JPS649147B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a polishing wheel used for polishing the surface of a workpiece (object to be polished) made of metal, resin, wood, concrete, or the like.

BACKGROUND OF THE INVENTION Generally, a polishing wheel is used to polish the surface of a workpiece (object to be polished) made of metal, resin, wood, concrete, or the like. FIGS. 6 and 7 show a conventional polishing wheel 1 of this type, in which a strip-shaped abrasive coated paper of a predetermined size is attached to the outer peripheral surface 3 of a disc-shaped rotating body 2. 4 are planted and fixed in a radial manner. Then, the rotating body 2 is rotated in a predetermined direction, and the abrasive surface 5 of the coated abrasive paper 4 is used to strike the surface of the work to be polished, thereby grinding and polishing the workpiece. However, with this method, the contact time between the surface of the workpiece to be polished and the coated abrasive paper 4 is extremely short, and no significant friction occurs between the two, resulting in a problem that the grinding and polishing properties are very poor.

Therefore, in order to solve the above-mentioned drawbacks, a polishing wheel 6 as shown in FIGS. 8 and 9 was provided.
That is, this polishing wheel 6 is constructed by mounting and fixing a large number of coated abrasive papers 8 of a predetermined size on the outer peripheral surface of a rotating body 7 in the circumferential direction. However, with this polishing wheel 6, the coated abrasive paper 8 comes into continuous contact with the surface to be polished of the workpiece, and although the grinding performance is improved compared to the conventional example, the coated abrasive paper 8 does not contact the surface of the workpiece to be polished. There was a problem that the workpiece was scratched because it contacted the surface perpendicularly. Moreover, although the grinding and polishing properties are improved, since the base material such as the cloth or paper of the coated abrasive paper also comes into contact with the object to be polished, a significant improvement in the grinding and polishing properties cannot be expected.

Therefore, as an improvement over the second conventional example, a polishing wheel 9 as shown in FIGS. 10 and 11 was provided. This polishing wheel 9 is installed on the rotating body 1 by shifting the coated polishing paper 10 in a slightly diagonal direction with respect to the circumferential direction.
It is planted and fixed on the outer peripheral surface of 1.

Problems to be Solved by the Invention Although the abrasive wheel 9 is attached to the outer peripheral surface of the rotating body 11 with the abrasive coated paper 10 slightly shifted in a diagonal direction with respect to the circumferential direction, the abrasive coated paper 10 is attached to the outer peripheral surface of the rotating body 11. It is difficult to completely prevent scratches on the workpiece because it contacts the surface to be polished vertically.
Moreover, since the base material such as cloth or paper of the coated abrasive paper 10 comes into contact with the workpiece, there is a problem that the grinding properties are not so good.

Means for solving the problem: A polishing wheel is press-fitted into a cylindrical rotating body, abrasive cloth paper pieces arranged in layers on the outer circumferential surface of the rotating body, shifted by a predetermined dimension, and openings at both ends of the rotating body. and a disc-shaped rotary plate, with both ends of the abrasive paper piece wound around the inner circumferential surface of the rotary body, and both wound ends wrapped around the inner circumferential surface of the rotary body. and the outer peripheral surface of the rotary plate.

Function: Only the abrasive grain surface of the abrasive cloth paper piece placed on the outer peripheral surface of the rotating body comes into contact with the object to be polished, and both ends of the abrasive cloth paper piece are prevented from peeling off from the rotary body.

