JP2011011268A

JP2011011268A - Deburring tool

Info

Publication number: JP2011011268A
Application number: JP2009154822A
Authority: JP
Inventors: Jiro Murata; 二郎村田
Original assignee: Jiro Co Ltd
Current assignee: Jiro Co Ltd
Priority date: 2009-06-30
Filing date: 2009-06-30
Publication date: 2011-01-20

Abstract

PROBLEM TO BE SOLVED: To provide a deburring tool easily mounted to a hole of a workpiece and capable of efficiently removing burrs at the rear side of the workpiece from a surface side.SOLUTION: The deburring tool 10 removes the burrs 3 at the rear side generated during drilling 2 of the workpiece 1 from the surface side. The deburring tool 10 includes an outer cylinder 11 inserted into the hole 2, an operating shaft 12 that is movable in an axial direction to the outer cylinder 11 and is relatively nonrotatably fitted thereto, deburring chips 15 freely turnably mounted in a plurality of openings 13 formed in a circumferential direction at intervals at the tip part of the outer cylinder 11 through a pivot pin 14 and appearable at a use position where they are projected to the outside of the outer cylinder 11 and at a storage position where they are stored in the outer cylinder 11, and switching means 16 arranged at the operating shaft 12 and the deburring chips 15 and allowing the deburring chips 15 to be switched to the use position and the storage position by the operation of the operating shaft 12 in the axial direction.

Description

本発明は、コラムなどの閉断面状の被加工物の穿孔時に発生した、裏側のバリを表側から除去するバリ取り工具に関するものである。 The present invention relates to a deburring tool that removes burrs on the back side, which are generated when a workpiece having a closed cross section such as a column is drilled, from the front side.

被加工物に対してドリルにより穿孔を形成すると、被加工物の裏面側に穿孔の口縁に沿ってバリが突出形成され、手指を傷つけたり、穿孔へのボルト組付時に、ボルトの座りが不安定になったりするので、穿孔形成後にバリ取り作業を行なっている。 When drilling a workpiece with a drill, a burr protrudes along the edge of the drilling hole on the back side of the workpiece, and the bolt sits down when the fingers are damaged or the bolt is assembled to the drilling. Since it becomes unstable, deburring work is performed after drilling.

通常、被加工物からのバリ取り作業は、被加工物の裏面側から、電動工具により穿孔の口縁に座繰りを形成することで除去している。しかし、高層ビルなどの建築物で使用される角形コラムなどのように閉断面状の被加工物に対してドリルにより穿孔を形成した場合には、コラムの内側に電動工具を配置できないので、次のようにしてバリを除去している。即ち、電動工具の先端部に球状の砥石や球状の切削具などのバリ取り工具を取付けて、該バリ取り工具をコラムの外面側から穿孔に刺し通し、該バリ取り具でバリを除去する方法が採用されている。しかし、この方法によりバリを除去する場合には、穿孔の口縁に沿ってバリ取り工具を移動させながらバリを除去する必要があることから、多くの作業時間を要するとともに、一様に綺麗にバリを除去できないという問題があった。 Usually, the deburring work from the workpiece is removed by forming a countersink at the rim of the drilling hole from the back side of the workpiece with an electric tool. However, when drilling is performed on a workpiece with a closed cross-section like a square column used in buildings such as high-rise buildings, the power tool cannot be placed inside the column. The burr is removed like this. That is, a method in which a deburring tool such as a spherical grindstone or a spherical cutting tool is attached to the tip of an electric power tool, the deburring tool is pierced from the outer surface side of the column, and the deburring tool is used to remove the deburring Is adopted. However, when removing burrs by this method, it is necessary to remove burrs while moving the deburring tool along the edge of the drilling hole. There was a problem that burrs could not be removed.

そこで、被加工物の穿孔を挿通可能な筒状体と、筒状体の先端の開口部内に出没可能に設けられ、筒状体と一体に回転可能なバリ取り部材と、筒状体に軸方向に移動自在に設けられて、バリ取り部材を筒状体の周面よりも外方へ突出させる押圧部材と、押圧部材を軸方向に操作可能な操作部材と、操作部材の復帰用バネとを有するバリ取り工具が提案されている（例えば、特許文献１参照。）。 Therefore, a cylindrical body that can be penetrated through the perforation of the workpiece, a deburring member that can be inserted into and retracted from the opening at the tip of the cylindrical body, and that can rotate integrally with the cylindrical body, and a shaft mounted on the cylindrical body A pressing member that is provided so as to be movable in the direction and projects the deburring member outward from the peripheral surface of the cylindrical body, an operating member that can operate the pressing member in the axial direction, and a return spring for the operating member, Has been proposed (for example, see Patent Document 1).

特開２００７−１４４５５３号公報JP 2007-144553 A

ところで、前記特許文献１記載のバリ取り工具は、手動操作でバリを除去することを前提としてなされたものであり、復帰用バネの付勢力に抗して押圧部材を押し操作しながら、バリ取り工具を回転させて、バリを除去する関係上、バリ除去作業が人手による大変煩雑な作業になっていた。しかも、復帰用バネにより押圧部材を復帰させた状態で、バリ取り部材が出没自在な状態となるので、水平方向に形成した穿孔に対してバリ取り工具を挿入する際に、１乃至複数のバリ取り部材がその自重によって外方へ突出することがあり、この外方へ突出したバリ取り部材が穿孔の口縁に引っ掛かって、穿孔に対するバリ取り工具の挿入作業に手間取るという問題があった。 By the way, the deburring tool described in Patent Document 1 is made on the assumption that the burr is removed by manual operation, and the deburring tool is operated while pushing the pressing member against the urging force of the return spring. In order to remove the burrs by rotating the tool, the burrs removal work has been a very complicated work manually. Moreover, since the deburring member can be moved in and out in a state where the pressing member is returned by the return spring, one or more burrs are inserted when the deburring tool is inserted into the drilled hole formed in the horizontal direction. The deburring member may protrude outward due to its own weight, and the deburring member protruding outward is caught on the edge of the drilling, and there is a problem that it takes time to insert the deburring tool into the drilling.

本発明の目的は、被加工物の穿孔への装着が容易で、しかも被加工物の裏側のバリを表側から効率的に除去可能なバリ取り工具を提供することである。 An object of the present invention is to provide a deburring tool that can be easily attached to a drilling hole of a workpiece and can efficiently remove burrs on the back side of the workpiece from the front side.

本発明に係るバリ取り工具は、被加工物の穿孔時に発生した裏側のバリを表側から除去するバリ取り工具であって、前記穿孔に挿通可能な外筒と、前記外筒に対して軸方向に移動自在で且つ相対回転不能に内嵌した操作軸と、前記外筒の先端部に周方向に間隔をあけて形成した複数の開口部に枢支ピンを介して回動自在に装着されて、外筒外へ突出した使用位置と、外筒内に収納した収納位置とに出没可能なバリ取りチップと、前記操作軸とバリ取りチップとに設けられ、操作軸の軸方向への操作により、バリ取りチップを使用位置と収納位置とに切換可能な切換手段とを備えたものである。 A deburring tool according to the present invention is a deburring tool for removing a burr on the back side generated during drilling of a workpiece from the front side, and an outer cylinder that can be inserted through the drilling, and an axial direction with respect to the outer cylinder And a plurality of openings formed at intervals in the circumferential direction at the distal end portion of the outer cylinder so as to be rotatable via pivot pins. The deburring tip that can be moved in and out of the use position protruding outside the outer cylinder and the storage position stored in the outer cylinder, and the operation shaft and the deburring tip are provided, and the operation shaft is operated in the axial direction. The deburring chip is provided with switching means capable of switching between a use position and a storage position.

