WO2014136954A1 - Linear grinding material, brush-shaped grindstone and method for manufacturing linear grinding material - Google Patents
Linear grinding material, brush-shaped grindstone and method for manufacturing linear grinding material Download PDFInfo
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- WO2014136954A1 WO2014136954A1 PCT/JP2014/056028 JP2014056028W WO2014136954A1 WO 2014136954 A1 WO2014136954 A1 WO 2014136954A1 JP 2014056028 W JP2014056028 W JP 2014056028W WO 2014136954 A1 WO2014136954 A1 WO 2014136954A1
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- linear abrasive
- linear
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- sectional shape
- brush
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D13/00—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
- B24D13/02—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery
- B24D13/10—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery comprising assemblies of brushes
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- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46D—MANUFACTURE OF BRUSHES
- A46D1/00—Bristles; Selection of materials for bristles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D13/00—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
- B24D13/14—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by the front face
- B24D13/145—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by the front face having a brush-like working surface
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
- B24D18/0027—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for by impregnation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
- B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
- B24D3/20—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially organic
- B24D3/28—Resins or natural or synthetic macromolecular compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
- B24D3/34—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties
- B24D3/342—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties incorporated in the bonding agent
- B24D3/344—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties incorporated in the bonding agent the bonding agent being organic
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- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B2200/00—Brushes characterized by their functions, uses or applications
- A46B2200/30—Brushes for cleaning or polishing
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B2200/00—Brushes characterized by their functions, uses or applications
- A46B2200/30—Brushes for cleaning or polishing
- A46B2200/3093—Brush with abrasive properties, e.g. wire bristles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Brushes (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The brush-shaped grindstone (1) is provided with linear grinding material (11) in which aggregate fibers of long inorganic fibers have been hardened with a resin binder. For the linear grinding material (11), linear grinding material (11A) with a square cross-sectional shape, linear grinding material (11B) with a rectangular cross-sectional shape, or linear grinding material (11C) with an elliptical cross-sectional shape is used. The linear grinding material (11A) is difficult to bend in the diagonal direction of the cross-section. The linear grinding material (11B) and the linear grinding material (11C) are difficult to bend in the long direction of the cross-section. Consequently, the linear grinding materials (11A - 11C) have edge effects and have high grinding force.
Description
本発明は、無機長繊維が樹脂バインダーで固められた線状砥材、線状砥材がホルダに保持されたブラシ状砥石および線状砥材の製造方法に関する。
The present invention relates to a linear abrasive in which inorganic long fibers are hardened with a resin binder, a brush-like grindstone in which the linear abrasive is held in a holder, and a method for producing the linear abrasive.
複数本の線状砥材と、これらの線状砥材を束にして保持するホルダを備えるブラシ状砥石は特許文献１、２に記載されている。かかるブラシ状砥石によって、金属製ワークの表面にバリ取りや研磨等を行う場合、ブラシ状砥石を軸線周りに回転させながら、線状砥材の先端で研削や研磨を行う。特許文献１には、線状砥材の製造方法として、無機長繊維の集合糸に樹脂バインダーを含浸した後、絞りローラーで余剰な樹脂を除去しながら巻き取り、しかる後に、樹脂バインダーを加熱硬化させる方法が記載されている。
Patent Documents 1 and 2 describe a brush-like grindstone provided with a plurality of linear abrasives and a holder for holding these linear abrasives in a bundle. When performing deburring or polishing on the surface of a metal workpiece with such a brush-like grindstone, grinding or polishing is performed at the tip of the linear abrasive while rotating the brush-like grindstone around the axis. In Patent Document 1, as a method for producing a linear abrasive, after impregnating a resin binder into an inorganic long fiber aggregate yarn, it is wound up while removing excess resin with a squeeze roller, and then the resin binder is heated and cured. Is described.
特許文献１に記載の製造方法では、無機長繊維の集合糸をローラー等にかけて駆動する際に、集合糸がローラーに緩く押し付けられると、集合糸が円形状の断面形状になり、断面形状が円形状の線状砥材が製造される。
In the manufacturing method described in Patent Literature 1, when the aggregate yarn of inorganic long fibers is driven by being driven onto a roller or the like, when the aggregate yarn is loosely pressed against the roller, the aggregate yarn has a circular cross-sectional shape, and the cross-sectional shape is circular. A shaped linear abrasive is produced.
ここで、断面形状が円形状の線状砥材は、撓みやすさがどの方向でも一定なので、加工時の挙動が規則的となり、エッジ効果がない。従って、その研削力が抑制されることがある。
Here, since the linear abrasive with a circular cross-sectional shape has a constant flexibility in any direction, the behavior during processing becomes regular, and there is no edge effect. Therefore, the grinding force may be suppressed.
以上の問題点に鑑みて、本発明の課題は、エッジ効果を有し研削力が高い線状砥材およびブラシ状砥石を提供することにある。また、このような線状砥材の製造方法を提案することにある。
In view of the above problems, an object of the present invention is to provide a linear abrasive and a brush-like grindstone having an edge effect and high grinding power. Moreover, it is in proposing the manufacturing method of such a linear abrasive.
本発明は、線状砥材をブラシ状砥石に用いた場合の研磨能力や研削能力が線状砥材の断面形状の影響を受けるという発明者による新たな知見に基づく。
The present invention is based on the new knowledge by the inventors that the polishing ability and grinding ability when a linear abrasive is used for a brush-like grindstone are affected by the cross-sectional shape of the linear abrasive.
上記課題を解決するため、本発明は、無機長繊維の集合糸を樹脂バインダーによって固めた線状砥材において、断面形状が正方形、長方形または楕円形であることを特徴とする。
In order to solve the above-mentioned problems, the present invention is characterized in that a cross-sectional shape is a square, a rectangle or an ellipse in a linear abrasive material in which an aggregate yarn of inorganic long fibers is hardened with a resin binder.
本発明において、断面形状が正方形の線状砥材は、断面の縦横方向で寸法が等しいので、撓みにくく、腰が強い。また、断面形状が正方形の線状砥材は、断面の対角線方向が縦横方向よりも撓みにくいので、エッジ効果を有する。従って、断面形状が正方形の線状砥材は高い研削性を有する。また、本発明において、断面形状が長方形の線状砥材は、断面の厚み方向が幅方向（長手方向）に対して薄いので、先端が壊れやすく新しい切れ刃を出す自生作用が活発である。従って、研削能力を維持できる。また、断面形状が長方形の線状砥材では、断面の長手方向および対角線方向で撓みにくいので、エッジ効果を有する。さらに、断面形状が長方形の線状砥材は、断面の厚み方法と幅方向への撓みやすさが違うので、加工時の挙動が不規則となる。従って、断面形状が長方形の線状砥材では、挙動の不規則さとエッジ効果が合わさって研削能力が高くなる。さらに、本発明において、断面形状が楕円形の線状砥材は、断面の厚み方向が幅方向（長手方向）に対して薄いので、先端が壊れやすく新しい切れ刃を出す自生作用が活発である。従って、研削能力を維持できる。また、断面形状が楕円形の線状砥材では、断面の長手方向で撓みにくいので、エッジ効果を有する。さらに、断面形状が楕円形の線状砥材は、断面の厚み方法と幅方向への撓みやすさが違うので、加工時の挙動が不規則となる。従って、断面形状が楕円形の線状砥材では、挙動の不規則さとエッジ効果が合わさって研削能力が高くなる。なお、ワークを加工する際に、線状砥材の先端部は研削に近い作用を発揮する。従って、本明細書では、「研磨」と「研削」とを区別せずに用いる。
In the present invention, linear abrasives having a square cross-sectional shape have the same dimensions in the vertical and horizontal directions of the cross-section, and are therefore difficult to bend and strong. Further, the linear abrasive having a square cross-sectional shape has an edge effect because the diagonal direction of the cross-section is less likely to bend than the vertical and horizontal directions. Therefore, a linear abrasive having a square cross-sectional shape has high grindability. Further, in the present invention, the linear abrasive having a rectangular cross-sectional shape has a thin cross-sectional thickness direction with respect to the width direction (longitudinal direction). Therefore, the grinding ability can be maintained. Further, a linear abrasive having a rectangular cross-sectional shape has an edge effect because it is difficult to bend in the longitudinal direction and the diagonal direction of the cross-section. Furthermore, a linear abrasive having a rectangular cross-sectional shape is irregular in behavior during processing because the cross-sectional thickness method and the ease of bending in the width direction are different. Therefore, in the linear abrasive having a rectangular cross-sectional shape, the irregularity of the behavior and the edge effect are combined to increase the grinding ability. Further, in the present invention, the linear abrasive having an elliptical cross-sectional shape has a thin cross-sectional thickness direction with respect to the width direction (longitudinal direction), and therefore the tip is easily broken and a self-generating action of generating a new cutting edge is active. . Therefore, the grinding ability can be maintained. Further, a linear abrasive having an elliptical cross-sectional shape has an edge effect because it is difficult to bend in the longitudinal direction of the cross-section. Furthermore, a linear abrasive with an elliptical cross-sectional shape has a different behavior during processing because the cross-sectional thickness method and the ease of bending in the width direction are different. Therefore, in a linear abrasive having an elliptical cross-sectional shape, the irregularity of behavior and the edge effect are combined to increase the grinding ability. In addition, when processing a workpiece | work, the front-end | tip part of a linear abrasive exhibits the effect | action close | similar to grinding. Therefore, in this specification, “polishing” and “grinding” are used without distinction.
本発明において、長方形または楕円形の断面形状を備え、偏平率が１．１以上、５．０以下であるものとすることができる。偏平率がこのような範囲であれば、線状砥材が断面の長手方向で撓みにくくなり、エッジ効果を発揮することが認められる。偏平率とは、長手方向の寸法を短手方向の寸法で除算した値である。ここで、断面形状の扁平率を大きくすることで研削能力を上げ、扁平率を小さくすることで研削能力を下げるといった調整が可能である。なお、加工後のワークの面粗度は扁平率を大きくして加工効率を上げると粗くなり、扁平率を下げて加工効率を下げると細かくなる傾向がある。
In the present invention, it may have a rectangular or elliptical cross-sectional shape and a flatness ratio of 1.1 or more and 5.0 or less. If the flatness is in such a range, it is recognized that the linear abrasive is less likely to bend in the longitudinal direction of the cross section and exhibits an edge effect. The flatness ratio is a value obtained by dividing the longitudinal dimension by the lateral dimension. Here, it is possible to make adjustments such as increasing the grinding ability by increasing the flatness of the cross-sectional shape and reducing the grinding ability by reducing the flatness. The surface roughness of the workpiece after machining tends to become rough when the flattening ratio is increased to increase the machining efficiency, and when the flattening ratio is lowered to lower the machining efficiency, the surface roughness tends to become finer.
本発明において、前記集合糸には縒りがかけられていても良い。集合糸に適正な縒りがかかっていると、線状砥材の縦割れ（線状砥材の長さ方向の割れ）が防止でき、衝撃による摩耗を防止できる。
In the present invention, the aggregate yarn may be twisted. When the gathered yarn is properly twisted, the vertical cracking of the linear abrasive material (cracking in the length direction of the linear abrasive material) can be prevented, and wear due to impact can be prevented.
この場合、正方形の断面形状を備え、前記縒りの１周期当たりの前記線状砥材の長さ寸法は、１ｃｍ以上、４ｃｍ以下とすることができる。縒りの１周期当たりの線状砥材の長さ寸法を４ｃｍ以下とすれば、線状砥材の縦割れを防止する効果を得ることができる。また、縒りの１周期当たりの線状砥材の長さ寸法を１ｃｍ以上とすれば、縒りに起因する無機長繊維のケバ立ちを防止できる。
In this case, a square cross-sectional shape is provided, and the length dimension of the linear abrasive per cycle of the winding can be 1 cm or more and 4 cm or less. If the length dimension of the linear abrasive per turn is 4 cm or less, the effect of preventing vertical cracking of the linear abrasive can be obtained. Moreover, if the length dimension of the linear abrasive per twisting cycle is set to 1 cm or more, it is possible to prevent the inorganic long fibers from coming off due to the twisting.
