preformed), but may be used (that is, the leading groove may be preformed).
[0068]
When the movable platen 24 is moved forward by the drive mechanism and moved in a direction parallel to the panel surface, the groove inner cutting edge P of the surface processing tool 60 is formed on the ALC panel 1 as shown in FIGS. 15 (a1) and 15 (a2). It bites into the panel surface part 2 from the facet surface 3 and starts cutting the inner side surface 4b of the cut groove 4. Subsequently, as shown in FIGS. 15B1 and 15B2, the groove bottom cutting edge R bites into a predetermined depth (for example, 8 mm) of the panel surface portion 2 and starts forming the bottom surface 4 a of the cut surface groove portion 4. In addition, if the upper end of the groove inside cutting blade P protrudes above the panel surface, the panel surface portion at the upper edge of the cut surface groove portion 4 is hardly chipped.
[0069]
Then, when the scooping forces Fq and Fs are applied to the ALC base material 5 from the scooping surface Q and the scooping surface S and the scooping forces Fq and Fs exceed the tensile strength of the ALC base material 5, the groove bottom cutting edge R Cracks 6 enter the shearing surface of the ALC base material 5 that is slightly ahead. Both ends of the crack 6 stop at a pair of rake faces Q when viewed from the plane. As shown in FIGS. 15 (c 1) and (c 2), when the rake faces Q and S further bite, the ALC base material 5 separated into a substantially rectangular plane by the cracks 6 is lifted as the split pieces 7.
[0070]
By repeating the above operation, the cut groove portion 4 can be formed in the panel central portion of the ALC panel 1 and the panel surface portion 2 of the panel edge as shown in FIG. Also by this method, the effect similar to the effect in said (1) is acquired regarding the cut groove part 4. FIG.
[0071]
(4) Method of forming a split skin recess in the panel surface at the center of the panel
Next, a method for forming only the split skin recess in the panel surface portion at the center of the panel (not forming the cut groove portion) will be described. In this method, the surface processing tool 70 of the fourth embodiment is used. The preceding grooving tool 30 may or may not be used as in (1) above. Since the operational effects when used are the same as in (1) above, only the case where they are not used will be described here.
[0072]
When the movable platen 24 is moved forward by the drive mechanism and moved in a direction parallel to the panel surface, the cutting edge T of the blade portion 71 of the surface processing tool 70 is moved to the ALC panel 1 as shown in FIGS. 18 (a1) and (a2). The bite surface 3 bites into a predetermined depth of the panel surface portion 2 (for example, 8 mm as in the example of FIG. 4). This biting causes a scooping force Fu to act on the ALC base material 5 above the scoop surface U.
[0073]
As shown in FIGS. 18 (b1) and (b2), when the lifting portion V higher than the rake face U begins to bite into the panel surface portion 2, the lifting force Fv starts to act on the ALC base material 5, and eventually the rake force Fu exceeds the rake force Fu. The lifting force Fv becomes dominant. Then, when the lifting force Fv exceeds the tensile strength of the ALC base material 5, the ALC base material generated in a substantially oval shape (the size and shape thereof varies) around the cutting edge T as seen from the plane. The crack 6 enters the shear surface of 5.
[0074]
As shown in FIGS. 18 (c1) and 18 (c2), when the lifting portion V further bites in, the ALC base material 5 separated into a plane substantially elliptical shape by the crack 6 is lifted as a split piece 7, and is applied to the panel surface portion 2. A split skin recess 8 is formed.
[0075]
Note that the cutting edge T has a sharp tip, and the flank W that starts immediately after the cutting edge T has a clearance angle φ so that it does not rub against the ALC. Further, the left and right side portions of the tool only pass through the space after the formation of the split skin recess 8 and do not work as side portions as in the first embodiment. For this reason, only the line which the sharp tip of the cutting edge T sharpened appears in the center of the split skin recessed part 8, and a cut skin groove part is not formed.
[0076]
By repeating the above operation, the split skin recess 8 can be formed in the panel surface portion 2 at the center of the ALC panel 1 as shown in FIG. Also by this method, the effect similar to the effect in said (1) is acquired regarding the split skin recessed part 8. FIG.
[0077]
In addition, this invention is not limited to the said embodiment, For example, it can also be suitably changed and embodied as follows, for example in the range which does not deviate from the meaning of invention.
[0078]
(1) By changing the shape of the rake face or lifted portion of the surface processing tool, the rake angle, the lifting angle, or the like, the shape, amount of cracking, or the like of the formed split skin recess can be changed. Further, the cracking direction (downward R / upward R) can also be changed.
(2) By changing the shape of the blade portion of the surface processing tool, the cross-sectional shape of the cut groove portion to be formed can be changed. For example, by flattening the bottom surface of the blade portion as in the embodiment, or by making it a circular arc surface, a V-shaped surface, etc., the bottom surface of the cut groove portion is flattened, or the R surface, V-shaped, etc. Can do.
