JPH085020Y2 - Polishing tool - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polishing tool in which a wheel substrate is adhered and fixed to the back surface of an abrasive made of abrasive cloth.

[0002]

2. Description of the Related Art A conventional polishing tool in which a wheel substrate and an abrasive are combined is, for example, an actual flat blade 1-114.
No. 273 is disclosed.

In this polishing tool, a large number of pieces of abrasive cloth paper having abrasive grains adhered to the surface of a sheet material are radially arranged on a disk-shaped base (wheel substrate), and the base is mounted on the base. It is constituted by adhering and fixing it while making a right angle or an inclination with respect to it.

The polishing tool having such a structure can be attached to the rotary shaft of the hand grinder, rotated, and pressed against the polishing surface of the workpiece to perform the polishing operation.

In such a polishing tool, the abrasive cloth paper piece is pressed against the work piece during polishing and thus falls in the direction of rotation thereof, but since it has a restoring force, it is located at the corner portion of the work piece. In this case, the abrasive cloth just before passing is strongly pressed against the corner portion by the restoring force.

For this reason, the corners of the work piece are strongly polished and the corners are blunted.

Further, even when the bead of welding is ground, the abrasive cloth paper is pressed against the non-welded portion due to the restoring force acting on the abrasive cloth paper piece as described above, and the non-welded portion is ground. There was also.

Further, since the fine abrasive powder and the abrasive particles separated from the abrasive cloth paper piece accompanying the polishing enter between the succeeding abrasive cloth paper piece and the workpiece, there is no escape, so that the abrasive cloth paper piece is not clogged. Occurs and the polishing efficiency is significantly reduced.

Further, since pieces of abrasive cloth paper cut into a predetermined size are arranged radially and fixed by adhesion to each abrasive cloth paper, there is a problem that it takes a lot of time and labor, productivity is lowered and cost is increased.

Therefore, the present invention can suppress the sagging of the corners of the workpiece and can polish along the boundary between the polished portion and the non-polished portion, and is excellent in polishing efficiency and mass productivity. A polishing tool is provided.

[0011]

In order to solve the above-mentioned problems, this invention is formed by laminating a plurality of ring-shaped abrasive cloth papers having a through hole at the center and having a polygonal outer peripheral edge and adhering them to each other. A wheel substrate having a through hole at the center was adhered and fixed to the back surface of the above-mentioned polishing material to form a polishing tool.

Further, according to this invention, a plurality of abrasive cloth papers having a ring shape having a through hole at the center and having a large number of radial cuts so as to leave a connecting portion at the inner peripheral edge portion are laminated and adhered to each other. A wheel substrate having a through hole at the center was adhered and fixed to the back surface of the formed abrasive material to form an abrasive tool.

[0013]

When the polishing tool is attached to the rotary shaft of the hand grinder and rotated, and the polishing material on the surface of the polishing tool is pressed against the workpiece to perform polishing or grinding, the corners of the outer peripheral edge of the polishing cloth paper are Can be used for efficient polishing or grinding, and the fine abrasive powder or abrasive particles that have been separated from the abrasive during polishing fit into the gaps between the cuts, and the centrifugal force generated by the rotation of the polishing tool then removes them from the cuts. Scatter from the edge to the outside.

When the polishing cloth paper on the surface of the polishing material is worn away while the polishing is in progress, the polishing cloth paper of the next layer is exposed.

[0015]

Embodiments of the present invention will be described with reference to the accompanying drawings.

A ring-shaped abrasive cloth paper 1 having a through hole 6 in the center and a polygonal outer peripheral edge as shown in FIG.
As shown in FIG. 3, a plurality of layers are laminated and adhered to each other to form the abrasive 2.

3 and 4 show the first embodiment.

In the first embodiment, as shown in FIG. 3, the wheel substrate 4 is fixed to the back surface of the abrasive 2 with the adhesive 3 to form the abrasive tool.

4 and 5 show another embodiment.

In the second embodiment shown in FIG. 4, the polishing cloth 1 is laminated with a slight shift in the rotational direction.

