JPH11207554A - Bush for rotary tool - Google Patents
Bush for rotary toolInfo
- Publication number
- JPH11207554A JPH11207554A JP2511598A JP2511598A JPH11207554A JP H11207554 A JPH11207554 A JP H11207554A JP 2511598 A JP2511598 A JP 2511598A JP 2511598 A JP2511598 A JP 2511598A JP H11207554 A JPH11207554 A JP H11207554A
- Authority
- JP
- Japan
- Prior art keywords
- bush
- rotary
- rotary tool
- peripheral surface
- shaft
- 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
Landscapes
- Jigs For Machine Tools (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、回転駆動装置の回
転軸と、その回転軸に装着されるフライス、研削ホイー
ル等の回転工具の軸穴との間に介装される回転工具用ブ
シュに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bush for a rotary tool interposed between a rotary shaft of a rotary drive device and a shaft hole of a rotary tool such as a milling machine or a grinding wheel mounted on the rotary shaft. .
【０００２】[0002]
【従来の技術】フライス等の回転工具を回転駆動装置の
回転軸に装着させるとき、回転工具の軸穴径が回転軸よ
り大きくて、回転工具が回転軸に対して同軸的に装着で
きないような場合、あるいは複数の回転工具を回転軸に
装着する前に同軸的に一体で重ねる場合等に、ブシュが
使用される。2. Description of the Related Art When a rotary tool such as a milling cutter is mounted on a rotary shaft of a rotary drive device, the rotary tool has a shaft hole diameter larger than the rotary shaft, and the rotary tool cannot be mounted coaxially with the rotary shaft. A bush is used in such a case or when a plurality of rotary tools are coaxially and integrally stacked before being mounted on a rotary shaft.
【０００３】一般的に用いられるブシュは、外径が回転
工具の軸穴と同径で、内径が回転駆動装置の回転軸径と
同径で、着脱可能なすきまばめの嵌め合い公差で作られ
た単純円筒形である。ブシュを介して回転工具を回転軸
に装着するときは、一般には、まずブシュを回転駆動装
置の回転軸に嵌め、このブシュの外周面に回転工具の軸
穴を嵌め合わせ、回転工具の両側をフランジ金具等で挟
持することにより回転工具を回転軸上に装着しており、
通常、この方法により回転工具を回転駆動装置の回転軸
に取り付けても問題はない。A generally used bush has an outer diameter that is the same as the diameter of the shaft hole of the rotary tool, an inner diameter that is the same as the diameter of the rotary shaft of the rotary driving device, and a fitting tolerance of a removable loose fit. Simple cylindrical shape. When the rotary tool is mounted on the rotary shaft via the bush, generally, first, the bush is fitted on the rotary shaft of the rotary drive device, the shaft hole of the rotary tool is fitted on the outer peripheral surface of the bush, and both sides of the rotary tool are fixed. The rotating tool is mounted on the rotating shaft by clamping it with a flange bracket, etc.
Usually, there is no problem even if the rotary tool is mounted on the rotary shaft of the rotary drive device by this method.
【０００４】[0004]
【発明が解決しようとする課題】しかし、例えば回転工
具を取り付ける回転軸の周りに十分な作業スペースが無
く、回転工具自体も重量物である場合等の種々の理由に
より、上記方法では回転工具の回転軸への装着が困難な
場合に、ブシュを回転工具の軸穴に挿入嵌合してから、
回転工具を回転駆動装置の回転軸に取り付ける場合があ
る。この場合、ブシュを挿入した回転工具を装置の回転
軸に取り付ける途中で回転工具の軸穴からブシュが外れ
ると、取り付け途中の状態でブシュを回転工具の軸穴に
再挿入することが困難なため、一旦回転工具とブシュを
装置の回転軸から外し、再度はじめから取り付けなけれ
ばならず、多大な手間と時間を要するという問題があ
る。However, for various reasons, for example, when there is not enough working space around the rotating shaft on which the rotating tool is mounted and the rotating tool itself is a heavy object, the above-mentioned method requires the rotating tool. When it is difficult to attach to the rotating shaft, insert the bush into the shaft hole of the rotating tool,
In some cases, a rotary tool is attached to a rotary shaft of a rotary drive. In this case, if the bush comes off from the shaft hole of the rotary tool while the rotary tool with the bush inserted is being attached to the rotary shaft of the device, it is difficult to re-insert the bush into the shaft hole of the rotary tool in the middle of installation. However, there is a problem that the rotary tool and the bush need to be once removed from the rotary shaft of the apparatus, and the rotary tool and the bush must be mounted again from the beginning, which requires a great deal of labor and time.
【０００５】また、回転工具とブシュとの嵌め合い公差
及びブシュと回転軸との嵌め合い公差とが重なると、回
転駆動装置の回転軸への回転工具の装着により、両者の
同軸性の精度が悪くなり、場合によってはブシュを使用
することが問題となることもある。本発明は、上記した
問題を解決しようとするもので、回転工具から外れにく
くかつ、回転工具と回転駆動装置の回転軸との同軸性の
精度を損なわない回転工具用ブシュを提供することを目
的とする。Further, when the fitting tolerance between the rotary tool and the bush and the fitting tolerance between the bush and the rotary shaft overlap, the accuracy of the coaxiality between the two is increased by mounting the rotary tool on the rotary shaft of the rotary drive. It gets worse, and in some cases the use of bushes can be problematic. An object of the present invention is to provide a bush for a rotary tool that does not easily come off the rotary tool and does not impair the accuracy of coaxiality between the rotary tool and the rotary shaft of the rotary drive device. And
【０００６】[0006]
【課題を解決するための手段及び発明の効果】上記目的
を達成するために上記請求項１に係る発明の構成上の特
徴は、回転駆動装置の回転軸と、回転軸の外周に装着さ
れる円環形状の回転工具の軸穴との間に介装される円筒
形の回転工具用ブシュにおいて、その外周面上に少なく
とも一部が突出した軟質部材を設けたことにある。ここ
で、軟質部材の材料としては、ゴム、合成樹脂、天然樹
脂、スプリング、粘土状物質等のような弾性変形あるい
は塑性変形可能な物質が使用される。Means for Solving the Problems and Effects of the Invention In order to achieve the above object, the structural features of the invention according to the first aspect are characterized in that it is mounted on a rotating shaft of a rotary driving device and an outer periphery of the rotating shaft. In a cylindrical rotary tool bush interposed between a shaft hole of a ring-shaped rotary tool and a soft member protruding at least partially on an outer peripheral surface thereof. Here, as a material of the soft member, a substance capable of elastic deformation or plastic deformation such as rubber, synthetic resin, natural resin, spring, clay-like substance, or the like is used.
