JPH091466A - Cup type brush - Google Patents

Abstract

PURPOSE: To prevent a brush bristle from bending outward because of high speed rotation or from falling down outward because of pressing onto a workpiece. CONSTITUTION: A plurality of ring-shaped brush materials 4, in each of which multiple brush bristles 5 are planted, are arranged concentrically on the surface of a disk-shaped base 2, and brush bristles 5' in the brush material 4' positioned on the outermost circumference side are harder than the brush bristles 5 in the brush material 4 inside.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cup type brush mainly used for removing burrs generated on the surface of metal works and other objects.

[0002]

2. Description of the Related Art As a deburring cup type brush, for example, there is one described in Japanese Utility Model Publication No. 52-47834. The brush is provided with a support shaft at the center of a disk-shaped base, and a plurality of ring-shaped brush materials on one surface,
The configuration is concentrically provided. The cup type brush has a support shaft attached to a polishing device and rotated at a high speed so that the front surface of the brush material faces the surface of the work to remove burrs generated on the surface of the work.

[0003]

Therefore, when the cup-type brush is rotated at a high speed, the brush bristles of the brush material located on the outermost peripheral side spread outward due to the action of centrifugal force.
The pressing force against the work does not work and the deburring function cannot be achieved. This phenomenon becomes more remarkable as the rotating speed of the brush is increased and as the pressing force against the work is increased for the purpose of enhancing the deburring ability, and in extreme cases, it cannot be used for deburring. In addition, recently, in order to reduce the running cost and to reduce the brush replacement work, there is a tendency to lengthen the brush bristles of the brush material. It is difficult to work. In order to eliminate such drawbacks, a protective plate made of a metal plate for preventing expansion is attached to the base end portion of the outermost peripheral side of the brush material, or the bristles of the outermost peripheral side brush material are coated with resin or the like. It is made hard to prevent it from spreading outward due to centrifugal force. However, even if the brush bristles are prevented from spreading by such a method, in the case of a protective plate, when the brush bristles are worn out, they come into contact with the work and cause serious damage, and in the case of resin coating, the work is It is melted by the frictional heat of 1) and adheres to the surface of the work, and defective products occur one after another. Therefore,
There is a need for a cup-shaped brush that is extremely simple and does not damage the work piece even if the bristles are worn so that the bristles do not spread outward.

[0004]

DISCLOSURE OF THE INVENTION The present invention has been proposed in view of the above-mentioned drawbacks of the prior art and in order to meet the demands of the prior art. Innumerable brush bristles are planted on the surface of a disk-shaped base. Concentric ring-shaped brush material is installed,
The brush bristles of the brush material located on the outermost peripheral side are characterized by being harder than the brush bristles of the brush material inside thereof, and a plurality of brush materials are constituted by innumerable brush bristles provided on the channel fittings. Provided is a cup-shaped brush in which the channel fitting is ring-shaped.

[0005]

According to the above-described structure of the present invention, since the bristles of the brush material located on the outermost peripheral side of the disk-shaped base are harder than the bristles of the brush material located inside thereof, Even if the brush bristles of the inner brush material try to fall outward due to the centrifugal force, the outermost brush material can be prevented from collapsing and spread can be prevented. Moreover,
Since the brush bristles of the brush material on the outermost peripheral side are themselves hard, they do not fall or curve outward even when a centrifugal force is applied.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments shown in the drawings. The cup-shaped brush 1 of the present invention has a structure in which a shaft 3 is attached to the center of a disk-shaped base 2 and a plurality of ring-shaped brush materials 4 are concentrically provided on one surface of the base 2. .

Each of the brush materials 4 is made up of innumerable brush bristles 5.
The central part of the length is housed inside the channel fitting 6 and held by the metal core wire 7.
It itself is shaped like a ring. In the embodiment shown in the drawings, four ring-shaped brush materials 4 are provided on the surface of the base 2, but the number of brush materials 4 can be freely designed depending on the deburring function and size of the work. .

In the plurality of brush materials 4, the innumerable brush bristles 5'of the brush material 4'located on the outermost peripheral side of the base 2 are harder than the brush bristles 5 of the brush material 4 located inside thereof. Is. For example, if the brush bristles 5 ′ of the brush material 4 ′ on the outermost peripheral side are molded from polypropylene or another synthetic resin, the brush bristles 5 of the other brush material 4 on the inner side of the brush bristles 5 ′ are softer than the brush bristles. Resin bristles, natural vegetable or animal bristles may be used. Also, for example, if the brush bristles 5'of the outermost brush material 4'are made of a natural plant material,
As the bristles of the inner brush material, it is possible to use softer animal bristles.

As described above, the tip of the brush material located on the outermost peripheral side is made harder than that of the brush material inside the brush material so that the tip of the work material is warped outward during deburring work. It does not fall into a curved shape, and even when a certain pressing force is applied to the work, each bristles does not spread to the outside.

Although the present invention has been described above based on the embodiments of the drawings, the present invention is not limited to the above-mentioned embodiments, and may be modified in any manner as long as the structure described in the claims is not changed. It can be carried out.

[0011]

In summary, according to the present invention, a plurality of ring-shaped brush materials, in which numerous brush bristles are planted, are concentrically provided on the surface of a disk-shaped base, and the brush material located on the outermost peripheral side is provided. It is characterized in that the brush bristles are harder than the brush bristles of the inner brush material. Therefore, even if the brush is attached to the polishing device and rotated at high speed,
The bristles do not expand outward or warp to the outside from the tip, and the bristles do not warp even if the brush bristles are pressed against the work, so the work is reliably deburred. It can be surface polished. Even if the brush bristles gradually wear, the brush bristles of the outermost brush material are only harder than the other bristles on the inner side, so that the work may be damaged during the deburring work. Can be used until almost worn,
Not only can the running cost be reduced by lengthening the brush bristles, but also the work of replacing the brush with the polishing device can be significantly reduced, which is of high practical value.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional front view showing an embodiment of the present invention.

FIG. 2 is a perspective view with a part in section.

[Explanation of symbols]

 1 cup type brush 2 base 3 axis 4, 4'brush material 5, 5'bristles 6 channel metal fitting 7 metal core wire

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[Procedure amendment]

[Submission date] July 19, 1995

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Change

[Correction contents]

[0011]

In summary, according to the present invention, a plurality of ring-shaped brush materials, in which numerous brush bristles are planted, are concentrically provided on the surface of a disk-shaped base, and the brush material located on the outermost peripheral side is provided. It is characterized in that the brush bristles are harder than the brush bristles of the inner brush material. Therefore, even if the brush is attached to the polishing device and rotated at high speed,
The bristles do not expand outward or warp to the outside from the tip, and the bristles do not warp even if the brush bristles are pressed against the work, so the work is reliably deburred. It can be surface polished. Further, even if the brush bristles gradually wear, the brush bristles of the outermost side of the brush material, there only is harder than the other bristles of the inner
Since it wears almost evenly, it does not damage the work in the middle of deburring work and can be used until it almost wears out, and it is possible to lengthen the brush bristles and reduce the running cost. Therefore, it is possible to remarkably reduce the work of exchanging the brush with respect to the polishing apparatus, which has high practical value.

Claims (2)

[Claims] 1. A plurality of ring-shaped brush materials in which numerous brush bristles are planted are concentrically provided on the surface of a disk-shaped base, and the brush bristles of the brush material located on the outermost peripheral side are provided inside thereof. A cup-shaped brush that is harder than the bristles of other brush materials. 2. The cup-type brush according to claim 1, wherein the plurality of brush materials are configured by providing innumerable bristles on the channel fitting, and the channel fitting is ring-shaped.