この場合に、長方形または楕円形の断面形状を備え、前記縒りの１周期当たりの前記線状砥材の長さ寸法は、偏平率の範囲が１．１以上、１．９以下の場合、１ｃｍ以上、４ｃｍ以下であり、偏平率の範囲が２．０以上、５．０以下の場合、１０ｃｍ以上、２０ｃｍ以下であるものとすることができる。偏平率の範囲が１．１以上、１．９以下の場合には、縒りの１周期当たりの線状砥材の長さ寸法を４ｃｍ以下とすれば、線状砥材の縦割れを防止する効果を得ることができる。また、縒りの１周期当たりの線状砥材の長さ寸法を１ｃｍ以上とすれば、縒りに起因する無機長繊維のケバ立ちを防止できる。また、偏平率の範囲が２．０以上、５．０以下の場合には、縒りの１周期当たりの線状砥材の長さ寸法を２０ｃｍ以下とすれば、偏平率が２．０以上と大きい線状砥材であっても、その縦割れを防止する効果を得ることができる。また、縒りの１周期当たりの線状砥材の長さ寸法を１０ｃｍ以上とすれば、偏平率が２．０以上と大きい線状砥材であっても、縒りに起因する無機長繊維のケバ立ちを防止できる。
In this case, it has a rectangular or elliptical cross-sectional shape, and the length dimension of the linear abrasive per cycle of the twist is 1 cm when the flatness range is 1.1 or more and 1.9 or less. As mentioned above, when it is 4 cm or less and the range of the flatness ratio is 2.0 or more and 5.0 or less, it can be 10 cm or more and 20 cm or less. When the range of the flatness ratio is 1.1 or more and 1.9 or less, if the length dimension of the linear abrasive per turn is 4 cm or less, vertical cracking of the linear abrasive is prevented. An effect can be obtained. Moreover, if the length dimension of the linear abrasive per twisting cycle is set to 1 cm or more, it is possible to prevent the inorganic long fibers from coming off due to the twisting. In the case where the range of the flatness is 2.0 or more and 5.0 or less, if the length dimension of the linear abrasive per turn is 20 cm or less, the flatness is 2.0 or more. Even if it is a large linear abrasive, the effect which prevents the vertical crack can be acquired. Further, if the length dimension of the linear abrasive per one cycle of twist is 10 cm or more, even if the linear abrasive has a large flatness of 2.0 or more, the inorganic long fiber scrap caused by the twist You can prevent standing.
次に、本発明のブラシ状砥石は、複数本の線状砥材と、前記複数本の線状砥材を束として保持するホルダと、を有し、各線状砥材は、無機長繊維の集合糸が樹脂バインダーによって固められたものであり、各線状砥材の断面形状は、正方形、長方形または楕円形であることを特徴とする。
Next, the brush-like grindstone of the present invention has a plurality of linear abrasives and a holder for holding the plurality of linear abrasives as a bundle, and each linear abrasive is made of inorganic long fibers. The aggregate yarn is solidified by a resin binder, and the cross-sectional shape of each linear abrasive is a square, a rectangle or an ellipse.
本発明によれば、複数本の線状砥材のそれぞれが、エッジ効果を有し研削力が高いので、ブラシ状砥石によるワークの加工が容易となる。
According to the present invention, since each of the plurality of linear abrasives has an edge effect and a high grinding force, the workpiece can be easily processed with the brush-like grindstone.
次に、本発明は、無機長繊維の集合糸が樹脂バインダーによって固められた線状砥材の製造方法において、前記集合糸に未硬化の樹脂バインダーを含浸する含浸工程と、前記樹脂バインダーを含浸した前記集合糸をダイスに通して当該集合糸の断面形状を正方形、長方形または楕円形に整形する整形工程と、前記整形工程の後、または前記整形工程と同時に前記樹脂バインダーを硬化させる樹脂硬化工程と、を行うことを特徴とする。
Next, the present invention relates to a method for producing a linear abrasive material in which an aggregate yarn of inorganic long fibers is hardened by a resin binder, an impregnation step of impregnating the aggregate yarn with an uncured resin binder, and impregnating the resin binder A shaping step for shaping the gathered yarn through a die to shape the cross-sectional shape of the gathered yarn into a square, rectangle or ellipse, and a resin curing step for curing the resin binder after the shaping step or simultaneously with the shaping step And performing.
本発明によれば、線状砥材を製造する際、含浸工程において集合糸に未硬化の樹脂バインダーを含浸した後、樹脂硬化工程において樹脂バインダーを硬化させる前、あるいは樹脂硬化工程と同時に樹脂バインダーを含浸した集合糸をダイスに通して集合糸の断面形状を整形する整形工程を行う。従って、線状砥材の断面形状を容易に制御することができる。
According to the present invention, when manufacturing a linear abrasive, after impregnating an uncured resin binder into an aggregate yarn in an impregnation step, before curing the resin binder in a resin curing step, or simultaneously with a resin curing step, a resin binder A shaping step of shaping the cross-sectional shape of the aggregate yarn by passing the aggregate yarn impregnated with dies through a die. Therefore, the cross-sectional shape of the linear abrasive can be easily controlled.
本発明において、前記含浸工程の前に前記集合糸に縒りをかける縒り工程を行うことが出来る。このようにすれば、集合糸に縒りをかけた分、集合糸において無機長繊維が纏まった状態になるので、無機長繊維が互いに平行に延在している集合糸を用いる場合に比して、線状砥材の断面形状を制御しやすい。また、適正な縒りをかけると、線状砥材の縦割れ（線状砥材の長さ方向の割れ）を防止し、衝撃による摩耗を防止することができる。
In the present invention, a twisting step of twisting the aggregate yarn can be performed before the impregnation step. In this way, since the inorganic long fibers are gathered in the aggregate yarn by the amount of twisting of the aggregate yarn, compared to the case of using the aggregate yarn in which the inorganic long fibers extend in parallel to each other. It is easy to control the cross-sectional shape of the linear abrasive. Moreover, when an appropriate curling is applied, vertical cracking of the linear abrasive material (cracking in the length direction of the linear abrasive material) can be prevented, and wear due to impact can be prevented.
また、本発明の別の形態は、無機長繊維の集合糸が樹脂バインダーによって固められた線状砥材の製造方法において、前記集合糸に未硬化の樹脂バインダーを含浸する含浸工程と、前記樹脂バインダーを硬化させる樹脂硬化工程と、前記集合糸の外周面を研磨して、その断面形状を正方形、長方形または楕円形に整形する研磨整形工程と、を行うことを特徴とする。
Another aspect of the present invention is an impregnation step in which the aggregate yarn is impregnated with an uncured resin binder in the method for producing a linear abrasive in which an aggregate yarn of inorganic long fibers is hardened with a resin binder, and the resin A resin curing step for curing the binder and a polishing shaping step for polishing the outer peripheral surface of the aggregate yarn to shape the cross-sectional shape into a square, a rectangle, or an ellipse are performed.
本発明によれば、集合糸の外周面の研磨により、線状砥材の断面形状を容易に制御できる。
According to the present invention, the cross-sectional shape of the linear abrasive can be easily controlled by polishing the outer peripheral surface of the aggregate yarn.
以下、図面を参照して、本発明の実施の形態に係るブラシ状砥石および研磨機用ブラシについて説明する。
Hereinafter, a brush-like grindstone and a brush for a polishing machine according to an embodiment of the present invention will be described with reference to the drawings.
［ブラシ状砥石の第１実施例］
（研磨機用ブラシの全体構成）
図１は、本発明の第１実施例に係るブラシ状砥石の説明図である。図１に示す研磨機用ブラシ１０は、金属製ワークの表面にバリ取りや研磨等を行うためのツールであり、ブラシ状砥石１と、このブラシ状砥石１を保持するブラシケース２と、ブラシ状砥石１をブラシケース２に固定するための固定ねじ３とを備えている。 [First Example of Brush-shaped Grinding Wheel]
(Overall configuration of polishing machine brush)
FIG. 1 is an explanatory diagram of a brush-like grindstone according to a first embodiment of the present invention. Abrush 10 for a polishing machine shown in FIG. 1 is a tool for deburring or polishing a surface of a metal workpiece, and includes a brush-like grindstone 1, a brush case 2 that holds the brush-like grindstone 1, and a brush. And a fixing screw 3 for fixing the shaped whetstone 1 to the brush case 2.
（研磨機用ブラシの全体構成）
図１は、本発明の第１実施例に係るブラシ状砥石の説明図である。図１に示す研磨機用ブラシ１０は、金属製ワークの表面にバリ取りや研磨等を行うためのツールであり、ブラシ状砥石１と、このブラシ状砥石１を保持するブラシケース２と、ブラシ状砥石１をブラシケース２に固定するための固定ねじ３とを備えている。 [First Example of Brush-shaped Grinding Wheel]
(Overall configuration of polishing machine brush)
FIG. 1 is an explanatory diagram of a brush-like grindstone according to a first embodiment of the present invention. A
ブラシ状砥石１は、複数本の線状砥材１１と、これらの線状砥材１１の基端側を保持するホルダ１２とを備えている。本形態において、複数本の線状砥材１１は、複数本の線状砥材１１からなる複数の束１１０としてホルダ１２に保持されており、束１１０は、研磨機用ブラシ１０の回転中心軸線Ｌの周りに等角度間隔で配置されている。
The brush-like grindstone 1 includes a plurality of linear abrasives 11 and a holder 12 that holds the proximal end side of these linear abrasives 11. In this embodiment, the plurality of linear abrasives 11 are held by the holder 12 as a plurality of bundles 110 made of a plurality of linear abrasives 11, and the bundle 110 is the rotation center axis of the polishing machine brush 10. Around L, they are arranged at equiangular intervals.
線状砥材１１は、アルミナ繊維フィラメント等の無機長繊維の集合体に熱硬化性樹脂のエポキシ樹脂やフェノール樹脂、シリコーン樹脂、熱可塑性樹脂のポリエステル樹脂、ポリプロピレン樹脂、ポリアミド樹脂などのバインダー樹脂を含浸、硬化させて線状に形成したものである。集合糸は、例えば、繊維径が８～５０μｍのアルミナ長繊維（無機長繊維）を２５０～３０００本、集合させたものであり、集合糸の径は、０．１ｍｍ～２ｍｍである。このため、線状砥材１１の径は、集合糸の径と同様、０．１ｍｍ～２ｍｍである。なお、無機長繊維は、被研磨材に対して相対的に研磨性を有する材料、すなわち、研磨する材料よりも硬くてかつ脆い材料であれば特に限定されるものではなく、例えば、アルミナ繊維の他、炭化ケイ素繊維、ボロン繊維、あるいはガラス繊維を用いることができる。なお、研磨する材料によってはこれらが混合していてもよく、アルミナ繊維、炭化ケイ素繊維は、鉄系、非鉄系金属に対する研磨性が非常によい。
The linear abrasive 11 is made of a thermosetting resin epoxy resin, a phenol resin, a silicone resin, a thermoplastic polyester resin, a polypropylene resin, a polyamide resin or the like on an aggregate of inorganic long fibers such as alumina fiber filaments. It is impregnated and cured to form a linear shape. The aggregate yarn is, for example, an aggregate of 250 to 3000 alumina long fibers (inorganic long fibers) having a fiber diameter of 8 to 50 μm, and the aggregate yarn has a diameter of 0.1 mm to 2 mm. For this reason, the diameter of the linear abrasive 11 is 0.1 mm to 2 mm, similar to the diameter of the aggregate yarn. The inorganic long fiber is not particularly limited as long as it is a material that is relatively abrasive with respect to the material to be polished, that is, a material that is harder and more brittle than the material to be polished. In addition, silicon carbide fiber, boron fiber, or glass fiber can be used. Depending on the material to be polished, these may be mixed, and the alumina fiber and silicon carbide fiber have very good polishing properties for ferrous and non-ferrous metals.
