JPH0325852Y2 - - Google Patents
Info
- Publication number
- JPH0325852Y2 JPH0325852Y2 JP1985078984U JP7898485U JPH0325852Y2 JP H0325852 Y2 JPH0325852 Y2 JP H0325852Y2 JP 1985078984 U JP1985078984 U JP 1985078984U JP 7898485 U JP7898485 U JP 7898485U JP H0325852 Y2 JPH0325852 Y2 JP H0325852Y2
- Authority
- JP
- Japan
- Prior art keywords
- tool
- holder
- hole
- collet
- taper
- 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
Links
- 239000012530 fluid Substances 0.000 description 11
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Jigs For Machine Tools (AREA)
- Gripping On Spindles (AREA)
Description
【考案の詳細な説明】
産業上の利用分野
本考案はテーパの異なる2種類以上の工具また
は工具ホルダを随時装着できるようになした主軸
を有する工作機械に関する。[Detailed Description of the Invention] Industrial Application Field The present invention relates to a machine tool having a spindle to which two or more types of tools or tool holders with different tapers can be attached at any time.
従来技術
従来一般にマシニングセンタなどにおいては工
具または工具ホルダのシヤンクのテーパはナシヨ
ナルテーパ(以後NTという。)50が使用され
ており殆んど問題がなかつたが、近年大形機の需
要が多くなりこれに伴い工具が大形化、重切削化
してNT50では保持能力の限界を越え耐えられ
なくなつてきており、NT60の工具を採用する
場合が多くなつた。Conventional technology Conventionally, a national taper (hereinafter referred to as NT) of 50 mm has been used for the taper of the shank of a tool or tool holder in machining centers, etc., with almost no problems, but in recent years there has been an increase in demand for large machines. As a result, tools have become larger and require heavy cutting, and NT50 tools have exceeded their holding capacity and are no longer able to withstand them, and NT60 tools are now being used in many cases.
考案が解決しようとする問題点
然しNT60の工具は色々の点で高価となるた
めにいたずらにNT60の工具とすることは誠に
不経済である。Problems to be solved by the invention However, since NT60 tools are expensive in various respects, it is truly uneconomical to use NT60 tools unnecessarily.
問題点を解決するための手段
従つて不経済とならないように主軸2,42に
は使用工具の最大のテーパが装着できるテーパ穴
2a,42aを設けておき、このテーパ穴に嵌合
するテーパを有し他の工具の小さなテーパの装着
できるテーパ穴30bを有して主軸2,42及び
装着工具の回り止め位置決めのキー溝及びキーを
有するフランジ付ホルダ30,T50を必要によ
り自動交換で嵌着固定可能とし、このホルダを主
軸2,42に締付する第1手段を主軸に設け、前
記フランジ付ホルダに装着した工具ホルダを嵌着
固定する第2手段を主軸に設け、第1手段、第2
手段を独立に作用する作動手段を設けたものであ
る。Measures to Solve the Problem Therefore, in order to avoid waste, the main spindles 2 and 42 are provided with taper holes 2a and 42a in which the largest taper of the tool used can be fitted, and a taper that fits into these taper holes is provided. It has a tapered hole 30b into which a small taper of another tool can be attached, and a flange-equipped holder 30, T50, which has a key groove and key for positioning the main spindle 2, 42 and the installed tool to prevent rotation, can be fitted by automatic exchange if necessary. A first means for fixing the tool holder to the main shaft 2, 42 is provided on the main shaft, a second means for fitting and fixing the tool holder attached to the flanged holder is provided on the main shaft, 2
It is provided with actuating means that act independently of the means.
以下本考案の実施例を図面にもとづき説明す
る。 Embodiments of the present invention will be described below based on the drawings.
