JPH08229715A - Rotary cutting tool - Google Patents
Rotary cutting toolInfo
- Publication number
- JPH08229715A JPH08229715A JP3511495A JP3511495A JPH08229715A JP H08229715 A JPH08229715 A JP H08229715A JP 3511495 A JP3511495 A JP 3511495A JP 3511495 A JP3511495 A JP 3511495A JP H08229715 A JPH08229715 A JP H08229715A
- Authority
- JP
- Japan
- Prior art keywords
- rotary
- body housing
- main body
- cutting tool
- shafts
- 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
- Drilling And Boring (AREA)
- Milling, Drilling, And Turning Of Wood (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、回転切削工具に関し、
詳しくは例えば壁材の背後に埋め込まれているスイッ
チ、コンセント、アンテナターミナル等の配線ボックス
の四角形開口に合致する孔を壁材に明けるための技術に
関する。FIELD OF THE INVENTION The present invention relates to a rotary cutting tool,
More specifically, for example, the present invention relates to a technique for forming a hole in a wall material that matches a rectangular opening of a wiring box such as a switch, an outlet, or an antenna terminal embedded behind the wall material.
【０００２】[0002]
【従来の技術】従来より、壁材の背後に埋め込まれてい
るスイッチ、コンセント、アンテナターミナル等の配線
ボックスの四角形開口に合致する孔を明ける場合、手挽
き鋸等を用いて手作業で壁材に孔を明けており、このた
め能率が悪く、住宅や工場建築のように多くの孔を明け
る必要がある場合には、非常な手間がかかっていた。2. Description of the Related Art Conventionally, when a hole matching a rectangular opening of a wiring box such as a switch, an outlet, an antenna terminal, etc., which is embedded behind a wall material is opened, the wall material is manually worked by using a hand saw. Since it has many holes in it, it is inefficient, and it takes a lot of time and effort when many holes need to be opened, such as in a house or a factory.
【０００３】そこで、動力を利用したものとして、特公
平６−９８６０７号公報に記載されているような孔明け
具が知られている。これは配線ボックスの開口縁に沿っ
て走行する無端状の走行帯（例えばチエーン）に刃物を
前方に突出させて設けてあり、この走行帯を走行させる
ことによって配線ボックスの開口と同形状の孔を明ける
ことができる。Therefore, as a device utilizing power, a punching tool as disclosed in Japanese Patent Publication No. 6-98607 is known. This is provided with a blade protruding forward in an endless traveling zone (eg, chain) that runs along the opening edge of the wiring box. By traveling in this traveling zone, a hole with the same shape as the opening of the wiring box is formed. You can open
【０００４】また、動力を利用した他の方法として、例
えば実開昭６２−７４４３０号公報（第５図）にはホル
ソーを使用して複数の円孔を部分的に重なり合うように
順次形成していき、配線ボックスの四角形状の開口に近
似した略四角形孔を明ける方法が知られている。これは
第１の円孔を明けた後にホルソーの位置をずらせて第１
の円孔と部分的に重なり合うようにして第２の円孔を明
けるものである。As another method using power, for example, in Japanese Utility Model Laid-Open No. 62-74430 (FIG. 5), a hole saw is used to form a plurality of circular holes sequentially so as to partially overlap each other. Then, there is known a method of forming a substantially rectangular hole that approximates the rectangular opening of the wiring box. This is because after the first circular hole is opened
The second circular hole is formed so as to partially overlap the circular hole.
【０００５】[0005]
【発明が解決しようとする課題】ところが、前記特公平
６−９８６０７号公報に記載されているような無端状の
走行帯を使用した孔明け具では、無端状の走行帯を配線
ボックスの開口縁に沿って走行させるために構造が複雑
で高価になり、また無端状の走行帯であるために、走行
帯は可撓性を必要とすることから刃先の走行軌跡が一定
でなくなり、そのため、孔明け効率が悪く、切り口も汚
く、切粉が多く出るという問題がある。However, in the hole punching tool using the endless running belt as described in Japanese Patent Publication No. 6-98607, the endless running belt is used as the opening edge of the wiring box. Since the structure is complicated and expensive to run along the edge, and the endless running band requires flexibility, the running track of the cutting edge is not constant, so the hole There is a problem that the dawn efficiency is low, the cut end is dirty, and a lot of chips are produced.
【０００６】一方、前記実開昭６２−７４４３０号公報
に記載されているようなホルソーを使用した孔明け工具
では、複数の円孔を１つずつ順に明けていくため、作業
能率が悪く、また各円孔が部分的に重なり合うようにす
る際の各円孔の間隔は作業者の熟練度に頼っているた
め、配線ボックスの開口形状から外れた孔が形成されて
しまうことがある。特に最初に明ける第１の円孔は正確
な位置に形成できるが、次の第２の円孔を明けるときに
第１の円孔に対して位置ずれが生じ易くなる。即ち、第
２の円孔を明ける時、ホルソーの円状の切刃は先に明け
られた第１の円孔に部分的に重なるようにして切削する
ことになり、切刃にかかる切削抵抗は第１の円孔に重な
る部分では零であり、壁材を切削する他の部分では大き
な切削抵抗がかかることになるため、このような切削抵
抗のアンバランスによって切刃は横方向の力を受け、第
２の円孔が所定の位置からずれて形成されてしまいやす
く、配線ボックスの開口形状から外れた孔が形成されて
しまうという問題がある。On the other hand, in the hole drilling tool using a hole saw as described in Japanese Utility Model Laid-Open No. 62-74430, a plurality of circular holes are drilled one by one, so that the working efficiency is poor and The interval between the circular holes when the circular holes partially overlap with each other depends on the skill level of the operator, and therefore holes that are out of the opening shape of the wiring box may be formed. In particular, the first circular hole to be opened first can be formed at an accurate position, but when the next second circular hole is to be formed, a positional deviation easily occurs with respect to the first circular hole. That is, when opening the second circular hole, the circular cutting edge of the hole saw is cut so as to partially overlap with the first circular hole that was previously opened, and the cutting resistance applied to the cutting edge is The cutting edge receives a lateral force due to the imbalance of the cutting resistance because the cutting force is zero in the part overlapping the first circular hole and the large cutting force is applied in the other part where the wall material is cut. However, there is a problem that the second circular hole is likely to be formed deviating from a predetermined position, and a hole deviating from the opening shape of the wiring box is formed.
【０００７】本発明は、上記従来の課題に鑑みてなされ
たもので、その目的とするところは、簡単な構造で、部
分的に重なり合う複数の円孔を正確な位置に、能率的に
且つ迅速に明けることができる回転切削工具を提供する
にある。The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to provide a plurality of partially overlapping circular holes at accurate positions efficiently and quickly with a simple structure. To provide a rotary cutting tool that can be opened to
【０００８】[0008]
【課題を解決するための手段】上記課題を解決するため
に、本発明は、回転軸心Ｍを中心とする円軌跡Ｎに沿っ
て切刃１１を回転させる複数の回転軸１０を備えた回転
機構部６を有し、各回転軸１０に取付けられた切刃１１
の円軌跡Ｎが部分的に重なり合うように各回転軸１０を
配置すると共に、各切刃１１が互いに干渉することがな
いように各切刃１１の回転位相をずらせて成ることに特
徴を有している。In order to solve the above-mentioned problems, the present invention provides a rotation provided with a plurality of rotating shafts 10 for rotating a cutting blade 11 along a circular locus N having a rotating shaft center M as a center. A cutting blade 11 having a mechanism portion 6 and attached to each rotary shaft 10.
