JPH05185309A - Chuck jaw for tool - Google Patents

Chuck jaw for tool

Info

Publication number
JPH05185309A
JPH05185309A JP3050605A JP5060591A JPH05185309A JP H05185309 A JPH05185309 A JP H05185309A JP 3050605 A JP3050605 A JP 3050605A JP 5060591 A JP5060591 A JP 5060591A JP H05185309 A JPH05185309 A JP H05185309A
Authority
JP
Japan
Prior art keywords
claw
guide
jaw
chuck
nail
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
Application number
JP3050605A
Other languages
Japanese (ja)
Other versions
JP2506581B2 (en
Inventor
Isao Fuwa
勲 不破
Toshiyuki Matsumae
利幸 松前
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP3050605A priority Critical patent/JP2506581B2/en
Publication of JPH05185309A publication Critical patent/JPH05185309A/en
Application granted granted Critical
Publication of JP2506581B2 publication Critical patent/JP2506581B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

PURPOSE:To prevent a jaw guide from being bited, injured, or intruded by a chuck jaw, without changing the other parts and also without greatly changing the manufacturing cost of the jaw or the like, by providing a projection at the lower part of the back surface of the jaw, and by cutting off the front and rear ends of the biting edge parts in a tapered shape at two places on the chucking side. CONSTITUTION:A projection 2 is provided to the lower part of the back surface of a jaw, so that the side sliding end parts of the jaw can be prevented from being bitten into a jaw guide slit part 9, or a jaw guide 8 from being injured, or the bottom part of the jaw from being intruded into the inside of the jaw guide 8, and that a bit or the like can be released. The front and rear ends of the biting edge part are cut off in a taper shape, so that even if the chuck jaw is slightly tilted, the bit is prevented from being fixed at the front or rear end on the chucking side, thereby the runout of the center of the bit can be restrained. The surface roughness is reduced, and the sliding resistance between the chuck jaw and the other parts is reduced, and also the operating force at the time when the bit is fastened and fixed, or released is reduced.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明はドリルビットやドライバ
ービット等を締め付け固定する工具用チャック爪に関す
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chuck jaw for a tool for fastening and fixing a drill bit, a driver bit and the like.

【0002】[0002]

【従来の技術】従来のチャック爪は、例えば鍛造や粉末
焼結で作られ、金型の複雑さ、金型の耐久性、製造コス
ト等の観点から、図6や図7に示すようなシンプルな形
状をしていた。すなわち、図6の爪4では、その側面摺
動端部3が略直角な角部を有し、また、図7の爪4は、
そのチャッキング側が2箇所の食い込みエッジ部1と前
端、後端および中央の3箇所のフラット部21a〜21
cから構成されていた。
2. Description of the Related Art Conventional chuck jaws are made, for example, by forging or powder sintering, and are simple as shown in FIGS. 6 and 7 from the viewpoint of the complexity of the mold, the durability of the mold, the manufacturing cost and the like. It had a unique shape. That is, in the claw 4 of FIG. 6, the side surface sliding end portion 3 has a substantially right angled corner, and the claw 4 of FIG.
The chucking side has two biting edge portions 1 and three flat portions 21a to 21 at the front end, rear end and center.
It was composed of c.

【0003】これらの爪4は、図5に示されるように、
ドリルビットやドライバービット等を締め付け固定する
際、複数個の爪4がテーパブッシュ12や爪ガイド8等
と摺動しながらビットの締め付け固定を行い、複数本の
爪4の食い込みエッジ部1が、ビットに対し同じ高さで
食い込んでビットを固定する。
These claws 4 are, as shown in FIG.
When tightening and fixing a drill bit, a driver bit, etc., the plurality of claws 4 are tightened and fixed while sliding with the taper bush 12, the claw guide 8 and the like, and the biting edge portion 1 of the plurality of claws 4 is Fix the bit by biting at the same height as the bit.

【0004】ここで、従来の工具用チャック爪の例を図
5により説明すると、ドリルビットを締め付ける複数本
の爪4は、いずれも背面翼片10が傾斜面とされてその
側面底部にL字型係合片5を有しており、この係合片5
が爪支持手段としてのフロートネジ6に設けられた係合
溝7に係合される。
An example of a conventional tool chuck claw will now be described with reference to FIG. 5. In each of the plurality of claws 4 for tightening the drill bit, the rear wing piece 10 is an inclined surface, and an L-shape is formed on the bottom of the side surface. It has a mold engagement piece 5, and this engagement piece 5
Is engaged with an engaging groove 7 provided in the float screw 6 as the pawl supporting means.