(3) FIG. 20 shows that the shape of the blade portion 41 of the surface machining tool 40 of the first embodiment is tapered, the rake face B has a two-step inclined structure, and in particular, the side portion D is sharp with substantially no height. A modified example 5 is shown. When the surface machining tool 40 of the modified example 5 is used to machine by the same method as in (1) above, the split skin recess 8 is formed in the same manner, but the cut groove 4 is substantially the inner surface of the cut skin. There is no, and it consists only of the bottom face 4a of the cut skin.
[0079]
{Circle around (4)} After the surface processing in the above embodiment, the design property can be further enhanced by additionally processing the cut groove portion with a conventional rotationally driven cutter. (5) By providing each surface processing tool corresponding to the length direction and width direction of the panel, all processing can be performed at once.
(6) In the above embodiment, the tool is moved, but the ALC panel can be moved and moved in a direction parallel to the panel surface.
(7) In the above embodiment, the tool 27 is moved by the motor 27, but it can also be moved by a mechanism using air pressure and hydraulic pressure.
(8) Install the leading groove cutting edge in front of a plurality of surface processing tools, change the amount of biting of the leading groove cutting edge, and make a difference in the cracking amount.
{Circle around (9)} The split skin recess can be formed only on one side of the cut skin groove in the panel surface portion at the center of the panel. As a blade part of the surface processing tool used in this case, the one side is the blade part of the first embodiment, and the other side is the blade part of the second embodiment or the third embodiment.
[0080]
【The invention's effect】
  As detailed above, claims 1 to17According to the present invention, it is possible to efficiently form the design concave portion extending in a strip shape including the split skin concave portion on the panel surface portion of the ALC panel without causing any physical defect.11-13 and 17According to the present invention, it is efficient because the design concave portion including the cut groove portion and the split skin concave portion can be simultaneously formed by a set of devices.
[Brief description of the drawings]
FIG. 1 is a front view of a surface processing apparatus for an ALC panel according to an embodiment of the present invention.
FIG. 2 is a perspective view of a main part of the surface processing apparatus.
FIGS. 3A and 3B show a surface machining tool according to a first embodiment of the surface machining apparatus, wherein FIG. 3A is a plan view, FIG. 3B is a side view, FIG. 3C is a front view, and FIG. It is.
FIGS. 4A and 4B show the simultaneous formation of a cut-slot groove and a split-skin recess using the surface processing tool of the first embodiment in the order of progress, (a1) (a2) (a3) are plan views, and (b1) (b2) (b3). ) Is a side view.
5 is a perspective view showing the processed ALC panel of FIG. 4; FIG.
6A is a perspective view showing a surface machining tool according to a first modification of the first embodiment, and FIG. 6B is a perspective view showing a surface machining tool according to the second modification.
FIGS. 7A and 7B are perspective views showing a surface machining tool according to Modification 3 of the first embodiment, and FIGS. 7B and 7B are perspective views showing a surface machining tool according to Modification 4. FIGS.
FIGS. 8A and 8B show the simultaneous formation of a cut groove portion and a split skin recess portion in the order of progress by the preceding grooving tool and the surface machining blade of the first embodiment, wherein (a1), (a2) and (a3) are plan views, and (b1) (B2) and (b3) are side views.
9 is a perspective view showing the processed ALC panel of FIG. 8. FIG.
10A and 10B show a surface processing tool of a second embodiment of the surface processing apparatus, where FIG. 10A is a perspective view, FIG. 10B is a side view, and FIG. 10C is a cross-sectional view taken along line cc of FIG. .
FIGS. 11A and 11B show the simultaneous formation of the cut groove portion and the split skin recess portion in the order of progress by the surface processing tool of the second embodiment, wherein (a1), (a2), and (a3) are plan views, and (b1), (b2), (b3); ) Is a side view.
12 is a perspective view showing the processed ALC panel of FIG. 11. FIG.
13 is a plan view showing the ALC panel after processing of FIG. 4 or FIG. 8 and FIG. 12;
14A and 14B show a surface machining tool according to a third embodiment of the surface machining apparatus, where FIG. 14A is a perspective view, FIG. 14B is a plan view, FIG. 14C is a front view, and FIG. FIG.
FIGS. 15A and 15B show the machining of the cut groove portion by the surface machining tool of the third embodiment in the order of progress; FIGS. 15A to 15A are plan views, and FIGS. 15B to 21B are side views. FIGS. is there.
16 is a perspective view showing the processed ALC panel of FIG. 15. FIG.
FIG. 17 shows a surface processing tool of a fourth embodiment of the surface processing apparatus, wherein (a) is a plan view, (b) is a side view, and (c) is a front view.
FIGS. 18A and 18B show the machining of the cut groove portion by the surface machining tool tool of the fourth embodiment in the order of progress, (a1), (a2) and (a3) are plan views, and (b1), (b2) and (b3) are side views. is there.
19 is a perspective view showing the processed ALC panel of FIG. 18. FIG.
20A and 20B show a surface machining tool according to Modification 5 of the first embodiment, wherein FIG. 20A is a plan view, FIG. 20B is a side view, FIG. 20C is a front view, and FIG. d line sectional drawing, (e) is the ee sectional view taken on the line (a).
FIG. 21 is a perspective view showing an ALC panel after being processed by the surface processing tool according to the fifth modification.
