JPH0475806A - Chuck for tool - Google Patents

Chuck for tool

Info

Publication number
JPH0475806A
JPH0475806A JP18508090A JP18508090A JPH0475806A JP H0475806 A JPH0475806 A JP H0475806A JP 18508090 A JP18508090 A JP 18508090A JP 18508090 A JP18508090 A JP 18508090A JP H0475806 A JPH0475806 A JP H0475806A
Authority
JP
Japan
Prior art keywords
sleeve
main shaft
collet
tool
unclamp
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
Application number
JP18508090A
Other languages
Japanese (ja)
Other versions
JP2831814B2 (en
Inventor
Toru Yagami
八上 徹
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DMG Mori Co Ltd
Kuroda Precision Industries Ltd
Original Assignee
Mori Seiki Co Ltd
Kuroda Precision Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mori Seiki Co Ltd, Kuroda Precision Industries Ltd filed Critical Mori Seiki Co Ltd
Priority to JP18508090A priority Critical patent/JP2831814B2/en
Publication of JPH0475806A publication Critical patent/JPH0475806A/en
Application granted granted Critical
Publication of JP2831814B2 publication Critical patent/JP2831814B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE:To eliminate a drive source by a method wherein when a main spindle is moved backward, an unclamping pin is brought into contact with an outer cylinder and pressed in the sleeve side, a sleeve is pressed against the force of a spring member, and a collet is unclamped. CONSTITUTION:An initially coned disc spring 10 is located between a flange part 7 of a sleeve 6 and a front cover 8, and the sleeve 6 is energized backward in a manner to clamp a collet 3 through the spring pressure thereof. When a tool T is unclamped for exchange, a main spindle 1 is moved to a rearmost end position and a rear end part 14 of an unclamp pin 11 is forced into contact with the end surface of an outer cylinder 15, and the unclamp pin 11 forcibly compresses the initially coned disc spring 10 to move forward the sleeve 6. Through movement of the sleeve 6, the collet 3 is released to unclamp the tool T. However, unclamping operation is practicable even when the main spindle 1 is rotated and therefore, the tool T can be exchanged during rotation of the main spindle 1.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は工作機械の主軸、特に中空軸からなり、軸方向
に移動可能なタイル主軸に設ける工具用チャックに関す
る。
DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a tool chuck provided on a main spindle of a machine tool, particularly on a tile main spindle that is made of a hollow shaft and is movable in the axial direction.

従来の技術 従来の工具チャックでは、工具のクランプ・アンクラン
プを自動化する場合、油圧、空圧などの駆動源が必要で
あった。しかも、主軸の回転中にクランプ・アンクラン
プすることができなかった。
BACKGROUND OF THE INVENTION Conventional tool chucks require a hydraulic, pneumatic, or other driving source when automating the clamping and unclamping of tools. Furthermore, it was not possible to clamp/unclamp the main shaft while it was rotating.

特に、主軸が中空軸からなり、軸方向に移動可能なタイ
ル主軸の場合には、自動クランプ機構自体が困難で、は
とんど手締め方式であった。
In particular, in the case of a tile main shaft whose main shaft is a hollow shaft and is movable in the axial direction, the automatic clamping mechanism itself is difficult, and most of the time, a hand-tightening method is used.

発明が解決しλ、うとする課題 本発明は上記事情に鑑みてなされたもので、タイル主軸
に簡単に装着でき、し、かも自動クランプ・アンクラン
プに特別の駆動源を必要とぜず、また、主軸の回転中に
もクランプ・アンクランプが可能である工具用チャック
を提供することを目的としている。
Problems to be Solved by the Invention The present invention has been made in view of the above circumstances, and it can be easily attached to the tile main shaft, and does not require a special drive source for automatic clamping and unclamping. The object of the present invention is to provide a tool chuck that can be clamped and unclamped even while the main shaft is rotating.

