JPH0238639A - Sound absorbing board and manufacturing thereof - Google Patents
Sound absorbing board and manufacturing thereofInfo
- Publication number
- JPH0238639A JPH0238639A JP63187518A JP18751888A JPH0238639A JP H0238639 A JPH0238639 A JP H0238639A JP 63187518 A JP63187518 A JP 63187518A JP 18751888 A JP18751888 A JP 18751888A JP H0238639 A JPH0238639 A JP H0238639A
- Authority
- JP
- Japan
- Prior art keywords
- sound
- dovetail groove
- absorbing
- base material
- sound absorbing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 238000000034 method Methods 0.000 claims description 9
- 230000000694 effects Effects 0.000 abstract description 10
- 238000013016 damping Methods 0.000 abstract description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Landscapes
- Building Environments (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
請求項１および２記載の発明は、吸音板とその製造方法
に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The invention according to claims 1 and 2 relates to a sound absorbing plate and a method for manufacturing the same.
天井板１として、たとえば、第９図にみるように、表面
に向けて開口し奥部が閉じている穴２を有するものを用
いれば、室内の音エネルギーが同大２内で減衰されて吸
音効果が上がる。For example, as shown in Fig. 9, if a ceiling board 1 is used that has a hole 2 that opens toward the surface and is closed at the back, the sound energy in the room will be attenuated within the ceiling board 2, resulting in sound absorption. The effect increases.
しかし、上記構造の穴を有する天井板１は、今一つ吸音
効果が低いという問題を有していた。However, the ceiling plate 1 having the above-mentioned structure had a problem in that the sound absorption effect was relatively low.
前記事情に鑑みて、請求項１および２記載の発明の課題
とするところは、より吸音効果が上がる吸音板を提供す
ることと、この吸音板を容易に得させる製造方法を提供
することにある。In view of the above circumstances, it is an object of the invention according to claims 1 and 2 to provide a sound-absorbing plate with a higher sound-absorbing effect, and to provide a manufacturing method for easily obtaining this sound-absorbing plate. .
前記課題を解決するため、請求項１記載の発明は、表面
に向けてのみ開口した吸音凹部を有する吸音板であって
、前記吸音凹部が、蟻溝と、同蟻溝に続いて設けられて
いて蟻溝の最大溝幅寸法と同一の直径の円形の穴からな
るようにする。In order to solve the above problem, the invention according to claim 1 is a sound absorbing plate having a sound absorbing recess opened only toward the surface, the sound absorbing recess being provided with a dovetail groove and following the dovetail groove. It should consist of a circular hole with the same diameter as the maximum groove width of the dovetail groove.
請求項２記載の発明は、板表面に向けてのみ開口した吸
音凹部を有する吸音板を製造する方法であって、軸先端
に大径刃部、その基端側に小径刃部を各有する２段刃回
転式の切削刃を、その回転中心軸が吸音板を作るための
基材に交差するようにして回転させながら、同基材をそ
の表面から一定の深さまで切削することで円形の穴から
なる第１の吸音凹部を形成してのち、同切削刃を前記深
さを保って回転させながら前記基材の表面に対し平行に
移動させることで蟻溝からなる第２の吸音凹部を形成し
、同蟻溝形成後に、前記切削刃を前記基材の表面方向へ
脱去させることで同基材に円形の穴からなる第３の吸音
凹部を形成するようにしている。The invention according to claim 2 is a method for manufacturing a sound absorbing plate having a sound absorbing recess that opens only toward the plate surface, the method comprising: a large diameter blade portion at the tip of the shaft, and a small diameter blade portion at the base end thereof. A circular hole is created by rotating a stepped rotary cutting blade so that its central axis of rotation intersects the base material for making the sound absorbing board, and cutting the base material to a certain depth from the surface. After forming a first sound-absorbing recess consisting of a dovetail groove, a second sound-absorbing recess consisting of a dovetail groove is formed by moving the cutting blade parallel to the surface of the base material while rotating while maintaining the depth. After the dovetail grooves are formed, the cutting blade is removed toward the surface of the base material, thereby forming a third sound-absorbing recess made of a circular hole in the base material.