【0005】また、各爪4は円錐体状の爪ガイド8に形
成されたスリット9に納められ、かつ、爪ガイド8の外
面の円錐面に翼片10が係合されている。フロートネジ
6は、下部にローレットが施されたシャフト11上部の
雌ネジにねじこまれ、さらに内面に傾斜角を持つテーパ
ブッシュ12内に納められた後、ロックハンドル13で
固定される。さらにラチェット14を組み込んだ後、プ
ラスチック製のハンドル15とキャップ16を組み合わ
せて、チャックとして完成する。
Each claw 4 is housed in a slit 9 formed in a conical claw guide 8, and a wing piece 10 is engaged with the outer conical surface of the claw guide 8. The float screw 6 is screwed into a female screw on the upper portion of the shaft 11 having a knurled lower portion, is further housed in a taper bush 12 having an inclined angle on the inner surface, and then fixed by a lock handle 13. After further incorporating the ratchet 14, a plastic handle 15 and a cap 16 are combined to complete a chuck.

【0006】以上により、ハンドル13を回転させる
と、シャフト11が回転するが、この時フロートネジ6
はシャフト11に対して、回転止めがなされている為、
軸方向に移動する。そして、この移動が前方向へ向かう
時は、爪4はテーパブッシュ12内面のテーパに沿って
軸方向へと移動すると同時に中心へ集まり、ドリルビッ
トを固定する。
As described above, when the handle 13 is rotated, the shaft 11 rotates, but at this time, the float screw 6
Is a rotation stop for the shaft 11,
Move in the axial direction. When this movement is forward, the claws 4 move axially along the taper of the inner surface of the taper bush 12 and at the same time gather at the center to fix the drill bit.

【0007】一方、ドリルビットの固定を緩める場合
は、ハンドル13を上記固定時の逆方向に回転させ、フ
ロートネジ6を軸方向の後ろ方向に移動させる。そし
て、このフロートネジ6に設けられた係合溝7に側面底
部のL字型係合片5が係合された爪4が後ろ方向に移動
しながら、同時に爪ガイド8外面の円錐面に沿って移動
し、軸の中心より離れていくことにより、ドリルビット
の固定を緩める。
On the other hand, when loosening the fixing of the drill bit, the handle 13 is rotated in the opposite direction of the fixing, and the float screw 6 is moved backward in the axial direction. Then, the claw 4 in which the L-shaped engaging piece 5 at the bottom of the side surface is engaged with the engaging groove 7 provided in the float screw 6 is moved rearward, and at the same time, along the conical surface of the outer surface of the claw guide 8. Loosen the drill bit by moving it away from the center of the shaft.

【0008】ところで、他の従来例として、例えば特開
昭62−99009号において、鉄系金属粉末を有機結
合剤を添加後、所定形状に成形、結合剤除去、焼結して
チャック爪を作る技術が提案されている。この技術によ
ると、切削加工を必要とせず、工具用チャックとして要
求される硬度や強度、精度を備えた複雑形状の爪を容易
に製作することができる。
By the way, as another conventional example, for example, in Japanese Unexamined Patent Publication No. 62-99009, an iron-based metal powder is added with an organic binder, and then shaped into a predetermined shape, the binder is removed, and sintered to form a chuck claw. Technology is proposed. According to this technique, it is possible to easily manufacture a claw having a complicated shape having hardness, strength, and accuracy required for a tool chuck without requiring cutting work.

【0009】[0009]

【発明が解決しようとする課題】しかし、前記の図6に
示すような形状のチャック爪にあっては、ビット等を緩
める際、チャック爪の側面摺動端部3が爪ガイド8のス
リット9に食い込んだり、爪ガイド8を傷つけたり、爪
4の底部が爪ガイド内部へ入り込んだりするという課題
を有していた。
However, in the chuck claw having the shape as shown in FIG. 6, the side surface sliding end 3 of the chuck claw is slit 9 of the claw guide 8 when loosening a bit or the like. However, there are problems such as biting into the nail, damaging the nail guide 8, and the bottom of the nail 4 getting into the inside of the nail guide.

【0010】すなわち、図8のように、爪4は爪ガイド
8に形成されたスリット9に納められ、スリット9内部
を摺動しながら移動する。そのため、スリット9と爪4
の間には小さな隙間が設けてあるが、ビットの固定を緩
める場合、図9のように、爪4は側面底部のL字型係合
片5を後ろ方向に引っ張られるため横に傾き、実際は、
図6の側面摺動端部3で線当りで摺動する。その結果、
爪4の側面摺動端部3がスリット9内部に食い込んだ
り、傷つけたりする。
That is, as shown in FIG. 8, the claw 4 is housed in the slit 9 formed in the claw guide 8 and moves while sliding inside the slit 9. Therefore, the slit 9 and the claw 4
Although a small gap is provided between them, when loosening the fixing of the bit, as shown in FIG. 9, the claw 4 tilts sideways because the L-shaped engaging piece 5 at the bottom of the side surface is pulled backward, and actually, ,
The side sliding end 3 of FIG. 6 slides line by line. as a result,
The side sliding end 3 of the claw 4 bites into or damages the inside of the slit 9.

