JP3402572B2 - Spindle cutting fluid, air passage - Google Patents
Spindle cutting fluid, air passageInfo
- Publication number
- JP3402572B2 JP3402572B2 JP19727897A JP19727897A JP3402572B2 JP 3402572 B2 JP3402572 B2 JP 3402572B2 JP 19727897 A JP19727897 A JP 19727897A JP 19727897 A JP19727897 A JP 19727897A JP 3402572 B2 JP3402572 B2 JP 3402572B2
- Authority
- JP
- Japan
- Prior art keywords
- spindle
- hole
- drawbar
- fluid supply
- tool holder
- 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 - Lifetime
Links
Landscapes
- Auxiliary Devices For Machine Tools (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、工作機械のスピ
ンドルから工具の冷却などに用いる切削液と、工具ホル
ダの清掃に用いる空気とを切替えて送る、スピンドルの
切削液、空気通路に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spindle cutting fluid and an air passage for switching a cutting fluid used for cooling a tool and air used for cleaning a tool holder from a spindle of a machine tool. .
【０００２】[0002]
【従来の技術】従来、工作機械のスピンドルの切削液、
空気通路として、図１に示すように、スピンドル１内に
進退可能なドローバー２を嵌挿し、スピンドル１の前部
内に引込み機構４を設け、スピンドル１の前端部に設け
たテーパ孔１ａに工具３の筒状のテーパシャンク３ａを
嵌め、ドローバー２の後退によって引込み機構４の内側
係合部材４ａと外側係合部材４ｂとを動作させて、テー
パシャンク３ａの後端部内周面に突出した係合突起３ｂ
に係合させ、ドローバー２の後退方向への付勢によっ
て、テーパシャンク３ａをテーパ孔１ａの周面に押付
け、工具３の把持用フランジ３ｃ後面をスピンドル１前
面に当接させ、工具３のテーパシャンク３ａ内に突出す
る筒状アダプタ３ｄを工具３に固定し、前記アダプタ３
ｄを内側係合部材４ａ内に着脱可能に嵌合させ、ドロー
バー２には、切削液と空気とを切替え可能に圧送する流
体供給通路２ａを形成し、この供給通路２ａが前記アダ
プタ３ｄに接続するようにしてある。そして、スピンド
ル１の前端部に装着した工具３によって、工作物（ワー
ク）に切削などの加工を行う際に前記供給路２ａに切削
液を圧送し、工具３の前端部から加工部に切削液を供給
している。2. Description of the Related Art Conventionally, cutting fluid for spindles of machine tools,
As an air passage, as shown in FIG. 1, a retractable drawbar 2 is fitted in a spindle 1, a retracting mechanism 4 is provided in the front part of the spindle 1, and a tool 3 is provided in a tapered hole 1a provided in the front end part of the spindle 1. The cylindrical taper shank 3a is fitted and the drawbar 2 is retracted to operate the inner engagement member 4a and the outer engagement member 4b of the retracting mechanism 4 to engage the inner peripheral surface of the rear end portion of the taper shank 3a. Protrusion 3b
The puller bar 2 is urged in the backward direction to press the taper shank 3a against the peripheral surface of the taper hole 1a, and the rear surface of the gripping flange 3c of the tool 3 is brought into contact with the front surface of the spindle 1 to taper the tool 3. The cylindrical adapter 3d protruding into the shank 3a is fixed to the tool 3, and the adapter 3
d is removably fitted in the inner engagement member 4a, and the drawbar 2 is formed with a fluid supply passage 2a for switching the cutting fluid and the air so that the fluid can be switched. The supply passage 2a is connected to the adapter 3d. I am doing it. Then, when the tool 3 attached to the front end of the spindle 1 is used to perform machining such as cutting on a workpiece, the cutting fluid is pumped to the supply path 2a, and the cutting fluid is fed from the front end of the tool 3 to the machining section. Is being supplied.
【０００３】また、工作物の加工後には、切削液の供給
を停止して空気の供給に切替え、ドローバー２の前進に
よって、引込み機構４によるテーパシャンク３ａの係合
突起３ｂを解放し、工具自動交換装置（図示省略）によ
って前記フランジ３ｃを引き抜く際に、ドローバー２を
前進させ、流体供給通路２ａの適所に形成した複数の半
径方向孔２ｂが、スピンドル１の軸方向に沿って形成し
た複数の長孔１ｃの後端部に接続した外側半径方向孔１
ｂに、スピンドル１の内周面に嵌合固定したスリーブ５
の半径方向孔５ａを介して接続することで、前記供給通
路２ａから空気を長孔１ｃに通してスピンドル１の前端
面からフランジ３ｃの後端面などの後部に吹付け、この
後部に付着した切り粉やごみなどを除去し、清掃した工
具３と前記工具交換装置によってマガジンに戻すように
している。なお、空気の供給は、ドローバー２の後退に
よってこれの半径方向孔２ｂとスリーブ５の半径方向孔
５ａとが食い違うことで停止するようにしてある。After the work is machined, the supply of the cutting fluid is stopped and the supply of air is switched to the air supply, and the drawbar 2 is moved forward to release the engaging projection 3b of the taper shank 3a by the retracting mechanism 4, thereby automatically performing the tool automatic operation. When the flange 3c is pulled out by an exchanging device (not shown), the drawbar 2 is moved forward and a plurality of radial holes 2b formed at appropriate positions in the fluid supply passage 2a are formed along the axial direction of the spindle 1. Outer radial hole 1 connected to the rear end of slot 1c
b, the sleeve 5 fitted and fixed to the inner peripheral surface of the spindle 1
By connecting the air from the supply passage 2a through the elongated hole 1c, the air is blown from the front end surface of the spindle 1 to the rear portion such as the rear end surface of the flange 3c by connecting the radial passages 5a to the rear portion. The powder, dust, etc. are removed, and the cleaned tool 3 and the tool exchanging device return it to the magazine. The supply of air is stopped when the drawbar 2 retracts and the radial hole 2b of the drawbar 2 and the radial hole 5a of the sleeve 5 disagree with each other.
【０００４】[0004]
【発明が解決しようとする課題】しかし、前述したスピ
ンドルの切削液、空気通路では、工具のテーパシャンク
外周面の清掃ができず、また、スピンドルの前端面から
空気を吹出すための複数の長孔を形成することが困難で
あるという問題点があった。この発明は、前述した問題
点を解決して、工具ホルダのテーパシャンク外周面など
の清掃が確実にでき、スピンドルの前端面から空気を吹
出す前部空気通路の軸方向孔などを短くして、孔加工が
容易にできるようにしたスピンドルの切削液、空気通路
を提供することを目的としている。However, in the cutting fluid and the air passage of the spindle described above, the outer peripheral surface of the taper shank of the tool cannot be cleaned, and a plurality of lengths for blowing air from the front end surface of the spindle are not provided. There is a problem that it is difficult to form the holes. The present invention solves the above-mentioned problems, and can reliably clean the outer peripheral surface of the taper shank of the tool holder, and shortens the axial hole of the front air passage that blows air from the front end surface of the spindle. It is an object of the present invention to provide a spindle cutting fluid and an air passage that facilitates drilling.
【０００５】[0005]
【課題を解決するための手段】請求項１の発明は、工作
機械のスピンドルの前端部に工具ホルダのテーパシャン
クが嵌合するテーパ孔を形成し、前記スピンドルの前部
内周面にはスリーブを軸方向に沿って嵌合固定し、前記
スピンドルに同心に形成した貫通孔及び前記スリーブに
ドローバーを進退可能に嵌挿し、前記ドローバーの進退
動作によって前記テーパシャンクの後端から突出するプ
ルスタッドに係脱可能に係合する引込み機構を前記スピ
ンドル内に設け、前記ドローバーには切削液と空気とを
切替えて圧送する流体供給通路を軸方向に沿って形成
し、前記工具ホルダの前記スピンドルへの装着によって
前記流体供給通路から前記プルスタッドを経て工具ホル
ダまたは該工具ホルダに装着した工具から工作物の加工
部に切削液を供給するようにしたスピンドルの切削液、
空気通路であって、前記ドローバーの前部に前記流体供
給通路に連通しかつドローバーの外周面に開口する半径
方向孔を形成し、前記スリーブに該スリーブの軸方向に
延在する後部軸方向孔を形成し、前記後部軸方向孔の後
端部は前記ドローバーが前進動作して前記工具ホルダが
アンクランプされた時に前記半径方向孔に接続されると
ともに前記ドローバーが後退動作して前記工具ホルダが
クランプされた時に前記半径方向孔との連通が遮断さ
れ、かつ前記後部軸方向孔の前端を前記スリーブの前部
内に開口させることで後部空気通路が形成され、前記ス
ピンドルの前端部に前部軸方向孔を形成し、前記前部軸
方向孔の後端部を前記テーパ孔の後側に近接させて開口
させ、前記前部軸方向孔の前端部が前記スピンドル前端
面の前記テーパシャンク前側に連なる把持用フランジ後
端面に対応して開口することで前部空気通路が形成さ
れ、前記ドローバーが前進されることにより前記後部軸
方向孔が前記半径方向孔に連通されて前記流体供給通路
が形成された後、さらに前記ドローバーが前進されるこ
とにより前記スピンドルの後端面が前記把持用フランジ
の後端面から離間された時に前記流体供給通路から圧送
した空気を前記前部空気通路から把持用フランジ後端面
に吹出し、続いて工具ホルダをスピンドルから引抜くこ
とで、前記流体供給通路から前記スピンドルの前端部内
に圧送された空気を前記テーパ孔とテーパシャンクとの
間にできる隙間を通して前記スピンドルの前端から外側
へ吹出すようにし、さらに前 記ドローバーの前部にコネ
クションロッドの後部を前後方向に摺動可能に嵌合し、
前記コネクションロッドの前端面が前記プルスタッドの
後端面に常に当接されるようにスプリングで付勢し、前
記コネクションロッドの後端は前記流体供給通路に連通
されるとともに前記コネクションロッドの前端はプルス
タッドを通して工具ホルダ内に連通されるように構成し
たことを特徴とする。According to a first aspect of the present invention, a taper hole into which a taper shank of a tool holder is fitted is formed at a front end portion of a spindle of a machine tool, and a sleeve is provided at a front inner peripheral surface of the spindle. The drawbar is fitted and fixed along the axial direction, and the drawbar is inserted into the through hole formed concentrically with the spindle and the sleeve so that the drawbar can move forward and backward, and is engaged with the pull stud protruding from the rear end of the taper shank by the forward and backward movement of the drawbar. A retractable mechanism that is detachably engaged is provided in the spindle, and a fluid supply passage that switches the cutting fluid and air by pressure is formed in the draw bar along the axial direction, and the tool holder is mounted on the spindle. Cutting fluid is supplied from the fluid supply passage through the pull stud to the machining part of the workpiece from the tool holder or the tool mounted on the tool holder. Cutting fluid spindle so as,
An air passage, wherein a radial hole communicating with the fluid supply passage and opening to an outer peripheral surface of the draw bar is formed in a front portion of the draw bar, and a rear axial hole extending in an axial direction of the sleeve in the sleeve. And the rear end portion of the rear axial hole is connected to the radial hole when the draw bar moves forward and the tool holder is unclamped, and the draw bar moves backward to move the tool holder. When clamped, communication with the radial hole is blocked, and a rear air passage is formed by opening the front end of the rear axial hole into the front portion of the sleeve, and a front shaft is formed at the front end of the spindle. Direction hole is formed, a rear end portion of the front axial hole is opened close to the rear side of the taper hole, and a front end portion of the front axial hole is the taper shank of the spindle front end surface. Front air passage is formed by an opening in correspondence with the gripping flange rear surface continuous with the click front, it said rear shaft by Rukoto the drawbar is advanced
The fluid supply passage with the direction hole communicating with the radial hole.
