JP2008119761A - Deburring tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To deburr certainly an edge part between intersecting planes. <P>SOLUTION: The shank of a tool T is furnished with a first cutting edge 1, a second cutting edge 2, and a third cutting edge 3 in the sequence from the forefront, wherein the first cutting edge 1 has a square outside shape on its cross-section, and four ridges 5 are formed to assume angles viewed in the axial direction. The peripheral surface of the first cutting edge 1 is provided with a plurality of grooves at a certain spacing in the axial direction, wherein the inner surface of the groove at its forefront is tapered. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、ダイカスト成形品等のワークに対してバリ取り加工を行うために用いられるバリ取り用ツールに関する。   The present invention relates to a deburring tool used for deburring a workpiece such as a die cast product.

バリ取り用ツール（以下単に「ツール」という。）は、多関節ロボットのアームの先端に、回転及び所定のストロークで往復動可能な駆動機構と共に装着され、セットされたワークに対して予めティーチングされた加工軌跡でツールが回転及び往復動しながら移動するようにアームを動作させることで、ワークのバリを除去することができる。このツールとしては、特許文献１に示すように、横断面円形の丸棒体の表面に、複数の溝を軸方向へ所定間隔をおいて複数形成してなるものが知られている。   A deburring tool (hereinafter simply referred to as “tool”) is attached to the tip of an arm of an articulated robot together with a drive mechanism that can rotate and reciprocate with a predetermined stroke, and is taught in advance to a set workpiece. By operating the arm so that the tool moves while rotating and reciprocating along the machining path, the workpiece burr can be removed. As this tool, as shown in Patent Document 1, a tool is known in which a plurality of grooves are formed on the surface of a round bar having a circular cross section at predetermined intervals in the axial direction.

特開２００４−７４３７１号公報JP 2004-74371 A

上記ツールにおいては、横断面が円形であるため、ワークの稜線等の輪郭形状に生じるバリは効率良く除去することができるが、角穴のコーナー部といった交差面間の際部に生じるバリを完全に除去することができない。よって、残ったバリを人手で取り除いたりする必要があって作業効率を低下させていた。   In the above tool, since the cross section is circular, burrs generated in the contour shape of the workpiece ridge line and the like can be efficiently removed, but the burrs generated at the intersection between the intersecting surfaces such as the corners of the square holes are completely removed. Can not be removed. Therefore, it is necessary to manually remove the remaining burrs, which reduces work efficiency.

そこで、本発明は、交差面間の際部のバリも確実に除去でき、作業効率の向上に寄与できるツールを提供することを目的としたものである。   In view of the above, an object of the present invention is to provide a tool that can reliably remove burrs at the intersection between intersecting surfaces and contribute to improvement in work efficiency.

上記目的を達成するために、請求項１に記載の発明は、複数の溝を軸方向へ所定間隔で周設した刃部を有する軸体からなり、刃部の少なくとも一部に、軸方向から見て角となる稜線部を少なくとも一カ所形成したことを特徴とするものである。
請求項２に記載の発明は、請求項１の目的に加えて、より使い勝手の良いツールとするために、軸体の先端に、４つの稜線部が形成される横断面外形が正方形の第１の刃部を形成し、その後方に、第１の刃部よりも大径で、横断面外形が円形となる第２の刃部を形成したものである。 In order to achieve the above object, the invention according to claim 1 is composed of a shaft body having a blade portion in which a plurality of grooves are provided at predetermined intervals in the axial direction, and at least a part of the blade portion is formed from the axial direction. It is characterized in that at least one ridge line portion that becomes a corner when viewed is formed.
In addition to the object of the first aspect, the invention according to the second aspect is a first in which the cross-sectional outer shape in which four ridge lines are formed at the tip of the shaft body is a square in order to make the tool more user-friendly. And a second blade portion having a larger diameter than the first blade portion and a circular cross-sectional outer shape is formed behind the blade portion.

