JPH0520809U - Tool holder - Google Patents
Tool holderInfo
- Publication number
- JPH0520809U JPH0520809U JP7633291U JP7633291U JPH0520809U JP H0520809 U JPH0520809 U JP H0520809U JP 7633291 U JP7633291 U JP 7633291U JP 7633291 U JP7633291 U JP 7633291U JP H0520809 U JPH0520809 U JP H0520809U
- Authority
- JP
- Japan
- Prior art keywords
- tool
- axial direction
- rotary shaft
- stopper
- fitted
- 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.)
- Pending
Links
Landscapes
- Jigs For Machine Tools (AREA)
- Gripping On Spindles (AREA)
Abstract
(57)【要約】
【目的】 工具の軸線方向の位置決め機構を簡素化し、
コストを低減する。
【構成】 ホルダ本体１の内部を軸線方向に貫通する段
付孔７に、軸線方向への移動を阻止された回転軸８とそ
の先端部に設けた雌ねじ１４に、軸線方向のみに移動自
在なストッパ９をねじ結合し、ホルダ本体１の外周部か
ら段付孔７に直交する操作部材取付孔１８を設けて、こ
の操作部材取付孔１８内に回転のみ可能な操作部材１９
を嵌め込み、この操作部材１９と回転軸８との間を略Ｌ
字状の弾性部材２０で連結し、ホルダ本体１の外側から
操作部材１９を回転することにより弾性部材２０を介し
て回転軸８を回転させてストッパ９を工具Ｔ側へ移動
し、工具Ｔの軸線方向の位置決めを行う。
(57) [Summary] [Purpose] Simplifies the tool axial positioning mechanism,
Reduce costs. [Structure] In a stepped hole 7 penetrating the inside of the holder main body 1 in the axial direction, a rotary shaft 8 which is prevented from moving in the axial direction and a female screw 14 provided at its tip end are movable only in the axial direction. The stopper 9 is screw-coupled, and an operating member mounting hole 18 is provided from the outer peripheral portion of the holder body 1 orthogonal to the stepped hole 7, and the operating member mounting hole 18 is only rotatable in the operating member 19.
Is inserted, and the space between the operating member 19 and the rotary shaft 8 is approximately L.
The elastic member 20 having a V-shape is connected, and the operating member 19 is rotated from the outside of the holder body 1 to rotate the rotary shaft 8 via the elastic member 20 to move the stopper 9 to the tool T side. Position in the axial direction.
Description
【０００１】[0001]
本考案は、例えばマシニングセンタ等の工作機械において、ドリル、リーマ、 エンドミル等の工具を取り付けるために用いる工具ホルダに関するものである。 The present invention relates to a tool holder used for mounting a tool such as a drill, a reamer, and an end mill in a machine tool such as a machining center.
【０００２】[0002]
マシニングセンタ等に用いられる工具ホルダでは、工具の軸線方向の位置決め を行う必要があり、このための位置決め機構として従来では工具ホルダの工具取 付部の底部に雌ねじを設け、この雌ねじに位置決め用の雄ねじを螺合させた方式 のものが良く知られている。 In tool holders used for machining centers, etc., it is necessary to position the tool in the axial direction.As a positioning mechanism for this purpose, a female screw is conventionally provided on the bottom of the tool mounting part of the tool holder, and this female screw is used for positioning. The method of screwing together is well known.
【０００３】 しかし、マシニングセンタ等に使用される工具ホルダでは、その後部にプルス タッドボルトが取り付けてあるため、後部側から操作することができず、工具を 取り外した状態で工具取付部の口元側から雄ねじを操作しなければならない。こ のために、目的とする工具の位置決めを１回で行うことは殆ど不可能である。However, in a tool holder used for a machining center or the like, since a pull-stud bolt is attached to the rear portion of the tool holder, it cannot be operated from the rear side, and the male screw is attached from the mouth side of the tool mounting portion with the tool removed. Have to operate. Because of this, it is almost impossible to position the desired tool in one go.
