KR20090027958A - Grinding wheel - Google Patents
Grinding wheelInfo
- Publication number
- KR20090027958A KR20090027958A KR1020070093182A KR20070093182A KR20090027958A KR 20090027958 A KR20090027958 A KR 20090027958A KR 1020070093182 A KR1020070093182 A KR 1020070093182A KR 20070093182 A KR20070093182 A KR 20070093182A KR 20090027958 A KR20090027958 A KR 20090027958A
- Authority
- KR
- South Korea
- Prior art keywords
- grinding
- fastening
- wheel body
- fastening plate
- plate
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
- B24D5/06—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor with inserted abrasive blocks, e.g. segmental
- B24D5/063—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor with inserted abrasive blocks, e.g. segmental with segments embedded in a matrix which is rubbed away during the grinding process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
- B24D5/16—Bushings; Mountings
Abstract
The present invention is a disk-shaped wheel body; A fastening plate extending in at least one of two directions intersecting the plate surface of the wheel body along an outer circumferential surface of the wheel body; A plurality of passing holes formed through the fastening plate radially outward and provided along an outer circumferential surface of the wheel body; A plurality of grinding segments provided with a fastening hole corresponding to at least one of the plurality of through holes and disposed radially outwardly of the fastening plate along an outer circumferential surface of the wheel body; And a fastening member passing through the through hole to be coupled to the fastening hole such that the plurality of grinding segments are coupled to the fastening plate. This eliminates the need for dressing by using grinding segments with diamond particles distributed on the surface, long replacement cycles and low replacement costs, and eliminates the possibility of safety accidents without grinding powder. have.
Description
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grinding wheel, and more particularly, to a tabletop grinding wheel using grinding segments having diamond particles distributed on a surface thereof.
Grinding is a kind of processing that belongs to the final stage of machining. The roughness and shape of the grinding surface directly affect the quality of the product, and the roughness and degree of the grinding surface are the surface of the grinding wheel. It is directly affected by the condition. In addition, grinding is widely used to remove burrs generated after machining operations such as casting and welding.
In general, the grinding grindstone 100 used in the grinding process, as shown in Figure 1, is divided into abrasive grains (砥 粒, hereinafter, the same) corresponding to the grindstone particles, pores between the binder and the abrasive grains for bonding the abrasive grains . That is, the conventional grinding wheel 100 is produced by adhesive molding the abrasive grains having a large hardness into a suitable binder.
The abrasive grains used for processing the grinding wheel 100 are minerals of high hardness, such as natural abrasive grains such as Emery, spinel, garnet and silica sand, and molten alumina and carbonization. Artificial abrasive grains, such as carbides or nitrides with high hardness, such as silicon and boron carbide, are used.
As a binder of the grinding wheel 100, a binder is composed of a soluble inorganic material or an organic material to be combined with a grain through a solving process, a binder mainly composed of sodium silicate, and a rubber, a resin, a synthetic resin, a bakelite, and the like. Organic binders and the like are used.
The pore of the grinding wheel 100 is a space between the abrasive grains and the abrasive grains to provide a free space for the abrasive grains to elastically deform during the grinding operation.
The life of the grinding wheel 100 of such a configuration is abrasion of abrasive grains, deterioration of the pore role due to clogging due to adhesion of chips cut out from the metal surface, surface damage by grinding burning, and It is determined by factors such as falling off of the abrasive grains due to weakening of the binding force between the abrasive grains.
Here, when normal grinding is performed under the optimum grinding conditions, clogging or abrasion is generated by the regeneration of the grinding wheel 100, and the particles having a large grinding resistance fall off and new abrasive grains are in charge of the processing. That is, the grinding operation using the conventional grinding wheel 100 is based on the deformation of the grinding wheel 100.
The conventional grinding wheel 100 is a surface of the grindstone working surface of the grinding wheel 100 due to the abrasion of the surface frequently in contact with the workpiece due to the deformation of the grinding wheel 100 as the grinding operation is continued as described above The shape is deformed, and in order to solve this problem, it is inconvenient to select a suitable time point and dress the grinding wheel 100 using a dresser to form a new grinding wheel working surface.
In addition, even after undergoing the dressing operation as described above, due to the continuous wear of the grinding wheel 100, the life of the grinding wheel 100 has a limit, of course, which is inconvenient to replace the grinding wheel 100 frequently .
In addition, a problem that the internal air of the workplace is significantly worsened by the grinding powder generated when the abrasive grains and the combinations constituting the grinding wheel 100 are separated from the grinding wheel 100 during the grinding operation by the conventional grinding wheel 100. there was.
