KR20170024401A - Grinding wheel - Google Patents

Grinding wheel Download PDF

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Publication number
KR20170024401A
KR20170024401A KR1020150119615A KR20150119615A KR20170024401A KR 20170024401 A KR20170024401 A KR 20170024401A KR 1020150119615 A KR1020150119615 A KR 1020150119615A KR 20150119615 A KR20150119615 A KR 20150119615A KR 20170024401 A KR20170024401 A KR 20170024401A
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KR
South Korea
Prior art keywords
sandpaper
hub
hub member
fixed
center
Prior art date
Application number
KR1020150119615A
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Korean (ko)
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KR101832873B1 (en
Inventor
현석진
Original Assignee
(주)유영기업
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Publication date
Application filed by (주)유영기업 filed Critical (주)유영기업
Priority to KR1020150119615A priority Critical patent/KR101832873B1/en
Publication of KR20170024401A publication Critical patent/KR20170024401A/en
Application granted granted Critical
Publication of KR101832873B1 publication Critical patent/KR101832873B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D9/00—Wheels or drums supporting in exchangeable arrangement a layer of flexible abrasive material, e.g. sandpaper
    • B24D9/003—Wheels having flaps of flexible abrasive material supported by a flexible material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D9/00—Wheels or drums supporting in exchangeable arrangement a layer of flexible abrasive material, e.g. sandpaper
    • B24D9/08—Circular back-plates for carrying flexible material

Abstract

The abrasive wheel of the present invention comprises a hub which is fixed to a polishing apparatus and sandpaper radially arranged on the hub, the hub is made of a metal material, and a first hub member in which the sandpaper is radially fixed, And a second hub member which is fixed to the hub member and is made of a resin material and is fixed to the polishing apparatus, so that pressure can be prevented from being applied to the sandpaper when the grinding wheel is fixed to the grinding apparatus, It is possible to prevent the hub or the send paper from being detached in the course of fixing.

Description

GRINDING WHEEL

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polishing wheel for polishing surfaces, curved portions, etc. of various structures such as ships, automobiles, and the like, in which sandpaper is radially arranged.

Generally, a grinder used for polishing a metal surface is mainly used as an abrasive wheel in which a sandpaper is arranged radially in a circumferential direction.

A conventional grinding wheel has a rectangular body and a plurality of sandpaper layers formed by integrally forming a bonding portion integrally formed on the upper side of the body, as shown in Japanese Utility Model Registration No. 20-0396161 (Sep. 20, 2005) Wherein when the hub wheel is mounted on the circular mounting portion, the upper and lower caps of the hub wheel are bonded to each other by epoxy, And is bonded by a resin adhesive.

However, since the conventional grinding wheel is arranged in an inclined manner to arrange the sandpaper in a radial direction, it is difficult to center the sandpaper after arranging the sandpaper in a radial direction, and when the sandpaper is fixed by using the upper and lower caps in the assembling process, there is a problem.

In addition, since the sandpaper of the conventional grinding wheel is arranged in an inclined manner, the number of sandpaper can not be increased, so that the grinding force is lowered and the life is short.

In addition, the conventional polishing wheel has a problem that the send paper adhered to the upper and lower caps is separated from the upper and lower caps during high-speed rotation.

Patent Document 1: Registration Utility Model No. 20-0396161 (September 20, 2005)

Accordingly, it is an object of the present invention to provide a polishing wheel which is formed so that the sandpaper is caught on the hub, thereby preventing the sandpaper from being detached from the hub during use.

It is another object of the present invention to provide a polishing wheel in which sandpaper is arranged radially in parallel to increase the number of sandpaper, thereby increasing the grinding force and increasing the life of the grinding wheel.

Another object of the present invention is to minimize the occurrence of defects due to the center of the sandpaper being misaligned during the assembling process because the centers of the sandpaper are matched when the sandwiching pawls are formed on the sandpaper and inserted into the catching grooves formed in the hub, The present invention provides a grinding wheel that can be used as a grinding wheel.