実施例 1
第1、第2、第3、第4図において、例えばマ
シニングセンタの主軸頭1に軸受によつて回転可
能に軸承された主軸2は中心に段付貫通穴が穿設
されている。主軸先端面には工具の回り止めと位
置決めのキー3が植設され、貫通穴はNT60の
工具または工具ホルダのテーパシヤンクの嵌着す
るテーパ穴2aにつづくストレート穴2bの途中
にNT60工具引上用のコレツト端が落ち込む大
径の溝2cが形成され、段部2dより後方に大径
の穴2eとなつている。溝2cより後側のストレ
ート穴2bにはNT60の工具のプルスタツドを
引き上げる3つ割の大コレツト4が3等分位置で
ストレート穴2bの内周に沿つて配置されてい
る。この大コレツト4の分割した間に大コレツト
4より長さが短かく基端を揃えたNT60工具用
抜きコレツト5が3個配置されている。大コレツ
ト4の頂部はその外側がストレート穴2bと接触
中は顎4aがNT60工具のプルスタツドと係合
しており、前進して溝2cに落ち込んだときコレ
ツトが開くようになつている。そして大コレツト
4及び抜きコレツト5のそれぞれの基部内側に穴
2eに挿通された段付で中空のNT60用ドロー
バ6の係合頭部7の顎部7aと球状頭面7bとに
しつくり係合するそれぞれの切欠4b,5aが削
設されており、またそれぞれの基端外周にはそれ
ぞれ溝4c,5bが削設されていて、リング状ば
ね8が掛けられていて大コレツト4及び抜きコレ
ツト5を開く方向に付勢している。貫通穴のスト
レート穴2eには段部に当接するばね受けカラー
9とドローバ6の後端フランジとの間にNT60
工具引上げ用の複数枚の皿ばね10が介挿されて
いてドローバ6を引上げる方向に付勢している。
抜きコレツト5の先端部のストレート穴には先端
側にコレツト穴5aにNT50工具のプルスタツ
ドを把持する3つ割の第2小コレツト11が挿入
されコレツト穴5aにコレツト頂部11aが位置
するときは閉口して後述の引上げピン37のプル
スタツド36を把持し、前進して抜きコレツト5
より外れたときは開いてプルスタツドを開放す
る。第2小コレツト11の基部にはNT60工具
用ドローバ6の中空部を貫通したNT50工具用
ドローバ12の頭部13の顎部13aと球状頂面
13bに隙間なく係合する溝11bを有し後端に
は外周に溝11cが削設されていてリング状ばね
14が掛けられ第2小コレツト11は常に開く方
向に付勢されている。NT60工具用ドローバ6
の段部6aには3等分位置にばね受けカラー9端
面と当接する3本の同寸の支え27を介してばね
受けカラー15が介挿されていて、ドローバ12
の後端のねじ部で螺着されたばね受け座16との
間に複数枚の皿ばね17が介挿されておりドロー
バ12を引上げる方向に付勢している。そして皿
ばね10の力は皿ばね17の力よりも強力につく
られている。NT60工具用ドローバ6の後端に
は凹球面座のリング18が同心に締着され、この
リング18に接する球面端を有する管状棒19が
軸方向に摺動可能に支持され、その中心にNT5
0工具用ドローバ12端に当接する凹球状面端を
有する押圧棒20が摺動可能に挿通されている。
この管状棒19と同一軸心に大シリンダ21が設
けられており、これに嵌装されたピストン22の
ピストンロツド23端が管状棒19端面と隙間を
おいて対峙している。このピストンロツド23は
急激に前進されてハンマ作用をする。更に大シリ
ンダ21と同心にその裏側に小シリンダ24が取
付けられており、これに嵌装するピストン25の
ピストンロツド26がピストンロツド23の貫通
穴23a内に延びて押圧棒20端と隙間をあけて
対峙している。このピストンロツド26は急激に
前進されてハンマ作用をする。そしてそれぞれの
ピストンロツドに設けたドツグによりリミツトス
イツチを作動させて動作の確認信号が出力され
る。Embodiment 1 In FIGS. 1, 2, 3, and 4, a main shaft 2 rotatably supported by a bearing on a main spindle head 1 of a machining center, for example, has a stepped through hole bored in its center. A key 3 for locking and positioning the tool is planted on the tip of the spindle, and a through hole is used for lifting the NT60 tool in the middle of the straight hole 2b that follows the taper hole 2a into which the NT60 tool or taper shank of the tool holder fits. A large-diameter groove 2c into which the collet end falls is formed, and a large-diameter hole 2e is formed behind the step 2d. In the straight hole 2b on the rear side of the groove 2c, a three-piece large collet 4 for pulling up the pull stud of an NT60 tool is arranged along the inner periphery of the straight hole 2b at three equal positions. Three NT60 tool punching collets 5, which are shorter in length than the large collet 4 and whose base ends are aligned, are arranged between the divided large collets 4. While the outside of the top of the large collet 4 is in contact with the straight hole 2b, the jaws 4a engage with the pull stud of the NT60 tool, so that the collet opens when it moves forward and falls into the groove 2c. Then, the jaws 7a of the engaging head 7 of the hollow drawbar 6 for NT60 with a step inserted through the hole 2e inside the base of each of the large collet 4 and the extracting collet 5 are tightly engaged with the spherical head surface 7b. Notches 4b and 5a are cut in each, and grooves 4c and 5b are cut in the outer periphery of each proximal end, and a ring-shaped spring 8 is applied to hold the large collet 4 and the extractor collet 5. It is biased in the direction of opening. In the straight hole 2e of the through hole, there is a NT60 wire between the spring receiver collar 9 that comes into contact with the step and the rear end flange of the drawbar 6.
A plurality of disc springs 10 for pulling up the tool are inserted to bias the drawbar 6 in the pulling direction.
A second small collet 11 divided into three parts for gripping the pull stud of an NT50 tool is inserted into the straight hole at the tip of the extracting collet 5 on the tip side, and is closed when the collet top 11a is located in the collet hole 5a. Then, grasp the pull stud 36 of the pull pin 37, which will be described later, and move forward to remove the extraction collet 5.