Embodiment FIGS. 1 to 4 show a polishing wheel 20 according to the present invention, and this polishing wheel 20
, a cylindrical rotating body 21 and a large number of rectangular abrasive paper pieces 22 arranged on the outer peripheral surface of the rotating body 21.
It has a disc shape that is press-fitted into the openings at both ends of the cylindrical rotating body 21, and has a mounting hole 24 for the rotating shaft in the center.
It consists of a rotary plate 23 having a. The coated abrasive paper piece 22 is made by fixing abrasive grains to a base material such as cloth or paper with an adhesive.
The attachment to the rotating body 21 is performed as follows.
That is, as shown in FIG.
The rotating body 21 is shifted by a predetermined dimension and is tilted at a predetermined angle with respect to the axial direction of the rotating body 21.
At the same time, the portion of each coated abrasive paper piece 22 that contacts the outer circumferential surface 21a of the rotating body 21 and a part of the layered portion are sequentially adhesively fixed to connect each coated abrasive paper piece 22. By this,
A piece of abrasive paper 22 is wrapped around the outer peripheral surface of the rotating body 21. In this way, the abrasive paper piece 22 is attached to the rotating body 2.
When wrapped around the outer circumferential surface 21a of the rotating body 21,
Both ends 22 of the abrasive cloth paper piece 22 protruding from both ends of
a, 22a are wound around the inner circumferential surface 21b of the rotating body 21, as shown in FIG.
22a is adhesively fixed to the inner peripheral surface 21b of the rotating body 21. After that, by press-fitting the rotating plate 23 into the openings at both ends of the rotating body 21, the inner peripheral surface 21b of the rotating body 21 and the outer peripheral surface 23a of the rotating plate 23 form both ends 22a, 22a of the abrasive cloth piece 22. This completes the attachment of the coated abrasive paper piece 22 to the rotating body 21.

Incidentally, when winding both ends 22a, 22a of the abrasive paper piece 22 onto the inner circumferential surface 21b of the rotating body 21, if the openings at both ends of the outer circumferential surface of the rotating body 21 are chamfered as shown in FIG. When inserted, this part can be prevented from bulging outward. Also, both ends 2 of the abrasive paper piece 22
When 2a and 22a are wound around the inner circumferential surface 21b of the rotating body 21, the center part of the inner circumferential surface 21b of the rotating body 21 becomes depressed and becomes weak in strength. As shown, spacer 2 is attached to the relevant part.
5 should be intervened.

In the above configuration, when the object to be polished is ground and polished using the polishing wheel 20 according to the present invention, the abrasive cloth paper pieces 22 are attached to the outer circumferential surface of the rotating body 21 as described above.
1a, only the abrasive grain surface 22b of the abrasive coated paper piece 22 continuously contacts the object to be polished, and the base material such as cloth or paper does not come into contact with the object to be polished. will be held. Also, abrasive paper piece 22
As described above, both ends 22a, 22a of the rotating body 2
Further, the coated abrasive paper pieces 22 are arranged in an inclined state with respect to the axial direction of the rotating body 21, and the contact portion of each coated abrasive paper 22 with the object to be polished is moves continuously from one end of each coated abrasive paper piece 22 toward the other end, so during grinding and polishing work, the coated abrasive paper piece 22 is It will not peel off from the rotating body 21.

Effects of the Invention As described above, according to the present invention, during grinding and polishing of the object to be polished, only the abrasive grain surface of the abrasive paper piece comes into contact with the object to be polished, and the base material such as cloth or paper comes into contact with the object to be polished. Since there is no contact, the grinding performance is greatly improved compared to the conventional method, and there is no risk of scratching the object to be polished. In addition, since both ends of the abrasive paper piece are wrapped around the inner circumferential surface of the rotating body, the abrasive paper piece will not be peeled off from the rotating body due to the force acting on the abrasive paper piece during grinding and polishing work, and the abrasive paper piece will not peel off from the rotary body. The life of the wheel can be significantly extended.

[Brief explanation of drawings]

FIG. 1 is a front view of a polishing wheel according to the present invention;
Fig. 2 is a side view, Fig. 3 is a sectional view taken along the line - Fig. 2, Fig. 4 is a sectional view taken along the line - Fig. 1;
FIG. 5 is an explanatory diagram for explaining how the abrasive cloth pieces are attached. 6 to 11 are drawings showing conventional examples of polishing wheels. 20... Polishing wheel, 21... Rotating body, 21
a...Outer circumferential surface of the rotating body, 21b...Inner circumferential surface of the rotating body, 22...Abrasive coated paper piece, 22a...End of the abrasive coated paper piece, 23...Rotating plate, 23a...Outer circumferential surface of the rotating plate .

Claims (1)

[Claims] 1 Consists of a cylindrical rotating body, abrasive paper pieces arranged in layers on the outer circumferential surface of the rotating body, shifted by a predetermined dimension, and a disc-shaped rotating plate press-fitted into openings at both ends of the rotating body, Both ends of the abrasive paper piece are wound around the inner circumferential surface of the rotating body, and the wound ends are sandwiched between the inner circumferential surface of the rotating body and the outer circumferential surface of the rotating plate. Features a polishing wheel.