このバリ取り工具では、切換手段によりバリ取りチップを収納位置に没入させた状態で、先端部が被加工物の裏側へ突出するまで、バリ取り工具を被加工物の穿孔に挿入し、その後切換手段によりバリ取りチップを使用位置に突出させ、バリ取り工具を電動工具で回転させながら引き抜き方向へバリ取り工具を移動させて、外筒とともに回転するバリ取りチップにより、被加工物の穿孔時に発生した裏側のバリを切削除去することになる。そして、バリ除去後、切換手段によりバリ取りチップを収納位置に回動させて、バリ取り工具を被加工物の穿孔から抜き取ることになる。このように、このバリ取り工具では、切換手段によりバリ取りチップを使用位置と収納位置とに位置切換えできるので、バリ取り工具を被加工物の穿孔に挿入するときに、バリ取りチップの自重により、一部のバリ取りチップが使用位置側へ回動することを効果的に防止して、被加工物の穿孔に対してバリ取り工具を円滑に挿入することが可能となり、またバリを除去する際には、バリ取り工具を被加工物の穿孔にバリ取り工具を挿入させて、バリ取りチップを使用位置に回動させてから、電動工具でバリ取り工具を回転させることで、穿孔の口縁のバリを全周にわたって円滑に且つ綺麗に除去することができる。 In this deburring tool, the deburring tool is inserted into the drilling hole of the workpiece until the tip protrudes to the back side of the workpiece with the deburring tip immersed in the storage position by the switching means, and then switched. When the workpiece is drilled by the deburring tip that rotates along with the outer cylinder, the deburring tip protrudes to the working position by means, and the deburring tool moves in the pulling direction while rotating the deburring tool with the electric tool. The burrs on the back side will be removed by cutting. Then, after deburring, the deburring tip is rotated to the storage position by the switching means, and the deburring tool is extracted from the perforation of the workpiece. In this way, in this deburring tool, the position of the deburring tip can be switched between the use position and the storage position by the switching means. Therefore, when the deburring tool is inserted into the drilling of the workpiece, the deburring tip has its own weight. , It is possible to effectively prevent some deburring tips from rotating toward the use position, and to smoothly insert the deburring tool into the drilling of the workpiece, and to remove the deburring In this case, insert the deburring tool into the drilling of the work piece, rotate the deburring tip to the working position, and then rotate the deburring tool with the electric tool. Edge burrs can be removed smoothly and cleanly over the entire circumference.

ここで、前記切換手段として、操作軸の先端近傍部に環状溝を形成し、バリ取りチップの基端部に環状溝に挿入される突起を形成することが好ましい実施の形態である。この場合には、バリ取りチップの突起が環状溝の一方の軸方向端面に当接して、バリ取りチップが使用位置又は収納位置の一方に切換えられ、バリ取りチップの突起が環状溝の他方の軸方向端面に当接することで、バリ取りチップが使用位置又は収納位置の他方に切換えられる。そして、このような環状溝と突起とからなる簡単な構成の切換手段により、バリ取りチップを使用位置と収納位置とに確実に安定的に位置切換することができる。 Here, in the preferred embodiment, as the switching means, an annular groove is formed in the vicinity of the distal end of the operating shaft, and a protrusion inserted into the annular groove is formed in the proximal end portion of the deburring tip. In this case, the protrusion of the deburring tip comes into contact with one axial end surface of the annular groove, the deburring tip is switched to one of the use position and the storage position, and the protrusion of the deburring tip is changed to the other end of the annular groove. By contacting the end face in the axial direction, the deburring tip is switched to the other of the use position and the storage position. Then, the position of the deburring tip can be reliably and stably switched between the use position and the storage position by the switching means having such a simple structure including the annular groove and the projection.

前記バリ取りチップの一方の基端角部を前記枢支ピンで枢支し、バリ取りチップの他方の基端角部に、バリ取りチップを使用位置に保持した状態で、操作軸の先端外周面に当接する当接部を形成することも好ましい実施の形態である。この場合には、当接部が操作軸に当接することで、バリ除去時においてバリ取りチップに作用する、バリ取り工具の引き抜き方向への操作力に対する反力を無理なく確実に受け止めることができる。 One of the base end corners of the deburring tip is pivotally supported by the pivot pin, and the deburring tip is held at the use position on the other base end corner of the deburring tip. It is also a preferred embodiment to form a contact portion that contacts the surface. In this case, the contact portion abuts against the operation shaft, so that the reaction force against the operation force in the pulling direction of the deburring tool that acts on the deburring tip at the time of deburring can be received without difficulty. .

前記外筒に対する操作軸の移動を規制して、バリ取りチップを使用位置と収納位置とに位置切換可能に保持するクリック機構を設けることも好ましい実施の形態である。この場合には、バリ取り工具の操作時における振動等で、使用位置に移動させたバリ取りチップが収納位置側へ回動したり、収納位置に移動させたバリ取りチップが使用位置側に回動したりすることを効果的に防止でき、バリ取り工具の操作性を向上できる。 It is also a preferred embodiment to provide a click mechanism that restricts movement of the operation shaft relative to the outer cylinder and holds the deburring tip between the use position and the storage position so that the position can be switched. In this case, the deburring tip moved to the use position is rotated to the storage position side due to vibration or the like during operation of the deburring tool, or the deburring tip moved to the storage position is rotated to the use position side. Can be effectively prevented and the operability of the deburring tool can be improved.

前記被加工物の表面側における穿孔の口縁に嵌合して外筒の基部側を穿孔に回転自在に位置決めする位置決め手段を設けることも好ましい実施の形態である。このような位置決め手段を設けると、バリ取り工具の基部側を穿孔と同心状に位置決めできるので、バリ除去時におけるバリ取り工具の安定性を向上できる。 It is also a preferred embodiment to provide a positioning means for fitting to the edge of the perforation on the surface side of the workpiece to position the base side of the outer cylinder so as to be rotatable relative to the perforation. By providing such positioning means, the base side of the deburring tool can be positioned concentrically with the drilling, so that the stability of the deburring tool during deburring can be improved.

前記操作軸の基端部に外筒から外方へ突出して、電動工具のチャックに着脱自在に保持されるチャッキング部を形成することも好ましい。このように構成すると、外筒を電動工具のチャックに保持させる場合と比較して、バリ取り工具の部品点数を少なくして、その製作コストを低減できる。 It is also preferable to form a chucking portion that protrudes outward from the outer cylinder at the base end portion of the operation shaft and is detachably held by the chuck of the electric tool. If comprised in this way, compared with the case where an outer cylinder is hold | maintained at the chuck | zipper of an electric tool, the number of parts of a deburring tool can be decreased and the manufacturing cost can be reduced.

前記外筒の先端部に円錐状のガイド部材を取り付けることもできる。この場合には、被加工物の穿孔に対するバリ取り工具の挿入性をガイド部材により向上できる。 A conical guide member may be attached to the tip of the outer cylinder. In this case, the insertion property of the deburring tool with respect to the drilling of the workpiece can be improved by the guide member.

本発明に係るバリ取り工具によれば、切換手段によりバリ取りチップを使用位置と収納位置とに位置切換えできるので、バリ取り工具を被加工物の穿孔に挿入するときに、バリ取りチップの自重により、一部のバリ取りチップが使用位置側へ回動することを効果的に防止して、被加工物の穿孔に対してバリ取り工具を円滑に挿入することが可能となり、またバリを除去する際には、バリ取り工具を被加工物の穿孔にバリ取り工具を挿入させて、バリ取りチップを使用位置に回動させてから、電動工具でバリ取り工具を回転させることで、穿孔の口縁のバリを全周にわたって円滑に且つ綺麗に除去することができる。 According to the deburring tool of the present invention, since the deburring tip can be switched between the use position and the storage position by the switching means, when the deburring tool is inserted into the drilling of the workpiece, the weight of the deburring tip is reduced. This effectively prevents some deburring tips from turning to the use position, allowing the deburring tool to be smoothly inserted into the workpiece and removing burrs. When removing the deburring tool, insert the deburring tool into the drilling of the workpiece, rotate the deburring tip to the working position, and then rotate the deburring tool with the electric tool. The burr at the lip can be removed smoothly and beautifully over the entire circumference.

