JPH034353B2 - - 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 materials such as metal, resin, wood, or concrete. Figures 11 to 13 show a polishing wheel 1 described in a previous application filed by the present applicant as Japanese Patent Application No. 59-275596 in order to improve this type of conventional polishing wheel. , consists of a rotating body 2 as a base made of a suitable material, and a plurality of parallelogram-shaped abrasive coated paper pieces 3 cut to approximately the same dimension as the axial width dimension of the rotary body 2, and the abrasive coated paper pieces 3 are , the rotating body 2
A portion thereof is stacked on the outer circumferential surface 4 of the rotating body 2 by a predetermined distance, and is attached at a predetermined angle with respect to the axial direction of the rotating body 2. Then, the polishing surface 5 of the coated polishing paper piece 3 attached to the outer peripheral surface 4 of the rotating body 2 was brought into contact with the surface of the workpiece to be polished.

Problems to be Solved by the Invention According to the polishing wheel 1 of the above-mentioned prior application, the rotating body 2
The outer circumferential surface 4 of the rotating body 2 has an arcuate shape, whereas the long side 6 of the abrasive cloth paper piece 3 is a straight line. When pasted, the linear long side 6 of the abrasive paper piece 3
Since each abrasive cloth piece 3 tries to return to a straight line due to elastic restoring force, it bulges in the outer circumferential direction and the abrasive surface 5 becomes parallel to the axis of the rotating body 2. There was a problem that it didn't work.

Means for Solving the Problems The present invention has been proposed in view of the above problems, and includes a plurality of polishing cloths each having a substantially quadrilateral or rectangular strip shape on the outer peripheral surface 13 of the rotating body 11. The polishing wheel is made by pasting paper pieces 12 and 18 so that their long sides are partially overlapped and inclined with respect to the axis of the rotating body 11, and the above-mentioned abrasive cloth paper piece 1
The long sides 14 and 21 of 2 and 18 are cut into concave circular arcs 15 and 22 with respect to the rotating direction of the rotating body 11, and are pasted on the outer circumferential surface 13 of the rotating body 11.

Effects In the present invention, since the long side of the abrasive cloth paper piece is cut into a concave circular arc with respect to the rotating direction of the rotating body, the abrasive cloth paper piece can be attached to the outer circumferential surface of the rotary body without curving the abrasive cloth paper piece. Therefore, no elastic restoring force is generated in the abrasive coated paper pieces, and it is possible to prevent bulges from occurring on the abrasive surface.

Embodiments Hereinafter, embodiments of the polishing wheel 10 according to the present invention will be described with reference to FIGS. 1 to 3. In the drawings, reference numeral 11 denotes a base rotating body made of a suitable material, and reference numeral 12 denotes a plurality of approximately quadrilateral-shaped abrasive coated paper pieces cut to approximately the same dimension as the axial width dimension of the rotary body 11. 12, the rotating body 1
1 by a predetermined dimension, and are attached in a tongue shape at an angle with respect to the axis of the rotating body 11. The long side 14 of the abrasive cloth paper piece 12 is cut into a concave arc 15 having a predetermined curvature with respect to the rotating direction of the rotating body 11, so that the abrasive cloth paper piece 1
2 can be attached to the outer circumferential surface 13 of the rotating body 11 without curving it into an arc shape. The curvature of the concave arc 15 of the coated abrasive paper piece 12 is determined by the diameter of the rotating body 11 and the coated abrasive paper piece 1.
2, and the rotating body 11 of the abrasive cloth paper piece 12.
It is determined by three elements of the inclined plane with respect to the axis of .

According to the polishing wheel 10, the coated abrasive paper piece 12 has its long side 14 formed into a concave arc 15 and is attached to the outer peripheral surface 13 of the rotating body 11 without being curved. No elastic restoring force occurs. Therefore, the coated abrasive paper piece 12 is always held along the outer circumferential surface 13 of the rotating body 11, and no bulge is generated on the abrasive surface 16, and the abrasive surface 1
6 can always be kept parallel to the axis of the rotating body 11.

4 to 6 show a second embodiment of the polishing wheel. The polishing wheel 17 of this embodiment consists of a rotating body 11 and a plurality of coated abrasive paper pieces 18 cut into approximately rectangular shapes.
8 are stacked on the outer circumferential surface 13 of the rotating body 11 by a predetermined distance, and are attached in the form of tongues at an angle with respect to the axis of the rotating body 11.
Both end edges 20a, 20b of the abrasive cloth piece 18 protruding from the end surfaces 19a, 19b of the rotating body 11
It is folded back and adhesively fixed to both end surfaces 19a and 19b of the. The long side 21 of the abrasive cloth paper piece 18
is cut into a concave arc 22 having a predetermined curvature with respect to the rotational direction of the rotating body 11 as in the first embodiment, so that bulges do not occur in the polished surface 23 as in the first embodiment. do not have.

7 to 10 show a third embodiment of the polishing wheel. The polishing wheel 24 of this embodiment is characterized by having the abrasive cloth paper piece 18 cut into a substantially rectangular shape on the outer circumferential surface 13 of the rotary body 11, and the abrasive cloth paper piece 18 cut into a substantially rectangular width having the same width as the width in the axial direction of the rotary body 11. The four sides 12 of the quadrilateral-shaped polishing cloth are alternately layered by shifting each other by a predetermined dimension, and are attached at an angle with respect to the axis of the rotating body 11, and approximately rectangular pieces protruding from the end surfaces 19a, 19b of the rotating body 11 are formed. The end edges 20a and 20b of the shaped abrasive paper piece 18 are connected to the rotating body 11.
It is folded back and adhesively fixed to the end surfaces 19a and 19b of the.

Incidentally, the substantially quadrilateral-shaped coated abrasive paper piece 12 of the abrasive wheel 24 is cut so as to be suitable for being attached to the outer circumferential surface 13 of the rotating body 11 in a planarly expanded state. However, since the coated abrasive paper pieces 12 are three-dimensionally attached to the arcuate outer circumferential surface 13 of the rotating body 11 in an inclined state with respect to the axis of the rotary body 11, for geometric reasons, the coated abrasive paper pieces 12 One end edge 25a of the end face 1 of the rotating body 11
The other edge portion 25b extends inward from the end surface 19b of the rotating body 11. This protrusion of the edge portion 25a of the coated abrasive paper piece 12 to the outside and the intrusion of the edge portion 25b to the inside of the polishing wheel 24 disturbs the left-right balance in the width direction of the polishing wheel 24.
Alternatively, the corner portion 2 of a substantially rectangular abrasive cloth piece 18
This causes the bulge of 6a. Therefore, among the two types of coated abrasive paper pieces 12 and 18, the diameter of the rotating body 11 from the edge 25a of the coated abrasive paper piece 12 having a substantially quadrilateral shape, the inclination angle of the coated abrasive paper piece 12 with respect to the axis of the rotary body 11, and the polishing The protruding portion 27 from the end surface 19a of the rotating body 11, which is geometrically determined by three elements of the circumferential width dimension of the cloth paper piece 12, is cut and removed, and the edge portion 25b of the abrasive cloth paper piece 12 is removed.
Then, an intrusion portion 28 geometrically determined by the above three elements is extended.

Then, when the object to be polished is polished using the polishing wheel 24, one end edge 25a of the approximately quadrilateral shaped abrasive cloth paper piece 12 is attached to the end surface 1 of the rotating body 11.
Since it is held on the same plane as the end surface 19a without protruding outward from 9a, one corner 26a of the substantially rectangular coated abrasive paper piece 18 is fixed due to the presence of the substantially quadrilateral coated abrasive paper piece 18. It doesn't get too thick. Therefore, bulges do not occur near the corner portions 26a of the coated abrasive paper pieces 18, and the polished surfaces 28 of the coated abrasive paper pieces 12, 18 can always be kept parallel to the axis of the rotating body 11. In addition, the intrusion portion 28 of the other end edge 25b of the substantially quadrilateral shaped abrasive cloth piece 12 intrudes inward, and the rotating body 1
It is held on the same plane as the end surface 19b of 1. Therefore, both end edges 25a of the abrasive coated paper piece 12,
25b is held on the same plane as the end surfaces 19a, 19b of the rotary body 11, so that the left and right balance in the width direction of the polishing wheel 24 is not disturbed, and the polishing wheel 24 can be rotated to its true position without being rotated on one side. Rotate while drawing a circle.

In addition, according to each of the above embodiments, the polishing wheel
Since the polished surfaces 16, 23, and 28 of 10, 17, and 24 are formed on steps by layered abrasive cloth paper pieces 12 and 18, a large spatial resistance occurs when the rotating body 11 rotates, and the polished surfaces 16, 23 , 28, and this cooling air hits the polished surface of the object to be polished, whose temperature has increased due to grinding and polishing, and removes heat from the object to be polished. Therefore, the heat dissipation effect of the object to be polished is extremely good, and when grinding and polishing objects to be polished such as stainless steel, the object to be polished will not be distorted by heat and the surface can be finished beautifully. can.

Further, in each of the above embodiments, the abrasive cloth paper pieces 12, 18
is attached to the outer circumferential surface 13 of the rotating body 11 at an angle with respect to the axis, so that the object to be polished can be continuously ground and polished. Moreover, the abrasive paper pieces 12, 18
Since the polishing wheel can be wide in the circumferential direction, the life of the polishing wheel can be extended.

Effects of the Invention According to the polishing wheel according to the present invention, bulges do not occur on the polished surface. Therefore, the surface to be polished can always be kept parallel to the axis of the rotating body, and the surface to be polished of the object to be polished can be polished smoothly. In addition, since the polishing surface is formed in stages using multiple coated polishing papers, cooling air is generated on the polishing surface, which has an extremely good heat dissipation effect on the object to be polished. No distortion occurs. Furthermore, if the abrasive cloth surface is wide in the circumferential direction, the life of the abrasive wheel can be extended.

[Brief explanation of the drawing]

1 to 3 show a first embodiment of the polishing wheel according to the present invention, FIG. 1 is an explanatory view showing the state in which the abrasive cloth pieces are attached, and FIG. 2 is a front view of the polishing wheel. , Figure 3 is a side view, Figures 4 to 6
The figure shows a second embodiment of the polishing wheel.
Fig. 4 is a front view, Fig. 5 is a side view, Fig. 6 is an explanatory diagram showing the state in which the abrasive cloth pieces are attached, and Figs. 7 to 10 show a third embodiment of the abrasive wheel. , Fig. 7 is a front view, Fig. 8 is a partially omitted side view,
FIG. 9 is an explanatory diagram showing how the abrasive cloth pieces are attached;
FIG. 10 is an explanatory diagram of a substantially quadrilateral shaped abrasive cloth piece. Figures 11 to 13 show the configuration of the polishing wheel proposed in the specification and drawings of the applicant's earlier application, in which Figure 11 is a front view, Figure 12 is a side view, and Figure 13 is a polishing wheel. It is an explanatory view showing a state of attachment of cloth pieces. 11...Rotating body, 12, 18...Abrasive cloth paper piece, 13
...outer peripheral surface, 14, 21...long side, 15, 22...concave arc.

Claims (1)

[Claims] 1. An abrasive wheel comprising a plurality of substantially strip-shaped abrasive coated paper pieces attached to the outer circumferential surface of a rotating body, with their long sides partially overlapping and inclined with respect to the axis of the rotating body, A polishing wheel characterized in that the long side of the abrasive cloth paper piece is cut into a concave arc with respect to the rotating direction of the rotary body and is pasted on the outer peripheral surface of the rotary body.