表面に向けてのみ開口した吸音凹部を有する吸音板であ
って、前記吸音凹部が、蟻溝と、同蟻溝に続いて設けら
れていて蟻溝の最大溝幅寸法と同一の直径の円形の穴か
らなるようにすると、従来の吸音穴は、周囲壁面が底面
に対して垂直であって、−旦大内に入った音が外に出や
すいのに対し、蟻溝は、側部において底面に近づ（程幅
が増す、すなわち、奥側に広くなっているため、−旦内
部に入った音が外に逃げにくい。そのため、音の減衰効
果が高い。しかも、この蟻溝が従来と同様の円形穴につ
ながっているため、この穴を通して音が入り込みやすい
。板表面に向けてのみ開口した吸音凹部を有する吸音板
を製造する方法であって、軸先端に大径刃部、その基端
側に小径刃部を各有する２段刃回転式の切削刃を、その
回転中心軸が吸音板を作るための基材に交差するように
して回転させながら、同基材をその表面から一定の深さ
まで切削することで円形の穴からなる第１の吸音凹部を
形成してのち、同切削刃を前記深さを保って回転させな
がら前記基材の表面に対し平行に移動させることで蟻溝
からなる第２の吸音凹部を形成し、同蟻溝形成後に、前
記切削刃を前記基材の表面方向へ脱去させることで同基
材に円形の穴からなる第３の吸音凹部を形成するように
していると、前記穴および蟻溝が、切削刃を回転させな
がら単純な移動行程を経るだけで同時に成形されるよう
になる。A sound-absorbing plate having a sound-absorbing recess that opens only toward the surface, the sound-absorbing recess comprising a dovetail groove and a circular shape that is provided following the dovetail groove and has the same diameter as the maximum groove width of the dovetail groove. In conventional sound-absorbing holes, the surrounding wall surface is perpendicular to the bottom surface, making it easier for sound that has entered the interior to escape, whereas with dovetail grooves, the surrounding wall surface is perpendicular to the bottom surface, making it easier for sound to escape from the outside. As the width increases as it gets closer to (in other words, it gets wider toward the back), it is difficult for sound that has entered the interior to escape outside.Therefore, the sound attenuation effect is high.Moreover, this dovetail groove is different from the conventional one. Since it is connected to a similar circular hole, it is easy for sound to enter through this hole.This is a method for manufacturing a sound absorbing board that has a sound absorbing recess that opens only toward the board surface. While rotating a two-stage rotary cutting blade with a small-diameter blade on each end so that its central axis of rotation intersects with the base material for making the sound-absorbing plate, After forming a first sound-absorbing recess consisting of a circular hole by cutting to a depth of A second sound-absorbing recess made of a groove is formed, and after the dovetail groove is formed, a third sound-absorbing recess made of a circular hole is formed in the same base material by removing the cutting blade toward the surface of the base material. By doing so, the hole and the dovetail groove can be simultaneously formed by simply moving the cutting blade while rotating it.
以下に、請求項１および２記載の発明を、その実施例を
あられした図面を参照しつつ詳しく説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claims 1 and 2 will be explained in detail below with reference to the drawings showing embodiments thereof.
第１図および第３図は、請求項１記載のの発明にかかる
吸音板の第１実施例をあられしている。1 and 3 show a first embodiment of a sound absorbing plate according to the invention as set forth in claim 1. FIG.
この吸音板は天井板として用いられるもので、これらの
図にみるように、正方形の板材を基材とし、同基材の対
応する側片間の中央位置に吸音凹部１０が形成されてい
る。同凹部１０は、両端に配置された円形の穴（第１お
よび第３の吸音凹部）１０ａ、１０ａとこれら両穴１０
ａ、１０ａ間を直線状につなぐように位置するｖＡＩ
（第２の吸音凹部）１０ｂからなる１本の溝とされてい
る。この吸音凹部１０は、第３図にみるように、先端の
大径部分１１ａとそれより軸部１１Ｃ側の小径部分１１
ｂの２つの部分を切削部分を備えた切削刃１１により加
工される。この切削刃１１を用いて前記基材を加工する
方法が、前記請求項２記載の発明である。同切削刃１１
はその軸中心を前記基材に垂直に向けて回転させながら
そのまま切削態勢に入ることにより前記穴１０ａの一方
が加工される。同大１０ａは前記大径部分１１ａと同じ
円形の穴に加工される。続いて同切削刃１１を基材の平
面方向に回転させながら移動させれば前記蟻溝１０ｂが
加工される。同蟻溝１０ｂは、第２図にみるように、大
径部分１１ａと小径部分１１ｂの段差形状により表面の
開口１０Ｃ両側に突起１０ｄ、１０ｄが臨まむような溝
に加工される。前記切削刃１１は、蟻溝１０ｂの終端部
にさしかかったところで上方へ後退される。これにより
、他方の穴１０ａが加工される。This sound-absorbing board is used as a ceiling board, and as shown in these figures, a square board is used as a base material, and a sound-absorbing recess 10 is formed in the center position between the corresponding side pieces of the base material. The recess 10 includes circular holes (first and third sound-absorbing recesses) 10a, 10a arranged at both ends, and both holes 10a, 10a.
vAI located so as to connect a and 10a in a straight line
(Second sound-absorbing recess) It is a single groove consisting of 10b. As shown in FIG. 3, this sound-absorbing recess 10 includes a large-diameter portion 11a at the tip and a small-diameter portion 11 on the side of the shaft portion 11C.