バリ取り工具の斜視図Perspective view of deburring tool バリ取り工具の(ａ)はバリ取りチップを収納位置に回動させた状態での縦断面図、（ｂ）はバリ取りチップを使用位置に回動させた状態での縦断面図(A) of the deburring tool is a longitudinal sectional view with the deburring tip rotated to the storage position, and (b) is a longitudinal sectional view of the deburring tip rotated to the use position. バリ取り工具の(ａ)はバリ取りチップを収納位置に回動させた状態での要部縦断面図、（ｂ）はバリ取りチップを使用位置に回動させた状態での要部縦断面図(A) of the deburring tool is a vertical cross-sectional view of the main part when the deburring tip is rotated to the storage position, and (b) is a vertical cross-sectional view of the main part when the deburring chip is rotated to the use position. Figure クリック機構付近の縦断面図Longitudinal section around the click mechanism 図２のV-V線端面図End view of V-V line in Fig. 2 図２のVI-VI線断面図Sectional view taken along line VI-VI in Fig. 2 位置決め手段を取り付けた状態でのバリ取り工具の(ａ)はバリ取りチップを収納位置に回動させた状態での縦断面図、（ｂ）はバリ取りチップを使用置に回動させた状態での縦断面図(A) of the deburring tool with the positioning means attached is a longitudinal sectional view of the deburring tip rotated to the storage position, and (b) is a state of rotating the deburring tip to the use position. Longitudinal section at 他の構成のバリ取り工具の斜視図Perspective view of deburring tool with other configuration 同バリ取り工具の（ａ）はバリ取りチップを使用位置に回動させた状態での縦断面図、(ｂ)はバリ取りチップを収納位置に回動させた状態での縦断面図(A) of the deburring tool is a longitudinal sectional view in a state where the deburring tip is rotated to the use position, and (b) is a longitudinal sectional view in a state where the deburring tip is rotated to the storage position. 同バリ取り工具の正面図Front view of the deburring tool

以下、本発明を実施するための形態について、図面を参照しながら説明する。
（第１実施例）
図１〜図６に示すように、このバリ取り工具１０は、被加工物１に形成した穿孔２に挿通可能な外筒１１と、外筒１１に対して軸方向に移動自在で且つ相対回転不能に内嵌した操作軸１２と、外筒１１の先端部に周方向に間隔をあけて形成した複数の開口部１３に枢支ピン１４を介して回動自在に装着されて、外筒１１外へ突出した使用位置と、外筒１１内に収納した収納位置とに出没可能なバリ取りチップ１５と、操作軸１２とバリ取りチップ１５とに設けられ、操作軸１２の軸方向への操作により、バリ取りチップ１５を使用位置と収納位置とに切換可能な切換手段１６とを備えている。 Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
(First embodiment)
As shown in FIGS. 1 to 6, the deburring tool 10 includes an outer cylinder 11 that can be inserted into a perforation 2 formed in a workpiece 1, an axial movement with respect to the outer cylinder 11, and relative rotation. The outer cylinder 11 is rotatably mounted via a pivot pin 14 to an operation shaft 12 that is impossible to fit and a plurality of openings 13 formed at circumferential intervals in the distal end portion of the outer cylinder 11. The deburring tip 15 that can be projected and retracted at the use position protruding outward and the storage position stored in the outer cylinder 11, the operation shaft 12, and the deburring tip 15 are provided, and the operation shaft 12 is operated in the axial direction. Thus, there is provided switching means 16 capable of switching the deburring tip 15 between the use position and the storage position.

外筒１１は、被加工物１に形成した穿孔２よりも小径な筒状部材で構成され、外筒１１の中央部には貫通孔２０が全長にわたって形成されている。外筒１１の先端部には軸方向に延びる３本のスリット２１が周方向に一定間隔おきに形成され、外筒１１の先端部にはスリット２１の先端側部分に嵌合する３つの脚部２２ａを有する円錐状のガイド部材２２がビス２３で固定されている。外筒１１の先端部にガイド部材２２を固定した状態で、スリット２１の基部側には貫通孔２０に連通する角孔状の開口部１３が形成される。開口部１３の個数は、本実施の形態では３個に設定したが、バリ取りチップ１５の個数に応じた任意の個数に設定することができる。ただし、バリ３を切削除去するときにおける切削バランスを考慮して、周方向に一定間隔おきに複数本設けることが好ましい。なお、ガイド部材２２は、穿孔２へのバリ取り工具１０の挿入性を向上するために設けたが、必須の構成ではなく、省略することも可能である。 The outer cylinder 11 is composed of a cylindrical member having a smaller diameter than the perforations 2 formed in the workpiece 1, and a through hole 20 is formed in the central portion of the outer cylinder 11 over the entire length. Three slits 21 extending in the axial direction are formed in the distal end portion of the outer cylinder 11 at regular intervals in the circumferential direction, and three leg portions that fit into the distal end side portion of the slit 21 are formed at the distal end portion of the outer cylinder 11. A conical guide member 22 having 22 a is fixed with screws 23. In a state where the guide member 22 is fixed to the distal end portion of the outer cylinder 11, a rectangular hole-shaped opening 13 communicating with the through hole 20 is formed on the base side of the slit 21. Although the number of openings 13 is set to three in the present embodiment, it can be set to an arbitrary number corresponding to the number of deburring tips 15. However, it is preferable to provide a plurality of burrs 3 at regular intervals in the circumferential direction in consideration of the cutting balance when cutting and removing the burrs 3. In addition, although the guide member 22 was provided in order to improve the insertion property of the deburring tool 10 to the piercing | piercing 2, it is not an essential structure and can also be abbreviate | omitted.

外筒１１の貫通孔２０の基端側には先端側よりも大径の基部貫通孔２０ａが段差部２４を介して形成され、この基部貫通孔２０ａの基端側には軸方向に延びる４本のスプライン溝２０ｂが形成され、貫通孔２０の基端部にはスナップリング２５が装着されている。 A base through hole 20a having a diameter larger than that of the distal end side is formed on the base end side of the through hole 20 of the outer cylinder 11 via a step portion 24, and the base end side of the base through hole 20a extends in the axial direction 4. A spline groove 20 b is formed, and a snap ring 25 is attached to the base end portion of the through hole 20.

操作軸１２は外筒１１の貫通孔２０に内嵌装着されている。操作軸１２の基端部は、外筒１１から外部へ突出されて、図示外の電動工具のチャックに対して着脱自在に取り付けられるチャッキング部１２ａとされている。操作軸１２の基端近傍部には、チャッキング部１２ａよりも大径の大径軸部１２ｂが形成され、大径軸部１２ｂの軸方向への移動が基部貫通孔２０ａの段差部２４とスナップリング２５とで規制されることにより、外筒１１に対する操作軸１２の軸方向への移動範囲が規制されている。大径軸部１２ｂの基端側にはスプライン溝２０ｂに嵌合する４本のスプライン突条１２ｃが形成され、操作軸１２は、スプライン溝２０ｂとスプライン突条１２ｃとのスプライン嵌合により、外筒１１に対して軸方向に相対移動自在で且つ相対回転不能に嵌合されている。 The operation shaft 12 is fitted into the through hole 20 of the outer cylinder 11. A base end portion of the operation shaft 12 is projected to the outside from the outer cylinder 11 and is a chucking portion 12a that is detachably attached to a chuck of an electric tool (not shown). A large-diameter shaft portion 12b having a larger diameter than the chucking portion 12a is formed in the vicinity of the proximal end of the operation shaft 12, and the movement of the large-diameter shaft portion 12b in the axial direction is different from the stepped portion 24 of the base through-hole 20a. By being restricted by the snap ring 25, the movement range in the axial direction of the operation shaft 12 relative to the outer cylinder 11 is restricted. Four spline ridges 12c that fit into the spline grooves 20b are formed on the base end side of the large-diameter shaft portion 12b. The operation shaft 12 is externally attached by spline fitting between the spline grooves 20b and the spline ridges 12c. The cylinder 11 is fitted so as to be relatively movable in the axial direction but not relatively rotatable.