After the formation of the drawbar, the drawbar is further advanced.
And the rear end surface of the spindle has the gripping flange
Blowing air were pumped from the fluid supply passage when spaced from the rear end face of the gripping flange rear surface from the front air passage, followed by withdrawal of the tool holder from the spindle, said spindle from said fluid supply passage Inside the front end of
Outside from the front end of the spindle through the gap as possible the air pumped in between the tapered hole and the tapered shank
To blow Suyo to, connection further to the front of the front Symbol drawbar
The rear part of the suction rod is slidably fitted in the front-back direction,
The front end surface of the connection rod is
The spring is urged so that it always contacts the rear end surface,
The rear end of the connection rod communicates with the fluid supply passage.
And the front end of the connection rod is pulled
It is characterized in that it is configured to communicate with the inside of the tool holder through the tod .
【０００６】請求項２の発明は、請求項１に記載したス
ピンドルの切削液、空気通路において、前記スリーブの
内周面に前後方向幅がある程度広い環状溝を形成し、こ
の環状溝と前記後部軸方向孔の後端部とを外側半径方向
孔によって接続し、前記環状溝が前記ドローバーの前進
動作によって該ドローバーに形成した半径方向孔に接続
されるようにしたことを特徴とする。According to a second aspect of the present invention, in the cutting fluid and air passage of the first aspect, an annular groove having a certain width in the front-rear direction is formed on the inner peripheral surface of the sleeve, and the annular groove and the rear portion are formed. The rear end of the axial hole is connected by an outer radial hole, and the annular groove is connected to a radial hole formed in the drawbar by the forward movement of the drawbar.
【０００７】[0007]
【発明の実施の形態】以下、この発明の一実施形態につ
き図２，図３を参照して説明する。図２，図３におい
て、１１はマシニングセンタなどの工作機械のスピンド
ルであり、スピンドル１１と同心に形成した貫通孔１２
にドローバー１３を進退可能に嵌挿し、ドローバー１３
の後部にこれを後方に付勢する複数の皿ばね（図示省
略）を設け、またドローバー１３の後端部にこれを前方
に押出す油圧シリンダ機構（図示省略）を設け、スピン
ドルヘッド１４に回動可能に支持してある。BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to FIGS. 2 and 3, 11 is a spindle of a machine tool such as a machining center, which has a through hole 12 formed concentrically with the spindle 11.
The drawbar 13 is inserted into the drawbar 13 so that the drawbar 13 can move forward and backward.
A plurality of disc springs (not shown) for urging the rear springs are provided at the rear part of the drawbar 13, and a hydraulic cylinder mechanism (not shown) for pushing the drawbars 13 forward is provided at the rear end part of the drawbar 13. It is movably supported.
【０００８】前記スピンドル１１前部の大外径部１１ａ
には、貫通孔１２の前端と環状の内側突起部１１ｂ内と
を介して連なる１／１０テーパなどのテーパ孔１１ｃを
形成し、テーパ孔１１ｃには工具１５を装着した工具ホ
ルダ１６の把持用フランジ１６ａ後側に突出するテーパ
シャンク１６ｂを着脱可能に密着嵌合するように構成し
てある。なお、内側突起部１１ｂは後面をスピンドル１
１の軸方向と直交させ、内側突起部１１ｂの前面側を前
拡がりに傾斜させてある。Large outer diameter portion 11a of the front portion of the spindle 11
Is formed with a tapered hole 11c such as a 1/10 taper that is continuous through the front end of the through hole 12 and the inside of the annular inner protrusion 11b. The tapered hole 11c is for gripping the tool holder 16 in which the tool 15 is mounted. The taper shank 16b protruding to the rear side of the flange 16a is detachably and closely fitted. In addition, the inner protrusion 11b has the rear surface of the spindle 1
1, the front surface side of the inner protruding portion 11b is inclined to the front side so as to be orthogonal to the axial direction of 1.
【０００９】工具ホルダ１６のテーパシャンク１６ｂ後
方にはプルスタッド１７を突出させ、プルスタッド１７
の軸部１７ａ後端にこれより大外径の係止部１７ｂを一
体に設け、係止部１７ｂは、後端部が後側に小径となる
円錐台部を形成し、前端面が軸部１７ａの後端からその
軸方向と直角に外周側に突出させてある。A pull stud 17 is projected to the rear of the taper shank 16b of the tool holder 16.
The locking portion 17b having a larger outer diameter than that is integrally provided at the rear end of the shaft portion 17a, and the locking portion 17b forms a truncated cone portion having a rear end having a small diameter and a front end surface having a shaft portion. It projects from the rear end of 17a to the outer peripheral side at right angles to the axial direction.
【００１０】スピンドル１１の軸方向の適所には貫通孔
１２内に筒状のスリーブ１８を嵌合固定し、スリーブ１
８の前端部に大内径部１８ａを形成し、貫通孔１２内の
スリーブ１８の前方に台座２０を嵌合固定し、スリーブ
１８の大内径部１８ａおよび台座２０内にコレット１９
を嵌め、貫通孔１２の台座２０の前側にセパレータ２１
を嵌合固定してある。A tubular sleeve 18 is fitted and fixed in the through hole 12 at a proper position in the axial direction of the spindle 11, and the sleeve 1
8 has a large inner diameter portion 18a formed therein, a pedestal 20 is fitted and fixed in front of the sleeve 18 in the through hole 12, and a collet 19 is formed in the large inner diameter portion 18a of the sleeve 18 and the pedestal 20.
The separator 21 on the front side of the pedestal 20 of the through hole 12.
Are fitted and fixed.
【００１１】前記ドローバー１３は、後部１３1 に前部
１３2 をねじ嵌合させて連結し、前部１３2 の外周面に
後側，前側環状溝１３ａ，１３ｂを形成し、これらの間
に係合部１３ｃを形成し、前側環状溝１３ｂの前方に若
干大外径の前側端部１３ｄを設けてある。The drawbar 13 is formed by connecting a front portion 13 2 to a rear portion 13 1 by screw fitting, and forming rear and front annular grooves 13 a and 13 b on the outer peripheral surface of the front portion 13 2 and between them. An engaging portion 13c is formed, and a front end portion 13d having a slightly larger outer diameter is provided in front of the front annular groove 13b.
【００１２】図４にも示すように、前記コレット１９
は、円周方向に４等分して分割し、これらの分割片１９
1 の内周面には、後側から前側に向けて、後内側突出部
１９ａ、ガイド突出部１９ｂ、係合突出部１９ｃ、およ
び前内側突出部１９ｄを軸方向に間隙を設けて形成し、
各分割片１９1 の外周面には、後外側突出部１９ｅ、前
外側突出部１９ｆを両端部に形成し、さらに分割片１９
1 の前端部内周面には前端傾斜面１９ｉを形成してあ
る。As shown in FIG. 4, the collet 19
Is divided into four equal parts in the circumferential direction, and these divided pieces 19
On the inner peripheral surface of 1 , from the rear side to the front side, a rear inner side protrusion 19a, a guide protrusion 19b, an engagement protrusion 19c, and a front inner side protrusion 19d are formed with a gap in the axial direction,
A rear outer protruding portion 19e and a front outer protruding portion 19f are formed on both ends of the outer peripheral surface of each of the divided pieces 19 1.
