JPH0911007A - Shank attachment structure of core drill - Google Patents
Shank attachment structure of core drillInfo
- Publication number
- JPH0911007A JPH0911007A JP13782395A JP13782395A JPH0911007A JP H0911007 A JPH0911007 A JP H0911007A JP 13782395 A JP13782395 A JP 13782395A JP 13782395 A JP13782395 A JP 13782395A JP H0911007 A JPH0911007 A JP H0911007A
- Authority
- JP
- Japan
- Prior art keywords
- shank
- insertion groove
- core drill
- locking
- tip
- 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.)
- Granted
Links
- 230000037431 insertion Effects 0.000 claims abstract description 97
- 238000003780 insertion Methods 0.000 claims abstract description 97
- 238000003825 pressing Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 10
- 238000005553 drilling Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Landscapes
- Gripping On Spindles (AREA)
- Drilling Tools (AREA)
Abstract
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【産業上の利用分野】本発明は、穿設作業に際し、コア
ドリルを、ドリル本体側に取着されたシャンクに保持す
るための取着構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an attachment structure for holding a core drill on a shank attached to the drill body side during a drilling operation.
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】円筒状
の穴を穿設する場合には、一般に、切削効率の良さから
コアドリルが多用されている。2. Description of the Related Art When drilling a cylindrical hole, a core drill is generally used because of its high cutting efficiency.
【０００３】上記コアドリルは、穿設すべき穴径に合わ
せて各種径のものが用意されている。The core drills are available in various diameters according to the diameter of the hole to be drilled.
【０００４】そして、穿設作業に際し、穿設しようとす
る穴径に合った径を有するコアドリルを選択し、ドリル
本体のシャンク側に取着して使用される。At the time of drilling work, a core drill having a diameter matching the diameter of the hole to be drilled is selected and attached to the shank side of the drill body for use.
【０００５】また、一連の穿設作業において、径の異な
る穴を連続して穿設しようとする場合には、その都度、
径の異なるコアドリルを選択してシャンクに取着し直す
必要がある。Further, in a series of drilling operations, when it is desired to continuously drill holes having different diameters,
It is necessary to select core drills with different diameters and reattach them to the shank.
【０００６】かかる場合に、全体の作業効率を考えた場
合には、上記コアドリルの交換が簡単に且つ短時間、つ
まり可及的にワンタッチでおこなえることが望ましい。In this case, considering the overall work efficiency, it is desirable that the core drill can be replaced easily and in a short time, that is, with one touch as much as possible.
【０００７】本発明は、上記現況に鑑みなされたもので
あって、シャンクへの脱着が簡単に且つ短時間でおこな
えるコアドリルのシャンク取着構造を提供することを目
的とする。The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a shank attachment structure of a core drill which can be easily attached to and detached from a shank in a short time.
【０００８】[0008]
【課題を解決するための手段】本願請求項１記載のコア
ドリルのシャンク取着構造は、上部にシャンク取着部を
有し下部に環状の刃部を有するコアドリルのシャンク取
着構造において、上記シャンク取着部に、シャンクへの
挿着方向に挿着溝を形成するとともに、その挿着溝の先
端方にシャンク側に形成された係止手段を係止する係止
部を設けたことを特徴とする。A shank attachment structure for a core drill according to a first aspect of the present invention is the shank attachment structure for a core drill having a shank attachment portion at an upper portion and an annular blade portion at a lower portion. The mounting portion has an insertion groove formed in the direction of insertion into the shank, and a locking portion for locking the locking means formed on the shank side is provided at the tip of the insertion groove. And
【０００９】また、請求項２記載のコアドリルのシャン
ク取着構造は、上部にシャンク取着部を有し下部に環状
の刃部を有するコアドリルのシャンク取着構造におい
て、上記シャンク取着部に、シャンクへの挿着方向に対
して回転方向前方に斜めに傾斜した挿着溝を形成すると
ともに、その挿着溝の先端方にシャンク側に形成された
係止手段を係止する係止部を設けたことを特徴とする。According to a second aspect of the present invention, there is provided a shank attachment structure for a core drill, wherein the shank attachment portion has an upper shank attachment portion and an annular blade portion at a lower portion. An insertion groove that is obliquely inclined forward with respect to the insertion direction to the shank is formed, and a locking portion that locks the locking means formed on the shank side is provided at the tip of the insertion groove. It is characterized by being provided.
【００１０】さらに、請求項３記載のコアドリルのシャ
ンク取着構造は、上部にシャンク取着部を有し下部に環
状の刃部を有するコアドリルのシャンク取着構造におい
て、上記シャンク取着部に、シャンクへの挿着方向に延
びる第１挿着溝とこの第１挿着溝の先端でそれに直交す
る方向に延びる第２挿着溝を形成するとともに、上記第
２挿着溝の先端方にシャンク側に形成された係止手段を
係止する係止部を設けたことを特徴とする。According to a third aspect of the present invention, there is provided a shank attachment structure for a core drill, wherein the shank attachment portion has an upper shank attachment portion and an annular blade portion at a lower portion. A first insertion groove extending in the insertion direction to the shank and a second insertion groove extending in a direction orthogonal to the first insertion groove at the tip of the first insertion groove are formed, and the shank is provided at the tip of the second insertion groove. It is characterized in that a locking portion for locking the locking means formed on the side is provided.
【００１１】また、請求項４記載のコアドリルのシャン
ク取着構造は、上部にシャンク取着部を有し下部に環状
の刃部を有するコアドリルのシャンク取着構造におい
て、上記シャンク取着部に、シャンクへの挿着方向に延
びる第１挿着溝とこの第１挿着溝の先端でそこから回転
方向前方に斜めに延びる第２挿着溝を形成するととも
に、上記第２挿着溝の先端方にシャンク側に形成された
係止手段を係止する係止部を設けたことを特徴とする。According to a fourth aspect of the present invention, there is provided a shank attaching structure for a core drill, wherein the shank attaching portion has an upper shank attaching portion and an annular blade portion at a lower portion. A first insertion groove extending in the insertion direction to the shank and a tip of the first insertion groove form a second insertion groove extending obliquely forward in the rotational direction from the first insertion groove, and the tip of the second insertion groove. It is characterized in that a locking portion for locking the locking means formed on the shank side is provided on one side.