外筒１１の先端部には３本の枢支ピン１４が、外筒１１の軸芯から一定距離あけて直交状に交差するように取り付けられ、枢支ピン１４の途中部は開口部１３の中央部内に露出されている。開口部１３には略長方形状のバリ取りチップ１５が装着されて、バリ取りチップ１５は、図２（ａ）に図示の使用位置と図２（ｂ）に図示の収納位置とにわたって回動自在に枢支ピン１４に枢支され、使用位置においてその先端側半部が外筒１１の外周面よりも外方へ突出し、バリ取りチップ１５に形成した刃部１５ａによりバリ３を除去できるように構成され、収納位置においてバリ取りチップ１５の略全体が外筒１１の外周面よりも内側に配置されて、バリ取り工具１０を穿孔２に対して円滑に挿入できるように構成されている。なお、バリ取りチップ１５としては、外筒１１の外周面外へ突出した使用位置と、外筒１１の外周面内に没入した収納位置とに出没可能なものであれば、長方形以外の任意の形状のものを採用することができる。 Three pivot pins 14 are attached to the distal end portion of the outer cylinder 11 so as to intersect perpendicularly at a fixed distance from the axis of the outer cylinder 11. It is exposed in the center. A substantially rectangular deburring tip 15 is attached to the opening 13, and the deburring tip 15 can freely rotate between a use position shown in FIG. 2A and a storage position shown in FIG. The tip half is protruded outward from the outer peripheral surface of the outer cylinder 11 at the use position so that the burr 3 can be removed by the blade 15a formed on the deburring tip 15. The deburring tip 15 is configured so that substantially the entire deburring tip 15 is disposed on the inner side of the outer peripheral surface of the outer cylinder 11 so that the deburring tool 10 can be smoothly inserted into the perforation 2. In addition, as the deburring tip 15, any other than the rectangular shape can be used as long as the deburring tip 15 can be moved into and out of the use position protruding outside the outer peripheral surface of the outer cylinder 11 and the storage position immersed in the outer peripheral surface of the outer cylinder 11. Shapes can be used.

切換手段１６について説明すると、操作軸１２の先端近傍部には環状溝１２ｄが形成され、先端部には途中部と同径の受圧部１２ｅが形成されている。バリ取りチップ１５は、その一方の基端角部が枢支ピン１４で枢支されるとともに、一方の基端角部には環状溝１２ｄ内へ突出する尖鋭な突起１５ｂが形成され、また他方の基端角部には使用位置において受圧部１２ｅに当接して、バリ取りチップ１５の更なる回動を規制する当接部１５ｃが形成されている。この切換手段１６では、操作軸１２を外筒１１に対して軸方向の先端側へ相対移動させることで、バリ取りチップ１５の突起１５ｂが環状溝１２ｄの基端側端面１２ｆで押し操作されて、図３（ａ）に示すように、バリ取りチップ１５が収納位置に回動し、操作軸１２を外筒１１に対して軸方向の基端側へ相対移動させることで、バリ取りチップ１５の突起１５ｂが環状溝１２ｄの先端側端面１２ｇで押し操作されて、図３（ｂ）に示すように、バリ取りチップ１５が枢支ピン１４を中心に使用位置に回動することになる。また、バリ３を切削除去するときに、バリ取りチップ１５に対しては、使用位置から更に収納位置とは反対側へバリ取りチップ１５を回動させようとする力が作用するが、この力は操作軸１２の受圧部１２ｅにバリ取りチップ１５の当接部１５ｃが当接することで受け止められる。ただし、切換手段１６としては、バリ取りチップ１５を収納位置と使用位置とに切換可能な構成のものであれば、前述した以外の構成を採用することも可能で、例えば操作軸１２にラックを形成し、バリ取りチップ１５にピニオンを形成して、ラックピニオン機構により、バリ取りチップ１５を位置切換可能に構成したり、操作軸１２側に突起を形成し、バリ取りチップ１５側に凹部を形成して、バリ取りチップ１５を位置切換可能に構成したりしたものを採用することもできる。 The switching means 16 will be described. An annular groove 12d is formed in the vicinity of the distal end of the operation shaft 12, and a pressure receiving portion 12e having the same diameter as that of the intermediate portion is formed at the distal end. The deburring tip 15 has one base end corner portion pivotally supported by the pivot pin 14 and one base end corner portion having a sharp protrusion 15b protruding into the annular groove 12d. A contact portion 15c that contacts the pressure receiving portion 12e at the use position and restricts further rotation of the deburring tip 15 is formed at the base end corner portion. In this switching means 16, the operation shaft 12 is moved relative to the outer cylinder 11 toward the distal end in the axial direction, whereby the protrusion 15b of the deburring tip 15 is pushed by the proximal end surface 12f of the annular groove 12d. As shown in FIG. 3A, the deburring tip 15 is rotated to the storage position, and the operating shaft 12 is moved relative to the outer cylinder 11 toward the proximal end in the axial direction. The protrusion 15b is pushed by the tip end surface 12g of the annular groove 12d, and the deburring tip 15 is rotated about the pivot pin 14 to the use position as shown in FIG. Further, when the burr 3 is removed by cutting, a force is applied to the deburring tip 15 to rotate the deburring tip 15 from the use position to the side opposite to the storage position. Is received when the contact portion 15 c of the deburring tip 15 contacts the pressure receiving portion 12 e of the operation shaft 12. However, as the switching means 16, it is possible to adopt a configuration other than the above as long as the deburring tip 15 can be switched between the storage position and the use position. For example, a rack is provided on the operation shaft 12. Then, a pinion is formed on the deburring tip 15 and the position of the deburring tip 15 can be switched by a rack and pinion mechanism, a protrusion is formed on the operation shaft 12 side, and a recess is formed on the deburring tip 15 side. It is also possible to adopt a configuration in which the deburring tip 15 is configured to be position-switchable.

バリ取り工具１０の軸方向の途中部には、バリ取りチップ１５を収納位置と使用位置とに位置切換可能に保持するクリック機構３０が設けられている。このクリック機構３０について説明すると、操作軸１２の途中部には軸方に細長いガイド溝３１が、外筒１１に対する操作軸１２の相対移動範囲にわたって形成され、ガイド溝３１には、収納位置と使用位置とに対応する操作軸１２の軸方向位置に対応させて、保持凹部３２、３３が形成されている。外筒１１にはガイド溝３１に対応させて取付孔１１ａが形成され、取付孔１１ａにはガイド溝３１に嵌合する鋼球３４と、鋼球３４をガイド溝３１側へ付勢するバネ部材３５と、バネ部材３５の抜け止め用のプラグ３６とが奥部側から順番に取付けられている。このクリック機構３０では、操作軸１２を軸方向へ移動させると、鋼球３４がガイド溝３１に沿って移動し、図２（ａ）、図４に示すように、操作軸１２を外筒１１の先端側へ移動させて鋼球３４が基端側の保持凹部３２に係合すると、バリ取りチップ１５が収納位置に保持され、図２（ｂ）、図４に示すように、操作軸１２を外筒１１の基端側へ移動させて鋼球３４が先端側の保持凹部３３に係合すると、バリ取りチップ１５が使用位置に保持される。そして、操作軸１２をバリ取りチップ１５の収納位置又は使用位置に対応する位置に保持された状態で、バネ部材３５の付勢力に抗して操作軸１２を軸方向に操作することで、保持凹部３２、３３から鋼球３４を離脱させて、操作軸１２を軸方向に移動できるように構成されている。 A click mechanism 30 is provided in the middle of the deburring tool 10 in the axial direction to hold the deburring tip 15 so that the position can be switched between the storage position and the use position. The click mechanism 30 will be described. A guide groove 31 that is elongated in the axial direction is formed in the middle of the operation shaft 12 over a range of relative movement of the operation shaft 12 with respect to the outer cylinder 11. The holding recesses 32 and 33 are formed corresponding to the position in the axial direction of the operation shaft 12 corresponding to the position. A mounting hole 11a is formed in the outer cylinder 11 so as to correspond to the guide groove 31, and a steel ball 34 that fits in the guide groove 31 and a spring member that biases the steel ball 34 toward the guide groove 31 are formed in the mounting hole 11a. 35 and a plug 36 for retaining the spring member 35 are attached in order from the back side. In the click mechanism 30, when the operation shaft 12 is moved in the axial direction, the steel ball 34 moves along the guide groove 31, and the operation shaft 12 is moved to the outer cylinder 11 as shown in FIGS. When the steel ball 34 is engaged with the holding recess 32 on the base end side, the deburring tip 15 is held at the storage position, and the operation shaft 12 is moved as shown in FIGS. Is moved to the proximal end side of the outer cylinder 11 and the steel ball 34 is engaged with the holding recess 33 on the distal end side, the deburring tip 15 is held in the use position. The operation shaft 12 is held in the axial direction against the urging force of the spring member 35 while the operation shaft 12 is held at a position corresponding to the storage position or the use position of the deburring tip 15. The operation ball 12 can be moved in the axial direction by detaching the steel ball 34 from the recesses 32 and 33.