When it comes off, open it to release the pull stud. The base of the second small collet 11 has a groove 11b that penetrates the hollow part of the drawbar 6 for NT60 tools and engages the jaw 13a and spherical top surface 13b of the head 13 of the drawbar 12 for NT50 tools without a gap. A groove 11c is cut on the outer periphery of the end, and a ring-shaped spring 14 is applied so that the second small collet 11 is always biased in the opening direction. Drawbar 6 for NT60 tools
A spring receiver collar 15 is inserted into the stepped portion 6a at three equal positions via three supports 27 of the same size that come into contact with the end surface of the spring receiver collar 9.
A plurality of disc springs 17 are interposed between a spring receiving seat 16 screwed into a threaded portion at the rear end, and bias the drawbar 12 in the upward direction. The force of the disc spring 10 is made stronger than the force of the disc spring 17. A ring 18 with a concave spherical seat is concentrically fastened to the rear end of the drawbar 6 for NT60 tools, and a tubular rod 19 having a spherical end in contact with this ring 18 is supported so as to be slidable in the axial direction, and the NT5
A press rod 20 having a concave spherical end that comes into contact with the end of the drawbar 12 for the 0-tool is slidably inserted therethrough.
A large cylinder 21 is provided coaxially with the tubular rod 19, and an end of a piston rod 23 of a piston 22 fitted in the cylinder faces the end surface of the tubular rod 19 with a gap therebetween. This piston rod 23 is rapidly advanced and acts as a hammer. Furthermore, a small cylinder 24 is attached concentrically with the large cylinder 21 on the back side thereof, and a piston rod 26 of a piston 25 fitted into the small cylinder 24 extends into the through hole 23a of the piston rod 23 and faces the end of the press rod 20 with a gap. are doing. This piston rod 26 is rapidly advanced and acts as a hammer. A limit switch is actuated by a dog provided on each piston rod, and an operation confirmation signal is output.
主軸2のテーパ穴2aにNT60用工具が装着
されるときはそのプルスタツドが大コレツト4で
把持されるが、NT50用工具を装着するときは
専用ホルダ30がテーパ穴2aに装着される。専
用ホルダ30はNT60のトーパ30aと中心に
NT50のテーパ穴30bを有しフランジ30c
に主軸2端の回り止め兼位置決め用のキー3と係
合する溝30dとNT50工具の回り止め兼位置
決め用キー31が設けられており、またテーパ穴
30bにつゞく穴30f端にはねじ30eが削設
されていて、こゝに段付貫通穴32aを穿設した
NT60工具と同形のプルスタツド32が螺着さ
れている。段付貫通穴32aの大径部には第2小
コレツト11と同じ第1小コレツト33が穴内周
に配置され先端頂部が穴32a内にあるときは係
合顎部33aがテーパ穴30bに装着されたNT
50工具T50のテーパシヤンク端のプルスタツ
ドT50aの首部に係合し、第1小コレツト33
が前進されて穴30f内に落ち込んだときは開い
てプルスタツドT50aを開放する。この第1小
コレツト33の基部には第2小コレツトと同じ係
合切欠33bが削設され基端の溝にはリング状ば
ね34が掛けられていて常に開くように付勢され
ている。プルスタツド32の貫通穴32aの大径
部にはドローバ12との頭部13と同形の頭部3
5を有して第1小コレツト33の係合切欠33b
と係合し、貫通穴32aの小径部より突出した端
にはNT50の工具T50のプルスタツドT50
aと同形のプルスタツド36を有しドローバ12
の頭部13端と小さい隙間で対峙する引上げピン
37が摺動可能に挿通され止ねじ38で脱落しな
いように保持されている。 When a tool for NT60 is installed in the taper hole 2a of the spindle 2, its pull stud is held by the large collet 4, but when a tool for NT50 is installed, a special holder 30 is installed in the taper hole 2a. The dedicated holder 30 is centered with the Topa 30a of the NT60.
Flange 30c with NT50 tapered hole 30b
A groove 30d that engages with the key 3 for rotation prevention and positioning at the end of the main shaft 2 and a rotation prevention and positioning key 31 for the NT50 tool are provided at the end of the hole 30f that connects to the tapered hole 30b. 30e was cut, and a stepped through hole 32a was drilled here.
A pull stud 32 of the same shape as the NT60 tool is screwed on. A first small collet 33, which is the same as the second small collet 11, is arranged on the inner periphery of the large diameter part of the stepped through hole 32a, and when the top of the tip is in the hole 32a, the engaging jaw 33a is attached to the tapered hole 30b. NT
50 engages with the neck of the pull stud T50a at the end of the taper shank of the tool T50, and
When it is advanced and falls into the hole 30f, it opens and releases the pull stud T50a. The same engagement notch 33b as that of the second small collet is cut into the base of the first small collet 33, and a ring-shaped spring 34 is applied to the groove at the base end so as to keep it always open. The large diameter part of the through hole 32a of the pull stud 32 has a head 3 having the same shape as the head 13 of the drawbar 12.
5 and the engagement notch 33b of the first small collet 33
The pull stud T50 of the NT50 tool T50 is engaged with the end protruding from the small diameter part of the through hole 32a.
