JPH0715727Y2 - Grinding wheel - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grindstone machine, and more particularly to a grindstone machine mounted on a rotary shaft for grinding the surfaces to be ground of various objects to be ground.

[0002]

2. Description of the Related Art Conventionally, this seed grindstone is formed by providing a boss portion for mounting a rotary shaft at the center of the grindstone body and a grinding surface on one outer surface of the body. Is mounted on a rotary shaft and the whole body is rotated to grind various surfaces to be ground by the grinding surface. The grinding surface provided on the outer surface of one side of the main body is formed by solidifying abrasive grains with an adhesive.

[0003]

However, in the above grinding wheel, when grinding various surfaces to be ground by the grinding surface of the grinding wheel body, frictional heat is generated between them and the temperature of the main body becomes high. As a result, the adhesive strength of the adhesive that bonds the abrasive grains on the ground surface is significantly reduced. Therefore, when grinding various surfaces to be ground by the grinding surface, a grinding liquid is used to perform the grinding operation while cooling the main body with the grinding liquid. When the grinding operation is performed, the strength of the adhesive can be prevented from lowering, but the following problems occur.

That is, when the grinding liquid is used, the grinding liquid enters between the grinding surface and the surface to be ground and exerts a lubricating action, thereby lowering the grinding efficiency of the grinding surface with respect to the surface to be ground. In addition, as a post-treatment after the grinding work, it is necessary to remove or remove the grinding liquid adhering to the grinding surface or the surface to be ground.

The present invention has been made in view of the above problems, and it is an object of the present invention to cool a grindstone body without using a grinding liquid and to grind a grinding surface with respect to a surface to be ground. It is to provide a grindstone that does not cause a reduction in grinding efficiency and does not require additional post-treatment such as cleaning.

[0006]

In order to achieve the above object, the present invention is a grindstone mounted on a rotary shaft 2 for grinding a surface to be ground, having a grinding surface 12 on the front side and the rotating surface at the center. On the back side of the grindstone main body 1 having the boss portion 11 mounted on the shaft 2, fins 15 that form an air flow from the center side to the outer peripheral side by rotation are provided, and the boss portion 11 is provided.
While forming a large number of air holes 16 communicating with the air flow by the fins 15 on the grinding surface 12 of the grindstone main body 1,
Air circulation groove 1 that forms an air flow from the outer peripheral side to the center side
7 was formed .

[0007]

According to the above grinding wheel , the grinding surface 12
During the grinding work of the surface to be ground, the rotation of the fin 15
From the surface side of the main body 1, the central boss portion 11 is installed.
To the outside of the rear surface of the main body 1 through the respective air holes 16
And at the same time that the air flow to be sucked out is formed
The air passing through the air circulation groove 17 is merged with the air flow.
The air on the grinding surface 12 side from the air circulation groove 17
Flows and discharges to the outside of the back surface of the main body 1 through each air hole 16.
Issued, the cooling effect of the grinding face 12 overall in this air flow
Rate is sufficiently increased, and the grinding surface 12 is used for grinding.
Grinding scraps removed from the air circulation groove 17 into each air hole 16
After that, it is quickly discharged to the outside of the back surface of the main body 1,
The clogging of the grinding surface 12 is reduced, and moreover, the above
By providing the air circulation groove 17, the grinding surface 12 is subjected to air flow.
Since the edge portion is formed, the grinding effect of the grinding surface 12 is also high.
It can be

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the grindstone shown in FIG. 1, a boss 11 having a mounting hole 11a for mounting a rotary shaft is provided at the center of a disk-shaped grindstone main body 1, and the main body 1 On one outer surface, a grinding surface 12 formed by solidifying abrasive grains with an adhesive agent
Is provided. Then, the mounting hole 11a of the boss portion 11
The rotary shaft 2 driven to rotate by the drive source is inserted into the rotary shaft 2, and the insertion end portion is tightened with the fixing tool 3, whereby the main body 1 is integrally mounted on the rotary shaft 2, and the rotary shaft 2 is rotated. Along with this, the entire main body 1 is rotated so that the grinding surfaces 12 grind the surfaces to be ground of various objects to be ground.

Further, the grindstone body 1 has the boss portion 1
1 and a mounting portion 13 of the grinding surface 12 integrally formed on the outer periphery thereof, and the mounting surface 13 has the grinding surface 12
Is integrally formed, the mounting portion 13 is formed thick with respect to the boss portion 11, and the thin portion is formed at a position displaced to one side in the thickness direction at the central portion of the mounting portion 13. The boss portion 11 is integrally formed in a concave shape with respect to the mounting portion 13, and in the concave portion 14 surrounded by the boss portion 11 and the mounting portion 13, the shaft end of the rotating shaft 2 is tightened with the fixing nut 3. I am trying to fix it.

Therefore, in the above grindstone,
As clarified in FIG. 1, on the back surface of the grindstone body 1 on the side opposite to the side where the grinding surface 12 is formed, radially extends from the center side outward in the radial direction, and follows the rotary shaft 2. A plurality of fins 15 that form an air flow from the center side to the outer peripheral side by the rotation of the main body 1 are integrally provided, and at the outer peripheral portion of the boss portion 11 where the fixture 3 is attached, the grinding surface 12 side. A plurality of air holes 16 are formed to communicate with the air flow generated by the rotation of each fin 15 through the recess 14.

