JP3119168U - Rotary cutting tool - Google Patents

Rotary cutting tool Download PDF

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Publication number
JP3119168U
JP3119168U JP2005010169U JP2005010169U JP3119168U JP 3119168 U JP3119168 U JP 3119168U JP 2005010169 U JP2005010169 U JP 2005010169U JP 2005010169 U JP2005010169 U JP 2005010169U JP 3119168 U JP3119168 U JP 3119168U
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Japan
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cover
rotary
spiral spring
rotary blade
main body
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Expired - Fee Related
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JP2005010169U
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Japanese (ja)
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達治郎 友定
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株式会社友定建機
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Abstract

【課題】サンダーやグラインダー等の円盤状の回転刃で、周辺が安全のためのカバーで覆われた研削器において、回転刃の面を効果的に使って研削するに当たり、カバーをスムーズに後退させることができる回転研削装置を提供する。
【解決手段】本体の回転駆動部1により回転駆動される回転刄2の外周を、回転刄2の軸4方向に沿って前後摺動可能なカバー3で覆うに当たり、回転刃2の軸4と同軸の渦巻きバネ5にてカバー3を外方に弾発したもので、カバー3を渦巻きバネ5により本体に連結することにより、ストローク、自由度を大きく確保し、上記課題を達成することができる。
【選択図】図1
[PROBLEMS] To smoothly retract a cover when grinding using the surface of a rotary blade effectively in a grinder having a disk-shaped rotary blade such as a sander or a grinder and the periphery is covered with a safety cover. Provided is a rotary grinding apparatus capable of
When the outer periphery of a rotary rod 2 rotated by a rotary drive unit 1 of the main body is covered with a cover 3 that can slide back and forth along the direction of the axis 4 of the rotary rod 2, the shaft 4 of the rotary blade 2 and The cover 3 is springed outward by a coaxial spiral spring 5, and by connecting the cover 3 to the main body by the spiral spring 5, a large stroke and flexibility can be secured and the above-described problems can be achieved. .
[Selection] Figure 1

Description

本考案は大きな変形ストロークが確保できて操作性に優れ、組み立て性も良い回転切削工具に関するものである。 The present invention relates to a rotary cutting tool that can secure a large deformation stroke, is excellent in operability, and is easy to assemble.

従来より、手持ち型のグラインダやサンダ等の回転切削工具は、円盤状の研磨材と、上記研磨材を被覆するためのカバーとを有しており、例えば労働安全衛生法第117条において、上記カバーを作業中に使用することが義務付けられている。このカバーにより使用時における安全性の向上を図っている。 Conventionally, rotary cutting tools such as hand-held grinders and sanders have a disc-shaped abrasive and a cover for covering the abrasive. For example, in Article 117 of the Industrial Safety and Health Act, the above-mentioned The cover must be used during work. This cover is intended to improve safety during use.

そしてこのカバーは研削作業時には邪魔になるので、一般にこの種のサンダー、グラインダー等の回転切削工具では作業性の点から、バネによりカバーが後退可能に構成されている。 Since this cover becomes an obstacle during grinding work, generally, in this type of rotary cutting tool such as a sander or a grinder, the cover is configured to be retractable by a spring from the viewpoint of workability.

従来から使用されているバネはコイルバネであったり、板バネであったりするが、板バネは耐久性の点で敬遠され、コイルバネが採用されている。 Conventionally used springs are coil springs or leaf springs, but the leaf springs are avoided in terms of durability, and coil springs are employed.

しかしながら、コイルバネでは、圧縮した際にコイルが重なるため、大きなストロークが確保できない上に、傾け角度も大きく取れず、作業性が悪いものであった。
特開2000-343400号公報 実開昭59−82646号公報 実開平6−36764号公報
However, in the coil spring, since the coils overlap when compressed, a large stroke cannot be secured, and the tilt angle cannot be increased, resulting in poor workability.
JP 2000-343400 A Japanese Utility Model Publication No.59-82646 Japanese Utility Model Publication No. 6-36764

本考案は、ストローク及び傾け角度を大きく確保できて作業性が向上した回転切削工具を提供するものである。 The present invention provides a rotary cutting tool that can ensure a large stroke and tilt angle and has improved workability.

本考案の主たる特徴は、本体の回転駆動部1により回転駆動される回転刄2の外周を、回転刄2の軸方向に沿って前後摺動可能なカバー3で覆うに当たり、回転刃2の軸4と同軸の渦巻きバネ5にてカバー3を外方に弾発したことである。 The main feature of the present invention is that the outer periphery of the rotary rod 2 that is rotationally driven by the rotary drive unit 1 of the main body is covered with a cover 3 that can slide back and forth along the axial direction of the rotary rod 2. This is because the cover 3 is bounced outward by a spiral spring 5 coaxial with 4.

本考案にあっては上述のように、回転刄2の外方を覆うカバー3を外方に弾発するにあたり、これを渦巻きバネ5にて行うようにしたから、渦巻きバネ5は押し込むとバネの線の太さ1本分にまで伸縮変形するものであって、変形ストロークが大きく取れる。したがって従来のコイルスプリングに比して、力が掛かっていない際の突出寸法が同じなら、それよりも大きな変動ストロークを確保できるも In the present invention, as described above, when the cover 3 that covers the outer side of the rotary rod 2 is ejected outward, this is performed by the spiral spring 5, so that when the spiral spring 5 is pushed in, the spring It expands and contracts to the thickness of one line, and a large deformation stroke can be taken. Therefore, compared to conventional coil springs, if the protruding dimensions are the same when no force is applied, a larger fluctuation stroke can be secured.

また、傾けに際しても、従来のコイルのように押し込まれて沈む部位で線材が重なることがないので、傾け作業の途中で抵抗が生ずることなく、手の捻りにスムーズに対応し、最後まで同じ感覚でスムーズに傾けて研削作業を行える利点がある。 Also, when tilting, the wires do not overlap at the part that is pushed down and sinks like a conventional coil, so there is no resistance during the tilting operation, and it responds smoothly to twisting of the hand, and the same feeling until the end There is an advantage that the grinding work can be performed by tilting smoothly.

以下本考案を添付図面に基づき詳細に説明する。 図1に示すように、本考案は、本体のモータのような回転駆動部1により周知の直結又は伝動により回転駆動される回転刄2の外周を、回転刄2の軸方向に沿って前後摺動可能なカバー3で覆ったものであり、このカバー3は回転刃2の軸4と同軸の渦巻きバネ5にて外方に弾発されている。 Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. As shown in FIG. 1, in the present invention, the outer periphery of a rotary rod 2 that is rotationally driven by a known direct connection or transmission by a rotary drive unit 1 such as a motor of the main body is slid back and forth along the axial direction of the rotary rod 2. The cover 3 is covered with a movable cover 3, and the cover 3 is ejected outward by a spiral spring 5 coaxial with the shaft 4 of the rotary blade 2.

回転刃2は、グラインダやサンダのようなディスク状のもの、円鋸等であり、その外周がカバー3で覆われるものであるが、一部は欠如され、その欠如部分6から回転刃2の一部が外部に突出し、研削に供される。勿論このカバー3は、使用時のみ欠如部分6が生ずるように図外開閉扉で覆っても良い。 The rotary blade 2 is a disk-shaped object such as a grinder or a sander, a circular saw, etc., and its outer periphery is covered with the cover 3, but a part of it is missing, and the lacking portion 6 leads to the rotation blade 2. A part protrudes outside and is used for grinding. Of course, this cover 3 may be covered with an open / close door that is not shown in the figure so that the missing portion 6 is formed only when it is used.

ここで、渦巻きバネ5は一端がカバー3と本体側の取付け板7との間に挟持される。また、カバー3には適所に立設されたガイドピン8が取付け板7の透口9にスライド自在に挿通保持される。10はガイドピン8取付けのためにカバー3に植設されたボルトで、ナット11が螺着される。12はストッパリング、13はグリップである。 Here, one end of the spiral spring 5 is sandwiched between the cover 3 and the attachment plate 7 on the main body side. Further, a guide pin 8 erected at an appropriate position is inserted into and held in the cover 3 slidably through the through hole 9 of the mounting plate 7. Reference numeral 10 denotes a bolt planted in the cover 3 for attaching the guide pin 8, and a nut 11 is screwed thereto. 12 is a stopper ring, 13 is a grip.

図示例ではカバー3と取付け板7をガイドピン8で連結したが、渦巻きバネ5で両者を連結した場合は、ガイドピン8による連結を省略することができる。また、必要に応じてカバー3の中心部からダクト14を介してダストを吸引除去できるようにしておくこともできる。 In the illustrated example, the cover 3 and the mounting plate 7 are connected by the guide pin 8, but when both are connected by the spiral spring 5, the connection by the guide pin 8 can be omitted. Further, it is possible to suck and remove dust from the center of the cover 3 through the duct 14 as necessary.

(使用方法)
本考案は、回転軸4の駆動により回転する回転刃2により、壁面や床面等の研磨仕上げや研削等を行うもので、通常はカバー3の切欠6より露出する回転刃2のエッジで面の研削、研磨等を行うが、大きな面積を処理するときは、グリップを持って回転は2の円形の面をの全面を加工面に接触させて処理を行うことができる。このときはグリップを押し付けると、カバー3が渦巻きバネ5に抗して後退し、回転刃2の全面が加工面に接触するものである。
(how to use)
The present invention performs polishing or grinding of a wall surface or floor surface by a rotary blade 2 that is rotated by driving a rotary shaft 4, and is usually a surface at the edge of the rotary blade 2 exposed from the notch 6 of the cover 3. However, when a large area is to be processed, the rotation can be performed by holding the grip and bringing the entire circular surface of 2 into contact with the processing surface. At this time, when the grip is pressed, the cover 3 moves backward against the spiral spring 5 and the entire surface of the rotary blade 2 comes into contact with the processing surface.

そしてこの全面を使う場合は、全体を直線状に移動させたり、ジグザクに移動させたり、或いは円や渦等、様々に移動させながら広い加工面を仕上げて行くのである。 When using the entire surface, the entire surface is moved in a straight line, zigzag, or moved in various ways, such as a circle or a vortex, to finish a wide machining surface.