【０００４】 このような欠点を改善するため、例えば実開昭６２−１７８０３２号公報、実 開平２−２３９１０号公報、及び実公平３−５３６５号公報等に開示されている ように、工具ホルダの外周部側から操作することにより、工具を工具ホルダ内に 挿入したまま、軸線方向の位置決めを行えるようにした方法も提案されている。In order to improve such a defect, as disclosed in, for example, Japanese Utility Model Publication No. 62-178032, Japanese Utility Model Publication No. 2-23910, and Japanese Utility Model Publication No. 3-5365, tool holder A method has also been proposed in which the tool can be positioned in the axial direction while being inserted into the tool holder by operating from the outer peripheral side.
【０００５】[0005]
しかし、これらの改善された方式では、操作部の回動を位置決め部に伝達する 手段として歯車を用いているため機構的に複雑化し、コストも高くなるという欠 点を有している。 本考案の目的は、このような従来例の欠点を改善し、工具の軸線方向の位置決 め機構を簡素化して、コストを大幅に低減できるようにした工具ホルダを提供す ることにある。 However, these improved methods have the drawbacks that the gears are used as a means for transmitting the rotation of the operating portion to the positioning portion, which makes the mechanism complicated and increases the cost. An object of the present invention is to provide a tool holder capable of improving the drawbacks of the conventional example, simplifying the axial positioning mechanism of the tool, and significantly reducing the cost.
【０００６】[0006]
上述の目的を達成するための本考案に係る工具ホルダは、後端部に工作機械の 主軸に挿入するシャンク部を、先端部に工具を保持するチャック部を備えたホル ダ本体の内部に、軸線方向に貫通する段付部を設け、該段付部内に軸線方向への 移動を阻止する回転軸と、該回転軸にねじ結合して該回転軸の回転により軸線方 向へ移動するストッパとを嵌合し、前記ホルダ本体の外周部から前記段付部に直 交する操作部材取付孔を設け、該操作部材取付孔に回転のみ可能な操作部材を嵌 合し、該操作部材と前記回転軸とを略Ｌ字状に曲折した弾性部材によって連結し 、該操作部材の回動を前記弾性部材により前記回転軸に伝達して、工具の軸線方 向の位置決めを行うことを特徴とするものである。 A tool holder according to the present invention for achieving the above object has a shank portion to be inserted into a spindle of a machine tool at a rear end portion, and a chuck body at a tip portion to hold a tool inside a holder body. A stepped portion that penetrates in the axial direction is provided, and a rotation shaft that prevents movement in the axial direction in the stepped portion, and a stopper that is screwed to the rotation shaft and moves in the axial direction by rotation of the rotation shaft. And an operating member mounting hole that directly intersects the stepped portion from the outer peripheral portion of the holder main body is provided, and a rotatable only operating member is fitted in the operating member mounting hole, and the operating member and the rotation member are rotated. A shaft is connected to the rotary shaft by an elastic member bent in a substantially L shape, and the rotation of the operating member is transmitted to the rotary shaft by the elastic member to position the tool in the axial direction. Is.
【０００７】[0007]
上述の構成を有する工具ホルダは、ホルダ本体の外周部から操作部材を回転す ると、略Ｌ字状に曲折した弾性部材を介してホルダ本体内部の回転軸が回動し、 この回動によりストッパが軸線方向に移動して工具を押し出して、その軸線方向 の位置決めを行う。 In the tool holder having the above-described configuration, when the operation member is rotated from the outer peripheral portion of the holder body, the rotation shaft inside the holder body is rotated via the elastic member bent in a substantially L shape, and by this rotation. The stopper moves in the axial direction and pushes out the tool to perform positioning in the axial direction.