ホルダ１２は金属製または樹脂製であり、その外形は円柱状である。なお、その外径を四角柱形状とすることもできる。ホルダ１２の一端側には、軸線方向に開口する円筒状の砥材保持部１２ａが形成されており、この砥材保持部１２ａの内部に線状砥材１１の束１１０の基端部を挿入して接着固定することにより、線状砥材１１とホルダ１２が一体に結合されている。
The holder 12 is made of metal or resin, and its outer shape is cylindrical. The outer diameter may be a quadrangular prism shape. A cylindrical abrasive material holding portion 12a that opens in the axial direction is formed on one end side of the holder 12, and a proximal end portion of the bundle 110 of the linear abrasive material 11 is inserted into the abrasive material holding portion 12a. Then, the linear abrasive 11 and the holder 12 are integrally coupled by bonding and fixing.
ブラシケース２は、有底円筒状の周壁部２１と、周壁部２１の一端側から、周壁部２１の中心軸線（回転中心軸線Ｌ）方向に延出された駆動用連結軸２２とを備えており、周壁部２１の内径寸法は、ホルダ１２の外径寸法よりやや大きい。本形態において、ブラシケース２は金属製または樹脂製である。駆動用連結軸２２は、研磨機用ブラシ１０を研磨装置に取り付けるためのものであり、この駆動用連結軸２２を介して研磨機用ブラシ１０に回転駆動力が伝達され、研磨動作が行われる。研磨機用ブラシ１０は、通常は回転中心軸線Ｌ周りに回転駆動されるが、回転に限らず、往復動作、オシレーション動作、揺動、あるいはこれらの動作を組み合わせた動きが行われることもある。
The brush case 2 includes a cylindrical peripheral wall portion 21 with a bottom, and a drive connecting shaft 22 that extends from one end side of the peripheral wall portion 21 in the direction of the central axis (rotation center axis L) of the peripheral wall portion 21. In addition, the inner diameter dimension of the peripheral wall portion 21 is slightly larger than the outer diameter dimension of the holder 12. In this embodiment, the brush case 2 is made of metal or resin. The drive connecting shaft 22 is for attaching the polishing machine brush 10 to the polishing apparatus, and a rotational driving force is transmitted to the polishing machine brush 10 via the drive connecting shaft 22 to perform a polishing operation. . The polishing machine brush 10 is normally driven to rotate about the rotation center axis L, but is not limited to rotation, and may be reciprocated, oscillated, oscillated, or a combination of these operations. .
（ブラシケースに対するブラシ状砥石の固定構造）
本形態では、ブラシケース２にブラシ状砥石１を固定ねじ３により固定するにあたって、まず、ブラシケース２の周壁部２１には、軸方向に沿って延びる長穴状の開口部２１ａが１箇所形成されている。また、周壁部２１の内周面において、回転中心軸線Ｌを挟んで開口部２１ａと対向する領域には、軸方向に沿って延びる平坦面（図示せず）が形成されている。また、周壁部２１には、他の部位よりも肉厚が薄い薄肉部２１ｃが形成されている。かかる薄肉部２１ｃは、周壁部２１の外周面の一部を軸線方向に沿って所定長さ分だけ細長く平坦に削った形状になっている。本形態において、回転中心軸線Ｌを挟んで開口部２１ａと対向する位置の両側に２つの薄肉部２１ｃが形成されている。このため、ブラシケース２は、周壁部２１に開口部２１ａが形成されているが、２つの薄肉部２１ｃの形成、および平坦面の形成によって、重心位置が回転中心軸線Ｌ上にある。 (Brush-shaped grinding wheel fixing structure to brush case)
In this embodiment, when the brush-like grindstone 1 is fixed to the brush case 2 with the fixing screw 3, first, the peripheral wall portion 21 of the brush case 2 is formed with one elongated hole-like opening portion 21 a extending along the axial direction. Has been. Further, a flat surface (not shown) extending along the axial direction is formed on the inner peripheral surface of the peripheral wall portion 21 in a region facing the opening 21a across the rotation center axis L. Moreover, the thin wall part 21c whose thickness is thinner than the other site | part is formed in the surrounding wall part 21. As shown in FIG. The thin-walled portion 21c has a shape in which a part of the outer peripheral surface of the peripheral wall portion 21 is long and flatly cut by a predetermined length along the axial direction. In this embodiment, two thin portions 21c are formed on both sides of the position facing the opening 21a across the rotation center axis L. For this reason, the brush case 2 has the opening 21a formed in the peripheral wall portion 21, but the center of gravity position is on the rotation center axis L by the formation of the two thin portions 21c and the formation of the flat surface.
本形態では、ブラシケース２にブラシ状砥石１を固定ねじ３により固定するにあたって、まず、ブラシケース２の周壁部２１には、軸方向に沿って延びる長穴状の開口部２１ａが１箇所形成されている。また、周壁部２１の内周面において、回転中心軸線Ｌを挟んで開口部２１ａと対向する領域には、軸方向に沿って延びる平坦面（図示せず）が形成されている。また、周壁部２１には、他の部位よりも肉厚が薄い薄肉部２１ｃが形成されている。かかる薄肉部２１ｃは、周壁部２１の外周面の一部を軸線方向に沿って所定長さ分だけ細長く平坦に削った形状になっている。本形態において、回転中心軸線Ｌを挟んで開口部２１ａと対向する位置の両側に２つの薄肉部２１ｃが形成されている。このため、ブラシケース２は、周壁部２１に開口部２１ａが形成されているが、２つの薄肉部２１ｃの形成、および平坦面の形成によって、重心位置が回転中心軸線Ｌ上にある。 (Brush-shaped grinding wheel fixing structure to brush case)
In this embodiment, when the brush-
ホルダ１２の上端側部分には、回転中心軸線Ｌを通り、かつ、回転中心軸線Ｌに対して直交する方向にねじ穴１２ｂが貫通形成されている。ねじ穴１２ｂは、ブラシ状砥石１をブラシケース２に組み付ける際、固定ねじ３を螺着するためのものである。本形態では、固定ねじ３として、六角穴付き止めねじが用いられており、固定ねじ３の端部には、六角レンチ５の先端を嵌合するための六角穴３１が形成されている。
A screw hole 12b is formed through the upper end side portion of the holder 12 in a direction passing through the rotation center axis L and perpendicular to the rotation center axis L. The screw hole 12 b is for screwing the fixing screw 3 when the brush-like grindstone 1 is assembled to the brush case 2. In this embodiment, a hexagon socket set screw is used as the fixing screw 3, and a hexagon hole 31 for fitting the tip of the hexagon wrench 5 is formed at the end of the fixing screw 3.
このように構成したブラシ状砥石１および研磨機用ブラシ１０は、線状砥材１１の先端部をワークの表面に押し当てた状態で、回転中心軸線Ｌ周りに回転させ、成形時や加工時に発生したバリ取りやワークの表面の研磨を行う。ワークは、例えば、マグネシウムやアルミニウムのダイキャスト品である。また、ワークは、エンドミル、ドリル、ダイス、タップなどのツールを用いて加工された鋼製の部材であってもよい。
The brush-like grindstone 1 and the polishing machine brush 10 thus configured are rotated around the rotation center axis L in a state where the tip of the linear abrasive 11 is pressed against the surface of the workpiece, and at the time of molding or processing Deburring the generated surface and polishing the work surface. The workpiece is, for example, a die cast product of magnesium or aluminum. The workpiece may be a steel member processed using a tool such as an end mill, a drill, a die, or a tap.
（研磨機用ブラシの組立方法、線状砥材の突出寸法調整方法）
本発明を適用した研磨機用ブラシ１０を組み立てるにあたって、ブラシ状砥石１をブラシケース２に組み付けて固定ねじ３で固定する際には、まず、ブラシケース２内にブラシ状砥石１をホルダ１２側から挿入する。そして、ブラシ状砥石１をブラシケース２内で軸方向にスライドさせることにより、線状砥材１１の自由端側が周壁部２１の一端側の開口から必要な長さだけ突き出すように組み付け位置の調整を行う。その際、ブラシケース２に形成された開口部２１ａからホルダ１２のねじ穴１２ｂの開口が見えるように周方向の位置を調整しながら挿入する。これにより、ホルダ１２に設けられたねじ穴１２ｂへの開口部２１ａからのアクセスが可能となる。 (Assembly method of brush for polishing machine, adjustment method of protrusion size of linear abrasive)
In assembling thebrush 10 for a polishing machine to which the present invention is applied, when the brush-like grindstone 1 is assembled to the brush case 2 and fixed with the fixing screw 3, first, the brush-like grindstone 1 is first placed in the brush case 2 on the holder 12 side. Insert from. Then, by sliding the brush-like grindstone 1 in the axial direction in the brush case 2, the assembly position is adjusted so that the free end side of the linear abrasive material 11 protrudes from the opening on one end side of the peripheral wall portion 21 by a required length. I do. In that case, it inserts, adjusting the position of the circumferential direction so that opening of the screw hole 12b of the holder 12 can be seen from the opening part 21a formed in the brush case 2. FIG. Thereby, access from the opening part 21a to the screw hole 12b provided in the holder 12 becomes possible.
本発明を適用した研磨機用ブラシ１０を組み立てるにあたって、ブラシ状砥石１をブラシケース２に組み付けて固定ねじ３で固定する際には、まず、ブラシケース２内にブラシ状砥石１をホルダ１２側から挿入する。そして、ブラシ状砥石１をブラシケース２内で軸方向にスライドさせることにより、線状砥材１１の自由端側が周壁部２１の一端側の開口から必要な長さだけ突き出すように組み付け位置の調整を行う。その際、ブラシケース２に形成された開口部２１ａからホルダ１２のねじ穴１２ｂの開口が見えるように周方向の位置を調整しながら挿入する。これにより、ホルダ１２に設けられたねじ穴１２ｂへの開口部２１ａからのアクセスが可能となる。 (Assembly method of brush for polishing machine, adjustment method of protrusion size of linear abrasive)
In assembling the
次に、開口部２１ａから固定ねじ３をねじ穴１２ｂに螺入し、開口部２１ａ側からねじ穴１２ｂの奥側に向かって締め込む。固定ねじ３は、六角穴付き止めねじであるため、ねじ穴１２ｂの内部に完全に収容されるまで締め込まれる。その結果、固定ねじ３の先端部３０は、ねじ穴１２ｂからわずかに突出し、ブラシケース２の内周面に形成された平坦面に突き当たる。従って、ブラシケース２の周壁部２１内において、固定ねじ３およびホルダ１２は径方向に突っ張った状態となり、ホルダ１２は、周壁部２１の開口部２１ａ側の内周面に押し付け固定される。この状態で、固定ねじ３の基端部は、ねじ穴１２ｂ内に入り込んでいるので、固定ねじ３が周壁部２１の外周面から一切、突出していない。
Next, the fixing screw 3 is screwed into the screw hole 12b from the opening 21a, and tightened from the opening 21a side toward the inner side of the screw hole 12b. Since the fixing screw 3 is a hexagon socket set screw, it is tightened until it is completely accommodated in the screw hole 12b. As a result, the tip 30 of the fixing screw 3 slightly protrudes from the screw hole 12 b and abuts against a flat surface formed on the inner peripheral surface of the brush case 2. Accordingly, the fixing screw 3 and the holder 12 are stretched in the radial direction in the peripheral wall portion 21 of the brush case 2, and the holder 12 is pressed and fixed to the inner peripheral surface of the peripheral wall portion 21 on the opening 21 a side. In this state, since the base end portion of the fixing screw 3 has entered the screw hole 12 b, the fixing screw 3 does not protrude from the outer peripheral surface of the peripheral wall portion 21 at all.