【００１２】また、請求項５記載のコアドリルのシャン
ク取着構造は、上部にシャンク取着部を有し下部に環状
の刃部を有するコアドリルのシャンク取着構造におい
て、上記シャンク取着部に、シャンクへの挿着方向に延
びる第１挿着溝とこの第１挿着溝の先端でそこから直交
した回転方向に沿って無端状になった第２挿着溝を形成
するとともに、上記第２挿着溝の一部にシャンク側に形
成された係止手段を係止する係止部を設けたことを特徴
とする。According to a fifth aspect of the present invention, there is provided a shank attaching structure for a core drill, wherein the shank attaching portion has an upper shank attaching portion and a lower annular blade portion. A first insertion groove extending in the insertion direction to the shank and a second insertion groove which is endless along the rotation direction orthogonal to the first insertion groove are formed at the tip of the first insertion groove, and the second insertion groove is formed. It is characterized in that a locking portion for locking the locking means formed on the shank side is provided in a part of the insertion groove.
【００１３】また、請求項６記載のコアドリルのシャン
ク取着構造は、上記請求項１〜５までのいずれか１の項
に記載のコアドリルのシャンク取着構造において、上記
係止手段がボールであり、このボールが円筒状のシャン
ク内面に径方向に移動自在に設けられるとともに、この
ボールを内径側に押圧する弾性手段がシャンク側に配設
されている構成によって具現化できる。The core drill shank attachment structure according to a sixth aspect is the core drill shank attachment structure according to any one of the first to fifth aspects, wherein the locking means is a ball. The ball is provided on the inner surface of the cylindrical shank so as to be movable in the radial direction, and the elastic means for pressing the ball toward the inner diameter side is arranged on the shank side.
【００１４】[0014]
【作用】本願請求項１記載の発明にかかるコアドリルの
シャンク取着構造によれば、コアドリルをシャンクに取
着しようとする際には、シャンク側の係止手段とコアド
リルの挿着溝を位置的に合わせた状態で、該係止手段を
挿着溝の先端側に挿着してゆくと、該係止手段がコアド
リルの係止部に係止された状態となり、コアドリルをシ
ャンク側に取着することができる。According to the shank attachment structure of the core drill according to the first aspect of the present invention, when the core drill is attached to the shank, the locking means on the shank side and the insertion groove of the core drill are positioned. Aligning the locking means to the tip side of the insertion groove, the locking means is locked to the locking part of the core drill, and the core drill is attached to the shank side. can do.
【００１５】そして、この構成の場合には、コアドリル
のシャンク取着部に挿着方向の挿着溝を形成しその先端
方に係止部を形成するだけでよいため、簡単に取着構造
を構成することができる。In the case of this construction, since it is sufficient to form the insertion groove in the insertion direction in the shank attachment portion of the core drill and form the locking portion at the tip end thereof, the attachment structure can be easily formed. Can be configured.
【００１６】また、本願請求項２記載の発明にかかるコ
アドリルのシャンク取着構造によれば、上記請求項１記
載の発明と同様の作用の他に、以下のような作用を有す
る。According to the shank attachment structure of the core drill according to the second aspect of the present invention, in addition to the same action as the first aspect of the present invention, the following action is provided.
【００１７】つまり、回転トルクがドリル本体のシャン
ク側からコアドリルに伝達されると、シャンク側に対し
てコアドリルが締まり勝手に作用するため、コアドリル
の軸方向の力が作用してもコアドリルがシャンク側から
離脱することはない。That is, when the rotational torque is transmitted from the shank side of the drill body to the core drill, the core drill tightens against the shank side and acts on its own. Therefore, even if the axial force of the core drill acts, the core drill moves to the shank side. Never leave.
【００１８】また、本願請求項３記載の発明にかかるコ
アドリルのシャンク取着構造によれば、コアドリルをシ
ャンクに取着しようとする際には、シャンク側の係止手
段とコアドリルの第１挿着溝を位置的に合わせた状態
で、該係止手段を第１挿着溝の先端側に挿着してゆき、
次に該第１挿着溝に直交する第２挿着溝に沿って挿着、
つまりコアドリルをシャンクに対して回転させてゆく
と、該係止手段がコアドリルの係止部に係止された状態
となり、コアドリルをシャンク側に取着することができ
る。According to the shank attachment structure of the core drill according to the third aspect of the present invention, when the core drill is to be attached to the shank, the locking means on the shank side and the first insertion of the core drill are attached. With the grooves aligned, insert the locking means into the tip end side of the first insertion groove,
Next, it is inserted along the second insertion groove orthogonal to the first insertion groove,
That is, when the core drill is rotated with respect to the shank, the locking means is locked to the locking portion of the core drill, and the core drill can be attached to the shank side.
【００１９】そして、この構成の場合には、上記請求項
２記載の発明と同様に回転トルクがドリル本体のシャン
ク側からコアドリルに伝達されるとシャンク側に対して
コアドリルが締まり勝手に作用するとともに、さらに、
コアドリルは物理的にＬ字状に挿着操作することによっ
てシャンク側に取着されるため、大きな力でコアドリル
を軸方向に引っ張っても、シャンク側から離脱すること
はない。従って、シャンク側にコアドリルを離脱するた
めの解除部材（解除ノブ）が取着されている場合にも、
特に離脱させる方向に作用するバネが配設されていて
も、その解除部材を操作しても直ちにコアドリルが落下
あるいはバネ力によって飛び出すことが防止でき、この
ため、落下に起因してコアドリルの刃先を傷めることも
ない。Further, in the case of this construction, when the rotational torque is transmitted from the shank side of the drill body to the core drill as in the case of the second aspect of the invention, the core drill is tightened against the shank side and acts freely. ,further,
The core drill is attached to the shank side by physically inserting and operating it in an L-shape, so that even if the core drill is pulled in the axial direction with a large force, it does not separate from the shank side. Therefore, even when the release member (release knob) for removing the core drill is attached to the shank side,
In particular, even if a spring that acts in the direction of disengagement is provided, it is possible to prevent the core drill from immediately falling or popping out due to the spring force even if the release member is operated. It doesn't hurt.