【０００７】上記のように請求項１に係る発明を構成し
たことにより、ブシュを回転工具の軸穴に挿入すると、
ブシュの外周面上に突出した軟質部材が回転工具の軸穴
の内周面に当接し、両者の間の摩擦によりブシュが回転
工具の軸穴内に定着するため、ブシュが軸穴から抜け落
ち難くなる。また、軟質部材をブシュ外周面の周方向に
等間隔に配置して外周面から突出させることにより、回
転工具の軸穴とブシュの外周面とのはめ合い公差の隙間
分の偏りがある程度緩和され、回転工具と回転駆動装置
の回転軸との同軸性が改善される。また、軟質部材が弾
性を有するものであると、回転工具と回転軸の同軸性は
より良好にされる。[0007] With the above configuration of the present invention, when the bush is inserted into the shaft hole of the rotary tool,
The soft member protruding on the outer peripheral surface of the bush abuts on the inner peripheral surface of the shaft hole of the rotary tool, and the bush is fixed in the shaft hole of the rotary tool due to friction between the two, so that the bush does not easily fall off the shaft hole. . Also, by disposing the soft members at equal intervals in the circumferential direction of the bush outer peripheral surface and projecting from the outer peripheral surface, the deviation of the gap of the fitting tolerance between the shaft hole of the rotary tool and the outer peripheral surface of the bush is alleviated to some extent. The coaxiality between the rotary tool and the rotary shaft of the rotary drive is improved. Further, when the soft member has elasticity, the coaxiality between the rotating tool and the rotating shaft is further improved.
【０００８】また、上記請求項２に係る発明の構成上の
特徴は、前記請求項１に記載の回転工具用ブシュにおい
て、軟質部材が、外周面上を１回以上周回して配設され
たことにある。上記のように請求項２に係る発明を構成
したことにより、上記請求項１の発明の効果に加えて、
軟質部材をブシュ外周面上に１回以上周回させて配設し
たことにより、回転工具と回転駆動装置の回転軸との同
軸性はより改善される。According to a second aspect of the present invention, in the bush for a rotary tool according to the first aspect, the soft member is disposed so as to rotate one or more times on the outer peripheral surface. It is in. By configuring the invention according to claim 2 as described above, in addition to the effects of the invention according to claim 1,
By arranging the soft member around the bush outer peripheral surface at least once, the coaxiality between the rotary tool and the rotary shaft of the rotary drive device is further improved.
【０００９】また、上記請求項３に係る発明の構成上の
特徴は、前記請求項１または請求項２に記載の回転工具
用ブシュにおいて、軟質部材が環状であることにある。
上記のように請求項３に係る発明を構成したことによ
り、上記請求項１、請求項２の発明の効果に加えて、軟
質部材が環状であるため、軟質部材のブシュ外周面への
装着が容易になる。A structural feature of the invention according to claim 3 is that in the bush for a rotary tool according to claim 1 or 2, the soft member is annular.
By configuring the invention according to claim 3 as described above, in addition to the effects of the inventions according to claim 1 and claim 2, since the soft member is annular, the soft member can be mounted on the outer peripheral surface of the bush. It will be easier.
【００１０】また、上記請求項４に係る発明の構成上の
特徴は、回転駆動装置の回転軸と、回転軸の外周に装着
される円環形状の回転工具の軸穴との間に介装される円
筒形の回転工具用ブシュにおいて、その外周面上に円周
方向に沿って連続的に又は部分的に突出した凸部を設け
たことにある。A structural feature of the invention according to claim 4 is that an interposition is provided between a rotary shaft of a rotary drive device and a shaft hole of an annular rotary tool mounted on an outer periphery of the rotary shaft. In the above-mentioned cylindrical rotary tool bush, a convex portion continuously or partially protruding along the circumferential direction is provided on the outer peripheral surface thereof.
【００１１】上記のように請求項４に係る発明を構成し
たことにより、このブシュの円周方向に沿って同軸的に
設けた凸部を挟んで両端から２つの回転工具を装着し、
回転工具同士をボルト等の固定治具を用いて固定するこ
とにより、回転工具の軸穴からのブシュの抜け落ちを防
止できる。[0011] With the construction of the invention according to claim 4 described above, two rotary tools are mounted from both ends with a convex portion provided coaxially along the circumferential direction of the bush,
By fixing the rotating tools with a fixing jig such as a bolt, the bush can be prevented from dropping out of the shaft hole of the rotating tool.
【００１２】また、上記請求項５に係る発明の構成上の
特徴は、回転駆動装置の回転軸と、回転軸の外周に装着
される円環形状の回転工具の軸穴との間に介装される円
筒形の回転工具用ブシュにおいて、その内周面上に少な
くとも一部が突出した軟質部材を設けたことにある。A structural feature of the invention according to claim 5 is that an interposition is provided between a rotary shaft of a rotary driving device and a shaft hole of an annular rotary tool mounted on an outer periphery of the rotary shaft. In this case, a soft member protruding at least in part on the inner peripheral surface of the cylindrical rotary tool bush.