このバリ取り工具１０を用いたバリ３取り方法について説明すると、先ず、チャッキング部１２ａを電動工具のチャックに固定保持させる。次に、図２（ａ）に示すように、操作軸１２を外筒１１の先端側へ相対移動させて、バリ取りチップ１５を収納位置に移動させ、この状態でバリ取り工具１０を被加工物１の穿孔２内に挿入する。このとき、クリック機構３０の鋼球３４がガイド溝３１の保持凹部３２に係合して、操作軸１２の移動が規制され、バリ取りチップ１５が収納位置に保持されて、バリ取りチップ１５がその自重により使用位置側へ移動することが規制されるので、バリ取り工具１０を穿孔２に対して円滑に挿入することができる。 The burr 3 removal method using the deburring tool 10 will be described. First, the chucking portion 12a is fixedly held on the chuck of the electric tool. Next, as shown in FIG. 2A, the operating shaft 12 is moved relative to the distal end side of the outer cylinder 11 to move the deburring tip 15 to the storage position, and the deburring tool 10 is processed in this state. Insert into the perforation 2 of the object 1. At this time, the steel ball 34 of the click mechanism 30 is engaged with the holding recess 32 of the guide groove 31 to restrict the movement of the operation shaft 12, the deburring tip 15 is held at the storage position, and the deburring tip 15 is Since the movement to the use position side is restricted by its own weight, the deburring tool 10 can be smoothly inserted into the hole 2.

次に、バリ取り工具１０を穿孔２に挿入した状態で、図２（ｂ）に示すように、操作軸１２を外筒１１の基端側へ相対移動させて、バリ取りチップ１５を使用位置に回動させる。この状態で、クリック機構３０の鋼球３４がガイド溝３１の保持凹部３３に係合して、操作軸１２の移動が規制され、バリ取りチップ１５が使用位置に保持されることになる。そして、バリ取りチップ１５を使用位置に保持させた状態で、電動工具によりバリ取り工具１０を回転させながら、引き抜き方向へ移動させることで、バリ取りチップ１５の刃部１５ａで、被加工物１の裏面側において穿孔２の口縁に形成されたバリ３を除去することになる。このように、バリ取り工具１０を後方へ移動させることで、穿孔２の口縁に沿って形成されるバリ３を除去できるので、従来のように球状の砥石等を用いてバリ３を除去する場合と比較して、簡単な操作で、しかも短時間で綺麗にバリ３を除去することが可能となる。 Next, with the deburring tool 10 inserted into the perforation 2, as shown in FIG. 2 (b), the operation shaft 12 is relatively moved toward the base end side of the outer cylinder 11, and the deburring tip 15 is used. Turn to. In this state, the steel ball 34 of the click mechanism 30 engages with the holding recess 33 of the guide groove 31, so that the movement of the operation shaft 12 is restricted and the deburring tip 15 is held at the use position. Then, in a state where the deburring tip 15 is held at the use position, the workpiece 1 is moved by the blade portion 15a of the deburring tip 15 by moving the deburring tool 10 in the pulling direction while rotating the deburring tool 10 with an electric tool. The burr 3 formed at the lip of the perforation 2 on the back surface side of the hole is removed. Thus, by moving the deburring tool 10 rearward, the burr 3 formed along the lip of the perforation 2 can be removed, so that the burr 3 is removed using a spherical grindstone or the like as in the prior art. Compared to the case, it is possible to remove the burrs 3 neatly with a simple operation and in a short time.

こうして、バリ３を除去した後、バリ取り工具１０を停止させ、図２（ａ）に示すように、操作軸１２を外筒１１の先端側へ相対移動させて、バリ取りチップ１５を収納位置に移動させた状態で、バリ取り工具１０を被加工物１の穿孔２から抜き取ることになる。また、複数の穿孔２のバリ３を除去する場合には、前記作業を繰り返して、複数の穿孔２のバリ３を順次除去することになる。 In this way, after removing the burr 3, the deburring tool 10 is stopped, and the operation shaft 12 is moved relative to the distal end side of the outer cylinder 11 as shown in FIG. The deburring tool 10 is extracted from the perforation 2 of the workpiece 1 in the state of being moved to. Further, when removing the burrs 3 of the plurality of perforations 2, the above operation is repeated, and the burrs 3 of the plurality of perforations 2 are sequentially removed.

なお、バリ３取り装置に対して、次のような構成の位置決め手段４０を設けることもできる。図７に示すように、この位置決め手段４０は、外筒１１に対して軸方向に移動自在に装着される位置調整リング４１と、位置調整リング４１を外筒１１の所望の軸方向位置に固定する固定ネジ４２と、位置調整リング４１よりも外筒１１の先端側に軸方向に移動自在に外装されたベアリング４３と、穿孔２の端部に嵌合して穿孔２と同心状に位置決めされる円錐部４４ａを有し、ベアリング４３を介して外筒１１に回転自在に外嵌される位置決め部材４４と、位置調整リング４１と位置決め部材４４間に設けられて位置決め部材４４を外筒１１の先端側へ付勢する圧縮バネ４５と、圧縮バネ４５と位置決め部材４４間に介装したスラストベアリング４６とを備えている。 In addition, the positioning means 40 having the following configuration can be provided for the deburring device 3. As shown in FIG. 7, the positioning means 40 includes a position adjustment ring 41 that is attached to the outer cylinder 11 so as to be movable in the axial direction, and fixes the position adjustment ring 41 to a desired axial position of the outer cylinder 11. The fixing screw 42 to be mounted, the bearing 43 which is externally mounted on the distal end side of the outer cylinder 11 with respect to the position adjustment ring 41, and the end of the perforation 2 are fitted and positioned concentrically with the perforation 2. A positioning member 44 that is rotatably fitted to the outer cylinder 11 via a bearing 43, and a positioning member 44 that is provided between the position adjustment ring 41 and the positioning member 44. A compression spring 45 that is biased toward the distal end side, and a thrust bearing 46 interposed between the compression spring 45 and the positioning member 44 are provided.

この位置決め手段４０を設けたバリ取り工具１０では、図７（ａ）に示すように、前述と同様にして、バリ取りチップ１５を収納位置に保持した状態で、バリ取り工具１０を被加工物１の穿孔２に挿入し、その後、図７（ｂ）に示すように、バリ取りチップ１５を使用位置に回動させる。そして、この状態で、位置調整リング４１を外筒１１の先端側へ移動させて、圧縮バネ４５が一定量だけ圧縮されるまで、位置決め部材４４を外筒１１の先端側へ移動させ、円錐部４４ａを穿孔２の表面側の口縁に嵌合させる。そして、円錐部４４ａとバリ取りチップ１５間に圧縮バネ４５の付勢力で被加工物１が挟持されるまで、位置調整リング４１を外筒１１の先端側へ移動させてから、固定ネジ４２で位置調整リング４１を外筒１１に固定する。 In the deburring tool 10 provided with the positioning means 40, as shown in FIG. 7A, the deburring tool 10 is held in the state where the deburring tip 15 is held in the storage position as described above. Then, as shown in FIG. 7B, the deburring tip 15 is rotated to the use position. In this state, the position adjusting ring 41 is moved to the distal end side of the outer cylinder 11, and the positioning member 44 is moved to the distal end side of the outer cylinder 11 until the compression spring 45 is compressed by a certain amount, and the conical portion 44 a is fitted to the front edge of the hole 2. The position adjusting ring 41 is moved toward the distal end side of the outer cylinder 11 until the workpiece 1 is clamped between the conical portion 44a and the deburring tip 15 by the urging force of the compression spring 45, and then the fixing screw 42 is used. The position adjustment ring 41 is fixed to the outer cylinder 11.

