Rotary-Type Polishing Device Having Protrusion Members

Abstract

Disclosed herein is a rotary-type polishing device having protrusion members. The rotary-type polishing device includes a rotary shaft, a disc-type body, an elastic rubber, and a plurality of protrusion members. The disc-type body is coupled with the rotary shaft and is configured to integrally rotate together with the rotary shaft. Furthermore, the disc-type body has a concavely curved outer surface, which is formed on the underside of the outer circumferential surface thereof. The elastic rubber, having a predetermined thickness, is attached to the outer surface and conforms to the shape of the outer surface. The protrusion members are attached to or partially embedded in the rubber.

1 . A rotary-type polishing device having protrusion members, comprising:
 a rotary shaft;   a disc-type body coupled with the rotary shaft and configured to integrally rotate together with the rotary shaft, the disc-type body having a concavely curved outer surface, which is formed on an underside of an outer circumferential surface thereof;   an elastic rubber, having a predetermined thickness, attached to the outer surface to conform to a shape of the outer surface; and   a plurality of protrusion members attached to or partially embedded in the rubber.   
   
   
       2 . The rotary-type polishing device as set forth in  claim 1 , wherein the protrusion members are attached to an outer circumferential surface of the elastic rubber, which is attached to the concavely curved outer surface, via a net-shaped member. 
   
   
       3 . The rotary-type polishing device as set forth in  claim 2 , wherein:
 the net-shaped member has a shape of an iron net; and   first ends of the protrusion members are attached and bonded to the surface of the elastic rubber;   wherein the net-shaped member enables additional fastening of the protrusion members in such a way that the protrusion members are inserted into through-holes of the net-shaped member.   
   
   
       4 . The rotary-type polishing device as set forth in  claim 3 , wherein the protrusion members are one type of protrusion selected from among a polygonal or cylindrical protrusion, a tapered polygonal or tapered cylindrical protrusion, which has a shape that is tapered from a surface thereof that is attached to the elastic rubber to a distal portion thereof, a T-shaped polygonal or T-shaped cylindrical protrusion, which has a shape that is similar to the tapered polygonal or tapered cylindrical protrusion and in which an end thereof that is attached to the elastic rubber, is formed to be relatively wide, and a spherical protrusion. 
   
   
       5 . The rotary-type polishing device as set forth in  claim 3 , wherein the protrusion members are a combination of a polygonal or cylindrical protrusion, a tapered polygonal or tapered cylindrical protrusion, which has a shape that is tapered from a surface thereof that is attached to the elastic rubber to a distal portion thereof, a T-shaped polygonal or T-shaped cylindrical protrusion, which has a shape that is similar to the tapered polygonal or tapered cylindrical protrusion and in which an end thereof that is attached to the elastic rubber is formed to be relatively wide, and a spherical protrusion, and are attached to the surface of the elastic rubber via the net-shaped member. 
   
   
       6 . The rotary-type polishing device as set forth in  claim 4 , wherein the elastic rubber is formed together with protrusion members, in which diamonds are contained, in a double injection manner. 
   
   
       7 . The rotary-type polishing device as set forth in  claim 5 , wherein the elastic rubber is formed together with protrusion members, in which diamonds are contained, in a double injection manner.