JP2756237B2 - Core drill shank attachment structure - Google Patents
Core drill shank attachment structureInfo
- Publication number
- JP2756237B2 JP2756237B2 JP7137823A JP13782395A JP2756237B2 JP 2756237 B2 JP2756237 B2 JP 2756237B2 JP 7137823 A JP7137823 A JP 7137823A JP 13782395 A JP13782395 A JP 13782395A JP 2756237 B2 JP2756237 B2 JP 2756237B2
- Authority
- JP
- Japan
- Prior art keywords
- shank
- core drill
- insertion groove
- locking
- ball
- 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.)
- Expired - Fee Related
Links
Landscapes
- Gripping On Spindles (AREA)
- Drilling Tools (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】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
The present invention relates to an attachment structure for holding a core drill on a shank attached to a drill body.
【０００２】[0002]
【従来の技術】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。
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。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。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。2. Description of the Related Art When a cylindrical hole is formed, a core drill is generally used in many cases because of its high cutting efficiency.
The core drill has various diameters according to the hole diameter to be drilled. At the time of drilling, a core drill having a diameter corresponding to the hole diameter to be drilled is selected and attached to the shank side of the drill body for use. Further, in a series of drilling operations, when drilling holes having different diameters continuously, it is necessary to select a core drill having a different diameter and attach it to the shank each time.
【０００３】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 such a case, in consideration of 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.
【０００４】[0004]
【発明が解決しようとする課題】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。SUMMARY OF THE INVENTION The present invention has been made in consideration of the above situation, and has as its object to provide a core drill shank mounting structure that can be easily attached to and detached from a shank in a short time. .
【０００５】[0005]
【課題を解決するための手段】請求項１に記載のコアド
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 first aspect of the present invention, there is provided a core drill shank mounting structure, wherein the core drill has a shank mounting portion at an upper portion and an annular blade portion at a lower portion. A first insertion groove extending in the direction of insertion into the shank and a second insertion groove which is endless at a tip end of the first insertion groove and extends in a rotational direction orthogonal to the first insertion groove at the attachment portion. In addition, a locking portion for locking the locking means formed on the shank side is provided in a part of the second insertion groove.
【０００６】こ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容易に取着するこ
とができる。According to this shank mounting structure, when the core drill is to be mounted on the shank, the engaging means on the shank side and the first insertion groove of the core drill are aligned with each other. The stop means is inserted into the front end side of the first insertion groove, and then inserted along the second insertion groove orthogonal to the first insertion groove, that is, the core drill is rotated with respect to the shank. Then, the locking means is locked in the locking portion of the core drill, and the core drill can be easily attached to the shank side.
【０００７】また、取着後、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, even if the core drill is pulled in the axial direction by a large force after the attachment, the core drill does not come off from the shank side. Therefore, even when a release member (release knob) for releasing the core drill is attached to the shank side, even if a spring that acts particularly in the release direction is provided, the release member is operated by operating the release member. Also, the core drill can be prevented immediately from falling or jumping out due to spring force.
There is no damage to the cutting edge of the core drill due to falling.
【０００８】さらに、このシャンク取着構造によれば、
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。しかも、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。Furthermore, according to this shank attachment structure,
Since the second insertion groove is formed endlessly in the rotation direction,
In processing, it can be formed easily and efficiently using a machine tool such as a lathe. Moreover, 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.
【０００９】また、請求項２に記載のコアドリルのシャ
ンク取着構造は、上記請求項１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。According to a second aspect of the present invention, in the core drill shank mounting structure, the locking means is a ball, and the ball is a cylindrical shank. This can be embodied by a configuration in which the inner surface is provided movably in the radial direction and elastic means for pressing the ball toward the inner diameter side are provided on the shank side.
【００１０】[0010]
【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.
【００１１】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, and FIG.
(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.
【００１２】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はチップ超硬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 mounting portion 1A for mounting inside 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 (FIG. 1A). 1
In (a) and (b), a blade portion 1B for drilling is formed. Reference numeral 5 denotes a carbide tip as a blade, and reference numeral 6 denotes a chip discharge groove formed in front of the tip carbide 5.
【００１３】取着部１Ａには、シャンクへの挿着方向
（図１（ｂ）の矢印Ｘ参照）に、コアドリル１の外周の
三方、具体的には外周の１２０度間隔に第１挿着溝２Ａ
が形成されている。この第１挿着溝２Ａの先端には、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第２挿着溝２Ｂが形
成されている。そして、この第２挿着溝２Ｂ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。係止部３は一箇所のみ形成されてもよ
く、複数箇所形成されてもよい。The first portion is attached to the attachment portion 1A at three directions on the outer periphery of the core drill 1, specifically, at intervals of 120 degrees around the outer periphery in the direction of insertion into the shank (see arrow X in FIG. 1B). Groove 2A
Are formed. At the end of the first insertion groove 2A, a second insertion groove 2B is formed so as to be endless along a rotation direction (see an arrow R in FIG. 5B) orthogonal to the first insertion groove 2A. Is formed. A locking portion (locking means) 3 which forms a part of the partial spherical hole is formed in the second insertion groove 2B. The locking portion 3 may be formed at only one place, or may be formed at a plurality of places.