請求項１に記載の発明によれば、刃部の稜線部を利用して交差面間の際部のバリも確実に除去でき、作業効率が向上する。
請求項２に記載の発明によれば、請求項１の効果に加えて、際部のバリは第１の刃部で、輪郭形状でのバリは第２の刃部でバリ取りを行うといった使い分けが可能となり、より使い勝手が良好となる。
According to invention of Claim 1, the burr | flash of the edge part between intersection surfaces can be reliably removed using the ridgeline part of a blade part, and working efficiency improves.
According to the second aspect of the present invention, in addition to the effect of the first aspect, the burrs at the end are deburred by the first blade and the burrs in the contour shape are deburred by the second blade. Can be made more convenient.

以下、本発明の実施の形態を図面に基づいて説明する。
図１は、本発明のツールの一例を示す説明図で、左が正面、右が側面を夫々示す。ツールＴは、軸体に第１の刃部１，第２の刃部２，第３の刃部３を先端から順に形成し、後方にシャフト部４を形成してなる。
まず第１の刃部１は、横断面外形が正方形に形成されて、軸方向から見て角となる４つの稜線部５，５・・が形成されるようになっている。また、第１の刃部１の周面には、Ａ部を拡大して示す図２（Ａ）のように、先端側の内面がテーパとなる溝６，６・・が、軸方向へ所定間隔をおいて複数形成されて、周面における溝６の後方端縁際にエッジ７，７・・を夫々形成している。８は、第１の刃部１の先端面に形成された面取部である。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an explanatory view showing an example of the tool of the present invention, in which the left shows the front and the right shows the side. The tool T is formed by forming a first blade portion 1, a second blade portion 2, and a third blade portion 3 in order from the tip on a shaft body, and forming a shaft portion 4 on the rear side.
First, the first blade portion 1 has a square cross-sectional outer shape and is formed with four ridge line portions 5, 5,... That are corners when viewed from the axial direction. Further, on the peripheral surface of the first blade portion 1, as shown in FIG. 2 (A) showing an enlarged portion A, grooves 6, 6,... Whose inner surface on the tip side is tapered are predetermined in the axial direction. A plurality are formed at intervals, and edges 7, 7,... Are formed near the rear edge of the groove 6 on the peripheral surface. Reference numeral 8 denotes a chamfered portion formed on the tip surface of the first blade portion 1.

第２，第３の刃部２，３は、テーパ部９を介して第１の刃部１の後方で連続状に、且つ第１の刃部１よりも大径で横断面外形が円形となるように形成されている。この第２、第３の刃部２，３の周面にも、Ｂ部及びＣ部を拡大して示す図２（Ｂ）（Ｃ）のように、先端側の内面がテーパとなる溝１０，１１が、軸方向へ所定間隔をおいて複数形成されて、周面における各溝１０，１１の後方端縁際にエッジ１２，１２・・を夫々形成している。但しここでは、第２の刃部２よりも第３の刃部３の方が溝１１のピッチが大きくなっている。
なお、ダイカスト製品に用いるツールＴの実施例としては、全長が２００ｍｍ、第１の刃部１が５ｍｍ角で長さ３０ｍｍ、第２、第３の刃部２，３が夫々８ｍｍ径で長さが３０ｍｍ、２４ｍｍのもの等が採用される。 The second and third blade portions 2 and 3 are continuous at the rear of the first blade portion 1 through the taper portion 9, and have a larger diameter than the first blade portion 1 and a circular cross-sectional outer shape. It is formed to become. As shown in FIGS. 2B and 2C in which the B portion and the C portion are enlarged on the peripheral surfaces of the second and third blade portions 2 and 3, the groove 10 in which the inner surface on the tip side is tapered , 11 are formed at predetermined intervals in the axial direction, and edges 12, 12,... Are formed at the peripheral edges of the grooves 10, 11, respectively. However, here, the pitch of the grooves 11 is larger in the third blade portion 3 than in the second blade portion 2.
As an example of the tool T used for the die-cast product, the total length is 200 mm, the first blade part 1 is 5 mm square and the length is 30 mm, and the second and third blade parts 2 and 3 are each 8 mm in diameter and length. 30 mm, 24 mm, etc. are employed.