In addition, the conventional grinding wheel 100 has a low binding force between the abrasive grains by the combination, or when the overload occurs due to the high-speed rotation, the grinding wheel itself is destroyed during the rotation, a fatal effect on the safety of the operator There is a risk of giving.
Accordingly, an object of the present invention is to use a grinding segment in which diamond particles are distributed on the surface, which does not require dressing, and the replacement cycle is long, but the replacement cost is low, and the possibility of a safety accident without grinding powder is discharged. To provide a tabletop grinding wheel removed.
According to the present invention, the object is a disk-shaped wheel body; A fastening plate extending in at least one of two directions intersecting the plate surface of the wheel body along an outer circumferential surface of the wheel body; A plurality of passing holes formed through the fastening plate radially outward and provided along an outer circumferential surface of the wheel body; A plurality of grinding segments provided with a fastening hole corresponding to at least one of the plurality of through holes and disposed radially outwardly of the fastening plate along an outer circumferential surface of the wheel body; And a fastening member passing through the through hole to be coupled to the fastening hole such that the plurality of grinding segments are coupled to the fastening plate.
Here, a protrusion formed on any one side of the fastening plate and the grinding segment protruding toward the other side; The fastening plate may further include a groove provided at the other side of the grinding segment to which the protrusion is inserted when the grinding segment is coupled to the fastening plate.
The protrusion may be formed along one of the fastening plate and the grinding segment along an outer diameter direction of the wheel body, and a cross-sectional shape in a direction crossing the wheel body may have a 'c' shape. The cross section in the radial direction of the wheel body of the groove portion may be formed corresponding to the cross-sectional shape of the protrusion.
In addition, the cross-sectional shape in the radial direction of any one of the wheel body formed in the fastening plate of the protrusion and the groove portion has a dove tail shape; The other one of the protrusion and the groove formed in the grinding segment may be formed to correspond to the cross-sectional shape of the protrusion such that the grinding segment is inserted into the fastening plate in a direction crossing the radial direction of the wheel body.
The fastening plate may include a first plate portion extending in a first direction crossing the plate surface of the wheel body and a second play portion extending in a second direction opposite to the first direction; The through hole includes a first through hole formed in the first plate portion and a second through hole formed in the second plate portion; The fastening hole formed in one of the grinding segments includes a pair of first fastening holes corresponding to a pair of adjacent first through holes, and a pair of second fastening holes corresponding to an adjacent pair of second through holes. can do.
In addition, diamond particles for grinding may be distributed on the outer surface of the grinding segment.
According to the present invention, the grinding segment having the diamond particles distributed on the surface does not require dressing, the replacement cycle is long, and the replacement cost is low, and the possibility of a safety accident is eliminated without grinding powder being discharged. A tabletop grinding wheel is provided.
In addition, according to the present invention, even when the grinding segments reach the end of life, only the grinding segments can be replaced, so that the wheel body can be recycled, and the grinding segments can be replaced individually.
1 is a perspective view of a conventional grinding wheel,
2 is a perspective view of a grinding wheel according to a first embodiment of the present invention,
3 is a cross-sectional view taken along line III-III of FIG. 2,
4 is a perspective view of a grinding segment of the grinding wheel of FIG. 2, FIG.
5 is a perspective view of a grinding wheel according to a second embodiment of the present invention,
FIG. 6 is a partial cross-sectional view of a portion in which a grinding segment and a fastening plate of a grinding wheel are coupled according to a second embodiment of the present invention;
7 is a perspective view of a grinding segment of the grinding wheel of FIG. 6.
* Explanation of symbols for main parts of the drawings
1: grinding wheel 10: wheel body
11: mounting inner hole 12: reducing hole
20: fastening plate 21: first plate portion
22: second plate portion 23: first through hole
24: second passage hole 25: protrusion
30: grinding segment 33: first fastening hole
34: second fastening hole 35: groove
40: fastening member
Hereinafter, with reference to the accompanying drawings will be described in detail the present invention. Here, in describing the grinding wheel according to the present invention, even if the embodiment is different, the same reference numerals are used for the same configuration, and the description may be omitted as necessary.
The grinding wheel 1 according to the first embodiment of the present invention, as shown in Figures 2 and 3, the wheel body 10, the fastening plate 20, a plurality of through holes (23, 24), a plurality of Grinding segment 30, and fastening member 40.