【００１３】上記のように請求項５に係る発明を構成し
たことにより、ブシュの貫通孔に回転駆動装置の回転軸
を挿着させると、軟質部材が回転駆動装置の回転軸の外
周面に当接し、両者の間の摩擦によりブシュが回転軸に
定着する。また、軟質部材をブシュの貫通孔の内周面の
周方向に等間隔に配置させることにより、ブシュ内周面
と回転軸の外周面とのはめ合い公差の隙間分の偏りがあ
る程度緩和され、回転工具と回転軸との同軸性が改善さ
れる。この際、軟質部材が弾性を有すると、回転工具と
回転軸の同軸性はより良好にされる。According to the fifth aspect of the present invention, when the rotary shaft of the rotary driving device is inserted into the through hole of the bush, the soft member contacts the outer peripheral surface of the rotary shaft of the rotary driving device. And the bushing is fixed to the rotating shaft by friction between the two. Also, by disposing the soft members at equal intervals in the circumferential direction of the inner peripheral surface of the through hole of the bush, the deviation of the gap of the fitting tolerance between the inner peripheral surface of the bush and the outer peripheral surface of the rotary shaft is reduced to some extent, The coaxiality between the rotating tool and the rotating shaft is improved. At this time, if the soft member has elasticity, the coaxiality between the rotating tool and the rotating shaft is further improved.
【００１４】また、上記請求項６に係る発明の構成上の
特徴は、前記請求項５に記載の回転工具用ブシュにおい
て、軟質部材が、内周面上を１回以上周回して配設され
たことにある。上記のように請求項６に係る発明を構成
したことにより、上記請求項５の発明の効果に加えて、
軟質部材をブシュ内周面上に１回以上周回させて配設し
たことにより、回転工具と回転駆動装置の回転軸の同軸
性はより改善される。According to a sixth aspect of the present invention, in the bush for a rotary tool according to the fifth aspect, the soft member is disposed so as to rotate one or more times on the inner peripheral surface. That is. By configuring the invention according to claim 6 as described above, in addition to the effect of the invention according to claim 5,
The coaxiality of the rotating tool and the rotating shaft of the rotary driving device is further improved by arranging the soft member so as to be rotated one or more times on the inner peripheral surface of the bush.
【００１５】また、上記請求項７に係る発明の構成上の
特徴は、前記請求項５または請求項６に記載の回転工具
用ブシュにおいて、軟質部材が環状であることにある。
上記のように請求項７に係る発明を構成したことによ
り、上記請求項５、請求項６の発明の効果に加えて、軟
質部材が環状であるため、軟質部材のブシュ内周面への
装着が容易になる。A structural feature of the invention according to claim 7 is that in the bush for a rotary tool according to claim 5 or 6, the soft member is annular.
Since the invention according to claim 7 is configured as described above, in addition to the effects of the invention according to claims 5 and 6, since the soft member is annular, the soft member is mounted on the inner peripheral surface of the bush. Becomes easier.
【００１６】[0016]
【発明の実施の形態】以下、本発明の一実施の形態を図
面を用いて説明すると、図１及び図２は、第１の実施形
態に係る回転工具１１用のブシュ２０を一部破断面図及
び断面図により示したものである。ブシュ２０は、金属
製で円筒形の本体２１を有している。本体２１は、中心
に回転駆動装置の回転軸の外径と略同一寸法の内径であ
る貫通孔２２を有しており、外周面には周方向の６箇所
に等間隔で、かつ軸方向の両端近傍を除いて直線状の溝
２３を設けている。溝２３には、軟質部材であるゴム製
の棒状のゴム弾性体２４が埋設され、その表面部分２４
ａが本体２１の外周面からわずかに突出している。軟質
部材としては、ゴムの他に、合成樹脂、天然樹脂、スプ
リング、粘土状物質等のような弾性変形あるいは塑性変
形可能な物質を使用できる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIGS. 1 and 2 show a bush 20 for a rotary tool 11 according to a first embodiment, partially cut away. FIG. The bush 20 has a cylindrical main body 21 made of metal. The main body 21 has a through hole 22 having an inner diameter substantially the same as the outer diameter of the rotary shaft of the rotary driving device at the center, and has six circumferentially-spaced holes on the outer peripheral surface at equal intervals and in the axial direction. A linear groove 23 is provided except for the vicinity of both ends. In the groove 23, a rubber elastic body 24 made of rubber, which is a soft member, is buried.
a slightly protrudes from the outer peripheral surface of the main body 21. As the soft member, in addition to rubber, a material capable of elastic deformation or plastic deformation such as a synthetic resin, a natural resin, a spring, a clay-like material, or the like can be used.
【００１７】このブシュ２０を、図３に示すように、回
転工具１１の軸穴１１ａに挿入することにより、ゴム弾
性体２４が軸穴１１ａの内周面に当接し、両者の間の摩
擦によりブシュ２０が回転工具１１の軸穴１１ａ内に定
着し、抜け落ち難くなる。また、ゴム弾性体２４を本体
２１外周面の周方向に等間隔に配置させることにより、
回転工具１１の軸穴１１ａとブシュ２０本体２１の外周
面とのはめ合い公差の隙間分の偏りがある程度緩和さ
れ、回転工具１１と回転駆動装置（図示しない）の回転
軸１２との同軸性が改善される。この際、ゴム弾性体２
４が弾性を有するので、回転工具１１と回転軸１２の同
軸性はより良好になる。By inserting the bush 20 into the shaft hole 11a of the rotary tool 11, as shown in FIG. 3, the rubber elastic body 24 comes into contact with the inner peripheral surface of the shaft hole 11a, and the friction between the two. The bush 20 is settled in the shaft hole 11a of the rotary tool 11 and hardly falls off. Further, by disposing the rubber elastic bodies 24 at equal intervals in the circumferential direction of the outer peripheral surface of the main body 21,
The deviation of the gap of the fitting tolerance between the shaft hole 11a of the rotating tool 11 and the outer peripheral surface of the bush 20 main body is alleviated to some extent, and the coaxiality between the rotating tool 11 and the rotating shaft 12 of a rotation driving device (not shown) is improved. Be improved. At this time, the rubber elastic body 2
Since 4 has elasticity, the coaxiality between the rotating tool 11 and the rotating shaft 12 is further improved.
