JPH0733533U - Circular saw - Google Patents
Circular sawInfo
- Publication number
- JPH0733533U JPH0733533U JP6504393U JP6504393U JPH0733533U JP H0733533 U JPH0733533 U JP H0733533U JP 6504393 U JP6504393 U JP 6504393U JP 6504393 U JP6504393 U JP 6504393U JP H0733533 U JPH0733533 U JP H0733533U
- Authority
- JP
- Japan
- Prior art keywords
- circular saw
- slit
- slits
- saw body
- circumferential direction
- 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.)
- Withdrawn
Links
Landscapes
- Sawing (AREA)
Abstract
(57)【要約】
【目的】 丸鋸本体の外周部に生ずる振動を有効に抑制
して、振動に伴う金属音の発生を大幅に軽減することが
できると共に、スリットで囲まれた丸鋸本体部分の飛び
出しを防止できる丸鋸を提供する。
【構成】 丸鋸本体2の外周部に周方向に延びつつ径方
向にも延びるスリット4が複数形成され、各スリット4
には所要箇所に不連続部5,6が形成されると共に、隣
合うスリット4,4の対向端部は、丸鋸本体2の径方向
に対向すると共に、周方向に互いに入り込んでまたは互
いに入り込む付近まで延びて形成され、上記各スリット
4内に防振材が装填されている。
(57) [Abstract] [Purpose] It is possible to effectively suppress the vibration generated at the outer peripheral portion of the circular saw body, and to significantly reduce the generation of metallic noise due to the vibration, and at the same time, the circular saw body surrounded by the slits. Provide a circular saw that can prevent a part from popping out. [Structure] A plurality of slits 4 extending in the circumferential direction and extending in the radial direction are formed on the outer peripheral portion of the circular saw body 2, and each slit 4
Is formed with discontinuous portions 5 and 6 at required positions, and the opposing ends of the adjacent slits 4 and 4 are opposed to each other in the radial direction of the circular saw body 2 and are interleaved or interdigitated in the circumferential direction. It is formed so as to extend to the vicinity, and a vibration damping material is loaded in each of the slits 4.
Description
【0001】[0001]
本考案は、金属材を切断する丸鋸に関するもので、特に、切断時に生じる丸鋸 本体外周部の振動を抑制して、その振動により発生する金属音を低減するするよ うにした丸鋸に関する。 The present invention relates to a circular saw that cuts a metal material, and more particularly to a circular saw that suppresses vibration of the outer peripheral portion of the circular saw body that occurs during cutting and reduces metal noise generated by the vibration.
【0002】[0002]
丸鋸本体の外周部に弧状のスリットを複数形成して、丸鋸本体の振動に伴う金 属音を抑えるようにした丸鋸は、従来、実開平1−92318号公報等によって 知られているが、従来この種の丸鋸では、丸鋸本体に形成されたスリット相互の 周方向間隔が広いため、丸鋸本体の外周部で発生した振動が各スリット相互間の 非スリット部から丸鋸本体の内周部に伝播して、十分な制振効果が得られず、ま た各スリットがその一端から他端に亘って連続形成されているため、使用してい る間にそのスリットで囲まれた丸鋸本体部分が飛び出すと云う問題もあった。 A circular saw in which a plurality of arcuate slits are formed on the outer peripheral portion of the circular saw body to suppress the metallic noise associated with the vibration of the circular saw body is conventionally known from Japanese Utility Model Publication No. 1-92318. However, in this type of circular saw, the slits formed in the circular saw body have a large circumferential spacing, so that vibrations generated at the outer periphery of the circular saw body are transmitted from the non-slit areas between the slits to the circular saw body. Since it propagates to the inner peripheral part of the device and a sufficient damping effect is not obtained and each slit is formed continuously from one end to the other, it is surrounded by the slit while it is in use. There was also a problem that the circular saw body part popped out.
【0003】 本考案は、上記のような従来の課題に鑑み、丸鋸本体外周部に生ずる振動を有 効に抑制して、振動に伴う金属音の発生を大幅に軽減することができると共に、 スリットで囲まれた丸鋸本体部分の飛び出しを防止できる丸鋸を提供することを 目的とする。In view of the conventional problems as described above, the present invention can effectively suppress the vibration generated in the outer peripheral portion of the circular saw body, and can significantly reduce the generation of metallic noise due to the vibration. It is an object of the present invention to provide a circular saw capable of preventing the circular saw body surrounded by the slit from protruding.