以上の如く構成されたツールＴは、例えば多関節ロボットのアームに装着して使用される。図３は、ツールＴを装着した多関節ロボットのアームの先端部分を示す説明図で、Ｏを中心に回転可能な先端アーム２０には、ベース板２１が直交状に取り付けられ、このベース板２１を挟んで上下一対のツールＴ及びＴ１が夫々保持されている。このうち上側のツールＴ１は、横断面外形が円形となる従来のツールで、ベース板２１に設けられた回転駆動機構２２を介して回転可能に設けられるもので、下側のツールＴが図１に示した本発明のツールとなる。ここでは、ベース板２１に設けられた往復動機構２３のチャック２４にシャフト部４が保持されて、軸方向へ所定のストロークで往復動可能となっている。すなわち、先端アーム２０が回転することで、上下何れかのツールＴ，Ｔ１を選択して使用可能としたものである。   The tool T configured as described above is used by being mounted on, for example, an arm of an articulated robot. FIG. 3 is an explanatory view showing a tip portion of an arm of an articulated robot to which a tool T is attached. A base plate 21 is attached to the tip arm 20 that can rotate around O, and the base plate 21 is orthogonally attached. A pair of upper and lower tools T and T1 are held on both sides. Of these, the upper tool T1 is a conventional tool having a circular cross-sectional outer shape, and is provided rotatably via a rotation drive mechanism 22 provided on the base plate 21, and the lower tool T is shown in FIG. It becomes the tool of this invention shown in. Here, the shaft portion 4 is held by the chuck 24 of the reciprocating mechanism 23 provided on the base plate 21, and can reciprocate with a predetermined stroke in the axial direction. That is, when the tip arm 20 rotates, either the upper or lower tool T, T1 can be selected and used.

この多関節ロボットには、バリ取り加工を行うワークに対して予め使用するツールとその加工軌跡とがティーチングされており、先端アーム２０は、ワークの形状に合わせてツールＴ，Ｔ１を選択しながら各ツールを駆動させてワークのバリ取りを行うことになる。このとき、ツールＴを用いる場合は、図４に示すように、ワークＷに形成された交差面間の際部３０に対して第１の刃部１の稜線部５を当接させて往復動させれば、稜線部５のエッジ７により際部３０のバリ３１を確実に除去することができる。角穴のコーナー部等も同様である。   In this multi-joint robot, a tool to be used in advance for a workpiece to be deburred and a machining locus thereof are taught, and the tip arm 20 selects tools T and T1 according to the shape of the workpiece. Each tool is driven to deburr the workpiece. At this time, when the tool T is used, as shown in FIG. 4, the ridge line portion 5 of the first blade portion 1 is brought into contact with the edge portion 30 between the intersecting surfaces formed on the workpiece W to reciprocate. By doing so, the burr 31 of the edge portion 30 can be reliably removed by the edge 7 of the ridge line portion 5. The same applies to the corners of square holes.

このように、上記形態のツールＴによれば、第１の刃部１に、軸方向から見て角となる稜線部５を形成したことで、交差面間の際部のバリも確実に除去でき、作業効率の向上に寄与できる。
特にここでは、軸体の先端に、４つの稜線部５が形成される横断面外形が正方形の第１の刃部１を形成し、その後方に、第１の刃部１よりも大径で、横断面外形が円形となる第２の刃部２を形成した構成としているので、交差面間の際部のバリは第１の刃部１で、輪郭形状でのバリは第２の刃部２でバリ取りを行うといった使い分けが可能となり、より使い勝手が良好となる。 Thus, according to the tool T of the said form, the burr | flash of the edge part between crossing surfaces was also reliably removed by forming in the 1st blade part 1 the ridgeline part 5 which becomes a corner seeing from an axial direction. Can contribute to the improvement of work efficiency.
In particular, here, the first blade portion 1 having a square cross-sectional outer shape in which the four ridge line portions 5 are formed is formed at the tip of the shaft body, and the rear thereof has a larger diameter than the first blade portion 1. Since the second blade portion 2 having a circular cross-sectional outer shape is formed, the burr at the boundary between the intersecting surfaces is the first blade portion 1, and the burr in the contour shape is the second blade portion. It is possible to use properly such as deburring with 2, which improves usability.