【0011】また、爪4の翼片10は、図10のよう
に、爪ガイド8外面の円錐面に係合され、テーパブッシ
ュ12内に納められているが、この翼片10とテーパブ
ッシュ12内面も爪4の上下動時に摺動するため、この
間に小さな隙間を設けている。そのため、ビットの固定
を緩める場合、図11(a)のように、爪4は底部のL
字型係合片5を引っ張られ、翼片10の下端を支点にし
て縦に傾き、爪底部が爪ガイド8内部に入り込んでしま
う。
Further, as shown in FIG. 10, the blade 10 of the pawl 4 is engaged with the conical surface of the outer surface of the pawl guide 8 and is housed in the taper bush 12. Since the inner surface also slides when the claw 4 moves up and down, a small gap is provided between them. Therefore, when loosening the fixing of the bit, as shown in FIG.
The V-shaped engaging piece 5 is pulled and tilted vertically with the lower end of the wing piece 10 as a fulcrum, and the bottom of the claw enters the inside of the claw guide 8.

【0012】更に、図7に示す従来の工具用チャック爪
は、爪全長に対しエッジ部1の高さが小さいため、図1
1(a)(b)に示すように、チャック爪4が僅かに傾
くだけで、前端または後端と1箇所の食い込みエッジ部
1がビット17に当り、テーパブッシュ12に押さえら
れても傾きが解消されずにビット17を固定してしま
い、その結果、ビット17の芯振れが発生するという課
題がある。
Further, in the conventional tool chuck claw shown in FIG. 7, the height of the edge portion 1 is small with respect to the total length of the claw, so that FIG.
As shown in FIGS. 1 (a) and 1 (b), when the chuck claw 4 is slightly tilted, the front edge or the rear edge and one biting edge portion 1 hit the bit 17, and even if the bite is pressed by the taper bush 12, the tilt is not tilted. There is a problem that the bit 17 is fixed without being eliminated, and as a result, the center deviation of the bit 17 occurs.

【0013】更にまた、ドリルビットやドライバービッ
ト等を締め付け固定するこの種の工具用チャック爪は、
テーパブッシュ12、爪ガイド8等と摺動しながらビッ
トの締め付け、緩めを行うため、チャック爪とこれらと
の摺動抵抗をできるだけ小さく抑える必要がある。
Furthermore, this kind of tool chuck claw for tightening and fixing a drill bit, a driver bit, etc.
Since the bit is tightened and loosened while sliding on the taper bush 12, the claw guide 8 and the like, it is necessary to suppress the sliding resistance between the chuck claw and these as small as possible.

【0014】ところが、一般に、材料粉末の粒径に依存
して表面粗さは大きくなり、その結果、摺動抵抗が大き
くなる。そして、従来技術によれば、焼結後、表面平滑
化処理をしておらず、ビットの締め付け固定、緩め操作
時に摺動を伴うチャック爪においては、摺動抵抗が大き
く非常に大きな力を要し、また、爪ガイドを傷つけ、操
作不能になるという課題が多発している。
However, generally, the surface roughness increases depending on the particle size of the material powder, and as a result, the sliding resistance increases. Further, according to the conventional technique, after the sintering, the surface smoothing treatment is not performed, and the chuck claw that slides when tightening, fixing and loosening the bit has a large sliding resistance and requires a very large force. However, there are many problems that the nail guide is damaged and cannot be operated.

【0015】本発明はかかる課題を解決するために為さ
れたもので、その目的とするところは、他の部品を変え
ることなく、また、爪製造コスト等を大きく変えること
なく、爪ガイドへの食い込み、傷つけ、入り込み現象等
のない工具用チャック爪を提供することにある。
The present invention has been made to solve the above problems, and its object is to apply a nail guide to a nail guide without changing other components or significantly changing the nail manufacturing cost. The object is to provide a chuck jaw for a tool that does not bite, scratch, or get in.

【0016】[0016]

【課題を解決するための手段】上記課題を解決するため
に、本発明は、背面翼片に傾斜角をもち、内面に上記傾
斜角と同じ傾斜を持ったテーパブッシュに沿い側面は爪
ガイドでガイドされ、テーパブッシュ、爪ガイドを摺動
しながら上下動することによりドリルビットやドライバ
ービット等を締め付け固定、緩め操作を行う工具用チャ
ック爪において、緩め付け固定、緩め操作時、爪ガイド
スリット部への爪側面摺動端部の食い込みと、爪底部の
爪ガイド内部への入り込みを防止する突起を爪背面下部
に設けたことを特徴とする。
In order to solve the above-mentioned problems, the present invention has a back wing piece having an inclination angle and an inner surface along a taper bush having the same inclination angle as the above inclination angle, and a side surface is provided with a claw guide. Tool chuck jaws that are guided and move up and down while sliding the taper bush and claw guide to tighten and fix drill bits, driver bits, etc. It is characterized in that a projection is provided at a lower portion of the back surface of the nail so as to prevent the sliding end portion of the nail side surface from entering the nail and the bottom portion of the nail from entering the inside of the nail guide.