The rotating shafts 10 are arranged so that the circular loci N of the cutting blades 11 partially overlap each other, and the rotational phases of the cutting blades 11 are shifted so that the cutting blades 11 do not interfere with each other. ing.
【０００９】また、各回転軸１０の回転を同期させるの
が好ましい。また、各回転軸１０を連結歯車２０を介し
て連結するのが好ましい。また、回転機構部６は単一の
主軸２を有し、各回転軸１０に設けた従動歯車２０ｂを
該単一の主軸２に設けた駆動歯車２０ａに夫々噛み合わ
せて成るのが好ましい。この場合、単一の主軸２を有す
る回転機構部６をグリップ９を有する本体ハウジング８
内に収容し、主軸２の後端部を本体ハウジング８の外部
に突出させて電動工具３の駆動源に装着して成るのが好
ましい。Further, it is preferable to synchronize the rotations of the respective rotary shafts 10. Further, it is preferable to connect the rotary shafts 10 via the connecting gears 20. Further, it is preferable that the rotary mechanism section 6 has a single main shaft 2 and that the driven gears 20b provided on the respective rotary shafts 10 are respectively meshed with the drive gears 20a provided on the single main shaft 2. In this case, the rotation mechanism portion 6 having the single main shaft 2 and the main body housing 8 having the grip 9 are provided.
It is preferable that the main shaft 2 is housed inside and the rear end portion of the main shaft 2 is projected to the outside of the main body housing 8 and mounted on the drive source of the electric power tool 3.
【００１０】また、回転機構部６を本体ハウジング８内
に収容すると共に、本体ハウジング８内に回転機構部６
の各回転軸１０と夫々個別に連結される複数の駆動源を
収容するのが好ましい。この場合、各回転軸１０を同期
歯車４０を介して互いに連結するのが好ましい。また、
本体ハウジング８内に回転機構部６を収容すると共に、
回転機構部６を本体ハウジング８に対して回転拘束され
且つ回転軸１０の軸方向Ｓに沿ってスライド自在に支持
するのが好ましい。この場合、回転機構部６と本体ハウ
ジング８との間に、回転機構部６を本体ハウジング８か
ら突出する方向にばね付勢する圧縮ばね１６を設けるの
が好ましい。Further, the rotation mechanism portion 6 is housed in the main body housing 8, and the rotation mechanism portion 6 is provided in the main body housing 8.
It is preferable to accommodate a plurality of drive sources that are individually connected to each of the rotating shafts 10 and 10. In this case, it is preferable that the rotary shafts 10 are connected to each other via the synchronous gear 40. Also,
While accommodating the rotation mechanism section 6 in the main body housing 8,
It is preferable that the rotation mechanism portion 6 is rotationally restrained with respect to the main body housing 8 and supported slidably along the axial direction S of the rotation shaft 10. In this case, it is preferable to provide a compression spring 16 between the rotation mechanism portion 6 and the main body housing 8 for biasing the rotation mechanism portion 6 in the direction of protruding from the main body housing 8.
【００１１】また、回転軸１０の先端に切刃１１の回転
中心となるセンタードリル１２を設け、該センタードリ
ル１２の先端を切刃１１の先端より前方に突出させるの
が好ましい。また、各回転軸１０を互いに逆方向に回転
させるのが好ましい。Further, it is preferable that a center drill 12 as the center of rotation of the cutting blade 11 is provided at the tip of the rotary shaft 10 and the tip of the center drill 12 is projected forward from the tip of the cutting blade 11. Further, it is preferable to rotate the rotary shafts 10 in opposite directions.
【００１２】[0012]
【作用】本発明によれば、両回転軸１０に取付けられた
切刃１１の円軌跡Ｎが部分的に重なり合うように両回転
軸１０を配置すると共に、各切刃１１が互いに干渉する
ことがないように各切刃１１の回転位相をずらせたこと
によって、部分的に重なり合う２個の円孔２７，２８を
同時形成でき、作業能率が良くなり、また回転軸１０の
配置間隔Ｄを決めるだけで各円孔２７，２８を正確な位
置に形成できるようになる。しかも、２個の円孔２７，
２８を同時形成することによって切刃１１にかかる切削
抵抗のバランスが良くなり、所定の位置から外れた孔が
形成されてしまう心配がなくなる。従って、作業に熟練
は要求されなくなると共に、部分的に重なり合う２つの
円孔２７，２８を壁材等の被切削材に能率的に、且つ迅
速に明けることができるものである。According to the present invention, both rotary shafts 10 are arranged so that the circular loci N of the cutting blades 11 attached to the rotary shafts 10 partially overlap each other, and the cutting blades 11 may interfere with each other. By shifting the rotational phase of each cutting edge 11 so as not to exist, two partially overlapping circular holes 27 and 28 can be formed at the same time, the work efficiency is improved, and only the arrangement interval D of the rotary shaft 10 is determined. Thus, the circular holes 27 and 28 can be formed at accurate positions. Moreover, the two circular holes 27,
By forming 28 at the same time, the balance of the cutting resistance applied to the cutting edge 11 is improved, and there is no fear that a hole deviated from a predetermined position will be formed. Therefore, the skill is not required for the work, and the two partially overlapping circular holes 27 and 28 can be efficiently and quickly formed in the material to be cut such as the wall material.
【００１３】[0013]
【実施例】以下、本発明の実施例を図面に基づいて説明
する。本実施例では、図２に示すように、回転切削工具
１の主軸２を電動ドリル、電動ドライバー等の電動工具
３のチャック４にて掴むことにより、回転切削工具１を
電動工具３に取付けて使用する場合を例示する。図２中
の５はトリガースイッチである。Embodiments of the present invention will be described below with reference to the drawings. In the present embodiment, as shown in FIG. 2, the rotary cutting tool 1 is attached to the power tool 3 by gripping the spindle 2 of the rotary cutting tool 1 with the chuck 4 of the power tool 3 such as an electric drill or an electric screwdriver. The case of using is illustrated. Reference numeral 5 in FIG. 2 is a trigger switch.
【００１４】回転切削工具１の回転機構部６は、図１に
示すように、機構部ケース７内に収容され、この機構部
ケース７は本体ハウジング８内に収容される。本体ハウ
ジング８は、手で掴み得る円筒形のグリップ９と、グリ
ップ９より大径で、回転機構部６の回転軸１０、切刃１
１、センタードリル１２等の外周を囲む直方体形のケー
ス１３とで構成される。As shown in FIG. 1, the rotary mechanism 6 of the rotary cutting tool 1 is housed in a mechanism case 7, and the mechanism case 7 is housed in a main body housing 8. The main body housing 8 has a cylindrical grip 9 that can be gripped by hand, a larger diameter than the grip 9, and a rotary shaft 10 and a cutting blade 1 of the rotary mechanism unit 6.
1, a rectangular parallelepiped case 13 that surrounds the outer periphery of the center drill 12 and the like.