【０００８】[0008]
本考案を図示の実施例に基づいて詳細に説明する。 図１は本考案をマシニングセンタ用の工具ホルダに適用した実施例を示し、１ はホルダ本体、Ｔは工具を示している。ホルダ本体１は工作機械の主軸に挿入さ れるテーパ状のシヤンク部２、工具交換用のフランジ部３、工具Ｔを取り付ける 円筒部４から成り、円筒部４の先端側にはナット５及びコレット６で構成される チャック部が設けられ、工具Ｔを把持するようになっている。ホルダ本体１には 全長に渡って軸線方向に段付孔７が設けられ、その先端部側は工具Ｔを挿入する 工具保持孔７ａとなり、中間部には回転軸８とそれにねじ結合されたストッパ９ が嵌合されている。 The present invention will be described in detail with reference to the illustrated embodiment. FIG. 1 shows an embodiment in which the present invention is applied to a tool holder for a machining center, where 1 is a holder body and T is a tool. The holder main body 1 is composed of a tapered shank portion 2 which is inserted into the spindle of a machine tool, a flange portion 3 for tool exchange, and a cylindrical portion 4 to which a tool T is attached. A nut 5 and a collet 6 are provided on the tip side of the cylindrical portion 4. A chuck portion is provided to hold the tool T. The holder body 1 is provided with a stepped hole 7 in the axial direction over the entire length, the tip end side of which serves as a tool holding hole 7a into which the tool T is inserted, and a rotary shaft 8 and a stopper screwed thereto 9 is fitted.
【０００９】 回転軸８は軸線方向の移動を阻止された状態で回転自在に嵌合されており、回 転軸８の外周部及び段付孔７の内周部に形成されたＲ溝内に適当数の鋼球１０が 収容され、この鋼球１０によって回転軸８の軸線方向の移動が阻止され、かつホ ルダ本体１に対しては回転自在となっている。また、鋼球１０は挿入孔１１に嵌 合されたねじ付きピン１２及び緩み止め用のダブルロック式の止めねじ１３によ って落下が防止されている。The rotary shaft 8 is rotatably fitted in a state in which it is prevented from moving in the axial direction, and is fitted in an R groove formed in the outer peripheral portion of the rotary shaft 8 and the inner peripheral portion of the stepped hole 7. An appropriate number of steel balls 10 are accommodated, the steel balls 10 prevent movement of the rotating shaft 8 in the axial direction, and are rotatable with respect to the holder body 1. Further, the steel ball 10 is prevented from falling by a threaded pin 12 fitted in an insertion hole 11 and a double lock type set screw 13 for preventing loosening.
【００１０】 回転軸８には軸線方向に雌ねじ１４が設けられ、ここにストッパ９の雄ねじが 螺合され、回転軸８が回転した際にストッパ９は軸線方向に移動するようになっ ている。即ち、ストッパ９には回転を阻止するための回転止めピン１５が固定さ れ、この回転止めピン１５はホルダ本体１の雌ねじ１４の両側に開けられた長溝 １６に嵌合している。従って、回転軸８が回転すると、回転を回転止めピン１５ によって阻止されているストッパ９は、長溝１６の長さの範囲において軸線方向 に移動することになる。A female screw 14 is provided on the rotary shaft 8 in the axial direction, and a male screw of a stopper 9 is screwed into the female screw 14, and the stopper 9 moves in the axial direction when the rotary shaft 8 rotates. That is, a rotation stop pin 15 for preventing rotation is fixed to the stopper 9, and the rotation stop pin 15 is fitted into long grooves 16 formed on both sides of the female screw 14 of the holder body 1. Therefore, when the rotary shaft 8 rotates, the stopper 9 whose rotation is blocked by the rotation stop pin 15 moves in the axial direction within the range of the length of the long groove 16.