【００１８】つぎに、第２の実施形態について説明す
る。ブシュ３０は、図４に示すように、金属製で円筒形
の本体３１を有している。本体３１は、中心に回転駆動
装置の回転軸の外径と略同一寸法の内径である貫通孔３
２を有しており、外周面には軸方向の両端近傍を除いて
幅の狭い溝３３を軸方向に対して同軸的にかつ螺旋形状
に周回させて設けている。溝３３には、ひも状のゴム弾
性体３４が埋設され、その表面部分３４ａが本体３１の
外周面からわずかに突出している。このブシュ３０につ
いても、上記第１の実施形態に示したと同様の効果が得
られると共に、ゴム弾性体３４を本体３１外周面に軸方
向に対して同軸的に螺旋状に配設したことにより、回転
工具１１と回転駆動装置の回転軸１２との同軸性はより
改善される。Next, a second embodiment will be described. As shown in FIG. 4, the bush 30 has a cylindrical main body 31 made of metal. The main body 31 has a through hole 3 having an inner diameter substantially the same as the outer diameter of the rotary shaft of the rotary drive device at the center.
In the outer peripheral surface, a narrow groove 33 is provided coaxially and spirally in the axial direction except in the vicinity of both ends in the axial direction. A string-shaped rubber elastic body 34 is embedded in the groove 33, and a surface portion 34 a thereof slightly protrudes from the outer peripheral surface of the main body 31. With this bush 30 as well, the same effects as shown in the first embodiment can be obtained, and the rubber elastic body 34 is coaxially and spirally disposed on the outer peripheral surface of the main body 31 in the axial direction. The coaxiality between the rotary tool 11 and the rotary shaft 12 of the rotary drive is further improved.
【００１９】つぎに、第３の実施形態について説明す
る。ブシュ４０は、図５に示すように、金属製で円筒形
の本体４１を有している。本体４１は、中心に回転駆動
装置の回転軸の外径と略同一寸法の内径である貫通孔４
２を有しており、外周面には軸方向の２箇所に同軸的に
軸方向長さの異なるリング状の溝４３，４４を設けてい
る。溝４３，４４には、ゴム製で軸方向長さが溝４３，
４４に合わされた筒状のゴム弾性体４５，４６が外嵌さ
れ、その表面部分４５ａ，４６ａが本体４１の外周面か
らわずかに突出している。Next, a third embodiment will be described. The bush 40 has a cylindrical main body 41 made of metal, as shown in FIG. The main body 41 has a through hole 4 having an inner diameter substantially the same as the outer diameter of the rotary shaft of the rotary drive device at the center.
2, and ring-shaped grooves 43 and 44 having different axial lengths are provided coaxially at two positions in the axial direction on the outer peripheral surface. The grooves 43, 44 are made of rubber and have an axial length of 43, 44.
Cylindrical rubber elastic bodies 45 and 46 fitted to 44 are externally fitted, and the surface portions 45 a and 46 a slightly protrude from the outer peripheral surface of the main body 41.
【００２０】このブシュ４０は、図６に示すように、ゴ
ム弾性体４５，４６の軸方向長さに合わせた軸方向長さ
でかつ外径の異なる回転工具１３，１４の軸穴に挿入さ
れる。ただし、回転工具１３，１４の外径の大小はこれ
に限るものではない。このブシュ４０についても、上記
第１の実施形態に示したと同様の効果が得られると共
に、ゴム弾性体４５，４６が筒状であるため、ゴム弾性
体４５，４６のブシュ４０外周面への装着が容易にな
る。なお、ブシュ４０に設ける溝及びゴム弾性体の数に
ついては、２個に限らず、１個ないし３個以上であって
もよい。As shown in FIG. 6, the bush 40 is inserted into the shaft holes of the rotary tools 13, 14 having an axial length corresponding to the axial length of the rubber elastic bodies 45, 46 and having different outer diameters. You. However, the size of the outer diameter of the rotary tools 13 and 14 is not limited to this. With this bush 40, the same effect as that shown in the first embodiment is obtained, and since the rubber elastic bodies 45 and 46 are cylindrical, the rubber elastic bodies 45 and 46 are mounted on the outer peripheral surface of the bush 40. Becomes easier. The number of grooves and rubber elastic bodies provided in the bush 40 is not limited to two, but may be one to three or more.
【００２１】つぎに、第４の実施形態について説明す
る。ブシュ５０は、図７に示すように、金属製で円筒形
の本体５１を有している。本体５１は、中心に回転駆動
装置の回転軸の外径と略同一寸法の内径である貫通孔
（図示しない）を有しており、外周面には軸方向の両端
近傍を除いて幅の狭い溝５３を周方向に沿って蛇行形状
に周回させて設けている。溝５３には、ひも状のゴム弾
性体５４が埋設され、その表面部分５４ａが本体５１の
外周面からわずかに突出している。このブシュ５０につ
いても、上記第１の実施形態に示したと同様の効果が得
られると共に、ゴム弾性体５４を本体５１外周面に蛇行
状に配設したことにより、回転工具と回転駆動装置の回
転軸の同軸性はより改善される。Next, a fourth embodiment will be described. The bush 50 has a cylindrical main body 51 made of metal, as shown in FIG. The main body 51 has a through hole (not shown) having an inner diameter substantially the same as the outer diameter of the rotary shaft of the rotary drive device at the center, and has a narrow outer peripheral surface except for near both ends in the axial direction. The groove 53 is provided in a meandering shape along the circumferential direction. A string-shaped rubber elastic body 54 is embedded in the groove 53, and a surface portion 54 a thereof slightly protrudes from the outer peripheral surface of the main body 51. With this bush 50, the same effect as that shown in the first embodiment can be obtained, and the rubber elastic body 54 is arranged in a meandering shape on the outer peripheral surface of the main body 51, so that the rotation of the rotary tool and the rotation driving device The coaxiality of the shaft is further improved.
