JPH0479764B2 - - Google Patents
Info
- Publication number
- JPH0479764B2 JPH0479764B2 JP59059950A JP5995084A JPH0479764B2 JP H0479764 B2 JPH0479764 B2 JP H0479764B2 JP 59059950 A JP59059950 A JP 59059950A JP 5995084 A JP5995084 A JP 5995084A JP H0479764 B2 JPH0479764 B2 JP H0479764B2
- Authority
- JP
- Japan
- Prior art keywords
- tool
- holding
- pawl
- pulling rod
- detachment prevention
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/24—Chucks characterised by features relating primarily to remote control of the gripping means
- B23B31/26—Chucks characterised by features relating primarily to remote control of the gripping means using mechanical transmission through the working-spindle
- B23B31/261—Chucks characterised by features relating primarily to remote control of the gripping means using mechanical transmission through the working-spindle clamping the end of the toolholder shank
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2231/00—Details of chucks, toolholder shanks or tool shanks
- B23B2231/52—Chucks with means to loosely retain the tool or workpiece in the unclamped position
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
- Gripping On Spindles (AREA)
Description
【発明の詳細な説明】 本発明は、工具着脱保持装置に関する。[Detailed description of the invention] The present invention relates to a tool attachment/detachment/holding device.
従来、この種工具着脱保持装置の先行技術とし
て特開昭58−56745号公報等が挙げられる。 Conventionally, Japanese Patent Laid-Open No. 58-56745 and the like are cited as prior art for this type of tool attachment/detachment/holding device.
この先行技術の構造を説明すると、中空主軸の
前端部にテーパ状の保持孔を形成し、かつ中空主
軸に引寄ロツドを軸方向押引移動自在に内装し、
この引寄ロツドの前端部に保持爪を放射状に配設
し、前記引寄ロツドの前進押移動で前記保持爪は
開動作し、該引寄ロツドの後退引移動で該保持爪
が閉動作するように構成し、前記保持孔に工具の
シヤンク部を嵌合すると共に該工具のプルスタツ
ドを前記保持爪の閉動作によつて引寄せて該工具
を前記中空主軸に着脱自在に保持するようにした
ものである。 To explain the structure of this prior art, a tapered holding hole is formed at the front end of a hollow main shaft, and a pulling rod is installed inside the hollow main shaft so that it can be moved freely by pushing and pulling in the axial direction.
Holding claws are arranged radially at the front end of this pulling rod, and when the pulling rod moves forward, the holding claws open, and when the pulling rod moves backward, the holding claws close. The shank portion of the tool is fitted into the holding hole, and the pull stud of the tool is pulled by the closing action of the holding claw, so that the tool is detachably held on the hollow main shaft. It is something.
しかしながら、上記先行技術の場合、上記保持
爪が工具のプルスタツドを解放すると、該工具は
完全に自由状態となり、この結果、工具が自重又
は他の振動等によつて抜脱することがあり、当該
工具は落下し、不測の事態が生じることがあつ
た。 However, in the case of the above-mentioned prior art, when the holding pawl releases the pull stud of the tool, the tool becomes completely free, and as a result, the tool may be pulled out due to its own weight or other vibrations, etc. Tools could fall and unforeseen situations could occur.
本発明はこれらの不都合を解消することのでき
る工具着脱保持装置を提供しようとするものであ
る。 The present invention aims to provide a tool attachment/detachment/holding device that can eliminate these inconveniences.
以下、本発明の要旨を添付図面につき説明す
る。 Hereinafter, the gist of the present invention will be explained with reference to the accompanying drawings.