The two parts b are processed by a cutting blade 11 having a cutting part. A method of processing the base material using this cutting blade 11 is the invention according to claim 2. Same cutting blade 11
One of the holes 10a is machined by turning the center of the axis perpendicularly to the base material and entering the cutting position. The same size 10a is machined into the same circular hole as the large diameter portion 11a. Subsequently, the dovetail groove 10b is machined by rotating and moving the cutting blade 11 in the plane direction of the base material. As shown in FIG. 2, the dovetail groove 10b is formed into a groove in which the protrusions 10d, 10d face both sides of the opening 10C on the surface due to the stepped shape of the large diameter portion 11a and the small diameter portion 11b. The cutting blade 11 is retreated upward when it approaches the terminal end of the dovetail groove 10b. As a result, the other hole 10a is machined.
第４図は第２実施例をあられし、同実施例の吸音板は、
両端に穴１５ａ、１５ａが配置されその間に蟻溝１５ｂ
が形成された吸音凹部１５が側片に平行になるように複
数本配列されている。Figure 4 shows the second embodiment, and the sound absorbing plate of the same embodiment is as follows:
Holes 15a, 15a are arranged at both ends, and a dovetail groove 15b is arranged between them.
A plurality of sound absorbing recesses 15 are arranged parallel to the side pieces.
第５図は第３実施例をあられし、同実施例の吸音板は、
両端に穴２０ａ、２０ａが配置されその間に蟻ｉ２０
ｂが形成された吸音凹部２ｏが側片に４５°傾斜するよ
うに１本設けられている。Figure 5 shows the third embodiment, and the sound absorbing plate of the same embodiment is as follows:
Holes 20a, 20a are arranged at both ends, and an ant i20 is placed between them.
One sound-absorbing recess 2o in which b is formed is provided on the side piece so as to be inclined at 45 degrees.
第６図は第４実施例をあられし、同実施例の吸音板は、
前記第３実施例のように両端に穴２５ａ２５ａが配置さ
れその間に蟻溝２５ｂが形成されていて側片に４５°傾
斜する吸音凹部２５の複数が面内の縦横に整列状に配列
されている。Figure 6 shows the fourth embodiment, and the sound absorbing plate of the same embodiment is as follows:
As in the third embodiment, holes 25a25a are arranged at both ends, dovetail grooves 25b are formed between them, and a plurality of sound-absorbing recesses 25 inclined at 45 degrees on the side pieces are arranged vertically and horizontally in a plane. .
第７図は第５実施例をあられし、同実施例の吸音板は、
蟻４３０ ｂの伸びる方向の中央に位置するように穴３
０ａが配置された吸音凹部３０を備え、間溝３０が斜め
に向いたものが複数配列されたものとされている。FIG. 7 shows the fifth embodiment, and the sound absorbing plate of the same embodiment is as follows:
Hole 3 so that it is located in the center of the direction in which the ant 430 b extends.
A plurality of sound absorbing recesses 30 in which grooves 0a are arranged and grooves 30 facing diagonally are arranged.
第８図は第６実施例をあられし、同実施例の吸音板は、
前記各実施例にみるような個別的な吸音凹部をもつもの
でなく、正方形のコーナーに対応する個所にそれぞれ穴
３５ａ・・・が配置されこれらの間を正方形になるよう
につなぐ蟻溝３５ａ・・・が形成されたものである。こ
の切削方法の１つとして、１つの穴３５ａが切削刃によ
り加工されたのち、それに続くように蟻溝３５ｂが加工
され、その終端で切削刃を後退させてつぎの穴３５ａが
加工される。そのあとは、前記の繰り返しにより加工さ
れるようにする。FIG. 8 shows the sixth embodiment, and the sound absorbing plate of the same embodiment is as follows:
Rather than having individual sound-absorbing recesses as seen in the above embodiments, holes 35a are arranged at locations corresponding to the corners of the square, and dovetail grooves 35a connect these holes to form a square. ... was formed. As one of the cutting methods, one hole 35a is machined by a cutting blade, and then a dovetail groove 35b is machined following it, and at the end of the dovetail groove 35b, the cutting blade is retreated to machine the next hole 35a. After that, the processing is repeated as described above.