このようにして、ブラシ状砥石１のブラシケース２への固定が完了した研磨機用ブラシ１０を研磨に使用していくと、線状砥材１１の先端部が磨耗し、線状砥材１１の突出寸法が短くなる。このような場合には、固定ねじ３を緩めてからホルダ１２を軸線方向に移動させ、線状砥材１１の突出寸法を最適な寸法、例えば、数ｍｍから数十ｃｍ程度に調整した後、固定ねじ３を再び締め込んでホルダ１２をブラシケース２内に固定する。
In this way, when the polishing machine brush 10 having been fixed to the brush case 2 of the brush-like grindstone 1 is used for polishing, the tip of the linear abrasive material 11 is worn, and the linear abrasive material 11 is worn. The projecting dimension of becomes shorter. In such a case, after the fixing screw 3 is loosened, the holder 12 is moved in the axial direction, and the protruding dimension of the linear abrasive 11 is adjusted to an optimum dimension, for example, from several mm to several tens of cm, The fixing screw 3 is tightened again to fix the holder 12 in the brush case 2.
［ブラシ状砥石の第２実施例］
図２は、本発明の第２実施例に係るブラシ状砥石の説明図である。なお、本例の研磨機用ブラシの基本的な構成は、図１に示す形態と同様であるため、共通する部分には同一の符号を付してそれらの説明を省略する。 [Second embodiment of brush-like grindstone]
FIG. 2 is an explanatory view of a brush-like grindstone according to the second embodiment of the present invention. In addition, since the basic structure of the brush for polishers of this example is the same as that of the form shown in FIG. 1, the same code | symbol is attached | subjected to a common part and those description is abbreviate | omitted.
図２は、本発明の第２実施例に係るブラシ状砥石の説明図である。なお、本例の研磨機用ブラシの基本的な構成は、図１に示す形態と同様であるため、共通する部分には同一の符号を付してそれらの説明を省略する。 [Second embodiment of brush-like grindstone]
FIG. 2 is an explanatory view of a brush-like grindstone according to the second embodiment of the present invention. In addition, since the basic structure of the brush for polishers of this example is the same as that of the form shown in FIG. 1, the same code | symbol is attached | subjected to a common part and those description is abbreviate | omitted.
第１実施例に係るブラシ状砥石１においては、複数本の線状砥材１１が複数の束１１０としてホルダ１２に保持されていたが、図２に示すように、本形態では、複数本の線状砥材１１が１つの束１１０としてホルダ１２に保持されている。このように構成したブラシ状砥石１および研磨機用ブラシ１０でも、図１を参照して説明した形態と同様、線状砥材１１の先端部をワークの表面に押し当てた状態で、回転中心軸線Ｌ周りに回転させ、成形時や加工時に発生したバリ取りや、ワーク表面の研磨に用いられる。
In the brush-like grindstone 1 according to the first example, a plurality of linear abrasives 11 are held in the holder 12 as a plurality of bundles 110, but as shown in FIG. The linear abrasive 11 is held by the holder 12 as one bundle 110. Also in the brush-shaped grindstone 1 and the polishing machine brush 10 configured as described above, in the same manner as the embodiment described with reference to FIG. 1, the center of rotation is performed with the tip of the linear abrasive 11 pressed against the surface of the workpiece. It is rotated around the axis L, and is used for deburring that occurs during molding and processing, and for polishing the workpiece surface.
［ブラシ状砥石の第３実施例］
図３は、本発明の第３実施例に係るブラシ状砥石の説明図である。なお、本例の研磨機用ブラシの基本的な構成は、図１に示す形態と同様であるため、共通する部分には同一の符号を付してそれらの説明を省略する。 [Third embodiment of brush-like grindstone]
FIG. 3 is an explanatory diagram of a brush-like grindstone according to a third embodiment of the present invention. In addition, since the basic structure of the brush for polishers of this example is the same as that of the form shown in FIG. 1, the same code | symbol is attached | subjected to a common part and those description is abbreviate | omitted.
図３は、本発明の第３実施例に係るブラシ状砥石の説明図である。なお、本例の研磨機用ブラシの基本的な構成は、図１に示す形態と同様であるため、共通する部分には同一の符号を付してそれらの説明を省略する。 [Third embodiment of brush-like grindstone]
FIG. 3 is an explanatory diagram of a brush-like grindstone according to a third embodiment of the present invention. In addition, since the basic structure of the brush for polishers of this example is the same as that of the form shown in FIG. 1, the same code | symbol is attached | subjected to a common part and those description is abbreviate | omitted.
図３に示すブラシ状砥石１は、交差穴内のバリを除去するためのツールであり、複数本の線状砥材１１が１つの束１１０としてホルダ１２に保持されている。また、ホルダ１２には、回転中心軸線Ｌ方向に延出された駆動用連結軸１２０が形成されており、駆動用連結軸１２０は、電動の回転駆動装置等に連結される。また、ホルダ１２と線状砥材１１の束１１０の根元に跨るように熱収縮チューブ４０が被覆されている。
A brush-like grindstone 1 shown in FIG. 3 is a tool for removing burrs in an intersection hole, and a plurality of linear abrasives 11 are held in a holder 12 as one bundle 110. The holder 12 is formed with a drive connecting shaft 120 extending in the direction of the rotation center axis L, and the drive connecting shaft 120 is connected to an electric rotary drive device or the like. Moreover, the heat shrinkable tube 40 is covered so as to straddle the root of the bundle 110 of the holder 12 and the linear abrasive material 11.
このように構成したブラシ状砥石１は、線状砥材１１の束１１０を先端側から交差穴に差し込み、この状態で、ブラシ状砥石１を回転中心軸線Ｌ周りに回転させる。その結果、線状砥材１１が遠心力によって径方向外側に広がった状態となり、交差穴に発生したバリを除去することができる。
The brush-shaped grindstone 1 configured in this way inserts the bundle 110 of the linear abrasive material 11 into the cross hole from the tip side, and rotates the brush-shaped grindstone 1 around the rotation center axis L in this state. As a result, the linear abrasive 11 spreads radially outward due to centrifugal force, and burrs generated in the cross holes can be removed.
［線状砥材］
ここで、第１実施例、第２実施例、および第３実施例のブラシ状砥石１に用いられる線状砥材１１を説明する。図４は本発明を適用した第１実施例の線状砥材１１の構成を模式的に示す説明図である。図５は線状砥材１１を構成する集合糸に縒りを加えた様子を模式的に示す説明図であり、集合糸を構成する無機長繊維のうち、２本の無機長繊維を各々、実線および二点鎖線で示してある。図６は本発明を適用した第２実施例の線状砥材１１の構成を模式的に示す説明図である。図７は本発明を適用した第３実施例の線状砥材１１の構成を模式的に示す説明図である。なお、図４、図６、図７において、無機長繊維を円１５０にして集合糸１５および線状砥材１１の断面を表すにあたって、無機長繊維を集合糸１５および線状砥材１１より拡大して少なく表してあるため、無機長繊維を示す円１５０には、一部が欠けているものが含まれているが、集合糸１５および線状砥材１１において、無機長繊維の一部が欠けている訳ではない。第１実施例、第２実施例、および第３実施例のブラシ状砥石１に用いられる線状砥材１１としては、第１実施例に示す断面形状が正方向の線状砥材１１Ａ、第２実施例に示す断面形状が長方形の線状砥材１１Ｂ、または、第３実施例に示す断面形状が楕円形の線状砥材１１Ｃが用いられる。 [Linear abrasive]
Here, the linear abrasive 11 used for the brush-like grindstone 1 of the first embodiment, the second embodiment, and the third embodiment will be described. FIG. 4 is an explanatory view schematically showing the configuration of the linear abrasive material 11 of the first embodiment to which the present invention is applied. FIG. 5 is an explanatory view schematically showing a state in which warpage is added to the aggregate yarn constituting the linear abrasive material 11, and two inorganic long fibers among the inorganic long fibers constituting the aggregate yarn are each shown by solid lines. And indicated by a two-dot chain line. FIG. 6 is an explanatory view schematically showing a configuration of the linear abrasive material 11 of the second embodiment to which the present invention is applied. FIG. 7 is an explanatory view schematically showing the configuration of the linear abrasive material 11 of the third embodiment to which the present invention is applied. In FIGS. 4, 6, and 7, the inorganic long fibers are enlarged from the aggregate yarn 15 and the linear abrasive 11 when the long inorganic fibers are made into a circle 150 to represent the cross section of the aggregate yarn 15 and the linear abrasive 11. Therefore, the circle 150 indicating the inorganic long fiber includes a part lacking, but in the aggregate yarn 15 and the linear abrasive 11, a part of the inorganic long fiber is included. It's not missing. As the linear abrasive 11 used in the brush-like grindstone 1 of the first example, the second example, and the third example, the linear abrasive 11A having a positive cross-sectional shape shown in the first example, The linear abrasive 11B having a rectangular cross-sectional shape shown in the second embodiment or the linear abrasive 11C having an elliptical cross-sectional shape shown in the third embodiment is used.
ここで、第１実施例、第２実施例、および第３実施例のブラシ状砥石１に用いられる線状砥材１１を説明する。図４は本発明を適用した第１実施例の線状砥材１１の構成を模式的に示す説明図である。図５は線状砥材１１を構成する集合糸に縒りを加えた様子を模式的に示す説明図であり、集合糸を構成する無機長繊維のうち、２本の無機長繊維を各々、実線および二点鎖線で示してある。図６は本発明を適用した第２実施例の線状砥材１１の構成を模式的に示す説明図である。図７は本発明を適用した第３実施例の線状砥材１１の構成を模式的に示す説明図である。なお、図４、図６、図７において、無機長繊維を円１５０にして集合糸１５および線状砥材１１の断面を表すにあたって、無機長繊維を集合糸１５および線状砥材１１より拡大して少なく表してあるため、無機長繊維を示す円１５０には、一部が欠けているものが含まれているが、集合糸１５および線状砥材１１において、無機長繊維の一部が欠けている訳ではない。第１実施例、第２実施例、および第３実施例のブラシ状砥石１に用いられる線状砥材１１としては、第１実施例に示す断面形状が正方向の線状砥材１１Ａ、第２実施例に示す断面形状が長方形の線状砥材１１Ｂ、または、第３実施例に示す断面形状が楕円形の線状砥材１１Ｃが用いられる。 [Linear abrasive]
Here, the linear abrasive 11 used for the brush-
［線状砥材の第１実施例］
図４に示すように、本例の線状砥材１１Ａは、その軸線と直交する断面形状が、正方形である。 [First Example of Linear Abrasive Material]
As shown in FIG. 4, the linear abrasive 11 </ b> A of this example has a square cross-sectional shape that is orthogonal to the axis.
図４に示すように、本例の線状砥材１１Ａは、その軸線と直交する断面形状が、正方形である。 [First Example of Linear Abrasive Material]
As shown in FIG. 4, the linear abrasive 11 </ b> A of this example has a square cross-sectional shape that is orthogonal to the axis.