The wheel body 10 is provided in a disc shape and has a thickness such that the grinding wheel 1 according to the present invention is applicable to a tabletop grinder (not shown). Here, the wheel body 10 according to the present invention is provided with a mounting inner diameter hole 11 for mounting to a tabletop grinder in the center portion, the grinding wheel according to the invention radially outward from the mounting inner diameter hole 11 ( 1) At least one weight loss hole 12 is formed to reduce the overall weight.
The fastening plate 20 extends in at least one of two directions crossing the plate surface of the wheel body 10 along the outer circumferential surface of the wheel body 10. Here, the fastening plate 20 according to the present invention, as shown in Figure 3, as an example that extends in both directions intersect with the plate surface direction of the wheel body (10).
Hereinafter, the fastening plate 20 in one direction (upper direction in FIG. 3, hereinafter referred to as “first direction”) in both directions intersecting the plate surface of the wheel body 10 from the edge of the wheel body 10. An example will be described including an extended first plate portion 21 and a second plate portion 22 extending in a second direction (down direction in FIG. 3) opposite to the first direction.
The through holes 23 and 24 are formed to penetrate radially outward through the fastening plate 20. The through holes 23 and 24 are provided along the outer circumferential surface of the fastening plate 20. Here, the through holes 23 and 24 include a plurality of first through holes 23 formed in the first plate part 21 of the fastening plate 20, and a plurality of second through holes provided in the second plate part 22. Ball 24.
The grinding segment 30 is disposed radially outward of the fastening plate 20 along the outer circumferential surface of the wheel body 10, as shown in FIG. 2. The grinding segments 30 are provided with fastening holes 33 and 34 corresponding to the through holes 23 and 24 formed in the fastening plate 20.
Here, as shown in FIG. 4, the fastening holes 33 and 34 provided in each grinding segment 30 have a pair of adjacent first through holes formed in the first plate part 21 of the fastening plate 20. A pair of first fastening holes 33 corresponding to (23) and a pair of adjacent second pass holes 24 formed in the second plate portion 22 of the fastening plate 20 It may include a second fastening hole (34).
Through the above configuration, each grinding segment 30 has four fastening members 40 passing through a pair of first through holes 23 and a pair of second through holes 24, for example, for fastening. A screw or bolt is coupled to the pair of first fastening holes 33 and second fastening holes 34 provided in the grinding segment 30, thereby being coupled and fixed along the outer circumferential surface of the fastening plate 20.
On the other hand, the grinding wheel 1 according to the present invention is formed on one side of the fastening plate 20 and the grinding segment 30, protruding toward the other side 25, the fastening plate 20 and the grinding segment 30 And provided on the other side of the grinding segment 30 may further include a groove portion 35 is inserted into the protrusion 25 when coupled to the fastening plate 20.
In the exemplary embodiment of the present invention, as shown in FIG. 3, the protrusion 25 is provided on the fastening plate 20, and the groove 35 is provided on the grinding segment 30 as an example. Of course, it can be changed. In addition, the protrusion 25 is formed in the fastening plate 20 along the outer diameter direction of the wheel body 10.
Here, the protrusion 25 according to the present invention, as shown in Figure 3, the cross-sectional shape in the direction crossing the radial direction of the wheel body 10 has a substantially 'C' shape, the groove portion 35 The cross section in the direction crossing the radial direction of the wheel body 10 may have a 'c' shape corresponding to the cross-sectional shape of the protrusion 25.
On the other hand, diamond particles for grinding are distributed on the outer surface of the grinding segment 30. Here, diamond particles distributed on the outer surface of the grinding segment 30 may be attached to the outer surface of the grinding segment 30 through brazing in a hydrogen atmosphere or a vacuum atmosphere. Through this, unlike the conventional grinding wheel (100, see FIG. 1), the diamond is firmly attached to the outer surface of the grinding segment 30 through brazing, thereby significantly increasing the life of the grinding wheel (1), Elimination of the grinding powder is minimized because it does not occur, it is possible to eliminate the occurrence of a safety accident due to the destruction of the grinding wheel (100) that can occur when using the conventional grinding wheel (100).
In addition, the outer surface of the grinding segment 30 has a round shape, as shown in Figure 2, it is possible to improve the work efficiency during the grinding operation.
Through the above configuration, by fastening the grinding segment 30 in which the diamond particles are distributed on the surface to the fastening plate 20 by screws or bolts, the grinding wheel 1 used in the thick tabletop grinder is made of diamond. It becomes manufacturable, and the inconvenience that the wheel body 10 has to enter the brazing furnace during the brazing process is eliminated by brazing only each grinding segment 30 during the brazing process for distributing the diamond particles.