本装置は、中空主軸１の前端部にテーパ状の保
持孔２を形成し、かつ中空主軸１に引寄ロツド３
を軸方向押引移動自在に内装し、該引寄ロツド３
の前端部に複数の保持爪４を放射状に配設し、前
記引寄ロツド３の前進押移動で前記保持爪４が開
動作し、該引寄ロツド３の後退引移動で該保持爪
４が閉動作するように構成し、前記保持孔２に工
具５のシヤンク部６を嵌合すると共に該工具５の
プルスタツド７を前記保持爪４の閉動作によつて
引寄せ、該工具５を前記中空主軸１に着脱自在に
保持するものにおいて、上記複数の保持爪４の間
に、上記工具５が該保持爪４より解放されても該
工具５のプルスタツド７に係止して該工具５の離
脱を防止する離脱防止爪８を上記保持爪４同様放
射状に配設し、該離脱防止爪８に係止されている
工具５を引動することで該工具５と該離脱防止爪
８との係合が解放されるように該離脱防止爪８に
所定の弾性を付与せしめたことを特徴とする工具
離脱保持装置である。 This device has a tapered holding hole 2 formed at the front end of a hollow main shaft 1, and a drawing rod 3 attached to the hollow main shaft 1.
is internally movable in the axial direction, and the pulling rod 3
A plurality of holding claws 4 are arranged radially at the front end of the holding claw 4, and when the pulling rod 3 moves forward, the holding claws 4 open, and when the pulling rod 3 moves backward, the holding claws 4 open. The shank portion 6 of the tool 5 is fitted into the holding hole 2, and the pull stud 7 of the tool 5 is pulled by the closing action of the holding claw 4, so that the tool 5 is closed in the hollow. In a device that is detachably held on the main shaft 1, the tool 5 is held between the plurality of holding claws 4 even if the tool 5 is released from the holding claws 4, it is locked to the pull stud 7 of the tool 5 and the tool 5 is removed. Separation prevention claws 8 are arranged radially like the above-mentioned holding claws 4, and by pulling the tool 5 locked to the separation prevention claws 8, the tool 5 and the separation prevention claws 8 are engaged. This is a tool detachment/holding device characterized in that a predetermined elasticity is imparted to the detachment prevention pawl 8 so that the detachment prevention pawl 8 is released.
更に本実施例につき具体的に説明する。 Further, this example will be specifically explained.
第１図乃至第３図は第１実施例を示し、第４図
は第２実施例を示している。 1 to 3 show a first embodiment, and FIG. 4 shows a second embodiment.
まず、第１実施例を説明する。 First, a first example will be described.
本実施例の中空主軸１は主軸台９にベアリング
１０により回転自在に内装され、この中空主軸１
に歯車１１をキー１２により固定し、この歯車１
１を介して駆動モータ（図示省略）等によつて中
空主軸１を回転するようにしている。 The hollow main shaft 1 of this embodiment is rotatably installed in a headstock 9 with a bearing 10.
The gear 11 is fixed with the key 12, and this gear 1
1, the hollow main shaft 1 is rotated by a drive motor (not shown) or the like.
また、本実施例では、前記引寄ロツド３の後部
に径大部１３を形成し、後端部を中空主軸１より
突出し、この径大部１３に複数枚の皿バネ１４を
当接し、引寄ロツド３を後退引動付勢するように
し、かつ、前記主軸台９の後面に突出用シリンダ
１５を取付け、この突出用シリンダ１５の押ポー
ト１６に圧油を送入し、ピストン１７を突出動作
し、引寄ロツド３を前進押動し、また引ポート１
８に圧油を送入し、ピストン１７を後退動作し、
引寄ロツド３を皿バネ１４により後退し、よつて
前記引寄ロツド３を軸方向押引移動自在にしてい
る。 Furthermore, in this embodiment, a large-diameter portion 13 is formed at the rear of the pulling rod 3, the rear end protrudes from the hollow main shaft 1, and a plurality of disc springs 14 are brought into contact with the large-diameter portion 13. The stop rod 3 is urged to move backward, and an ejection cylinder 15 is attached to the rear surface of the headstock 9, and pressure oil is supplied to the push port 16 of the ejection cylinder 15 to cause the piston 17 to eject. Then, push the pulling rod 3 forward and move the pulling port 1 again.
8, the piston 17 is moved backward,
The pulling rod 3 is retracted by a disc spring 14, thereby making the pulling rod 3 freely movable in the axial direction.