【００１５】機構部ケース７は、本体ハウジング８のグ
リップ９内に収容される主軸ケース１４と、本体ハウジ
ング８のケース１３内に収容されるギヤケース１５とで
構成され、この機構部ケース７は本体ハウジング８に対
して回転拘束され且つ回転軸１０の軸方向Ｓに沿ってス
ライド自在に支持されている。機構部ケース７の主軸ケ
ース１４の外周側と本体ハウジング８のグリップ９の内
周側との間にはコイル状の圧縮ばね１６が介装されてお
り、圧縮ばね１６は機構部ケース７の主軸ケース１４の
後端より突出したばね受け１７ａと本体ハウジング８の
グリップ９の内面より突出したばね受け１７ｂとで支持
されており、この圧縮ばね１６のばね力によって機構部
ケース７は本体ハウジング８内で後退付勢されている。
さらに、機構部ケース７は圧縮ばね１６のばね力に抗し
て本体ハウジング８内を主軸２の延長方向（前進方向、
後退方向）にスライド可能とされ、切刃１１の切削深さ
に応じて本体ハウジング８のケース１３より回転機構部
６の切刃１１が突出できる構造となっている。The mechanism case 7 is composed of a spindle case 14 accommodated in the grip 9 of the main body housing 8 and a gear case 15 accommodated in the case 13 of the main body housing 8. The mechanism case 7 is a main body. It is rotationally restrained with respect to the housing 8 and supported slidably along the axial direction S of the rotary shaft 10. A coil-shaped compression spring 16 is interposed between the outer peripheral side of the main shaft case 14 of the mechanism case 7 and the inner peripheral side of the grip 9 of the main body housing 8. The compression spring 16 is the main shaft of the mechanism case 7. It is supported by a spring bearing 17a that projects from the rear end of the case 14 and a spring bearing 17b that projects from the inner surface of the grip 9 of the main body housing 8. The spring force of the compression spring 16 causes the mechanism case 7 to move inside the main body housing 8. Is being pushed backwards.
Further, the mechanism case 7 resists the spring force of the compression spring 16 and moves in the main body housing 8 in the extension direction (forward direction,
It is slidable in the backward direction) and has a structure in which the cutting blade 11 of the rotation mechanism portion 6 can protrude from the case 13 of the main body housing 8 according to the cutting depth of the cutting blade 11.
【００１６】機構部ケース７の主軸ケース１４内には単
一の主軸２が軸受１７を介して回転自在に支持されてお
り、この主軸２は主軸ケース１４の後面部からグリップ
９の後面部を貫通して外部に突出して、電動工具３の回
転駆動源に装着されるようになっている。機構部ケース
７のギヤケース１５内には、主軸２と同軸方向Ｓに延び
た複数本（本実施例では２本）の回転軸１０が軸受１８
を介して回転自在に支持されている。これら回転軸１０
は連結歯車２０を介して主軸２に連結される。本実施例
では、主軸２の先端に駆動歯車２０ａを固定し、両回転
軸１０に従動歯車２０ｂを夫々固定し、各従動歯車２０
ｂと主軸２の駆動歯車２０ａとを夫々噛み合わせること
により、両回転軸１０の回転が同期するようになってい
る。A single main shaft 2 is rotatably supported in a main shaft case 14 of the mechanism case 7 via a bearing 17, and the main shaft 2 extends from the rear surface part of the main shaft case 14 to the rear surface part of the grip 9. It penetrates and projects to the outside, and is attached to the rotary drive source of the electric tool 3. In the gear case 15 of the mechanism case 7, a plurality of (two in this embodiment) rotating shafts 10 extending in the coaxial direction S with the main shaft 2 are bearings 18.
It is rotatably supported via. These rotating shafts 10
Is connected to the main shaft 2 via a connecting gear 20. In this embodiment, the drive gear 20a is fixed to the tip of the main shaft 2, the driven gears 20b are fixed to the rotary shafts 10, and the driven gears 20 are fixed.
By meshing b with the drive gear 20a of the main shaft 2, the rotations of both rotary shafts 10 are synchronized.
【００１７】両回転軸１０の先端には、回転軸１０の径
方向Ｒに向けて突出するコ字状のアーム２１が夫々取付
けられている。アーム２１の両先端部には回転軸心Ｍよ
り所定距離をおいて位置する一対の切刃１１が回転軸１
０と同軸方向に突出しており、各切刃１１が回転軸１０
の回転軸心Ｍを中心とする円軌跡Ｎに沿って回転するよ
うになっている。ここで、各アーム２１の切刃１１の円
軌跡Ｎが部分的に重なり合うように両回転軸１０間の配
置間隔Ｄが設定されており、また、各アーム２１の切刃
１１の円軌跡Ｎが部分的に重なり合う場合に各切刃１１
が互いに干渉するのを防止する方法として、各切刃１１
の回転位相が９０°ずれるように各アーム２１の互いの
向きが設定されている。さらに、両回転軸１０の先端部
には切刃１１の回転中心となるセンタードリル１２が回
転軸１０と同軸上に位置するように装着し、且つ、各セ
ンタードリル１２の先端を切刃１１の先端より前方に突
出させてある。The U-shaped arms 21 projecting in the radial direction R of the rotary shaft 10 are attached to the tips of the rotary shafts 10, respectively. A pair of cutting blades 11 located at a predetermined distance from the rotation axis M is provided at both ends of the arm 21.
0 is projected in the same axis direction, and each cutting edge 11 has a rotary shaft 10
It is adapted to rotate along a circular locus N centered on the rotation axis M of the. Here, the arrangement interval D between the rotary shafts 10 is set so that the circular loci N of the cutting edges 11 of each arm 21 partially overlap each other, and the circular locus N of the cutting edges 11 of each arm 21 is Each cutting edge 11 when partially overlapping
As a method of preventing the cutting edges from interfering with each other,
The orientations of the arms 21 are set so that the rotation phases of the above are shifted by 90 °. Further, the center drills 12 that are the center of rotation of the cutting blades 11 are mounted on the tips of the rotary shafts 10 so as to be positioned coaxially with the rotation shafts 10, and the tips of each center drill 12 are attached to the cutting blades 11. It is projected forward from the tip.
【００１８】しかして、前記回転切削工具１は、主軸２
を電動ドリル、電動ドライバー等の電動工具３のチャッ
ク４にて掴むことにより、回転切削工具１を電動工具３
に取付けて使用できる。そして、電動工具３のモータに
て主軸２を回転駆動させると、主軸２の回転駆動力が連
結歯車２０（駆動歯車２０ａ，従動歯車２０ｂ）を介し
て２つの回転軸１０に同時に伝わり、両回転軸１０の先
端に取付けた一対のセンタードリル１２が回動すると共
に、９０°位相がずれた一対のアーム２１が各センター
ドリル１２の回りに回動する。そして、図３に示す背後
に配線ボックス２６が埋め込まれている壁材２５（被切
削材）にセンタードリル１２の先端を当接させると、セ
ンタードリル１２で壁材２５に中心孔が穿孔され、電動
工具３を押すことにより、ケース１３の開口縁が壁材２
５に当接し、電動工具３をさらに押すことにより、圧縮
ばね１６のばね力に抗して主軸２が前進移動し、各アー
ム２１が夫々前進して各切刃１１で図３に示すような部
分的に重なり合う２個の円孔２７，２８を穿孔できる。
このときケース１３にて粉塵が飛び散るのが防止され
る。Therefore, the rotary cutting tool 1 has the spindle 2
The rotary cutting tool 1 is held by the chuck 4 of the electric tool 3 such as an electric drill or an electric screwdriver.