【００２０】また、本願請求項４記載の発明にかかるコ
アドリルのシャンク取着構造によれば、上記請求項３記
載の発明と基本的に同様の作用が得られるとともに、第
２挿着溝の傾斜角度に比例した力でもって、シャンク側
に対してコアドリルを締まり勝手に作用するため、その
傾斜角度を調整することにより所望の力を得ることがで
き、従って、大きな回転トルクが作用する場合にも、コ
アドリル側に作用する回転トルクの大きさを調整するこ
とができる。そして、コアドリルに回転トルクが作用し
ている状態では、コアドリルに軸方向の力が作用しても
コアドリルがシャンク側から離脱することはない。According to the shank attachment structure of the core drill according to the invention of claim 4 of the present application, basically the same operation as that of the invention of claim 3 can be obtained, and the inclination of the second insertion groove is increased. With the force proportional to the angle, the core drill is tightened against the shank side and acts arbitrarily, so that the desired force can be obtained by adjusting the inclination angle, and thus even when a large rotational torque acts. It is possible to adjust the magnitude of the rotating torque that acts on the core drill side. Then, in the state where the rotating torque is applied to the core drill, the core drill does not come off from the shank side even if the axial force acts on the core drill.
【００２１】また、本願請求項５記載の発明にかかるコ
アドリルのシャンク取着構造によれば、上記請求項３記
載の発明と基本的に同様の作用が得られるとともに、第
２挿着溝が回転方向に無端状に形成されているため、加
工に際し旋盤等の工作機械を用いて簡単に且つ効率よく
形成することが可能となる。さらに、コアドリルをシャ
ンク側から離脱させる場合には、コアドリルをシャンク
に対して右回転あるいは左回転させても取り外すことが
できる。Further, according to the shank attachment structure of the core drill according to the invention of claim 5 of the present application, basically the same operation as that of the invention of claim 3 is obtained, and the second insertion groove rotates. Since it is formed endless in the direction, it becomes possible to easily and efficiently form it by using a machine tool such as a lathe during machining. Furthermore, when detaching the core drill from the shank side, it can be removed by rotating the core drill clockwise or counterclockwise with respect to the shank.
【００２２】[0022]
【実施例】以下、本願発明にかかる実施例を図面を参照
しながら具体的に説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments according to the present invention will be specifically described below with reference to the drawings.
【００２３】図１は本発明の一実施例にかかるコアドリ
ルのシャンク取着構造を示す図で、（ａ）はその（ｃ）
のＩ−Ｉ方向から見た図で中心線より略半分を断面した
図、（ｂ）は（ｃ）のII-II 方向から見た図、（ｃ）は
（ｂ）のIII-III 方向から見たシャンク取付部を示す図
である。FIG. 1 is a view showing a shank attachment structure of a core drill according to an embodiment of the present invention, in which (a) is (c) thereof.
(B) is a diagram viewed from the II-II direction of (c), and (c) is a diagram viewed from the II-II direction of (b). It is a figure which shows the shank attachment part seen.
【００２４】これらの図において、１はコアドリルで、
このコアドリル１の上部（図１（ａ），（ｂ）において
右部）には円筒状のシャンク（図示せず）の内側に取着
するためのシャンク取着部１Ａが形成され、下部（図１
（ａ），（ｂ）において左部）には穿設するための刃部
１Ｂが形成されている。また、５は刃体である超硬チッ
プ、６はチップ５前方に形成された切り屑排出溝であ
る。In these figures, 1 is a core drill,
A shank attachment portion 1A for attaching to an inner side of a cylindrical shank (not shown) is formed on an upper portion (right portion in FIGS. 1A and 1B) of the core drill 1, and a lower portion (see FIG. 1
A blade portion 1B for forming a hole is formed in the left portion in FIGS. Further, 5 is a cemented carbide tip which is a blade, and 6 is a chip discharge groove formed in front of the tip 5.
【００２５】そして、この実施例では、上記シャンク取
着部１Ａには、図１（ｃ）に図示する如く断面Ｕの字状
の挿着溝２が形成されている。そして、この挿着溝２
は、図１（ｂ）に図示するように、シャンクへの挿着方
向（図１（ｂ）の矢印Ｘ参照）に形成され、その先端方
（図１（ａ），（ｂ）において左方）には、部分球状穴
の一部を構成するような係止部（係止手段）３が形成さ
れている。In this embodiment, the shank attachment portion 1A is provided with an insertion groove 2 having a U-shaped cross section as shown in FIG. 1 (c). And this insertion groove 2
As shown in FIG. 1 (b), is formed in the direction of insertion into the shank (see arrow X in FIG. 1 (b)), and its tip side (left side in FIGS. 1 (a), (b)) 2) is formed with a locking portion (locking means) 3 that constitutes a part of the partial spherical hole.
【００２６】そして、この実施例では、上記挿着溝２
は、図１（ｃ）に図示するように、コアドリル１の外周
の三方、具体的には外周の１２０度間隔に設けられてい
る。In this embodiment, the insertion groove 2
As shown in FIG. 1 (c), are provided on three sides of the outer periphery of the core drill 1, specifically, at intervals of 120 degrees on the outer periphery.
