JPH0121688Y2 - - Google Patents
Info
- Publication number
- JPH0121688Y2 JPH0121688Y2 JP1984194014U JP19401484U JPH0121688Y2 JP H0121688 Y2 JPH0121688 Y2 JP H0121688Y2 JP 1984194014 U JP1984194014 U JP 1984194014U JP 19401484 U JP19401484 U JP 19401484U JP H0121688 Y2 JPH0121688 Y2 JP H0121688Y2
- Authority
- JP
- Japan
- Prior art keywords
- chuck
- tube
- deep hole
- elastic
- chuck tube
- 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
Landscapes
- Gripping On Spindles (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
この考案は、工具を強固かつ安定して均等な締
付け力で締付固定することを目的としたチヤツク
に関するものであつて、チヤツク（コレツトチヤ
ツク）を製造使用する分野で利用されるものであ
る。[Detailed description of the invention] (Field of industrial application) This invention relates to a chuck for the purpose of firmly and stably tightening and fixing a tool with uniform tightening force. It is used in the field of manufacturing and using.
（従来の技術）
この種のチヤツクにおいては、工具の把持力を
高めるためにチヤツク筒の弾性変形を大きくする
必要がある。係る要求に答える為、従来チヤツク
筒の肉厚を薄くしたものが用いられているが、肉
厚を薄くすると剛性が小さくなり、使用時にふれ
が生じる場合があつた。(Prior Art) In this type of chuck, it is necessary to increase the elastic deformation of the chuck barrel in order to increase the gripping force of the tool. In order to meet such demands, chuck tubes with thinner wall thicknesses have been used in the past, but thinning the wall thickness reduces rigidity, which sometimes causes wobbling during use.
係る欠点を解決するものとして、チヤツク筒を
肉厚とし、チヤツク筒に軸方向の深穴を複数設け
たものが提案されている（実開昭56−7260号）。 In order to solve this problem, it has been proposed to make the chuck tube thicker and to provide a plurality of deep holes in the axial direction (Utility Model Application No. 7260/1983).
（考案が解決すべき問題点）
上記の構造によれば、剛性については問題は無
いが工具との当接面に均等な締付力が及ぶか否か
の点で未だ不十分であつた。また深穴対応部分の
周壁が肉薄となるので該部が永久変形するおそれ
もあつた。(Problems to be solved by the invention) According to the above structure, although there is no problem in terms of rigidity, it is still insufficient in terms of whether or not an even tightening force is applied to the contact surface with the tool. Furthermore, since the peripheral wall of the portion corresponding to the deep hole became thin, there was a risk that the portion would be permanently deformed.
（問題点を解決する為の手段）
この考案のチヤツクは、コレツトチヤツクであ
つて、チヤツク筒にその先端から基部へ向けて所
定深さの環状深穴を前記チヤツク筒の内周と同心
円的に設けると共に、前記深穴へ弾性体を充填し
て構成してある。(Means for Solving the Problems) The chuck of this invention is a collect chuck, in which a deep annular hole of a predetermined depth is provided in the chuck tube from its tip to its base, concentrically with the inner periphery of the chuck tube. In addition, the deep hole is filled with an elastic body.
前記深穴はチヤツク筒の先端からニードルロー
ラーとの接触部を越えて設けることが好ましい。
前記弾性体の材質としては、例えばゴム又は弾性
の大きな合成樹脂等が考えられる。 It is preferable that the deep hole is provided from the tip of the chuck tube beyond the contact area with the needle roller.
The material of the elastic body may be, for example, rubber or a synthetic resin with high elasticity.
（考案の作用）
この考案における弾性体は、深穴対応部分にお
けるチヤツク筒壁を弾性力で支持する。然してチ
ヤツク筒は適度の剛性を保持すると共に弾性変形
が容易で、しかも深穴部分における締付力が全周
に亘り均等にチヤツク筒内周に伝わる。また弾性
体はチヤツク筒深穴部分の永久変形を防止する作
用も有する。(Function of the invention) The elastic body in this invention supports the chuck cylinder wall in the portion corresponding to the deep hole with elastic force. As a result, the chuck tube maintains appropriate rigidity and is easily elastically deformed, and the tightening force in the deep hole portion is evenly transmitted to the inner periphery of the chuck tube over the entire circumference. The elastic body also has the function of preventing permanent deformation of the deep hole portion of the chuck tube.