In the third embodiment shown in FIG. 5, a large number of radial cuts 1 are formed so as to leave the connecting portion 12 at the inner peripheral edge portion.
1 is provided on the abrasive 2 of FIG. 2, and on the back surface of the abrasive 2,
The wheel substrate 4 was fixed with the adhesive 3 to form a polishing tool.

In the third embodiment, first, a plurality of abrasive cloth papers are laminated and adhered to each other to form an abrasive material, and then a plurality of cuts are provided in the abrasive material.
A plurality of cuts may be made on each of a plurality of abrasive cloths first, and the cuts may be laminated so that the cuts are aligned, and the abrasives may be adhered to each other to form an abrasive material. It is also possible to laminate a plurality of the above and adhere them to each other, and punch out the abrasive so that the notches are also formed at the same time.

Further, in the above-mentioned embodiment, as shown in FIG. 3, the outer peripheral edge portion of the abrasive material protrudes from the peripheral edge of the wheel substrate, but it is not necessary.

The wheel substrate 4 has a through hole 5 at its center.

[0025]

[Effect] The polishing tool according to the present invention can perform efficient polishing or grinding by utilizing the corners of the outer peripheral edge of the polishing cloth paper, and by its constitution, polishing fine powder or polishing particles separated from the polishing cloth paper piece. Is inserted into the cut provided in the abrasive, and is discharged from the outer end of the cut toward the outer peripheral direction of the abrasive from the inside of the cut by the centrifugal force generated by the rotation of the polishing tool. Prevents clogging and significantly improves polishing efficiency.

Further, since this polishing tool is provided with the polishing material formed by laminating a plurality of ring-shaped polishing cloth papers and adhering them to each other, the polishing cloth paper pieces are not required unlike the conventional polishing tools. Therefore, it is possible to suppress the above-mentioned inconvenience such as the corner sag of the object to be processed, the problem of sticking out the boundary between the polished portion and the non-polished portion, and the occurrence of chattering.

Further, since this polishing tool is provided with an abrasive material in which the ring-shaped polishing cloth paper is laminated, the polishing cloth paper of the next layer is exposed even if the polishing cloth paper of the surface layer is worn away.
The polishing power can be maintained for a long time.

In this polishing tool, the entire surface of the polishing cloth paper on the surface layer of the polishing material is brought into contact with the object to be polished, so that the characteristics of the polishing cloth paper are maximized.

Further, since this polishing tool is provided with the above-mentioned polishing material, it is not necessary to radially arrange a plurality of polishing cloth paper pieces on the substrate and to fix the polishing cloth paper pieces to each other as in the conventional case. It is suitable for mass production and contributes to cost reduction.

Further, when a polygonal abrasive cloth paper is used, the yield is better than that of a round shape when punching from one large abrasive cloth paper.

[Brief description of drawings]

FIG. 1 is a perspective view showing an abrasive cloth paper of the present invention.

FIG. 2 is a perspective view of an abrasive formed using the same as above.

FIG. 3 is a vertical cross-sectional front view in which the same abrasive material as above is adhered and fixed to a wheel substrate.

FIG. 4 is a perspective view showing an abrasive according to a second embodiment.

FIG. 5 is a perspective view showing a polishing tool according to a third embodiment.

[Explanation of symbols]

 1 Abrasive cloth paper 2 Abrasive material 3 Adhesive 4 Wheel substrate 5 Through hole 6 Through hole 11 Notch

Claims (2)

[Scope of utility model registration request] 1. A wheel substrate having a through hole in the center is formed on the back surface of an abrasive formed by laminating a plurality of polishing cloth papers having a polygonal outer peripheral edge and having a through hole in the center and adhering them to each other. Polishing tool with adhesive fixing. 2. A ring-shaped having a through hole at the center, having a large number of radial cuts so as to leave a connecting portion at the inner peripheral edge and to laminate a plurality of polygonal abrasive cloth papers at the outer peripheral edge. Then, a polishing tool in which a wheel substrate having a through hole at the center is adhered and fixed to the back surface of an abrasive formed by adhering each other.