【0004】[0004]
上記の目的を達成し得る本考案の丸鋸1は、丸鋸本体2の外周部に周方向に延 びつつ径方向にも延びるスリット4が複数形成され、各スリット4には所要箇所 に不連続部5,6が形成されると共に、隣合うスリット4,4の対向端部は丸鋸 本体2の径方向に対向すると共に、周方向に互いに入り込んでまたは互いに入り 込む付近まで延びて形成され、上記各スリット4内に防振材7が装填されてなる ことを特徴とする。 In the circular saw 1 of the present invention which can achieve the above-mentioned object, a plurality of slits 4 extending in the circumferential direction and extending in the radial direction are formed on the outer peripheral portion of the circular saw body 2, and each slit 4 is discontinuous at a required position. The portions 5 and 6 are formed, and the opposing ends of the adjacent slits 4 and 4 are formed to face each other in the radial direction of the circular saw body 2 and to enter each other in the circumferential direction or extend to the vicinity of each other. The vibration damping material 7 is loaded in each of the slits 4.
【0005】[0005]
本考案によれば、各スリット4が丸鋸本体2の周方向に延びつつ径方向にも延 びており、しかも周方向に隣合うスリット4,4の対向端部が、丸鋸本体2の径 方向に対向すると共に、周方向に互いに入り込んでまたは互いに入り込む付近ま で延びて形成されているため、切断時に丸鋸本体2の外周部で発生する振動は、 各スリット4により周方向への伝播及び内周部側への伝播を阻止されて、拡大す ることなく丸鋸本体2の外周部に止まる。 According to the present invention, each slit 4 extends in the radial direction while extending in the circumferential direction of the circular saw body 2, and the opposite ends of the slits 4, 4 adjacent in the circumferential direction are the radial direction of the circular saw body 2. Since the slits 4 are formed so as to face each other and extend in such a manner that they enter each other in the circumferential direction or extend to the vicinity of each other, the vibration generated in the outer peripheral portion of the circular saw body 2 during cutting is propagated in the circumferential direction by each slit 4. It is prevented from propagating to the inner peripheral side and stops on the outer peripheral part of the circular saw body 2 without expanding.
【0006】 しかして、丸鋸本体2外周部での振動は、各スリット4内に装填されている防 振材によりエネルギーを吸収されて減衰し、従ってその振動に伴って発生する金 属音が大幅に低減される。また、各スリット4の所要箇所に不連続部5,6が形 成されていることにより、各一連のスリット4が複数の短いスリット部分に分断 され、各スリット4で囲まれた丸鋸本体2部分の飛び出しが防止される。Therefore, the vibration at the outer peripheral portion of the circular saw body 2 is absorbed and attenuated by the vibration-proof material loaded in each slit 4, so that the metallic sound generated with the vibration is generated. Significantly reduced. Further, since the discontinuous portions 5 and 6 are formed at the required positions of each slit 4, each series of slits 4 is divided into a plurality of short slit portions, and the circular saw body 2 surrounded by each slit 4 is formed. The protrusion of the part is prevented.
【0007】[0007]
実施例について図面を参照して説明すると、図1は、鉄材切断用の丸鋸1を示 したもので、例えば直径1120mm、厚さ7mmからなる鋼板製丸鋸本体2の 外周縁にチップ付き鋸歯3が形成されている。この丸鋸本体2の外周部には、周 方向に延びつつ径方向にも延びる山形状のスリット4が、それぞれ同じパターン にして且つ定ピッチで周方向に複数形成されている。 An embodiment will be described with reference to the drawings. FIG. 1 shows a circular saw 1 for cutting an iron material. For example, a steel saw circular saw body 2 having a diameter of 1120 mm and a thickness of 7 mm is provided on the outer peripheral edge of a saw blade with a tip. 3 is formed. On the outer peripheral portion of the circular saw body 2, a plurality of mountain-shaped slits 4 extending in the circumferential direction and extending in the radial direction are formed in the circumferential direction at the same pattern and at a constant pitch.
【0008】 上記各スリット4について更に詳細に説明すれば、各スリット4は、図示のよ うに、小さく弯曲した頂部4aと、この頂部4a両端から周方向両側へ緩やかに 延びつつ径方向に緩やかに延びて弧状を成した両流れ部4b,4cとからなり、 一方の(左側の)流れ部4bは、その山裾部分が他方の流れ部4cよりも長く延 びており、そして頂部4aの中間部に不連続部5が形成されていると共に、長さ が長い方の流れ部4bにはその山裾側に同様な不連続部6が形成されている。各 スリット4は、レーザー加工によって、例えば0.2〜0.5mm程度のスリッ ト幅を有するように貫通形成され、また前記不連続部5,6は、例えば長さ2〜 3mm程度に短く形成される。The slits 4 will be described in more detail. As shown in the drawing, each slit 4 has a slightly curved top portion 4a, and both ends of the top portion 4a. It is composed of two flow sections 4b and 4c that extend and form an arc. One (left side) flow section 4b has its skirt portion extending longer than the other flow section 4c, and is not formed in the middle of the top section 4a. A continuous portion 5 is formed, and a similar discontinuous portion 6 is formed on the hem side of the longer flow portion 4b. Each slit 4 is formed by laser processing so as to have a slit width of, for example, about 0.2 to 0.5 mm, and the discontinuous portions 5 and 6 are formed to be short, for example, about 2 to 3 mm in length. To be done.
【0009】 また、各スリット4は、丸鋸本体2の周方向に定ピッチで複数形成されている が、隣合うスリット4,4の対向端部、即ち、隣合う一方のスリット4における 流れ部4bの先端部と他方のスリット4における流れ部4cの先端部とが、丸鋸 本体2の径方向に対向すると共に、周方向に互いに入り込む付近まで延びた状態 に形成されている。この場合、上記双方の先端部が、丸鋸本体2の径方向に対向 すると共に、周方向に互いに入り込んだ状態に形成されてもよい。A plurality of slits 4 are formed at a constant pitch in the circumferential direction of the circular saw body 2. The slits 4 and 4 adjoin each other, that is, the flow portion of one of the adjacent slits 4. The leading end of 4b and the leading end of the flow portion 4c in the other slit 4 are formed so as to face each other in the radial direction of the circular saw body 2 and extend to the vicinity where they enter each other in the circumferential direction. In this case, both of the above-mentioned tip portions may be formed so as to face each other in the radial direction of the circular saw body 2 and to enter each other in the circumferential direction.
【0010】 そして、上記各スリット4内には、図2に示すように防振材7が装填されてい る。この防振材7としては、各種合成ゴムや半硬質ないし軟質合成樹脂などのゴ ム弾性を有するポリマーが使用される。Then, as shown in FIG. 2, a vibration isolator 7 is loaded in each of the slits 4. As the vibration isolator 7, a polymer having rubber elasticity such as various synthetic rubbers or semi-hard or soft synthetic resins is used.
【0011】 尚、この実施例は、鉄材切断用の丸鋸を例示しているが、アルミニウム等の非 鉄材を切断する丸鋸の場合には、丸鋸本体2の外周端面から径方向内側へ図1の 仮想線図示のように延びる熱膨張吸収用の切込み8が形成される。Although this embodiment exemplifies a circular saw for cutting an iron material, in the case of a circular saw for cutting a non-ferrous material such as aluminum, the circular saw body 2 is radially inward from the outer peripheral end surface thereof. A notch 8 for absorbing thermal expansion, which extends as shown in phantom in FIG. 1, is formed.
【0012】 上述したような構成を有する丸鋸1を使用して切断を行う時に、丸鋸本体2の 外周部に生ずる振動は、各スリット4によって、周方向への伝播及び内周部側へ の伝播を阻止される。即ち、各スリット4が、小さく弯曲した頂部4aと、この 頂部4a両端から周方向に延びつつ径方向に延びて緩やかな弧状を成す両流れ部 4b,4cとで山形に形成されていると共に、隣合う一方のスリット4における 流れ部4bの先端部と他方のスリット4における流れ部4cの先端部とが、丸鋸 本体2の径方向に対向すると共に、周方向に互いに入り込む付近まで延びている ので、丸鋸本体2外周部での振動は、各スリット4の頂部4aによって内周側へ の伝播を阻止され、また両流れ部4b,4cによって内周側への伝播及び周方向 への伝播を阻止されると共に、隣合う両スリット4,4の対向端部によって両ス リット4,4間から内周側への伝播を阻止される。When cutting is performed using the circular saw 1 having the above-described configuration, vibrations generated in the outer peripheral portion of the circular saw body 2 are propagated in the circumferential direction and directed to the inner peripheral side by the slits 4. Is prevented from propagating. That is, each slit 4 is formed in a mountain shape with a small curved top portion 4a and both flow portions 4b and 4c that extend from both ends of the top portion 4a in the circumferential direction and extend in the radial direction to form a gentle arc shape. The leading end of the flow portion 4b in one of the adjacent slits 4 and the leading end of the flow portion 4c in the other slit 4 oppose each other in the radial direction of the circular saw body 2 and extend to the vicinity where they enter each other in the circumferential direction. Therefore, the vibration at the outer peripheral portion of the circular saw body 2 is prevented from propagating to the inner peripheral side by the tops 4a of each slit 4, and propagated to the inner peripheral side and the circumferential direction by both the flow portions 4b and 4c. In addition, the opposite ends of the slits 4 and 4 adjacent to each other prevent the propagation from the slits 4 and 4 to the inner peripheral side.