【００２７】しかして、このように構成された本実施例
にかかるコアドリルのシャンク取着構造は、図示しない
円筒状のシャンク内に挿着する際には、上記挿着溝２が
シャンクの内周面に該シャンクの径方向に移動自在にバ
ネで押圧保持されているボールと位置的に合致させた状
態で、コアドリル１を図１（ｂ）において矢印Ｘ方向に
シャンクに対して挿着してゆくと、その際ボールはシャ
ンク内周面側にやや引っ込んだ状態で挿着溝２内を移動
し、該挿着溝２の先端方の係止部３に到達すると、図１
（ａ）の二点鎖線に図示するように、このボールＢがコ
アドリル１側（内径側）に突出して、その位置で保持さ
れる。なお、この状態において、ボールＢはシャンク側
（外径側）に後退しないような周知の係止・保持機構、
例えば、ガスあるいは水道等のワッタッチ式の接続部分
に採用されている係止・保持機構によって保持され、そ
して、コアドリルをシャンクから取り外す際には、解除
部材（ボールの後退を許容する部材）を操作することに
よって取り外しできるよう構成される。Thus, in the shank attachment structure of the core drill according to the present embodiment having the above-mentioned structure, when the core drill is inserted into the cylindrical shank (not shown), the insertion groove 2 is formed on the inner circumference of the shank. The core drill 1 is inserted into the shank in the direction of arrow X in FIG. 1 (b) in a state where the ball is held in position by a ball that is pressed and held by a spring so as to be movable in the radial direction of the shank. Then, at that time, the ball moves in the insertion groove 2 in a state of being slightly retracted to the inner peripheral surface side of the shank, and when it reaches the locking portion 3 at the distal end of the insertion groove 2,
As shown by the two-dot chain line in (a), this ball B projects toward the core drill 1 (inner diameter side) and is held at that position. In this state, a well-known locking / holding mechanism that prevents the ball B from retracting to the shank side (outer diameter side),
For example, it is held by a locking / holding mechanism that is adopted in a water-tight type connection part such as gas or water, and when removing the core drill from the shank, a release member (a member that allows the ball to retract) is operated. It is configured to be removable by doing.
【００２８】次に、図２に基づいて、本発明の他の実施
例について説明する。Next, another embodiment of the present invention will be described with reference to FIG.
【００２９】図２は本発明の他の実施例にかかるコアド
リルのシャンク取着構造を示す図で、（ａ）はその
（ｃ）のＩ−Ｉ方向から見た図で中心線より略半分を断
面した図、（ｂ）は（ｃ）のII-II 方向から見た図、
（ｃ）は（ｂ）のIII-III 方向から見たシャンク取付部
を示す図である。FIG. 2 is a view showing a shank attachment structure of a core drill according to another embodiment of the present invention. (A) is a view of the (c) seen from the direction I--I of FIG. A cross-sectional view, (b) is a view seen from the II-II direction of (c),
(C) is a figure which shows the shank attachment part seen from the III-III direction of (b).
【００３０】これらの図において、１はコアドリルで、
このコアドリル１の上部（図２（ａ），（ｂ）において
右部）には円筒状のシャンク（図示せず）の内側に取着
するためのシャンク取着部１Ａが形成され、下部（図２
（ａ），（ｂ）において左部）には穿設するための刃部
１Ｂが形成されている。また、５は刃体である超硬チッ
プ、６はチップ５前方に形成された切り屑排出溝であ
る。In these figures, 1 is a core drill,
A shank attachment portion 1A for attaching to an inner side of a cylindrical shank (not shown) is formed on an upper portion (right portion in FIGS. 2A and 2B) of the core drill 1, and a lower portion (FIG. Two
A blade portion 1B for forming a hole is formed in the left portion in FIGS. Further, 5 is a cemented carbide tip which is a blade, and 6 is a chip discharge groove formed in front of the tip 5.
【００３１】そして、この実施例では、上記シャンク取
着部１Ａには、図２（ｃ）に図示する如く断面Ｕの字状
の挿着溝２が形成されている。そして、この挿着溝２
は、図２（ｂ）に図示するように、シャンクへの挿着方
向（図２（ｂ）の矢印Ｘ参照）に形成される第１挿着溝
２Ａと、その先端で該第１挿着溝２Ａに直交する方向の
第２挿着溝２Ｂが形成され、該第２挿着溝２Ｂの先端方
（図２（ｂ）において上方）には、部分球状穴の一部を
構成するような係止部３が形成されている。この係止部
３は、図１に示す係止部３と基本的に同じ形状である。In this embodiment, the shank attachment portion 1A is provided with an insertion groove 2 having a U-shaped cross section as shown in FIG. 2 (c). And this insertion groove 2
As shown in FIG. 2 (b), is the first insertion groove 2A formed in the insertion direction to the shank (see arrow X in FIG. 2 (b)) and the first insertion groove 2A at its tip. A second insertion groove 2B is formed in a direction orthogonal to the groove 2A, and a part of the partial spherical hole is formed at the tip of the second insertion groove 2B (upper side in FIG. 2B). The locking portion 3 is formed. The locking portion 3 has basically the same shape as the locking portion 3 shown in FIG.
【００３２】そして、この実施例では、上記第１挿着溝
２Ａは、図２（ｃ）に図示するように、コアドリル１の
外周の三方、具体的には外周の１２０度間隔に設けら
れ、それぞれの第１挿着溝２Ａに連続して上記第２挿着
溝２Ｂが設けられている。In this embodiment, as shown in FIG. 2 (c), the first insertion grooves 2A are provided on three sides of the outer periphery of the core drill 1, specifically, at intervals of 120 degrees on the outer periphery, The second insertion groove 2B is provided continuously to each of the first insertion grooves 2A.
【００３３】しかして、このように構成された本実施例
にかかるコアドリルのシャンク取着構造は、図示しない
円筒状のシャンク内に挿着する際には、上記第１挿着溝
２Ａがシャンクの内周面に該シャンクの径方向に移動自
在にバネで押圧保持されているボールと位置的に合致さ
せた状態で、コアドリル１を図２（ｂ）において矢印Ｘ
方向にシャンクに対して挿着してゆくと、その際ボール
はシャンク内周面側にやや引っ込んだ状態で第１挿着溝
２Ａ内を移動し、該第１挿着溝２Ａの先端に達すると、
コアドリル１をシャンクに対して回転させることによっ
て、ボールを第２挿着溝２Ｂの先端方の係止部３に位置
させる。この係止部３で、図２（ａ）の二点鎖線に図示
するように、このボールＢがコアドリル１側（内径側）
に突出して、その位置で保持される。なお、この状態に
おいて、ボールＢは図１に示す実施例と同様に、シャン
ク側（外径側）に後退しないような周知の係止・保持機
構、例えば、ガスあるいは水道等のワッタッチ式の接続
部分に採用されている係止・保持機構によって保持さ
れ、そして、コアドリルをシャンクから取り外す際に
は、解除部材（ボールの後退を許容する部材）を操作す
ることによって取り外しできるよう構成してもよいし、
あるいは、この実施例の場合には、挿着溝２（第１挿着
溝２Ａ，第２挿着溝２Ｂ）がＬ字状に形成されているの
で、上述のような周知の係止・保持機構を備えなくとも
よい。但し、この場合には、ドリルの穿設に際しての回
転方向が図２においてＲ方向になるよう挿着溝２を形成
する必要がある。そして、このように挿着溝２を形成す
ると、コアドリル１は物理的にＬ字状に挿着操作するこ
とによってシャンク側に取着されるため、大きな力でコ
アドリル１を軸方向（図２（ｂ）の矢印Ｘ方向と逆の方
向）に引っ張っても、シャンク側から離脱することはな
い。従って、シャンク側にコアドリルを離脱するための
係止・保持機構が取着されている場合にも、その係止・
保持機構の解除部材（解除ノブ）を操作しても直ちにコ
アドリルが落下することが防止でき、このため、落下に
起因してコアドリルの刃先を傷めることもない。Thus, in the shank attachment structure of the core drill according to the present embodiment having the above-mentioned structure, when the shank attachment structure is inserted into the cylindrical shank (not shown), the first insertion groove 2A is formed in the shank. 2 (b), the core drill 1 is moved in the radial direction of the shank so as to be movable in the radial direction of the shank and aligned with the ball.