前記のように、請求項１記載の発明にかかる吸音板は、
吸音凹部が、蟻溝と、同蟻溝に続いて設けられていて蟻
溝の最大溝幅寸法と同一の直径の円形の穴からなってい
るので、従来の吸音穴は、周囲壁面が底面に対して垂直
であって、−旦大内に入った音が外に出やすいのに対し
、蟻溝は、側部において底面に近づく程幅が増す、すな
わち、奥側に広くなっているため、−旦内部に入った音
が外に逃げにくい。そのため、音の減衰効果が高い。し
かも、この蟻溝が従来と同様の円形穴につながっている
ため、この穴を通して音が入り込みやすい。請求項２記
載の発明は、軸先端に大径刃部、その基端側に小径刃部
を各有する２段刃回転式の切削刃を、その回転中心軸が
吸音板を作るための基材に交差するようにして回転させ
ながら、同基材をその表面から一定の深さまで切削する
ことで円形の穴からなる第１の吸音凹部を形成してのち
、同切削刃を前記深さを保って回転させながら前記基材
の表面に対し平行に移動させることで蟻溝からなる第２
の吸音凹部を形成し、同蟻溝形成後に、前記切削刃を前
記基材の表面方向へ脱去させることで同基材に円形の穴
からなる第３の吸音凹部を形成するようにするので、前
記穴および蟻溝が、切削刃を回転させながら単純な移動
行程を経るだけで同時に成形されるようになる。As mentioned above, the sound absorbing plate according to the invention according to claim 1,
The sound-absorbing recess consists of a dovetail groove and a circular hole that is provided following the dovetail groove and has the same diameter as the maximum groove width of the dovetail groove. On the other hand, the dovetail grooves are perpendicular to the inside, and the sound that enters the inside easily comes out, whereas the dovetail grooves get wider as they get closer to the bottom on the sides, in other words, they get wider towards the back. - Once the sound enters the interior, it is difficult to escape to the outside. Therefore, it has a high sound damping effect. Moreover, since this dovetail groove is connected to a circular hole similar to the conventional one, it is easy for sound to enter through this hole. The invention as claimed in claim 2 provides a base material for making a sound absorbing plate, a two-stage rotary cutting blade having a large-diameter blade portion at the tip of the shaft and a small-diameter blade portion at the proximal end thereof, the rotational center axis of which is a two-stage rotary cutting blade. A first sound-absorbing recess consisting of a circular hole is formed by cutting the base material to a certain depth from its surface while rotating the cutting blade so as to intersect with the surface, and then the cutting blade is held at the same depth. By moving parallel to the surface of the base material while rotating it, a second groove consisting of a dovetail groove is formed.
After forming the dovetail groove, the cutting blade is removed toward the surface of the base material to form a third sound absorbing recess consisting of a circular hole in the base material. , the hole and the dovetail groove can be formed simultaneously through a simple movement process while rotating the cutting blade.
なお、前記突起は吸音板の表面に必ずしも位置しないこ
ともある。前記蟻溝の断面形状および平面形状は前記実
施例のものに限定されない。平面形状は円形や特殊な曲
線形状のものでもよい。断面上において溝奥部のコーナ
ーが丸くなったものにすることもできる。前記吸音板は
天井用以外の用途にも通用することができる。Note that the protrusions may not necessarily be located on the surface of the sound absorbing plate. The cross-sectional shape and planar shape of the dovetail groove are not limited to those of the above embodiment. The planar shape may be circular or a special curved shape. It is also possible to have rounded corners at the deep end of the groove in cross section. The sound absorbing board can be used for purposes other than ceilings.
前記請求項１記載の発明は、以上のように構成されてい
るため、より吸音効果が上がる吸音板を提供することが
できる。請求項２記載の発明によれば、前記吸音効果の
高い吸音板を容易に得ることができるようになる。Since the invention according to claim 1 is configured as described above, it is possible to provide a sound absorbing plate with a higher sound absorbing effect. According to the second aspect of the invention, the sound absorbing plate having a high sound absorbing effect can be easily obtained.