なお、上記形態では、先端の第１の刃部の横断面外形を正方形として、角が直角となる４つの稜線部を形成するようにしているが、稜線部によって形成される角の角度は直角に限らず、鋭角や鈍角でもよいし、鋭角と鈍角とを並設した菱形のような形状でもよい。よって、横断面外形を三角形や長方形、五角形以上の多角形とする設計変更が可能である。
また、図５に示すように、正方形と円形とを組み合わせて２つの稜線部５，５を形成した第１の刃部１ａ（同図（Ａ））や、三角形と円形とを組み合わせて１つの稜線部５を形成した第１の刃部１ｂ（同図（Ｂ））といった複合形状とすれば、第１の刃部で輪郭形状のバリ取りも可能となる。
さらに、稜線部を有する刃部は先端部に限らず、中間部や後方部でもよいし、刃部全体に設けることもできる。
In the above embodiment, the cross-sectional outer shape of the first blade portion at the tip is a square, and four ridge lines are formed at right angles. However, the angle of the angle formed by the ridge lines is a right angle. The shape is not limited to an acute angle or an obtuse angle, and may be a rhombus shape in which an acute angle and an obtuse angle are arranged side by side. Therefore, it is possible to change the design so that the cross-sectional outer shape is a triangle, a rectangle, or a pentagon or more polygon.
In addition, as shown in FIG. 5, a first blade 1a (FIG. 5A) in which two ridges 5 and 5 are formed by combining a square and a circle, or a combination of a triangle and a circle, If a composite shape such as the first blade portion 1b (FIG. 5B) in which the ridge line portion 5 is formed is used, it is possible to deburr the contour shape with the first blade portion.
Furthermore, the blade portion having the ridge line portion is not limited to the tip portion, and may be an intermediate portion or a rear portion, or may be provided on the entire blade portion.

ツールの説明図である。It is explanatory drawing of a tool. 刃部を拡大して示す説明図で、（Ａ）が第１の刃部、（Ｂ）が第２の刃部、（Ｃ）が第３の刃部を夫々示す。It is explanatory drawing which expands and shows a blade part, (A) shows a 1st blade part, (B) shows a 2nd blade part, (C) shows a 3rd blade part, respectively. ツールを装着した先端アームの説明図である。It is explanatory drawing of the front-end | tip arm which mounted | wore the tool. ツールによるワークのバリ取り状態を示す説明図である。It is explanatory drawing which shows the deburring state of the workpiece | work by a tool. （Ａ）（Ｂ）は夫々変更例の刃部の横断面外形を示す説明図である。(A) (B) is explanatory drawing which shows the cross-sectional external shape of the blade part of a modified example, respectively.

符号の説明Explanation of symbols

Ｔ・・ツール、１・・第１の刃部、２・・第２の刃部、３・・第３の刃部、５・・稜線部、６，１０，１１・・溝、７，１２・・エッジ、２０・・先端アーム、２１・・ベース板、３０・・際部。   T ··· Tool, 1 ·· First blade portion, 2 ·· Second blade portion, 3 ·· Third blade portion, 5 ·· Ridge portion, 6, 10, 11 ·· Groove, 7, 12 .. Edge, 20 .. Tip arm, 21 .. Base plate, 30.

Claims (2)

複数の溝を軸方向へ所定間隔をおいて周設した刃部を有する軸体からなり、前記刃部の少なくとも一部に、軸方向から見て角となる稜線部を少なくとも一カ所形成したことを特徴とするバリ取り用ツール。   A shaft body having a blade portion in which a plurality of grooves are circumferentially arranged at predetermined intervals in the axial direction, and at least one ridge line portion that is an angle when viewed from the axial direction is formed in at least a part of the blade portion. Deburring tool characterized by 軸体の先端に、４つの稜線部が形成される横断面外形が正方形の第１の刃部を形成し、その後方に、前記第１の刃部よりも大径で、横断面外形が円形となる第２の刃部を形成した請求項１に記載のバリ取り用ツール。   A first blade portion having a square cross-sectional shape in which four ridge lines are formed at the tip of the shaft body is formed in a first blade portion having a larger diameter than that of the first blade portion and a circular cross-sectional shape is formed behind the first blade portion. The deburring tool according to claim 1, wherein a second blade portion is formed.

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