【００２２】つぎに、第５の実施形態について説明す
る。ブシュ６０は、図８に示すように、金属製で円筒形
の本体６１を有している。本体６１は、中心に回転駆動
装置の回転軸の外径と略同一寸法の内径である貫通孔６
２を有しており、外周面には軸方向中間位置にて同軸的
に突出した断面三角形のリング状の凸部６３を一体的に
設けている。凸部６３は、ブシュ６０を例えば旋盤や研
削盤で削り出して製造する際に形成することができる。
このブシュ６０は、図９に示すように、凸部６３を挟ん
で両端から２つの回転工具１５，１６を装着し、回転工
具１５，１６同士をボルトＢ等を用いて固定することに
より、ブシュ６０からの回転工具１５，１６の抜け落ち
を防止できる。Next, a fifth embodiment will be described. As shown in FIG. 8, the bush 60 has a cylindrical main body 61 made of metal. The main body 61 has a through hole 6 having an inner diameter substantially the same as the outer diameter of the rotary shaft of the rotary drive device at the center.
2, and a ring-shaped convex portion 63 having a triangular cross section and coaxially protruding at an axially intermediate position is provided integrally on the outer peripheral surface. The convex portion 63 can be formed when the bush 60 is manufactured by being cut out with, for example, a lathe or a grinding machine.
As shown in FIG. 9, the bush 60 is provided with two rotary tools 15 and 16 from both ends with the convex portion 63 interposed therebetween, and the rotary tools 15 and 16 are fixed to each other using bolts B or the like. It is possible to prevent the rotating tools 15 and 16 from falling off the wheel 60.
【００２３】なお、凸部６３については、ブシュ６０の
周方向の全体でなく部分的に設けるようにしてもよい。
また、凸部６３を本体６１に一体で設ける代わりに、図
１０に示すように、本体６１に同軸的にリング状の溝６
４を設け、溝６４にゴム等で形成されたリング状の突出
部材６５を装着させるようにしてもよい。突出部材６５
の突出部分の断面形状については円弧形であっても、三
角形であってもよい。また、凸部６３については、重ね
られる各回転工具の軸穴内周面の端縁の面取りによりで
きる空間に収まる程度のもので十分であるが、突出する
程度を必要により大きくし、突出する部分の大きさに合
わせて空間を作るべく意図的に回転工具の軸穴内周面の
端縁を削除するようにしてもよい。The protrusion 63 may be provided not partially but entirely in the circumferential direction of the bush 60.
Further, instead of providing the convex portion 63 integrally with the main body 61, as shown in FIG.
4 may be provided, and a ring-shaped projecting member 65 made of rubber or the like may be attached to the groove 64. Projecting member 65
The cross-sectional shape of the protruding portion may be an arc shape or a triangular shape. In addition, the protrusion 63 is sufficient to fit in the space formed by chamfering the edge of the inner peripheral surface of the shaft hole of each of the rotating tools to be superimposed. The edge of the inner peripheral surface of the shaft hole of the rotary tool may be intentionally deleted so as to create a space according to the size.
【００２４】つぎに、第６の実施形態について説明す
る。ブシュ７０は、図１１，１２に示すように、金属製
で円筒形の本体７１を有している。本体７１は、中心に
回転駆動装置の回転軸の外径と略同一寸法の内径である
貫通孔７２を有しており、貫通孔７２の内周面には周方
向の４箇所に等間隔で、かつ軸方向の両端近傍を除いて
直線状の溝７３を設けている。溝７３には、軟質部材で
あるゴム製の棒状のゴム弾性体７４が埋設され、その表
面部分７４ａが内周面からわずかに突出している。Next, a sixth embodiment will be described. The bush 70 has a cylindrical main body 71 made of metal, as shown in FIGS. The main body 71 has, at the center thereof, a through hole 72 having an inner diameter substantially the same as the outer diameter of the rotary shaft of the rotary driving device. The inner peripheral surface of the through hole 72 is provided at four circumferential locations at equal intervals. A linear groove 73 is provided except for the vicinity of both ends in the axial direction. A rubber rod-shaped rubber elastic body 74 made of a soft material, such as a rubber member, is embedded in the groove 73, and its surface portion 74a slightly protrudes from the inner peripheral surface.
【００２５】このブシュ７０を、図１３に示すように、
回転工具１１の軸穴１１ａに挿入し、ブシュ７０の貫通
孔７２に回転駆動装置の回転軸１２を挿着させた。これ
により、ゴム弾性体７４が回転軸１２の外周面に当接
し、両者の間の摩擦によりブシュ７０が回転軸１２に定
着する。また、ゴム弾性体７４を貫通孔７２の内周面の
周方向に等間隔に配置させることにより、ブシュ７０内
周面と回転軸１２の外周面とのはめ合い公差の隙間分の
偏りがある程度緩和され、回転工具１１と回転駆動装置
（図示しない）の回転軸１２との同軸性が改善される。
この際、ゴム弾性体７４が弾性を有するので、回転工具
１１と回転軸１２の同軸性はより良好になる。This bush 70 is, as shown in FIG.
