JPH03121706A - Coupling device for exchange chuck - Google Patents
Coupling device for exchange chuckInfo
- Publication number
- JPH03121706A JPH03121706A JP25855089A JP25855089A JPH03121706A JP H03121706 A JPH03121706 A JP H03121706A JP 25855089 A JP25855089 A JP 25855089A JP 25855089 A JP25855089 A JP 25855089A JP H03121706 A JPH03121706 A JP H03121706A
- Authority
- JP
- Japan
- Prior art keywords
- chuck
- replacement
- drawbar
- axial
- locking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000008878 coupling Effects 0.000 title abstract description 17
- 238000010168 coupling process Methods 0.000 title abstract description 17
- 238000005859 coupling reaction Methods 0.000 title abstract description 17
- 230000002093 peripheral effect Effects 0.000 description 7
- 210000000078 claw Anatomy 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000011295 pitch Substances 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
Landscapes
- Gripping On Spindles (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、主軸、心押し台等に取付けたチャック取付は
体に、替えチャックを着脱可能に連結する替えチャック
の連結装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a replacement chuck connecting device for removably connecting a replacement chuck to a chuck mounting body attached to a main spindle, tailstock, etc. .
（従来の技術） 従来の技術として、第３図に示す構造のものがあった。(Conventional technology) As a conventional technique, there is a structure shown in FIG.
第３図において、１は主軸であり、この主軸１の前部（
左部）に円板状のチャック取付は体２を同軸に固定支持
する。In Fig. 3, 1 is the main shaft, and the front part of this main shaft 1 (
A disc-shaped chuck is attached to the left part) to fix and support the body 2 coaxially.
チャック取付は体２は、例えば６個の連結装置３を周方
向に等ピッチで設け、この連結装置３により替えチャッ
ク１２をチャック取付は体２の前部に着脱可能に連結す
る。The chuck mounting body 2 is provided with, for example, six coupling devices 3 at equal pitches in the circumferential direction, and the replacement chuck 12 is removably connected to the front portion of the chuck mounting body 2 by the coupling devices 3.
即ち、上記連結袋Ｗ３は、放射状に形成した６個の収容
穴４内に、そわぞれコイルばね５と駆動腕６とを外周方
向に向けて順次嵌合させる。That is, in the connection bag W3, the coil spring 5 and the drive arm 6 are sequentially fitted into the six radially formed accommodation holes 4 toward the outer circumference.
各駆動腕６の外周側に油圧ピストン７を配置し、油圧ピ
ストン７を作動油の供給により軸心方向に作動させて上
記駆動腕６をコイルばね５の反力に抗して軸心方向に押
圧移動させる。A hydraulic piston 7 is disposed on the outer peripheral side of each drive arm 6, and the hydraulic piston 7 is actuated in the axial direction by supplying hydraulic oil to move the drive arm 6 in the axial direction against the reaction force of the coil spring 5. Move by pressing.
上記各駆動腕６の右方に、ピン８で揺動可能に支持した
アーム９を配置し、アーム９の左端を駆動腕６の軸方向
中間部に係止する。An arm 9 swingably supported by a pin 8 is disposed to the right of each of the drive arms 6, and the left end of the arm 9 is locked to an axially intermediate portion of the drive arm 6.
また、上記各アーム９の右方に係止駒１０を軸心方向に
摺動可能に嵌合させるとともに、係止駒１０の軸心端部
をチャック取付は体２から軸心方向に突出させ、この係
止駒１０の軸方向中間部に上記アーム９の右端を係止す
る。Further, a locking piece 10 is fitted to the right side of each arm 9 so as to be slidable in the axial direction, and the axial end of the locking piece 10 is made to protrude from the chuck body 2 in the axial direction. , the right end of the arm 9 is locked to the axially intermediate portion of this locking piece 10.
また、チャック取付は体２の右面（前面）内周部にリン
グ状のカービックカップリング１１を右方に向けて突出
固定する。Furthermore, the chuck is attached by fixing a ring-shaped curvic coupling 11 to the inner circumference of the right side (front side) of the body 2 so as to protrude rightward.
このカービックカップリング１１はその右端全周に放射
状の凹凸歯（ア）を形成してなる。This curvic coupling 11 has radial uneven teeth (A) formed all around its right end.
１２は上記チャック取付は体２の右方に同軸に取付けた
替えチャックである。12 is a replacement chuck that is coaxially attached to the right side of the body 2.