本例の線状砥材１１Ａは、断面のＸ方向およびＹ方向で寸法が等しいので、撓みにくく、腰が強い。従って、線状砥材１１Ａは、凹凸の少ない表面や凹凸のない表面等の研磨に適する。また、線状砥材１１Ａは、突出寸法が長い状態でも十分な腰の強さを有するので、強い腰が求められる交差穴内のバリ取りに適する。さらに、線状砥材１１Ａは、線状砥材１１Ａは、撓みやすさが断面のＸ方向およびＹ方向で略一定であるので、加工時の挙動が規則的となる。よって、線状砥材１１Ａを用いれば、傷が発生しにくく仕上がり面粗度が細かい加工が可能である。従って、線状砥材１１Ａは、仕上がり面粗度が重要な表面等の研磨に適する。
Since the linear abrasive 11A of this example has the same dimensions in the X direction and the Y direction of the cross section, it is difficult to bend and has a strong waist. Therefore, the linear abrasive 11A is suitable for polishing a surface with little unevenness or a surface without unevenness. Moreover, since the linear abrasive 11A has sufficient waist strength even in a state where the protruding dimension is long, it is suitable for deburring in an intersection hole where a strong waist is required. Furthermore, the linear abrasive 11A has a regular behavior during processing because the linear abrasive 11A has a substantially constant flexibility in the X and Y directions of the cross section. Therefore, if the linear abrasive 11A is used, it is possible to perform processing with a small finished surface roughness that hardly causes scratches. Therefore, the linear abrasive 11A is suitable for polishing a surface or the like whose finished surface roughness is important.
また、線状砥材１１Ａは、断面の対角線方向で撓みにくいので、エッジ効果がある。また、線状砥材１１Ａは、角が直角なので、エッジ効果が高い。従って、高い研削性を有する。
Also, the linear abrasive 11A has an edge effect because it is difficult to bend in the diagonal direction of the cross section. Further, since the linear abrasive 11A has a right angle, the edge effect is high. Therefore, it has high grindability.
ここで、図５に示すように、線状砥材１１Ａの集合糸１５には縒りがかけられている場合がある。この場合、線状砥材１１Ａの集合糸１５にかけられている縒りは、縒りの１周期当たりの線状砥材１１Ａの長さ寸法Ｓが１ｃｍ以上、４ｃｍ以下である。縒りの１周期当たりの線状砥材１１Ａの長さ寸法Ｓを４ｃｍ以下とすれば、線状砥材１１Ａの縦割れを防止する効果を得ることができる。また、縒りの１周期当たりの線状砥材１１Ａの長さ寸法Ｓを１ｃｍ以上とすれば、縒りに起因する無機長繊維のケバ立ちを防止できる。
Here, as shown in FIG. 5, the aggregate yarn 15 of the linear abrasive 11A may be twisted. In this case, the twist applied to the collective yarn 15 of the linear abrasive 11A has a length dimension S of the linear abrasive 11A per cycle of the twist of 1 cm or more and 4 cm or less. If the length dimension S of the linear abrasive 11A per one cycle of turning is set to 4 cm or less, the effect of preventing the vertical crack of the linear abrasive 11A can be obtained. Further, if the length dimension S of the linear abrasive 11A per one cycle of twisting is set to 1 cm or more, it is possible to prevent the inorganic long fibers from coming off due to the twisting.
［線状砥材の第２実施例］
図６に示すように、本例の線状砥材１１Ｂは、その軸線と直交する断面形状が、長方形である。 [Second Example of Linear Abrasive Material]
As shown in FIG. 6, the linear abrasive 11 </ b> B of this example has a rectangular cross-sectional shape orthogonal to the axis.
図６に示すように、本例の線状砥材１１Ｂは、その軸線と直交する断面形状が、長方形である。 [Second Example of Linear Abrasive Material]
As shown in FIG. 6, the linear abrasive 11 </ b> B of this example has a rectangular cross-sectional shape orthogonal to the axis.
本例の線状砥材１１Ｂは、幅方向Ｗ（長手方向）の寸法と比較して厚さ方向Ｔ（短手方向）の寸法が小さい。従って、線状砥材１１Ｂは、厚さ方向Ｔに撓みやすく、折れにくい。よって、線状砥材１１Ｂは、加工面に凹凸が多い表面等のバリ取りに適する。また、線状砥材１１Ｂは、断面の厚さ方向が幅方向に対して薄いので、先端が壊れやすく新しい切れ刃を出す自生作用が活発である。さらに、線状砥材１１Ｂが薄いので、目詰まりを起こしにくい。
The linear abrasive 11B of this example has a smaller dimension in the thickness direction T (short direction) compared to the dimension in the width direction W (longitudinal direction). Therefore, the linear abrasive 11B is easily bent in the thickness direction T and is not easily broken. Therefore, the linear abrasive 11B is suitable for deburring a surface having a lot of irregularities on the processed surface. Moreover, since the linear abrasive 11B has a thin cross-sectional thickness direction with respect to the width direction, the self-generated action of easily breaking the tip and generating a new cutting edge is active. Furthermore, since the linear abrasive 11B is thin, clogging is less likely to occur.
また、線状砥材１１Ｂでは、断面の長手方向および対角線方向で撓みにくいので、エッジ効果がある。また、線状砥材１１Ｂは、角が直角なので、エッジ効果が高い。さらに、線状砥材１１Ｂは、断面の厚み方法と幅方向への撓みやすさが違うので、加工時の挙動が不規則となる。従って、線状砥材１１Ｂでは、挙動の不規則さとエッジ効果が合わさって研削能力が高くなる。よって、線状砥材１１Ｂは、ワークの凹凸に馴染みやすく、高い研削性を求められるバリ取りや表面研磨に適する。
Moreover, the linear abrasive 11B has an edge effect because it is difficult to bend in the longitudinal direction and the diagonal direction of the cross section. Further, since the linear abrasive 11B has a right angle, the edge effect is high. Furthermore, since the linear abrasive 11B has a different cross-sectional thickness method and ease of bending in the width direction, the behavior during processing becomes irregular. Therefore, in the linear abrasive 11B, the irregularity of the behavior and the edge effect are combined to increase the grinding ability. Therefore, the linear abrasive 11B is easily adapted to the unevenness of the workpiece and is suitable for deburring and surface polishing that require high grindability.
線状砥材１１Ｂの扁平率（幅方向Ｗの寸法を厚さ方向Ｔの寸法で除算した値）は、１．１以上５．０以下の範囲である。すなわち、偏平率が１．１以上５．０以下の範囲であれば、線状砥材１１Ｂが断面の長手方向で撓みにくくなり、エッジ効果を発揮することが認められる。ここで、偏平率の範囲を２．０以上、５．０以下とすれば、自生作用の活発さ、目詰まりの起こしにくさ、加工時の挙動の不規則さ、エッジ効果について、高い効果を得ることができる。また、偏平率の範囲を１．１以上、１．９以下とすれば、自生作用の活発さ、目詰まりの起こしにくさはやや低下するが、加工時の挙動が比較的規則的となり、面粗さの細かい仕上げ面が得られる。
The flatness (the value obtained by dividing the dimension in the width direction W by the dimension in the thickness direction T) of the linear abrasive 11B is in the range of 1.1 to 5.0. That is, when the flatness is in the range of 1.1 to 5.0, it is recognized that the linear abrasive 11B is less likely to bend in the longitudinal direction of the cross section and exhibits an edge effect. Here, if the range of the flatness ratio is 2.0 or more and 5.0 or less, it is highly effective for the activity of self-generation, the difficulty of clogging, the irregular behavior during processing, and the edge effect. Obtainable. Further, if the flatness range is 1.1 or more and 1.9 or less, the activity of self-generation and the difficulty of clogging are slightly reduced, but the behavior during processing becomes relatively regular, A finished surface with fine roughness can be obtained.
なお、扁平率を大きくすることで研削能力を上げ、扁平率を小さくすることで研削能力を下げるといった調整が可能である。ただし、加工後のワーク面粗度は扁平率を大きくして加工効率を上げると粗くなり、扁平率を下げて加工効率を下げると細かくなる傾向がある。
It is possible to make adjustments such as increasing the grinding ability by increasing the flatness ratio and decreasing the grinding ability by reducing the flatness ratio. However, the workpiece surface roughness after machining tends to become rough when the flatness ratio is increased to increase the machining efficiency, and when the flatness ratio is lowered to lower the machining efficiency, the workpiece surface roughness tends to become finer.
ここで、図５に示すように、線状砥材１１Ｂの集合糸１５には縒りがかけられている場合がある。線状砥材１１Ｂの偏平率の範囲が１．１以上、１．９以下の場合、集合糸１５にかけられている縒りは、縒りの１周期当たりの線状砥材１１Ｂの長さ寸法Ｓが１ｃｍ以上、４ｃｍ以下である。縒りの１周期当たりの線状砥材１１Ｂの長さ寸法Ｓを４ｃｍ以下とすれば、線状砥材１１Ｂの縦割れを防止する効果を得ることができる。また、縒りの１周期当たりの線状砥材１１Ｂの長さ寸法Ｓを１ｃｍ以上とすれば、縒りに起因する無機長繊維のケバ立ちを防止できる。
Here, as shown in FIG. 5, the set yarn 15 of the linear abrasive 11B may be twisted. When the range of the flatness ratio of the linear abrasive 11B is 1.1 or more and 1.9 or less, the twist applied to the collective yarn 15 has a length dimension S of the linear abrasive 11B per one cycle of the twist. 1 cm or more and 4 cm or less. If the length dimension S of the linear abrasive 11B per one cycle of turning is set to 4 cm or less, the effect of preventing the vertical crack of the linear abrasive 11B can be obtained. Further, if the length dimension S of the linear abrasive 11B per one cycle of twisting is 1 cm or more, it is possible to prevent the inorganic long fibers from coming off due to the twisting.
一方、線状砥材１１Ｂの偏平率の範囲が２．０以上、５．０以下の場合、縒りの１周期当たりの線状砥材１１Ｂの長さ寸法Ｓは１０ｃｍ以上、２０ｃｍ以下である。縒りの１周期当たりの線状砥材１１Ｂの長さ寸法Ｓを２０ｃｍ以下とすれば、線状砥材１１Ｂの縦割れを防止する効果を得ることができる。また、縒りの１周期当たりの線状砥材１１Ｂの長さ寸法Ｓを１０ｃｍ以上とすれば、縒りに起因する無機長繊維のケバ立ちを防止できる。すなわち、線状砥材１１Ｂの断面形状の偏平率が２．０以上である場合に集合糸１５に縒りを加えると、断面形状が正方形である場合と比較して厚さ方向に無機長繊維のケバ立ちが発生しやすいが、本例では、縒りの１周期当たりの線状砥材１１Ｂの長さ寸法を、断面形状が正方形である場合と比較して長くしているので、無機長繊維のケバ立ちを防止できる。
On the other hand, when the range of the flatness ratio of the linear abrasive 11B is 2.0 or more and 5.0 or less, the length dimension S of the linear abrasive 11B per cycle of turning is 10 cm or more and 20 cm or less. If the length dimension S of the linear abrasive 11B per cycle of turning is 20 cm or less, the effect of preventing the vertical crack of the linear abrasive 11B can be obtained. Moreover, if the length dimension S of the linear abrasive 11B per one period of twisting is 10 cm or more, it is possible to prevent the inorganic long fibers from being fluffed due to the twisting. That is, when the flatness of the cross-sectional shape of the linear abrasive 11B is 2.0 or more, when the aggregate yarn 15 is warped, the inorganic long fibers are more elongated in the thickness direction than when the cross-sectional shape is square. In this example, the length of the linear abrasive 11B per turn is longer than that in the case where the cross-sectional shape is square. It can prevent standing.
［線状砥材の第３実施例］
図７に示すように、本例の線状砥材１１Ｃは、その軸線と直交する断面形状が、楕円形である。 [Third embodiment of linear abrasive]
As shown in FIG. 7, the linear abrasive 11C of this example has an elliptical cross-sectional shape orthogonal to the axis.
図７に示すように、本例の線状砥材１１Ｃは、その軸線と直交する断面形状が、楕円形である。 [Third embodiment of linear abrasive]
As shown in FIG. 7, the linear abrasive 11C of this example has an elliptical cross-sectional shape orthogonal to the axis.