A front end inclined surface 19i is formed on the inner peripheral surface of the front end portion of 1 .
【００１３】そして、後内側突出部１９ａの外周面に
は、後側を小内径とし、前記ドローバー１３の係合部１
３ｃに形成した緩傾斜面１３ｃ1 に係合する引込み機構
の増力機構２２を構成するための緩傾斜面１９ａ1 を形
成してある。また、コレット１９の各分割片１９1 の後
内側突出部１９ａ、後外側突出部１９ｅの後側には後端
突出部１９ｇを形成し、後端突出部１９ｇの外周面には
凹溝１９ｈが形成してあり、これらの凹溝１９ｈには両
端部を連結した環状コイルばね２３を嵌合させて、各分
割片１９1 の後部を縦径方向に付勢してある。On the outer peripheral surface of the rear inner protruding portion 19a, the rear side has a small inner diameter, and the engaging portion 1 of the draw bar 13 is formed.
A gently inclined surface 19a 1 for forming the force increasing mechanism 22 of the retracting mechanism that engages with the gently inclined surface 13c 1 formed on 3c is formed. Further, a rear inner side protruding portion 19a and a rear outer side protruding portion 19e are formed with a rear end protruding portion 19g on the rear side of each divided piece 19 1 of the collet 19, and a concave groove 19h is formed on the outer peripheral surface of the rear end protruding portion 19g. An annular coil spring 23 having both ends connected to each other is fitted in these recessed grooves 19h to urge the rear portion of each divided piece 19 1 in the longitudinal direction.
【００１４】図４にも示すように、前記台座２０は、円
筒体の後端部に後側が大内径となる後端テーパ面２０ａ
を形成し、円筒体の内周面の前端部に大内径部２０ｂを
形成し、前部には周方向の４箇所に等間隔で軸方向に沿
う切込み溝２０ｃを形成し、これらの溝２０ｃを前端に
開口させてある。図４にも示すように、前記セパレータ
２１は、環状体２１ａの後面に矩形状の４枚の位置決め
板２１ａを等間隔で放射状に突出させ、位置決め板２１
ａの外側端部を環状体２１ａの外周から突出させ、環状
体２１ａの後面に直角三角形のコレット拡開突起２１ｃ
を突出させ、これらの拡開突起２１ｃを位置決め板２１
ｂ間の中央にそれぞれ配置してある。前記拡開突起２１
ｃは、環状体２１ａの前側が大径となるテーパ孔２１ｄ
の後面周縁に直角を挾む一辺を環状体２１ａに直立さ
せ、前記直角を挾む他辺を環状体２１ａの後面に固着
し、斜辺を軸線に対し傾斜させ、後側が低くなる外側傾
斜面を形成して、環状体２１ａの中央に近い部分に配置
してある。As shown in FIG. 4, the pedestal 20 has a rear end tapered surface 20a having a large inner diameter on the rear side at the rear end of the cylindrical body.
A large inner diameter portion 20b is formed at the front end portion of the inner peripheral surface of the cylindrical body, and notch grooves 20c are formed at four positions in the circumferential direction along the axial direction at equal intervals in the front portion. Is opened at the front end. As shown in FIG. 4, in the separator 21, four rectangular positioning plates 21a are radially projected at regular intervals on the rear surface of the annular body 21a to form the positioning plate 21a.
The outer end of a is projected from the outer periphery of the annular body 21a, and a collet expanding projection 21c of a right triangle is formed on the rear surface of the annular body 21a.
And project these expansion protrusions 21c into the positioning plate 21.
They are arranged in the center between b. The expansion protrusion 21
c is a tapered hole 21d having a large diameter on the front side of the annular body 21a.
One side that crosses a right angle to the peripheral edge of the rear surface is upright to the annular body 21a, the other side that sandwiches the right angle is fixed to the rear surface of the annular body 21a, the oblique side is inclined with respect to the axis line, and the outer inclined surface that lowers the rear side is formed. It is formed and arranged in a portion close to the center of the annular body 21a.
【００１５】そして、セパレータ２１の位置決め板２１
ｂの前端をスピンドル１１の内側突起部１１ｂ後面に当
接させ、台座２０の切込み溝２０ｃに位置決め板２１ｂ
をそれぞれ係合させて、台座２０の前端を内側突起部１
１ｂの後面に当接させてある。また、台座２０内には、
コイルばね２３を装着したコレット１９が嵌めてあり、
その分割片１９1 間にセパレータ２１の位置決め板２１
ａを挿入してある。なお、前述した構成は、出願人が先
に特願平７−２３４８９８号として平成７年９月１３日
に出願したものと実質的に同構成である。The positioning plate 21 of the separator 21
The front end of b is brought into contact with the rear surface of the inner protrusion 11b of the spindle 11, and the positioning plate 21b is inserted into the cut groove 20c of the pedestal 20.
To engage the front end of the pedestal 20 with the inner protrusion 1
It is brought into contact with the rear surface of 1b. Also, in the pedestal 20,
The collet 19 fitted with the coil spring 23 is fitted,
A positioning plate 21 for the separator 21 is provided between the divided pieces 19 1.
a is inserted. The above-mentioned structure is substantially the same as that previously filed by the applicant on September 13, 1995 as Japanese Patent Application No. 7-234898.
【００１６】前記ドローバー１３には、流体供給通路２
４を軸方向に沿って形成し、流体供給通路２４の後部に
は、切削液と空気とを切替えて、これらの一方を前方に
圧送する流体供給手段（図示省略）を接続し、ドローバ
ー１３の前部にコネクションロッド２５の後部を前後方
向に摺動可能に嵌合させ、ドローバー１３の後部１３ 1
前端と前記ロッド２５との間には、ドローバー１３の後
部内に収容したコイル状のスプリング２６を介在させて
ロッド２５を前側に付勢している。A fluid supply passage 2 is provided in the draw bar 13.
4 is formed along the axial direction and is provided at the rear of the fluid supply passage 24.
Switches between cutting fluid and air, one of them forward
Connect a fluid supply means (not shown) for pressure feeding and drawbar
-13 rear of the connection rod 25 to the front and rear
Slidably fitted to the rear side of the drawbar 13 1
Between the front end and the rod 25, behind the drawbar 13.
With a coiled spring 26 housed inside
The rod 25 is biased to the front side.
【００１７】コネクションロッド２５の後部２５ａに
は、この後部２５ａより小外径の前部２５ｂをねじ嵌合
させ、前部２５ｂをドローバー１３の前端から突出さ
せ、前部２５ｂの前端部に形成した大外径部２５ｃをド
ローバー１３の前端面に対し当接可能にし、前記ロッド
２５には軸方向に貫通する流体供給孔２７を形成し、流
体供給孔２７の後端を流体供給通路２４の前部に連通さ
せて、その一部とし、ドローバー１３の前部１３2 には
周方向の複数箇所に半径方向孔２８を形成し、これらの
半径方向孔２８の内端を流体供給通路２４と連通させ、
外端を前部１３2 の外周面に開口させ、外周面に近い部
分を断面台形状に拡げてある。A front portion 25b having an outer diameter smaller than that of the rear portion 25a is screw-fitted to the rear portion 25a of the connection rod 25 so that the front portion 25b projects from the front end of the drawbar 13 and is formed at the front end portion of the front portion 25b. The large outer diameter portion 25c can be brought into contact with the front end surface of the draw bar 13, a fluid supply hole 27 penetrating in the axial direction is formed in the rod 25, and the rear end of the fluid supply hole 27 is located in front of the fluid supply passage 24. and communicates with the part, and a part to form a radial bore 28 in the front 13 2 at a plurality of locations in the circumferential direction of the drawbar 13, communication with the fluid supply passage 24 to the inner ends of these radial holes 28 Let
The outer end is opened to the outer peripheral surface of the front 13 2, it is spread the portion near the outer peripheral surface trapezoidal cross section.
【００１８】前記スリーブ１８には複数の後部軸方向孔
２９を形成し、後部軸方向孔２９の後端とスリーブ１８
に設けた複数の外側半径方向孔３０の中間部とをそれぞ
れ接続し、外側半径方向孔３０の内端をスリーブ１８の
内周面に形成した環状溝３１にドローバー１３の前進に
よって連通するようにし、外側半径方向孔３０の外端部
を栓などによって閉塞し、後部軸方向孔２９の前端をス
リーブ１８の前部の大内径部１８ａに開口させること
で、後部空気通路３２を形成してある。A plurality of rear axial holes 29 are formed in the sleeve 18, and the rear end of the rear axial holes 29 and the sleeve 18 are formed.
The outer ends of the outer radial holes 30 are connected to the respective intermediate portions of the outer radial holes 30 so that the inner ends of the outer radial holes 30 communicate with the annular groove 31 formed in the inner peripheral surface of the sleeve 18 by advancing the draw bar 13. A rear air passage 32 is formed by closing the outer end portion of the outer radial hole 30 with a plug or the like and opening the front end of the rear axial hole 29 to the large inner diameter portion 18a of the front portion of the sleeve 18. .
【００１９】また、スピンドル１１の前端大径部１１ａ
には周方向の複数箇所に前部軸方向孔３３を形成し、前
部軸方向孔３３の後端部に短い半径方向孔３４を接続
し、短い半径方向孔３４の内端をスピンドル１１に設け
たテーパ孔１１ｃの後側に近接させて内側突起部１１ｂ
の前側に開口させ、前部軸方向孔３３の前端をスピンド
ル１１前端面に開口させ、これらの開口を工具ホルダ１
６の把持用フランジ１６ａの後端面と対向するようにし
た前部空気通路３５を形成してある。Further, the front end large diameter portion 11a of the spindle 11 is
The front axial holes 33 are formed at a plurality of positions in the circumferential direction, the short radial holes 34 are connected to the rear ends of the front axial holes 33, and the inner ends of the short radial holes 34 are connected to the spindle 11. The inner protruding portion 11b is provided close to the rear side of the provided tapered hole 11c.