こうして位置決め手段４０をバリ取り工具１０に取り付けてから、圧縮バネ４５の付勢力に抗して穿孔２の奥部側へ外筒１１を押し込んで、バリ取りチップ１５を被加工物１から離間させた状態で、電動工具にてバリ取り工具１０を回転させ、圧縮バネ４５の付勢力で、外筒１１を引く抜き方向へ移動させながらバリ３を除去することになる。このとき、バリ取り工具１０の基部側は位置決め部材４４の円錐部４４ａで穿孔２と同心状に位置決めされるので、円滑にバリ３を除去することできる。また、バリ取り工具１０を穿孔２から抜き取るときには、圧縮バネ４５の付勢力に抗してバリ取り工具１０を穿孔２の奥部側へ移動させてから、バリ取りチップ１５を収納位置へ移動させて抜き取ることになり、次のバリ取り作業で、異なる厚さの被加工物１に形成した穿孔２のバリ３を除去する際には、前記と同様に、位置決め手段４０の取り付け位置を調整することになるが、同じ厚さの被加工物１に形成した穿孔２のバリ３を除去する際には、位置調整リング４１の位置を調整することなく、前記と同様に、円錐部４４ａとバリ取りチップ１５間に圧縮バネ４５の付勢力で被加工物１を挟持させて、バリ３を除去することができる。つまり、位置決め手段４０の取り付け位置を一旦調整すると、バリ取り工具１０を複数の穿孔２に対して順次位置決めしながら、穿孔２の裏面側のバリ３を除去することができる。 After the positioning means 40 is attached to the deburring tool 10 in this way, the outer cylinder 11 is pushed into the back side of the perforation 2 against the urging force of the compression spring 45 to separate the deburring tip 15 from the workpiece 1. In this state, the deburring tool 10 is rotated by the electric tool, and the burrs 3 are removed while the outer cylinder 11 is moved in the pulling direction by the urging force of the compression spring 45. At this time, since the base side of the deburring tool 10 is positioned concentrically with the perforation 2 by the conical portion 44a of the positioning member 44, the burr 3 can be removed smoothly. Further, when removing the deburring tool 10 from the perforation 2, the deburring tool 10 is moved to the back side of the perforation 2 against the biasing force of the compression spring 45, and then the deburring tip 15 is moved to the storage position. When removing the burrs 3 of the perforations 2 formed on the workpiece 1 having different thicknesses in the next deburring operation, the mounting position of the positioning means 40 is adjusted in the same manner as described above. However, when removing the burr 3 of the perforation 2 formed in the workpiece 1 having the same thickness, the position of the position adjustment ring 41 is not adjusted, and the conical portion 44a and the burr 3 are the same as described above. The workpiece 1 can be held between the take-up chips 15 by the urging force of the compression spring 45, and the burr 3 can be removed. That is, once the attachment position of the positioning means 40 is adjusted, the burr 3 on the back surface side of the hole 2 can be removed while the deburring tool 10 is sequentially positioned with respect to the plurality of holes 2.

（第２実施例）
図８〜図１０に示すように、このバリ取り工具５０は、被加工物１に形成した穿孔２に挿通可能な外筒５１と、外筒５１に対して軸方向に移動自在に内嵌した操作軸５２と、操作軸５２を外筒５１に対して軸方向に操作するための操作手段５３と、外筒５１の先端部に周方向に間隔をあけて形成した複数の開口部５４に枢支ピン５５を介して回動自在に装着されて、外筒５１外へ突出した使用位置と、外筒５１内に収納した収納位置とに出没可能なバリ取りチップ５６と、操作軸５２とバリ取りチップ５６とに設けられ、操作軸５２の軸方向への操作により、バリ取りチップ５６を使用位置と収納位置とに切換可能な切換手段５７とを備えている。 (Second embodiment)
As shown in FIGS. 8 to 10, the deburring tool 50 is internally fitted to an outer cylinder 51 that can be inserted into the perforation 2 formed in the workpiece 1, and to be movable in the axial direction with respect to the outer cylinder 51. The operation shaft 52, the operation means 53 for operating the operation shaft 52 in the axial direction with respect to the outer cylinder 51, and a plurality of openings 54 formed at the distal end portion of the outer cylinder 51 at intervals in the circumferential direction. A deburring tip 56 that is rotatably mounted via a support pin 55 and can protrude and retract to a use position protruding out of the outer cylinder 51 and a storage position stored in the outer cylinder 51, an operation shaft 52, and a burr. The deburring tip 56 is provided with switching means 57 that can switch the deburring tip 56 between the use position and the storage position by operating the operation shaft 52 in the axial direction.

外筒５１は、被加工物１に形成した穿孔２よりも小径な筒状部材で構成され、外筒５１の中央部には貫通孔６０が全長にわたって形成されている。外筒５１の先端部には軸方向に延びる３本のスリット６１が周方向に一定間隔おきに形成され、外筒５１の先端部には円板状のカバー部材６２がビス６３で固定されている。外筒５１の先端部にカバー部材６２を固定した状態で、スリット６１により貫通孔６０に連通する角孔状の開口部５４が形成される。開口部５４の個数は、本実施の形態では３個に設定したが、バリ取りチップ５６の個数に応じた任意の個数に設定することができる。ただし、バリを切削除去するときにおける切削バランスを考慮して、周方向に一定間隔おきに複数本設けることが好ましい。なお、カバー部材６２は、前記第１実施例のガイド部材２２と同様に尖鋭に構成することも可能であるし、省略することも可能である。 The outer cylinder 51 is composed of a cylindrical member having a smaller diameter than the perforations 2 formed in the workpiece 1, and a through hole 60 is formed in the central portion of the outer cylinder 51 over the entire length. Three slits 61 extending in the axial direction are formed at regular intervals in the distal end portion of the outer cylinder 51, and a disk-shaped cover member 62 is fixed to the distal end portion of the outer cylinder 51 with screws 63. Yes. In a state where the cover member 62 is fixed to the distal end portion of the outer cylinder 51, a rectangular hole-shaped opening 54 that communicates with the through hole 60 is formed by the slit 61. Although the number of openings 54 is set to three in the present embodiment, it can be set to an arbitrary number corresponding to the number of deburring tips 56. However, it is preferable to provide a plurality of burrs at regular intervals in the circumferential direction in consideration of the cutting balance when cutting and removing burrs. The cover member 62 can be sharply configured as in the case of the guide member 22 of the first embodiment, or can be omitted.

外筒５１の貫通孔６０の基部側にはネジ孔６４が形成され、ネジ孔６４の基端部にはプラグ６５がネジ部６５ａにおいて締結固定されている。プラグ６５には外方へ突出するチャッキング部６５ｂが外筒５１と同軸上に設けられ、このチャッキング部６５ｂを図示外の電動工具のチャックで挟持して、外筒５１を回転操作できるように構成されている。 A screw hole 64 is formed on the base side of the through hole 60 of the outer cylinder 51, and a plug 65 is fastened and fixed to the base end portion of the screw hole 64 at a screw portion 65a. The plug 65 is provided with a chucking portion 65b protruding outward coaxially with the outer cylinder 51. The chucking portion 65b is sandwiched by a chuck of an electric tool (not shown) so that the outer cylinder 51 can be rotated. It is configured.

外筒５１の後端近傍部にはリング状の操作部材６６が軸方向に移動自在に外嵌され、外筒５１の後端近傍部には軸方向に細長い１対のガイドスリット７０が形成され、操作軸５２の基端部には挿通孔５２ａが軸心直交方向に形成され、挿通孔５２ａにはガイドスリット７０を通って操作部材６６に連結される連結ピン６７が取り付けられ、操作部材６６及び操作軸５２はガイドスリット７０及び連結ピン６７を介して一定長さだけ軸方向に移動自在で且つ相対回転不能に外筒５１に取り付けられている。 A ring-shaped operation member 66 is externally fitted in the vicinity of the rear end of the outer cylinder 51 so as to be movable in the axial direction, and a pair of guide slits 70 elongated in the axial direction are formed in the vicinity of the rear end of the outer cylinder 51. An insertion hole 52a is formed in the base end portion of the operation shaft 52 in a direction orthogonal to the axial center, and a connection pin 67 connected to the operation member 66 through the guide slit 70 is attached to the insertion hole 52a. The operation shaft 52 is attached to the outer cylinder 51 through a guide slit 70 and a connecting pin 67 so as to be movable in the axial direction by a predetermined length and not to be relatively rotatable.

操作軸５２の途中部には鍔部５２ｂが形成され、ネジ孔６４の奥部には操作軸５２の途中部が挿通するリング状のネジ部材６８が装着され、鍔部５２ｂとネジ部材６８間には操作軸５２を外筒５１に対して先端側へ常時付勢するバネ部材６９が設けられている。 A flange portion 52 b is formed in the middle of the operation shaft 52, and a ring-shaped screw member 68 through which the middle portion of the operation shaft 52 is inserted is attached to the back of the screw hole 64, and between the flange portion 52 b and the screw member 68. Is provided with a spring member 69 that constantly urges the operation shaft 52 toward the distal end side with respect to the outer cylinder 51.

