KR20100010461A - Polishing wheel - Google Patents

Abstract

PURPOSE: A polishing wheel is provided to increase durability by protecting a rotating plate when shock is transferred by protruded objects in a floor. CONSTITUTION: A polishing wheel is composed of a rotating plate(20) and multiple segments. The rotating plate is composed of a round plate(21) of a ring-shape and a protruded sill(23). The round plate has multiple combining holes(25). The protruded sill is protruded from the inner surface of the round plate toward center. The segment comprises a connection part, upper and lower extended parts. The upper and lower extended parts are protruded from the upper surface and the lower surface of the connection part toward outside.

Description

Polishing wheel. {Polishing wheel}

The present invention relates to a polishing wheel, especially when the surface of the epoxy, urethane, concrete, etc. when the abrasive wears out such as the PCD can be easily replaced to improve the work efficiency, impact by the protrusions protruding on the floor In this case, the present invention relates to a polishing wheel that absorbs an impact from a support pin or segment that is a consumable, protects a rotating plate that is durable, and increases durability.

In general, there are various types of polishing wheels mounted on the polishing machine, but the polishing wheels used when flattening the floor or polishing and removing floors such as epoxy and urethane may form a disc shape.

Conventional polishing wheels are attached to the surface of the urethane, concrete, etc. by attaching an abrasive, such as PCD that plays a role of polishing to rotate the polishing wheel at a high speed so that the surface of the urethane, concrete, etc. by the polishing wheel.

These abrasive wheels allow the segments to be replaced as necessary to replace the abrasives worn by use. In other words, by forming a coupling hole in the rotating plate and by forming a protruding coupling portion at the bottom of the segment was used by inserting the protrusion coupling portion and the coupling hole by forcing the fitting method.

However, in this method, the protrusion direction of the protrusion coupling portion and the direction in which the grinding wheel rotates are perpendicular to each other, and the segment by the interference fit is more strongly fitted by the rotational centrifugal force, which makes it difficult to separate the segment from the rotating plate. There is this. In other words, when polishing the rough floor according to the work site, the segments must be frequently exchanged, but the segment according to the prior art has a problem in that it takes a lot of time required for the replacement, thereby reducing work efficiency.

Therefore, the present invention was devised to solve the above problems, and an object of the present invention can be easily replaced when the abrasive such as PCD is worn during the surface work is improved work efficiency, protruding to the floor When the impact is applied by the projected protrusions to provide a polishing wheel that increases durability by protecting the rotating plate is durable.

This object is achieved by the present invention, according to one aspect of the present invention, the grinding wheel is a ring (Ring) shape is formed in a predetermined width and the disk is formed with a plurality of coupling holes penetrating up and down, and the center of the disc Rotating plate consisting of a protrusion jaw formed to protrude to a predetermined length on the inner surface facing toward the "b" shape; Connection portion constituting an arc of a predetermined length, the upper extension portion formed integrally to protrude a predetermined length toward the outside from the upper side of the connecting portion, and the lower extension integrally formed to protrude a predetermined length toward the outside from the lower side of the connection portion It is characterized by consisting of a plurality of segments consisting of a section forming a "c" shape.

And the lower surface of the rotating plate is formed with a circular projection is further formed, the upper surface of the lower extension portion of the segment is further formed a groove corresponding to the projection, the projection is seated in the groove is coupled It features.

In addition, a pipe-shaped support pin is additionally mounted on an upper surface of the protruding jaw, and a support groove having a predetermined length cut to the side is further formed on the upper extension portion of the segment, and the support pin is formed on the support groove. It is characterized by being coupled to the inner seating on the side.

In the present invention, the support pin is a pipe shape cut in the longitudinal direction and the upper end is extended to form a head, the coupling hole is a shape in which the circular and the long hole is in communication, the long hole is characterized in that the jaw is formed.

According to the configuration as described above of the present invention, even when the abrasive material such as PCD wears a rough bottom surface, such as concrete, can be easily replaced because the work efficiency is improved, the impact by the protrusion projecting on the floor In this case, since the shock is absorbed by the support pins or the segments of the consumables, the rotating plate, which is a durable material, is protected, thereby increasing the durability of the polishing wheel.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, and like reference numerals designate like parts throughout the drawings.

1 and 2 are a perspective view and an exploded perspective view of the abrasive wheel according to an embodiment of the present invention, Figure 3 is a cross-sectional view taken along the line A-A 'of FIG.

As shown in the figure, the polishing wheel according to the present invention, which is indicated by reference numeral 10, consists of a rotating plate 20, a segment 30 and the like.

The rotating plate 20 is composed of a disc 21 and a projection jaw 23 as shown in Figs. The disc 21 is circular as a plate having a constant width and thickness, and the protruding jaw 23 is formed so that a predetermined length is drawn toward the center from the lower surface of the disc 21 so that the disc 21 and the stepped jaw are formed. It is formed integrally to form a.

In addition, a coupling hole 25 is formed in the disc 21 at a predetermined interval. The coupling hole 25 is formed to penetrate up and down in a shape in which a circular hole and a long hole are communicated with each other, as shown in FIG. 6A. The jaw 26 is formed at the site.

In addition, the support pin 29 is seated on the upper surface of the protruding jaw 23, the support pin 29 is a pipe shape cut in the longitudinal direction, as shown in Figure 7, the upper end is expanded to the head portion To form. In addition, as shown in the enlarged view of the main portion of Figure 3, the lower surface of the rotating plate 20 is a shape in which a circular projection 22 is formed.

The segment 30 shown in FIGS. 2 and 4 has a connection portion 31 forming an arc of a predetermined length, and an upper extension portion 33 formed to protrude a predetermined length toward the outside from the upper side of the connection portion 31. And a lower extension part 35 formed to protrude a predetermined length toward the outside from the lower side of the connection part 31, wherein the connection part 31, the upper extension part 33, and the lower extension part 35 are formed. ) Is composed of a single cross-section of the "c" shape.

As shown in FIG. 4, the lower extension part 35 protrudes longer than the upper extension part 33, and an arc-shaped groove 37 is formed on the upper surface near the edge of the lower extension part 35. ) Is formed to be coupled to the protrusion 22 of the rotating plate 20. (See Fig. 5)

In addition, a pair of support grooves 39 are formed at the outer edges of the upper extension part 33, as shown in FIG. 4, the support grooves 39 are formed by cutting a predetermined length to the side, and FIG. 1. As shown in, the support pin (39) is to be seated on the side.

The bottom surface of the segment 30 is equipped with a polycrystalline diamond (PCD) to grind the bottom surface. The polycrystalline diamond (PCD) is made of a sintered body of diamond particles having the highest hardness. The polycrystalline diamond (PCD) mounted on the segment 30 may be mounted in various shapes, and thus the drawings are not shown.

The polishing wheel 10 according to the present invention is detachably attached to the driving unit of the polishing machine, and is simply detached as the coupling bolt 50 is seated in the coupling hole 25. 6A and 6B, the coupling bolt 50 is inserted into the circular portion of the coupling hole 25 by inserting the head portion of the coupling bolt 50 in a state in which the coupling bolt 50 is fastened to the driving unit. Rotate) so that the coupling bolt 50 is located in the long hole. As such, when the coupling bolt 50 is seated in the long hole, the head of the coupling bolt 50 is coupled to the jaw 26 while being positioned.

Another embodiment of the present invention is shown in FIGS. 8A and 8B.

As shown in the drawings, another embodiment is additionally mounted on the support plate 200, the support plate 200 is a shape in which two discs of different sizes having a predetermined thickness are integrally formed, and the countersunk bolt ( 300 is inserted into the bolt hole 210 to be fastened.

Thus, as shown in Figure 8b, the small disc formed on the support plate 200 is located on the side of the segment (30). If the segment 30 is broken during operation, it is supported by the small disc of the support plate 200, thereby preventing the broken segment 30 from scattering to the outside.

What has been described above is only one embodiment for carrying out the polishing wheel according to the present invention, the present invention is not limited to the above embodiment without departing from the gist of the present invention as claimed in the following claims Anyone with ordinary knowledge in the field of the present invention will have the technical idea of the present invention to the extent that various modifications can be made.

1 is a perspective view of a polishing wheel according to an embodiment of the present invention.

Figure 2 is an exploded perspective view of the polishing wheel shown in FIG.

3 is a partially cut-out and enlarged view of the rotating plate.

4 is a perspective view of a segment;

5 is a cross-sectional view taken along the line A-A 'of FIG.

6a and 6b are views for explaining the coupling hole and the coupling bolt.

7 is a view for explaining a support pin.

8A and 8B are perspective and cross-sectional views of a polishing wheel according to another embodiment.

Explanation of symbols on the main parts of the drawings

10: polishing wheel, 20: rotating plate,

21: disc, 22: projection,

23: protruding jaw, 25: coupling hole,

29: support pin, 30: segment,

31: connection portion, 33: upper extension portion,

35: lower extension, 37: groove,

39: support groove, 50: coupling bolt

Claims (5)

Is formed in a ring (Ring) shape having a predetermined width and is formed to protrude in a predetermined length on the inner surface facing the center of the disk 21 and a plurality of coupling holes 25 are formed in a plurality of Rotating plate 20 consisting of a projection jaw 23 to form a "b" shaped cross section; Connection portion 31 forming a circular arc of a predetermined length, the upper extension portion 33 is formed integrally to protrude a predetermined length toward the outside from the upper side of the connecting portion 31, the outer side from the lower side of the connecting portion 31 Polishing wheel, characterized in that consisting of; a plurality of segments (30) consisting of a lower extension portion 35 is formed integrally to protrude a predetermined length toward the cross-section "C" shape. The lower surface of the rotating plate 20 is further formed with a circular protrusion 22, the upper surface of the lower extension portion 35 of the segment 30, the projection 22 Groove (37) corresponding to the additionally formed, so that the projection (22) is seated in the groove (37), characterized in that the grinding wheel. According to claim 1, The support plate 29 of the pipe shape is further mounted to the upper surface of the protruding jaw 23 of the rotating plate 20, the upper extension portion 33 of the segment 30 Polishing wheel, characterized in that the support groove (39) is formed to be cut to a side length is further formed, the support pin (29) is seated on the inner side from the side of the support groove (39). 3. The polishing wheel according to claim 2, wherein the support pin (29) has a pipe shape cut in the longitudinal direction and an upper end thereof is extended to form a head. 4. The polishing wheel according to any one of claims 1 to 3, wherein the coupling hole has a shape in which a circular hole and a long hole are in communication with each other, and a jaw is formed in the long hole.

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