【００１４】しかして、このように構成されたコアドリ
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に設けられた係止部３に位置させる。この係
止部３で、このボールがコアドリル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容易に取り外しできるよ
う構成される。In the core drill shank mounting structure thus configured, when the core drill is inserted into a cylindrical shank (not shown), the first insertion groove 2A is formed on the inner peripheral surface of the shank. When the core drill 1 is inserted into the shank in a direction indicated by an arrow X in FIG. 1B in a state where the core drill 1 is aligned with a ball pressed and held by a spring so as to be movable in the radial direction of the shank, At that time, the ball moves inside the first insertion groove 2A while being slightly retracted toward the inner peripheral surface of the shank,
When the ball reaches the tip of the first insertion groove 2A, the ball is rotated by rotating the core drill 1 with respect to the shank.
It is located at the locking portion 3 provided in the insertion groove 2B. The locking portion 3 projects the ball toward the core drill 1 (inner diameter side) and is held at that position. In this state, in this state, a well-known locking / holding mechanism for preventing the ball from retreating toward the shank side (outer diameter side), for example, a locking / holding mechanism employed in a gas- or water-based connection part of a touch-sensitive type. When the core drill is removed from the shank, the core drill can be easily removed by operating a release member (a member that allows the ball to retreat).
【００１５】このシャンク取着構造では、係止部３が水
平方向に伸びる第２挿着溝２Ｂに設けられているため、
大きな力でコアドリル１を軸方向（図１（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。In this shank attachment structure, since the locking portion 3 is provided in the second insertion groove 2B extending in the horizontal direction,
The core drill 1 is axially moved with a large force (arrow X in FIG. 1B).
Pulling in the opposite direction) will not separate from the shank side. Therefore, even if the locking / holding mechanism for detaching the core drill is attached to the shank side, the core drill immediately drops even if the release member (release knob) of the locking / holding mechanism is operated. Therefore, the cutting edge of the core drill is not damaged due to the fall.
【００１６】しかも、第２挿着溝２Ｂが回転方向（図１
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。Moreover, the second insertion groove 2B is rotated in the rotational direction (FIG. 1).
(See the arrow R in FIG. 2B), so that it is possible to easily and efficiently manufacture using a machine tool such as a lathe. 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.
【００１７】[0017]
【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。そして、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。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. And because the structure is relatively simple,
It 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).
１…コアドリル １Ａ…シャンク取着部 １Ｂ…刃部 ２Ａ…第１挿着溝 ２Ｂ…第２挿着溝 ３…係止部 DESCRIPTION OF SYMBOLS 1 ... Core drill 1A ... Shank attachment part 1B ... Blade part 2A ... 1st insertion groove 2B ... 2nd insertion groove 3 ... Locking part
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) B23B 31/113 B23B 31/107 B23B 51/04 B25B 15/00 B25G 3/16 F16B 7/14 F16B 7/20──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 6 , DB name) B23B 31/113 B23B 31/107 B23B 51/04 B25B 15/00 B25G 3/16 F16B 7/14 F16B 7 / 20
Claims (2)
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。1. A shank mounting structure for a core drill having a shank mounting portion at an upper portion and an annular blade portion at a lower portion, wherein the first mounting groove extends in the shank mounting direction in the shank mounting portion. And a second insertion groove which is endless at a tip end of the first insertion groove along a rotation direction orthogonal to the first insertion groove, and is formed on a shank side in a part of the second insertion groove. A shank mounting structure for a core drill, wherein 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に記載のコアドリルのシャンク取付構造。2. 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. Claims characterized in that
2. The shank mounting structure of the core drill according to 1 .
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 JPH0911007A (en) | 1997-01-14 |
| JP2756237B2 true 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) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10100024A1 (en) * | 2001-01-03 | 2002-07-11 | Alfred Raith Gmbh | Quick change machine tool drill head has stub with flats and recesses to receive detent ball in machine tool spindle |
| JP2006150509A (en) * | 2004-11-30 | 2006-06-15 | Osg Corp | Cutting tool |
| JP2006150508A (en) * | 2004-11-30 | 2006-06-15 | Osg Corp | Cutting tool |
| DE102006028408A1 (en) * | 2006-04-10 | 2007-10-31 | Franz Haimer Maschinenbau Kg | Tool holder has tool holding fixture, preferably chuck, where shank of a tool particularly rotary tool, is accommodated in tool holding fixture |
| DE202011109498U1 (en) | 2011-12-27 | 2012-02-13 | Franz Haimer Maschinenbau Kg | Tool holder and clamping system with such a 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 |
| SE533660C2 (en) * | 2009-03-27 | 2010-11-23 | Seco Tools Ab | Cutting tip comprising a grooved shank and cutting tool including such cutting tip |
| JPWO2011099100A1 (en) * | 2010-02-15 | 2013-06-13 | 株式会社ミヤナガ | Rotating tool attaching / detaching device and rotating tool |
| JP2015003426A (en) * | 2013-06-20 | 2015-01-08 | 株式会社アレン | Core drill |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH031659Y2 (en) | 1985-01-25 | 1991-01-18 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50305U (en) * | 1973-04-27 | 1975-01-06 | ||
| JP3423028B2 (en) * | 1993-04-30 | 2003-07-07 | 大昭和精機株式会社 | Holder device |
| JP2558054B2 (en) * | 1993-06-30 | 1996-11-27 | 日東工器株式会社 | Annular cutter |
-
1995
- 1995-06-05 JP JP7137823A patent/JP2756237B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH031659Y2 (en) | 1985-01-25 | 1991-01-18 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0911007A (en) | 1997-01-14 |
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