The drawbar 12 has a pull stud 36 of the same shape as a.
A pull-up pin 37 facing the end of the head 13 with a small gap is slidably inserted therethrough and is held by a set screw 38 so as not to fall off.
作 用
今専用ホルダ30は引上げピン37を保持した
まゝ特別のマガジンに収納されており、NT6
0、NT50の工具マガジンに貯蔵されている。
そして大シリンダ21の後室に圧力流体が送られ
ピストンロツド23端が管状棒19を押しドロー
バ6を介して大コレツト4を開けている。そこで
NT60工具が使用される場合、ATCによつて
主軸2のテーパ穴2aに工具が装入されると大コ
レツト4内にプルスタツドが入り込む。大シリン
ダ21の圧力流体を前室に切換えピストンロツド
23を後退させると皿ばね10の力によつてドロ
ーバ6を介して大コレツト4が引き込まれてその
頂部4dがストレート穴2bの溝2cより引き出
されNT60工具のプルスタツドを把持して工具
のテーパをテーパ穴2aに装着させる。NT60
工具を抜くには大シリンダ21の後室に圧力流体
を送り、ピストンロツド23を前進させて管状棒
19、ドローバ6を打撃して押し大コレツト4及
び、抜きコレツト5を前進させると、先ず大コレ
ツト4の頂部4dが溝2cに落ち込んでコレツト
を開いてプルスタツドを開放し、その後抜きコレ
ツト5の先端がプルスタツドの端面をついてテー
パ穴2a面での嵌合を離す。Function The special holder 30 is housed in a special magazine while holding the pull-up pin 37, and the holder 30 is housed in a special magazine.
0, stored in a NT50 tool magazine.
Pressure fluid is sent to the rear chamber of the large cylinder 21, and the end of the piston rod 23 pushes the tubular rod 19 to open the large collet 4 via the drawbar 6. Therefore
When an NT60 tool is used, when the tool is inserted into the tapered hole 2a of the spindle 2 by ATC, the pull stud enters into the large collet 4. When the pressure fluid of the large cylinder 21 is switched to the front chamber and the piston rod 23 is moved backward, the large collet 4 is drawn in via the drawbar 6 by the force of the disc spring 10, and its top 4d is pulled out from the groove 2c of the straight hole 2b. Grip the pull stud of the NT60 tool and attach the taper of the tool to the taper hole 2a. NT60
To extract the tool, pressurized fluid is sent to the rear chamber of the large cylinder 21, the piston rod 23 is advanced, and the tubular rod 19 and the drawbar 6 are struck to advance the large pushing collet 4 and the extracting collet 5. The top 4d of the collet 4 falls into the groove 2c to open the collet and release the pull stud, and then the tip of the collet 5 touches the end face of the pull stud to release the fit on the surface of the tapered hole 2a.
次に工具がNT60からNT50に変更される
場合、小シリンダ24の後室に圧力流体を送りピ
ストンロツド26を前進させ押込棒20、ドロー
バ12を介して第2小コレツト11を、また大シ
リンダ21の後室に圧力流体を送りピストンロツ
ド23を前進させてドローバ6を介して大コレツ
ト4を開けておく。専用ホルダ30が作業者また
は図示しない取付装置により主軸2のテーパ穴2
aに挿入されると、引上げピン37のプルスタツ
ド36が開いた第2小コレツト11内に、またプ
ルスタツド32が開いた大コレツト4内に挿し込
まれる。圧力流体を大シリンダ21の前室に切換
えピストンロツド23を後退させるとドローバ6
は皿ばね10の力により引き上げられ、コレツト
4が閉じてプルスタツド32が引き込まれ専用ホ
ルダ30のテーパが主軸2のテーパ穴2aに強く
嵌着される。次いでATCによりNT50工具が
ホルダ30のテーパ穴30bに挿入されると、小
シリンダ24の前室に圧力流体を送りピストンロ
ツド26を後退させる。ドローバ12は皿ばね1
7の力により引き上げられ第2小コレツト11を
引き込み抜き小コレツト11の頭部はコレツト5
の内周面で閉じられて引上げピン37のプルスタ
ツド36を把持して引き込むことにより、引上げ
ピン37の頭部35が第1小コレツト33を同時
に引き込んで閉じることによりNT50工具T5
0のプルスタツドT50aが把持されて引き込ま
れるため工具のテーパシヤンクはテーパ穴30b
に嵌着される。 Next, when the tool is changed from NT60 to NT50, pressurized fluid is sent to the rear chamber of the small cylinder 24 to advance the piston rod 26 and move the second small collet 11 through the push rod 20 and drawbar 12, and the large cylinder 21. Pressure fluid is sent to the rear chamber to advance the piston rod 23 and open the large collet 4 via the drawbar 6. The dedicated holder 30 is attached to the tapered hole 2 of the spindle 2 by an operator or a mounting device (not shown).
a, the pull stud 36 of the lifting pin 37 is inserted into the open second small collet 11, and the pull stud 32 is inserted into the open large collet 4. When the pressure fluid is switched to the front chamber of the large cylinder 21 and the piston rod 23 is retreated, the drawbar 6
is pulled up by the force of the disc spring 10, the collet 4 is closed, the pull stud 32 is retracted, and the taper of the dedicated holder 30 is firmly fitted into the taper hole 2a of the main shaft 2. Next, when the NT50 tool is inserted into the tapered hole 30b of the holder 30 by ATC, pressure fluid is sent to the front chamber of the small cylinder 24 and the piston rod 26 is retracted. The drawbar 12 is a disc spring 1
The head of the small collect 11 is pulled up by the force of 7 and pulled out and the second small collect 11 is pulled out.