この替えチャック１２は、左部外周に前述した係止駒１
０の軸心端部が係合する環状の凹溝１２ａを形成し、左
面内局部にリング状の係合板１３を右方に凹ませて固定
し、この係合板１３の左面全周に上記凹凸歯（ア）と係
合する放射状の凹凸歯を形成し、また右端部に小径のテ
ーパ軸１２ｂを形成し、このテーパ軸１２ｂにコレット
チャック１９をテーパ嵌合させてなる。This replacement chuck 12 has the aforementioned locking piece 1 on the left outer periphery.
An annular concave groove 12a is formed in which the axial center end of 0 is engaged, and a ring-shaped engagement plate 13 is recessed and fixed to the right in a local part of the left surface, and the above-mentioned unevenness is formed on the entire circumference of the left surface of this engagement plate 13. Radially uneven teeth are formed to engage with the teeth (A), and a small diameter taper shaft 12b is formed at the right end, and the collet chuck 19 is tapered fitted onto this taper shaft 12b.
前述した主軸１．チャック取付は体２および替えチャッ
ク１２の軸心部に、それぞれドローバ−１４、ガイド筒
１７および作動ロッド１８を嵌合させる。The aforementioned spindle 1. To attach the chuck, the drawbar 14, guide cylinder 17, and actuating rod 18 are fitted to the axial center portions of the body 2 and the replacement chuck 12, respectively.
ドローバ−１４は、その右端部に円筒状の周壁をスリッ
トにより周方向に分割するとともに、右端に軸心方向に
突出する爪と半径方向外方に突出するカム面とを形成し
てなる弾性係止片１５を有し、各弾性係止片１５の内方
にてドローバー１４の右端軸心部に固定された押し駒１
６を有してなる。The drawbar 14 has a cylindrical circumferential wall divided in the circumferential direction by slits at its right end, and an elastic engagement member formed by forming a claw projecting in the axial direction and a cam surface projecting outward in the radial direction at the right end. A push piece 1 has a stopper piece 15 and is fixed to the right end shaft center of the drawbar 14 inside each elastic locking piece 15.
6.
また、ガイド筒１７は、その右端内周面を右方に向かっ
て拡開するテーパ穴に形成してなる。Further, the guide tube 17 has a right end inner circumferential surface formed into a tapered hole that widens toward the right.
また１作動ロッド１８は、右端の大径フランジ部１８ａ
をコレットチャック１９の右端面に当接させ、左部の軸
部に括れ部１８ｂを形成してなる。Further, the first operating rod 18 has a large diameter flange portion 18a at the right end.
is brought into contact with the right end surface of the collet chuck 19, and a constricted portion 18b is formed in the left shaft portion.
そして、ドローバ−１４の弾性係止片１５をガイド筒１
７により軸心方向に弾性変形させてその右端の爪を、弾
性係止片１５内に嵌合させた括れ部１８ｂに係合させ、
この状態でドローバ−１４を介して作動ロッド１８を左
右動させることにより、コレットチャック１９を開閉さ
せる。Then, the elastic locking piece 15 of the drawbar 14 is attached to the guide cylinder 1.
7 to elastically deform it in the axial direction and engage the right end claw with the constricted portion 18b fitted in the elastic locking piece 15,
In this state, the collet chuck 19 is opened and closed by moving the operating rod 18 left and right via the draw bar 14.
また、替えチャック１２をチャック取付は体２から離脱
させる際には、まず、ドローバ−１４を右方に移動させ
て弾性係止片１５の右端（カム面）をガイド筒１７から
右方に突出させ、弾性係止片１５を大径に弾性復帰させ
て爪を括れ部１８ｂから離脱させる。In addition, when removing the replacement chuck 12 from the chuck attachment body 2, first move the drawbar 14 to the right to cause the right end (cam surface) of the elastic locking piece 15 to protrude to the right from the guide cylinder 17. Then, the elastic locking piece 15 is elastically returned to its larger diameter, and the claw is released from the constricted portion 18b.
次いで、油圧ピストン７を軸心方向に作動させて駆動腕
６を軸心方向に押圧し、アーム９を第３図において左回
動させて係止駒１ｏを半径方向外方に移動させ、係止駒
１０の軸心端部を替えチャック１２の凹溝１２ａから離
脱させる。Next, the hydraulic piston 7 is actuated in the axial direction to press the drive arm 6 in the axial direction, and the arm 9 is rotated to the left in FIG. The axial end of the stopper 10 is removed from the groove 12a of the chuck 12.
この状態で、替えチャック１２を右方に移動させてチャ
ック取付は体２から離脱させる。In this state, the replacement chuck 12 is moved to the right to detach the chuck from the body 2.
また、替えチャック１２をチャック取付は体２に連結す
る際には、上記弾性係止片１５を大径に弾性復帰させた
状態で、替えチャック１２をチャック取付は体２の前面
に同軸に配置し。In addition, when connecting the replacement chuck 12 to the body 2, the elastic locking piece 15 is elastically restored to a large diameter, and the replacement chuck 12 is placed coaxially on the front surface of the body 2. death.
