JPS60114469A - Grinding wheel - Google Patents

Abstract

PURPOSE:To improve the grinding/polishing performance and to protect the polishing face from flaw by adhering polishing clothes onto the outercircumferential face of rotary member while shifting by predetermined length and applying said clothes while overlapping along the outercircumference of rotary member. CONSTITUTION:When grinding/polishing an object by means of a polishing wheel 21, only the abrasive grain face section 25a of polishing cloth 25 will contact continuously against the object and the basic material such as cloth or paper will never contact against the object because the polishing cloth 25 is adhered along the outercircumferential face 24 of rotary member 23, thereby the object is never scratched to improve the polishing/grinding performance considerably. During grinding/polishing, the polishing cloth 25 is heated through friction but since each cloth 25 is overlapped with specific angle, a small gap is formed between the polishing clothes 25 to flow air thus to cool the polishing cloth 25 resulting in improvement of polishing performance.

Description

DETAILED DESCRIPTION OF THE INVENTION 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.

B. Prior Art A polishing wheel is generally used to polish the surface of a workpiece (object to be polished) made of materials such as metal, resin, wood, or concrete. Figures 1 and 2FgJ show this type of conventional polishing wheel (1), in which a plurality of polishing cloths of a predetermined size are attached to the outer peripheral surface (3) of a disc-shaped rotating member (2). (1) Paper (4) is planted and fixed in a radial manner. Then, by rotating the rotating member (2) in a predetermined direction and utilizing the centrifugal force, the surface to be polished of the workpiece is struck with the abrasive surface (5) of the coated abrasive paper (4) to perform grinding and polishing. . However, this has the drawback that 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 very poor grinding and polishing properties.

Therefore, in order to eliminate the above-mentioned drawbacks, a polishing wheel (6) as shown in FIGS. 3 and 4 was provided. That is,
This polishing wheel (6) is constructed by stacking and fixing a large number of coated abrasive papers (8) of a predetermined size on the outer peripheral surface of a disc-shaped rotating member (7) in the circumferential direction. However, this polishing wheel (
6), the coated abrasive paper (8) is in continuous contact with the surface to be polished of the workpiece, so the grinding performance is improved compared to the above conventional example, but the coated abrasive paper (8) is Since it contacts the surface perpendicularly, there is a problem in that the workpiece is scratched. However, although (2) also improves the abrasiveness, it cannot be expected to significantly improve the abrasiveness because the base material, such as the cloth or paper of the coated abrasive paper, also comes into contact with the object to be polished. Therefore, as an improvement, a polishing wheel (9) as shown in FIGS. 5 to 7 was provided. This polishing wheel (9) is made by shifting the vr polishing paper (10) slightly diagonally with respect to the circumferential direction, and then rotating the rotating member (11).
) is planted and fixed on the outer circumferential surface of the However, this is not perfect, and there is a problem in that the base material such as cloth or paper of the coated abrasive paper (10) comes into contact with the object to be polished, so that the grinding performance is not so good.

OBJECTS OF THE INVENTION An object of the present invention is to provide a polishing wheel that has extremely good grinding properties for objects to be polished and is free from any risk of scratching the objects.

C0 Structure of the Invention The present invention provides abrasive paper (25) (28) (29) or (
42) are shifted by a predetermined dimension and fixed with adhesive, and the polishing cloth (
3) While overlapping the paper (25) (2B) (29) or (42), rotate the rotating member (23) (36) (40).
It is aligned with the outer peripheral surface of.

2. Examples 8 to 11 show embodiments of the present invention.

In the same figure, (21) is a polishing wheel according to the present invention, and this polishing wheel (21) has a mounting hole (22) of a rotating shaft.
) A large number of parallelogram-shaped coated abrasive papers (25) in which abrasive grains are fixed with adhesive to a base material such as cloth or paper are placed in the circumferential direction on the outer peripheral surface (24) of a rotating member (23) having a The base ends (26) formed on the oblique sides of the 'gF coated abrasive papers (25) are adhesively fixed to the outer circumferential surface (24), and each of the abrasive coated papers (25) While overlapping the outer peripheral surface (
24). At this time, each coated abrasive paper (2
5) is because the base end (26) formed on the oblique side is adhered in an arc shape along the outer peripheral surface (24) of the rotating member (23), and the coated abrasive paper (25) is layered. , the coated abrasive paper (25) has an outer peripheral surface (24) of the rotating member (23).
), and the abrasive paper (23) does not stand up. In addition, if a suitable thin cloth is adhered to the outer circumferential surface (24) of the rotating member (23) and the abrasive cloth paper (25) is adhered to the rotating member (23) through this thin cloth, its adhesion will be further improved. improves.