Another object of the present invention is to provide a method of manufacturing a polishing apparatus, which comprises a hub member having a first hub member to which a sandpaper is fixed and a second hub member to be fixed to the polishing apparatus so that pressure is not applied to the sandpaper when the polishing wheel is fixed to the polishing apparatus So that it is possible to prevent the phenomenon that the hub or the send paper is separated from the grinding wheel while the grinding wheel is fixed by the grinding apparatus.

In order to achieve the above object, the grinding wheel of the present invention comprises a hub fixed to a grinding apparatus, and sandpaper radially arranged on the hub, wherein the hub is made of a metal material, and the sandpaper is radially fixed 1 hub member, and a second hub member fixed to the first hub member and formed of a resin material and fixed to the polishing apparatus.

Wherein the first hub member is in the form of a disk, an opening is formed at the center, a protrusion protruding in a cylindrical shape around the opening to fix the second hub member is formed, and the second hub member A second seating portion extending from the first seating portion to seat the sandpaper is formed, and a hook can be formed at an edge of the first seating portion, the hook being engaged with the sandpaper in a circumferential direction.

The second hub member is formed to have the same outer diameter as the outer diameter of the first seating portion and fixed to the center of the first hub member, and a seating groove into which the nut member of the polishing apparatus is inserted may be formed on the upper surface thereof.

The second hub member may be formed integrally with the first hub member by insert injection.

The sandpaper may have an engagement groove formed at one end thereof to be engaged with the engagement protrusion and a stepped portion formed at the other end of the sandpaper to reduce the width of the sandpaper so as to have the same height as the height of the second hub member.

The entirety of the sandpaper may be formed in a rectangular shape except for the engagement groove and the stepped portion.

One side of the sandpaper may be recessed toward the center from the outer surface toward the center.

Accordingly, the polishing wheel of the present invention can be formed so that the sandpaper is caught on the hub, thereby preventing the sandpaper from being detached from the hub during use.

In addition, the polishing wheel of the present invention can increase the number of the sandpaper by allowing the sandpaper to be arranged radially in parallel, thereby increasing the grinding force and increasing the life of the polishing wheel.

In addition, since the center of the sandpaper is matched when the grinding wheel of the present invention is inserted into the engaging groove formed in the hub, the center of the sandpaper is easy to align and convenient, Can be minimized.

Further, the grinding wheel of the present invention is constituted of a hub member having a hub on which a sandpaper is fixed and a second hub member fixed on the grinding apparatus so as to prevent pressure on the sandpaper when the grinding wheel is fixed to the grinding apparatus It is possible to prevent the hub or the send paper from being detached in the process of fixing the grinding wheel by the polishing apparatus.

1 is a perspective view of a polishing wheel according to an embodiment of the present invention.
2 is an exploded perspective view of a polishing wheel according to an embodiment of the present invention.
3 is a perspective view of a hub according to one embodiment of the present invention.
4 is a cross-sectional view of a polishing wheel according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The sizes and shapes of the components shown in the drawings may be exaggerated for clarity and convenience. In addition, terms defined in consideration of the configuration and operation of the present invention may be changed according to the intention or custom of the user, the operator. Definitions of these terms should be based on the content of this specification.

FIG. 1 is a perspective view of a grinding wheel according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of a grinding wheel according to an embodiment of the present invention, FIG. 3 is a perspective view of a hub according to an embodiment of the present invention , Figure 4 is a cross-sectional view of a polishing wheel according to an embodiment of the present invention.

Referring to Figs. 1 to 4, an abrasive wheel according to an embodiment of the present invention includes a hub 10 fixed to a polishing apparatus, and a send paper 20 radially arranged on a hub 10.

The hub 10 includes a first hub member 12 formed of a metal and formed in a disc shape and having an opening 30 at the center thereof, a second hub member 12 fixed to the first hub member 12 and made of a resin material, And a second hub member (14) fixed to the second hub member (14).

The first hub member 12 and the second hub member 14 may be fixed by an interference fit method, a bolt-fastening or the like, integrally formed by insert injection, and a first hub member 12 made of a metal, And the second hub member 14 made of a resin can be fixed.

The first hub member 12 is formed with an opening 30 at the center and a cylindrical protrusion 32 is formed around the opening 30 to which the second hub member 14 is fitted and the protrusion 32 And a second seating part 34 extending from the first seating part 34 so as to be lower in height and having one end of the sandpaper 20 seated thereon, (36) are formed.

A hook 38 is formed at the edge of the first hub member 12 so that the sandpaper 20 is hooked.

The second hub member 14 is formed so as to have the same outer diameter as the first seating portion 34 so as to be opened at the center and to be inserted into the outer surface of the projecting portion 32 and to be seated in the first seating portion 34 of the first hub member And a seating groove 40 is formed on the upper surface thereof so that the nut member of the polishing apparatus can be inserted.

As described above, the hub 10 of the present invention can improve the bonding force of the first hub member 12 made of a metal and the second hub member 14 made of a resin to be bonded to the polishing apparatus, It is possible to prevent the hub 10 or the sandpaper 20 from being separated during the fixing operation.

For example, in the case of a conventional grinding wheel, when the upper cap and the lower cap are coupled to each other, when the grinding wheel is fixed to the grinding apparatus, when the position of the lower cap is not correct, The cap may fall off.

That is, in the conventional grinding wheel, the sandpaper is sandwiched between the upper and lower caps by the adhesive, and when sandwiched between the upper and lower caps in this state, the sandpeter bonded between the upper and lower caps is pressed The upper cap and the lower cap may be separated from each other and the upper cap and the lower cap may be separated from the sandwich.

The abrasive wheel of the present invention is characterized in that the sandpaper 20 is radially arranged on the first hub member 12 and the second hub member 14 made of a resin is fixed to the rotating shaft of the abrasive device, It is possible to prevent the sandpaper 20 from falling off because the pressure is not applied to the sandpaper 20.

The sandpaper 20 is rectangular in shape and has one end radially arranged on the second seating portion 36 of the first hub member 12 and on one side thereof a retaining jaw 38 formed on the first hub member 12 A stepped portion 24 is formed on the opposite side of the surface on which the engaging groove 22 is formed so as to have a width equal to the height of the second hub member 14 .

Since the sandpaper 20 is caught by the engagement protrusion 38 formed on the first hub member 12 with the engagement groove 22 formed therein, Can be prevented.

The sandpaper 20 is inserted into the engagement groove 22 of the sandpaper 20 in the engagement jaw 38 of the first hub member 12 when the sandpaper 20 is fastened to the first hub member 12 Since the assembly is completed when the adhesive is injected after being radially arranged in the circumferential direction, the assembly is easy and simple, and the center of the sandpaper 20 is easy to be fitted and convenient.

That is, when the engaging groove 22 of the sandpaper 20 is inserted into the engaging jaw 38 of the first hub member 12, the center of the sandpaper 20 is aligned, so that the sandpaper 20 is radially arranged, .

The sandpaper 20 has a rectangular shape as a whole when the hooking groove 22 and the stepped portion 24 are removed. When the hub 10 is radially arranged, the sandpaper 20 has a linear shape in the radial direction The number of the sandpaper 20 can be increased and the number of the sandpaper 20 can be increased to increase the number of the sandpaper 20, thereby increasing the grinding force and extending the service life.

Conventional sandpaper is arranged obliquely so that the sandpaper is twisted at an angle to arrange the sandpaper in a radial direction. In this case, it is difficult to center the sandpaper and the number of sandpaper can not be increased.

In the case of the present invention, the sandpaper 20 can be formed in a rectangular shape, and the sandpaper 20 can be arranged linearly from the center, thereby increasing the number of the sandpaper 20, So that the polishing operation using the outer surface of the sandpaper 20 can be easily performed.