例えば直線状の移動の場合は移動前方がやや加工面からやや浮き上がり、移動後方が加工面に密着し、円運動の場合は手を捻りながら移動前方がやや浮き上がり、後方が密着するものであるが、この場合はいわばボールのように中心部が低く周辺が高い曲面状に沿った軌跡を描くことになる。 For example, in the case of linear movement, the moving front is slightly lifted from the processing surface, the moving rear is in close contact with the processing surface, and in the case of circular motion, the moving front is slightly lifted while twisting the hand, and the rear is in close contact. In this case, a locus along a curved surface having a low center and a high periphery is drawn like a ball.

この場合、本考案の場合の渦巻きバネ5と、従来のコイル状のバネ15の変形を比較する。ここでバネ線材の太さをa、負荷が掛からないときのバネの深さをb、バネの段数を3段とする。変形深さは、従来の場合、最大ストロークは、b−3aとなるが、本考案の場合は、b−aとなり、他の条件が同じなら、図2のように本考案の場合は2aだけ従来よりストロークが大きく取れる。 In this case, the deformation of the spiral spring 5 in the present invention and the conventional coiled spring 15 are compared. Here, the thickness of the spring wire is a, the depth of the spring when no load is applied is b, and the number of spring stages is three. In the conventional case, the maximum stroke is b-3a, but in the case of the present invention, the deformation depth is b-a. If other conditions are the same, only 2a is used in the case of the present invention as shown in FIG. Larger stroke than before.

傾きを比較すると、渦巻きバネ5の最大傾斜αは、コイルバネ15の最大傾斜βに比べると、本考案の場合では線材の太さ1本分のaまで傾けるのに対し、コイルバネの場合は線材3本分のところまで(3a)しか降下しないから、当然α>βとなり、大きな傾き角度を確保できる。 When the inclination is compared, the maximum inclination α of the spiral spring 5 is inclined up to a for the thickness of one wire in the case of the present invention, compared to the maximum inclination β of the coil spring 15, whereas in the case of the coil spring, the wire 3 Since only (3a) is lowered to the actual amount, α> β is naturally satisfied, and a large inclination angle can be secured.

本考案にあっては、カバーを渦巻きバネにより保持しており、カバーの押し込みに大きなストロークが得られるので、回転刃の厚みが変わっても、十分に対応でき、また、研磨厚さが大きい場合でも、無理なく対応できる。 In the present invention, the cover is held by a spiral spring, and a large stroke can be obtained when the cover is pushed in. Even if the thickness of the rotary blade changes, it can be adequately handled and the polishing thickness is large. But it can be handled without difficulty.

また、捻り角度も大きく確保できるので、回転刃を傾けながら円を描くように移動させて研磨を進める場合も、大きな円弧で円を描くように研磨を行えるものであって、広面積の研磨処理も迅速に行える利点がある。
In addition, since a large twist angle can be secured, polishing can be performed by drawing a circle with a large arc even when moving by rotating the blade so as to draw a circle. Also has the advantage of being quick.

本考案の一実施例の概略側断面図。1 is a schematic sectional side view of an embodiment of the present invention. 同上の作用説明図。Action explanatory drawing same as the above. 同上の作用説明図。Action explanatory drawing same as the above.

符号の説明Explanation of symbols

1 回転駆動部
2 回転刃
3 カバー
4 軸
5 渦巻きバネ

DESCRIPTION OF SYMBOLS 1 Rotation drive part 2 Rotating blade 3 Cover 4 Shaft 5 Spiral spring

Claims (1)

本体の回転駆動部1により回転駆動される回転刄2の外周を、回転刄2の軸方向に沿って前後摺動可能なカバー3で覆うに当たり、回転刃2の軸4と同軸の渦巻きバネ5にてカバー3を外方に弾発して成ることを特徴とする回転切削工具。
A spiral spring 5 coaxial with the shaft 4 of the rotary blade 2 is used to cover the outer periphery of the rotary rod 2 rotated by the rotary drive unit 1 of the main body with a cover 3 that can slide back and forth along the axial direction of the rotary rod 2. A rotary cutting tool characterized in that the cover 3 is bulleted outward.
JP2005010169U 2005-11-30 2005-11-30 Rotary cutting tool Expired - Fee Related JP3119168U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005010169U JP3119168U (en) 2005-11-30 2005-11-30 Rotary cutting tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005010169U JP3119168U (en) 2005-11-30 2005-11-30 Rotary cutting tool

Publications (1)

Publication Number Publication Date
JP3119168U true JP3119168U (en) 2006-02-16

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JP2005010169U Expired - Fee Related JP3119168U (en) 2005-11-30 2005-11-30 Rotary cutting tool

Country Status (1)

Country Link
JP (1) JP3119168U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112809483A (en) * 2020-12-31 2021-05-18 涡阳县康仕达机电有限公司 Welding spot grinding device for axle machining

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112809483A (en) * 2020-12-31 2021-05-18 涡阳县康仕达机电有限公司 Welding spot grinding device for axle machining

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