By gripping and pulling the pull stud 36 of the pulling pin 37, the head 35 of the pulling pin 37 simultaneously pulls in and closes the first small collet 33, thereby opening the NT50 tool T5.
Since the pull stud T50a of 0 is gripped and pulled in, the taper shank of the tool is in the taper hole 30b.
is fitted into the
この工具を交換するにはシリンダ24の後室に
圧力流体を送つてピストンロツド26を急激に前
進させて押込棒20、ドローバ12を打撃しドロ
ーバ12の頭部13が引上げピン37のプルスタ
ツド36を打撃し且前進させて第2小コレツト1
1及び第1小コレツト33を前進させて開口し、
その後プルスタツドT50aを打撃してNT50
工具のテーパ部の嵌合を離しATCで交換する。 To replace this tool, pressurized fluid is sent to the rear chamber of the cylinder 24 to rapidly advance the piston rod 26 to strike the push rod 20 and drawbar 12, and the head 13 of the drawbar 12 strikes the pull stud 36 of the pull pin 37. Then move it forward and collect the second small collection 1.
1 and the first small collet 33 are advanced and opened;
After that, hit the pull stud T50a and get NT50.
Release the tapered part of the tool and replace it with ATC.
専用ホルダ30を取外すにはNT50工具を抜
いて第2小コレツト11を開口状態にして引上げ
ピン37のプルスタツド36を開放しておき、大
シリンダ21の後室に圧力流体を送りピストンロ
ツド23を急激に前進させて管状棒19端面を打
撃し、前進させてドローバ6の前進でコレツト4
が前進され開口したあとともに前進させられた抜
きコレツト5がプルスタツド32を打撃して専用
ホルダ30のテーパ嵌着面を離し人手又は交換装
置で専用ホルダ30を取外すものである。 To remove the special holder 30, pull out the NT50 tool, open the second small collet 11, release the pull stud 36 of the pull pin 37, and send pressure fluid to the rear chamber of the large cylinder 21 to suddenly move the piston rod 23. The tubular rod 19 is moved forward and the end face is struck, and the drawbar 6 is moved forward and the collect 4 is moved forward.
After the is advanced and opened, the extracted collet 5 that has been advanced hits the pull stud 32 to release the tapered fitting surface of the dedicated holder 30, and the dedicated holder 30 is removed manually or by a replacement device.
実施例 2
第5図において例えばマシニングセンタの主軸
頭に、NT60のテーパ穴42aを有する主軸4
2を回転可能に軸承したクイル41が軸方向移転
可能に支承されている。クイル41の端部には位
置決め用のカービツクカツプリング43が固着さ
れている。また位置決め部より上位置に鍔41a
が形成されその上面外周が油路を開口する油圧室
45となるように、下端外周に鍔44aを有する
クランプリング44が軸方向摺動可能に嵌装され
ている。クランプリング44の下端外側には外周
の一部に外歯40aを有する着脱リング40が旋
回可能に嵌装され、この着脱リング40は回転可
能にクイル41に設けられた図示しない流体圧シ
リンダで歯の半ピツチ回転されるようになつてお
り、以上の構造は実開昭60−11733号に示すもの
と同一である。主軸42のテーパ穴42aにつづ
く段付貫通穴が穿設されており、段付穴42bに
は先端外周を削つた薄肉部がテーパ穴42a内に
突出しストレート穴46aを有するブシユ46が
嵌着され、この穴46aに頭部47が位置するド
ローバ48が主軸の穴42cを貫通している。ス
トレート穴46a内にはコレツト49が穴46a
の内周に接して等分位置に複数個配置され、頂部
49aに工具のプルスタツドと係合する顎部を有
し基部にドローバ48の頭部47と隙間なく係合
する切欠49bを有し、後端の外溝に掛けられた
リング状ばね50で常時開く方向に付勢されてい
る。Embodiment 2 In FIG. 5, for example, a spindle 4 having an NT60 tapered hole 42a in the spindle head of a machining center is used.
A quill 41 rotatably supported on a shaft 2 is supported so as to be movable in the axial direction. A curvature cup ring 43 for positioning is fixed to the end of the quill 41. Also, the collar 41a is located above the positioning part.
