JP3030539B2 - Cup type brush - Google Patents

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 a metal work or another object.

[0002]

2. Description of the Related Art As a cup-type brush for deburring, 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,
It is a configuration provided concentrically. In the cup-type brush, a support shaft is attached to a polishing apparatus and rotated at a high speed so that the front surface of the brush material faces the surface of the work, thereby removing 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 on the work does not work, and the deburring function cannot be performed. This phenomenon becomes more remarkable as the rotational speed of the brush is increased and the pressing force on the work is increased in order to enhance the deburring ability. In an extreme case, the deburring cannot be used. In addition, recently, in order to reduce running costs and reduce brush replacement work, there is a tendency to increase the length of the bristles of the brush material. Difficult to work. In order to eliminate such defects, attach a protective plate made of a metal plate to the base end portion of the outermost side of the brush material for preventing expansion, or coat the bristles of the outermost side brush material with resin or the like. It is made hard to prevent it from spreading outward due to centrifugal force. However, even if the bristles are prevented from spreading by such a method, in the case of a protective plate, if the bristles become worn, they will come into contact with the work and cause significant damage, and in the case of resin coating, the work will not be possible. Melts and adheres to the surface of the work due to the frictional heat, resulting in a series of defective products. Therefore,
There is a demand for a cup-shaped brush which is extremely simple means and which does not damage the work even if the brush bristles are worn, so that the brush bristles do not spread outward.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned drawbacks, and has been proposed in order to meet the demands of the related art. In the present invention, countless brush bristles are planted on the surface of a disk-shaped base. A plurality of ring-shaped brush materials are concentrically provided,
The bristles of the outermost brush material are harder than the bristles of the inner brush material, and the bristles of the outermost brush material may fall or curve outward due to the centrifugal force of rotation. Instead, the outermost brush material is retained even if the bristles of the inner brush material tend to fall outward due to the centrifugal force of rotation.

[0005]

According to the configuration of the present invention described above, the brush bristles of the brush material located on the outermost peripheral side of the disk-shaped base are harder than the brush bristles of the brush material located inside the disk base. Even if the bristles of the inner brush material tend to fall outward due to the centrifugal force, the outermost brush material can be prevented from falling and spread can be prevented. Moreover,
Since the bristles of the outermost brush material are hard themselves, they do not fall outward or bend even when centrifugal force acts.

[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-type brush 1 of the present invention has a configuration 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 provided concentrically on one surface of the base 2. .

[0007] Each of the brush materials 4 is composed of countless brush bristles 5.
Is arranged such that the central portion of the length is accommodated inside the channel fitting 6 and held by the metal core wire 7.
It 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 the brush materials 4 can be freely designed according to the work deburring function and dimensions. .

[0008] 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. It is. For example, if the brush bristles 5 'of the outermost brush material 4' are formed of polypropylene or another synthetic resin, the brush bristles 5 of the other brush material 4 inside the bristles 5 'are made of synthetic material softer than the brush bristles. Resin brush hair, natural vegetable or animal brush hair may be used. Also, for example, if the brush bristles 5 'of the outermost brush material 4' are made of a natural vegetable material,
The brush bristles of the inner brush material may be softer animal bristles. By selecting the brush bristles of the outermost brush material and the bristles of the inner brush material as described above, when the work is ground with the cup-type brush of the present invention, the outermost circumferential surface is centrifugally generated by rotation. The brush bristles of the brush material do not fall or curve outward, and even if the brush bristles of the brush material inside fall toward the outside, the brush material on the outermost peripheral side holds the brush bristles.

As described above, the bristles of the brush material located on the outermost peripheral side are made harder than the bristles of the inner brush material so that the tip warps outward during deburring work. It does not fall down in a curved shape, and even if a certain pressing force is applied to the work, each brush bristle does not spread outward.

As described above, the present invention has been described based on the embodiments in the drawings. However, the present invention is not limited to the above-described embodiments, and may be any method unless the structure described in the claims is changed. Can be implemented.

In summary, the present invention is directed to a brush-like brush material located on the outermost peripheral side, wherein a plurality of ring-shaped brush materials in which countless brush bristles are planted are provided concentrically on the surface of a disk-shaped base. The bristles are harder than the bristles of the inner brush material, and the bristles of the outermost brush material do not fall or curve outward due to the centrifugal force of rotation, and the bristles of the inner brush material. Is characterized in that the outermost brush material is held even if the brush material falls down due to the centrifugal force of rotation. Therefore, even when the brush is attached to the polishing device and rotated at a high speed, the brush bristles on the outermost peripheral side do not expand outward due to centrifugal force, and do not warp greatly from the tip, and the brush bristles on the inside also do not move outward The brush bristles do not expand or warp, and even when the brush bristles are pressed against the work, the brush bristles do not fall out or warp, so that the work can be efficiently polished and deburred on the entire surface of the brush. . Also, even if the brush bristles wear gradually, the brush bristles of the outermost brush material are harder than the inner brush bristles and wear almost uniformly,
There is no need to damage the work during the deburring work or monitor the abrasion state of the brush bristles during the work, so it can be used until it is almost worn, and the running cost is reduced by using the brush bristles without waste And the replacement work of the brush with the polishing apparatus is reduced, so that the practical value is high.

[Brief description of the drawings]

FIG. 1 is a front view, partially in section, showing an embodiment of the present invention.

FIG. 2 is a perspective view partially in section.

[Explanation of symbols]

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

Claims (2)

(57) [Claims] 1. A plurality of ring-shaped brush materials in which countless brush hairs are planted are provided concentrically on the surface of a disk-shaped base, and the brush bristles of the brush material located on the outermost peripheral side are provided on the inner side. Harder than the bristles of the brush material
The brush bristles of the side brush material fall outward due to the centrifugal force of rotation
The brush of the brush material inside does not
Even if the bristle tries to fall outward due to the centrifugal force of rotation, the outermost circumference
A cup-shaped brush characterized in that the brush material is held by the brush. 2. The cup-type brush according to claim 1, wherein the plurality of brush materials are configured such that countless brush bristles are provided on a channel fitting, and the channel fitting is ring-shaped.