係止板１３の凹凸歯をカービックカップリング１１の凹
凸歯（ア）に係合させるとともに、コレットチャック１
８の括れ部１８ｂを弾性係止片１５の軸心部に嵌合させ
る。The concave and convex teeth of the locking plate 13 are engaged with the concave and convex teeth (A) of the curvic coupling 11, and the collet chuck 1
The constricted portion 18b of No. 8 is fitted into the axial center portion of the elastic locking piece 15.
次いで、油圧ピストン７を半径方向外方に作動させる。The hydraulic piston 7 is then actuated radially outward.
さすれば、駆動腕６がコイルばね５により半径方向外方
に押圧移動され、これに伴ってアーム９が第３図におい
て右回動されて係止駒１０が軸心方向に移動され、その
軸心端部が替えチャック１２の凹溝１２ａに嵌合し、こ
れにより、上記替えチャック１２がチャック取付は体２
に連結されることになる。Then, the drive arm 6 is pushed outward in the radial direction by the coil spring 5, and accordingly, the arm 9 is rotated to the right in FIG. 3, and the locking piece 10 is moved in the axial direction. The axial end fits into the groove 12a of the replacement chuck 12, so that the replacement chuck 12 is attached to the body 2.
will be connected to.
なお、コレットチャック１９の開閉は、ドローバ−１４
の前進（右方移動）時に押し駒１６で括れ部１８ｂの左
端面を押圧し、また、ドローバ−１４の後進（左方移動
）時に弾性係止片１５で括れ部１８ｂを引っ張ることに
より１作動ロッド１８を右動および左動させてコレット
チャック１９を開閉させる。Note that the collet chuck 19 is opened and closed using the drawbar 14.
When the drawbar 14 moves forward (moves to the right), the left end surface of the constricted portion 18b is pressed by the pusher piece 16, and when the drawbar 14 moves backward (moves leftward), the elastic locking piece 15 pulls the constricted portion 18b. The collet chuck 19 is opened and closed by moving the rod 18 to the right and left.
（発明が解決しようとする課題）
上記従来のものは、チャック取付は体２の半径方向外方
に多数の油圧ピストン７を設け、この油圧ピストン７に
より駆動腕６を軸心方向に移動させて係止駒１０を替え
チャック１２から離脱させるようにしていたので、外径
が増大するとともに、ドローバ−操作用の油圧機構に加
え、連結装置操作用の油圧機構を必要とし、操作が煩雑
になる欠点があった。(Problems to be Solved by the Invention) In the above-mentioned conventional device, the chuck is mounted by providing a large number of hydraulic pistons 7 outside the body 2 in the radial direction, and using the hydraulic pistons 7 to move the drive arm 6 in the axial direction. Since the locking piece 10 is changed and removed from the chuck 12, the outer diameter increases, and in addition to the hydraulic mechanism for operating the drawbar, a hydraulic mechanism for operating the coupling device is required, making the operation complicated. There were drawbacks.
本発明は、上記欠点を解消した新規な替えチャックの連
結装置を得ることを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to obtain a new replacement chuck coupling device that eliminates the above-mentioned drawbacks.
（課題を解決するための手段）
本発明は、上記目的を達成するために、以下の如く構成
したものである。(Means for Solving the Problems) In order to achieve the above object, the present invention is configured as follows.
即ち、前部にコレットチャックを、軸心部に軸方向に往
復動してコレットチャックを開閉させる作動ロッドを有
する替えチャックを設け。That is, a collet chuck is provided at the front, and a replacement chuck is provided at the axial center, which has an operating rod that reciprocates in the axial direction to open and close the collet chuck.
替えチャックをチャック取付は体の前部に着脱可能に連
結する連結装置を設けてなる替えチャックの連結装置に
おいて、連結装置は、チャック取付は体に放射状に嵌合
し、かつ係止ばねにより軸心方向に弾圧されてその軸心
端部がチャック取付は体の軸孔内に突出する複数個の支
持体と、各支持体に固定され、かつ替えチャックの外周
部に半径方向外方から係止する係止アームと、チャック
取付は体の軸心部に嵌合してドローバーと作動ロッドと
を連結し、かつ外周部にドローバーの前進時に支持体の
軸心部を半径方向外方に押圧するカム面を有する駆動腕
と、駆動腕をそのカム面が支持体の直前に位置するまで
前進方向に弾圧する復帰ばねとを有する構成にしたもの
である。In a connecting device for a replacement chuck, the connecting device is provided with a connecting device that removably connects the chuck to the front part of the chuck attaching body, and the connecting device fits radially to the body of the chuck attaching body, and is pivoted by a locking spring. The chuck is attached by a plurality of supports that protrude into the shaft hole of the body, and is fixed to each support and engages the outer periphery of the replacement chuck from the outside in the radial direction. The locking arm and the chuck attachment fit into the axial center of the body to connect the drawbar and the actuating rod, and the outer periphery presses the axial center of the support body radially outward when the drawbar moves forward. This configuration includes a drive arm having a cam surface that moves the drive arm, and a return spring that presses the drive arm in the forward direction until the cam surface is positioned immediately in front of the support.