第１図はこの発明にががる吸音板の第１実施例をあられ
した正面図、第２図はその■−■線断面図、第３図はそ
の切削刃をあられした斜視図、第４図は第２実施例をあ
られした正面図、第５図は第３実施例をあられした正面
図、第６図は第４実施例をあられした正面図、第７図は
第５実施例をあられした正面図、第８図は第６実施例を
あられした正面図、第９図は従来の吸音板をあられした
断面図である。
１０．１５，２０．２５゜
部 １０ ａ、 １５ ａ、 ２０ ａ。
３５ ａ −・・穴 １０ｂ、１５ｂ。
３０ｂ、３５ｂ・・・蟻溝
３０．３５・・・吸音凹
２５ａ、 ３０ａ。
２０ｂ、 ２５ｂ。
第
図
第４図
第
図
第８図
第９図Fig. 1 is a front view showing the first embodiment of the sound absorbing plate according to the present invention, Fig. 2 is a sectional view taken along the line ■-■, Fig. 3 is a perspective view showing the cutting blade, and Fig. 4 The figure is a front view of the second embodiment, FIG. 5 is a front view of the third embodiment, FIG. 6 is a front view of the fourth embodiment, and FIG. 7 is a front view of the fifth embodiment. FIG. 8 is a front view of the sixth embodiment, and FIG. 9 is a cross-sectional view of a conventional sound absorbing plate. 10.15, 20.25° parts 10 a, 15 a, 20 a. 35 a - Holes 10b, 15b. 30b, 35b...Dovetail groove 30.35...Sound absorbing recess 25a, 30a. 20b, 25b. Figure 4 Figure 8 Figure 9
Claims (1)
であって、前記吸音凹部が、蟻溝と、同蟻溝に続いて設
けられていて蟻溝の最大溝幅寸法と同一の直径の円形の
穴からなっていることを特徴とする吸音板。 ２ 板表面に向けてのみ開口した吸音凹部を有する吸音
板を製造する方法であって、軸先端に大径刃部、その基
端側に小径刃部を各有する２段刃回転式の切削刃を、そ
の回転中心軸が吸音板を作るための基材に交差するよう
にして回転させながら、同基材をその表面から一定の深
さまで切削することで円形の穴からなる第１の吸音凹部
を形成してのち、同切削刃を前記深さを保って回転させ
ながら前記基材の表面に対し平行に移動させることで蟻
溝からなる第２の吸音凹部を形成し、同蟻溝形成後に、
前記切削刃を前記基材の表面方向へ脱去させることで同
基材に円形の穴からなる第３の吸音凹部を形成するよう
にすることを特徴とする吸音板の製造方法。[Scope of Claims] 1. A sound-absorbing plate having a sound-absorbing recess that opens only toward the surface, wherein the sound-absorbing recess is provided with a dovetail groove and following the dovetail groove, and the maximum groove width dimension of the dovetail groove is A sound-absorbing board characterized by having circular holes having the same diameter as the sound absorbing board. 2. A method for manufacturing a sound-absorbing plate having a sound-absorbing recess that opens only toward the plate surface, which includes a two-stage rotary cutting blade having a large-diameter blade portion at the tip of the shaft and a small-diameter blade portion at the base end thereof. is rotated so that its center axis of rotation intersects the base material for making the sound absorbing plate, and the base material is cut to a certain depth from its surface to form a first sound absorbing recess consisting of a circular hole. After forming, a second sound-absorbing recess consisting of a dovetail groove is formed by moving the cutting blade parallel to the surface of the base material while rotating while maintaining the depth, and after forming the dovetail groove. ,
A method for manufacturing a sound absorbing plate, characterized in that a third sound absorbing recess consisting of a circular hole is formed in the base material by removing the cutting blade toward the surface of the base material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63187518A JPH0238639A (en) | 1988-07-26 | 1988-07-26 | Sound absorbing board and manufacturing thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63187518A JPH0238639A (en) | 1988-07-26 | 1988-07-26 | Sound absorbing board and manufacturing thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0238639A true JPH0238639A (en) | 1990-02-08 |
Family
ID=16207480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63187518A Pending JPH0238639A (en) | 1988-07-26 | 1988-07-26 | Sound absorbing board and manufacturing thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0238639A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59213843A (en) * | 1983-05-19 | 1984-12-03 | 大建工業株式会社 | Building panel and production thereof |
-
1988
- 1988-07-26 JP JP63187518A patent/JPH0238639A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59213843A (en) * | 1983-05-19 | 1984-12-03 | 大建工業株式会社 | Building panel and production thereof |
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