【0017】また、前記の工具用チャック爪において、
チャッキング側に任意に2箇所の食い込みエッジ部を設
け、該食い込みエッジ部の前端および後端をテーパ状に
切り欠いたことを特徴とする。
Further, in the above-mentioned chuck jaws for tools,
Two biting edge portions are arbitrarily provided on the chucking side, and the front end and the rear end of the biting edge portion are notched in a tapered shape.

【0018】更に、前記の工具用チャック爪において、
緩め付け固定、緩め操作時、爪ガイドスリット部への爪
側面摺動端部の食い込みと、爪底部の爪ガイド内部への
入り込みを防止する突起を爪背面下部に設けると共に、
チャッキング側に任意に2箇所の食い込みエッジ部を設
け、該食い込みエッジ部の前端および後端をテーパ状に
切欠いたことを特徴とする。
Further, in the chuck jaws for the above tool,
At the time of loosening, fixing, and loosening operation, a protrusion is provided on the lower back of the nail to prevent the sliding end of the side surface of the nail from biting into the slit of the nail guide and the bottom of the nail from entering the inside of the nail guide.
Two biting edge portions are arbitrarily provided on the chucking side, and a front end and a rear end of the biting edge portion are notched in a taper shape.

【0019】更にまた、前記の工具用チャック爪におい
て、鉄系粉末に有機結合剤を添加して所定形状に成形し
た後、有機結合剤を除去して焼結し、更に該焼結品の表
面平滑化処理を行い、表面粗さを小さくして摺動性を向
上させたことを特徴とする。
Furthermore, in the above-mentioned chuck jaws for a tool, an organic binder is added to iron-based powder to shape it into a predetermined shape, the organic binder is removed, and sintering is carried out. A smoothing treatment is performed to reduce the surface roughness and improve the slidability.

【0020】[0020]

【作用】前記構成により、本発明によれば、爪背面下部
に突起をもたせることにより、爪ガイドスリット部に爪
側面摺動端部が食い込んだり、爪ガイドを傷つけたり、
爪ガイド内部に爪底部が入り込んだりすることなく、ビ
ット等を緩めることができる。又、食い込みエッジ部の
前端および後端をテーパ状に切欠いたことにより、チャ
ック爪が僅かに傾いただけでは、ビットをチッャキング
側前端または後端で固定することはなく、ビットの芯振
れを押さえることができる。
According to the present invention having the above-described structure, by providing the projection on the lower portion of the back surface of the nail, the sliding end of the nail side surface is bited into the slit of the nail guide, or the nail guide is damaged.
Bits can be loosened without the bottom of the nail getting inside the nail guide. Also, the front and rear edges of the biting edge are notched in a taper shape, so that if the chuck jaws are slightly tilted, the bit will not be fixed at the front or rear end on the chucking side, but the runout of the bit will be suppressed. You can

【0021】更に、表面粗さを小さくしたことにより、
チャック爪と他の部品との摺動抵抗が小さくなり、ビッ
トの締め付け固定、緩め操作時における操作力は小さく
てすみ、かつ、爪ガイド等を傷つけることもなくなる。
Further, by reducing the surface roughness,
The sliding resistance between the chuck claw and other parts is reduced, the operating force required for tightening, fixing and loosening the bit is small, and the claw guide is not damaged.

【0022】[0022]

【実施例】本発明の実施例を図1および図2に示す。本
実施例では、鉄系金属粉末に有機結合剤を添加し、これ
を所定形状に成形した後、有機結合剤を除去し焼結する
方法で製造した。先ず本実施例において、図1に示すよ
うに、爪4の背面下部に、L字型係合片5が設けられて
いない側の側面20を延長した形で突起2を設け、更に
摺動端部にはR加工部3aを設けている。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention is shown in FIGS. In this example, an organic binder was added to the iron-based metal powder, and the powder was molded into a predetermined shape, and then the organic binder was removed and sintered. First, in this embodiment, as shown in FIG. 1, a protrusion 2 is provided on the lower portion of the back surface of the claw 4 by extending a side surface 20 on the side where the L-shaped engaging piece 5 is not provided, and further, a sliding end. An R processing section 3a is provided in the section.

【0023】また、図2に示すように、爪4のチャッキ
ング側に任意に2箇所の食い込みエッジ部1を設け、そ
の前端および後端をテーパ状に切欠いた切欠き部1a、
1bを設けている。このような形状とすることにより、
図3(a)(b)のように、爪4は正常に爪ガイド8に
納められることになる。
Further, as shown in FIG. 2, two biting edge portions 1 are arbitrarily provided on the chucking side of the claw 4, and a notch portion 1a is formed by notching the front end and the rear end in a tapered shape.
1b is provided. By having such a shape,
As shown in FIGS. 3 (a) and 3 (b), the claw 4 is normally stored in the claw guide 8.