本例の線状砥材１１Ｃは、幅方向Ｗ（長手方向）の寸法と比較して厚さ方向Ｔ（短手方向）の寸法が小さい。従って、線状砥材１１Ｃは、厚さ方向Ｔに撓みやすく、折れにくい。よって、線状砥材１１Ｃは、加工面に凹凸が多い表面等のバリ取りに適する。また、線状砥材１１Ｃは、断面の厚み方向が幅方向に対して薄いので、先端が壊れやすく新しい切れ刃を出す自生作用が活発である。さらに、線状砥材１１Ｃが薄いので、目詰まりを起こしにくい。
The linear abrasive 11C of this example has a smaller dimension in the thickness direction T (short direction) than in the width direction W (longitudinal direction). Therefore, the linear abrasive 11C is easily bent in the thickness direction T and is not easily broken. Therefore, the linear abrasive 11C is suitable for deburring a surface having a lot of irregularities on the processed surface. Moreover, since the linear abrasive 11C has a thin cross-sectional thickness direction with respect to the width direction, the tip is easily broken and a self-generating action of generating a new cutting edge is active. Furthermore, since the linear abrasive 11C is thin, clogging is less likely to occur.
また、線状砥材１１Ｃでは、断面の長手方向で撓みにくいので、エッジ効果がある。さらに、線状砥材１１Ｃは、断面の厚み方法と幅方向への撓みやすさが違うので、加工時の挙動が不規則となる。従って、線状砥材１１Ｃでは、挙動の不規則さとエッジ効果が合わさって研削能力が高くなる。よって、線状砥材１１Ｃは、ワークの凹凸に馴染みやすく、高い研削性を求められるバリ取りや表面研磨に適する。
Further, the linear abrasive 11C has an edge effect because it is difficult to bend in the longitudinal direction of the cross section. Furthermore, since the linear abrasive 11C has a different cross-sectional thickness method and ease of bending in the width direction, the behavior during processing becomes irregular. Therefore, in the linear abrasive 11C, the irregularity of the behavior and the edge effect are combined to increase the grinding ability. Therefore, the linear abrasive 11C is easily adapted to the unevenness of the workpiece and is suitable for deburring and surface polishing that require high grindability.
線状砥材１１Ｃの扁平率（幅方向Ｗの寸法を厚さ方向Ｔの寸法で除算した値）は、１．１以上５．０以下の範囲である。すなわち、偏平率が１．１以上５．０以下の範囲であれば、線状砥材１１Ｃが断面の長手方向で撓みにくくなり、エッジ効果を発揮することが認められる。ここで、偏平率の範囲を２．０以上、５．０以下とすれば、自生作用の活発さ、目詰まりの起こしにくさ、加工時の挙動の不規則さ、エッジ効果について、高い効果を得ることができる。また、偏平率の範囲を１．１以上、１．９以下とすれば自生作用の活発さ、目詰まりの起こしにくさはやや低下するが、加工時の挙動が比較的規則的となり、面粗さの細かい仕上げ面が得られる。
The flatness of the linear abrasive 11C (the value obtained by dividing the dimension in the width direction W by the dimension in the thickness direction T) is in the range of 1.1 to 5.0. That is, when the flatness is in the range of 1.1 to 5.0, it is recognized that the linear abrasive 11C is less likely to bend in the longitudinal direction of the cross section and exhibits an edge effect. Here, if the range of the flatness ratio is 2.0 or more and 5.0 or less, it is highly effective for the activity of self-generation, the difficulty of clogging, the irregular behavior during processing, and the edge effect. Obtainable. Moreover, if the range of the flatness ratio is 1.1 or more and 1.9 or less, the activity of self-generation and the difficulty of clogging are slightly reduced, but the behavior during processing becomes relatively regular, and the surface roughness becomes rough. A fine finished surface can be obtained.
さらに、楕円形の線状砥材１１Ｃでは、断面に角がないので、ワーク加工時にスクラッチ等のキズを付けることが無く、細かい面粗度を要求される表面研磨等に使用することができる。
Furthermore, since the elliptical linear abrasive 11C has no corners in the cross section, it can be used for surface polishing or the like that requires fine surface roughness without scratching scratches during workpiece machining.
なお、扁平率を大きくすることで研削能力を上げ、扁平率を小さくすることで研削能力を下げるといった調整が可能である。ただし、加工後のワーク面粗度は扁平率を大きくして加工効率を上げると粗くなり、扁平率を下げて加工効率を下げると細かくなる傾向がある。
It is possible to make adjustments such as increasing the grinding ability by increasing the flatness ratio and decreasing the grinding ability by reducing the flatness ratio. However, the workpiece surface roughness after machining tends to become rough when the flatness ratio is increased to increase the machining efficiency, and when the flatness ratio is lowered to lower the machining efficiency, the workpiece surface roughness tends to become finer.
ここで、図５に示すように、線状砥材１１Ｃの集合糸１５には縒りがかけられている場合がある。線状砥材１１Ｃの偏平率の範囲が１．１以上、１．９以下の場合、集合糸１５にかけられている縒りは、縒りの１周期当たりの線状砥材１１Ｃの長さ寸法Ｓが１ｃｍ以上、４ｃｍ以下である。また、線状砥材１１Ｃの偏平率の範囲が２．０以上、５．０以下の場合、縒りの１周期当たりの線状砥材１１Ｃの長さ寸法Ｓを１０ｃｍ以上、２０ｃｍ以下である。このようにすれば、断面形状が長方形の線状砥材１１Ｂの場合と同様の効果が得られる。
Here, as shown in FIG. 5, the set yarn 15 of the linear abrasive 11C may be twisted. When the range of the flatness ratio of the linear abrasive 11C is 1.1 or more and 1.9 or less, the twist applied to the collective yarn 15 has a length dimension S of the linear abrasive 11C per one cycle of the twist. 1 cm or more and 4 cm or less. Moreover, when the range of the flatness ratio of the linear abrasive 11C is 2.0 or more and 5.0 or less, the length dimension S of the linear abrasive 11C per one cycle of turning is 10 cm or more and 20 cm or less. In this way, the same effect as in the case of the linear abrasive 11B having a rectangular cross-sectional shape can be obtained.
［線状砥材の製造方法の第１実施例］
図８は線状砥材の製造方法の第１実施例を示す説明図であり、図８（ａ）、（ｂ）には、含浸工程、および含浸工程以降の工程が表されている。 [First embodiment of manufacturing method of linear abrasive]
FIG. 8 is an explanatory view showing a first embodiment of a method for manufacturing a linear abrasive, and FIGS. 8A and 8B show an impregnation step and steps after the impregnation step.
図８は線状砥材の製造方法の第１実施例を示す説明図であり、図８（ａ）、（ｂ）には、含浸工程、および含浸工程以降の工程が表されている。 [First embodiment of manufacturing method of linear abrasive]
FIG. 8 is an explanatory view showing a first embodiment of a method for manufacturing a linear abrasive, and FIGS. 8A and 8B show an impregnation step and steps after the impregnation step.
線状砥材１１を製造するにあたっては、まず、図８（ａ）に示す含浸工程において、無機長繊維の集合糸１５に未硬化の樹脂バインダー１６を含浸する。樹脂バインダー１６としては、熱硬化性樹脂のエポキシ樹脂やフェノール樹脂、シリコーン樹脂、熱可塑性樹脂のポリエステル樹脂、ポリプロピレン樹脂、ポリアミド樹脂などの樹脂を用いることができる。本形態において、集合糸１５は、円筒状あるいは円柱状のボビン５１に巻回された状態で供給され、樹脂バインダー１６は、樹脂バインダー槽５３に貯留されている。また、集合糸１５は、ボビン５２に巻回されながらボビン５１から引き出されると、樹脂バインダー槽５３の内部に配置されたローラーなどのガイド部材５４、および樹脂バインダー槽５３の外部に配置されたローラー等のガイド部材５５、５６に案内されながら進行する。また、集合糸１５は、ボビン５２に巻回されるまでの間に樹脂バインダー槽５３に貯留されている樹脂バインダー１６に浸漬され、樹脂バインダー１６が含浸される。そして、樹脂バインダー１６が含浸された集合糸１５は、重ならないようにボビン５２に巻回される。
In manufacturing the linear abrasive 11, first, in the impregnation step shown in FIG. 8A, the inorganic continuous fiber aggregate yarn 15 is impregnated with an uncured resin binder 16. As the resin binder 16, a resin such as an epoxy resin of a thermosetting resin, a phenol resin, a silicone resin, a polyester resin of a thermoplastic resin, a polypropylene resin, or a polyamide resin can be used. In this embodiment, the collecting yarn 15 is supplied in a state of being wound around a cylindrical or columnar bobbin 51, and the resin binder 16 is stored in the resin binder tank 53. Further, when the collecting yarn 15 is pulled out from the bobbin 51 while being wound around the bobbin 52, a guide member 54 such as a roller disposed inside the resin binder tank 53 and a roller disposed outside the resin binder tank 53. It progresses while being guided by guide members 55 and 56 such as. In addition, the aggregate yarn 15 is immersed in the resin binder 16 stored in the resin binder tank 53 before being wound around the bobbin 52, and is impregnated with the resin binder 16. The aggregate yarn 15 impregnated with the resin binder 16 is wound around the bobbin 52 so as not to overlap.
次に、ボビン５２に巻回された含浸済みの集合糸１５は、図８（ｂ）に示すように、整形工程として、ダイス６１に通る際に断面形状が整形された後、樹脂硬化工程において、加熱炉６２に通され、樹脂バインダー１６が硬化される。その結果、複数本の無機長繊維の集合糸１５が樹脂バインダー１６によって固められた線状砥材１１が得られる。このようにして得られた線状砥材１１は、樹脂硬化工程の後、所定の寸法に切断される。また、線状砥材１１は、ボビン（図示せず）に巻回された後、所定の寸法に切断されることもある。
Next, as shown in FIG. 8B, the impregnated collective yarn 15 wound around the bobbin 52 is shaped in a cross-section when passing through the die 61 as a shaping step, and then in a resin curing step. The resin binder 16 is cured by passing through the heating furnace 62. As a result, the linear abrasive 11 in which the aggregate yarn 15 of a plurality of inorganic long fibers is hardened by the resin binder 16 is obtained. The linear abrasive 11 thus obtained is cut into a predetermined dimension after the resin curing step. Further, the linear abrasive 11 may be cut into a predetermined dimension after being wound around a bobbin (not shown).
ここで、ダイス６１には、含浸済みの集合糸１５が通る通路（図示せず）が形成されており、かかる通路は、ダイス６１の両端面で開口している。このため、ダイス６１の端面には通路の開口部６１０が設けられており、集合糸１５はダイス６１を通過する際、通路および開口部６１０の形状に対応する断面形状に整形される。その結果、ダイス６１の通路および開口部６１０の形状に対応する断面形状の線状砥材１１が得られる。
Here, a passage (not shown) through which the impregnated collective yarn 15 passes is formed in the die 61, and the passage opens at both end faces of the die 61. For this reason, an opening 610 of the passage is provided on the end face of the die 61, and the aggregate yarn 15 is shaped into a cross-sectional shape corresponding to the shape of the passage and the opening 610 when passing through the die 61. As a result, the linear abrasive 11 having a cross-sectional shape corresponding to the shape of the passage of the die 61 and the opening 610 is obtained.
すなわち、開口部６１０の形状が正方形であれば、図４に示すように、断面形状が正方形の線状砥材１１（線状砥材１１Ａ）が得られる。また、開口部６１０の形状が長方形であれば、図６に示すように、断面形状が長方形の線状砥材１１（線状砥材１１Ｂ）が得られる。同様に、開口部６１０の形状が楕円形であれば、図７に示すように、断面形状が楕円形の線状砥材１１（線状砥材１１Ｃ）が得られる。なお、ダイス６１において、通路は、貫通孔、およびダイス６１の側面で開口する溝のいずれの構成であってもよい。
That is, if the shape of the opening 610 is square, a linear abrasive 11 (linear abrasive 11A) having a square cross-sectional shape is obtained as shown in FIG. Moreover, if the shape of the opening part 610 is a rectangle, as shown in FIG. 6, the linear abrasive 11 (linear abrasive 11B) whose cross-sectional shape is a rectangle will be obtained. Similarly, if the shape of the opening 610 is elliptical, as shown in FIG. 7, a linear abrasive 11 (linear abrasive 11C) having an elliptical cross-sectional shape is obtained. In the dice 61, the passage may have any configuration of a through hole and a groove opened on the side surface of the dice 61.