The rotary shaft was inserted into the shaft hole 11 a of the rotary tool 11, and the rotary shaft 12 of the rotary driving device was inserted into the through hole 72 of the bush 70. As a result, the rubber elastic body 74 comes into contact with the outer peripheral surface of the rotating shaft 12, and the bush 70 is fixed to the rotating shaft 12 by friction between the two. Further, by disposing the rubber elastic bodies 74 at equal intervals in the circumferential direction of the inner peripheral surface of the through hole 72, the deviation of the gap of the fitting tolerance between the inner peripheral surface of the bush 70 and the outer peripheral surface of the rotary shaft 12 can be reduced to some extent. As a result, the coaxiality between the rotary tool 11 and the rotary shaft 12 of the rotary drive (not shown) is improved.
At this time, since the rubber elastic body 74 has elasticity, the coaxiality between the rotating tool 11 and the rotating shaft 12 is further improved.
【００２６】つぎに、第７の実施形態について説明す
る。ブシュ８０は、図１４に示すように、金属製で円筒
形の本体８１を有している。本体８１は、中心に回転駆
動装置の回転軸の外径と略同一寸法の内径である貫通孔
８２を有しており、貫通孔８２の内周面には軸方向の両
端近傍を除いて幅の狭い溝８３を軸方向に沿って螺旋形
状に周回させて設けている。溝８３には、ゴム製でひも
状のゴム弾性体８４が埋設され、その表面部分（図示し
ない）が本体８１の内周面からわずかに突出している。
このブシュ８０についても、上記第６の実施形態に示し
たと同様の効果が得られると共に、ゴム弾性体８４を本
体８１外周面に螺旋状に配設したことにより、回転工具
と回転駆動装置の回転軸との同軸性はより改善される。Next, a seventh embodiment will be described. The bush 80 has a cylindrical main body 81 made of metal, as shown in FIG. The main body 81 has, at the center thereof, a through hole 82 having an inner diameter substantially the same as the outer diameter of the rotary shaft of the rotary drive device. The inner peripheral surface of the through hole 82 has a width except for near both ends in the axial direction. Is provided so as to be spirally circulated along the axial direction. A rubber elastic body 84 in the form of a string is embedded in the groove 83, and its surface (not shown) slightly protrudes from the inner peripheral surface of the main body 81.
With this bush 80, the same effect as that described in the sixth embodiment can be obtained, and the rubber elastic body 84 is spirally disposed on the outer peripheral surface of the main body 81, so that the rotation of the rotary tool and the rotary drive device can be achieved. The coaxiality with the axis is further improved.
【００２７】つぎに、第８の実施形態について説明す
る。ブシュ９０は、図１５に示すように、金属製で円筒
形の本体９１を有している。本体９１は、中心に回転駆
動装置の回転軸の外径と略同一寸法の内径である貫通孔
９２を有し、貫通孔９２の内周面には軸方向の両端近傍
を除く中間部分に同軸的に筒状の溝９３を設けている。
溝９３には、ゴム製で軸方向長さが溝９３に合わされた
筒状のゴム弾性体９４が挿嵌され、その表面部分９４ａ
が本体９１の内周面からわずかに突出している。Next, an eighth embodiment will be described. As shown in FIG. 15, the bush 90 has a cylindrical main body 91 made of metal. The main body 91 has, at the center, a through hole 92 having an inner diameter substantially the same as the outer diameter of the rotation shaft of the rotary drive device. A cylindrical groove 93 is provided.
A cylindrical rubber elastic body 94 made of rubber and having an axial length matched with the groove 93 is inserted into the groove 93, and its surface portion 94 a
Slightly project from the inner peripheral surface of the main body 91.
【００２８】このブシュ９０の貫通孔９２に、回転駆動
装置の回転軸（図示しない）を挿着させることにより、
ゴム弾性体９４が回転軸の外周面に当接し、両者の間の
摩擦によりブシュ９０が回転軸に定着する。また、ゴム
弾性体９４が筒状であるため、ゴム弾性体９４のブシュ
９０の貫通孔９２への挿着が容易になる。By inserting a rotary shaft (not shown) of a rotary driving device into the through hole 92 of the bush 90,
The rubber elastic body 94 comes into contact with the outer peripheral surface of the rotating shaft, and the bush 90 is fixed to the rotating shaft by friction between the two. Further, since the rubber elastic body 94 is cylindrical, it is easy to insert the rubber elastic body 94 into the through hole 92 of the bush 90.
【００２９】つぎに、第９の実施形態について説明す
る。上記各実施形態においては、ブシュの表面側または
裏面側のいずれか一方に溝を設け、溝にゴム弾性体を装
着して使用しているが、第９の実施形態では、図１６，
１７に示すように、ブシュ１００の本体１０１に、その
外周面と貫通孔１０２の内周面との間に抜けるスリット
（または孔）１０３を設け、このスリット（または孔）
１０３にゴム弾性体１０４を嵌め込むように装着するよ
うにした。Next, a ninth embodiment will be described. In each of the above embodiments, a groove is provided on one of the front side and the back side of the bush, and a rubber elastic body is attached to the groove for use. However, in the ninth embodiment, FIG.
As shown in FIG. 17, the main body 101 of the bush 100 is provided with a slit (or hole) 103 which passes through between the outer peripheral surface and the inner peripheral surface of the through hole 102, and the slit (or hole) 103 is provided.
The rubber elastic body 104 was fitted so as to be fitted into 103.
【００３０】第９の実施形態においては、外周面に突出
したゴム弾性体１０４により、回転工具の軸穴に挿嵌し
たブシュ１００が軸穴内に定着し抜け落ちが防止される
と共に、内周面に突出したゴム弾性体１０４により、ブ
シュ１００内周面と回転駆動装置の回転軸外周面とのは
め合い公差の隙間分の偏りが緩和され、回転工具と回転
軸との同軸性が改善される効果とが、併せて得られる。In the ninth embodiment, the rubber elastic body 104 protruding from the outer peripheral surface prevents the bush 100 inserted into the shaft hole of the rotating tool from being fixed in the shaft hole and preventing the bush 100 from falling off. The protruding rubber elastic body 104 reduces the deviation of the gap of the fitting tolerance between the inner peripheral surface of the bush 100 and the outer peripheral surface of the rotary shaft of the rotary drive device, and improves the coaxiality between the rotary tool and the rotary shaft. Are also obtained.
