U.S. patent application number 12/049137 was filed with the patent office on 2009-02-12 for rotary-type polishing device having protrusion members.
This patent application is currently assigned to Bong Won Cho. Invention is credited to Bong Won CHO, Hyung Chul Cho, Chun Seok Park.
Application Number | 20090042495 12/049137 |
Document ID | / |
Family ID | 40346991 |
Filed Date | 2009-02-12 |
United States Patent
Application |
20090042495 |
Kind Code |
A1 |
CHO; Bong Won ; et
al. |
February 12, 2009 |
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.
Inventors: |
CHO; Bong Won; (Seoul,
KR) ; Cho; Hyung Chul; (Inchon, KR) ; Park;
Chun Seok; (Chungcheongnam-do, KR) |
Correspondence
Address: |
GREENLEE WINNER AND SULLIVAN P C
4875 PEARL EAST CIRCLE, SUITE 200
BOULDER
CO
80301
US
|
Assignee: |
Cho; Bong Won
Seoul
KR
|
Family ID: |
40346991 |
Appl. No.: |
12/049137 |
Filed: |
March 14, 2008 |
Current U.S.
Class: |
451/461 ;
451/548 |
Current CPC
Class: |
B24D 7/18 20130101; B24D
11/001 20130101 |
Class at
Publication: |
451/461 ;
451/548 |
International
Class: |
B24B 11/08 20060101
B24B011/08 |
Foreign Application Data
Date |
Code |
Application Number |
Aug 9, 2007 |
KR |
10-2007-0080060 |
Claims
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.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention relates generally to a rotary-type
polishing device having protrusion members and, more particularly,
to a rotary-type polishing device having protrusion members, which
polishes the edge of a material, such as stone, through a rounding
process.
[0003] 2. Description of the Related Art
[0004] A prior art rotary-type polishing device is shown in FIGS. 1
and 2. Referring to FIGS. 1 and 2, the rotary-type polishing device
includes a rotary shaft 1, which is rotated by a rotational means,
and a disc-type body 2, which is coupled with the rotary shaft 1
and is configured to integrally rotate together with the rotary
shaft 1, and which is made of hard material. A concavely curved
outer surface 2a is formed on the underside of the outer
circumferential surface of the disc-type body 2 to enable holding
of and contact with the curved, round surface 12 of target material
11 to be processed. A hard abrasive stone 3, having a predetermined
thickness, is attached to the outer surface 2a and conforms to the
shape of the outer surface 2a.
[0005] The rotary-type polishing device, which is constructed as
described above, polishes the round surface 12 of the target
material 11 to be smooth when the abrasive stone 3 is brought into
contact with the target material 11 along the round surface 12. The
abrasive stone 3 functions as abrasive material in which diamonds
are contained.
[0006] However, in the prior art rotary-type polishing device,
which is constructed as described above, when the round surface 12
of the target material 11 to be processed is located so as to be
brought into contact with the abrasive surface 3a of the abrasive
stone 3 and then the rotary shaft 1 is rotated by applying power to
the rotational means, the abrasive stone 3 polishes the round
surface 12 of the target material 11 while continuously rotating
along the round surface 12 of the target material 11. In the case
where polishing work is performed through the repeated contact of
the abrasive stone 3, a problem occurs in that the polishing effect
is remarkably lowered in portions of the round surface of the
uneven target material that does not come into contact with the
abrasive stone 3, because the abrasive stone 3 does not have any
elasticity.
SUMMARY OF THE INVENTION
[0007] Accordingly, the present invention has been made keeping in
mind the above problems occurring in the prior art, and the present
invention is directed to provide a rotary-type polishing device
having protrusion members, in which polishing protrusion members,
which contain diamonds, are attached to or partially embedded in a
polishing rubber via a net-shaped member, in which a plurality of
grid holes is formed to pass therethrough, thus maintaining
constant contact between the polishing protrusion members and the
target material thanks to the elasticity of the rubber.
[0008] The present invention provides a rotary-type polishing
device having protrusion members, including: 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
the underside of the outer circumferential surface thereof; an
elastic rubber, having a predetermined thickness, attached to the
outer surface to conform to the shape of the outer surface; and a
plurality of protrusion members attached to or partially embedded
in the rubber.
BRIEF DESCRIPTION OF THE DRAWINGS
[0009] The above and other objects, features and advantages of the
present invention will be more clearly understood from the
following detailed description taken in conjunction with the
accompanying drawings, in which:
[0010] FIG. 1 is a perspective view showing a prior art rotary-type
polishing device;
[0011] FIG. 2 is a sectional view showing the prior art rotary-type
polishing device;
[0012] FIG. 3 is a sectional view showing a rotary-type polishing
device according to a first embodiment of the present invention;
and
[0013] FIG. 4 is an enlarged view of a principal portion showing a
rotary-type polishing device according to a second embodiment of
the present invention.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0014] Embodiments of the present invention are described in detail
with reference to the accompanying drawings below.
