JPS649146B2 - - 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. Since it contacts the surface to be polished perpendicularly, it is difficult to completely prevent scratches on the workpiece. Furthermore, since the base material such as the cloth or paper of the coated abrasive paper 10 contacts the workpiece, it is difficult to completely prevent the workpiece from being scratched. There was a problem that the polishability was not very good.

Means for solving the problem: A polishing wheel is placed on a cylindrical rotating body, a band plate spirally wound around the outer circumferential surface of the rotating body, and stacked on the surface of the band plate, shifted by a predetermined dimension. Both ends of the coated abrasive paper are wrapped around the back surface of the band-shaped plate.

Function: The object to be polished comes into contact with only the abrasive grain surface of the coated abrasive paper disposed on the outer peripheral surface of the rotating body, and both ends of the coated abrasive paper are prevented from peeling off from the strip plate.

Embodiment FIGS. 1 and 2 show a polishing wheel 20 according to the present invention, and this polishing wheel 20
A rotating body 22 having a cylindrical shape and having shaft portions 21 at both ends, a band plate 23 spirally wound around the outer peripheral surface of the rotating body 22, and a rectangular plate disposed on the surface of the band plate 23. It consists of a large number of coated abrasive paper pieces 24. The coated abrasive paper piece 24 is made by fixing abrasive grains to a base material such as cloth or paper with an adhesive, and the coated abrasive paper piece 24 is attached to the strip plate 23 in the following manner. That is, as shown in FIG. 3, a large number of rectangular abrasive cloth pieces 24, which are longer than the width l of the long strip plate 23, are shifted by a predetermined dimension and are tilted at a predetermined angle with respect to the strip plate 23. At the same time, the surface 23a of the strip plate 23 of each coated abrasive paper piece 24 is layered on the surface 23a of the strip plate 23.
3a and a part of the layered part are adhesively fixed, and each abrasive paper piece 24 is attached to the surface 23 of the strip plate 23.
Glue and fix to a. When the adhesive fixation of the coated abrasive paper piece 24 to the surface 23a of the strip plate 23 is completed in this way, both ends 24a, 24a of the coated abrasive paper piece 24 protruding from both ends of the strip plate 23 are As shown in the figure and FIG. 5, the back surface 23b of the strip plate 23
Attachment of the coated abrasive paper piece 24 to the band-shaped plate 23 is completed by winding the abrasive paper piece 24 into the band-shaped plate 23 and adhesively fixing both ends 24a, 24a to the back surface 23b of the band-shaped plate 23. Thereafter, the strip plate 23 to which the coated abrasive paper piece 24 is attached is spirally wound around the outer peripheral surface of the rotating body 22, as described above.

When winding both ends 24a, 24a of the coated abrasive paper piece 24 onto the back surface 23b of the strip plate 23, if both edges on the front side of the strip plate 23 are chamfered as shown in FIG. , it is possible to prevent the part from expanding outward. Also, both ends 2 of the abrasive cloth piece 24
When 4a and 24a are wrapped around the back surface 23b of the strip plate 23, the central part of the back surface 23b of the strip plate 23 becomes depressed and becomes weak in strength, so if necessary, as shown in FIG. A spacer 25 may be provided. Furthermore, when winding the strip plate 23 spirally around the outer peripheral surface of the rotating body 22, as shown in FIG. 1, the strip plate 23 is wound with a predetermined gap,
A spiral discharge groove 26 for discharging polishing powder may be formed on the outer peripheral surface of the rotating body 22.

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 coated polishing paper pieces 24 are distributed along the outer circumferential surface of the rotating body 22 via the strip plate 23 as described above. Since it is provided, only the abrasive grain surface 24b of the coated abrasive paper piece 24 comes into continuous contact with the object to be polished, and grinding and polishing is performed without the base material such as cloth or paper coming into contact with the object to be polished. Further, both ends 24a, 24a of the abrasive cloth piece 24 are wrapped around the back surface 23b of the strip plate 23, as described above, and the abrasive cloth piece 24 is arranged in an inclined state with respect to the axial direction of the rotating body 22. Since the contact portion of each coated abrasive paper piece 24 with the object to be polished moves continuously from one end of each coated abrasive paper piece 24 toward the other end, the grinding and polishing work is performed. At this time, the force acting on the abrasive cloth piece 24 causes the abrasive cloth paper piece 2 to
4 will not peel off from the rotating body 22. Further, the polishing powder generated by grinding and polishing the object to be polished is removed after collecting in the discharge groove 26 formed between the band-shaped members 23.

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 back side of the strip plate, the abrasive paper piece will not be separated 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 be separated from the rotating body. Lifespan can be significantly extended. Further, even long objects to be polished can be simply and easily ground and polished, and workability can be greatly improved.

[Brief explanation of the drawing]

FIG. 1 is a front view of a polishing wheel according to the present invention;
Figure 2 is an enlarged sectional view taken along the line of Figure 1;
4 and 4 are explanatory diagrams for explaining the attachment state of the abrasive cloth pieces, and FIG. 5 is a sectional view taken along the line of FIG. 4. 6 to 11 are drawings showing conventional examples of polishing wheels. 20... Polishing wheel, 22... Rotating body, 23
...Strip plate, 23a...Surface of band plate, 23b...
...Back side of the strip plate, 24...Abrasive cloth paper piece, 24a...
...the edge of the abrasive paper strip.

Claims (1)

[Claims] 1 Consists of a cylindrical rotating body, a strip plate spirally wound around the outer circumferential surface of the rotating body, and abrasive cloth paper pieces arranged on the surface of the band plate in a staggered manner by a predetermined distance, and the above-mentioned abrasive cloth A polishing wheel characterized in that both ends of a piece of paper are wrapped around the back side of the band-shaped plate.