【００１１】 また、ホルダ本体１のフランジ部３に設けられているキー溝底面１７から段付 孔７に直交する段付きの操作部材取付孔１８が設けられ、この内部に操作部材１ ９が回転自在に嵌合され、操作部材１９と回転軸８とは略Ｌ字状に曲折されたコ イルばねから成る弾性部材２０によって連結されている。操作部材取付孔１８に 嵌め込まれた操作部材１９は、操作部材取付孔１８の段部１８ａによって内方へ の進行を阻止され、またスペーサ２１と止め輪２２によって外方への脱出が止め られている。Further, a stepped operation member mounting hole 18 which is orthogonal to the stepped hole 7 is provided from a key groove bottom surface 17 provided on the flange portion 3 of the holder body 1, and the operation member 19 is rotated therein. The operation member 19 and the rotating shaft 8 are freely fitted and are connected to each other by an elastic member 20 formed of a coil spring bent in an approximately L shape. The operation member 19 fitted in the operation member mounting hole 18 is prevented from moving inward by the step portion 18a of the operation member mounting hole 18, and is prevented from coming out by the spacer 21 and the retaining ring 22. There is.
【００１２】 操作部材１９の内側には、弾性部材２０の一端を取り付けるための弾性部材取 付部として、弾性部材２０の端部を収容する円形孔２３と弾性部材２０の突出端 を嵌合する小径孔２４が設けられている。また、回転軸８の後端にも弾性部材２ ０の他端を取り付けるための弾性部材取付部として、同様な円形孔２５と小径孔 ２６とが設けられている。Inside the operation member 19, as a resilient member mounting portion for mounting one end of the resilient member 20, a circular hole 23 for accommodating the end portion of the resilient member 20 and a projecting end of the resilient member 20 are fitted. A small diameter hole 24 is provided. A circular hole 25 and a small-diameter hole 26 are also provided at the rear end of the rotary shaft 8 as an elastic member mounting portion for mounting the other end of the elastic member 20.
【００１３】 ただし、弾性部材２０の両端部を取り付けるための弾性部材取付部は必ずしも 円形孔にするとは限らず、例えば図２に例示するように弾性部材２０の端部に嵌 入される軸状凸体２７ａ、２７ｂを用いてもよい。この場合も、弾性部材２０の 両突出端２０ａ、２０ｂを嵌入する小径孔２８ａ、２８ｂが併用される。However, the elastic member mounting portion for mounting both ends of the elastic member 20 is not necessarily a circular hole, and for example, as shown in FIG. 2, a shaft-like member fitted to the end portion of the elastic member 20. The convex bodies 27a and 27b may be used. Also in this case, the small diameter holes 28a and 28b into which the projecting ends 20a and 20b of the elastic member 20 are fitted are also used.
【００１４】 更に、図３に例示するように、操作部材１９の内側と回転軸８の後端にそれぞ れ板状凸体２９ａ、２９ｂを設け、この板状凸体２９ａ、２９ｂにそれぞれ弾性 部材２０の両端のフック状突出端２０ｃ、２０ｄを挿し込む小径孔３０ａ、３０ ｂを設けてもよい。なお、何れの場合も操作部材１９の外面には例えば六角形の 操作孔３１が設けられている。Further, as illustrated in FIG. 3, plate-like convex bodies 29a and 29b are provided inside the operation member 19 and at the rear end of the rotary shaft 8, respectively, and the plate-like convex bodies 29a and 29b are respectively elastic. Small-diameter holes 30a, 30b may be provided to insert the hook-shaped protruding ends 20c, 20d at both ends of the member 20. In any case, a hexagonal operation hole 31 is provided on the outer surface of the operation member 19.
【００１５】 また、図１において、ホルダ本体１の円筒部４には長溝１６部分を覆う形でカ バー３２が嵌合され、このカバー３２は止め輪３３によって固定されている。ま た、ストッパ９の先端側は、コレット６の内部に進入できるように、コレット６ の内径よりも小径の部分を一定長さに設けてもよい。Further, in FIG. 1, a cover 32 is fitted in the cylindrical portion 4 of the holder body 1 so as to cover the long groove 16 portion, and the cover 32 is fixed by a retaining ring 33. In addition, a portion having a diameter smaller than the inner diameter of the collet 6 may be provided on the tip side of the stopper 9 so that the collet 6 can enter the inside thereof.
【００１６】 実際に使用する場合には、プルスタッドボルトが取り付けられた工具ホルダを プリセッタに取り付け、ナット５を緩めて工具Ｔをストッパ９に当接するまでチ ャック部に挿入する。次に、操作部材１９の操作孔３１に六角棒スパナ等の操作 具を挿入して回転すると、その回転はコイル状の弾性部材２０により回転軸８に 伝達されて回転軸８が回転し、同時に回転軸８にねじ結合されたストッパ９が軸 線方向に移動して工具Ｔを押すので、工具Ｔを所定寸法に位置決めすることがで き、位置決め後はナット５を締め付けて工具Ｔを固定すればよい。When actually used, the tool holder to which the pull stud bolt is attached is attached to the presetter, the nut 5 is loosened, and the tool T is inserted into the chuck portion until it comes into contact with the stopper 9. Next, when an operation tool such as a hexagonal wrench is inserted into the operation hole 31 of the operation member 19 and rotated, the rotation is transmitted to the rotary shaft 8 by the coil-shaped elastic member 20 and the rotary shaft 8 rotates, and at the same time. Since the stopper 9 screwed to the rotary shaft 8 moves in the axial direction and pushes the tool T, the tool T can be positioned to a predetermined dimension, and after the positioning, the nut 5 is tightened to fix the tool T. Good.
【００１７】 なお、図１に示す実施例では回転軸８の軸線方向の動きを鋼球１０によって阻 止した場合を示したが、鋼球１０を用いる代りに、図４に示すように複数のねじ 付きピン３４の先端部を回転軸８の外周に設けた環状溝３５に嵌合するようにし てもよい。この場合に、環状溝３５の幅をねじ付きピン３４の外径寸法に適合す るように設定することは云うまでもない。Although the embodiment shown in FIG. 1 shows the case where the movement of the rotary shaft 8 in the axial direction is blocked by the steel ball 10, instead of using the steel ball 10, as shown in FIG. You may make it the front-end | tip part of the threaded pin 34 fit in the annular groove 35 provided in the outer periphery of the rotating shaft 8. As shown in FIG. In this case, it goes without saying that the width of the annular groove 35 is set to match the outer diameter of the threaded pin 34.
【００１８】 なお、図５に示すように後端にタング３６を有する工具Ｔを用いる場合に備え て、ストッパ９の先端にタング３６を嵌合する凹溝３７を設ける場合もある。ま た、図６に示すようにストッパ９の回転阻止手段として、ストッパ９側に軸線方 向の長溝３８を設け、ホルダ本体１の円筒部４に固定した回転止めピン３９の先 端を長溝３８に嵌め込むようにしてもよい。Incidentally, as shown in FIG. 5, in case of using the tool T having the tongue 36 at the rear end, a recessed groove 37 into which the tongue 36 is fitted may be provided at the tip of the stopper 9. Further, as shown in FIG. 6, as a rotation preventing means for the stopper 9, a long groove 38 in the axial direction is provided on the stopper 9 side, and a tip of a rotation stopping pin 39 fixed to the cylindrical portion 4 of the holder body 1 is formed into the long groove 38. You may make it fit in.
【００１９】[0019]
以上説明したように本考案に係る工具ホルダは、工具の位置決めを行う操作部 材を工具ホルダの外側から操作できるため、プルスタッドボルトを組み付けた状 態でも迅速に工具の位置決めを行うことができる。また、操作部材の回動を弾性 部材によって回転軸に伝達できるため、位置決め機構が著しく簡素化され、コス トを大幅に節減することが可能である。 As described above, in the tool holder according to the present invention, since the operation member for positioning the tool can be operated from the outside of the tool holder, the tool can be positioned quickly even with the pull stud bolt assembled. .. Further, since the rotation of the operating member can be transmitted to the rotary shaft by the elastic member, the positioning mechanism can be remarkably simplified and the cost can be significantly reduced.
【図１】実施例の断面図である。FIG. 1 is a sectional view of an example.
【図２】要部の変形例の構成図である。FIG. 2 is a configuration diagram of a modified example of a main part.
【図３】要部の変形例の構成図である。FIG. 3 is a configuration diagram of a modified example of a main part.
【図４】要部の変形例の断面図である。FIG. 4 is a cross-sectional view of a modified example of the main part.
【図５】要部の変形例の断面図である。FIG. 5 is a cross-sectional view of a modified example of the main part.
【図６】要部の変形例の断面図である。FIG. 6 is a cross-sectional view of a modified example of the main part.
１ ホルダ本体 ２ シャンク部 ３ フランジ部 ４ 円筒部 ８ 回転軸 ９ ストッパ １５、３９ 回転止めピン １９ 操作部材 ２０ 弾性部材 ３１ 操作孔 ３４ ねじ付きピン ３５ 環状溝 1 Holder Main Body 2 Shank Part 3 Flange Part 4 Cylindrical Part 8 Rotating Shaft 9 Stopper 15, 39 Rotation Stop Pin 19 Operating Member 20 Elastic Member 31 Operating Hole 34 Threaded Pin 35 Annular Groove
Claims (1)
ンク部を、先端部に工具を保持するチャック部を備えた
ホルダ本体の内部に、軸線方向に貫通する段付部を設
け、該段付部内に軸線方向への移動を阻止する回転軸
と、該回転軸にねじ結合して該回転軸の回転により軸線
方向へ移動するストッパとを嵌合し、前記ホルダ本体の
外周部から前記段付部に直交する操作部材取付孔を設
け、該操作部材取付孔に回転のみ可能な操作部材を嵌合
し、該操作部材と前記回転軸とを略Ｌ字状に曲折した弾
性部材によって連結し、該操作部材の回動を前記弾性部
材により前記回転軸に伝達して、工具の軸線方向の位置
決めを行うことを特徴とする工具ホルダ。1. A stepped portion penetrating in the axial direction is provided inside a holder main body having a shank portion to be inserted into a spindle of a machine tool at a rear end portion and a chuck portion to hold a tool at a front end portion. A rotary shaft that prevents movement in the axial direction is fitted in the stepped portion, and a stopper that is screwed to the rotary shaft and that moves in the axial direction by rotation of the rotary shaft is fitted, and the stopper is attached from the outer peripheral portion of the holder main body. An operation member mounting hole orthogonal to the stepped portion is provided, a rotatable operation member is fitted in the operation member mounting hole, and the operation member and the rotary shaft are connected by an elastic member bent in a substantially L shape. Then, the tool holder is characterized in that the rotation of the operating member is transmitted to the rotary shaft by the elastic member to position the tool in the axial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7633291U JPH0520809U (en) | 1991-08-27 | 1991-08-27 | Tool holder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7633291U JPH0520809U (en) | 1991-08-27 | 1991-08-27 | Tool holder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0520809U true JPH0520809U (en) | 1993-03-19 |
Family
ID=13602405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7633291U Pending JPH0520809U (en) | 1991-08-27 | 1991-08-27 | Tool holder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0520809U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100413206B1 (en) * | 2001-03-08 | 2003-12-31 | 김용기 | Tool positon determination system for a machine tool with spindle |
| JP2009525194A (en) * | 2006-02-03 | 2009-07-09 | ケンナメタル インコーポレイテッド | Method of cutting hole and hole surface, composite tool thereof, and cutting blade in composite tool |
-
1991
- 1991-08-27 JP JP7633291U patent/JPH0520809U/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100413206B1 (en) * | 2001-03-08 | 2003-12-31 | 김용기 | Tool positon determination system for a machine tool with spindle |
| JP2009525194A (en) * | 2006-02-03 | 2009-07-09 | ケンナメタル インコーポレイテッド | Method of cutting hole and hole surface, composite tool thereof, and cutting blade in composite tool |
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