以下この考案を図面に示す実施例に基いて説明
する。 This invention will be explained below based on embodiments shown in the drawings.
（実施例）
一端部を小径としたテーパー壁を有するチヤツ
ク本体１の他端に、先端外周を小径としたテーパ
ー壁を有するチヤツク筒２の基端が連設してあ
り、前記チヤツク筒２の外周には保持筒３で保持
された多数のニードルローラー４を介して締付筒
５が回転自在に嵌装してある。前記締付筒５の内
周面は前記チヤツク筒２の外周面と平行なテーパ
ー面として、前記締付筒５を回転し、これを軸方
向に移動することにより、前記チヤツク筒２を内
側へ弾性変形させ工具を締付け得るようにしてあ
る。(Embodiment) A base end of a chuck tube 2 having a tapered wall with a small diameter at the outer periphery of the tip is connected to the other end of a chuck body 1 having a tapered wall with a small diameter at one end. A tightening cylinder 5 is rotatably fitted on the outer periphery via a large number of needle rollers 4 held by a holding cylinder 3. The inner circumferential surface of the tightening tube 5 is a tapered surface parallel to the outer circumferential surface of the chuck tube 2, and by rotating the tightening tube 5 and moving it in the axial direction, the chuck tube 2 can be moved inward. It is designed to be elastically deformed so that the tool can be tightened.
前記チヤツク筒２の周壁は肉厚であつて、該周
壁内へ環状深穴６が穿設してあり、該環状深孔６
には弾性体（例えばゴム）７が充填してある。前
記環状深穴６は、前記チヤツク筒２の先端からチ
ヤツク筒２がニードルローラー４と接触する部分
を越えて基端部に達している。図中８はフエルト
リング、９は保持筒３を押さえるスナツプリング
である。 The circumferential wall of the chuck tube 2 is thick, and a deep annular hole 6 is bored in the circumferential wall.
is filled with an elastic body (for example, rubber) 7. The annular deep hole 6 extends from the tip of the chuck tube 2 to the base end beyond the portion where the chuck tube 2 contacts the needle roller 4. In the figure, 8 is a felt ring, and 9 is a snap spring that holds down the holding cylinder 3.
次に上記実施例に示すチヤツクの作用を説明す
る。 Next, the operation of the chuck shown in the above embodiment will be explained.
チヤツク筒２の内腔１０へ工具の基部を嵌挿
し、次いで締付筒５を第１図矢示１１方向へ回転
させると、締付筒５は第２図矢示１２方向移動
し、これに伴ないチヤツク筒２は中心方向へ加圧
されて内側へ弾性変形し、前記工具はチヤツク筒
２によつて挟着される。 When the base of the tool is inserted into the inner cavity 10 of the chuck tube 2 and the tightening tube 5 is then rotated in the direction of arrow 11 in FIG. 1, the tightening tube 5 moves in the direction of arrow 12 in FIG. As a result, the chuck tube 2 is pressurized toward the center and elastically deforms inward, and the tool is clamped by the chuck tube 2.
上記において、チヤツク筒２には環状深穴６を
設けてあるので、チヤツク筒２は比較的容易に弾
性変形し、また環状深穴６には弾性体７を充填し
てあるのでチヤツク筒壁が深穴対応部で肉薄であ
るにもかかわらず大きな弾性力で支持されてお
り、全面的に均等に締付け力が働き、工具を強固
に挟着することができると共に、チヤツク筒は肉
厚であるから十分な剛性を得ることができ、強い
力を加えた場合にも工具が振れるおそれがない。 In the above, since the chuck tube 2 is provided with the annular deep hole 6, the chuck tube 2 is elastically deformed relatively easily, and since the annular deep hole 6 is filled with an elastic body 7, the chuck tube wall is Despite being thin at the deep hole compatible part, it is supported by a large elastic force, and the tightening force works evenly over the entire surface, making it possible to firmly clamp the tool, and the chuck tube is thick. Sufficient rigidity can be obtained from this, and there is no risk of the tool swinging even when strong force is applied.