Of the tool holder 1 and the front end of the front axial hole 33 is opened to the front end surface of the spindle 11.
A front air passage 35 is formed so as to face the rear end surface of the gripping flange 16a of No. 6.
【００２０】そして、工具ホルダ１６には、後端がプル
スタッド１７の後端面に開口し、工具ホルダ１６の前端
部または工具ホルダ１６に装着した工具１５の前端など
の適所から切削液を工作物に切削などの加工を行う部分
に供給するための切削液供給路３６を設けてある。な
お、図１，図２において、３７はスリーブ１８の内周面
の軸方向の複数箇所に設けた環状溝、３８は環状溝３７
に嵌合保持させたシールリングであり、３９は前記ロッ
ド２５の後部２５ａの前側をスリーブ１８内に連通させ
る通気路である。The rear end of the tool holder 16 is opened at the rear end surface of the pull stud 17, and cutting fluid is supplied from a proper position such as the front end of the tool holder 16 or the front end of the tool 15 mounted on the tool holder 16. Further, a cutting fluid supply path 36 for supplying to a portion to be processed such as cutting is provided. 1 and 2, 37 is an annular groove provided at a plurality of axial positions on the inner peripheral surface of the sleeve 18, and 38 is an annular groove 37.
The seal ring 39 is fitted and retained in the sleeve 18. Reference numeral 39 is an air passage that connects the front side of the rear portion 25a of the rod 25 to the inside of the sleeve 18.
【００２１】次に、前記実施形態の切削液、空気通路の
動作につき、スピンドルの動作と共に説明する。図示省
略した油圧シリンダ機構の動作によってドローバー１３
を前進させてその前側端部１３ｄをコレット１９の各分
割片１９1 の係合部１９ｃに係合させた前進位置で、コ
レット１９の前内側突出部１９ｄの後側が小径となる前
端傾斜面１９ｉを、セパレータ２１の拡開突起２１ｃの
外側傾斜面に支持させて、各分割片１９1 を前端側が拡
開した傾斜状態に保って停止させる。Next, the operation of the cutting fluid and the air passage of the above embodiment will be described together with the operation of the spindle. The drawbar 13 is operated by the operation of a hydraulic cylinder mechanism (not shown).
At the forward position where the front end 13d of the collet 19 is engaged with the engaging portion 19c of each divided piece 19 1 of the collet 19, the front end inclined surface 19i having a small diameter on the rear side of the front inner protrusion 19d of the collet 19 Is supported on the outer inclined surface of the expansion protrusion 21c of the separator 21, and each divided piece 19 1 is stopped while being held in an inclined state in which the front end side is expanded.
【００２２】この状態で、流体供給通路２４の後部に設
けた流体供給手段の作動によって空気をドローバー１３
に設けた流体供給通路２４に圧送し、空気の大部分がコ
ネクションロッド２５に設けた流体供給孔２７および台
座２０の前端部内を経てスピンドル１１のテーパ孔１１
ｃから、前記空気の一部が台座２０内から前部空気通路
３５を通って、それぞれスピンドル１１の前端外側に吹
出す。また、空気の他の一部がドローバー１３に設けた
半径方向孔２８およびスリーブ１８に設けた後部空気通
路３２を通ってスリーブ１８の前端部内に送出す。In this state, air is drawn by the draw bar 13 by the operation of the fluid supply means provided at the rear of the fluid supply passage 24.
The air is sent under pressure to the fluid supply passage 24 provided in the connection rod 25, and most of the air passes through the fluid supply hole 27 provided in the connection rod 25 and the front end portion of the pedestal 20, and the tapered hole 11 of the spindle 11
From c, a part of the air is blown from the inside of the pedestal 20 through the front air passage 35 to the outside of the front end of the spindle 11. In addition, another part of the air is sent into the front end portion of the sleeve 18 through the radial hole 28 provided in the drawbar 13 and the rear air passage 32 provided in the sleeve 18.
【００２３】図示省略した工具自動交換装置によって、
工具ホルダ１６の把持用フランジ１６ａを把持してテー
パシャンク１６ｂをスピンドル１１のテーパ孔１１ｂに
嵌合させ、テーパシャンク１６ｂの後端から突出したプ
ルスタッド１７の軸部１７ａをセパレータ２１の環状体
２１ａに挿通し、軸部１７ａの後端に設けた係止部１７
ｂをコレット１９の各分割片１９1 の前内側突出部１９
ｄ後方に位置させ、係止部１７ｂの後端面をドローバー
１３に嵌めた前記ロッド２５の前端面に当接させる。By an automatic tool changer (not shown),
The gripping flange 16a of the tool holder 16 is gripped to fit the tapered shank 16b into the tapered hole 11b of the spindle 11, and the shaft portion 17a of the pull stud 17 protruding from the rear end of the tapered shank 16b is attached to the annular body 21a of the separator 21. The locking portion 17 provided at the rear end of the shaft portion 17a.
b is a front inside protrusion 19 of each divided piece 19 1 of the collet 19.
The rear end surface of the locking portion 17b is brought into contact with the front end surface of the rod 25 fitted to the drawbar 13 at the rear position d.
【００２４】その後、前記工具自動交換装置による工具
ホルダ１６の前記フランジ１６ａの把持を解放し、油圧
シリンダ機構の動作を解除し、前記スプリング２６のば
ね力に抗してドローバー１３を後退させ、ドローバー１
３とコレット１９とが後退を続け、コレット１９の分割
片１９１の前内側突出部１９ｂ後端面がプルスタッド１
７の係止部１７ｂの前端面に係止した状態になる。[0024] Then, the automatic tool changer releases the gripping of the flange 16a of the tool holder 16 by, to cancel the operation of the hydraulic cylinder mechanism, the drawbar 13 against the play <br/> roots force of the spring 26 Back, drawbar 1
3 and the collet 19 continues to retract, divided pieces 19 1 of the front inner protrusion 19b rear end face pull stud 1 collet 19
7 is in a state of being locked to the front end surface of the locking portion 17b of No. 7.
【００２５】ドローバー１３が後退を続けることで、工
具ホルダ１６のテーパシャンク１６ｂ外周面がスピンド
ル１１のテーパ孔１１ｃ周面に圧接し、工具ホルダ１６
のフランジ１６ａ後端面がスピンドル１１の前端面に当
接し、ドローバー１３の係合部１３ｃの傾斜した後面が
コレット１９の分割片１９1 に形成した後内側突出部１
９ａの傾斜した後面に乗り上げる。As the draw bar 13 continues to retreat, the outer peripheral surface of the taper shank 16b of the tool holder 16 comes into pressure contact with the peripheral surface of the taper hole 11c of the spindle 11, and the tool holder 16
The rear end surface of the flange 16a of the rear end abuts on the front end surface of the spindle 11, and the inclined rear surface of the engaging portion 13c of the drawbar 13 is formed on the split piece 19 1 of the collet 19 to form the rear inner protruding portion 1
Ride on the inclined rear surface of 9a.
【００２６】続いて、ドローバー１３の係合部１３ｃの
外周面後部の緩傾斜面１３ｃ1 が分割片１９1 の後内側
突出部１９ａ内周面の緩傾斜面１９ａ1 に圧接し、ドロ
ーバー１３が前側端部１３ｄの外周面に分割片１９1 の
ガイド突出部１９ｂの内周面を嵌合支持した引込み状態
となる。前記動作の際に、テーパシャンク１６ｂの外周
面とテーパ孔１１の周面とが近接すると、これらの間か
ら台座２０内に圧送した空気がスピンドル１１の前端面
外に吹出すことで、前記外周面と周面との間に切り粉や
ごみが介在していると、これらを外部に押出し、またス
ピンドル１１の前端面と工具ホルダ１６の前記フランジ
１６ａとの間に切り粉やごみが介在していると、これら
を外部に排出する。Subsequently, the gently inclined surface 13c 1 at the rear of the outer peripheral surface of the engaging portion 13c of the draw bar 13 is pressed against the gently inclined surface 19a 1 at the inner peripheral surface of the rear inner protruding portion 19a of the split piece 19 1 , so that the draw bar 13 is formed. The inner peripheral surface of the guide projecting portion 19b of the divided piece 19 1 is fitted and supported on the outer peripheral surface of the front end portion 13d to be in a retracted state. When the outer peripheral surface of the taper shank 16b and the outer peripheral surface of the tapered hole 11 come close to each other during the operation, the air pressure-fed into the pedestal 20 from between them blows out of the front end surface of the spindle 11, so that the outer peripheral surface is If chips and dust are present between the surface and the peripheral surface, they are extruded to the outside, and there are dust and dust between the front end face of the spindle 11 and the flange 16a of the tool holder 16. Then, these are discharged to the outside.