When the ball is inserted into the shank in the direction, the ball moves in the first insertion groove 2A while being slightly retracted toward the shank inner peripheral surface, and reaches the tip of the first insertion groove 2A. Then,
By rotating the core drill 1 with respect to the shank, the ball is positioned at the locking portion 3 at the tip of the second insertion groove 2B. At this locking portion 3, as shown by the chain double-dashed line in FIG. 2A, this ball B is located on the core drill 1 side (inner diameter side).
Projected into and held in that position. In this state, as in the embodiment shown in FIG. 1, the ball B is a well-known locking / holding mechanism that does not retract to the shank side (outer diameter side), for example, a water-tight connection of gas or water. The core drill is held by a locking / holding mechanism employed in the part, and when the core drill is removed from the shank, it may be removed by operating a release member (a member that allows the ball to retract). Then
Alternatively, in the case of this embodiment, since the insertion groove 2 (first insertion groove 2A, second insertion groove 2B) is formed in an L shape, the well-known locking / holding as described above is performed. The mechanism does not have to be provided. However, in this case, it is necessary to form the insertion groove 2 so that the rotation direction at the time of drilling the drill is the R direction in FIG. When the insertion groove 2 is formed in this manner, the core drill 1 is physically attached to the shank side by performing an insertion operation in an L shape, so that the core drill 1 is axially moved with a large force (see FIG. Even if it is pulled in the direction opposite to the arrow X direction of b)), it does not come off from the shank side. Therefore, even if a locking / holding mechanism for removing the core drill is attached to the shank side,
Even if the release member (release knob) of the holding mechanism is operated, it is possible to prevent the core drill from immediately falling, and therefore, the cutting edge of the core drill is not damaged due to the fall.
【００３４】ところで、図１に示す実施例に代えて、図
３に図示するように、挿着溝２を、シャンクへの挿着方
向（図３（ｂ）の矢印Ｘ参照）に対して、回転方向（図
３の（ｂ）の矢印Ｒ参照）前方に斜めに傾斜するように
構成してもよく、かかる構成の場合には、図１に示す実
施例の奏する作用の他に、図３（ｂ）の矢印Ｒ方向の回
転トルクが、図示しないドリル本体のシャンク側からコ
アドリル１に伝達されると、シャンク側に対してコアド
リル１が締まり勝手に働き、このため、コアドリルに軸
方向の力（図３（ｂ）の矢印Ｘと反対の方向の力）が作
用してもコアドリル１がシャンク側から離脱することは
ない。By the way, instead of the embodiment shown in FIG. 1, as shown in FIG. 3, the insertion groove 2 is formed in the direction of insertion into the shank (see arrow X in FIG. 3B). It may be configured to incline forward in the direction of rotation (see arrow R in FIG. 3B). In such a configuration, in addition to the effect of the embodiment shown in FIG. When the rotational torque in the direction of arrow R in (b) is transmitted to the core drill 1 from the shank side of the drill body (not shown), the core drill 1 is tightened against the shank side, and the axial force acts on the core drill. The core drill 1 does not separate from the shank side even if (force in the direction opposite to the arrow X in FIG. 3B) acts.
【００３５】さらに、別の実施例として、図２に図示す
る実施例に代えて、図４に図示するように、第１挿着溝
２Ａをシャンクへの挿着方向（図４（ｂ）の矢印Ｘ参
照）に形成し、第２挿着溝２Ｂを回転方向（図４の
（ｂ）の矢印Ｒ参照）前方に斜めに傾斜するように構成
してもよく、かかる構成の場合には、図２に示す実施例
の奏する作用と基本的に同様の作用の他に、上記傾斜角
度を適宜設定することにより、第２挿着溝２Ｂの傾斜角
度に比例した力が、シャンク側に対してコアドリルが締
まり勝手になるよう働くため、その傾斜角度を調整する
ことにより所望の力を得ることができる。そして、コア
ドリル１が回転している状態では、コアドリル１がシャ
ンク側から離脱することはない。Further, as another embodiment, instead of the embodiment shown in FIG. 2, as shown in FIG. 4, the first insertion groove 2A is inserted into the shank in the insertion direction (see FIG. 4 (b)). (See arrow X), and the second insertion groove 2B may be configured to incline forward in the rotation direction (see arrow R in FIG. 4B). In the case of such a configuration, In addition to the operation basically similar to the operation of the embodiment shown in FIG. 2, by appropriately setting the inclination angle, a force proportional to the inclination angle of the second insertion groove 2B is applied to the shank side. Since the core drill works so as to be self-tight, a desired force can be obtained by adjusting the inclination angle. Then, when the core drill 1 is rotating, the core drill 1 does not separate from the shank side.