[Explanation of symbols]
1 ALC panel
2 Panel surface
3 Panel facet
4 Cut groove
4a Bottom
4b Inside surface
5 ALC base material
6 Crack
7 Broken pieces
80% skin recess
9 Leading groove
10 base
11 legs
12 tables
13 Ruler
20 Tool movement mechanism
30 Leading groove cutting tool
31 Leading groove cutting blade
40, 50, 60, 70 Surface processing tools
A Cutting blade
B rake face
C Lifting part
C1 forefront
C2 balance
D side part
E Relief recess
H No blade at all
I First rake face
J First lifting part
K second cutting edge
L Second rake face
M Second lifting part
N side part
P Cutting edge for groove inside
R Cutting edge for groove bottom
S rake face
T cutting blade
U rake face
V Lifting part
W flank

Claims (17)

  By moving the surface processing tool or the ALC panel relatively in a direction parallel to the panel surface in a state where the surface processing tool of the non-rotating drive type is cut into a predetermined depth of the panel surface portion of the ALC panel, A crack is formed in the shear surface of the ALC base material generated in a substantially elliptical shape around the cutting edge of the surface processing tool, and the ALC base material separated into a plane substantially elliptical shape by the crack is lifted as a split piece and the panel surface portion The surface processing method of the ALC panel which forms the design recessed part extended in the strip | belt shape containing the said split skin recessed part in this panel surface part by forming a split skin recessed part in the same, and repeating formation of the next split skin recessed part similarly.   The surface processing method for an ALC panel according to claim 1, wherein a leading groove is formed in advance at a position where the design recess is to be formed.   A surface processing apparatus for forming a design concave portion extending in a strip shape including a split skin concave portion on a panel surface portion of an ALC panel, wherein the surface processing tool is a non-rotational drive type surface processing tool, and the surface processing tool is moved to a predetermined depth of the panel surface portion. A mechanism for moving the surface processing tool or the ALC panel relatively in a direction parallel to the panel surface in a state of being bitten, and the surface processing tool includes a cutting edge and a rake surface for applying a scooping force to the ALC base material And an ALC including a lifting portion that cracks the shear plane of the ALC base material generated in a substantially elliptic shape around the cutting edge and lifts the ALC base material separated into a plane substantially elliptical shape by the crack as a split piece. Panel surface processing equipment.   The surface processing apparatus of the ALC panel of Claim 3 provided with the preceding groove cutting tool which precedes and forms a preceding groove in the formation plan position of the said design recessed part. The surface processing method for an ALC panel according to claim 1 or 2 , wherein the surface processing tool bites into a predetermined depth of the panel surface portion from the edge surface of the ALC panel. 6. The surface processing method for an ALC panel according to claim 1 , wherein the design recess is a combination of a cut groove portion and the split skin recess formed on both sides of the cut groove portion. The ALC panel surface processing method according to claim 6, wherein the surface processing tool includes a side portion of a tool side portion that forms an edge of a bottom surface of the cut groove portion. The surface processing apparatus for an ALC panel according to claim 3 or 4 , wherein the rake face is provided so as to fall obliquely from the center in the width direction to both left and right sides. The surface processing apparatus for an ALC panel according to claim 3, 4 or 8 , wherein the lifting portion is provided in the middle or the end of the rake face. The surface processing apparatus for an ALC panel according to claim 3, 4, 8, or 9 , wherein at least the foremost portion of the lifting portion has a sharp ridgeline. The ALC panel surface processing method according to claim 7, wherein the side portion is a surface having a height so that the cut groove portion includes an inner side surface of the cut surface and a bottom surface of the cut surface. The ALC panel according to claim 7, wherein the side portion has substantially no height so that the cut groove portion has substantially no inner side surface of the cut surface and consists only of a bottom surface of the cut surface. Surface processing method . The surface of the ALC panel according to claim 7, wherein the front end side of the side portion is in a state having almost no height continuously to the cutting edge, but gradually increases to form a surface as it goes back to the rear side. Processing method . The surface processing method for an ALC panel according to claim 1, 2 or 5 , wherein the design recess comprises only the split skin recess. The surface processing method for an ALC panel according to claim 14, wherein a tip of the cutting blade is sharply narrow so as not to form a cut groove portion. The surface processing tool or the ALC panel is moved relatively in a direction parallel to the panel surface in a state in which the non-rotation driven surface processing tool is bitten to a predetermined depth of the panel surface portion of the panel edge of the ALC panel. Thus, a crack is formed in the shear surface of the ALC base material generated in a substantially triangular or substantially semi-elliptical shape around the cutting edge of the surface processing tool as viewed from above, and the ALC separated into a substantially triangular or substantially semi-elliptical shape by the crack. By lifting the base material as a broken piece to form a split skin recess in the panel surface, and repeating the formation of the next split skin recess in the same manner, A surface processing method for an ALC panel, wherein a design concave portion extending in a strip shape including the split skin concave portion is formed on a flannel surface portion. The ALC panel surface processing method according to claim 16, wherein the design recess is a combination of a cut groove portion and the split skin recess formed on one side of the cut groove portion.

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