また、本実施例の保持爪４は６個で成り、前記
引寄ロツド３の前部に係合溝１９を形成し、この
係合溝１９に保持爪４後部内面の係合突起２０を
嵌合し、かつ保持爪４を開動作するバネ２１を配
設し、中空主軸１内周面にして保持爪４の周囲に
スリーブ２２を配設し、該スリーブ２２の内周面
形状を、前記引寄ロツド３の前進位置では第１図
の如く、保持爪４前端部がスリーブ２２前端縁よ
り外れ突出し、バネ２１により係合突起２０中心
で開動作し、また、引寄ロツド３の後退位置では
保持爪４前端部外面がスリーブ２２内周面に係合
し、閉動作するような形状にしている。 Further, the holding claws 4 of this embodiment consist of six pieces, and an engagement groove 19 is formed in the front part of the pulling rod 3, and an engagement protrusion 20 on the rear inner surface of the holding claw 4 is fitted into this engagement groove 19. A spring 21 is disposed to open the retaining claw 4, and a sleeve 22 is disposed around the retaining claw 4 on the inner peripheral surface of the hollow main shaft 1. When the pulling rod 3 is in the forward position, as shown in FIG. In this case, the outer surface of the front end of the holding claw 4 is shaped so that it engages with the inner peripheral surface of the sleeve 22 and performs a closing operation.
また、保持爪４の前端部にはプルスタツド７を
引寄せる引掛部２３を形成している。 Furthermore, a hook portion 23 for pulling the pull stud 7 is formed at the front end of the holding claw 4.
また、本実施例の離脱防止爪８は、いわゆるス
プリングコレツトに形成され、その基部は前記ス
リーブ２２と皿バネ１４との間に介在され、かつ
第３図の如く、前記保持爪４の間に６個介在位置
され、その前端部に支持部２４を形成したもので
ある。 Further, the detachment prevention pawl 8 of this embodiment is formed as a so-called spring collet, the base of which is interposed between the sleeve 22 and the disc spring 14, and is located between the retaining pawl 4 as shown in FIG. 6 pieces are interposed between each other, and a support part 24 is formed at the front end of the support part 24.
本第１実施例は、上記構成であるから、前記引
寄ロツド３を突出用シリンダ１５によつて押動前
進し、第１図の如く保持爪４をバネ２１により開
動作し、この状態で工具５を中空主軸１内に挿入
し、シヤンク部６を保持孔２に当接する。 Since the first embodiment has the above structure, the pulling rod 3 is pushed forward by the ejecting cylinder 15, the holding claw 4 is opened by the spring 21 as shown in FIG. The tool 5 is inserted into the hollow main shaft 1, and the shank portion 6 is brought into contact with the holding hole 2.
そして、突出用シリンダ１５を後退し、引寄ロ
ツド３を皿バネ１４によつて後退引動移動し、よ
つて保持爪４を閉動し、そのまま保持爪４の引掛
部２３でプルスタツド７を引寄せ、第２図の如
く、工具５を中空主軸１に保持する。 Then, the ejecting cylinder 15 is moved backward, the pulling rod 3 is moved backward by the disc spring 14, the holding claw 4 is moved to close, and the pull stud 7 is pulled by the hook 23 of the holding claw 4. , as shown in FIG. 2, the tool 5 is held on the hollow main shaft 1.
また、突出用シリンダ１５によつて引寄ロツド
３を押動前進し、保持爪４の引掛部２３をプルス
タツド７より離反し、かつバネ２１により保持爪
４を開動作する。 Further, the pulling rod 3 is pushed forward by the protrusion cylinder 15, the hook portion 23 of the holding pawl 4 is separated from the pull stud 7, and the holding pawl 4 is opened by the spring 21.
このとき、工具５は保持爪４より解放され、自
由状態となるが、前記離脱防止爪８がプルスタツ
ド７を支持し、自重、振動等による抜離脱が防止
される。 At this time, the tool 5 is released from the holding claw 4 and becomes free, but the detachment prevention claw 8 supports the pull stud 7 and prevents it from being pulled out due to its own weight, vibration, etc.