【００３６】さらに、別の実施例として、図２あるいは
図４に図示する実施例に代えて、図５に図示するよう
に、第１挿着溝２Ａをシャンクへの挿着方向（図５
（ｂ）の矢印Ｘ参照）に形成し、第２挿着溝２Ｂを上記
第１挿着溝２Ａに直交する回転方向（図５の（ｂ）の矢
印Ｒ参照）に沿って無端状になるよう構成し、且つ係止
部３をこの第２挿着溝２Ｂの一部の一箇所あるいは複数
箇所に形成してもよく、かかる構成の場合には、図２あ
るいは図４に示す実施例の奏する作用と基本的に同様の
作用の他に、上記第２挿着溝２Ｂが回転方向（図５の
（ｂ）の矢印Ｒ参照）に沿って無端状になっているた
め、旋盤等の工作機械を使用して簡単に且つ効率良く製
作することが可能となる。また、コアドリルをシャンク
側から離脱させる場合には、コアドリルをシャンクに対
して右回転あるいは左回転させても取り外すことができ
る。Further, as another embodiment, instead of the embodiment shown in FIG. 2 or FIG. 4, as shown in FIG. 5, the first insertion groove 2A is inserted in the shank direction (FIG. 5).
(See arrow X in FIG. 5B), and the second insertion groove 2B becomes endless along the rotation direction (see arrow R in FIG. 5B) orthogonal to the first insertion groove 2A. Alternatively, the locking portion 3 may be formed at one location or a plurality of locations of a part of the second insertion groove 2B. In the case of such a configuration, the locking portion 3 of the embodiment shown in FIG. In addition to the operation basically similar to the operation to be performed, since the second insertion groove 2B is endless along the rotation direction (see the arrow R in FIG. 5B), the work of a lathe or the like is performed. It becomes possible to easily and efficiently manufacture using a machine. When the core drill is detached from the shank side, the core drill can be removed by rotating the core drill clockwise or counterclockwise with respect to the shank.
【００３７】[0037]
【発明の効果】しかして、本願発明にかかるコアドリル
のシャンク取付構造によれば、コアドリルをシャンク側
に簡単に且つ短時間、つまりワンタッチで取着すること
ができる。According to the core drill shank mounting structure according to the present invention, the core drill can be easily and quickly attached to the shank side, that is, with one touch.
【００３８】そして、コアドリルのシャンク取付部に単
純な挿着溝とその先端方に係止部を設けるだけでよいた
め、構造が比較的簡単であることから、安価に実施する
ことができる。Since the shank mounting portion of the core drill only needs to be provided with a simple insertion groove and a locking portion at the tip end thereof, the structure is relatively simple, so that the core drill can be implemented at low cost.
【図１】 本発明の一実施例にかかるコアドリルのシャ
ンク取着構造を示す図で、（ａ）はその（ｃ）のＩ−Ｉ
方向から見た図で中心線より略半分を断面した図、
（ｂ）は（ｃ）のII-II 方向から見た図、（ｃ）は
（ｂ）のIII-III 方向から見たシャンク取付部を示す図
である。FIG. 1 is a view showing a shank attachment structure of a core drill according to one embodiment of the present invention, wherein (a) is the II of (c).
A diagram showing a cross section of substantially half from the center line in a diagram viewed from the direction,
(B) is a diagram viewed from the II-II direction of (c), and (c) is a diagram illustrating the shank mounting portion viewed from the III-III direction of (b).
【図２】 本発明の他の実施例にかかるコアドリルのシ
ャンク取着構造を示す図で、（ａ）はその（ｃ）のＩ−
Ｉ方向から見た図で中心線より略半分を断面した図、
（ｂ）は（ｃ）のII-II 方向から見た図、（ｃ）は
（ｂ）のIII-III 方向から見たシャンク取付部を示す図
である。FIG. 2 is a view showing a shank attachment structure of a core drill according to another embodiment of the present invention, in which (a) is I-of (c) thereof.
A view in which a half of the center line is cut in the view seen from the I direction,
(B) is a diagram viewed from the II-II direction of (c), and (c) is a diagram illustrating the shank mounting portion viewed from the III-III direction of (b).
【図３】 本発明の他の実施例にかかるコアドリルのシ
ャンク取着構造を示す図で、（ａ）はその（ｃ）のＩ−
Ｉ方向から見た図で中心線で断面した縦断面図、（ｂ）
は（ｃ）のII-II 方向から見た図、（ｃ）は（ｂ）のII
I-III 方向から見たシャンク取付部を示す図である。FIG. 3 is a diagram showing a shank attachment structure of a core drill according to another embodiment of the present invention, in which (a) is I- of (c) thereof.
A vertical cross-sectional view taken along the center line in the view seen from the I direction, (b)
Is a view from the II-II direction of (c), (c) is the II of (b)
It is a figure which shows the shank attachment part seen from the I-III direction.
【図４】 本発明の他の実施例にかかるコアドリルのシ
ャンク取着構造を示す図で、（ａ）はその（ｃ）のＩ−
Ｉ方向から見た図で中心線で断面した縦断面図、（ｂ）
は（ｃ）のII-II 方向から見た図、（ｃ）は（ｂ）のII
I-III 方向から見たシャンク取付部を示す図である。FIG. 4 is a view showing a shank attachment structure of a core drill according to another embodiment of the present invention, in which (a) is I- of (c) thereof.
A vertical cross-sectional view taken along the center line in the view seen from the I direction, (b)
Is a view from the II-II direction of (c), (c) is the II of (b)
It is a figure which shows the shank attachment part seen from the I-III direction.
【図５】 本発明の他の実施例にかかるコアドリルのシ
ャンク取着構造を示す図で、（ａ）はその（ｃ）のＩ−
Ｉ方向から見た図で中心線より略半分を断面した縦断面
図、（ｂ）は（ｃ）のII-II 方向から見た図、（ｃ）は
（ｂ）のIII-III 方向から見たシャンク取付部を示す図
である。FIG. 5 is a diagram showing a shank attachment structure of a core drill according to another embodiment of the present invention, in which (a) is I- of (c) thereof.
A vertical cross-sectional view taken from the direction I, which is approximately half the center line, (b) is a view from the direction II-II of (c), and (c) is a view from the direction III-III of (b). It is a figure which shows the shank attachment part.
１…コアドリル １Ａ…シャンク取着部 １Ｂ…刃部 ２…挿着溝 ３…係止部 Ｂ…係止手段 DESCRIPTION OF SYMBOLS 1 ... Core drill 1A ... Shank attachment part 1B ... Blade part 2 ... Insertion groove 3 ... Locking part B ... Locking means
Claims (6)
の刃部を有するコアドリルのシャンク取着構造におい
て、 上記シャンク取着部に、シャンクへの挿着方向に挿着溝
を形成するとともに、その挿着溝の先端方にシャンク側
に形成された係止手段を係止する係止部を設けたことを
特徴とするコアドリルのシャンク取付構造。1. A shank attachment structure for a core drill having a shank attachment portion on an upper portion and an annular blade portion on a lower portion, wherein an insertion groove is formed in the shank attachment portion in a direction of insertion into a shank. At the same time, a shank mounting structure for a core drill, characterized in that a locking portion for locking a locking means formed on the shank side is provided at the tip of the insertion groove.
の刃部を有するコアドリルのシャンク取着構造におい
て、 上記シャンク取着部に、シャンクへの挿着方向に対して
回転方向前方に斜めに傾斜した挿着溝を形成するととも
に、その挿着溝の先端方にシャンク側に形成された係止
手段を係止する係止部を設けたことを特徴とするコアド
リルのシャンク取付構造。2. A shank attachment structure for a core drill having a shank attachment portion at an upper portion and an annular blade portion at a lower portion, wherein the shank attachment portion is forward in a rotational direction with respect to an insertion direction to the shank. A shank mounting structure for a core drill, characterized in that an insertion groove that is obliquely inclined is formed, and a locking portion that locks locking means formed on the shank side is provided at the tip of the insertion groove.
の刃部を有するコアドリルのシャンク取着構造におい
て、 上記シャンク取着部に、シャンクへの挿着方向に延びる
第１挿着溝とこの第１挿着溝の先端でそれに直交する方
向に延びる第２挿着溝を形成するとともに、上記第２挿
着溝の先端方にシャンク側に形成された係止手段を係止
する係止部を設けたことを特徴とするコアドリルのシャ
ンク取付構造。3. A shank attachment structure for a core drill having a shank attachment portion at an upper portion and an annular blade portion at a lower portion, wherein the shank attachment portion has a first insertion groove extending in an insertion direction to the shank. And a member for forming a second insertion groove extending in a direction orthogonal to the first insertion groove at the tip thereof and for locking the locking means formed on the shank side at the tip of the second insertion groove. Shank mounting structure for core drills that features a stop.
の刃部を有するコアドリルのシャンク取着構造におい
て、 上記シャンク取着部に、シャンクへの挿着方向に延びる
第１挿着溝とこの第１挿着溝の先端でそこから回転方向
前方に斜めに延びる第２挿着溝を形成するとともに、上
記第２挿着溝の先端方にシャンク側に形成された係止手
段を係止する係止部を設けたことを特徴とするコアドリ
ルのシャンク取付構造。4. A shank attachment structure for a core drill having a shank attachment portion at an upper portion and an annular blade portion at a lower portion, wherein the shank attachment portion has a first insertion groove extending in an attachment direction to the shank. And a second insertion groove extending obliquely forward from the first insertion groove in the rotational direction at the tip of the first insertion groove, and engaging means formed on the shank side at the tip of the second insertion groove. A shank mounting structure for core drills, which is equipped with a locking part to stop.
の刃部を有するコアドリルのシャンク取着構造におい
て、 上記シャンク取着部に、シャンクへの挿着方向に延びる
第１挿着溝とこの第１挿着溝の先端でそこから直交した
回転方向に沿って無端状になった第２挿着溝を形成する
とともに、上記第２挿着溝の一部にシャンク側に形成さ
れた係止手段を係止する係止部を設けたことを特徴とす
るコアドリルのシャンク取付構造。5. A shank attaching structure for a core drill having a shank attaching portion on an upper portion and an annular blade portion on a lower portion, wherein the shank attaching portion has a first inserting groove extending in an inserting direction to the shank. And an endless second insertion groove is formed at the tip of the first insertion groove along the direction of rotation orthogonal thereto, and a part of the second insertion groove is formed on the shank side. A shank mounting structure for a core drill, characterized in that a locking portion for locking the locking means is provided.
ルが円筒状のシャンク内面に径方向に移動自在に設けら
れるとともに、このボールを内径側に押圧する弾性手段
がシャンク側に配設されていることを特徴とする請求項
１〜５までのいずれか１の項に記載のコアドリルのシャ
ンク取付構造。6. The locking means is a ball, the ball is provided on the inner surface of a cylindrical shank so as to be movable in the radial direction, and the elastic means for pressing the ball toward the inner diameter side is provided on the shank side. The core drill shank mounting structure according to any one of claims 1 to 5, wherein:
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7137823A JP2756237B2 (en) | 1995-04-28 | 1995-06-05 | Core drill shank attachment structure |
| TW84106233A TW264413B (en) | 1995-06-05 | 1995-06-17 | Installation structure for handle of core drill |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10510295 | 1995-04-28 | ||
| JP7-105102 | 1995-04-28 | ||
| JP7137823A JP2756237B2 (en) | 1995-04-28 | 1995-06-05 | Core drill shank attachment structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0911007A true JPH0911007A (en) | 1997-01-14 |
| JP2756237B2 JP2756237B2 (en) | 1998-05-25 |
Family
ID=26445451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7137823A Expired - Fee Related JP2756237B2 (en) | 1995-04-28 | 1995-06-05 | Core drill shank attachment structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2756237B2 (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002064297A1 (en) * | 2001-01-03 | 2002-08-22 | Alfred Raith Gmbh | Drilling tool |
| JP2006150508A (en) * | 2004-11-30 | 2006-06-15 | Osg Corp | Cutting tool |
| JP2006150509A (en) * | 2004-11-30 | 2006-06-15 | Osg Corp | Cutting tool |
| WO2009054868A1 (en) * | 2007-10-25 | 2009-04-30 | Hougen Manufacturing, Inc. | Cutter for engagement with an arbor |