【0024】すなわち、前記突起2により、ビット17
を締める時の爪ガイド8との摺動部、即ち線当りで摺動
している爪底端部は大きくなり、摺動抵抗は小さくなる
ため、爪ガイドスリット9部への食い込みはなくなり、
傷つきも低減される。また、爪底部が大きくなったた
め、従来よりも爪4が縦に大きく傾かなければ爪ガイド
8に入り込まなくなり、その前にテーパブッシュ12内
面に沿い傾きが補正されるため、爪ガイド8内部に入り
込んでしまうという現象もなくなる。
That is, the protrusion 17 allows the bit 17
When tightening, the sliding part with the claw guide 8, that is, the claw bottom end sliding along the line, becomes large and the sliding resistance becomes small, so there is no bite into the claw guide slit 9.
Scratches are also reduced. In addition, since the bottom of the claw is large, the claw 4 does not enter the claw guide 8 unless it is tilted more vertically than before, and the tilt is corrected along the inner surface of the taper bush 12 before that, so the claw 4 enters the claw guide 8. The phenomenon of being lost also disappears.

【0025】更に、食い込みエッジ部1の前端および後
端をテーパ状に切欠いたことにより、図4(a)(b)
のように、上下動時に傾いている爪4も、チャッキング
側前端または後端がビット17に当たることはなく、ビ
ット固定時、テーパブッシュ12に背面翼片10を押さ
えられることにより、傾きは解消され芯振れは非常に小
さく抑えられる。なお、これら突起2やテーパ状の切欠
き部1a、1bは、これらのいずれか一方を設けても良
いし、また、1つの爪にこれらの双方を設けても良い。
Further, the front end and the rear end of the biting edge portion 1 are notched in a tapered shape, so that FIG.
As described above, the front end or the rear end of the chucking side of the claw 4 which is tilted during vertical movement does not hit the bit 17, and when the bit is fixed, the taper bush 12 presses the rear wing piece 10 to eliminate the tilt. The runout is suppressed to a very small level. The projection 2 and the tapered notches 1a and 1b may be provided with either one of them, or both may be provided with one claw.

【0026】次に、本発明において、鉄系粉末に有機結
合剤を添加して所定形状に成形した後、有機結合剤を除
去して焼結したものを、表面平滑化処理により表面粗さ
を小さくしたものであり、本実施例では表面平滑化処理
として、バレル研磨を用いた。
Next, in the present invention, an iron-based powder is added with an organic binder to form it into a predetermined shape, the organic binder is removed, and the resultant is sintered to obtain a surface roughness by surface smoothing treatment. In this example, barrel polishing was used as the surface smoothing treatment.

【0027】ところで、前の図5で述べたように、チャ
ック爪を組立てた後、ハンドル13を回転させるとフロ
ートネジ6は軸方向に移動し、この移動が前方向へ向か
う時は、爪4はテーパブッシュ12内面に沿って軸方向
へと移動すると同時に、中心へ集まりドリルビットを固
定する。一方、ドリルビットの固定を緩める場合は、ハ
ンドル13を上記固定時の逆方向に回転させ、爪4が後
ろ方向に移動しながら、同時にガイド8外面に沿って移
動し、軸の中心より離れていくことにより、ドリルビッ
トの固定を緩める。
By the way, as described in FIG. 5 above, when the handle 13 is rotated after the chuck claws are assembled, the float screw 6 moves in the axial direction, and when this movement is in the forward direction, the claws 4 are moved. Moves axially along the inner surface of the tapered bush 12 and at the same time gathers in the center to fix the drill bit. On the other hand, when loosening the fixing of the drill bit, the handle 13 is rotated in the opposite direction to the above-mentioned fixing so that the pawl 4 moves rearward while simultaneously moving along the outer surface of the guide 8 and away from the center of the shaft. Loosen the fixing of the drill bit by going.

【0028】この際、図1におけるチャック4の翼片摺
動部10aはテーパブッシュ12内面と、また側面摺動
部20は爪ガイド8のスリット部9と、更にL字型係合
片5の摺動部5aはフロートネジ6の係合溝7と、それ
ぞれ摺動し合うため、これらの摺動抵抗が小さいほどビ
ットの締め付け固定、緩め時の操作力は小さくて済む。
At this time, the blade blade sliding portion 10a of the chuck 4 in FIG. 1 is the inner surface of the taper bush 12, the side blade sliding portion 20 is the slit portion 9 of the claw guide 8, and the L-shaped engaging piece 5 is also provided. Since the sliding portion 5a slides with the engaging groove 7 of the float screw 6, respectively, the smaller the sliding resistance thereof, the smaller the operating force for fastening and loosening the bit.