そして、工具５を強制的に引張ればスプリング
コレツト状の離脱防止爪８は開動作し、工具５は
抜脱される。 When the tool 5 is forcibly pulled, the spring-collected detachment prevention pawl 8 is opened, and the tool 5 is removed.
第４図の第２実施例を説明する。 The second embodiment shown in FIG. 4 will be explained.
この第２実施例のものも第１実施例のものと略
略同一構造のもので、同一態様部分には同符号を
付して説明を省略する。 The second embodiment also has substantially the same structure as the first embodiment, and the same parts are given the same reference numerals and the explanation thereof will be omitted.
この第２実施例の相異点は、第１実施例の離脱
防止爪８を強制的手段によつて開動作するように
した点である。 The difference between the second embodiment and the first embodiment is that the detachment prevention claw 8 of the first embodiment is opened by forced means.
すなわち、前記引寄ロツド３の外周面に操作ス
リーブ２５をスライド自在に外嵌し、一方離脱防
止爪８の内周面に受持部２６を形成し、操作スリ
ーブ２５をシリンダ機構（図示省略）等によつて
押動前進し、その前端部を受持部２６に圧接し、
よつて離脱防止爪８を開動作し、プルスタツド７
を完全解放するようにしたものである。 That is, the operating sleeve 25 is slidably fitted on the outer circumferential surface of the pulling rod 3, and the receiving part 26 is formed on the inner circumferential surface of the detachment prevention claw 8, and the operating sleeve 25 is attached to a cylinder mechanism (not shown). or the like, and press its front end against the support part 26,
Then, the detachment prevention claw 8 is opened, and the pull stud 7 is opened.
It was designed to completely release the
尚、前記離脱防止爪８はスプリングコレツト状
の実施例のものの他に、本実施例の保持爪の如
く、バネによつて開動作する形状のものにも適用
できる。 In addition to the spring collet-shaped embodiment, the detachment prevention claw 8 can also be applied to a shape that is opened by a spring, like the holding claw of this embodiment.
本発明は、上述の如く、上記工具５のプルスタ
ツド７を引寄せる保持爪４の近傍位置に、保持爪
４の間に該工具５が該保持爪４より解放されても
該工具５のプルスタツド７が係止して該工具５の
離脱を防止する離脱防止爪８を配設したから、保
持爪４がプルスタツド７を解放しても離脱防止爪
８はプルスタツド７の離脱を防止し、したがつ
て、工具５の自重又は他の振動等による工具５の
離脱が未然に防止でき、これに伴う不測の事態を
回避することができる。 As described above, the present invention provides that the pull stud 7 of the tool 5 is placed in a position near the holding claw 4 that draws the pull stud 7 of the tool 5 between the holding claws 4 even when the tool 5 is released from the holding claw 4. Since the detachment prevention claw 8 is provided to lock the tool 5 and prevent the tool 5 from detaching, even if the holding claw 4 releases the pull stud 7, the detachment prevention claw 8 prevents the pull stud 7 from detaching. , separation of the tool 5 due to its own weight or other vibrations can be prevented, and unforeseen situations associated with this can be avoided.
そして、離脱防止爪８に係止されている工具５
を離脱させるには該離脱防止爪８の弾性に抗して
引動するだけで良いから作業性が極めて良好とな
る。 The tool 5 that is locked to the detachment prevention claw 8
In order to detach the detachment prevention claw 8, it is only necessary to drag it against the elasticity of the detachment prevention claw 8, so that the workability is extremely good.