【0013】 しかして、切断時の振動は拡大することなく丸鋸本体2の外周部分に止まるこ とになるが、この振動は、各スリット4内に装填されている防振材7によりエネ ルギーを吸収されて減衰し、従って振動に伴って生ずる金属音が大幅に低減され 、作業環境が良好なものとなる。Then, the vibration at the time of cutting will stop at the outer peripheral portion of the circular saw body 2 without expanding, but this vibration is caused by the energy-damping material 7 loaded in each slit 4. Is absorbed and attenuated, so that the metallic noise caused by vibration is significantly reduced, and the working environment is improved.
【0014】 また、各スリット4には、頂部4aの中央部及び一方の流れ部4bの山裾側に それぞれ不連続部5,6が形成されて、各一連のスリット4が複数の短いスリッ ト部分に分断されることになるため、各スリット4によって囲まれた丸鋸本体2 部分の飛び出しが有効に阻止され、従って丸鋸本体2にかかる負荷が軽減され、 丸鋸1、特に鋸歯チップの寿命が延びると共に、切断精度の向上が図られる。In addition, in each slit 4, discontinuous portions 5 and 6 are formed on the central portion of the top portion 4a and on the mountain hem side of the one flow portion 4b, and each series of slits 4 has a plurality of short slit portions. Since the circular saw body 2 surrounded by each slit 4 is effectively prevented from popping out, the load on the circular saw body 2 is reduced, and the life of the circular saw 1, especially the saw tooth tip, is reduced. And the cutting accuracy is improved.
【0015】 また、各山形状スリット4は、その一方の流れ部4bはその山裾部分が他方の 流れ部4cより少なくとも周方向に長く形成されるので、その長くなった分だけ 、丸鋸本体2外周部に設けるスリット4の数を少なくすることができる。Further, since each one of the mountain-shaped slits 4 is formed so that the mountain hem portion of one of the flow portions 4b is longer than the other flow portion 4c at least in the circumferential direction, the circular saw body 2 corresponds to the lengthened portion. The number of slits 4 provided on the outer peripheral portion can be reduced.
【0016】 尚、各スリット4は、山形に限定されるものではなく、種々の変更態様が可能 である。また、各スリット4の不連続部は、1つ以上任意に形成することができ る。It should be noted that each slit 4 is not limited to a mountain shape, and various modifications can be made. Further, one or more discontinuous portions of each slit 4 can be formed arbitrarily.
【0017】[0017]
本考案の丸鋸によれば、各スリットが丸鋸本体周方向に延びつつ径方向にも延 び、且つ隣合うスリットの対向端部が、径方向に対向すると共に、周方向に互い に入り込んでまたは互いに入り込む付近まで延びて形成されていることにより、 切断時に丸鋸本体の外周部で発生する振動が、周方向への伝播及び内周部側への 伝播を阻止され、しかも各スリット4内に装填されている防振材によりエネルギ ーを吸収されて減衰するので、振動に伴って発生する金属音が従来の丸鋸に較べ 大幅に低減され、作業環境をきわめて良好なものにすることができる。 According to the circular saw of the present invention, each slit extends in the circumferential direction of the circular saw body while also extending in the radial direction, and the opposing ends of the adjacent slits face each other in the radial direction and enter each other in the circumferential direction. The vibrations generated at the outer peripheral portion of the circular saw body at the time of cutting are prevented from propagating in the circumferential direction and to the inner peripheral portion side, and further, each slit 4 is formed. Energy is absorbed and attenuated by the anti-vibration material loaded inside, so the metallic noise generated by vibration is greatly reduced compared to the conventional circular saw, and the working environment is extremely good. You can
【0018】 また、各スリットの所要箇所に不連続部が形成されて、各一連のスリットが複 数の短いスリット部分に分断されるため、各スリットで囲まれた丸鋸本体部分の 飛び出しを有効に防止でき、従って丸鋸本体にかかる負荷を軽減し、鋸歯チップ の寿命を大幅に延ばすことができると共に、切断精度の著しい向上を図ることが できる。In addition, since a discontinuous portion is formed at a required position of each slit and each series of slits is divided into a plurality of short slit portions, it is effective to project the circular saw body portion surrounded by each slit. Therefore, the load on the circular saw body can be reduced, the life of the saw tooth tip can be greatly extended, and the cutting accuracy can be significantly improved.
【0019】 また、各スリットを山形状に形成した場合には、特に山形の頂部から周方向及 び径方向に延びる両流れ部によって、丸丸鋸本体外周部から内周部への振動の伝 播をより効果的に阻止することができる。また、外観上の体裁も良い。Further, when each slit is formed in a mountain shape, vibration is transmitted from the outer peripheral part of the circular circular saw body to the inner peripheral part by both flow parts extending in the circumferential direction and the radial direction from the top of the mountain shape. Can be blocked more effectively. The appearance is also good.
【提出日】平成5年12月13日[Submission date] December 13, 1993
【手続補正1】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】0019[Correction target item name] 0019
【補正方法】変更[Correction method] Change
【0019】 また、各スリットを山形状に形成した場合には、特に山形の頂部から周方向及 び径方向に延びる両流れ部によって、丸鋸本体外周部から内周部への振動の伝播 をより効果的に阻止することができる。また、外観上の体裁も良い。Further, when each slit is formed in a mountain shape, vibration is propagated from the outer peripheral portion of the circular saw body to the inner peripheral portion by both flow portions extending in the circumferential direction and the radial direction from the top portion of the mountain shape. It can be blocked more effectively. The appearance is also good.
【図1】本考案の一実施例を示す丸鋸の一部側面図であ
る。FIG. 1 is a partial side view of a circular saw according to an embodiment of the present invention.
【図2】図1のA−A線拡大断面図である。FIG. 2 is an enlarged cross-sectional view taken along the line AA of FIG.
1 丸鋸 2 丸鋸本体 3 鋸歯 4 スリット 4a 山形状スリットの頂部 4b 山形状スリットの流れ部 4c 山形状スリットの流れ部 5 不連続部 6 不連続部 7 防振材 1 Circular Saw 2 Circular Saw Main Body 3 Sawtooth 4 Slit 4a Top of Mountain Slit 4b Mountain Stream Slit 4c Mountain Slit Stream 5 Discontinuity 6 Discontinuity 7 Vibration Isolator
Claims (2)
向にも延びるスリットが複数形成され、各スリットには
所要箇所に不連続部が形成されると共に、隣合うスリッ
トの対向端部は丸鋸本体の径方向に対向すると共に、周
方向に互いに入り込んでまたは互いに入り込む付近まで
延びて形成され、上記各スリット内に防振材が装填され
てなる丸鋸。1. A circular saw body is provided with a plurality of slits extending in a circumferential direction and a radial direction on an outer peripheral portion of the circular saw body. Each slit has a discontinuous portion formed at a required position, and an opposing end of an adjacent slit. A circular saw in which the portions are formed so as to face each other in the radial direction of the circular saw body and extend in such a manner that they enter each other in the circumferential direction or extend to the vicinity of each other, and each of the slits is loaded with a vibration isolator.
項1に記載の丸鋸。2. The circular saw according to claim 1, wherein each slit is formed in a mountain shape.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6504393U JPH0733533U (en) | 1993-12-06 | 1993-12-06 | Circular saw |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6504393U JPH0733533U (en) | 1993-12-06 | 1993-12-06 | Circular saw |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0733533U true JPH0733533U (en) | 1995-06-20 |
Family
ID=13275544
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6504393U Withdrawn JPH0733533U (en) | 1993-12-06 | 1993-12-06 | Circular saw |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0733533U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005037503A1 (en) * | 2003-10-17 | 2005-04-28 | Kanefusa Kabushiki Kaisha | Disk-like tool |
-
1993
- 1993-12-06 JP JP6504393U patent/JPH0733533U/en not_active Withdrawn
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005037503A1 (en) * | 2003-10-17 | 2005-04-28 | Kanefusa Kabushiki Kaisha | Disk-like tool |
KR101041312B1 (en) * | 2003-10-17 | 2011-06-14 | 가네후사 가부시키가이샤 | Disk-like tool |
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