【００３１】なお、上記各実施形態において、各ゴム弾
性体は、ブシュ外周面または内周面に溝を設けることに
より、溝内にゴム弾性体をそのまま、又は接着剤等を用
いて貼り付けて装着され、ゴム弾性体の脱落や位置ずれ
を起こし難くしているが、これに代えて、ブシュに溝を
設けることなく、直接ゴム弾性体をブシュに嵌合しある
いは接着剤等で貼り付けることにより、ブシュ外周面ま
たは内周面に設けるようにしてもよい。In each of the above embodiments, each rubber elastic body is provided with a groove on the outer circumferential surface or the inner circumferential surface of the bush, so that the rubber elastic body can be adhered in the groove as it is or by using an adhesive or the like. The rubber elastic body is attached to prevent the rubber elastic body from falling off or displacing.However, instead of this, the rubber elastic body is directly fitted into the bush or attached with an adhesive, etc., without providing a groove in the bush. Accordingly, the bush may be provided on the outer peripheral surface or the inner peripheral surface.
【００３２】また、上記各実施形態を、相互に適宜組み
合わせて実施することも可能である。例えば、第１、第
５及び第６の実施形態を組み合わせた例を図１８に示
す。これにより、各各実施形態で得られる効果をすべて
含む効果が得られる。Further, the above embodiments can be implemented in combination with each other as appropriate. For example, FIG. 18 shows an example in which the first, fifth, and sixth embodiments are combined. Thereby, effects including all effects obtained in the respective embodiments can be obtained.
【００３３】さらに、上記第２から第９実施形態におい
ても、第１の実施形態と同様に、ゴム弾性体の代わり
に、軟質部材としては、合成樹脂、天然樹脂、スプリン
グ、粘土状物質等のような弾性変形あるいは塑性変形可
能な物質を使用できる。Further, in the second to ninth embodiments, similarly to the first embodiment, instead of the rubber elastic body, the soft member may be a synthetic resin, a natural resin, a spring, a clay-like material, or the like. Such an elastically or plastically deformable substance can be used.
【図１】本発明の第１の実施形態である回転工具用ブシ
ュを概略的に示す一部破断面図である。FIG. 1 is a partially broken sectional view schematically showing a bush for a rotary tool according to a first embodiment of the present invention.
【図２】同回転工具用ブシュの図１に示すＩＩ−ＩＩ線
方向の断面図である。FIG. 2 is a sectional view of the rotary tool bush taken along a line II-II shown in FIG. 1;
【図３】同回転工具用ブシュの使用状態を示す断面図で
ある。FIG. 3 is a sectional view showing a use state of the rotary tool bush.
【図４】第２の実施形態である回転工具用ブシュを示す
一部破断面図である。FIG. 4 is a partially broken sectional view showing a bush for a rotary tool according to a second embodiment.
【図５】第３の実施形態である回転工具用ブシュを示す
一部破断面図である。FIG. 5 is a partially broken sectional view showing a bush for a rotary tool according to a third embodiment.
【図６】同回転工具用ブシュの使用状態を示す断面図で
ある。FIG. 6 is a cross-sectional view showing a use state of the rotary tool bush.
【図７】第４の実施形態である回転工具用ブシュを示す
正面図である。FIG. 7 is a front view showing a bush for a rotary tool according to a fourth embodiment.
【図８】第５の実施形態である回転工具用ブシュを示す
一部破断面図である。FIG. 8 is a partially broken sectional view showing a bush for a rotary tool according to a fifth embodiment.
【図９】同回転工具用ブシュの使用状態を示す断面図で
ある。FIG. 9 is a cross-sectional view showing a use state of the rotary tool bush.
【図１０】第５の実施形態の変形例である回転工具用ブ
シュを示す一部破断面図である。FIG. 10 is a partially broken cross-sectional view showing a bush for a rotary tool which is a modification of the fifth embodiment.
【図１１】第６の実施形態である回転工具用ブシュの図
１２に示すＮ−Ｎ線方向の断面図である。11 is a cross-sectional view of the bush for a rotary tool according to a sixth embodiment, taken along line NN shown in FIG. 12;
【図１２】同回転工具用ブシュの図１１に示すＭ−Ｍ線
方向の断面図である。FIG. 12 is a sectional view of the rotary tool bush taken along the line MM shown in FIG. 11;
【図１３】同回転工具用ブシュの使用状態を示す断面図
である。FIG. 13 is a sectional view showing a use state of the rotary tool bush.
【図１４】第７の実施形態である回転工具用ブシュを示
す正面図である。FIG. 14 is a front view showing a bush for a rotary tool according to a seventh embodiment.
【図１５】第８の実施形態である回転工具用ブシュを示
す一部破断面図である。FIG. 15 is a partially broken sectional view showing a bush for a rotary tool according to an eighth embodiment.
【図１６】第９の実施形態である回転工具用ブシュを示
す一部破断面図である。FIG. 16 is a partially broken sectional view showing a bush for a rotary tool according to a ninth embodiment.
【図１７】同回転工具用ブシュの図１６に示すＯ−Ｏ線
方向の断面図である。FIG. 17 is a cross-sectional view of the rotary tool bush taken along the line OO shown in FIG. 16;
【図１８】第１、第５及び第６の実施形態を組み合わせ
た回転工具用ブシュの使用状態を示す断面図である。FIG. 18 is a cross-sectional view illustrating a use state of a rotary tool bush in which the first, fifth, and sixth embodiments are combined.