課題を解決するための手段 上記目的を達成するために、本発明が採用1.た技術的
手段は、中空軸からなり、軸方向に移動可能な主軸に設
けられる工具用チャックであって、前記主軸の前端開口
部に嵌@されたコlノットを有するチャック本体と、前
記コ1ノットに軸方向摺動自在に被嵌されたテーバ付き
スリーブと、前記スリーブに被嵌され、前記チャック本
体に固定された前カバーと、前記スリーブと前記前カバ
ーとの間に介装され、前記コレットをクランプするよう
に前記スリーブ庖付勢するばね部材と、前記チャック本
体の外周部に前記主軸と平行に貫通して配設され、内端
部が前記スリーブに当接すると共に、外端部が前記チャ
ック本体より後方に突出している複数のアンクランプピ
ンと、前記主軸に被嵌された外筒とを備え、前記主軸が
後退1〜たとき、前記アンクランプピンが前記外筒に当
接17て前記スリーブ側に押し込まれ、前記ばね部材に
抗して前記スリーブを押動させ、前記コレットをアンク
ランプするようになっている。
Means for Solving the Problems In order to achieve the above objects, the present invention adopts 1. The technical means described above is a tool chuck that is provided on a main shaft that is made of a hollow shaft and is movable in the axial direction, and includes a chuck body having a collet knot fitted into a front end opening of the main shaft, and a chuck body that has a collet knot fitted into a front end opening of the main shaft, a tapered sleeve slidably fitted in one knot in the axial direction; a front cover fitted onto the sleeve and fixed to the chuck body; interposed between the sleeve and the front cover; a spring member that biases the sleeve so as to clamp the collet; a spring member that is disposed to extend through the outer circumferential portion of the chuck body in parallel with the main axis, and has an inner end abutting the sleeve and an outer end thereof; is provided with a plurality of unclamp pins protruding rearward from the chuck body and an outer cylinder fitted onto the main shaft, and when the main shaft moves backward 1 to 17, the unclamp pins abut against the outer cylinder 17. The collet is pushed into the sleeve side, and the sleeve is pushed against the spring member to unclamp the collet.

前記外筒は、回転自在にするか又は前記主軸と同期回転
さぜることが好ま1−7い。
Preferably, the outer cylinder is rotatable or rotates synchronously with the main shaft.

作用 上記構成により、主軸が後退してアンクランプピンが外
筒の端面に当接すると、チャックは自動的にアンクラン
プとなり、主軸が前進してアンクランプピンが外筒から
離れると、自動的にクランプ状態に戻る。
Effect With the above configuration, when the main shaft retreats and the unclamp pin comes into contact with the end face of the outer cylinder, the chuck automatically unclamps, and when the main shaft moves forward and the unclamp pin leaves the outer cylinder, the chuck automatically unclamps. Return to clamp state.

また、前記外筒が回転自在又は前記主軸と同期回転する
ようにずれば、前記主軸の回転中でもクランプ・アンク
ランプさせることが可能である。
Further, if the outer cylinder is rotatable or shifted so as to rotate synchronously with the main shaft, clamping and unclamping can be performed even while the main shaft is rotating.

実施例 以下、本発明の実施例を図面に基づいて説明する。Example Embodiments of the present invention will be described below based on the drawings.

1は工作機械の主軸で、中空軸からなり、図示を省略し
た主軸頭に回転自在及び軸方向移動可能に支承され、回
転(−ながら軸方向に往復移動できるようになっている
Reference numeral 1 denotes the main shaft of the machine tool, which is a hollow shaft and is supported rotatably and movably in the axial direction by a main shaft head (not shown), so that it can reciprocate in the axial direction while rotating (-).

2はチャック本体で、前部にコレット3を有;7、後部
に連設した円筒部4を主軸1の前端開口部1−aに11
7、止めねじうで主軸1に固定されている。
2 is a chuck body, which has a collet 3 at the front; 7, a cylindrical part 4 connected to the rear part 11 at the front end opening 1-a of the main shaft 1;
7. It is fixed to the main shaft 1 with a set screw.

6はテーバ付きスリーブで、コ1/ット3に軸方向摺動
自在に被嵌され、後部にフランジ部7が連設されている
Reference numeral 6 denotes a tapered sleeve, which is fitted onto the cot 1/cut 3 so as to be slidable in the axial direction, and has a flange portion 7 connected to the rear thereof.

8は前カバーで、テーバ付きスリーブ6に被嵌され、ボ
ルト9にてチャック本体2に固定されている。
A front cover 8 is fitted onto the tapered sleeve 6 and fixed to the chuck body 2 with bolts 9.

10は皿ばねで、スリーブ6のフランジ部7と前1yt
<−8との間に介装され、そのばね圧でコ1ノット3を
クランプするようにスリーブ6を後方に付勢している。
10 is a disc spring, which connects the flange part 7 of the sleeve 6 and the front 1yt.
<-8, and its spring pressure urges the sleeve 6 rearward so as to clamp the knot 3.

11はアンクランプピンで、チャック本体2の円筒部4
に周方向に等間隔をおいて611所に配設され、かつ主
軸1の軸線と平行に延びる貫通孔12に軸方向移動可能
に嵌挿され、内端に突設置−た鍔部13がスリーブ6の
フランジ部7に当接すると共に、後端部14がチャック
本体2より突出している。
Reference numeral 11 denotes an unclamp pin, which is attached to the cylindrical portion 4 of the chuck body 2.
A sleeve 1 has a flange 13 which is disposed at 611 positions at equal intervals in the circumferential direction and is fitted into through holes 12 extending parallel to the axis of the main shaft 1 so as to be movable in the axial direction. 6 and the rear end 14 protrudes from the chuck body 2.

15は主軸1に被嵌1.た外筒で、主軸1と同期回転す
るが、軸方向には移動不可になっている。
15 is 1. which is fitted onto the main shaft 1. The outer cylinder rotates synchronously with the main shaft 1, but cannot move in the axial direction.

なお、該外筒15は軸方向には移動不可とし、回転のみ
自在としてもよい。
Incidentally, the outer cylinder 15 may be made immovable in the axial direction and may only be freely rotatable.

第1図は工具Tがクランプされた状態を示しており、こ
の状態で主軸1を回転させ、かつ必要により軸方向に往
復移動させて、工具Tにより加圧を行なう。
FIG. 1 shows a state in which the tool T is clamped, and in this state, the main shaft 1 is rotated and, if necessary, reciprocated in the axial direction to apply pressure with the tool T.

次に、工具Tをアンクランプして交換する場合には、第
2図に示すように主軸1゜を最後端位置まで後退させる
。主軸〕が後退し、アンクランプピン11の後端部14
が外筒15の端面に当接すると、アンクランプピン11
は皿ばね10を押1−縮めてテーパ付きスリーブ6を前
方に移動させる。
Next, when the tool T is unclamped and replaced, the main shaft is moved back 1° to the rearmost position as shown in FIG. main shaft] moves back, and the rear end 14 of the unclamp pin 11
When it comes into contact with the end surface of the outer cylinder 15, the unclamp pin 11
pushes the disc spring 10 to retract it and move the tapered sleeve 6 forward.

該スリーブ6の移動によってコレット3が開放され、工
具Tをアンクランプする。このアンクランプ状態におい
て工具Tの交換を行なうが、上述したアンクランプ動作
は主軸1が回転しているときにも可能であるから、主軸
1の回転中に工具Tを交換することができる。
The collet 3 is opened by the movement of the sleeve 6, and the tool T is unclamped. The tool T is replaced in this unclamped state, but since the above-described unclamping operation can be performed even when the main shaft 1 is rotating, the tool T can be replaced while the main shaft 1 is rotating.

発明の効果 本発明の工具用チャックは上述した構成であるから、ク
ランプ・アンクランプに油圧・空圧などの駆動源を必要
としない。
Effects of the Invention Since the tool chuck of the present invention has the above-described configuration, a drive source such as hydraulic pressure or pneumatic pressure is not required for clamping and unclamping.

また、主軸の中空孔にクランプ機構を設けないので、該
中空孔に工具交換ユニットを内蔵して、工具交換を自動
化することができる。しかもこの場合、主軸の回転中に
工具を交換させることか可能である。
Further, since no clamping mechanism is provided in the hollow hole of the main shaft, a tool changing unit can be built into the hollow hole to automate tool changing. Moreover, in this case, it is possible to change the tool while the spindle is rotating.

さらに、部品点数が少なく、構造が簡単で、安価に製作
提供できる。
Furthermore, the number of parts is small, the structure is simple, and it can be manufactured and provided at low cost.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明に係る工具用チャックの縦断正面図、第
2図は同アンクランプ状態を示す縦断正面図である。。 1・・・主軸      2・・・チャック本体3・・
・コレット    4・・・円筒部6・・・テーパ付き
スリーブ 8・・・前カバー    10・・・皿ばね11・・・
アンクランプピン 15・・・外筒 特許出願人  株式会社 森精機製作所代 理 人
FIG. 1 is a longitudinal sectional front view of a tool chuck according to the present invention, and FIG. 2 is a longitudinal sectional front view showing the tool chuck in an unclamped state. . 1...Main shaft 2...Chuck body 3...
・Collet 4...Cylindrical portion 6...Tapered sleeve 8...Front cover 10...Disc spring 11...
Unclamp pin 15... Outer cylinder patent applicant Mori Seiki Co., Ltd. Agent

Claims (2)

【特許請求の範囲】[Claims] (1)中空軸からなり、軸方向に移動可能な主軸に設け
られる工具用チャックであって、前記主軸の前端開口部
に嵌着されたコレットを有するチャック本体と、 前記コレットに軸方向摺動自在に被嵌されたテーパ付き
スリーブと、 前記スリーブに被嵌され、前記チャック本体に固定され
た前カバーと、 前記スリーブと前記前カバーとの間に介装され、前記コ
レットをクランプするように前記スリーブを付勢するば
ね部材と、 前記チャック本体の外周部に前記主軸と平行に貫通して
配設され、内端部が前記スリーブに当接すると共に、外
端部が前記チャック本体より後方に突出している複数の
アンクランプピンと、前記主軸に被嵌された外筒とを備
え、 前記主軸が後退したとき、前記アンクランプピンが前記
外筒に当接して前記スリーブ側に押し込まれ、前記ばね
部材に抗して前記スリーブを押動させ、前記コレットを
アンクランプするようになっている工具用チャック。
(1) A tool chuck consisting of a hollow shaft and provided on a main shaft that is movable in the axial direction, the chuck body having a collet fitted into the front end opening of the main shaft, and a chuck body that is slidable in the axial direction on the collet. a tapered sleeve that is freely fitted; a front cover that is fitted onto the sleeve and fixed to the chuck body; and a sleeve that is interposed between the sleeve and the front cover and configured to clamp the collet. a spring member that biases the sleeve; a spring member that is disposed to extend through the outer circumferential portion of the chuck body in parallel with the main shaft, an inner end portion of which abuts the sleeve, and an outer end portion of the spring member that extends rearwardly from the chuck body; It includes a plurality of protruding unclamp pins and an outer cylinder fitted onto the main shaft, and when the main shaft retreats, the unclamp pins abut against the outer cylinder and are pushed into the sleeve side, and the spring A tool chuck configured to unclamp the collet by pushing the sleeve against a member.
(2)前記外筒が、回転自在又は前記主軸と同期回転す
るようになっている請求項1記載の工具用チャック。
(2) The tool chuck according to claim 1, wherein the outer cylinder is rotatable or rotates synchronously with the main shaft.
JP18508090A 1990-07-12 1990-07-12 Tool chuck Expired - Fee Related JP2831814B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18508090A JP2831814B2 (en) 1990-07-12 1990-07-12 Tool chuck

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18508090A JP2831814B2 (en) 1990-07-12 1990-07-12 Tool chuck

Publications (2)

Publication Number Publication Date
JPH0475806A true JPH0475806A (en) 1992-03-10
JP2831814B2 JP2831814B2 (en) 1998-12-02

Family

ID=16164472

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18508090A Expired - Fee Related JP2831814B2 (en) 1990-07-12 1990-07-12 Tool chuck

Country Status (1)

Country Link
JP (1) JP2831814B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09174315A (en) * 1995-12-22 1997-07-08 Nec Corp Chuck mechanism
CN103706943A (en) * 2013-11-27 2014-04-09 江苏锐成机械有限公司 Disc spring type wedge-shaped hydraulic chuck for friction welding machine
CN115518730A (en) * 2022-09-29 2022-12-27 宁波一品生物技术有限公司 Preparation method and equipment of oleophobic titanium dioxide

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09174315A (en) * 1995-12-22 1997-07-08 Nec Corp Chuck mechanism
CN103706943A (en) * 2013-11-27 2014-04-09 江苏锐成机械有限公司 Disc spring type wedge-shaped hydraulic chuck for friction welding machine
CN115518730A (en) * 2022-09-29 2022-12-27 宁波一品生物技术有限公司 Preparation method and equipment of oleophobic titanium dioxide

Also Published As

Publication number Publication date
JP2831814B2 (en) 1998-12-02

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