Then, when the object to be polished is ground and polished using the polishing wheel (21), the coated abrasive paper (25) is adhesively fixed along the outer peripheral surface (24) of the rotating member (23) as described above. Therefore, the abrasive surface portion (25) of the coated abrasive paper (25)
Since only a) is in continuous contact with the object to be polished, and the base material such as cloth or paper is not in contact with the object to be polished, the grindability is greatly improved. During grinding and polishing of the object to be polished, the 'gf coated abrasive paper (25) generates heat due to friction, but since each coated abrasive paper (25) is MM-shaped at a predetermined angle, the coated abrasive paper (25) A slight gap is formed between them, and air flows through this gap to cool the coated abrasive paper (25).

Note that the shape of the tip of the coated abrasive paper is not limited to the shape of the tip (27), (5), and the like of the coated abrasive paper (25) shown in the above embodiment, but as shown in FIGS.
The tips (30) (31) of the coated abrasive paper (2B) (29) shown in the figure vary depending on the shape of the polished surface of the object to be polished.
) may be changed as appropriate.

Figure 14 shows a polishing wheel (32) of another embodiment of the present invention.
This polishing wheel (32) is constructed by adhering an annular elastic member (35) made of rubber or the like to the outer peripheral surface of a wheel body (34) having a mounting hole (33) for the rotating shaft. 36), and the elastic member (35)
A coated abrasive paper (25) is adhesively fixed to the outer circumferential surface (37) in the same manner as in the previous embodiment. The presence of the elastic member (35) improves the ability of the polishing wheel (32) to follow the object to be polished during grinding and polishing operations. In addition, the elastic member (35), the wheel body (34) and fff
A thin cloth may be placed between the polishing paper (35) and the polishing paper (35) in order to improve the adhesion of each member.

FIGS. 15 to 17 show a polishing wheel (38) according to another embodiment of the present invention.

This polishing wheel (38) has shaft parts (39) (6
) A band-shaped abrasive paper (42) is spirally wound around the outer peripheral surface (41) of a cylindrical or columnar rotating member (40) having (39) and fixed by adhesive. The above abrasive cloth paper (42)
is coated with adhesive on one side edge (43) along its longitudinal direction, and when it is wound around the rotating member (40), the side edge (43) is coated with adhesive.
43) is pressed against the outer peripheral surface (41) and fixed with adhesive. In this embodiment, the rotating member (40) and the abrasive paper (42)
) The elastic member may be left open between the two parts, or a thin cloth may be used to improve the adhesion of each member, as in the previous embodiment.

E1 Effect of the invention According to the present invention, during grinding and polishing of the object to be polished, only the abrasive grain surface of the coated abrasive paper comes into contact with 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. Therefore, the grinding and polishing properties are greatly improved and extremely good compared to the conventional method, and there is no risk of scratching the object to be polished.

[Brief explanation of the drawing]

Fig. 1 shows a front view of the first conventional example of the polishing wheel7), Fig. 2 shows its right side view, Fig. 3 shows a front view of the second conventional example, and Fig. 4 shows the right side. Cross-sectional view, Figure 5 is the 3rd
Figure 6 is a front view showing a conventional example, Figure 6 is its right side view, Figure 7 is
The figure is a developed view showing the state in which the coated abrasive paper is attached. Fig. 8 is a front view of the polishing wheel according to the present invention, Fig. 9 is a right side view thereof, Fig. 10 is a developed front view showing the attached state of the abrasive paper, and Figs. 11(a) and (b) are An explanatory diagram showing the shape of the coated abrasive paper, FIGS. 12 and 13 are explanatory diagrams showing other embodiments of the coated abrasive paper, and FIG. 14 shows another embodiment of the abrasive wheel according to the present invention. 15 is a perspective explanatory view showing still another embodiment of the polishing wheel, FIG. 16 is an explanatory view of the coated abrasive paper, and FIG. 17 is an enlarged explanatory view of the main part thereof. (21) (32) (38) - Polishing wheel, (23
) (36) (40) One rotation member, (25) (28)
(29)＼To443 悌10lro, Lr, tja-Lr 21(, -Z, f”
r! +, I// l/ Figure 14 1■-K□i-i Cape-r-■-----1□□□μm (
Hino (6-) z 4L, 1 Procedural amendment dated December 27, 1980 1. Indication of case 1982 Patent Application No. 217525 2. Title of invention Polishing wheel, 5 3. Case of the person making the amendment Relationship with Patent Applicant Name Maruichi Koki Co., Ltd. 46 Agent 8550 Address 1-15-26 Edobori, Nishi-ku, Osaka-shi, Osaka Prefecture Osaka Commercial Evil Building Name (6458) Patent Attorney Shogo Ehara (and 1 others)
Name) 5. Subject of amendment ``■'' in the specification, page 6, lines 4 to 5, may be changed as appropriate. Moreover, the rotating member (23)
The outer peripheral surface (24) of is not limited to a flat shape,
It may be formed into a concave surface having an arc-shaped cross section or a convex surface having a mountain-shaped cross section. Figure 14 is corrected as ``. (2)

Claims (1)

[Claims] (]) A polishing wheel characterized in that coated abrasive paper is adhered and fixed to the outer circumferential surface of a rotating member by shifting it by a predetermined dimension, and the coated abrasive paper is layered and aligned with the outer circumferential surface of the rotating member.