外筒５１の先端部には３本の枢支ピン５５が、外筒５１の軸芯から一定距離あけて直交状に交差するように取り付けられ、枢支ピン５５の途中部は開口部５４の中央部内に露出されている。開口部５４には略長方形状のバリ取りチップ５６が装着され、バリ取りチップ５６は、図９（ａ）に図示の使用位置と図９（ｂ）に図示の収納位置とにわたって回動自在に枢支ピン５５に枢支され、使用位置においてその先端側半部が外筒５１の外周面よりも外方へ突出し、バリ取りチップ５６に形成した刃部５６ａによりバリ３を除去できるように構成され、収納位置においてバリ取りチップ５６の略全体が外筒５１の外周面よりも内側に配置されて、バリ取り工具５０を穿孔２に対して円滑に挿入できるように構成されている。なお、バリ取りチップ５６としては、外筒５１の外周面外へ突出した使用位置と、外筒５１の外周面内に没入した収納位置とに出没可能なものであれば、長方形以外の任意の形状のものを採用することができる。 Three pivot pins 55 are attached to the distal end portion of the outer cylinder 51 so as to intersect at right angles with a certain distance from the axis of the outer cylinder 51. It is exposed in the center. A substantially rectangular deburring tip 56 is attached to the opening 54, and the deburring tip 56 is rotatable between a use position shown in FIG. 9A and a storage position shown in FIG. 9B. It is pivotally supported by the pivot pin 55, and its tip half is projected outward from the outer peripheral surface of the outer cylinder 51 at the use position, and the burr 3 can be removed by the blade 56 a formed on the deburring tip 56. In the storage position, substantially the entire deburring tip 56 is arranged on the inner side of the outer peripheral surface of the outer cylinder 51 so that the deburring tool 50 can be smoothly inserted into the perforation 2. The deburring tip 56 may be any other shape than a rectangle as long as it can be moved into and out of the use position protruding out of the outer peripheral surface of the outer cylinder 51 and the storage position immersed in the outer peripheral surface of the outer cylinder 51. A shape can be adopted.

切換手段５７について説明すると、操作軸５２の先端近傍部には環状溝５２ｃが形成され、操作軸５２の先端部にはやや大径の切換部５２ｄが形成されている。バリ取りチップ５６は、その一方の基端角部が枢支ピン５５で枢支されるとともに、該一方の基端角部には突起５６ｂが形成されている。この切換手段５７では、操作部材６６とともに操作軸５２がバネ部材６９の付勢力により外筒５１の軸方向の先端側へ相対移動することで、バリ取りチップ５６の突起５６ｂが環状溝５２ｃの基端側端面５２ｅで押し操作されて、図９（ａ）に示すように、バリ取りチップ５６が枢支ピン５５を中心として使用位置に回動し、操作部材６６とともに操作軸５２をバネ部材６９の付勢力に抗して外筒５１の軸方向の基端側へ相対移動させることで、バリ取りチップ５６の突起５６ｂが環状溝５２ｃの先端側端面５２ｆで押し操作されて、図９（ｂ）に示すように、バリ取りチップ５６がバリ取りチップ５６が枢支ピン５５を中心として収納位置に回動することになる。また、バリ３を除去するときに、バリ取りチップ５６に対しては、使用位置から更に収納位置とは反対側へバリ取りチップ５６を回動させようとする力が作用するが、この力はバリ取りチップ５６の基端面が操作軸５２の外周面に当接することで受け止められる。ただし、切換手段５７としては、バリ取りチップ５６を収納位置と使用位置とに切換可能な構成のものであれば、前述した以外の構成を採用することも可能で、例えば操作軸５２にラックを形成し、バリ取りチップ５６にピニオンを形成して、ラックピニオン機構により、バリ取りチップ５６を位置切換可能に構成したり、操作軸５２側に突起５６ｂを形成し、バリ取りチップ５６側に凹部を形成して、バリ取りチップ５６を位置切換可能に構成したりしたものを採用することもできる。 The switching means 57 will be described. An annular groove 52 c is formed in the vicinity of the distal end of the operation shaft 52, and a slightly large diameter switching portion 52 d is formed in the distal end portion of the operation shaft 52. One base end corner of the deburring tip 56 is pivotally supported by a pivot pin 55, and a projection 56b is formed on the one base end corner. In this switching means 57, the operating shaft 52 and the operating shaft 52 are moved relative to the distal end side in the axial direction of the outer cylinder 51 by the urging force of the spring member 69, so that the protrusion 56 b of the deburring tip 56 is based on the annular groove 52 c. As shown in FIG. 9A, the deburring tip 56 is rotated to the use position with the pivot pin 55 as the center, and the operation shaft 52 is moved together with the operation member 66 to the spring member 69. 9B, the protrusion 56b of the deburring tip 56 is pushed by the front end side end surface 52f of the annular groove 52c, and is moved relative to the axial base end side of the outer cylinder 51 against the urging force of FIG. ), The deburring tip 56 rotates to the storage position around the pivot pin 55. Further, when removing the burr 3, a force is applied to the deburring tip 56 to further rotate the deburring tip 56 from the use position to the side opposite to the storage position. The base end surface of the deburring tip 56 is received by contacting the outer peripheral surface of the operation shaft 52. However, as the switching means 57, a configuration other than those described above can be adopted as long as the deburring tip 56 can be switched between the storage position and the use position. The deburring tip 56 is formed, a pinion is formed, and the position of the deburring tip 56 can be switched by a rack and pinion mechanism, a projection 56b is formed on the operation shaft 52 side, and a recess is formed on the deburring tip 56 side. It is also possible to adopt a configuration in which the deburring tip 56 is configured to be position-switchable.

このバリ取り工具５０を用いたバリ取り方法について説明すると、先ず、チャッキング部６５ｂを電動工具のチャックに固定保持させる。次に、図９（ｂ）に示すように、操作部材６６を操作して、操作軸５２をバネ部材６９の付勢力に抗して外筒５１の基端側へ相対移動させ、バリ取りチップ５６を収納位置に移動させた状態で、バリ取り工具５０を被加工物１の穿孔２内に挿入する。このように、操作部材６６を操作してバリ取りチップ５６を収納位置に保持させているので、バリ取りチップ５６がその自重により使用位置側へ移動することが規制されるので、バリ取り工具５０を穿孔２に対して円滑に挿入することができる。 The deburring method using the deburring tool 50 will be described. First, the chucking portion 65b is fixedly held on the chuck of the electric tool. Next, as shown in FIG. 9B, the operation member 66 is operated, and the operation shaft 52 is moved relative to the proximal end side of the outer cylinder 51 against the urging force of the spring member 69, and the deburring tip is moved. The deburring tool 50 is inserted into the perforation 2 of the workpiece 1 with the 56 being moved to the storage position. As described above, since the operation member 66 is operated to hold the deburring tip 56 in the storage position, the deburring tip 56 is restricted from moving to the use position side by its own weight. Can be smoothly inserted into the perforations 2.

次に、バリ取り工具５０を穿孔２に挿入した状態で、操作部材６６から手を離し、図９（ａ）に示すように、操作軸５２をバネ部材６９の付勢力により外筒５１の先端側へ相対移動させ、バリ取りチップ５６を使用位置に回動させる。そして、バリ取りチップ５６を使用位置に保持させた状態で、電動工具によりバリ取り工具５０を回転させながら、バリ取り工具５０を引き抜き方向へ移動させることで、バリ取りチップ５６の刃部５６ａで、被加工物１の裏面側において穿孔２の口縁に形成されたバリ３を除去することになる。このように、バリ取り工具５０を抜き取り方向へ移動させることで、穿孔２の口縁に沿って形成されるバリ３を除去できるので、従来のように球状の砥石等を用いてバリ３を除去する場合と比較して、簡単な操作で、しかも短時間で綺麗にバリ３を除去することが可能となる。 Next, with the deburring tool 50 inserted into the perforation 2, the hand is released from the operating member 66, and the operating shaft 52 is moved by the urging force of the spring member 69 as shown in FIG. The deburring tip 56 is rotated to the use position. Then, with the deburring tip 56 held in the use position, the deburring tool 50 is moved in the pulling direction while rotating the deburring tool 50 with the electric tool, so that the blade portion 56a of the deburring tip 56 The burr 3 formed on the rim of the perforation 2 on the back side of the workpiece 1 is removed. In this way, by moving the deburring tool 50 in the extraction direction, the burr 3 formed along the edge of the perforation 2 can be removed, so the burr 3 is removed using a spherical grindstone or the like as in the past. Compared with the case where it does, it becomes possible to remove the burr | flash 3 neatly by simple operation and also in a short time.