[0015] FIG. 3 is a sectional view showing a rotary-type polishing
device according to a first embodiment of the present invention.
The first embodiment of the present invention is described in
conjunction with FIG. 3, and descriptions of the repeated reference
characters, described in FIGS. 1 and 2, are omitted.
[0016] Referring to FIG. 3, the rotary-type polishing device having
protrusion members according to the present embodiment includes a
rotary shaft 1, and a disc-type body 2, which is coupled with the
rotary shaft 1 and is configured to integrally rotate together with
the rotary shaft 1, and which is made of hard material.
[0017] An elastic rubber member 25, having a predetermined
thickness, is attached to the outer surface 2a of the disc-type
body 2. A plurality of protrusion members 30 is attached to the
rubber member 25.
[0018] The concavely curved outer surface 2a is formed under the
outer circumferential surface of the disc-type body 2 to enable
holding of and contact with the convexly curved surface of the
target material to be processed.
[0019] The elastic rubber 25, having the predetermined thickness,
is attached to the outer surface 2a to conform to the shape of the
outer surface 2a. The protrusion members 30 are attached to the
circumferential surface of the elastic rubber 25, which is attached
to the curved outer surface 2a, via a net-shaped member 20.
[0020] The net-shaped member 20 is configured to have the shape of
a mesh grid, such as a net or a wire net. First ends of the
protrusion members 30 are attached and bonded to the surface of the
elastic rubber 25. The net-shaped member 20 enables the additional
fastening of the protrusion members 30 in such a way that the
protrusion members are inserted into grid holes, which are formed
to pass through the net-shaped member.
[0021] The protrusion members 30 may be formed using protrusions
selected from among a polygonal or cylindrical protrusion 31, a
tapered polygonal or tapered cylindrical protrusion 32, which has a
shape that is tapered from the surface thereof that is attached to
the elastic rubber 25 to the distal portion thereof, a T-shaped
polygonal or T-shaped cylindrical protrusion 33, which has a shape
that is similar to the tapered polygonal or tapered cylindrical
protrusion, and in which an end thereof, which is attached to the
elastic rubber 25, is formed to be relatively wider, and a
spherical protrusion 34.
[0022] In greater detail, the above-described protrusion members 30
may be formed of one type of protrusion selected from among the
above-described polygonal, cylindrical, T-shaped and spherical
protrusions 31, 32, 33 and 34, or may be a combination of the
above-described polygonal, cylindrical, T-shaped and spherical
protrusions 31, 32, 33 and 34, and are attached to the surface of
the elastic rubber 25 via the net-shaped member 20 using an
adhesive agent.
[0023] In the rotary-type polishing device having protrusion
members, which is described above, when the rotary shaft 1 is
rotated by a rotational means, the disc-type body 2 rotates, and
various types of protrusion members 30, which are attached to the
surface of the elastic rubber 25, which is attached to the
circumferential surface of the disc-type body 2, via the net-shaped
member 20, repeatedly come into contact with the round surface 12
of the target material 11. As a result, polishing is achieved.
[0024] This means that the present invention has a structural
characteristic in which the net-shaped member 20 prevents the
protrusion members 30 from being released due to centrifugal force
or impact when rotated at high speed.
[0025] Meanwhile, in another embodiment of the present invention,
the elastic rubber 25 may be manufactured along with the protrusion
members 30, in which diamonds are contained, in a double injection
manner. When the bottoms of the protrusion members 30 are embedded
in the elastic rubber 25 as shown in FIG. 4, more elastic and
reliable protrusion members 30 may be manufactured.
[0026] As described above, according to the present invention, the
plurality of protrusion members is coupled to the elastic rubber
via the net-shaped member, so that the protrusion members, which
are supported so as not to be released from the elastic rubber
using the net-shaped member, are repeatedly brought into contact
with a target material thanks to the elastic force of the elastic
rubber and, in addition, come into contact with an uneven surface
at a constant pressure, with the result that the surface of the
target material can be polished, durability can be improved because
damage to the protrusion members is prevented thanks to the elastic
action of the elastic rubber when polishing is performed, and the
polishing effect can be maximized.
[0027] Although the preferred embodiments of the present invention
have been disclosed for illustrative purposes, those skilled in the
art will appreciate that various modifications, additions and
substitutions are possible, without departing from the scope and
spirit of the invention as disclosed in the accompanying
claims.
* * * * *