A clamp ring 44 having a flange 44a on its lower end outer periphery is slidably fitted in the axial direction so that the outer periphery of its upper surface forms a hydraulic chamber 45 that opens an oil passage. A detachable ring 40 having external teeth 40a on a part of its outer periphery is rotatably fitted to the outer side of the lower end of the clamp ring 44. The above structure is the same as that shown in Utility Model Application No. 11733/1983. A stepped through hole that continues to the tapered hole 42a of the main shaft 42 is drilled, and a bushing 46 having a straight hole 46a is fitted into the stepped hole 42b, with a thin wall portion formed by cutting the outer periphery of the tip protruding into the tapered hole 42a. A drawbar 48, whose head 47 is located in the hole 46a, passes through the hole 42c of the main shaft. A collet 49 is inserted into the straight hole 46a.
A plurality of drawbars are arranged at equal intervals in contact with the inner periphery of the drawbar, and have a jaw at the top 49a that engages with the pull stud of the tool, and a notch 49b at the base that engages the head 47 of the drawbar 48 without a gap; It is always biased in the open direction by a ring-shaped spring 50 hooked on the outer groove at the rear end.
ドローバ48は穴42cにつゞく大径穴42d
に挿入した複数枚の皿ばね51によつて公知のよ
うに常時引込み方向に付勢されている。そして図
示されない流体圧シリンダの作動によつて前進す
るピストンロツドがドローバ48を打撃押圧する
ことによつてドローバ48は前進させられる。
NT60工具装着時に専用盲蓋52が取付けられ
る。盲蓋52はNT60工具のフランジ部の装入
する穴を有して主軸42の端面を覆いカービツク
カツプリング43と噛合するカービツクカツプリ
ング53を有するとともに着脱リング40の外側
を覆う円筒部52aの内周に着脱リング40の外
歯40aと噛合する内歯52bが削設され盲蓋装
着時には内歯52bに着脱リング40の外歯40
aが半ピツチ旋回されて山と山とが係合してクラ
ンプリング44により引上げられカービツクカツ
プリング43,53が噛合されるものである。主
軸に装着されるNT60用工具T60のテーパシ
ヤンクT60aはシヤンク端面より盲穴が穿設さ
れていてその奥にプルスタツドT60bが取付け
られており、主軸42に装着時にコレツト49が
係合する位置関係にある。 The drawbar 48 has a large diameter hole 42d that extends into the hole 42c.
As is well known, it is always biased in the retracting direction by a plurality of plate springs 51 inserted into the housing. The drawbar 48 is moved forward by the piston rod, which is moved forward by the operation of a hydraulic cylinder (not shown), striking and pressing the drawbar 48.
A dedicated blind cover 52 is attached when the NT60 tool is installed. The blind cover 52 has a hole into which the flange part of the NT60 tool is inserted, covers the end face of the main shaft 42, has a carbyk coupling 53 that engages with the carbyk coupler 43, and has a cylindrical part 52a that covers the outside of the detachable ring 40. Internal teeth 52b that mesh with the external teeth 40a of the removable ring 40 are cut on the inner periphery of the removable ring 40.
A is rotated half a pitch so that the crests engage and are pulled up by the clamp ring 44, and the carbyk coupling rings 43 and 53 are engaged with each other. The taper shank T60a of the NT60 tool T60, which is attached to the main shaft, has a blind hole drilled from the end surface of the shank, and a pull stud T60b is attached to the back of the hole, and the pull stud T60b is positioned in a position where the collet 49 engages when installed on the main shaft 42. .
NT50工具装着時には使用する専用ホルダ5
4は外側がNT60のテーパで穴がNT50のテ
ーパのシヤンク54aにつゞきフランジ54bと
なりその外周中央に鍔54cが突設され、主軸4
2端の回り止め位置決めキー39と係合するキー
溝及びNT50工具の回り止め位置決めキー55
を有する。そしてNT60専用盲蓋52と同形状
で内歯56bとカービツクカツプリング57を有
し中央の穴にホルダ54のフランジの鍔54cと
工具の回転を阻害しないように隙間を有して係合
しうる環状凹溝56aが形成されたNT50専用
盲蓋56が取付けられる。そしてNT50専用盲
蓋56の凹溝56aに専用ホルダ54の鍔54c
が係合した一体の状態で着脱され専用マガジンに
保管される。 Dedicated holder 5 used when installing NT50 tool
4 has a shank 54a with a taper of NT60 on the outside and a taper of NT50 with a hole forming a flange 54b with a collar 54c protruding from the center of its outer circumference, and the main shaft 4
A key groove that engages with the detent positioning key 39 at the second end and the detent positioning key 55 of the NT50 tool.
has. It has the same shape as the blind cover 52 for NT60 and has internal teeth 56b and a carbyk coupling 57, and engages with the collar 54c of the flange of the holder 54 in the center hole with a gap so as not to inhibit the rotation of the tool. A blind lid 56 exclusively for NT50 is attached which has a ring-shaped groove 56a formed therein. Then, the flange 54c of the dedicated holder 54 is inserted into the concave groove 56a of the blind cover 56 dedicated to NT50.