以上説明したように、本形態では、線状砥材１１を製造するにあたっては、含浸工程において集合糸１５に未硬化の樹脂バインダー１６を含浸した後、樹脂硬化工程において樹脂バインダー１６を硬化させる前の整形工程において樹脂バインダー１６を含浸した集合糸１５をダイス６１に通して集合糸１５の断面形状を整形する。従って、線状砥材１１の断面形状を容易に制御することができる。
As described above, in the present embodiment, when the linear abrasive 11 is manufactured, after the aggregate yarn 15 is impregnated with the uncured resin binder 16 in the impregnation step, before the resin binder 16 is cured in the resin curing step. In the shaping step, the aggregate yarn 15 impregnated with the resin binder 16 is passed through the die 61 to shape the cross-sectional shape of the aggregate yarn 15. Therefore, the cross-sectional shape of the linear abrasive 11 can be easily controlled.
［線状砥材の製造方法の第２実施例］
図９は線状砥材の製造方法の第２実施例を示す説明図であり、図９（ａ）、（ｂ）には、含浸工程、および含浸工程以降の工程が表されている。なお、図９に示す形態の基本的な構成は、図８を参照して説明した形態と同様であるため、共通する部分には同一の符号を付してそれらの説明を省略する。 [Second Embodiment of Manufacturing Method of Linear Abrasive Material]
FIG. 9 is an explanatory view showing a second embodiment of the method for manufacturing a linear abrasive material. FIGS. 9A and 9B show an impregnation step and steps after the impregnation step. Since the basic configuration of the form shown in FIG. 9 is the same as that described with reference to FIG. 8, common portions are denoted by the same reference numerals and description thereof is omitted.
図９は線状砥材の製造方法の第２実施例を示す説明図であり、図９（ａ）、（ｂ）には、含浸工程、および含浸工程以降の工程が表されている。なお、図９に示す形態の基本的な構成は、図８を参照して説明した形態と同様であるため、共通する部分には同一の符号を付してそれらの説明を省略する。 [Second Embodiment of Manufacturing Method of Linear Abrasive Material]
FIG. 9 is an explanatory view showing a second embodiment of the method for manufacturing a linear abrasive material. FIGS. 9A and 9B show an impregnation step and steps after the impregnation step. Since the basic configuration of the form shown in FIG. 9 is the same as that described with reference to FIG. 8, common portions are denoted by the same reference numerals and description thereof is omitted.
本形態のブラシ状砥石１の製造方法において、線状砥材１１を製造するにあたっては、まず、図８（ａ）を参照して説明した含浸工程と同様、図９（ａ）に示す含浸工程において、無機長繊維の集合糸１５に未硬化の樹脂バインダー１６を含浸する。本形態において、集合糸１５は、円筒状あるいは円柱状のボビン５１に巻回された状態で供給され、ボビン５２に巻回されるまでの間に樹脂バインダー槽５３に貯留されている樹脂バインダー１６に浸漬され、樹脂バインダー１６が含浸される。
In the manufacturing method of the brush-like grindstone 1 of this embodiment, when manufacturing the linear abrasive 11, first, the impregnation step shown in FIG. 9A is similar to the impregnation step described with reference to FIG. In FIG. 1, the uncured resin binder 16 is impregnated into the aggregate yarn 15 of inorganic long fibers. In this embodiment, the collective yarn 15 is supplied in a state of being wound around a cylindrical or columnar bobbin 51, and the resin binder 16 stored in the resin binder tank 53 before being wound around the bobbin 52. And the resin binder 16 is impregnated.
ここで、ボビン５１には、集合糸１５の送り出し方向に延在する軸線Ｐ周りにボビン５１を回転させる駆動装置５９が設けられており、含浸工程を行う際、集合糸１５の送り出しに同期して、駆動装置５９は、ボビン５１を軸線Ｐ周りに回転させる。従って、集合糸１５には、図５に模式的に示すように、縒りが加えられる。縒りは、図５に示すように、断面形状が正方形の線状砥材１１を製造する場合、縒りの１周期当たりの線状砥材の長さ寸法Ｓは、１ｃｍ以上、４ｃｍ以下である。これに対して、図６および図７に示すように、断面形状が長方形または楕円形の線状砥材１１を製造する場合、縒りの１周期当たりの線状砥材の長さ寸法Ｓは、１ｃｍ以上、４ｃｍ以下、または、１０ｃｍ以上、２０ｃｍ以下である。
Here, the bobbin 51 is provided with a driving device 59 for rotating the bobbin 51 around an axis P extending in the feeding direction of the collective yarn 15, and is synchronized with the sending of the collective yarn 15 during the impregnation step. Thus, the driving device 59 rotates the bobbin 51 around the axis P. Therefore, as shown schematically in FIG. 5, the aggregate yarn 15 is warped. As shown in FIG. 5, when manufacturing a linear abrasive material 11 having a square cross-sectional shape, the length dimension S of the linear abrasive material per period of winding is 1 cm or more and 4 cm or less. On the other hand, as shown in FIG. 6 and FIG. 7, when the linear abrasive 11 having a rectangular or elliptical cross-sectional shape is manufactured, the length dimension S of the linear abrasive per cycle of turning is: It is 1 cm or more and 4 cm or less, or 10 cm or more and 20 cm or less.
次に、ボビン５２に巻回された含浸済みの集合糸１５は、図９（ｂ）に示すように、整形工程として、ダイス６１に通る際に断面形状が整形された後、樹脂硬化工程において、加熱炉６２に通され、樹脂バインダー１６が硬化される。その結果、複数本の無機長繊維の集合糸１５が樹脂バインダー１６によって固められた線状砥材１１が得られる。かかる線状砥材１１は、樹脂硬化工程の後、所定の寸法に切断される。また、線状砥材１１は、ボビン（図示せず）に巻回された後、所定の寸法に切断されることもある。
Next, as shown in FIG. 9B, the impregnated collective yarn 15 wound around the bobbin 52 is shaped in a cross-sectional shape when passing through the die 61 as a shaping step, and then in a resin curing step. The resin binder 16 is cured by passing through the heating furnace 62. As a result, the linear abrasive 11 in which the aggregate yarn 15 of a plurality of inorganic long fibers is hardened by the resin binder 16 is obtained. The linear abrasive 11 is cut into a predetermined dimension after the resin curing step. Further, the linear abrasive 11 may be cut into a predetermined dimension after being wound around a bobbin (not shown).
ここで、ダイス６１は、含浸済みの集合糸１５が通る開口部６１０を有しており、集合糸１５はダイス６１を通過する際、開口部６１０の形状に対応する断面形状に整形される。その結果、正方形、長方形または楕円形の断面形状の線状砥材１１が得られる。
Here, the die 61 has an opening 610 through which the impregnated aggregate yarn 15 passes, and the aggregate yarn 15 is shaped into a cross-sectional shape corresponding to the shape of the opening 610 when passing through the die 61. As a result, a linear abrasive 11 having a square, rectangular or elliptical cross-sectional shape is obtained.
以上説明したように、本形態では、線状砥材１１を製造するにあたっては、含浸工程において集合糸１５に未硬化の樹脂バインダー１６を含浸した後、樹脂硬化工程において樹脂バインダー１６を硬化させる前の整形工程において樹脂バインダー１６を含浸した集合糸１５をダイス６１に通して集合糸１５の断面形状を整形する。このため、線状砥材１１の断面形状を容易に制御することができる。従って、表面の研磨や、交差穴のバリ取り等、用途に適した断面形状の線状砥材を備えたブラシ状砥石１を実現することができる。
As described above, in the present embodiment, when the linear abrasive 11 is manufactured, after the aggregate yarn 15 is impregnated with the uncured resin binder 16 in the impregnation step, before the resin binder 16 is cured in the resin curing step. In the shaping step, the aggregate yarn 15 impregnated with the resin binder 16 is passed through the die 61 to shape the cross-sectional shape of the aggregate yarn 15. For this reason, the cross-sectional shape of the linear abrasive 11 can be easily controlled. Therefore, it is possible to realize the brush-like grindstone 1 provided with a linear abrasive having a cross-sectional shape suitable for applications such as surface polishing and deburring of cross holes.
また、本形態では、含浸工程の前に集合糸１５に縒りをかける縒り工程を行うので、集合糸１５に縒りをかけた分、集合糸１５において無機長繊維が纏まった状態になる。従って、無機長繊維が互いに平行に延在している集合糸１５を用いる場合に比して、線状砥材１１の断面形状を制御しやすい。
Further, in this embodiment, since the twisting process for twisting the collective yarn 15 is performed before the impregnation process, the inorganic continuous fibers are gathered in the collective yarn 15 as much as the collective yarn 15 is twisted. Therefore, it is easier to control the cross-sectional shape of the linear abrasive material 11 than in the case of using the aggregate yarn 15 in which the inorganic long fibers extend in parallel with each other.
ここで、線状砥材１１の断面形状が正方形である場合、縒りの１周期当たりの線状砥材１１の長さ寸法は、１ｃｍ以上、４ｃｍ以下である。このように、縒りの１周期当たりの線状砥材１１の長さ寸法は４ｃｍ以下であるため、縒りの効果を発現させることができる。また、縒りの１周期当たりの線状砥材１１の長さ寸法は１ｃｍ以上であるため、縒りに起因する無機長繊維のケバ立ちを防止することができる。
Here, when the cross-sectional shape of the linear abrasive material 11 is a square, the length dimension of the linear abrasive material 11 per period of winding is 1 cm or more and 4 cm or less. Thus, since the length dimension of the linear abrasive 11 per one period of winding is 4 cm or less, the effect of winding can be expressed. Moreover, since the length dimension of the linear abrasive 11 per one period of twist is 1 cm or more, it is possible to prevent the inorganic long fibers from being fluffed due to the twist.
また、線状砥材１１の断面形状が長方形または楕円形である場合、その偏平率の範囲が１．１以上、１．９以下のときには、縒りの１周期当たりの線状砥材１１の長さ寸法は、１ｃｍ以上、４ｃｍ以下である。縒りの１周期当たりの線状砥材１１Ｃの長さ寸法Ｓを４ｃｍ以下とすれば、断面形状が正方形の線状砥材１１と同様に、線状砥材１１の縦割れを防止する効果を得ることができる。縒りの１周期当たりの線状砥材１１Ｃの長さ寸法Ｓを１ｃｍ以上とすれば、断面形状が正方形の線状砥材１１と同様に、縒りに起因する無機長繊維のケバ立ちを防止できる。
Further, when the cross-sectional shape of the linear abrasive 11 is a rectangle or an ellipse, the length of the linear abrasive 11 per one cycle of twisting when the flatness range is 1.1 or more and 1.9 or less. The size is 1 cm or more and 4 cm or less. If the length dimension S of the linear abrasive 11C per cycle of turning is set to 4 cm or less, the effect of preventing vertical cracking of the linear abrasive 11 as in the case of the linear abrasive 11 having a square cross-sectional shape. Obtainable. If the length dimension S of the linear abrasive 11C per one period of twist is set to 1 cm or more, as with the linear abrasive 11 having a square cross-sectional shape, it is possible to prevent the inorganic long fibers from flaking due to the twist. .
さらに、線状砥材１１の断面形状が長方形または楕円形である場合、その偏平率の範囲が２．０以上、５．０以下のときには、縒りの１周期当たりの線状砥材１１の長さ寸法は、１０ｃｍ以上、２０ｃｍ以下である。すなわち、断面形状の偏平率が２．０以上の線状砥材１１では、線状砥材１１の断面形状が正方形である場合に比して、縒りの１周期当たりの線状砥材１１の長さ寸法が長い。従って、偏平率が２．０以上と大きくても、厚さ方向および幅方向の双方において集合糸１５では、無機長繊維が纏まった状態になる。よって、無機長繊維が互いに平行に延在している集合糸１５を用いる場合に比して、線状砥材１１の断面形状を制御しやすい。また、線状砥材１１の断面形状の偏平率が２．０以上の長方形や楕円形状である場合に縒りを加えると、厚さ方向に無機長繊維のケバ立ちが発生しやすいが、本例では、線状砥材１１の断面形状が正方形である場合に比して、縒りの１周期当たりの線状砥材１１の長さ寸法が長くしてあるので、無機長繊維のケバ立ちを防止することができる。特に本形態では、線状砥材１１の断面形状の偏平率が２．０以上の長方形や楕円形状である場合、縒りの１周期当たりの線状砥材１１の長さ寸法は２０ｃｍ以下であるため、縒りの効果を発現させることができる。また、縒りの１周期当たりの線状砥材１１の長さ寸法は１０ｃｍ以上であるため、縒りに起因する無機長繊維のケバ立ちを防止することができる。
Furthermore, when the cross-sectional shape of the linear abrasive 11 is a rectangle or an ellipse, the length of the linear abrasive 11 per one cycle of twisting when the flatness range is 2.0 or more and 5.0 or less. The size is 10 cm or more and 20 cm or less. That is, in the linear abrasive material 11 having a cross-sectional flatness of 2.0 or more, the linear abrasive material 11 per cycle of the grinding is compared with a case where the linear abrasive material 11 has a square cross-sectional shape. Long length dimension. Therefore, even if the flatness ratio is as large as 2.0 or more, the inorganic yarns are gathered in the aggregate yarn 15 in both the thickness direction and the width direction. Therefore, it is easier to control the cross-sectional shape of the linear abrasive material 11 than in the case of using the aggregate yarn 15 in which the inorganic long fibers extend in parallel with each other. In addition, if the cross-sectional shape of the linear abrasive 11 is a rectangle or an ellipse having a flatness ratio of 2.0 or more, an increase in twisting tends to cause inorganic long fiber flaking in the thickness direction. Then, compared with the case where the cross-sectional shape of the linear abrasive 11 is a square, since the length dimension of the linear abrasive 11 per one period of winding is made long, the inorganic long fiber is prevented from being stripped. can do. In particular, in this embodiment, when the flatness of the cross-sectional shape of the linear abrasive material 11 is a rectangle or an elliptical shape of 2.0 or more, the length dimension of the linear abrasive material 11 per period of twist is 20 cm or less. For this reason, the effect of resentment can be expressed. Moreover, since the length dimension of the linear abrasive 11 per one period of twist is 10 cm or more, it is possible to prevent the inorganic long fiber from being fluffed due to twist.
なお、第１実施例および第２実施例では、整形工程の後、樹脂硬化工程を行ったが、ダイス６１に加熱装置を設け、整形工程と樹脂硬化工程とを同時に行ってもよい。
In the first embodiment and the second embodiment, the resin curing process is performed after the shaping process. However, a heating device may be provided in the die 61, and the shaping process and the resin curing process may be performed simultaneously.
また、第１実施例および第２実施例では、ダイス６１に通して集合糸１５の断面形状を整形する整形工程を行った後に、整形された線状砥材を所定のサイズの断面形状にカッターなどで切り出すサイズ調整工程を備えることができる。
In the first and second embodiments, after the shaping process for shaping the cross-sectional shape of the aggregate yarn 15 through the die 61 is performed, the shaped linear abrasive material is cut into a cross-sectional shape having a predetermined size. The size adjustment process cut out by the above can be provided.
［線状砥材の製造方法の第３実施例］
第１実施例および第２実施例では、ダイス６１に通して集合糸１５の断面形状を整形しているが、集合糸１５をダイス６１に通して断面形状を整形する整形工程を省き、含浸工程および樹脂硬化工程を連続して行った後に、集合糸１５の外周面を研磨して、その断面形状を正方形、長方形または楕円形とする研磨整形工程を備えることもできる。 [Third embodiment of manufacturing method of linear abrasive]
In the first and second embodiments, the cross-sectional shape of thecollective yarn 15 is shaped by passing through the die 61, but the shaping step of shaping the cross-sectional shape by passing the collective yarn 15 through the die 61 is omitted, and the impregnation step And after performing a resin hardening process continuously, the outer peripheral surface of the aggregate yarn 15 can be grind | polished, and the grinding | polishing shaping process which makes the cross-sectional shape square, a rectangle, or an ellipse can also be provided.
第１実施例および第２実施例では、ダイス６１に通して集合糸１５の断面形状を整形しているが、集合糸１５をダイス６１に通して断面形状を整形する整形工程を省き、含浸工程および樹脂硬化工程を連続して行った後に、集合糸１５の外周面を研磨して、その断面形状を正方形、長方形または楕円形とする研磨整形工程を備えることもできる。 [Third embodiment of manufacturing method of linear abrasive]
In the first and second embodiments, the cross-sectional shape of the
Claims (9)
- 無機長繊維の集合糸を樹脂バインダーによって固めた線状砥材において、
断面形状が正方形、長方形または楕円形であることを特徴とする線状砥材。 In the linear abrasive material in which the aggregate yarn of inorganic long fibers is hardened with a resin binder,
A linear abrasive having a cross-sectional shape of a square, rectangle or ellipse. - 請求項１において、
長方形または楕円形の断面形状を備え、
偏平率が１．１以上、５．０以下であることを特徴とする線状砥材。 In claim 1,
With a rectangular or oval cross-sectional shape,
A linear abrasive having a flatness ratio of 1.1 or more and 5.0 or less. - 請求項１において、
前記集合糸には縒りがかけられていることを特徴とする線状砥材。 In claim 1,
A linear abrasive characterized in that the aggregate yarn is warped. - 請求項３において、
正方形の断面形状を備え、
前記縒りの１周期当たりの前記線状砥材の長さ寸法は、１ｃｍ以上、４ｃｍ以下であることを特徴とする線状砥材。 In claim 3,
With a square cross-sectional shape,
The linear abrasive is characterized in that a length of the linear abrasive per cycle of the twist is 1 cm or more and 4 cm or less. - 請求項３において、
長方形または楕円形の断面形状を備え、
前記縒りの１周期当たりの前記線状砥材の長さ寸法は、偏平率の範囲が１．１以上、１．９以下の場合、１ｃｍ以上、４ｃｍ以下であり、偏平率の範囲が２．０以上、５．０以下の場合、１０ｃｍ以上、２０ｃｍ以下であることを特徴とする線状砥材。 In claim 3,
With a rectangular or oval cross-sectional shape,
The length dimension of the linear abrasive per cycle of the twist is 1 cm or more and 4 cm or less when the flatness range is 1.1 or more and 1.9 or less, and the flatness range is 2. In the case of 0 or more and 5.0 or less, the linear abrasive is 10 cm or more and 20 cm or less. - 複数本の線状砥材と、
前記複数本の線状砥材を束として保持するホルダと、を有し、
各線状砥材は、無機長繊維の集合糸が樹脂バインダーによって固められたものであり、
各線状砥材の断面形状は、正方形、長方形または楕円形であることを特徴とするブラシ状砥石。 A plurality of linear abrasives;
A holder for holding the plurality of linear abrasives as a bundle,
Each linear abrasive is a set of inorganic filaments solidified by a resin binder,
A brush-like grindstone characterized in that the cross-sectional shape of each linear abrasive is a square, a rectangle or an ellipse. - 無機長繊維の集合糸が樹脂バインダーによって固められた線状砥材の製造方法において、
前記集合糸に未硬化の樹脂バインダーを含浸する含浸工程と、
前記樹脂バインダーを含浸した前記集合糸をダイスに通して当該集合糸の断面形状を正方形、長方形または楕円形に整形する整形工程と、
前記整形工程の後、または前記整形工程と同時に前記樹脂バインダーを硬化させる樹脂硬化工程と、
を行うことを特徴とする線状砥材の製造方法。 In the method for producing a linear abrasive material in which the aggregate yarn of inorganic long fibers is hardened by a resin binder,
An impregnation step of impregnating the aggregate yarn with an uncured resin binder;
A shaping step in which the aggregate yarn impregnated with the resin binder is passed through a die to shape the cross-sectional shape of the aggregate yarn into a square, a rectangle or an ellipse;
A resin curing step of curing the resin binder after the shaping step or simultaneously with the shaping step;
The manufacturing method of the linear abrasive characterized by performing. - 請求項７において、
前記含浸工程の前に前記集合糸に縒りをかける縒り工程を行うことを特徴とする線状砥材の製造方法。 In claim 7,
A method for producing a linear abrasive material, comprising a step of twisting the aggregate yarn before the impregnation step. - 無機長繊維の集合糸が樹脂バインダーによって固められた線状砥材の製造方法において、
前記集合糸に未硬化の樹脂バインダーを含浸する含浸工程と、
前記樹脂バインダーを硬化させる樹脂硬化工程と、
前記集合糸の外周面を研磨して、その断面形状を正方形、長方形または楕円形に整形する研磨整形工程と、
を行うことを特徴とする線状砥材の製造方法。 In the method for producing a linear abrasive material in which the aggregate yarn of inorganic long fibers is hardened by a resin binder,
An impregnation step of impregnating the aggregate yarn with an uncured resin binder;
A resin curing step for curing the resin binder;
Polishing and shaping the outer peripheral surface of the aggregate yarn, shaping the cross-sectional shape into a square, rectangle or ellipse,
The manufacturing method of the linear abrasive characterized by performing.
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| Application Number | Priority Date | Filing Date | Title |
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| EP14759583.9A EP2965866B1 (en) | 2013-03-08 | 2014-03-07 | Linear grinding material, brush-shaped grindstone and method for manufacturing linear grinding material |
| US14/773,307 US20160016293A1 (en) | 2013-03-08 | 2014-03-07 | Linear grinding member, brush-like grinding stone, and method for manufacturing linear grinding member |
| MX2015011248A MX2015011248A (en) | 2013-03-08 | 2014-03-07 | Linear grinding material, brush-shaped grindstone and method for manufacturing linear grinding material. |
| CN201480012744.3A CN105026108A (en) | 2013-03-08 | 2014-03-07 | Linear grinding material, brush-shaped grindstone and method for manufacturing linear grinding material |
| KR1020157027806A KR20150126668A (en) | 2013-03-08 | 2014-03-07 | Linear grinding material, brush-shaped grindstone and method for manufacturing linear grinding material |
| BR112015021636-6A BR112015021636B1 (en) | 2013-03-08 | 2014-03-07 | LINEAR GRINDING MEMBER, BRUSH SIMILAR GRINDING STONE AND METHOD FOR MANUFACTURING LINEAR GRINDING MEMBER |
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| JP2013046982A JP6325195B2 (en) | 2013-03-08 | 2013-03-08 | Method for manufacturing brush-like grindstone, linear abrasive and brush-like grindstone |
| JP2013-046982 | 2013-03-08 |
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| EP2965866A1 (en) | 2016-01-13 |
| BR112015021636B1 (en) | 2021-11-23 |
| CN105026108A (en) | 2015-11-04 |
| BR112015021636A2 (en) | 2020-01-28 |
| JP6325195B2 (en) | 2018-05-16 |
| EP2965866A4 (en) | 2016-11-02 |
| JP2014172126A (en) | 2014-09-22 |
| EP2965866B1 (en) | 2020-04-22 |
| KR20150126668A (en) | 2015-11-12 |
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| MX2015011248A (en) | 2016-03-04 |
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