In addition, by employing the 'c' shaped projection 25 and the groove 35, the coupling operation is facilitated when the grinding segment 30 is coupled to the fastening plate 20.
In addition, the plurality of grinding segments 30 which perform the grinding operation are separable from the wheel body 10, so that the grinding segments 30 which have reached the end of their lifespan among the plurality of grinding segments 30 are separately separated from the wheel body 10. Replacement is possible, which can significantly reduce the replacement cost.
Hereinafter, the grinding wheel 1a according to the second embodiment of the present invention will be described in detail with reference to FIGS. 5 to 7. Here, in describing the grinding wheel 1a according to the second embodiment of the present invention, the same reference numerals are used for the components corresponding to the grinding wheel 1 according to the first embodiment. Description is omitted. In addition, of course, components corresponding to the first embodiment among the components not shown in FIGS. 5 to 7 of the second embodiment of the present invention may be provided in the second embodiment.
The grinding wheel 1a according to the second embodiment of the present invention is formed on one side of the fastening plate 20a and the grinding segment 30a and protrudes toward the other side, and the fastening plate 20a and grinding. The groove 30a is provided on the other side of the segment 30a and the projection 25a is inserted when the grinding segment 30a is coupled to the fastening plate 20a.
Here, in the embodiment of the present invention, as shown in Fig. 5 and 6, the protrusion 25a is provided in the fastening plate 20a, the groove 35a is provided in the grinding segment 30a as an example Of course, the position may be changed.
In the grinding wheel 1a according to the second embodiment of the present invention, the cross-sectional shape in the radial direction of the wheel body 10 of the protrusion 25a formed on the fastening plate 20a is shown in FIG. 6. As shown, it has a dove tail shape. In addition, the cross-sectional shape in the radial direction of the wheel body 10 of the groove portion 35a formed in the grinding segment 30a has a dove tail shape corresponding to the cross-sectional shape of the protrusion 25a.
Accordingly, when the grinding segments 30a are disposed along the outer circumferential surface of the fastening plate 20a, the protrusions 25a formed on the fastening plate 20a are formed in the grooves 35a formed on the grinding segments 30a. After inserting and arranging in the direction intersecting with the radial direction of 10), the joining operation becomes easier by fixing the grinding segment 30a using the fastening member 40 in the same manner as in the first embodiment.
In addition, the projection 25a inserted into the groove 35a firmly holds the grinding segment 30a in the rotational direction when the grinding wheel 1a is rotated, so that the grinding segment 30a together with the fastening member 40 during the grinding operation. ) More firmly.
Meanwhile, in the first and second embodiments of the present invention, when the fastening member 40 is fastened, the first fastening hole 33 and the second fastening hole 33 of the fastening member 40 and the grinding segments 30 and 30a ( It is of course possible to insert an adhesive for increasing the adhesive force between the 34).
In addition, in the first and second embodiments of the present invention, a cross section (see FIG. 3) in the direction in which the fastening plates 20 and 20a and the wheel body 10 intersect the radial direction of the wheel body 10 is In the example, the first plate part 21 and the second plate part 22 have a 'T' shape, but the fastening plate extends in one direction from the wheel body to have an approximately 'L' shape. Of course it can.
Although some embodiments of the invention have been shown and described, it will be apparent to those skilled in the art that modifications may be made to the embodiment without departing from the spirit or spirit of the invention. . It is intended that the scope of the invention be defined by the claims appended hereto and their equivalents.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020070093182A KR20090027958A (en) | 2007-09-13 | 2007-09-13 | Grinding wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020070093182A KR20090027958A (en) | 2007-09-13 | 2007-09-13 | Grinding wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20090027958A true KR20090027958A (en) | 2009-03-18 |
Family
ID=40695339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020070093182A KR20090027958A (en) | 2007-09-13 | 2007-09-13 | Grinding wheel |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR20090027958A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101934502A (en) * | 2010-09-07 | 2011-01-05 | 宁波大学 | Easily recovered electroplated diamond grinding wheel |
-
2007
- 2007-09-13 KR KR1020070093182A patent/KR20090027958A/en not_active Application Discontinuation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101934502A (en) * | 2010-09-07 | 2011-01-05 | 宁波大学 | Easily recovered electroplated diamond grinding wheel |
| CN101934502B (en) * | 2010-09-07 | 2012-11-28 | 宁波大学 | Easily recovered electroplated diamond grinding wheel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E902 | Notification of reason for refusal | ||
| E601 | Decision to refuse application |