【００２７】そして、テーパシャンク１６ｂの外周面が
テーパ孔１１ｃの周面に嵌合すると、台座２０内の空気
が前部空気通路３５からスピンドル１１の前端面と前記
フランジ１６ａとの間から外側に吹出し、これらの間に
切り粉やごみが介在していると、これらを外部に排出す
る。なお、台座２０内には流体供給通路２４から半径方
向孔２８を介しスリーブ１８に設けた後部空気通路３２
を経て、空気をスリーブ１８内の後部に送り、台座２０
内を経てスピンドル１１の前端面と前記フランジ１６ａ
の後端面との間から外側に吹出し、これらの間の清掃が
できる。When the outer peripheral surface of the taper shank 16b is fitted to the peripheral surface of the taper hole 11c, the air in the pedestal 20 moves from the front air passage 35 to the outside from between the front end surface of the spindle 11 and the flange 16a. When air is blown out and chips and dust are present between them, they are discharged to the outside. In the pedestal 20, the rear air passage 32 provided in the sleeve 18 from the fluid supply passage 24 through the radial hole 28.
Air is sent to the rear part of the sleeve 18 via the pedestal 20.
Through the inside and the front end surface of the spindle 11 and the flange 16a.
The space between the rear end face and the rear end face can be blown to the outside to clean between them.
【００２８】さらに、流体供給通路２４からコネクショ
ンロッド２５の流体供給孔２７を介して工具ホルダ１６
のプルスタッド１７の後端面に開口した切削液供給路３
６に空気を圧送し、その前端から空気が吹出すことで、
切削液供給路３６内の切り粉やごみの清掃もできる。Further, the tool holder 16 is inserted from the fluid supply passage 24 through the fluid supply hole 27 of the connection rod 25.
Cutting fluid supply passage 3 opened at the rear end face of the pull stud 17 of
By sending air to 6 and blowing out air from its front end,
It is also possible to clean chips and dust in the cutting fluid supply passage 36.
【００２９】前記ドローバー１３の引込み状態では、こ
れを複数の皿ばねによって軸方向後方に付勢しており、
図２に示すように、ドローバー１３の係合部１３ｃ外周
面に後側が小外径になる緩傾斜面１３ｃ1 と、コレット
１９の各分割片１９1 の後内側突出部１９ａ内周面の後
側が大内径になる緩傾斜面１９ａ1 とが緩やかな傾斜角
度で圧接することで、ドローバー１３の外周側に向かう
余力が大きく、外周側に前記係合部１３ｃによって前記
後内側突出部１９ａを強く押付け、工具ホルダ１６をク
ランプ状態にする。In the retracted state of the draw bar 13, the draw bar 13 is biased axially rearward by a plurality of disc springs,
As shown in FIG. 2, on the outer peripheral surface of the engaging portion 13c of the drawbar 13, a gently inclined surface 13c 1 having a small outer diameter on the rear side, and the rear inner protruding portion 19a of the split piece 19 1 of the collet 19 By pressing the gently inclined surface 19a 1 having a large inner diameter at a gentle inclination angle, the reserve capacity toward the outer peripheral side of the drawbar 13 is large, and the rear inner projecting portion 19a is strongly strengthened on the outer peripheral side by the engaging portion 13c. Pressing the tool holder 16 into a clamped state.
【００３０】前記クランプ状態では、各分割片１９1 の
後端部を拡げ、これらの後内側突出部１９ａの外周側に
突出している後外側突出部１９ｅの前面を、台座２０の
後端テーパ面２０ａに圧接し、前記皿ばねのばね力を数
倍に増力させてプルスタッド１７の係止部１７ｂを係止
する増力機構２２をドローバー１３の前部で働かせ、台
座２０にコレット１９の分割片１９1 を強力に固定して
いる。また、ドローバー１３に設けた流体供給通路２４
がコネクションロッド２５の流体供給孔２７を介してプ
ルスタッド１７の後端面に開口した切削液供給路３６の
後端部に接続している。In the clamped state, the rear end portions of the respective split pieces 19 1 are expanded, and the front surface of the rear outer protruding portion 19e protruding to the outer peripheral side of these rear inner protruding portions 19a is connected to the rear end tapered surface of the pedestal 20. 20a, the spring force of the disc spring is increased to several times, and the force increasing mechanism 22 that locks the locking portion 17b of the pull stud 17 is acted on the front portion of the draw bar 13, and the pedestal 20 divides the collet 19 into pieces. It firmly fixes 19 1 . In addition, the fluid supply passage 24 provided in the drawbar 13
Is connected to the rear end portion of the cutting fluid supply passage 36 opened on the rear end surface of the pull stud 17 through the fluid supply hole 27 of the connection rod 25.
【００３１】そして、スピンドル１１を回転させつつ、
スピンドルヘッド１４と共に前進させ、適時に流体供給
通路２４の後部に設けた流体供給手段を切替え動作させ
ることで、切削液を流体供給通路２４から切削液供給路
３６に圧送し、工具ホルダ１６の前端部、またはこれに
装着した工具１５の前端から噴出させ、工具１５による
工作物の切削などの加工を行う加工部に切削液を供給
し、前記加工部を冷却し、かつ切り粉を加工部外に排出
する。Then, while rotating the spindle 11,
By moving forward with the spindle head 14 and switching operation of the fluid supply means provided at the rear of the fluid supply passage 24 at appropriate times, the cutting fluid is pressure-fed from the fluid supply passage 24 to the cutting fluid supply passage 36, and the front end of the tool holder 16 is moved. Part or the front end of the tool 15 attached thereto, and the cutting liquid is supplied to a processing part that performs processing such as cutting of a workpiece by the tool 15, the processing part is cooled, and cutting chips are removed from the processing part. To discharge.
【００３２】切削などの加工を行った後、切削液の供給
を停止させ、スピンドル１１などの各部材を加工前の位
置に後退復帰させてスピンドル１１の回転を停止させ
る。なお、前述したクランプ状態では、ドローバー１３
に設けた流体供給通路２４に接続している半径方向孔２
８とスリーブ１８の環状溝３１とが、図５の（Ａ）に示
すように、ずれているので、切削液がスリーブ１８の後
部空気通路３２に流入することがない。After machining such as cutting, the supply of the cutting fluid is stopped, each member such as the spindle 11 is returned to the position before machining, and the rotation of the spindle 11 is stopped. In the clamped state described above, the drawbar 13
Radial hole 2 connected to a fluid supply passage 24 provided in
8 and the annular groove 31 of the sleeve 18 are displaced as shown in FIG. 5A, the cutting fluid does not flow into the rear air passage 32 of the sleeve 18.
【００３３】切削液の供給停止およびスピンドル１１な
どの後退復帰後には、工具ホルダ１６の自動交換を行
う。この自動交換は、前記工具自動交換装置の動作によ
って、クランプ状態の工具ホルダ１６の把持用フランジ
１６ａを把持し、油圧シリンダ機構を動作させてドロー
バー１３を前進させ、図３に示すように、ドローバー１
３の前側端部１３ｄ前面をコレット１９の各分割片１９
1 の係合突出部１９ｃ後面に支持させ、各分割片１９1
の後端突出部１９ｅの凹溝１９ｈに嵌めた環状のコイル
ばね２３のばね力によって、コレット１９の後部が小径
になるように各分割片１９1 を若干傾斜させ、ドローバ
ー１３の前側端部１３ｄ前面以外のコレット１９内に挿
入した前部を、各分割片１９1 と若干の隙間を形成す
る。After the supply of cutting fluid is stopped and the spindle 11 or the like is returned to the backward direction, the tool holder 16 is automatically replaced. This automatic exchange is performed by the operation of the automatic tool changer, which grasps the grasping flange 16a of the tool holder 16 in a clamped state, operates the hydraulic cylinder mechanism to advance the drawbar 13, and as shown in FIG. 1
The front end 13d of 3 is the front surface of the collet 19 divided into pieces 19
The divided protrusions 19 1 are supported on the rear surface of the engaging protrusion 19c of 1
By the spring force of the annular coil spring 23 fitted in the recessed groove 19h of the rear end protruding portion 19e, each split piece 19 1 is slightly inclined so that the rear portion of the collet 19 has a small diameter, and the front end portion 13d of the draw bar 13 is formed. The front portion inserted into the collet 19 other than the front surface forms a slight gap with each divided piece 19 1 .
【００３４】ドローバー１３の前進を続けることで、コ
レット１９の各分割片１９1 の係合突出部１９ｃをドロ
ーバー１３の前側端部１３ｄにより、コネクションロッ
ド２５の大外径部２５ｃを介して押出し、コレット１９
を前進させ、各分割片１９1の前内側突出部１９ｄ後面
をプルスタッド１７の係止部１７ｂ前面と離間させ、分
割片１９1 の後外側突出部１９ｅ前面を台座２０の後端
テーパ面２０ａ前方に移動させると共に、各分割片１９
1 の前外側突出部１９ｆの前端傾斜面１９ｉをセパレー
タ２１のコレット拡開突起２１ｃの外側傾斜面に当接さ
せ、各分割片１９1 の前内側突出部１９ｄ後面をプルス
タッド１７の係止部１７ｂ前面と離間させる。By continuing the forward movement of the draw bar 13, the engaging protrusion 19c of each divided piece 19 1 of the collet 19 is pushed by the front end 13d of the draw bar 13 through the large outer diameter portion 25c of the connection rod 25, Collet 19
To separate the rear surface of the front inside projection 19d of each divided piece 19 1 from the front surface of the engaging portion 17b of the pull stud 17, and the front surface of the rear outside projection 19e of the divided piece 19 1 to the rear end tapered surface 20a of the pedestal 20. While moving forward, each divided piece 19
The front end inclined surface 19i of the front outer protruding portion 19f of 1 is brought into contact with the outer inclined surface of the collet expanding projection 21c of the separator 21, and the rear surface of the front inner protruding portion 19d of each divided piece 19 1 is locked by the pull stud 17. 17b Separated from the front surface.