It is attached and detached in the engaged state and stored in a dedicated magazine.
作 用
NT50工具を主軸に装着するにはNT50専
用ホルダ54を主軸42のテーパ穴42aに装入
し主軸のキー39をキー溝に係合させる。一方
NT50専用盲蓋56は円筒部の内歯56bが着
脱リング40の外歯40aと当らないよう山と谷
を合わせて外歯40aを乗り越えて挿入し、図示
しない流体圧シリンダを作動させて着脱リング4
0を半ピツチ旋回させて着脱リング40の外歯4
0aと盲蓋56の内歯56bの山と山を係合させ
る。次いでクランプ室45に圧力流体を送りクラ
ンプリング44を後退させ着脱リング40を介し
て盲蓋56を引上げカービツクカツプリング4
3,57を噛合させる。準備が終ればATCによ
りNT50工具T50を装着すると、ドローバ4
8に作用していたピストンロツド48を後退させ
皿ばね51の力でドローバ48を引きコレツト4
9がNT50工具T50のプルスタツドT50a
を把持して引き込みホルダ54のテーパ穴に嵌着
させる。NT50工具T50を交換するにはピス
トンロツドでドローバ48を打撃前進させるとコ
レツト49が開くとともにドローバ48の頭部4
7がプルスタツドT50aを打ち専用ホルダ54
の主軸テーパ穴42aとの嵌合が離され専用ホル
ダ54が抜けフランジ部54bの鍔54cが盲蓋
56の凹溝56aでホルダ54を受け止めてドロ
ーバ48の押し出し力に抗するため、NT50工
具T50のテーパはホルダ54のテーパ穴と離れ
工具を交換することができる。Operation To attach the NT50 tool to the spindle, insert the NT50 exclusive holder 54 into the tapered hole 42a of the spindle 42 and engage the key 39 of the spindle into the keyway. on the other hand
The blind cover 56 exclusively for NT50 is inserted over the external teeth 40a of the detachable ring 40 by aligning the peaks and valleys so that the internal teeth 56b of the cylindrical portion do not touch the external teeth 40a of the detachable ring 40, and then operating the fluid pressure cylinder (not shown) to remove the detachable ring. 4
0 by half a pitch and remove the outer teeth 4 of the detachable ring 40.
The ridges of the inner teeth 56b of the blind lid 56 are engaged with the ridges of the inner teeth 56b of the blind lid 56. Next, pressurized fluid is sent to the clamp chamber 45 to move the clamp ring 44 back, and the blind lid 56 is pulled up via the detachable ring 40 to remove the clamp ring 4.
3, 57 are engaged. When the preparation is complete, ATC installs the NT50 tool T50, and the drawbar 4
The piston rod 48 that was acting on the collet 4 is moved backward, and the drawbar 48 is pulled by the force of the disc spring 51 to remove the collet 4.
9 is the pull stud T50a of the NT50 tool T50
and fit it into the tapered hole of the retractable holder 54. To replace the NT50 tool T50, move the drawbar 48 forward by striking it with the piston rod, the collet 49 will open, and the head 4 of the drawbar 48 will open.
7 hits the pull stud T50a and the dedicated holder 54
The NT50 tool T50 is disengaged from the main shaft taper hole 42a and the dedicated holder 54 comes out, and the flange 54c of the flange portion 54b receives the holder 54 in the groove 56a of the blind cover 56 and resists the extrusion force of the drawbar 48. The taper can be separated from the taper hole of the holder 54 and the tool can be replaced.
NT60工具用に換えるにはホルダ54が主軸
テーパ42aと離れた状態で着脱リング40を半
ピツチ旋回させ着脱リング40の外歯40aと盲
蓋56の内歯56aとの山と谷を合わせて盲蓋5
6、ホルダ54を取外し、代りにNT60用に盲
蓋52を同様に装着固定するものである。 To change to an NT60 tool, with the holder 54 separated from the spindle taper 42a, rotate the detachable ring 40 by half a pitch, align the peaks and valleys of the external teeth 40a of the detachable ring 40 and the internal teeth 56a of the blind cover 56, Lid 5
6. Remove the holder 54 and fix the blind cover 52 for NT60 in the same way instead.
効 果
以上詳述したように本考案はNT60とNT5
0のテーパ穴を有するホルダを主軸に嵌着する
別々に作動する締付手段によつて着脱可能に設け
たので、大形機械において重量工具に対して充分
で確実な把持力をうることができる。NT60、
NT50の両方の工具が同じ主軸で使用可能とな
り、小さな穴あけやタツピング加工から大きなフ
ライス加工に至る広範囲な複合加工に対応でき大
形マシニングセンタの市場において大きな偉力を
発揮できる効果を有する。Effects As detailed above, this invention is effective for NT60 and NT5.
A holder with a 0.0 taper hole is fitted onto the main shaft and is removably installed using separately operated tightening means, making it possible to obtain sufficient and reliable gripping force for heavy tools in large machines. . NT60,
Both NT50 tools can now be used on the same spindle, making it possible to handle a wide range of complex machining, from small drilling and tapping to large milling, making it a powerful tool in the large machining center market.