【0029】図1に示した形状に金属粉末を成形、焼結
したチャック爪の表面粗さは中心線平均粗さで Ra=0.9μm であり、この爪を用いたチャックの操作力は T=5kgf以上 であった。また、この爪をバレル研磨した時の表面粗さ
は、 Ra=0.5μm であり、この爪を用いたチャックの操作力は T=2kgf であった。
The surface roughness of the chuck claw formed by sintering metal powder in the shape shown in FIG. 1 is Ra = 0.9 μm in terms of center line average roughness, and the chuck operating force using this claw is T = 5 kgf or more. Further, the surface roughness of this nail when barrel-polished was Ra = 0.5 μm, and the operating force of the chuck using this nail was T = 2 kgf.

【0030】[0030]

【発明の効果】本発明は以上説明した通り、爪背面下部
に突起を設けたり、チャッキング側の2箇所の食い込み
エッジ部の前端および後端をテーパ状に切欠いたことに
より、他の部品を変えることなく、また、爪製造コスト
等を大きく変えることなく、爪ガイドへの食い込み、傷
つけ、入り込み現象等のない工具用チャック爪を得るこ
とができる。
As described above, according to the present invention, a protrusion is provided on the lower part of the back surface of the claw, and the front end and the rear end of the two biting edge portions on the chucking side are notched in a taper shape so that other parts can be provided. It is possible to obtain a chuck jaw for a tool that does not bite, scratch, or get into the nail guide without changing the nail manufacturing cost or the like.

【0031】更に、鉄系粉末に有機結合剤を添加して所
定形状に成形した後、有機結合剤を除去して焼結したも
のを、表面平滑化処理により表面粗さを小さくしたこと
により、摺動抵抗が減少し、従って工具の締め付け固定
や緩め操作時の操作力が小さくなり、更に操作時に爪ガ
イドを傷つけるおそれがなくなる。
Further, by adding an organic binder to the iron-based powder and shaping it into a predetermined shape, removing the organic binder and sintering, the surface smoothing treatment reduces the surface roughness, Sliding resistance is reduced, and therefore the operation force for tightening, fixing and loosening the tool is reduced, and there is no risk of damaging the claw guide during operation.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明による突起を備えたチャック爪を示す図
である。
FIG. 1 is a view showing a chuck claw provided with a protrusion according to the present invention.

【図2】本発明にによるテーパ状切欠き部を有するチャ
ック爪を示す図である。
FIG. 2 is a diagram showing a chuck claw having a tapered notch portion according to the present invention.

【図3】(a)(b)は本発明のチャック爪が正常に爪
ガイドに納められている状態を示す図である。
3 (a) and 3 (b) are views showing a state in which the chuck claw of the present invention is normally accommodated in the claw guide.

【図4】(a)(b)(c)は本発明のチャック爪が傾
いても突起により食い込み現象が起こらないことを示す
図である。
4 (a), (b) and (c) are views showing that even if the chuck claws of the present invention are inclined, the protrusion does not cause the bite phenomenon.

【図5】従来のチャック爪を用いた工具の分解斜視図で
ある。
FIG. 5 is an exploded perspective view of a tool using a conventional chuck claw.

【図6】従来のチャック爪を示す図である。FIG. 6 is a view showing a conventional chuck claw.

【図7】従来のチャック爪を示す図である。FIG. 7 is a view showing a conventional chuck claw.

【図8】従来のチャック爪が正常に爪ガイドに納められ
た状態の横断面を示す図である。
FIG. 8 is a cross-sectional view showing a state in which a conventional chuck claw is normally stored in a claw guide.

【図9】従来のチャック爪が爪ガイドに食い込んでいる
状態の横断面を示す図である。
FIG. 9 is a cross-sectional view showing a state in which a conventional chuck claw bites into a claw guide.

【図10】従来のチャック爪が正常にビットに当り、か
つ爪ガイドに納められた状態の縦断面を示す図である。
FIG. 10 is a vertical cross-sectional view showing a state in which a conventional chuck claw normally contacts a bit and is housed in a claw guide.

【図11】(a)(b)は従来のチャック爪が傾いた状
態でビットに当り、かつ爪ガイド内部に入り込んでいる
状態の縦断面を示す図である。
11 (a) and 11 (b) are vertical sectional views showing a state in which a conventional chuck claw hits a bit in a tilted state and is inserted into a claw guide.

【符号説明】[Explanation of symbols]

1 食い込みエッジ部 1a,1b 切欠き部 2 突起 3 側面摺動端部 3a R加工部 4 爪 8 爪ガイド 9 ガイドスリット 10 翼片 12 テーパブッシュ 1 biting edge part 1a, 1b notch part 2 protrusion 3 side sliding end part 3a R processed part 4 claw 8 claw guide 9 guide slit 10 wing piece 12 taper bush

─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───

【手続補正書】[Procedure amendment]

【提出日】平成4年6月12日[Submission date] June 12, 1992

【手続補正2】[Procedure Amendment 2]

【補正対象書類名】明細書[Document name to be amended] Statement

【補正対象項目名】請求項1[Name of item to be corrected] Claim 1

【補正方法】変更[Correction method] Change

【補正内容】[Correction content]