【００３５】更に、ドローバー１３を前進させること
で、各分割片１９１を押出し、これらの後外側突出部１
９ｅ外周面を台座２０の後部内周面に嵌合支持させ、各
分割片１９１の前外側突出部１９ｆ外周面を台座２０の
大内径部２０ｂの傾斜した後傾斜面を滑らせ、スプリン
グ１９ｇのばね力とセパレータ２１の拡開突起２１ｃの
外側傾斜面による各分割片１９１前端部の拡開とによっ
て、これらを前川が開くように傾斜させる。ドローバー
１３が前進を続け、図３に示すように、ドローバー１３
の前端面がコネクションロッド２５前端の大外径部２５
ｃを介してプルスタット１７の係止部１７ｂ後端面に当
接し、コレット１９の各分割片１９１の前外側突出部１
９ｆ外周面が台座２０の大内径部２０ｂに当接し、各分
割片１９１の前内側突出部１９ｄ内面がプルスタット１
７の係止部１７ｂ外側に離間したアンクランプ状態にな
る。Furthermore, by advancing the drawbar 13, the respective segments 19 1 extruded, outer protrusions 1 After these
The 9e outer peripheral surface is fitted and supported on the rear inner peripheral surface of the base 20, a front outer protrusion 19f outer peripheral surface of the respective segments 19 1 slipped inclined surface was inclined in the large inner diameter portion 20b of the pedestal 20, Sprint < br /> by the expansion of the respective segments 19 1 front end by the outer inclined surface of the expansion projection 21c of the spring force of the grayed 19g and the separator 21, it is inclined so that they Maekawa open. The drawbar 13 continues to move forward, and as shown in FIG.
Front end surface of the connection rod 25 is the large outer diameter portion 25 of the front end
c abuts the engaging portion 17b rear end surface of Purusutatto 17 through the front outer protrusion 1 of the divided pieces 19 1 collet 19
9f outer peripheral surface is brought into contact with the large-diameter portion 20b of the base 20, front inner protrusion 19d inner surfaces of the split pieces 19 1 Purusutatto 1
7 is in an unclamped state in which it is separated to the outside of the locking portion 17b of No. 7.
【００３６】アンクランプ状態またはその少し前に、前
記流体供給手段の動作によって流体供給通路２４に空気
を圧送し、図５の（Ｂ）に示すように、ドローバー１３
に設けた半径方向孔２８とスリーブ１８の内面に形成し
た環状溝３１とが連通するので、前記空気の一部が後部
空気通路３２を経てスリーブ１８の前端部内および台座
２０に入り、スピンドル１１の前端大径部１１ａに形成
した前部空気通路３５に達する。In the unclamped state or shortly before that, air is forced into the fluid supply passage 24 by the operation of the fluid supply means, and as shown in FIG.
Since the radial hole 28 provided in the sleeve 18 and the annular groove 31 formed in the inner surface of the sleeve 18 communicate with each other, a part of the air enters the front end portion of the sleeve 18 and the pedestal 20 through the rear air passage 32, and the spindle 11 of the spindle 11 moves. It reaches the front air passage 35 formed in the front end large diameter portion 11a.
【００３７】ドローバー１３がさらに前進を続けること
で、前記ロッド２５の大外径部２５ｃを介してプルスタ
ッド１７を押し、工具ホルダ１６の前記フランジ１６ａ
の後端面が前進して、スピンドル１１の前端面から離間
し、前部空気通路３５の前端から空気を吹出し、前記フ
ランジ１６ａおよびスピンドル１１の前端面に付着して
いた切り粉やごみを除去して清掃する。As the drawbar 13 continues to move forward, the pull stud 17 is pushed through the large outer diameter portion 25c of the rod 25, and the flange 16a of the tool holder 16 is pushed.
The rear end surface in front advances, spaced from the front end surface of the spindle 11, blowing air from the front end of the front air passage 35, remove chips and dust adhering to the front end surface of the flange 16a and the spindle 11 And clean it.
【００３８】続いて、工具自動交換装置を動作させ、工
具ホルダ１６の前記フランジ１６ａを把持して、工具ホ
ルダ１６をスピンドル１１の前側に引抜くことで、工具
ホルダ１６のテーパシャンク１６ｂの外周面とスピンド
ル１１の前端部に形成したテーパ孔１１ｃの周面との間
に隙間ができるので、台座２０内の空気が前記隙間を通
ってスピンドル１１の前端から外側に吹出し、前記テー
パシャンク１６ｂの外周面およびテーパ孔１１ｃの周面
を清掃する。Subsequently, the automatic tool changer is operated to grip the flange 16a of the tool holder 16 and pull out the tool holder 16 to the front side of the spindle 11, whereby the outer peripheral surface of the taper shank 16b of the tool holder 16 is removed. And a peripheral surface of the tapered hole 11c formed at the front end portion of the spindle 11, a gap is formed between the pedestal 20 and the air, and the air inside the pedestal 20 is blown out from the front end of the spindle 11 through the gap to the outer periphery of the tapered shank 16b. The surface and the peripheral surface of the tapered hole 11c are cleaned.
【００３９】なお、ドローバー１３の前進によって、図
５の（Ｃ）に示すように、ドローバー１３の半径方向孔
２８とスリーブ１８に設けた環状溝３１との連通が遮断
され、空気の吹出しが停止する。また、流体供給通路２
４に圧送した空気の他の一部は、コネクショッロッド２
５の流体供給孔２７およびプルスタッド１７の後面に開
口する切削液供給路３６に送り、工具ホルダ１６の前端
部または工具１５の前端から放出するので、切削液供給
路３６内の清掃もできる。By the forward movement of the draw bar 13, as shown in FIG. 5C, the radial hole 28 of the draw bar 13 and the annular groove 31 provided in the sleeve 18 are disconnected from each other, and the blowing of air is stopped. To do. Also, the fluid supply passage 2
The other part of the air pumped to 4 is connected to the connection rod 2
5 is supplied to the cutting fluid supply passage 36 opened on the rear surface of the fluid supply hole 27 and the pull stud 17 and discharged from the front end portion of the tool holder 16 or the front end of the tool 15, so that the inside of the cutting fluid supply passage 36 can be cleaned.
【００４０】工具自動交換装置による前記引抜きを継続
することで、工具ホルダ１６のテーパシャンク１６ｂお
よびプルスタッド１７をスピンドル１１外に抜出し、工
作機械のマガジンに工具ホルダ１６などを戻し、他の工
具ホルダをスピンドル１１に装着するが、この間流体供
給通路２４に空気を圧送し続け、他の工具ホルダの装着
後に空気の圧送を停止し、以後前述した動作を繰返す。By continuing the pulling out by the automatic tool changing device, the taper shank 16b of the tool holder 16 and the pull stud 17 are pulled out of the spindle 11, the tool holder 16 and the like are returned to the magazine of the machine tool, and other tool holders are returned. Is mounted on the spindle 11, but air is continuously pumped to the fluid supply passage 24 during this time, and after pumping of another tool holder, the pumping of air is stopped, and thereafter the above-described operation is repeated.
【００４１】この発明において、前記実施形態では、工
具ホルダのテーパシャンク後端から突出するプルスタッ
ドに係合する引込み機構に増力機構を設けたが、この増
力機構をなくした従来公知の引込み機構を用い、構成を
簡単にしてもよい。この発明において、工具ホルダは、
出願人が先に特願平６−２２６６８５号として平成６年
９月２１日に出願したものと同様に、前部空気通路をス
ピンドルの前端側が外周に位置し、後端がテーパ孔の後
方近くの内周面に開口する傾斜孔にしたり、またスピン
ドルの前端内周部に空気溜め凹部を形成し、この凹部に
前部空気通路の前端を開口させてもよい。この発明にお
いて、前記実施形態では、工具ホルダの把持用フランジ
の後端面をスピンドルの前端面に当接させたが、前記フ
ランジの後端面とスピンドルの前端面との間に僅かな隙
間を設けてスピンドルのテーパ孔の周面に工具ホルダの
テーパシャンクを着脱可能に係合支持させてもよく、こ
のようにすると、ドローバーの半径方向孔にスピンドル
のスリーブ内周面に形成した環状溝が接続すると、ドロ
ーバーに設けた流体供給通路から圧送した空気を、前記
半径方向孔、環状溝、スリーブに設けた後部空気通路、
スリーブの前部内および台座内を経て、前部空気通路の
前端からドローバーの前端面と工具ホルダの把持用フラ
ンジの後端面との間から吹出すことが、前記工具ホルダ
を前側に押出す以前にできる。In the present invention, in the above-described embodiment, the force increasing mechanism is provided in the retracting mechanism that engages the pull stud protruding from the rear end of the taper shank of the tool holder. It may be used to simplify the configuration. In the present invention, the tool holder is
Similar to what the applicant previously filed as Japanese Patent Application No. 6-226685 on September 21, 1994, the front air passage has the front end side of the spindle located on the outer periphery and the rear end near the rear of the tapered hole. It is also possible to form an inclined hole that opens on the inner peripheral surface of the above, or to form an air reservoir concave portion on the inner peripheral portion of the front end of the spindle, and to open the front end of the front air passage in this concave portion. In the present invention, in the above-described embodiment, the rear end surface of the gripping flange of the tool holder is brought into contact with the front end surface of the spindle. However, a slight gap is provided between the rear end surface of the flange and the front end surface of the spindle. The taper shank of the tool holder may be detachably engaged and supported on the peripheral surface of the taper hole of the spindle. In this case, the annular groove formed on the inner peripheral surface of the spindle sleeve is connected to the radial hole of the drawbar. A rear air passage provided in the radial hole, the annular groove, and the sleeve, the air being pumped from the fluid supply passage provided in the drawbar,
Before the push-out of the tool holder to the front side, the air can be blown from the front end of the front air passage through the front part of the sleeve and the pedestal to between the front end face of the draw bar and the rear end face of the gripping flange of the tool holder. it can.