Can be attached to and used. Then, when the main shaft 2 is rotationally driven by the motor of the electric tool 3, the rotational driving force of the main shaft 2 is simultaneously transmitted to the two rotary shafts 10 via the coupling gear 20 (driving gear 20a, driven gear 20b), and both rotations are performed. The pair of center drills 12 attached to the tip of the shaft 10 rotate, and the pair of arms 21 90 degrees out of phase rotate about each center drill 12. Then, when the tip of the center drill 12 is brought into contact with the wall material 25 (material to be cut) in which the wiring box 26 is embedded behind as shown in FIG. 3, a center hole is bored in the wall material 25 by the center drill 12, By pushing the power tool 3, the opening edge of the case 13 is changed to the wall material 2.
5, the main shaft 2 is moved forward against the spring force of the compression spring 16 by pushing the electric tool 3 further, each arm 21 is moved forward, and each cutting edge 11 is moved as shown in FIG. Two partially overlapping circular holes 27, 28 can be drilled.
At this time, dust is prevented from scattering in the case 13.
【００１９】ここで、両回転軸１０に取付けられた切刃
１１の円軌跡Ｎが部分的に重なり合うように両回転軸１
０を配置すると共に、各切刃１１が互いに干渉すること
がないように各切刃１１の回転位相を９０°ずらせたこ
とによって、従来のように複数の円孔を順次形成してい
く場合と異なり、部分的に重なり合う２個の円孔２７，
２８を同時形成でき、作業能率が良くなり、また回転軸
１０の配置間隔Ｄを決めるだけで各円孔２７，２８を正
確な位置に形成できるようになる。しかも、２個の円孔
２７，２８を同時形成することによって切刃１１にかか
る切削抵抗のバランスが良くなり、配線ボックス２６の
開口形状から外れた孔が形成されてしまう心配がなくな
る。Here, both rotary shafts 1 are so arranged that the circular loci N of the cutting edges 11 attached to both rotary shafts 10 partially overlap each other.
0 is arranged and the rotation phase of each cutting edge 11 is shifted by 90 ° so that each cutting edge 11 does not interfere with each other, thereby forming a plurality of circular holes sequentially as in the conventional case. Two circular holes 27, which are different and partially overlap,
28 can be formed at the same time, the working efficiency is improved, and the circular holes 27 and 28 can be formed at accurate positions only by determining the arrangement interval D of the rotary shaft 10. Moreover, by simultaneously forming the two circular holes 27 and 28, the balance of the cutting resistance applied to the cutting edge 11 is improved, and there is no fear of forming holes outside the opening shape of the wiring box 26.
【００２０】また、切刃１１よりも先にセンタードリル
１２の先端を壁材２５に当接させることにより、センタ
ードリル１２によって円孔２７，２８の中心が正確に得
られるので、切刃１１の位置ずれをなくして位置精度を
高めることができ、また切刃１１が壁材２５に当接した
時には回転する切刃１１による切削反力をセンタードリ
ル１２で受容できて、孔明け作業を楽に行なうことがで
きる。更に、本体ハウジング８のグリップ９を手で掴
み、主軸２を押して本体ハウジング８内に収容された機
構部ケース７を回転軸１０の軸方向Ｓに沿ってスライド
させることができるので、壁材２５の背後に埋め込まれ
ている配線ボックス２６に合わせて本体ハウジング８を
正確に位置合わせして、本体ハウジング８を壁材２５に
当てた状態から回転機構部６の切刃１１を前方にスライ
ドさせて円孔２７，２８を切り込んでいくことができる
ため、孔明けの位置精度が一層良くなる。しかも、圧縮
ばね１６によって機構部ケース７は後退付勢されている
ので、壁材２５に対する回転機構部６の位置合わせ、切
り込み作業が一層し易くなる。Further, by bringing the tip of the center drill 12 into contact with the wall material 25 prior to the cutting edge 11, the centers of the circular holes 27, 28 can be accurately obtained by the center drill 12, so that the cutting edge 11 The positional accuracy can be improved by eliminating the positional deviation, and when the cutting blade 11 abuts the wall material 25, the center drill 12 can receive the cutting reaction force of the rotating cutting blade 11, which facilitates the drilling work. be able to. Furthermore, since the grip 9 of the main body housing 8 is gripped by hand and the main shaft 2 is pushed, the mechanism case 7 housed in the main body housing 8 can be slid along the axial direction S of the rotary shaft 10, so that the wall member 25 Accurately position the main body housing 8 in accordance with the wiring box 26 embedded in the back of the housing, and slide the cutting blade 11 of the rotation mechanism portion 6 forward from the state where the main body housing 8 is in contact with the wall material 25. Since the circular holes 27 and 28 can be cut, the positional accuracy of the holes is further improved. Moreover, since the mechanism case 7 is biased backward by the compression spring 16, the work of aligning and cutting the rotary mechanism 6 with respect to the wall member 25 becomes easier.
【００２１】その結果、作業に熟練は要求されなくなる
と共に、配線ボックス２６の開口に合致する近似四角形
状の孔を壁材２５に能率的に、且つ迅速に明けることが
できるようになる。また、回転式の切刃１１を使用して
いるため、従来の無端状の走行帯等と比較して構造が簡
単で安価にできると共に、切刃１１の剛性が高くなるた
め信頼性が向上し、尚且つ、回転式の切刃１１であるが
故に走行軌跡が一定となり、孔明け効率が一層良くな
り、切り口も美麗となる。As a result, the skill is not required for the work, and an approximately square hole matching the opening of the wiring box 26 can be efficiently and quickly formed in the wall member 25. Further, since the rotary cutting blade 11 is used, the structure is simple and inexpensive compared to the conventional endless traveling belt, etc., and the rigidity of the cutting blade 11 is increased, so that the reliability is improved. Moreover, since the cutting blade 11 is a rotary type, the traveling locus is constant, the drilling efficiency is further improved, and the cut end is also beautiful.
【００２２】さらに、両回転軸１０には主軸２の駆動歯
車２０ａに噛み合う従動歯車２０ｂが設けられているの
で、両回転軸１０の回転を同期させることができ、各切
刃１１における切削抵抗のバランスが一層良好に保た
れ、そのうえ、連結歯車２０を介して両回転軸１０が互
いに逆方向に回転することにより、各切刃１１の回転方
向が互いに逆方向となり、従って、各切刃１１における
切削抵抗が相殺されて切削時の反力を小さくでき、孔明
け効率が向上し、より円滑な孔明け作業ができるもので
あり、また２つの回転軸１０を単一の主軸２を介して単
一の駆動源で駆動させることができるので、構造をより
簡単に安価にできるばかりか、回転切削工具１の主軸２
を本体ハウジング８から突出させて電動工具３の駆動源
に装着させることによって、ドリルドライバー等の汎用
の電動工具をそのまま利用できるという利点もある。Further, since the driven gears 20b that mesh with the drive gears 20a of the main shaft 2 are provided on both rotary shafts 10, the rotations of both rotary shafts 10 can be synchronized, and the cutting resistance of each cutting edge 11 can be improved. The balance is better maintained, and moreover, the rotating shafts 10 rotate in opposite directions via the connecting gear 20, so that the rotating directions of the respective cutting edges 11 are opposite to each other, and therefore, in the respective cutting edges 11. The cutting resistance is offset, the reaction force during cutting can be reduced, the drilling efficiency is improved, and smoother drilling work can be performed. Further, the two rotary shafts 10 are separated by a single main shaft 2. Since it can be driven by one drive source, not only the structure can be made simpler and less expensive, but also the spindle 2 of the rotary cutting tool 1 can be manufactured.