When the sandpaper 20 of the present invention is assembled to the hub 10, one surface of the sandpaper 20, on which the stepped portion 24 is formed, is formed into a dish shape recessed inward toward the center from the outer surface, And the sandpaper 20 can be brought into closer contact with each other.

Between the end portion of the sandpaper 20 and the second hub member 14, a space portion 82 for securing a space for injecting an adhesive agent is formed. That is, a gap portion 82 is formed between the one end of the sand paper 20 and the outer surface of the second hub member 14 at regular intervals, and an adhesive is injected into the space portion 82, The adhesive force can be improved and the adhesive can be evenly applied to all the sandpaper 20, thereby preventing the sandpaper 20 from being detached.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limited to the embodiments set forth herein. Various changes and modifications may be made by those skilled in the art.

10: hub 12: first hub member
14: second hub member 20: sandpaper
22: engaging groove 24: stepped portion
30: opening 32:
34: first seat portion 36: second seat portion
38: latching jaw 40: seat groove

Claims (8)

A hub fixed to the polishing apparatus, and sandpaper radially arranged on the hub,
The hub includes a first hub member formed of a metal material and radially fixed to the sandpaper,
And a second hub member fixed to the first hub member and formed of a resin material and fixed to the polishing apparatus. The method according to claim 1,
Wherein the first hub member is in the form of a disk, an opening is formed at the center, a protrusion protruding in a cylindrical shape around the opening to fix the second hub member is formed, and the second hub member And a second seating portion extending from the first seating portion and on which the sandpaper is seated is formed, and a hook is formed on an edge of the first seating portion to sandwich the sandpaper in a circumferential direction. . 3. The method of claim 2,
Wherein the second hub member is formed with an outer diameter equal to the outer diameter of the first seating portion and is fixed to the center of the first hub member and a seating groove into which the nut member of the polishing apparatus is inserted is formed on the upper surface thereof. Wheel. 3. The method of claim 2,
And a space is formed between the inner surface of the sandpaper and the outer surface of the second hub member, through which an adhesive can flow. 3. The method of claim 2,
And a stepped portion formed to have a width equal to the height of the second hub member is formed at the other end of the sandpaper so as to have a width smaller than that of the second hub member. A grinding wheel. 6. The method of claim 5,
Wherein the sandpaper is formed in a rectangular shape as a whole except for the engaging groove and the stepped portion. The method according to claim 1,
Wherein one surface of the sandpaper is formed to be recessed inwardly toward the center from the outer surface. The method according to claim 1,
Wherein an outer surface of the sandpaper radially arranged in the hub is formed in a planar shape.
KR1020150119615A 2015-08-25 2015-08-25 Grinding wheel KR101832873B1 (en)

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KR1020150119615A KR101832873B1 (en) 2015-08-25 2015-08-25 Grinding wheel

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Application Number Priority Date Filing Date Title
KR1020150119615A KR101832873B1 (en) 2015-08-25 2015-08-25 Grinding wheel

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KR20170024401A true KR20170024401A (en) 2017-03-07
KR101832873B1 KR101832873B1 (en) 2018-02-27

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210003090A (en) * 2018-03-12 2021-01-11 구일린 챔피온 유니온 다이아몬드 컴퍼니 리미티드 Polishing tools and manufacturing methods
KR20220020519A (en) * 2020-08-12 2022-02-21 송준철 Eco wheel paper of a grinder

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200396161Y1 (en) 2005-06-03 2005-09-20 김봉철 Grinding wheel

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200248643Y1 (en) * 2001-06-18 2001-11-16 윤창곤 Abrasive wheel for sandpaper
KR200398935Y1 (en) * 2005-08-06 2005-10-17 이일영 A grinding wheel for a grinder

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200396161Y1 (en) 2005-06-03 2005-09-20 김봉철 Grinding wheel

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210003090A (en) * 2018-03-12 2021-01-11 구일린 챔피온 유니온 다이아몬드 컴퍼니 리미티드 Polishing tools and manufacturing methods
KR20220020519A (en) * 2020-08-12 2022-02-21 송준철 Eco wheel paper of a grinder

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