【００４２】[0042]
【発明の効果】以上説明したように、請求項１の発明に
係るスピンドルの切削液、空気通路は、ドローバーの前
部に流体供給通路に連通しかつドローバーの外周面に開
口する半径方向孔を形成し、スリーブに該スリーブの軸
方向に延在する後部軸方向孔を形成し、この後部軸方向
孔の後端部はドローバーが前進動作して工具ホルダがア
ンクランプされた時に半径方向孔に接続されるとともに
ドローバーが後退動作して工具ホルダがクランプされた
時に半径方向孔との連通が遮断され、かつ後部軸方向孔
の前端をスリーブの前部内に開口させることで後部空気
通路が形成され、スピンドルの前端部に前部軸方向孔を
形成し、前部軸方向孔の後端部をテーパ孔の後側に近接
させて開口させ、前部軸方向孔の前端部が前記スピンド
ル前端面のテーパシャンク前側に連なる把持用フランジ
後端面に対応して開口することで前部空気通路が形成さ
れ、ドローバーが前進されることにより後部軸方向孔が
半径方向孔に連通されて流体供給通路が形成された後、
さらにドローバーが前進されることによりスピンドルの
後端面が把持用フランジの後端面から離間された時に流
体供給通路から圧送した空気を前部空気通路から把持用
フランジ後端面に吹出し、続いて工具ホルダをスピンド
ルから引抜くことで、流体供給通路からスピンドルの前
端部内に圧送された空気をテーパ孔とテーパシャンクと
の間にできる隙間を通してスピンドルの前端から外側へ
吹出すようにし、さらにドローバーの前部にコネクショ
ンロッドの後部を前後方向に摺動可能に嵌合し、コネク
ションロッドの前端面がプルスタッドの後端面に常に当
接されるようにスプリングで付勢し、コネクションロッ
ドの後端を流体供給通路に連通するとともにコネクショ
ンロッドの前端はプルスタッドを通して工具ホルダ内に
連通するように構成したので、次の効果がある。As described above, the cutting fluid and the air passage of the spindle according to the invention of claim 1 have a radial hole communicating with the fluid supply passage at the front portion of the drawbar and opening to the outer peripheral surface of the drawbar. And forming a rear axial hole in the sleeve extending in the axial direction of the sleeve, the rear end of the rear axial hole forming a radial hole when the drawbar is advanced and the tool holder is unclamped. When connected and the drawbar retracts and the tool holder is clamped, communication with the radial bore is blocked and a rear air passage is created by opening the front end of the rear axial bore into the front of the sleeve. , A front axial hole is formed in the front end of the spindle, and the rear end of the front axial hole is opened close to the rear side of the tapered hole, and the front end of the front axial hole is the front end surface of the spindle. Taper Front air passage is formed by an opening in correspondence with the gripping flange rear end face leading to Yanku front, the rear axial bore by Rukoto drawbar is advanced
After the fluid supply passage is formed by communicating with the radial hole,
When the drawbar is further advanced, the spindle
When the rear end face is separated from the rear end face of the gripping flange, the air pumped from the fluid supply passage is blown out from the front air passage to the rear end face of the gripping flange, and then the tool holder is pulled out from the spindle. The air sent from the fluid supply passage into the front end of the spindle is passed from the front end of the spindle to the outside through the gap formed between the taper hole and the taper shank .
To blow Suyo, further connectionless to the front of the drawbar
The rear part of the connecting rod so that it can slide in the front-back direction, and
The front end face of the rod always contacts the rear end face of the pull stud.
Use a spring to urge the connection lock
Connect the rear end of the
The front end of the rod through the pull stud and into the tool holder.
Since it is configured to communicate , the following effects are obtained.
【００４３】すなわち、ドローバーの前進によってドロ
ーバーに形成した半径方向孔がスリーブに設けた後部空
気通路に接続することで、ドローバーに形成した流体供
給通路から圧送した空気を、前記半径方向孔、後部空気
通路、スリーブの前部内、スピンドルの前端部に設けた
前部空気通路を経てスピンドルの前端面から吹出し、こ
の前端面とスピンドルの前端部に装着した工具ホルダの
把持用フランジの後端部などとを清掃でき、続いて工具
自動交換装置を動作させ、前記フランジを把持して工具
ホルダをスピンドルから引抜くことで、スピンドルの前
端部内の空気を、スピンドルの前端に形成したテーパ孔
とこれに嵌合した工具ホルダのテーパシャンクとの間か
ら前方に吹出し、前記シャンクの外側面などを清掃で
き、工具ホルダの後部およびスピンドルの前端面への切
り粉やごみの付着をなくし、清掃が確実にできる。ま
た、スリーブに形成した後部空気通路とスピンドルに形
成した前部空気通路とに分けて、これらに後部軸方向孔
と前部軸方向孔とを形成したので、これらの軸方向孔
は、図１に示す従来のようにスピンドルのみに空気通路
を構成する軸方向孔を形成するのに比べて、その長さを
著しく短くすることができ、孔加工が容易にできる。ま
た、アンクランプ時、スピンドルに装着されている工具
ホルダの内部と流体供給通路との間はドローバーの前部
に摺動可能に嵌合したコネクションロッドによりプルス
タッドを介して連通されているため、流体供給通路から
の空気を工具ホルダ内に圧送することにより、プルスタ
ッドおよび工具ホルダの切削液供給路内を清掃すること
ができる。 [0043] In other words, the mud by the advance of the drawbar
By connecting the radial hole formed in the bar to the rear air passage provided in the sleeve, the air pumped from the fluid supply passage formed in the draw bar is supplied to the radial hole, the rear air passage, the front part of the sleeve, and the spindle. It blows out from the front end face of the spindle through the front air passage provided at the front end, and this front end face and the rear end of the gripping flange of the tool holder attached to the front end of the spindle can be cleaned, and then automatic tool exchange By operating the device and grasping the flange and pulling out the tool holder from the spindle, the air in the front end of the spindle is separated between the taper hole formed at the front end of the spindle and the taper shank of the tool holder fitted to this. Blows forward from the gap to clean the outer surface of the shank, etc., and prevents chips and dust from adhering to the rear part of the tool holder and the front end surface of the spindle. Comb, cleaning can be reliably. In addition, the rear air passage formed in the sleeve and the spindle are shaped.
Divided into a front air passage form, since these are formed and a rear axial bore and the front axial bore, these axial holes, the air passage only to the spindle as in the prior art are shown in FIG. 1 The length of the hole can be significantly shortened as compared with the case of forming the axial hole that constitutes the hole, and the hole can be easily processed. In addition, the tool installed on the spindle during unclamping
Between the inside of the holder and the fluid supply passage, the front part of the drawbar
The connection rod slidably fitted to the
Since it is connected via the tod,
By pushing the air of the
Cleaning the inside of the cutting fluid supply path of the head and tool holder
You can
【００４４】請求項２の発明は、請求項１に記載したス
ピンドルの切削液、空気通路において、前記スリーブの
内周面に前後方向幅がある程度広い環状溝を形成し、こ
の環状溝と前記後部軸方向孔の後端部とを外側半径方向
孔によって接続し、前記環状溝が前記ドローバーの前進
動作によって該ドローバーに形成した半径方向孔に接続
されるようにしたので、前記環状溝の前後方向幅がある
程度広いことで、ドローバーの流体供給通路から半径方
向孔を経て後部空気通路に空気を供給する量を充分に確
保できる。According to a second aspect of the present invention, in the cutting fluid and air passage of the first aspect, an annular groove having a certain width in the front-rear direction is formed on the inner peripheral surface of the sleeve, and the annular groove and the rear portion are formed. Since the rear end of the axial hole is connected by the outer radial hole, and the annular groove is connected to the radial hole formed in the drawbar by the forward movement of the drawbar, the front-rear direction of the annular groove. With a certain width, it is possible to secure a sufficient amount of air to be supplied from the fluid supply passage of the drawbar through the radial holes to the rear air passage.
【図１】従来のスピンドルの切削液、空気通路を示した
要部の縦断面図。FIG. 1 is a longitudinal sectional view of a main part showing a cutting fluid and an air passage of a conventional spindle.
【図２】この発明の一実施形態に係るスピンドルの切削
液、空気通路を示した切削液供給状態の縦断面図。FIG. 2 is a vertical cross-sectional view of a cutting liquid supply state showing a cutting liquid and an air passage of a spindle according to an embodiment of the present invention.
【図３】図１に示したスピンドルの切削液、空気通路の
圧縮空気供給状態の縦断面図。FIG. 3 is a vertical cross-sectional view showing a state in which cutting fluid of the spindle shown in FIG. 1 and compressed air in an air passage are supplied.
【図４】図１に示したスピンドルのコレット、台座およ
びセパレータの分解斜視図。4 is an exploded perspective view of a collet, a pedestal, and a separator of the spindle shown in FIG.
【図５】（Ａ），（Ｂ），（Ｃ）はそれぞれ、図１に示
したスピンドルの切削液、空気通路の切替え動作説明用
の部分縦断面図。5A, 5B, and 5C are partial vertical cross-sectional views for explaining the switching operation of the cutting fluid and the air passage of the spindle shown in FIG. 1, respectively.
１１ スピドル １１ａ 大外径部 １１ｂ テーバ孔 １２ 貫通孔 １３ ドローバー １４ スピンドルヘッド １５ 工具 １６ 工具ホルダ １６ａ 把持用フランジ １６ｂ テーパシャンク １７ プルスタッド １８ スリーブ １９ コレット ２０ 台座 ２１ セパレータ ２２ 増力機構 ２３ 環状コイルばね ２４ 流体供給通路 ２５ コネクションロッド ２６ スプリング ２７ 流体供給孔 ２８ 半径方向孔 ２９ 後部軸方向孔 ３０ 外側半径方向孔 ３１ 環状溝 ３２ 後部空気通路 ３３ 前部軸方向孔 ３４ 短い半径方向孔 ３５ 前部空気通路 ３６ 切削液供給路 11 spiders 11a Large outer diameter part 11b Taber hole 12 through holes 13 Drawbar 14 Spindle head 15 tools 16 tool holder 16a Flange for gripping 16b taper shank 17 Pull Stud 18 sleeves 19 collets 20 pedestals 21 Separator 22 Booster mechanism 23 Annular coil spring 24 Fluid supply passage 25 connection rod 26 spring 27 Fluid supply hole 28 Radial hole 29 Rear axial hole 30 Outer radial hole 31 annular groove 32 Rear air passage 33 Front axial hole 34 Short radial hole 35 front air passage 36 Cutting fluid supply path
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) B23Q 11/00 B23Q 11/10 ─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. 7 , DB name) B23Q 11/00 B23Q 11/10
Claims (2)
ルダのテーパシャンクが嵌合するテーパ孔を形成し、前
記スピンドルの前部内周面にはスリーブを軸方向に沿っ
て嵌合固定し、前記スピンドルに同心に形成した貫通孔
及び前記スリーブにドローバーを進退可能に嵌挿し、前
記ドローバーの進退動作によって前記テーパシャンクの
後端から突出するプルスタッドに係脱可能に係合する引
込み機構を前記スピンドル内に設け、前記ドローバーに
は切削液と空気とを切替えて圧送する流体供給通路を軸
方向に沿って形成し、前記工具ホルダの前記スピンドル
への装着によって前記流体供給通路から前記プルスタッ
ドを経て工具ホルダまたは該工具ホルダに装着した工具
から工作物の加工部に切削液を供給するようにしたスピ
ンドルの切削液、空気通路であって、 前記ドローバーの前部に前記流体供給通路に連通しかつ
ドローバーの外周面に開口する半径方向孔を形成し、前
記スリーブに該スリーブの軸方向に延在する後部軸方向
孔を形成し、前記後部軸方向孔の後端部は前記ドローバ
ーが前進動作して前記工具ホルダがアンクランプされた
時に前記半径方向孔に接続されるとともに前記ドローバ
ーが後退動作して前記工具ホルダがクランプされた時に
前記半径方向孔との連通が遮断され、かつ前記後部軸方
向孔の前端を前記スリーブの前部内に開口させることで
後部空気通路が形成され、前記スピンドルの前端部に前
部軸方向孔を形成し、前記前部軸方向孔の後端部を前記
テーパ孔の後側に近接させて開口させ、前記前部軸方向
孔の前端部が前記スピンドル前端面の前記テーパシャン
ク前側に連なる把持用フランジ後端面に対応して開口す
ることで前部空気通路が形成され、前記ドローバーが前
進されることにより前記後部軸方向孔が前記半径方向孔
に連通されて前記流体供給通路が形成された後、さらに
前記ドローバーが前進されることにより前記スピンドル
の後端面が前記把持用フランジの後端面から離間された
時に前記流体供給通路から圧送した空気を前記前部空気
通路から把持用フランジ後端面に吹出し、続いて工具ホ
ルダをスピンドルから引抜くことで、前記流体供給通路
から前記スピンドルの前端部内に圧送された空気を前記
テーパ孔とテーパシャンクとの間にできる隙間を通して
前記スピンドルの前端から外側へ吹出すようにし、さら
に前記ドローバーの前部にコネクションロッドの 後部を
前後方向に摺動可能に嵌合し、前記コネクションロッド
の前端面が前記プルスタッドの後端面に常に当接される
ようにスプリングで付勢し、前記コネクションロッドの
後端は前記流体供給通路に連通されるとともに前記コネ
クションロッドの前端はプルスタッドを通して工具ホル
ダ内に連通されるように構成したことを特徴とするスピ
ンドルの切削液、空気通路。1. A taper hole into which a taper shank of a tool holder is fitted is formed at a front end portion of a spindle of a machine tool, and a sleeve is fitted and fixed on an inner peripheral surface of a front portion of the spindle along an axial direction. A drawbar is inserted into the through hole formed concentrically in the spindle and the sleeve so as to be able to advance and retreat, and a retracting mechanism that engages and disengages with a pull stud protruding from the rear end of the tapered shank by the forward and backward movement of the drawbar is provided in the spindle. A fluid supply passage for switching between cutting fluid and air is formed in the draw bar along the axial direction, and is attached to the spindle of the tool holder from the fluid supply passage through the pull stud. Cutting fluid from a tool holder or a tool attached to the tool holder to the machining part of the workpiece An air passage, wherein a radial hole communicating with the fluid supply passage and opening to an outer peripheral surface of the draw bar is formed in a front portion of the draw bar, and a rear axial hole extending in an axial direction of the sleeve is formed in the sleeve. And the rear end portion of the rear axial hole is connected to the radial hole when the draw bar moves forward and the tool holder is unclamped, and the draw bar moves backward to move the tool holder. When clamped, communication with the radial hole is blocked, and a rear air passage is formed by opening the front end of the rear axial hole into the front portion of the sleeve, and a front shaft is formed at the front end of the spindle. Direction hole is formed, and the rear end of the front axial hole is opened close to the rear side of the taper hole, and the front end of the front axial hole has the tapered shank of the spindle front end surface. Front air passage is formed by an opening in correspondence with the gripping flange rear surface continuous with the click front, said rear axial bore by Rukoto the drawbar is advanced said radial bore
And the fluid supply passage is formed by being communicated with
When the drawbar is advanced, the spindle
The rear end face of the gripping flange is separated from the rear end face of the gripping flange.
Sometimes blowing air were pumped from the fluid supply passage gripping flange rear surface from the front air passage, followed by withdrawal of the tool holder from the spindle, the fluid supply passage
Through a gap between the front end the <br/> tapered hole and the tapered shank pumping air into the spindle from
The outlet Suyo outward from the front end of the spindle, further
The rear part of the connection rod on the front part of the drawbar.
The connection rod is fitted so that it can slide in the front-back direction.
Front end face of the pull stud is always brought into contact with the rear end face of the pull stud.
So that the connection rod
The rear end is connected to the fluid supply passage and is connected to the connector.
Insert the pull stud through the front end of the
The cutting fluid and air passage of the spindle, which are configured to communicate with the inside of the cylinder .
る程度広い環状溝を形成し、この環状溝と前記後部軸方
向孔の後端部とを外側半径方向孔によって接続し、前記
環状溝が前記ドローバーの前進動作によって該ドローバ
ーに形成した半径方向孔に接続されるようにしたことを
特徴とする請求項１に記載したスピンドルの切削液、空
気通路。2. An annular groove having a certain width in the front-rear direction is formed on the inner peripheral surface of the sleeve, and the annular groove and the rear end of the rear axial hole are connected by an outer radial hole. 2. The cutting fluid and air passages for the spindle according to claim 1, wherein the drawing bar is connected to a radial hole formed in the draw bar by a forward movement of the draw bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19727897A JP3402572B2 (en) | 1997-07-23 | 1997-07-23 | Spindle cutting fluid, air passage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19727897A JP3402572B2 (en) | 1997-07-23 | 1997-07-23 | Spindle cutting fluid, air passage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1133874A JPH1133874A (en) | 1999-02-09 |
| JP3402572B2 true JP3402572B2 (en) | 2003-05-06 |
Family
ID=16371812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19727897A Expired - Lifetime JP3402572B2 (en) | 1997-07-23 | 1997-07-23 | Spindle cutting fluid, air passage |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3402572B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101143018B1 (en) * | 2011-04-22 | 2012-05-08 | (주) 카스윈 | Air-cleaning apparatus for spindle |
| JP2016215343A (en) | 2015-05-22 | 2016-12-22 | ファナック株式会社 | Machine tool having cleaning means |
| TWI650198B (en) * | 2017-09-26 | 2019-02-11 | 財團法人精密機械研究發展中心 | Low temperature cutter |
| JP6715414B6 (en) * | 2017-10-16 | 2020-07-29 | Ｊｆｐ株式会社 | Wet punching device |
| CN112171360B (en) * | 2020-09-17 | 2022-09-06 | 苏州市博力精密塑胶模具有限公司 | Numerical control milling machine |
| CN112719484A (en) * | 2021-01-10 | 2021-04-30 | 科德数控股份有限公司 | Universal type electric machining device capable of automatically replacing carbon rods |
| WO2023053471A1 (en) * | 2021-09-28 | 2023-04-06 | 株式会社ジェイテクト | Spindle device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3002623U (en) | 1994-03-31 | 1994-09-27 | 株式会社牧野フライス製作所 | Machine tool spindle device |
-
1997
- 1997-07-23 JP JP19727897A patent/JP3402572B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3002623U (en) | 1994-03-31 | 1994-09-27 | 株式会社牧野フライス製作所 | Machine tool spindle device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH1133874A (en) | 1999-02-09 |
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