There is also an advantage that a general-purpose power tool such as a drill driver can be used as it is by projecting from the main body housing 8 and mounting it on the drive source of the power tool 3.
【００２３】前記実施例では、回転切削工具１の主軸２
を回転切削工具１とは別体の電動工具３に装着して使用
するようにしたが、本発明の他の実施例として、図４に
示すように、回転切削工具１の本体ハウジング８′内に
２つのモータ３１及び２つの減速機３２を収容し、両モ
ータ３１を減速機３２を介して２つの回転軸１０に夫々
個別に連結するものであってもよい。この実施例では、
前面が開口した有底筒形の本体ハウジング８′内に２つ
のモータ３１、２つの減速機３２及び機構部ケース７′
が夫々収容され、機構部ケース７′の外周側に筒状のケ
ース１３′が本体ハウジング８′に対して回転拘束され
た状態で、且つ軸方向Ｓに相対的にスライド可能であ
る。また、本体ハウジング８′の前端部のばね受け３３
とケース１３′のばね受け３４との間に圧縮ばね１６′
が介装されると共に、圧縮ばね１６′のばね力に抗して
ケース１３′内を本体ハウジング８′が前進方向にスラ
イド可能とされ、図１の実施例と同様、切刃１１の切削
深さに応じてケース１３′から切刃１１が突出できるよ
うになっている。さらに、両回転軸１０は同期歯車４０
を介して互いに連結され、２つの切刃１１が互いに干渉
することがないように同期歯車４０により回転数を同一
にしてある。ここで同期歯車４０により両回転軸１０が
連動することから、モータ３１及び減速機の数は１つで
あってもよい。尚、図４中の９′はグリップ、５′はト
リガースイッチである。他の構成は図１の実施例と同様
である。In the above embodiment, the spindle 2 of the rotary cutting tool 1
Was used by mounting it on a power tool 3 which is separate from the rotary cutting tool 1, but as another embodiment of the present invention, as shown in FIG. Alternatively, the two motors 31 and the two speed reducers 32 may be housed in each of the two motors 31 and the two motors 31 may be individually connected to the two rotary shafts 10 via the speed reducers 32. In this example,
Two motors 31, two speed reducers 32, and a mechanism case 7'in a bottomed cylindrical main body housing 8'having an open front surface.
Respectively, and a cylindrical case 13 'is slidable relative to the main body housing 8'on the outer peripheral side of the mechanism case 7'while being rotationally restrained with respect to the main body housing 8'. In addition, the spring bearing 33 at the front end of the main body housing 8 '
And the spring receiver 34 of the case 13 'between the compression spring 16'
And the main body housing 8'is slidable in the forward direction in the case 13 'against the spring force of the compression spring 16'. As in the embodiment of FIG. The cutting blade 11 can be protruded from the case 13 'accordingly. Further, both rotating shafts 10 are synchronized with the synchronous gear 40.
Are connected to each other via a synchronous gear 40 so that the two cutting edges 11 do not interfere with each other. Since both rotary shafts 10 are interlocked with each other by the synchronous gear 40, the number of motors 31 and speed reducers may be one. In FIG. 4, 9'is a grip and 5'is a trigger switch. Other configurations are similar to those of the embodiment shown in FIG.
【００２４】しかして、２つのモータ３１を回転駆動さ
せると、両モータ３１の回転駆動力は減速機３２を介し
て２つの回転軸１０に個別に伝わり、同期歯車４０によ
って両回転軸１０は同じ回転数で回転し、両回転軸１０
の先端に取付けた一対のセンタードリル１２が回動する
と同時に、９０°位相がずれた切刃１１が各センタード
リル１２の回りに回動して、図１の実施例と同様、部分
的に重なり合う２個の円孔２７，２８を同時形成するこ
とができ、作業能率が良くなるなどの作用効果が得ら
れ、さらに両回転軸１０を同期歯車４０を介して連結し
たことにより、両回転軸１０を夫々個別のモータ３１に
よって駆動する際に両回転軸１０を同期させることがで
きるため、孔明け作業をより円滑に行なえるようにな
る。また、同期歯車４０を介して両回転軸１０が互いに
逆方向に回転することにより、前記実施例と同様、各切
刃１１の回転方向が互いに逆方向となり、各切刃１１に
おける切削抵抗が相殺されて切削時の反力を小さくで
き、孔明け効率を向上させることができるものである。However, when the two motors 31 are rotationally driven, the rotational driving force of both motors 31 is individually transmitted to the two rotary shafts 10 via the speed reducer 32, and both rotary shafts 10 are the same by the synchronous gear 40. It rotates at the number of rotations, and both rotary shafts 10
At the same time that the pair of center drills 12 attached to the tips of the two rotate, the cutting blades 11 which are 90 ° out of phase rotate about the respective center drills 12 and partially overlap each other as in the embodiment of FIG. Since the two circular holes 27 and 28 can be formed simultaneously, the working efficiency is improved and the like, and the two rotating shafts 10 are connected through the synchronous gear 40, so that both rotating shafts 10 and 28 can be formed. Since both rotary shafts 10 can be synchronized when each is driven by the individual motor 31, the drilling work can be performed more smoothly. Further, as the rotary shafts 10 rotate in opposite directions via the synchronous gear 40, the rotation directions of the cutting blades 11 are opposite to each other, and the cutting resistance in each cutting blade 11 is offset, as in the above-described embodiment. As a result, the reaction force during cutting can be reduced and the drilling efficiency can be improved.
【００２５】なお、前記各実施例では、図５（ａ）に示
すように二つの円孔２７，２８を形成する場合を示した
が、回転軸１０及び切刃１１の数を増やすことによっ
て、例えば図５（ｂ）（ｃ）に示すように、三つの円孔
２７〜２９或いは４つ以上の円孔２７〜３０を同時形成
することができるものである。この場合においても、切
削抵抗を相殺するうえで各回転軸１０の回転方向を互い
に逆方向にするのが望ましい。In each of the above-described embodiments, the case where the two circular holes 27 and 28 are formed as shown in FIG. 5 (a) is shown. However, by increasing the numbers of the rotary shaft 10 and the cutting edge 11, For example, as shown in FIGS. 5B and 5C, three circular holes 27 to 29 or four or more circular holes 27 to 30 can be simultaneously formed. Even in this case, it is desirable that the rotation directions of the respective rotary shafts 10 are opposite to each other in order to cancel the cutting resistance.