図面は本発明の一実施例を示すもので、第１図
は第１実施例の縦断面図、第２図はその動作状態
図、第３図はその横断面図、第４図は第２実施例
の縦断面図である。
１……中空主軸、２……保持孔、３……引寄ロ
ツド、４……保持爪、５……工具、６……シヤン
ク部、７……プルスタツド、８……離脱防止爪、
９……主軸台。
The drawings show one embodiment of the present invention; FIG. 1 is a longitudinal cross-sectional view of the first embodiment, FIG. 2 is a diagram of its operating state, FIG. 3 is a cross-sectional view thereof, and FIG. FIG. 3 is a longitudinal cross-sectional view of the embodiment. 1... Hollow main shaft, 2... Holding hole, 3... Pulling rod, 4... Holding claw, 5... Tool, 6... Shank part, 7... Pull stud, 8... Separation prevention claw,
9... Headstock.
Claims (1)
し、かつ中空主軸に引寄ロツドを軸方向押引移動
自在に内装し、該引寄ロツドの前端部に複数の保
持爪を放射状に配設し、前記引寄ロツドの前進押
移動で前記保持爪が開動作し、該引寄ロツドの後
退引移動で該保持爪が閉動作するように構成し、
前記保持孔に工具のシヤンク部を嵌合すると共に
該工具のプルスタツドを前記保持爪の閉動作によ
つて引寄せ、該工具を前記中空主軸に着脱自在に
保持するものにおいて、上記複数の保持爪の間
に、上記工具が該保持爪より解放されても該工具
のプルスタツドに係止して該工具の離脱を防止す
る離脱防止爪を上記保持爪同様放射状に配設し、
該離脱防止爪に係止されている工具を引動するこ
とで該工具と該離脱防止爪との係合が解放される
ように該離脱防止爪に所定の弾性を付与せしめた
ことを特徴とする工具離脱保持装置。1. A tapered holding hole is formed in the front end of the hollow main shaft, and a pulling rod is installed inside the hollow main shaft so as to be movable in the axial direction, and a plurality of holding claws are arranged radially at the front end of the pulling rod. and configured such that the forward pushing movement of the pulling rod causes the holding pawl to open, and the backward movement of the pulling rod causes the holding pawl to close,
The tool is removably held on the hollow main shaft by fitting the shank portion of the tool into the holding hole and pulling the pull stud of the tool by the closing action of the holding pawl, wherein the plurality of holding pawls In between, detachment prevention claws are disposed radially like the holding claws to lock onto the pull stud of the tool and prevent the tool from coming off even if the tool is released from the holding claws,
A predetermined elasticity is imparted to the detachment prevention pawl so that the engagement between the tool and the detachment prevention pawl is released by pulling the tool locked to the detachment prevention pawl. Tool release holding device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5995084A JPS60201848A (en) | 1984-03-27 | 1984-03-27 | Tool attaching, removing and holding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5995084A JPS60201848A (en) | 1984-03-27 | 1984-03-27 | Tool attaching, removing and holding device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60201848A JPS60201848A (en) | 1985-10-12 |
| JPH0479764B2 true JPH0479764B2 (en) | 1992-12-16 |
Family
ID=13127929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5995084A Granted JPS60201848A (en) | 1984-03-27 | 1984-03-27 | Tool attaching, removing and holding device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60201848A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62138513U (en) * | 1986-02-26 | 1987-09-01 | ||
| JPS62203703A (en) * | 1986-02-28 | 1987-09-08 | Riken Seiki Kk | Tool holder |
| JPS6335545U (en) * | 1986-08-21 | 1988-03-07 | ||
| JPS6357132A (en) * | 1986-08-25 | 1988-03-11 | Makino Milling Mach Co Ltd | Spindle clamping device |
| JPS6376405U (en) * | 1986-11-10 | 1988-05-20 | ||
| JPH0236649Y2 (en) * | 1987-05-29 | 1990-10-04 | ||
| JPH10277862A (en) * | 1997-04-03 | 1998-10-20 | Sodick Co Ltd | Tool holder and tool holding device of metalcutting machine tool |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6033616B2 (en) * | 1976-07-30 | 1985-08-03 | 日立精機株式会社 | Tool spindle that can be used with both large and small diameter tools |
-
1984
- 1984-03-27 JP JP5995084A patent/JPS60201848A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60201848A (en) | 1985-10-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |