BRUSH MATERIAL
A brush material includes a resin brush bristle material that is composed of a bundle of plural resin brush bristles each containing a coarse-grained abrasive and having a circular or polygonal section, and a covering layer that contains a powdered abrasive and is provided on a surface of the resin brush bristle material.
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1. Field of the Invention
The present invention relates to a brush material that can be used for polishing the surface of a workpiece or for polishing and grinding it for burring.
2. Description of the Related Art
A conventionally known brush material that can be used for polishing the surface of a workpiece or for polishing and grinding it for burring is, for example, a brush material that includes as a core a plurality of synthetic fibers containing abrasive particles and as a covering a thin multifilament of synthetic fiber provided around the core (see JP-A SHO 63-318907).
However, in the case where the brush material including the covering of the thin multifilament of synthetic fiber is used for polishing the surface of a workpiece or for polishing and grinding it for burring, and used under severe conditions such as being brought into contact with the surface of the workpiece while being rotated at high speed, or being subjected to a strong pressing force, a burring effect or a polishing effect cannot be expected when a hard burr is formed on the surface or corner of the workpiece, and there is a need for improvement.
The present invention has been achieved to solve the above described problem, and has as an object to provide a brush material having wear resistance and durability so that a burring effect or a polishing effect can be expected even when a hard burr is formed on the surface or corner of a workpiece in the case where the brush material is used for polishing the surface of the workpiece or for polishing and grinding it for burring, and used under severe conditions such as being brought into contact with the surface of the workpiece while being rotated at high speed, or being subjected to a strong pressing force.
SUMMARY OF THE INVENTIONIn order to achieve the object, the invention according to claim 1 provides a brush material including: a resin brush bristle material that is composed of a bundle of plural resin brush bristles each containing a coarse-grained abrasive and having a circular or polygonal section; and a covering layer that contains a powdered abrasive and is provided on a surface of the resin brush bristle material.
In the second aspect of the invention that includes the brush material of the first aspect, the covering layer has a resin coated thereon, a resin coat wound thereon in a spiral shape or a pipe member of thin resin film mounted thereon.
In the third aspect of the invention that includes the brush material of the first or second aspect, the coarse-grained abrasive has a grain size of F50 to F100, and the powdered abrasive has a grain size of #2,500 to #8,000.
According to the brush material of the present invention, the brush bristle material includes the covering layer provided on the surface of the resin brush bristle material that is composed of a bundle of plural brush bristles. Thus, the brush material has wear resistance and durability, and the burring effect or polishing effect can be expected even when a hard burr is formed on the surface or corner of a workpiece in the case where the brush material is used under severe conditions such as being brought into contact with the surface of the workpiece while being rotated at high speed, or being subjected to a strong pressing force.
Now, embodiments of the present invention will be described with reference to the drawings. In the drawings, like reference numerals denote like components.
In
In
In
In
In
The covering layer 14 is formed of a resin coat containing as the powdered abrasive 13 at least one member selected from the group consisting of alumina, silicon carbide, cerium oxide and diamond. When the resin coat contains plural members as the powdered abrasive 13, it contains 1 to 10% by weight of diamond and 90 to 99% by weight of other members.
The covering layer 14 may contain aromatic powder or deodorant powder together with the powdered abrasive 13. The aromatic powder or deodorant powder contained together with the powdered abrasive can give an aromatic property or a deodorant property to the brush bristle material 12a during polishing of a workpiece.
The resin brush bristles 12, 22 and 32 are linear members. Instead, a twisted resin brush bristle 22c as shown in
When two or more resin brush bristles 12, 22 or 32 are bound to form a brush bristle material, the plurality of resin brush bristles 12 having various line shapes may be bound as they are to form a brush bristle material, or a plurality of (three in
The covering layer 14 can be formed by coating resin, but a covering layer 14a may be formed by winding a resin coat in a spiral shape as shown in
The present invention is not limited to the embodiments described above, but may be implemented in any manner without changing the configuration described in appended claims. For example, three or four resin brush bristles are provided inside the covering layer in Embodiments 1 to 5, but other plural number of resin brush bristles may be provided.
Claims
1. A brush material comprising:
- a resin brush bristle material that is composed of a bundle of plural resin brush bristles each containing a coarse-grained abrasive and having a circular or polygonal section; and
- a covering layer that contains a powdered abrasive and is provided on a surface of the resin brush bristle material.
2. The brush material according to claim 1, wherein the covering layer has a resin coated thereon, a resin coat wound thereon in a spiral shape or a pipe member of thin resin film mounted thereon.
3. The brush material according to claim 1 or 2, wherein the coarse-grained abrasive has a grain size of F50 to F100, and the powdered abrasive has a grain size of #2,500 to #8,000.
Type: Application
Filed: Oct 17, 2007
Publication Date: Apr 23, 2009
Applicants: (Chigasaki-shi), (Chigasaki-shi)
Inventors: Yuuichiro Niizaki (Chigasaki-shi), Tomoko Niizaki (Chigasaki-shi), Yunito Niizaki (Chigasaki-shi)
Application Number: 11/873,890
International Classification: A46D 1/00 (20060101);