１１…回転工具、１１ａ…軸穴、１２…回転軸、１３，
１４…回転工具、１５，１６…回転工具、２０…ブシ
ュ、２１…本体、２２…貫通孔、２３…溝、２４…ゴム
弾性体、３０…ブシュ、３１…本体、３２…貫通孔、３
３…溝、３４…ゴム弾性体、４０…ブシュ、４１…本
体、４２…貫通孔、４３，４４…溝、４５，４６…ゴム
弾性体、５０…ブシュ、５１…本体、５３…溝、５４…
ゴム弾性体、６０…ブシュ、６１…本体、６２…貫通
孔、６３…凸部、６４…溝、６５…突出部材、７０…ブ
シュ、７１…本体、７２…貫通孔、７３…溝、７４…ゴ
ム弾性体、８０…ブシュ、８１…本体、８２…貫通孔、
８３…溝、８４…ゴム弾性体、９０…ブシュ、９１…本
体、９２…貫通孔、９３…溝、９４…ゴム弾性体、１０
０…ブシュ、１０１…本体、１０２…貫通孔、１０３…
スリット（孔）、１０４…ゴム弾性体。11: rotating tool, 11a: shaft hole, 12: rotating shaft, 13,
14 ... rotating tool, 15, 16 ... rotating tool, 20 ... bush, 21 ... body, 22 ... through hole, 23 ... groove, 24 ... rubber elastic body, 30 ... bush, 31 ... body, 32 ... through hole, 3
3 ... groove, 34 ... rubber elastic body, 40 ... bush, 41 ... main body, 42 ... through hole, 43, 44 ... groove, 45, 46 ... rubber elastic body, 50 ... bush, 51 ... main body, 53 ... groove, 54 …
Rubber elastic body, 60 bush, 61 body, 62 through hole, 63 convex part, 64 groove, 65 projecting member, 70 bush, 71 body, 72 through hole, 73 groove, 74 ... Rubber elastic body, 80 ... bush, 81 ... body, 82 ... through-hole,
83 ... groove, 84 ... rubber elastic body, 90 ... bush, 91 ... body, 92 ... through hole, 93 ... groove, 94 ... rubber elastic body, 10
0: bush, 101: main body, 102: through hole, 103:
Slit (hole), 104: rubber elastic body.
Claims (7)
周に装着される円環形状の回転工具の軸穴との間に介装
される円筒形の回転工具用ブシュにおいて、その外周面
上に少なくとも一部が突出した軟質部材を設けたことを
特徴とする回転工具用ブシュ。1. A cylindrical rotary tool bushing interposed between a rotary shaft of a rotary drive device and a shaft hole of an annular rotary tool mounted on the outer periphery of the rotary shaft. A bush for a rotary tool, wherein a soft member at least partially protruding from a surface is provided.
において、前記軟質部材が、前記外周面上を１回以上周
回して配設されたことを特徴とする回転工具用ブシュ。2. The bush for a rotary tool according to claim 1, wherein the soft member is disposed so as to go around the outer peripheral surface at least once.
転工具用ブシュにおいて、前記軟質部材が環状であるこ
とを特徴とする回転工具用ブシュ。3. The bush for a rotary tool according to claim 1, wherein the soft member is annular.
周に装着される円環形状の回転工具の軸穴との間に介装
される円筒形の回転工具用ブシュにおいて、その外周面
上に円周方向に沿って連続的に又は部分的に突出した凸
部を設けたことを特徴とする回転工具用ブシュ。4. A cylindrical rotary tool bush interposed between a rotary shaft of a rotary drive device and a shaft hole of an annular rotary tool mounted on the outer periphery of the rotary shaft. A bush for a rotary tool, wherein a convex portion continuously or partially protruding along a circumferential direction is provided on a surface.
周に装着される円環形状の回転工具の軸穴との間に介装
される円筒形の回転工具用ブシュにおいて、その内周面
上に少なくとも一部が突出した軟質部材を設けたことを
特徴とする回転工具用ブシュ。5. A cylindrical rotary tool bush interposed between a rotary shaft of a rotary drive device and a shaft hole of an annular rotary tool mounted on the outer periphery of the rotary shaft. A bush for a rotary tool, wherein a soft member at least partially protruding on a peripheral surface is provided.
において、前記軟質部材が、前記内周面上を１回以上周
回して配設されたことを特徴とする回転工具用ブシュ。6. The bush for a rotary tool according to claim 5, wherein the soft member is disposed so as to rotate one or more times on the inner peripheral surface.
転工具用ブシュにおいて、前記軟質部材が環状であるこ
とを特徴とする回転工具用ブシュ。7. The bush for a rotary tool according to claim 5, wherein the soft member is annular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2511598A JPH11207554A (en) | 1998-01-21 | 1998-01-21 | Bush for rotary tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2511598A JPH11207554A (en) | 1998-01-21 | 1998-01-21 | Bush for rotary tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11207554A true JPH11207554A (en) | 1999-08-03 |
Family
ID=12156940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2511598A Pending JPH11207554A (en) | 1998-01-21 | 1998-01-21 | Bush for rotary tool |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11207554A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012192433A (en) * | 2011-03-16 | 2012-10-11 | Sumitomo Electric Ind Ltd | Attachable/detachable friction-stirring joining tool |
| CN104960010A (en) * | 2015-06-09 | 2015-10-07 | 朱德金 | Rubber gasket cutting wheel |
| CN109176097A (en) * | 2018-10-15 | 2019-01-11 | 武汉船用机械有限责任公司 | A kind of processing tool of thin and long units exterior arc surface |
-
1998
- 1998-01-21 JP JP2511598A patent/JPH11207554A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012192433A (en) * | 2011-03-16 | 2012-10-11 | Sumitomo Electric Ind Ltd | Attachable/detachable friction-stirring joining tool |
| CN104960010A (en) * | 2015-06-09 | 2015-10-07 | 朱德金 | Rubber gasket cutting wheel |
| CN109176097A (en) * | 2018-10-15 | 2019-01-11 | 武汉船用机械有限责任公司 | A kind of processing tool of thin and long units exterior arc surface |
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