【手続補正3】[Procedure amendment 3]

【補正対象書類名】明細書[Document name to be amended] Statement

【補正対象項目名】請求項3[Name of item to be corrected] Claim 3

【補正方法】変更[Correction method] Change

【補正内容】[Correction content]

【手続補正4】[Procedure correction 4]

【補正対象書類名】明細書[Document name to be amended] Statement

【補正対象項目名】0016[Correction target item name] 0016

【補正方法】変更[Correction method] Change

【補正内容】[Correction content]

【0016】[0016]

【課題を解決するための手段】上記課題を解決するため
に、本発明は、背面翼片に傾斜角をもち、内面に上記傾
斜角と同じ傾斜を持ったテーパブッシュに沿い側面は爪
ガイドでガイドされ、テーパブッシュ、爪ガイドを摺動
しながら上下動することによりドリルビットやドライバ
ービット等を締め付け固定、緩め操作を行う工具用チャ
ック爪において、締め付け固定、緩め操作時、爪ガイド
スリット部への爪側面摺動端部の食い込みと、爪底部の
爪ガイド内部への入り込みを防止する突起を爪背面下部
に設けたことを特徴とする。
In order to solve the above-mentioned problems, the present invention has a backside wing piece having an inclination angle and an inner surface along a taper bush having the same inclination angle as the above inclination surface, and a side surface is provided with a claw guide. guided, tapered bush, while sliding the pawl guide fastening a drill bit or screwdriver bit like by vertical movement fixed in the tool chuck claws to perform the loosening operation, tightening fixation, during loosening operation, the pawl guide slits It is characterized in that a protrusion is provided at a lower portion of the back surface of the nail so as to prevent the sliding end portion of the nail side surface from entering the nail and the bottom of the nail from entering the inside of the nail guide.

【手続補正5】[Procedure amendment 5]

【補正対象書類名】明細書[Document name to be amended] Statement

【補正対象項目名】0018[Correction target item name] 0018

【補正方法】変更[Correction method] Change

【補正内容】[Correction content]

【0018】更に、前記の工具用チャック爪において、
締め付け固定、緩め操作時、爪ガイドスリット部への爪
側面摺動端部の食い込みと、爪底部の爪ガイド内部への
入り込みを防止する突起を爪背面下部に設けると共に、
チャッキング側に任意に2箇所の食い込みエッジ部を設
け、該食い込みエッジ部の前端および後端をテーパ状に
切欠いたことを特徴とする。
Further, in the above-mentioned chuck jaws for tools,
Tightening fixing, during loosening operation, the bite of the claw side sliding end portion of the nail guide slit portions, the projections for preventing entry of the nail guide inside the claw bottom is provided on the pawl lower back,
Two biting edge portions are arbitrarily provided on the chucking side, and a front end and a rear end of the biting edge portion are notched in a taper shape.

【手続補正書】[Procedure amendment]

【提出日】平成4年12月11日[Submission date] December 11, 1992

【手続補正1】[Procedure Amendment 1]

【補正対象書類名】図面[Document name to be corrected] Drawing

【補正対象項目名】全図[Correction target item name] All drawings

【補正方法】変更[Correction method] Change

【補正内容】[Correction content]

【図1】 [Figure 1]

【図2】 [Fig. 2]

【図3】 [Figure 3]

【図4】 [Figure 4]

【図6】 [Figure 6]

【図7】 [Figure 7]

【図8】 [Figure 8]

【図9】 [Figure 9]

【図10】 [Figure 10]

【図5】 [Figure 5]