【００２６】[0026]
【発明の効果】上述のように、請求項１の発明では、回
転軸心を中心とする円軌跡に沿って切刃を回転させる複
数の回転軸を備えた回転機構部を有し、各回転軸に取付
けられた切刃の円軌跡が部分的に重なり合うように各回
転軸を配置すると共に、各切刃が互いに干渉することが
ないように各切刃の回転位相をずらせて成るから、両回
転軸に取付けられた切刃の円軌跡が部分的に重なり合う
ように両回転軸を配置すると共に、各切刃が互いに干渉
することがないように各切刃の回転位相をずらせたこと
によって、従来のように複数の円孔を順次形成していく
場合と異なり、部分的に重なり合う２個の円孔を同時形
成でき、作業能率が良くなり、また回転軸の配置間隔を
決めるだけで各円孔を正確な位置に形成できるようにな
る。しかも、２個の円孔を同時形成することによって切
刃にかかる切削抵抗のバランスが良くなり、所定の位置
から外れた円孔が形成されてしまう心配がなくなる。そ
の結果、作業に熟練は要求されなくなると共に、部分的
に重なり合う複数の円孔を被切削材に能率的に、且つ迅
速に明けることができるようになる。更に、回転式の切
刃を使用しているため、従来の無端状の走行帯等と比較
して構造が簡単で安価にできると共に、切刃の剛性が高
くなるため信頼性が向上し、尚且つ、回転式の切刃であ
るが故に走行軌跡が一定となり、孔明け効率が一層良く
なり、切り口も美麗となるという効果を奏する。As described above, according to the first aspect of the present invention, the rotary mechanism portion having a plurality of rotary shafts for rotating the cutting blade along the circular locus centering on the rotary shaft center is provided, and each rotary shaft is rotated. The rotating shafts are arranged so that the circular loci of the cutting blades attached to the shaft partially overlap, and the rotation phases of the cutting blades are shifted so that they do not interfere with each other. By arranging both rotating shafts so that the circular loci of the cutting blades attached to the rotating shaft partially overlap, and by shifting the rotational phase of each cutting blade so that each cutting blade does not interfere with each other, Unlike the conventional method of forming multiple circular holes one by one, two overlapping circular holes can be formed at the same time, improving work efficiency. The holes can be formed at the correct positions. Moreover, by forming two circular holes at the same time, the balance of the cutting resistance applied to the cutting edge is improved, and there is no fear of forming circular holes deviating from a predetermined position. As a result, the skill is not required for the work, and a plurality of partially overlapping circular holes can be efficiently and quickly formed in the material to be cut. Further, since the rotary cutting blade is used, the structure is simple and inexpensive compared to the conventional endless running belt, etc., and the rigidity of the cutting blade is increased, so that the reliability is improved. Secondly, since it is a rotary type cutting blade, the traveling locus is constant, the drilling efficiency is further improved, and the cutting edge is beautiful.
【００２７】また請求項２の発明では、請求項１の各回
転軸の回転を同期させることにより、請求項１記載の効
果に加えて、各切刃における切削抵抗のバランスが保た
れて、円滑な孔明け作業ができる。また請求項３の発明
では、請求項１の各回転軸を連結歯車を介して連結した
から、請求項１記載の効果に加えて、複数の回転軸を単
一の駆動源で駆動できるため、構造をより簡単に安価に
できる。According to the invention of claim 2, by synchronizing the rotations of the rotary shafts of claim 1, in addition to the effect of claim 1, the cutting resistance in each cutting edge is kept in balance and smooth. You can perform various drilling work. Further, in the invention of claim 3, since the rotary shafts of claim 1 are connected through the connecting gears, in addition to the effect of claim 1, since a plurality of rotary shafts can be driven by a single drive source, The structure can be made simpler and cheaper.
【００２８】また請求項４の発明では、請求項１の回転
機構部は単一の主軸を有し、各回転軸に設けた従動歯車
を該単一の主軸に設けた駆動歯車に夫々噛み合わせて成
るから、請求項１記載の効果に加えて、複数の回転軸を
単一の駆動源で駆動できるため、構造をより簡単に安価
にできる。また請求項５の発明では、請求項４の単一の
主軸を有する回転機構部をグリップを有する本体ハウジ
ング内に収容し、主軸の後端部を本体ハウジングの外部
に突出させて電動工具の駆動源に装着して成るから、請
求項４記載の効果に加えて、回転切削工具と電動工具と
を組み合わせて使用することにより、ドリルドライバー
等の汎用の電動工具を利用でき、構造をより簡単に安価
にできる。Further, in the invention of claim 4, the rotating mechanism portion of claim 1 has a single main shaft, and driven gears provided on the respective rotary shafts are respectively meshed with drive gears provided on the single main shaft. Therefore, in addition to the effect of the first aspect, since a plurality of rotary shafts can be driven by a single drive source, the structure can be made simpler and cheaper. According to a fifth aspect of the present invention, the rotating mechanism having the single main shaft of the fourth aspect is housed in the main body housing having the grip, and the rear end of the main shaft is projected to the outside of the main body housing to drive the electric tool. Since it is mounted on the power source, in addition to the effect according to claim 4, by using the rotary cutting tool and the power tool in combination, a general-purpose power tool such as a drill driver can be used, and the structure is simplified. Can be cheap.
【００２９】また請求項６の発明では、請求項１の回転
機構部を本体ハウジング内に収容すると共に、本体ハウ
ジング内に回転機構部の各回転軸と夫々個別に連結され
る複数の駆動源を収容したから、請求項１記載の効果に
加えて、単一の駆動源を使用する以外に、複数の駆動源
を使用できるので、用途に応じて駆動源の数を選択で
き、汎用性が向上する。According to a sixth aspect of the present invention, the rotation mechanism portion of the first aspect is housed in the main body housing, and a plurality of drive sources individually connected to the respective rotation shafts of the rotation mechanism portion are provided in the main body housing. Since it is accommodated, in addition to the effect according to claim 1, since a plurality of drive sources can be used in addition to the use of a single drive source, the number of drive sources can be selected according to the application, and the versatility is improved. To do.
【００３０】また請求項７の発明では、請求項６の各回
転軸を同期歯車を介して互いに連結したから、請求項６
記載の効果に加えて、各回転軸を夫々個別の駆動源によ
って駆動する場合にも各回転軸を同期させることができ
るため、円滑な孔明け作業ができる。また請求項８の発
明では、請求項５の本体ハウジング内に回転機構部を収
容すると共に、回転機構部を本体ハウジングに対して回
転拘束され且つ回転軸の軸方向に沿ってスライド自在に
支持したから、請求項５記載の効果に加えて、例えば被
切削材の背後に埋め込まれている配線ボックスに回転切
削工具を正確に位置合わせして本体ハウジングを被切削
材に当てた状態から切刃を前方にスライドさせて円孔を
切り込んでいくことができるので、孔明けの位置精度が
良好となる。According to the invention of claim 7, the rotary shafts of claim 6 are connected to each other through a synchronous gear.
In addition to the effects described, even when the rotary shafts are driven by individual drive sources, the rotary shafts can be synchronized with each other, so that a smooth drilling operation can be performed. According to the invention of claim 8, the rotating mechanism is housed in the body housing of claim 5, and the rotating mechanism is supported by the body housing so as to be rotatable and slidable along the axial direction of the rotating shaft. Therefore, in addition to the effect according to claim 5, for example, the rotary cutting tool is accurately aligned with the wiring box embedded behind the material to be cut and the cutting blade is moved from the state where the main body housing is applied to the material to be cut. Since the circular hole can be cut by sliding it forward, the positional accuracy of the hole is improved.
【００３１】また請求項９の発明では、請求項８の回転
機構部と本体ハウジングとの間に、回転機構部を本体ハ
ウジングから突出する方向にばね付勢する圧縮ばねを設
けたから、請求項８記載の効果に加えて、圧縮ばねによ
って回転機構部が後退付勢されるため、被切削材に対す
る回転機構部の位置合わせ、切り込み作業が一層し易く
なる。Further, according to the invention of claim 9, a compression spring for urging the rotation mechanism portion in a direction projecting from the body housing is provided between the rotation mechanism portion of claim 8 and the body housing. In addition to the effects described above, since the rotation mechanism is biased backward by the compression spring, it becomes easier to position and rotate the rotation mechanism with respect to the material to be cut.
【００３２】また請求項１０の発明では、請求項１の回
転軸の先端に切刃の回転中心となるセンタードリルを設
け、該センタードリルの先端を切刃の先端より前方に突
出させたから、請求項１記載の効果に加えて、センター
ドリルによって円孔の中心が確実に得られるため、位置
ずれがなく、高い位置精度で円孔を穿孔でき、また回転
する切刃によって切削反力をセンタードリルで受容でき
て作業が一層楽に行なえる。According to the invention of claim 10, a center drill, which is the center of rotation of the cutting blade, is provided at the tip of the rotary shaft of claim 1, and the tip of the center drill is projected forward from the tip of the cutting blade. In addition to the effect described in item 1, since the center of the circular hole can be reliably obtained by the center drill, the circular hole can be drilled with high positional accuracy without positional deviation, and the cutting reaction force is generated by the rotating cutting blade. Can be accepted and work can be done more easily.
【００３３】また請求項１１の発明では、請求項１の各
回転軸を互いに逆方向に回転させるから、請求項１記載
の効果に加えて、各切刃における切削抵抗が相殺されて
切削時の反力を小さくでき、孔明け効率を更に向上させ
ることができる。Further, in the invention of claim 11, since the respective rotary shafts of claim 1 are rotated in mutually opposite directions, in addition to the effect of claim 1, the cutting resistance in each cutting edge is canceled out so that the cutting force during cutting is increased. The reaction force can be reduced and the drilling efficiency can be further improved.
【図１】（ａ）は本発明の一実施例を示す断面図、
（ｂ）は切刃の円軌跡を説明する平面図である。FIG. 1A is a sectional view showing an embodiment of the present invention,
(B) is a top view explaining the circular locus | trajectory of a cutting edge.
【図２】同上の回転切削工具の使用例を示す側面図であ
るFIG. 2 is a side view showing an example of use of the above rotary cutting tool.
【図３】同上の切刃により形成される部分的に重なり合
う円孔を示す斜視図である。FIG. 3 is a perspective view showing partially overlapping circular holes formed by the cutting edge of the same.
【図４】（ａ）は本発明の他の実施例を示す断面図、
（ｂ）は切刃の円軌跡を説明する平面図である。FIG. 4A is a sectional view showing another embodiment of the present invention,
(B) is a top view explaining the circular locus | trajectory of a cutting edge.
【図５】（ａ）（ｂ）（ｃ）は切刃の回転方向を説明す
る平面図である。5 (a), (b) and (c) are plan views illustrating the rotation direction of the cutting blade.
１ 回転切削工具 ２ 主軸 ３ 電動工具 ６ 回転機構部 ８ 本体ハウジング ９ グリップ １０ 回転軸 １１ 切刃 １２ センタードリル １６ 圧縮ばね ２０ 連結歯車 ２０ａ 駆動歯車 ２０ｂ 従動歯車 ４０ 同期歯車 Ｍ 回転軸心 Ｎ 円軌跡 Ｓ 軸方向 1 Rotary Cutting Tool 2 Spindle 3 Electric Tool 6 Rotation Mechanism Section 8 Body Housing 9 Grip 10 Rotating Axis 11 Cutting Edge 12 Center Drill 16 Compression Spring 20 Connecting Gear 20a Drive Gear 20b Driven Gear 40 Synchronous Gear M Rotating Axis N Circular Path S Axial direction
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成７年４月１０日[Submission date] April 10, 1995
【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】請求項９[Name of item to be corrected] Claim 9
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【手続補正２】[Procedure Amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１０[Correction target item name] 0010
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１０】また、回転機構部６を本体ハウジング８内
に収容すると共に、本体ハウジング８内に回転機構部６
の各回転軸１０と夫々個別に連結される複数の駆動源を
収容するのが好ましい。この場合、各回転軸１０を同期
歯車４０を介して互いに連結するのが好ましい。また、
本体ハウジング８内に回転機構部６を収容すると共に、
回転機構部６を本体ハウジング８に対して回転拘束され
且つ回転軸１０の軸方向Ｓに沿ってスライド自在に支持
するのが好ましい。この場合、回転機構部６と本体ハウ
ジング８との間に、回転機構部６を本体ハウジング８か
ら突出しない方向にばね付勢する圧縮ばね１６を設ける
のが好ましい。Further, the rotation mechanism portion 6 is housed in the main body housing 8, and the rotation mechanism portion 6 is provided in the main body housing 8.
It is preferable to accommodate a plurality of drive sources that are individually connected to each of the rotating shafts 10 and 10. In this case, it is preferable that the rotary shafts 10 are connected to each other via the synchronous gear 40. Also,
While accommodating the rotation mechanism section 6 in the main body housing 8,
It is preferable that the rotation mechanism portion 6 is rotationally restrained with respect to the main body housing 8 and supported slidably along the axial direction S of the rotation shaft 10. In this case, it is preferable to provide a compression spring 16 between the rotation mechanism portion 6 and the main body housing 8 so as to bias the rotation mechanism portion 6 in a direction not protruding from the main body housing 8.
【手続補正３】[Procedure 3]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１４[Correction target item name] 0014
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１４】回転切削工具１の回転機構部６は、図１に
示すように、機構部ケース７内に収容され、この機構部
ケース７は本体ハウジング８内に収容される。本体ハウ
ジング８は、手で掴み得る円筒形のグリップ９と、回転
機構部６の回転軸１０、切刃１１、センタードリル１２
等の外周を囲む直方体形のケース１３とで構成される。As shown in FIG. 1, the rotary mechanism 6 of the rotary cutting tool 1 is housed in a mechanism case 7, and the mechanism case 7 is housed in a main body housing 8. Body housing 8, a grip 9 of cylindrical can grasp by hand, rotating the rotary shaft 10 of the rolling mechanism 6, the cutting edge 11, the center drill 12
Etc. and a rectangular parallelepiped case 13 surrounding the outer circumference.
【手続補正４】[Procedure amendment 4]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１５[Name of item to be corrected] 0015
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１５】機構部ケース７は、本体ハウジング８のグ
リップ９内に収容される主軸ケース１４と、本体ハウジ
ング８のケース１３内に収容されるギヤケース１５とで
構成され、この機構部ケース７は本体ハウジング８に対
して回転拘束され且つ回転軸１０の軸方向Ｓに沿ってス
ライド自在に支持されている。機構部ケース７の主軸ケ
ース１４の外周側と本体ハウジング８のグリップ９の内
周側との間にはコイル状の圧縮ばね１６が介装されてお
り、圧縮ばね１６は機構部ケース７の主軸ケース１４の
後端より突出したばね受け１７ａと本体ハウジング８の
グリップ９の内面より突出したばね受け１７ｂとで支持
されており、この圧縮ばね１６のばね力によって機構部
ケース７は本体ハウジング８内で後退付勢されている。
つまり、本体ハウジング８から突出しない方向にばね付
勢されている。さらに、機構部ケース７は圧縮ばね１６
のばね力に抗して本体ハウジング８内を主軸２の延長方
向（前進方向、後退方向）にスライド可能とされ、切刃
１１の切削深さに応じて本体ハウジング８のケース１３
より回転機構部６の切刃１１が突出できる構造となって
いる。The mechanism case 7 is composed of a spindle case 14 accommodated in the grip 9 of the main body housing 8 and a gear case 15 accommodated in the case 13 of the main body housing 8. The mechanism case 7 is a main body. It is rotationally restrained with respect to the housing 8 and supported slidably along the axial direction S of the rotary shaft 10. A coil-shaped compression spring 16 is interposed between the outer peripheral side of the main shaft case 14 of the mechanism case 7 and the inner peripheral side of the grip 9 of the main body housing 8. The compression spring 16 is the main shaft of the mechanism case 7. It is supported by a spring bearing 17a that projects from the rear end of the case 14 and a spring bearing 17b that projects from the inner surface of the grip 9 of the main body housing 8. The spring force of the compression spring 16 causes the mechanism case 7 to move inside the main body housing 8. Is being pushed backwards.
That is, with the spring in the direction that does not protrude from the main body housing 8.
It is energized. Further, the mechanism case 7 has a compression spring 16
It is slidable in the main body housing 8 in the extension direction (forward direction, backward direction) of the main shaft 2 against the spring force of the main body housing 8, and the case 13 of the main body housing 8 is moved in accordance with the cutting depth of the cutting blade 11.
The structure is such that the cutting blade 11 of the rotation mechanism portion 6 can further project.
【手続補正５】[Procedure Amendment 5]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００３１[Correction target item name] 0031
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００３１】また請求項９の発明では、請求項８の回転
機構部と本体ハウジングとの間に、回転機構部を本体ハ
ウジングから突出しない方向にばね付勢する圧縮ばねを
設けたから、請求項８記載の効果に加えて、圧縮ばねに
よって回転機構部が後退付勢されるため、被切削材に対
する回転機構部の位置合わせ、切り込み作業が一層し易
くなる。Further, according to the invention of claim 9, a compression spring is provided between the rotating mechanism portion of claim 8 and the main body housing so as to bias the rotating mechanism portion in a direction not protruding from the main body housing. In addition to the effects described above, since the rotation mechanism is biased backward by the compression spring, it becomes easier to position and rotate the rotation mechanism with respect to the material to be cut.
Claims (11)
刃を回転させる複数の回転軸を備えた回転機構部を有
し、各回転軸に取付けられた切刃の円軌跡が部分的に重
なり合うように各回転軸を配置すると共に、各切刃が互
いに干渉することがないように各切刃の回転位相をずら
せて成ることを特徴とする回転切削工具。1. A rotary mechanism section having a plurality of rotating shafts for rotating a cutting blade along a circular locus centering on a rotating shaft center, wherein the circular locus of the cutting blade attached to each rotating shaft is a part. The rotary cutting tool is characterized in that the respective rotary shafts are arranged so as to overlap each other, and the rotational phases of the respective cutting blades are shifted so that the respective cutting blades do not interfere with each other.
とする請求項１記載の回転切削工具。2. The rotary cutting tool according to claim 1, wherein the rotations of the respective rotary shafts are synchronized.
とを特徴とする請求項１記載の回転切削工具。3. The rotary cutting tool according to claim 1, wherein the respective rotary shafts are connected via a connecting gear.
軸に設けた従動歯車を該単一の主軸に設けた駆動歯車に
夫々噛み合わせて成ることを特徴とする請求項１記載の
回転切削工具。4. The rotating mechanism portion has a single main shaft, and driven gears provided on the respective rotary shafts are meshed with drive gears provided on the single main shaft, respectively. The described rotary cutting tool.
プを有する本体ハウジング内に収容し、主軸の後端部を
本体ハウジングの外部に突出させて電動工具の駆動源に
装着して成ることを特徴とする請求項４記載の回転切削
工具。5. A rotating mechanism part having a single main shaft is housed in a main body housing having a grip, and a rear end part of the main shaft is projected to the outside of the main body housing and mounted on a drive source of an electric tool. The rotary cutting tool according to claim 4.
ると共に、本体ハウジング内に回転機構部の各回転軸と
夫々個別に連結される複数の駆動源を収容したことを特
徴とする請求項１記載の回転切削工具。6. The rotating mechanism part is housed in the main body housing, and a plurality of drive sources individually connected to the respective rotation shafts of the rotating mechanism part are housed in the main body housing. The described rotary cutting tool.
したことを特徴とする請求項６記載の回転切削工具。7. The rotary cutting tool according to claim 6, wherein the respective rotary shafts are connected to each other via a synchronous gear.
ると共に、回転機構部を本体ハウジングに対して回転拘
束され且つ回転軸の軸方向に沿ってスライド自在に支持
したことを特徴とする請求項５記載の回転切削工具。8. A rotating mechanism part is housed in the main body housing, and the rotating mechanism part is supported by the main body housing so as to be rotatable and slidable along the axial direction of the rotating shaft. The rotary cutting tool according to 5.
回転機構部を本体ハウジングから突出する方向にばね付
勢する圧縮ばねを設けたことを特徴とする請求項８記載
の回転切削工具。9. Between the rotation mechanism part and the main body housing,
9. The rotary cutting tool according to claim 8, further comprising a compression spring that biases the rotating mechanism in a direction projecting from the main body housing.
センタードリルを設け、該センタードリルの先端を切刃
の先端より前方に突出させたことを特徴とする請求項１
記載の回転切削工具。10. A center drill, which is a center of rotation of a cutting blade, is provided at a tip of a rotary shaft, and a tip of the center drill is projected forward from a tip of the cutting blade.
The described rotary cutting tool.
ことを特徴とする請求項１記載の回転切削工具。11. The rotary cutting tool according to claim 1, wherein the respective rotary shafts are rotated in mutually opposite directions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3511495A JPH08229715A (en) | 1995-02-23 | 1995-02-23 | Rotary cutting tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3511495A JPH08229715A (en) | 1995-02-23 | 1995-02-23 | Rotary cutting tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08229715A true JPH08229715A (en) | 1996-09-10 |
Family
ID=12432913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3511495A Pending JPH08229715A (en) | 1995-02-23 | 1995-02-23 | Rotary cutting tool |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08229715A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016104700A1 (en) * | 2014-12-26 | 2016-06-30 | 川崎重工業株式会社 | Machining method and system |
| CN106166621A (en) * | 2016-08-30 | 2016-11-30 | 重庆威诺克智能装备股份有限公司 | Processing automobile engine cylinder-body multi-cylinder Special-purpose machine tool for boring and processing method thereof |
| CN113305329A (en) * | 2021-06-21 | 2021-08-27 | 江苏威雅仕不锈钢制品有限公司 | Stainless steel flange drilling intelligent equipment capable of automatically recycling waste materials |
-
1995
- 1995-02-23 JP JP3511495A patent/JPH08229715A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016104700A1 (en) * | 2014-12-26 | 2016-06-30 | 川崎重工業株式会社 | Machining method and system |
| JPWO2016104700A1 (en) * | 2014-12-26 | 2017-10-12 | 川崎重工業株式会社 | Machining method and system |
| US10343288B2 (en) | 2014-12-26 | 2019-07-09 | Kawasaki Jukogyo Kabushiki Kaisha | Machining method and machining system |
| CN106166621A (en) * | 2016-08-30 | 2016-11-30 | 重庆威诺克智能装备股份有限公司 | Processing automobile engine cylinder-body multi-cylinder Special-purpose machine tool for boring and processing method thereof |
| CN113305329A (en) * | 2021-06-21 | 2021-08-27 | 江苏威雅仕不锈钢制品有限公司 | Stainless steel flange drilling intelligent equipment capable of automatically recycling waste materials |
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