第1図は実施例第1の主軸の工具装着部の縦断
面図、第2図は工具抜き用シリンダ部の縦断面
図、第3図は第1図のA−A線拡大断面図、第4
図は第1図のB−B線拡大断面図、第5図は実施
例第2の主軸に工具装着部の縦断面図で上半分は
NT60工具の場合、下半分はNT50工具の場
合を示す。
2,42……主軸、4……大コレツト、5……
抜きコレツト、6,12,48……ドローバ、1
0,17,51……皿ばね、11……第2小コレ
ツト、30,54……ホルダ、33……第1小コ
レツト、37……引上げピン、49……コレツ
ト、52,54……盲蓋。
Fig. 1 is a longitudinal sectional view of the tool mounting part of the first spindle of the embodiment, Fig. 2 is a longitudinal sectional view of the tool extraction cylinder part, and Fig. 3 is an enlarged sectional view taken along the line A-A in Fig. 1. 4
The figure is an enlarged cross-sectional view taken along the line B-B in Figure 1, and Figure 5 is a vertical cross-sectional view of the tool mounting part on the second main shaft of the embodiment, with the upper half shown.
In the case of NT60 tool, the lower half shows the case of NT50 tool. 2,42...Main shaft, 4...Big collection, 5...
Extraction collect, 6, 12, 48... Drawbar, 1
0, 17, 51... Disc spring, 11... Second small collet, 30, 54... Holder, 33... First small collet, 37... Pulling pin, 49... Collet, 52, 54... Blind lid.
Claims (1)
大きなテーパシヤンクを装着するテーパ穴及び回
り決め兼位置決め用のキーを設け、該主軸のテー
パ穴に嵌合するテーパ部を有し前記装着する工具
または工具ホルダのテーパより小さなテーパの工
具または工具ホルダを装着するテーパ穴及び前記
キーと係合するキー溝及びこのテーパ穴に装着す
る工具または工具ホルダと係合するキーを有する
フランジ付ホルダを交換可能に設け、該フランジ
付ホルダを主軸に装着したとき嵌着固定する第1
手段を主軸に設け、前記フランジ付ホルダに装着
した工具または工具ホルダを嵌着固定する第2手
段を主軸に設け、前記第1手段、第2手段を独立
に作用する作動手段を設けたことを特徴とするシ
ヤンクのテーパが異なる工具を装着できる主軸を
有する工作機械。 The main spindle is provided with a taper hole for mounting the tool to be mounted or the largest taper shank of the tool holder and a key for rotation and positioning, and has a tapered portion that fits into the taper hole of the main shaft, and the tool or tool to be mounted. A flanged holder having a taper hole for mounting a tool or tool holder with a taper smaller than the taper of the holder, a key groove for engaging with the key, and a key for engaging with the tool or tool holder for mounting in this tapered hole is replaceable. A first part is provided, and is fitted and fixed when the flanged holder is attached to the main shaft.
A means is provided on the main shaft, a second means for fitting and fixing the tool or tool holder mounted on the flanged holder is provided on the main shaft, and an actuating means is provided that independently acts on the first means and the second means. A machine tool with a main spindle that can mount tools with different shank tapers.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1985078984U JPH0325852Y2 (en) | 1985-05-27 | 1985-05-27 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1985078984U JPH0325852Y2 (en) | 1985-05-27 | 1985-05-27 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS61195940U JPS61195940U (en) | 1986-12-06 |
JPH0325852Y2 true JPH0325852Y2 (en) | 1991-06-05 |
Family
ID=30623470
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1985078984U Expired JPH0325852Y2 (en) | 1985-05-27 | 1985-05-27 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0325852Y2 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5313533B2 (en) * | 2008-03-27 | 2013-10-09 | 実 金松 | Spindle unit to which both tool spindle and chuck spindle can be mounted |
JP4890593B2 (en) * | 2009-06-15 | 2012-03-07 | 実 金松 | Grab mechanism such as tool, chuck, clamp mechanism |
JP7075638B1 (en) * | 2021-03-24 | 2022-05-26 | 株式会社Mck | Machine tools equipped with spindle devices and spindle devices |
JP7309245B1 (en) * | 2023-01-13 | 2023-07-18 | 株式会社Mck | Spindle device and machine tool equipped with the spindle device |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5316976A (en) * | 1976-07-30 | 1978-02-16 | Hitachi Seiki Co Ltd | Tool main spindle which can use large diameter tool together with small diameter tool |
-
1985
- 1985-05-27 JP JP1985078984U patent/JPH0325852Y2/ja not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5316976A (en) * | 1976-07-30 | 1978-02-16 | Hitachi Seiki Co Ltd | Tool main spindle which can use large diameter tool together with small diameter tool |
Also Published As
Publication number | Publication date |
---|---|
JPS61195940U (en) | 1986-12-06 |
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