| JP2009533234A (en) * | 2006-04-10 | 2009-09-17 | フランツ・ハイマー・マシーネンバウ・カーゲー | Means for preventing a tool from escaping from a tool holder having a fixture for holding the tool |
| WO2010110735A1 (en) * | 2009-03-27 | 2010-09-30 | Seco Tools Ab | Cutting tip comprising a grooved shank, and cutting tool comprising such a cutting tip |
| US7896589B2 (en) | 2007-10-25 | 2011-03-01 | Hougen Manufacturing, Inc. | Cutter for engagement with an arbor |
| EP2537611A4 (en) * | 2010-02-15 | 2014-07-09 | Miyanaga Kk | Rotation tool installation and removal device and said rotation tool |
| JP2015003426A (en) * | 2013-06-20 | 2015-01-08 | 株式会社アレン | Core drill |
| US9943912B2 (en) | 2011-12-27 | 2018-04-17 | Franz Haimer Maschinenbau Kg | Tool holder and method for producing a tool receiving portion for such a tool holder |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50305U (en) * | 1973-04-27 | 1975-01-06 | ||
| JPH06315806A (en) * | 1993-04-30 | 1994-11-15 | Daishowa Seiki Co Ltd | Holder device |
| JPH079226A (en) * | 1993-06-30 | 1995-01-13 | Nitto Kohki Co Ltd | Annular cutter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH031659Y2 (en) | 1985-01-25 | 1991-01-18 |
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- 1995-06-05 JP JP7137823A patent/JP2756237B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50305U (en) * | 1973-04-27 | 1975-01-06 | ||
| JPH06315806A (en) * | 1993-04-30 | 1994-11-15 | Daishowa Seiki Co Ltd | Holder device |
| JPH079226A (en) * | 1993-06-30 | 1995-01-13 | Nitto Kohki Co Ltd | Annular cutter |
Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002064297A1 (en) * | 2001-01-03 | 2002-08-22 | Alfred Raith Gmbh | Drilling tool |
| JP2006150508A (en) * | 2004-11-30 | 2006-06-15 | Osg Corp | Cutting tool |
| JP2006150509A (en) * | 2004-11-30 | 2006-06-15 | Osg Corp | Cutting tool |
| EP2343144A1 (en) | 2006-04-10 | 2011-07-13 | Franz Haimer Maschinenbau KG | Means for preventing tools from being pulled out from tool holders with a tool holding fixture |
| JP2009533234A (en) * | 2006-04-10 | 2009-09-17 | フランツ・ハイマー・マシーネンバウ・カーゲー | Means for preventing a tool from escaping from a tool holder having a fixture for holding the tool |
| EP3427874B1 (en) * | 2006-04-10 | 2025-02-19 | Franz Haimer Maschinenbau KG | System consisting of a tool holder and a tool with a pull-out guard |
| US10933473B2 (en) | 2006-04-10 | 2021-03-02 | Franz Haimer Maschinenbau Kg | Means for preventing tools from being pulled out from tool holders with a tool holding fixture |
| EP3300822A2 (en) | 2006-04-10 | 2018-04-04 | Franz Haimer Maschinenbau KG | Means for preventing tools from being pulled out from tool holders with a tool holding fixture |
| US10898959B2 (en) | 2006-04-10 | 2021-01-26 | Franz Haimer Maschinenbau Kg | Means for preventing tools from being pulled out from tool holders with a tool holding fixture |
| JP2013010179A (en) * | 2006-04-10 | 2013-01-17 | Franz Haimer Maschinenbau Kg | Means for preventing tool from pulling out from tool holder having tool holding fixture |
| DE102006062973C5 (en) * | 2006-04-10 | 2020-03-05 | Franz Haimer Maschinenbau Kg | System of tool holder with a cylindrical tool holder in the form of a collet chuck and tool |
| EP2343144B1 (en) | 2006-04-10 | 2019-01-09 | Franz Haimer Maschinenbau KG | Means for preventing tools from being pulled out from tool holders with a tool holding fixture |
| JP2018079562A (en) * | 2006-04-10 | 2018-05-24 | フランツ・ハイマー・マシーネンバウ・カーゲー | Means for preventing a tool from escaping from a tool holder having a fixture for holding the tool |
| CN105057722A (en) * | 2006-04-10 | 2015-11-18 | 弗朗茨海默尔机械制造两合公司 | Means for preventing tools from being pulled out from tool holders with a tool holding fixture |
| JP2016005865A (en) * | 2006-04-10 | 2016-01-14 | フランツ・ハイマー・マシーネンバウ・カーゲー | Means for preventing tool from pulling out from tool holder having tool holding fixture |
| US11192194B2 (en) | 2007-04-05 | 2021-12-07 | Franz Haimer Maschinenbau Kg | Tool holder |
| US7896590B2 (en) | 2007-10-25 | 2011-03-01 | Hougen Manufacturing, Inc. | Cutter for engagement with an arbor |
| US7896589B2 (en) | 2007-10-25 | 2011-03-01 | Hougen Manufacturing, Inc. | Cutter for engagement with an arbor |
| WO2009054868A1 (en) * | 2007-10-25 | 2009-04-30 | Hougen Manufacturing, Inc. | Cutter for engagement with an arbor |
| EP2411175A4 (en) * | 2009-03-27 | 2013-06-19 | Seco Tools Ab | Cutting tip comprising a grooved shank, and cutting tool comprising such a cutting tip |
| CN102365146A (en) * | 2009-03-27 | 2012-02-29 | 山高刀具公司 | Cutting tip comprising a grooved shank, and cutting tool comprising such a cutting tip |
| WO2010110735A1 (en) * | 2009-03-27 | 2010-09-30 | Seco Tools Ab | Cutting tip comprising a grooved shank, and cutting tool comprising such a cutting tip |
| EP2537611A4 (en) * | 2010-02-15 | 2014-07-09 | Miyanaga Kk | Rotation tool installation and removal device and said rotation tool |
| US9943912B2 (en) | 2011-12-27 | 2018-04-17 | Franz Haimer Maschinenbau Kg | Tool holder and method for producing a tool receiving portion for such a tool holder |
| US10967437B2 (en) | 2011-12-27 | 2021-04-06 | Franz Haimer Maschinenbau Kg | Tool holder and clamping system |
| JP2015003426A (en) * | 2013-06-20 | 2015-01-08 | 株式会社アレン | Core drill |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2756237B2 (en) | 1998-05-25 |
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