こうして、バリ３を除去した後、バリ取り工具５０を停止させ、図９（ｂ）に示すように、操作部材６６により、操作軸５２を外筒５１の基端側へ相対移動させて、バリ取りチップ５６を収納位置に移動させた状態で、バリ取り工具５０を被加工物１の穿孔２から抜き取ることになる。また、複数の穿孔２のバリ３を除去する場合には、前記作業を繰り返して、複数の穿孔２のバリ３を順次除去することになる。なお、この第２実施例のバリ取り工具５０に対しても、前記第１実施例と同様の位置決め手段４０を備えさせることができる。 After removing the burr 3 in this way, the deburring tool 50 is stopped, and the operation shaft 52 is moved relative to the proximal end side of the outer cylinder 51 by the operation member 66 as shown in FIG. The deburring tool 50 is extracted from the perforation 2 of the workpiece 1 in a state where the cutting tip 56 is moved to the storage position. Further, when removing the burrs 3 of the plurality of perforations 2, the above operation is repeated, and the burrs 3 of the plurality of perforations 2 are sequentially removed. The deburring tool 50 of the second embodiment can be provided with the positioning means 40 similar to that of the first embodiment.

１被加工物２穿孔
３バリ
１０バリ取り工具
１１外筒１１ａ取付孔
１２操作軸１２ａチャッキング部
１２ｂ大径軸部１２ｃスプライン突条
１２ｄ環状溝１２ｅ受圧部
１２ｆ基端側端面１２ｇ先端側端面
１３開口部１４枢支ピン
１５バリ取りチップ１５ａ刃部
１５ｂ突起１５ｃ当接部
１６切換手段
２０貫通孔２０ａ基部貫通孔
２０ｂスプライン溝２１スリット
２２ガイド部材２２ａ脚部
２３ビス２４段差部
２５スナップリング
３０クリック機構３１ガイド溝
３２保持凹部３３保持凹部
３４鋼球３５バネ部材
３６プラグ
４０位置決め手段４１位置調整リング
４２固定ネジ４３ベアリング
４４位置決め部材４４ａ円錐部
４５圧縮バネ４６スラストベアリング
５０バリ取り工具５１外筒
５２操作軸５２ａ挿通孔
５２ｂ鍔部５２ｃ環状溝
５２ｄ切換部５２ｅ基端側端面
５２ｆ先端側端面
５３操作手段５４開口部
５５枢支ピン５６バリ取りチップ
５６ａ刃部５６ｂ突起
５７切換手段
６０貫通孔６１スリット
６２カバー部材６３ビス
６４ネジ孔６５プラグ
６５ａネジ部６５ｂチャッキング部
６６操作部材６７連結ピン
６８ネジ部材６９バネ部材
７０ガイドスリット
DESCRIPTION OF SYMBOLS 1 Workpiece 2 Drilling 3 Deburring 10 Deburring tool 11 Outer cylinder 11a Mounting hole 12 Operation shaft 12a Chucking part 12b Large diameter shaft part 12c Spline protrusion 12d Annular groove 12e Pressure receiving part 12f Base end side end face 12g Tip end side end face 13 Opening portion 14 Pivoting pin 15 Deburring tip 15a Blade portion 15b Protrusion 15c Contacting portion 16 Switching means 20 Through hole 20a Base through hole 20b Spline groove 21 Slit 22 Guide member 22a Leg portion 23 Screw 24 Stepped portion 25 Snap ring 30 Click Mechanism 31 Guide groove 32 Holding recess 33 Holding recess 34 Steel ball 35 Spring member 36 Plug 40 Positioning means 41 Position adjusting ring 42 Fixing screw 43 Bearing 44 Positioning member 44a Conical portion 45 Compression spring 46 Thrust bearing 50 Deburring tool 51 Outer cylinder 52 Operation axis 52 a insertion hole 52b flange 52c annular groove 52d switching part 52e proximal end face 52f distal end face 53 operating means 54 opening 55 pivot pin 56 deburring tip 56a blade part 56b protrusion 57 switching means 60 through hole 61 slit 62 cover Member 63 Screw 64 Screw hole 65 Plug 65a Screw part 65b Chucking part 66 Operation member 67 Connecting pin 68 Screw member 69 Spring member 70 Guide slit

Claims

被加工物の穿孔時に発生した裏側のバリを表側から除去するバリ取り工具であって、
前記穿孔に挿通可能な外筒と、
前記外筒に対して軸方向に移動自在で且つ相対回転不能に内嵌した操作軸と、
前記外筒の先端部に周方向に間隔をあけて形成した複数の開口部に枢支ピンを介して回動自在に装着されて、外筒外へ突出した使用位置と、外筒内に収納した収納位置とに出没可能なバリ取りチップと、
前記操作軸とバリ取りチップとに設けられ、操作軸の軸方向への操作により、バリ取りチップを使用位置と収納位置とに切換可能な切換手段と、
を備えたことを特徴とするバリ取り工具。 A deburring tool that removes from the front side burrs generated during drilling of the workpiece,
An outer cylinder that can be inserted into the perforation;
An operating shaft that is axially movable with respect to the outer cylinder and is fitted so as not to be relatively rotatable.
A plurality of openings formed circumferentially spaced at the distal end of the outer cylinder are pivotally mounted via pivot pins, and are used to protrude out of the outer cylinder, and stored in the outer cylinder. A deburring tip that can appear in the storage position
Switching means provided on the operating shaft and the deburring tip, and capable of switching the deburring tip between the use position and the storage position by an operation in the axial direction of the operating shaft;
A deburring tool characterized by comprising:

前記切換手段として、操作軸の先端近傍部に環状溝を形成し、バリ取りチップの基端部に環状溝に挿入される突起を形成した請求項１記載のバリ取り工具。 2. The deburring tool according to claim 1, wherein an annular groove is formed in the vicinity of the distal end of the operation shaft as the switching means, and a protrusion to be inserted into the annular groove is formed at the proximal end portion of the deburring tip.

前記バリ取りチップの一方の基端角部を前記枢支ピンで枢支し、バリ取りチップの他方の基端角部に、バリ取りチップを使用位置に保持した状態で、操作軸の先端外周面に当接する当接部を形成した請求項１又は２記載のバリ取り工具。 One of the base end corners of the deburring tip is pivotally supported by the pivot pin, and the deburring tip is held at the use position on the other base end corner of the deburring tip. The deburring tool according to claim 1, wherein a contact portion that contacts the surface is formed.

前記外筒に対する操作軸の移動を規制して、バリ取りチップを使用位置と収納位置とに位置切換可能に保持するクリック機構を設けた請求項１〜３のいずれか１項記載のバリ取り工具。 The deburring tool according to any one of claims 1 to 3, further comprising a click mechanism that restricts movement of the operation shaft relative to the outer cylinder and holds the deburring tip between a use position and a storage position so as to be switchable. .

前記被加工物の表面側における穿孔の口縁に嵌合して外筒の基部側を穿孔に回転自在に位置決めする位置決め手段を設けた請求項１〜４のいずれか１項記載のバリ取り工具。 The deburring tool according to any one of claims 1 to 4, further comprising a positioning unit that is fitted to a rim of a perforation on the surface side of the workpiece and rotatably positions the base side of the outer cylinder in the perforation. .

前記操作軸の基端部に外筒から外方へ突出して、電動機のチャックに着脱自在に保持されるチャッキング部を形成した請求項１〜５のいずれか１項記載のバリ取り工具。 The deburring tool according to any one of claims 1 to 5, wherein a chucking portion that protrudes outward from an outer cylinder and is detachably held by a chuck of an electric motor is formed at a base end portion of the operation shaft.

前記外筒の先端部に円錐状のガイド部材を取り付けた請求項１〜６のいずれか１項記載のバリ取り工具。
The deburring tool of any one of Claims 1-6 which attached the conical guide member to the front-end | tip part of the said outer cylinder.