（考案の効果）
この考案によれば、肉厚のチヤツク筒に環状深
穴を設けたので、十分な剛性と共に比較的小さな
力で大きな弾性変形を得ることができる。そして
前記環状深穴には弾性体が充填してあるので、チ
ヤツク筒壁の深穴対応部は弾性力で支持されてお
り、大きな締付力を得ることができ、チヤツク筒
の締付力は全周に亘りほぼ均等となる。またチヤ
ツク筒壁の深穴対応部に局部的な力がかかつた場
合にも、該部が永久変形するおそれがない。更に
深穴部分は弾性体で保強されるので、前記実開昭
56−72609号のチヤツク筒と同じ剛性をもたせる
場合には、実開昭56−72609号のものよりもチヤ
ツク筒の肉厚を薄くすることができ、加工上優利
である。(Effects of the invention) According to this invention, since the thick chuck tube is provided with an annular deep hole, it is possible to obtain sufficient rigidity and large elastic deformation with a relatively small force. Since the annular deep hole is filled with an elastic body, the part of the chuck tube wall corresponding to the deep hole is supported by the elastic force, and a large tightening force can be obtained, and the tightening force of the chuck tube is It is almost uniform over the entire circumference. Furthermore, even if a local force is applied to the portion of the chuck cylinder wall corresponding to the deep hole, there is no risk of permanent deformation of this portion. Furthermore, since the deep hole part is reinforced with an elastic material,
If the same rigidity as the chuck tube of No. 56-72609 is provided, the wall thickness of the chuck tube can be made thinner than that of the chuck tube of No. 56-72609, which is advantageous in terms of processing.
第１図はこの考案の正面図、第２図は同じく一
部を切断した側面図である。
１……チヤツク本体、２……チヤツク筒、４…
…ニードルローラー、５……締付筒、６……環状
深穴、７……弾性体。
FIG. 1 is a front view of this invention, and FIG. 2 is a partially cut away side view. 1...chuck body, 2...chuck tube, 4...
... Needle roller, 5 ... Tightening cylinder, 6 ... Annular deep hole, 7 ... Elastic body.
Claims (1)
ー面とした肉厚のチヤツク筒の基端を連設する
と共に、前記チヤツク筒にニードルローラーを
介して締付筒を回転自在に嵌装したチヤツクに
おいて、前記チヤツク筒にはその先端から基部
へ向けて所定深さの環状深穴を前記チヤツク筒
の内周と同心円的に設けると共に、前記深穴へ
弾性体を充填してなるチヤツク。 ２ 弾性体は、ゴム又は弾性合成樹脂とした実用
新案登録請求の範囲第１項記載のチヤツク。 ３ 弾性体は、チヤツク筒の先端からニードルロ
ーラーとの接触部を越えて設けた実用新案登録
請求の範囲第１項記載のチヤツク。[Claims for Utility Model Registration] 1. A proximal end of a thick chuck tube whose outer peripheral surface is tapered is connected to one end of the chuck body, and a tightening tube is attached to the chuck tube via a needle roller. In the chuck rotatably fitted, the chuck tube is provided with an annular deep hole of a predetermined depth from the tip to the base concentrically with the inner circumference of the chuck tube, and the deep hole is filled with an elastic material. A chat that happens. 2. The chuck according to claim 1, wherein the elastic body is rubber or elastic synthetic resin. 3. The chuck according to claim 1, wherein the elastic body is provided from the tip of the chuck cylinder to beyond the contact portion with the needle roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984194014U JPH0121688Y2 (en) | 1984-12-21 | 1984-12-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984194014U JPH0121688Y2 (en) | 1984-12-21 | 1984-12-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61109606U JPS61109606U (en) | 1986-07-11 |
| JPH0121688Y2 true JPH0121688Y2 (en) | 1989-06-28 |
Family
ID=30751448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984194014U Expired JPH0121688Y2 (en) | 1984-12-21 | 1984-12-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0121688Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0214886Y2 (en) * | 1985-01-24 | 1990-04-23 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5145024U (en) * | 1974-09-30 | 1976-04-02 | ||
| JPS5733930U (en) * | 1980-08-06 | 1982-02-23 |
-
1984
- 1984-12-21 JP JP1984194014U patent/JPH0121688Y2/ja not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5145024U (en) * | 1974-09-30 | 1976-04-02 | ||
| JPS5733930U (en) * | 1980-08-06 | 1982-02-23 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61109606U (en) | 1986-07-11 |
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