（作用）
本発明は上記構成にしたものであるから、ドローバーを
油圧機構等により後方に引っ張ると、駆動腕を介して作
動ロッドが後進し、コレットチャックが一方に作動、例
えば開作動され、また、ドローバ−の後方への緊張を解
除すると、復帰ばねの反力により、駆動腕が支持体の直
前位置まで前方に移動され、作動ロッドが前進してコレ
ットチャックが他方に作動、例えば閉作動される。(Function) Since the present invention has the above configuration, when the drawbar is pulled rearward by a hydraulic mechanism or the like, the actuating rod moves backward via the drive arm, and the collet chuck is actuated in one direction, for example, opened, and When the drawbar is released from the rearward tension, the drive arm is moved forward to a position just in front of the support by the reaction force of the return spring, and the actuating rod is advanced to actuate the collet chuck in the other direction, for example, to close it. Ru.
次に、油圧機構等によりドローバ−の前進量を大きくす
ると、駆動腕のカム面が支持体の軸心端を半径方向外方
に押圧し、支持体が半径方向外方に移動され、これによ
り、係止アームが半径方向外方に移動されて替えチャッ
クの外周から離脱し、替えチャックとチャック取付は体
との連結が解除されることになる。Next, when the amount of advance of the drawbar is increased by a hydraulic mechanism, etc., the cam surface of the drive arm presses the axial end of the support body radially outward, and the support body is moved radially outward. , the locking arm is moved radially outward and disengaged from the outer periphery of the replacement chuck, and the replacement chuck and the chuck attachment are disconnected from the body.
（実施例） 以下本発明の実施例を図面に基いて説明する。(Example) Embodiments of the present invention will be described below based on the drawings.
図面において、第１図は本発明の実施例を示す断面図、
第２図はその■−■線による部分断面図である。In the drawings, FIG. 1 is a sectional view showing an embodiment of the present invention;
FIG. 2 is a partial sectional view taken along the line ■-■.
第１図において、２０は主軸であり、この主軸２０の前
部（右部）に円板状のチャック取付は体２１を同軸に固
定支持する。In FIG. 1, 20 is a main shaft, and a disk-shaped chuck is attached to the front (right) part of this main shaft 20 to fixedly support a body 21 coaxially.
チャック取付は体２１は、例えば３個の連結装置２２を
周方向に等ピッチで設け、この連結装置２２により後述
の替えチャック３０をチャック取付は体２１の前部に着
脱可能に連結する。The chuck mounting body 21 is provided with, for example, three connecting devices 22 at equal pitches in the circumferential direction, and the connecting devices 22 removably connect a replacement chuck 30, which will be described later, to the front portion of the chuck mounting body 21.
上記連結装置２２は以下の如くなっている。The connecting device 22 is as follows.
即ち、チャック取付は体２１内に３個の円柱状の支持体
２３を周方向に放射状に配置して半径方向に摺動可能に
嵌挿する。That is, to attach the chuck, three cylindrical supports 23 are arranged radially in the circumferential direction within the body 21 and inserted so as to be slidable in the radial direction.
上記各支持体２３は、その軸心端部をチャック取付は体
２１の軸心部に形成した軸穴２１ａ内に露出させ、この
軸心端部にボール２４を取付ける。また、外周端部をチ
ャック取付は体２１の外周部に形成した凹欠き部２１ｂ
に露出させ、この外周端部に係止アーム２５を取付ける
。The axial end of each of the supports 23 is exposed in the axial hole 21a formed in the axial center of the body 21 when the chuck is mounted, and the ball 24 is attached to this axial end. In addition, the outer circumferential end is attached to the chuck by a recessed notch 21b formed on the outer circumference of the body 21.
The locking arm 25 is attached to this outer peripheral end.
また、上記支持体２３は、係止ばね２６により軸心方向
に弾圧付勢する。この係止ばね２６は、第２図に示すよ
うに、支持体２３の軸方向中間部に固定したばね受け２
７と、凹欠き部２１ｂの外周端部に固定したばね押さえ
２８との間に介在させてなる。Further, the support body 23 is elastically biased in the axial direction by a locking spring 26. As shown in FIG.
7 and a spring retainer 28 fixed to the outer peripheral end of the recessed notch 21b.
係止アー４２５は、第１図に示すように、その右端部を
チャック取付は体２１がら右方（前方）に突出させると
ともに、その突出端部を軸心方向に屈曲させて爪２５ａ
を形成してなる。As shown in FIG. 1, the locking arm 425 has its right end protruded to the right (forward) from the chuck mounting body 21, and its protruding end is bent in the axial direction to engage the claw 25a.
It forms.
また、チャック取付は体２１の右面（前面）内周部にリ
ング状のカービックカップリング２９を固定し、このカ
ーピックカップリング２９の右面全周に放射状の凹凸歯
（ア）を形成する。Furthermore, the chuck is attached by fixing a ring-shaped curvic coupling 29 to the inner periphery of the right surface (front surface) of the body 21, and forming radial uneven teeth (A) on the entire periphery of the right surface of the curvic coupling 29.
３０は上記チャック取付は体２１の右方に同軸に取付け
た円板状の替えチャックである。Reference numeral 30 denotes a disk-shaped replacement chuck that is coaxially attached to the right side of the body 21.
この替えチャック３ｏは、左部外周に前述した係止アー
ム２５の爪２５ａが係合する環状のフランジ３０ａを形
成し、左面内局部にリング状の係合板、３１を固定し、
この係合板３１の左面全周に上記凹凸歯（ア）と係合す
る放射状の凹凸歯を形成し、右端部に小径かつ右方に向
がって小径となるテーパ面に形成した取付は軸３０ｂを
形成してなる。This replacement chuck 3o has an annular flange 30a that is engaged with the pawl 25a of the locking arm 25 described above on the outer periphery of the left side, and a ring-shaped engagement plate 31 is fixed to the inner part of the left side.
The engagement plate 31 has radial uneven teeth that engage with the uneven teeth (A) on the entire circumference of the left side of the engagement plate 31, and has a small diameter on the right end and a tapered surface that becomes smaller toward the right. 30b.
上記取付は軸３０ｂの外周に、周壁の大部分がスリット
により周方向に分断された円筒状のコレットチャック３
２をテーバ嵌合させる。The above mounting is done by attaching a cylindrical collet chuck 3 to the outer periphery of the shaft 30b, with most of the peripheral wall being divided in the circumferential direction by slits.
2 and taper-fit.
主軸２０、チャック取付は体２１および替えチャック３
０の軸心部に、ドローバ−３３、駆動腕３４および作動
ロッド３５を嵌合させる。Main shaft 20, chuck mounting body 21 and replacement chuck 3
The drawbar 33, the drive arm 34, and the actuating rod 35 are fitted into the axial center of the shaft.
ドローバ−３３は、油圧機構（図示省略）に連結され、
油路を切り替えるレバー（図示省略）を操作して左右動
されるようになっており、このドローバ−３３の右端部
に駆動腕３４を一体的に連結する。The drawbar 33 is connected to a hydraulic mechanism (not shown),
The drawbar 33 can be moved left and right by operating a lever (not shown) that switches the oil passage, and a drive arm 34 is integrally connected to the right end of the drawbar 33.
駆動腕３４は、大径に形成するとともに、その右端部に
前方に向がって縮小するテーパ面からなるカム面３４ａ
を形成してなる。The drive arm 34 is formed to have a large diameter, and has a cam surface 34a at its right end that is a tapered surface that decreases toward the front.
It forms.
作動ロッド３５は、その右端部にコレットチャック３２
の右端に当接する大径のフランジ３５ａを形成し、左端
に連結軸３６をねじ連結してなる。The operating rod 35 has a collet chuck 32 at its right end.
A large diameter flange 35a is formed to abut on the right end of the flange 35a, and a connecting shaft 36 is screwed to the left end.
上記連結軸３６は、その左部に括れ部３６ａを形成し、
この括れ部３６ ａ ｔｉ−駆動腕３４の軸心部に嵌合
させ、駆動腕３４に外周側から軸心方向に向けて嵌合し
た係止駒３７の軸心端部を上記括れ部３６ａに嵌入させ
て軸方向に離脱不能に連結する。The connecting shaft 36 has a constricted portion 36a on its left side,
The constricted portion 36a is fitted into the axial center of the drive arm 34, and the axial end of the locking piece 37, which is fitted into the drive arm 34 from the outer circumference toward the axial direction, is fitted into the constricted portion 36a. It is fitted in and connected irremovably in the axial direction.
この場合、軸孔２１ａは、支持体２３部位の内径を主軸
２０部位の内径に比し、段状に大径に形成し、駆動腕３
４が支持体２３の左方に位置する際に、係止駒３７の外
周端を軸孔２１ａの小径側の内周面に当接させて該係止
駒３７の半径方向外方への移動、つまり括れ部３６ａか
らの離脱を阻止し、また、駆動腕３４が支持体２３部位
に到来した際に、軸孔２１ａの大径側の内周面を係止駒
３７の外周端からｊｌ！ｔｒＩＩｊさせ、係止駒３７の
半径方向外方への移動、つまり括れ部３６ａからの離脱
を許容する。In this case, the shaft hole 21a is formed in a stepped manner with a larger diameter than the inner diameter of the support body 23 portion than the inner diameter of the main shaft 20 portion, and the drive arm 3
4 is located on the left side of the support body 23, the outer peripheral end of the locking piece 37 is brought into contact with the inner peripheral surface on the small diameter side of the shaft hole 21a, and the locking piece 37 is moved radially outward. In other words, when the driving arm 34 reaches the support body 23, the inner circumferential surface of the large diameter side of the shaft hole 21a is prevented from coming off from the constricted portion 36a. trIIj, thereby allowing the locking piece 37 to move radially outward, that is, to separate from the constricted portion 36a.
３８はドローバー３３を右方に弾圧する皿ばねからなる
復帰ばねであり、油圧機構のニュートラル時にドローバ
−３３を、駆動腕３４のカム面３４ａが支持体２３のボ
ール２４の直左方に位置するまで前進させるとともに１
作動ロッド３５の左方への緊張を解除してコレットチャ
ック３２を小径に弾性復帰させる。Reference numeral 38 denotes a return spring made of a disc spring that presses the drawbar 33 to the right, and when the hydraulic mechanism is in neutral, the cam surface 34a of the drive arm 34 is positioned directly to the left of the ball 24 of the support 23. 1.
The leftward tension of the operating rod 35 is released to elastically return the collet chuck 32 to its small diameter.
次に上記実施例の作動態様について説明する。Next, the operation mode of the above embodiment will be explained.
ドローバ−３３を復帰ばね３８に抗して油圧機構により
左方に引っ張ると、駆動腕３４を介して作動ロッド３５
が左方に移動し、コレットチャック３２が左方に押され
て大径に開作動され、これによりワーク（イ）を替えチ
ャック３０に固定する。When the drawbar 33 is pulled to the left by the hydraulic mechanism against the return spring 38, the actuating rod 35 is moved through the drive arm 34.
moves to the left, and the collet chuck 32 is pushed to the left to open to a larger diameter, thereby fixing the workpiece (A) to the chuck 30.
また、ドローバ−３３の左方への緊張を解除すると、復
帰ばね３８の反力により、駆動腕３４が支持体２３の直
前位置まで右方に移動され。Further, when the leftward tension of the drawbar 33 is released, the drive arm 34 is moved rightward to a position just in front of the support body 23 due to the reaction force of the return spring 38.
作動ロッド３５が右進してコレットチャック３２が自身
の弾性力により小径に閉作動し、ワーク（イ）の固定を
解除する。The actuating rod 35 moves to the right, and the collet chuck 32 closes to a small diameter due to its own elastic force, releasing the fixation of the workpiece (A).
次に、油圧機構によりドローバ−３３を太きく右方に移
動させると、駆動駒３４のカム面３４ａが支持体２３の
軸心端を半径方向外方に押圧し、支持体２３を介して係
止アーム２５を半径方向外方に移動させ、係止アーム２
５の爪２５ａが替えチャック３０のフランジ３０ａから
離脱し、替えチャック３０とチャック取付は体２１との
連結が解除されることになる。Next, when the drawbar 33 is moved sharply to the right by the hydraulic mechanism, the cam surface 34a of the drive piece 34 presses the axial end of the support body 23 outward in the radial direction, and engages via the support body 23. The locking arm 25 is moved radially outward, and the locking arm 2
5 detaches from the flange 30a of the replacement chuck 30, and the connection between the replacement chuck 30 and the chuck attachment body 21 is released.
同時に係止駒３７が支持体２３部位に到来して半径方向
外方への移動、つまり括れ部３６ａからの離脱が許容さ
れ、これにより、替えチャック３０をチャック取付は体
２１から右方に向けて離脱させることができる。At the same time, the locking piece 37 reaches the support body 23 and is allowed to move outward in the radial direction, that is, to separate from the constricted portion 36a. You can make them leave.
また、新規の替えチャック（３０）をチャック取付は体
２１の右面（前面）に同軸に配置し。In addition, a new replacement chuck (30) is installed coaxially on the right side (front) of the body 21.
係合板３１の凹凸歯をカービックカップリング２９の凹
凸歯（ア）に係合させるとともに、連結軸３６を駆動駒
３４の軸心部に嵌合させ、この状態でドローバ−３３を
油圧機構により左方に移動させると、駆動駒３４のカム
面３４ａが支持体２３から左方に退避し、支持体２３が
係止ばね２６の反力により、軸心方向に移動され、係止
アーム２５が軸心方向に移動してその爪２５ａが上記替
えチャック（３０）のフランジ３０ａに係合する。The concave and convex teeth of the engagement plate 31 are engaged with the concave and convex teeth (A) of the curvic coupling 29, and the connecting shaft 36 is fitted to the axial center of the drive piece 34, and in this state, the drawbar 33 is moved by the hydraulic mechanism. When moved to the left, the cam surface 34a of the drive piece 34 retreats from the support body 23 to the left, the support body 23 is moved in the axial direction by the reaction force of the locking spring 26, and the locking arm 25 is moved. The claw 25a moves in the axial direction and engages with the flange 30a of the replacement chuck (30).
同時に駆動駒３４が支持体２３の左方に移動し、係止駒
３７が軸孔２１ａの小径側の内周面により軸心方向に移
動してその軸心端部が括れ部３６ａ内に嵌合し、これに
より、替えチャック（３０）がチャック取付は体２１に
連結されることになる。At the same time, the driving piece 34 moves to the left of the support body 23, and the locking piece 37 moves in the axial direction by the inner peripheral surface on the small diameter side of the shaft hole 21a, so that the axial end thereof is fitted into the constricted part 36a. As a result, the replacement chuck (30) is connected to the chuck mounting body 21.
（発明の効果）
以上の説明から明らかな如く、本発明によれば、連結装
置の係止アームを、チャック取付は体内に設けた係止ば
ねと、チャック取付は体の軸心部で軸方向に移動する駆
動駒とにより半径方向に移動させるようにしたので、外
径が縮小するとともに、連結装置の操作が簡素になる効
果を奏する。(Effects of the Invention) As is clear from the above description, according to the present invention, the locking arm of the coupling device is attached to the chuck by a locking spring provided inside the body, and the chuck is attached in the axial direction at the axial center of the body. Since the drive piece is moved in the radial direction, the outer diameter is reduced and the operation of the coupling device is simplified.
第１図は本発明の実施例を示す断面図、第２図はその■
−■線による部分断面図、第３図は従来例を示す部分断
面図である。
２０：主軸、２１：チャック取付は体、２１ａ軸孔、２
１ｂ：凹欠き部、２２：連結装置、２３：支持体、２４
：ボール、２５：係止アーム、２５ａ：爪、２６：係止
ばね、２７：ばね受け、２８：ばね押さえ、２９：カー
ビックカップリング、３０：替えチャック、３０ａ：フ
ランジ、３０ｂ＝取付は軸、３１：係合板、３２：コレ
ットチャック、３３ニドローバー ３４＝駆動駒、３４
ａ：カム面、３５：作動ロッド、３５ａ：フランジ、３
６：連結軸、３６ａ：括れ部、３７：係止駒、３８：復
帰ばね、（ア）：凹凸歯、（イ）：ワーク。
出頴代理人
松本
久Fig. 1 is a sectional view showing an embodiment of the present invention, and Fig. 2 is a cross-sectional view showing an embodiment of the present invention.
FIG. 3 is a partial sectional view taken along the line -■, and FIG. 3 is a partial sectional view showing a conventional example. 20: Main shaft, 21: Chuck mounting body, 21a shaft hole, 2
1b: recessed notch, 22: connecting device, 23: support, 24
: Ball, 25: Locking arm, 25a: Claw, 26: Locking spring, 27: Spring holder, 28: Spring holder, 29: Curvic coupling, 30: Replacement chuck, 30a: Flange, 30b = Mounting is on shaft , 31: Engagement plate, 32: Collet chuck, 33 Ni draw bar 34 = Drive piece, 34
a: cam surface, 35: operating rod, 35a: flange, 3
6: Connection shaft, 36a: Narrow portion, 37: Locking piece, 38: Return spring, (A): Uneven tooth, (B): Work. Candy agent Hisashi Matsumoto
Claims (1)
動してコレットチャックを開閉させる作動ロッドを有す
る替えチャックを設け、替えチャックをチャック取付け
体の前部に着脱可能に連結する連結装置を設けてなる替
えチャックの連結装置において、連結装置は、チャック
取付け体に放射状に嵌合し、かつ係止ばねにより軸心方
向に弾圧されてその軸心端部がチャック取付け体の軸孔
内に突出する複数個の支持体と、各支持体に固定され、
かつ替えチャックの外周部に半径方向外方から係止する
係止アームと、チャック取付け体の軸心部に嵌合してド
ローバーと作動ロッドとを連結し、かつ外周部にドロー
バーの前進時に支持体の軸心部を半径方向外方に押圧す
るカム面を有する駆動駒と、駆動駒をそのカム面が支持
体の直前に位置するまで前進方向に弾圧する復帰ばねと
を有してなる替えチャックの連結装置。1. A collet chuck is installed in the front part, a replacement chuck is provided with an operating rod that reciprocates in the axial direction to open and close the collet chuck in the axial center, and the replacement chuck is removably connected to the front part of the chuck mounting body. In the connecting device for a replacement chuck, the connecting device is fitted radially into the chuck attaching body, and is pressed in the axial direction by a locking spring so that the axial end of the connecting device is connected to the shaft hole of the chuck attaching body. a plurality of supports protruding inward; fixed to each support;
A locking arm that locks onto the outer periphery of the replacement chuck from the outside in the radial direction, and a locking arm that fits into the axial center of the chuck mounting body to connect the drawbar and the actuating rod, and a locking arm that supports the drawbar when it moves forward. A drive piece having a cam surface that presses the axial center of the body radially outward, and a return spring that presses the drive piece in the forward direction until the cam surface is located just in front of the support body. Chuck connection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1258550A JP2548990B2 (en) | 1989-10-03 | 1989-10-03 | Replacement chuck connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1258550A JP2548990B2 (en) | 1989-10-03 | 1989-10-03 | Replacement chuck connecting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03121706A true JPH03121706A (en) | 1991-05-23 |
| JP2548990B2 JP2548990B2 (en) | 1996-10-30 |
Family
ID=17321790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1258550A Expired - Lifetime JP2548990B2 (en) | 1989-10-03 | 1989-10-03 | Replacement chuck connecting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2548990B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011016196A (en) * | 2009-07-09 | 2011-01-27 | Murata Machinery Ltd | Coupling device |
| CN102554299A (en) * | 2010-12-15 | 2012-07-11 | 贺自清 | Self-centering power chuck for swing rod |
| WO2017022118A1 (en) * | 2015-08-06 | 2017-02-09 | 富士機械製造株式会社 | Chuck device |
-
1989
- 1989-10-03 JP JP1258550A patent/JP2548990B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011016196A (en) * | 2009-07-09 | 2011-01-27 | Murata Machinery Ltd | Coupling device |
| CN102554299A (en) * | 2010-12-15 | 2012-07-11 | 贺自清 | Self-centering power chuck for swing rod |
| WO2017022118A1 (en) * | 2015-08-06 | 2017-02-09 | 富士機械製造株式会社 | Chuck device |
| JPWO2017022118A1 (en) * | 2015-08-06 | 2018-05-24 | 株式会社Ｆｕｊｉ | Chuck device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2548990B2 (en) | 1996-10-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4721190A (en) | Mechanical actuating device for spot-type disc brakes | |
| US5423515A (en) | Socket of pipe joint | |
| JPH04226820A (en) | Drill chuck | |
| US4715553A (en) | Roll core holding device | |
| JP2008531301A (en) | Clamping device | |
| US4727967A (en) | Parking mechanism of a transmission | |
| JP2005133930A (en) | Brake device comprising automatic gap adjusting mechanism with over-adjustment prevention | |
| JPH03121706A (en) | Coupling device for exchange chuck | |
| US2305302A (en) | Fluid pressure brake apparatus | |
| JPS6336175Y2 (en) | ||
| JP5337009B2 (en) | Tool holder holder | |
| US3494565A (en) | Bobbin chuck | |
| JP2001121374A (en) | Tool holder holding device | |
| CZ295800B6 (en) | Release unit of a device for controlling chucking head and method of securing a workpiece or tool through the mediation of such a chucking head | |
| US4964586A (en) | Releasable holding device for cores | |
| GB2150241A (en) | Disc brake device automatic adjustment | |
| JPH0332508A (en) | Tool installing/detaching mechanism | |
| US4785717A (en) | Brake actuation unit with slack adjustment | |
| JP3699196B2 (en) | Disc brake | |
| JPH0641772Y2 (en) | Collet chuck operating rod connecting device | |
| JPH07106520B2 (en) | Tool holder automatic locking device for tool pot | |
| JPH0356661Y2 (en) | ||
| JPH11132267A (en) | Automatic adjusting device for pad clearance of disk brake | |
| JPH01177937A (en) | Automatic mounting/demounting structure for turret type magazine and the like | |
| JPH01164825A (en) | Disc brake |