【図11】 FIG. 11

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】 背面翼片に傾斜角をもち、内面に上記傾
斜角と同じ傾斜を持ったテーパブッシュに沿い側面は爪
ガイドでガイドされ、テーパブッシュ、爪ガイドを摺動
しながら上下動することによりドリルビットやドライバ
ービット等を締め付け固定、緩め操作を行う工具用チャ
ック爪において、緩め付け固定、緩め操作時、爪ガイド
スリット部への爪側面摺動端部の食い込みと、爪底部の
爪ガイド内部への入り込みを防止する突起を爪背面下部
に設けたことを特徴とする工具用チャック爪。
1. A rear wing piece has an inclination angle and an inner surface is guided by a pawl guide along a taper bush having the same inclination angle as the above inclination surface, and is vertically moved while sliding the taper bush and the pawl guide. With the tool chuck jaws that tighten and fix and loosen the drill bit, driver bit, etc., during the loosening, fixing and loosening operations, the nail side slides into the nail guide slits and the nails at the bottom of the nail. A chuck jaw for a tool, which is provided with a protrusion on the lower portion of the back surface of the jaw for preventing the protrusion from entering the inside of the guide.
【請求項2】 背面翼片に傾斜角をもち、内面に上記傾
斜角と同じ傾斜を持ったテーパブッシュに沿い側面は爪
ガイドでガイドされ、テーパブッシュ、爪ガイドを摺動
しながら上下動することによりドリルビットやドライバ
ービット等を締め付け固定、緩め操作を行う工具用チャ
ック爪において、チャッキング側に任意に2箇所の食い
込みエッジ部を設け、該食い込みエッジ部の前端および
後端をテーパ状に切り欠いたことを特徴とする工具用チ
ャック爪。
2. A back wing piece has an inclination angle and an inner surface is guided by a claw guide along a taper bush having the same inclination as the above inclination angle, and the side surface is vertically moved while sliding the taper bush and the claw guide. In this way, in the chuck jaws for tools for tightening, fixing and loosening drill bits, driver bits, etc., two biting edge parts are arbitrarily provided on the chucking side, and the front and rear ends of the biting edge parts are tapered. A chuck claw for tools, which is characterized by being cut out.
【請求項3】 背面翼片に傾斜角をもち、内面に上記傾
斜角と同じ傾斜を持ったテーパブッシュに沿い側面は爪
ガイドでガイドされ、テーパブッシュ、爪ガイドを摺動
しながら上下動することによりドリルビットやドライバ
ービット等を締め付け固定、緩め操作を行う工具用チャ
ック爪において、緩め付け固定、緩め操作時、爪ガイド
スリット部への爪側面摺動端部の食い込みと、爪底部の
爪ガイド内部への入り込みを防止する突起を爪背面下部
に設けると共に、チャッキング側に任意に2箇所の食い
込みエッジ部を設け、該食い込みエッジ部の前端および
後端をテーパ状に切欠いたことを特徴とする工具用チャ
ック爪。
3. The back wing piece has an inclination angle, and the inner surface is guided by a pawl guide along a taper bush having the same inclination angle as the above inclination surface, and the side surface is vertically moved while sliding the taper bush and the pawl guide. With the tool chuck jaws that tighten and fix and loosen the drill bit, driver bit, etc., during the loosening, fixing and loosening operations, the nail side slides into the nail guide slits and the nails at the bottom of the nail. A protrusion is provided on the lower part of the back surface of the claw to prevent it from entering the inside of the guide, two biting edge portions are arbitrarily provided on the chucking side, and the front end and the rear end of the biting edge portion are notched in a taper shape. A chuck claw for a tool.
【請求項4】 請求項1〜3記載の工具用チャック爪に
おいて、鉄系粉末に有機結合剤を添加して所定形状に成
形した後、有機結合剤を除去して焼結し、更に該焼結品
の表面平滑化処理を行い、表面粗さを小さくして摺動性
を向上させたことを特徴とする工具用チャック爪。
4. The chuck jaws for a tool according to claim 1, wherein an organic binder is added to the iron-based powder to form a predetermined shape, the organic binder is removed, and sintering is performed. A chuck jaw for a tool, characterized by smoothing the surface of the product to reduce the surface roughness and improving slidability.
JP3050605A 1991-02-22 1991-02-22 Chuck jaws for tools Expired - Fee Related JP2506581B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3050605A JP2506581B2 (en) 1991-02-22 1991-02-22 Chuck jaws for tools

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3050605A JP2506581B2 (en) 1991-02-22 1991-02-22 Chuck jaws for tools

Publications (2)

Publication Number Publication Date
JPH05185309A true JPH05185309A (en) 1993-07-27
JP2506581B2 JP2506581B2 (en) 1996-06-12

Family

ID=12863602

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3050605A Expired - Fee Related JP2506581B2 (en) 1991-02-22 1991-02-22 Chuck jaws for tools

Country Status (1)

Country Link
JP (1) JP2506581B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001277014A (en) * 2000-02-23 2001-10-09 Roehm Gmbh Manufacturing method of chucking jaw and corresponding article chucking jaw
JP2018529540A (en) * 2015-09-22 2018-10-11 リャンブリッチ プレシスィオン,エス.エル. Chuck with locking device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6299009A (en) * 1985-10-25 1987-05-08 Matsushita Electric Works Ltd Manufacture of pawl for clamping fixture
JPS6420905A (en) * 1987-07-15 1989-01-24 Matsushita Electric Works Ltd Tightening tool

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6299009A (en) * 1985-10-25 1987-05-08 Matsushita Electric Works Ltd Manufacture of pawl for clamping fixture
JPS6420905A (en) * 1987-07-15 1989-01-24 Matsushita Electric Works Ltd Tightening tool

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001277014A (en) * 2000-02-23 2001-10-09 Roehm Gmbh Manufacturing method of chucking jaw and corresponding article chucking jaw
JP2018529540A (en) * 2015-09-22 2018-10-11 リャンブリッチ プレシスィオン,エス.エル. Chuck with locking device
US10758987B2 (en) 2015-09-22 2020-09-01 Stryker Corporation Chuck with locking device

Also Published As

Publication number Publication date
JP2506581B2 (en) 1996-06-12

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