Further, on the grinding surface 12 of the grindstone body 1, as shown in FIG. 2, as the fins 15 rotate, the concave portion 1 is formed from the outer peripheral side of the grinding surface 12.
A plurality of air circulation grooves 1 forming an air flow toward the 4 side
7 are provided radially in the radial direction.

When forming the air circulation grooves 17 in the grinding surface 12, as shown in FIG. 3, the air circulation grooves are formed between the outer peripheral side of the grinding surface 12 and the concave portion 14. 17 may be formed so as to draw an arc locus. Further, as shown in FIG. 4, the air circulation groove 17 may be formed so as to have a spiral shape between the outer peripheral side of the grinding surface 12 and the concave portion 14.

Next, the operation of the grinding stone configured as described above will be described. When grinding the surfaces to be ground of various objects to be ground with a grindstone, first, insert the tip end shaft portion of the rotary shaft 2 from the rear surface side of the grindstone body 1 into the mounting hole 11a of the boss portion 11, The main body 1 is integrally mounted on the rotary shaft 2 by tightening the insertion end portion on the concave portion 14 side with the fixture 3, and the whole main body 1 is rotated with the rotation of the rotary shaft 2. Then, various ground surfaces are ground by the ground surface 12.

During the work of grinding the surface to be ground by the grinding surface 12, a plurality of the fins 15 are provided on the back surface opposite to the side where the grinding surface 12 is formed, and the central boss portion of the main body 1 is provided. Since a large number of air holes 16 communicating with the air flow generated by the rotation of the fins 15 are formed in 11, the fins 15 are rotated along with the main body 1, and the rotation of the fins 15 causes the fins 15 to rotate. On the back surface side of the main body 1, an air flow is formed from the central portion toward the outer peripheral side, and the entire back surface side of the main body 1 is cooled by this air flow. Further, due to the air flow by the fins 15, the air on the surface side of the main body 1 on which the grinding surface 12 is provided passes from the concave portions 14 through the air holes 16 and the main body 1
The air flow that is sucked and discharged to the outside of the back surface of the main body 1 and sucked and discharged to the outside of the back surface of the main body 1 causes the grinding dust ground by the grinding surface 12 to be discharged to the outside of the back surface of the main body 1 and Clogging of the grinding surface 12 is reduced, and at the same time, cooling of the grinding surface 12 side of the main body 1 is also performed by the air flow.

That is, the air flow generated on the back surface side of the main body 1 as the fins 15 rotate, and the air flow from the front surface side of the main body 1 through the recesses 14 and the air holes 16 to the main body. Due to the air flow sucked and discharged to the outside of the back surface of No. 1, the entire front and back surfaces of the main body 1 can be efficiently cooled without using a grinding liquid or the like as in the conventional case.

Moreover, as shown in FIGS. 1 and 2, on the grinding surface 12 side of the grindstone main body 1, a plurality of air circulation grooves 17 extending radially in the radial direction from the outer peripheral side to the concave portion 14 side. Or, as shown in FIG. 3, each air circulation groove 17 is formed between the outer peripheral side of the grinding surface 12 and the concave portion 14 so as to draw an arc locus, or
As shown in FIG. 4, since the air circulation groove 17 is formed so as to have a spiral shape between the outer peripheral side of the grinding surface 12 and the recessed portion 14, the air circulation groove 17 passes through the air circulation groove 17.
The air flowing through the fins 15 rotates as the fins 15 rotate.
From the ground surface 12 side of the concave portion 14 and each air hole 16
Air sucked and discharged to the outside of the back surface of the main body 1 through the
Combined with the flow, the air on the grinding surface 12 side is efficiently circulated and discharged from the air circulation grooves 17 to the outside of the back surface of the main body 1 through the recesses 14 and the air holes 16.

[0017] Therefore, the by air flow is discharged to the rear face outside of the main body 1 from each of the air circulation groove 17, to the cooling efficiency of the entire grinding surface 12 is sufficiently increased, moreover grinding surface of this <br/> The grinding dust ground in 12 is the air circulation groove 1
7 is quickly discharged to the outside of the rear surface of the main body 1 through the concave portions 14 and the air holes 16, and the ground surface 1
2 is less likely to be clogged, and since the edge portion is formed on the grinding surface 12 by providing each of the air circulation grooves 17, the grinding effect of the surface to be ground by the grinding surface 12 is also enhanced at this edge portion. Be done.

[0018]

As described above, in the grindstone of the present invention, the grindstone main body 1 has the grinding surface 12 on the front side and the boss portion 11 to be mounted on the rotary shaft 2 at the center, on the back side of the grindstone main body 1. A fin 15 that forms an air flow from the center side to the outer peripheral side by rotation is provided, and the fin 1 is attached to the boss portion 11.
5 form a large number of air holes 16 communicating with the air flow, while the grinding surface 12 of the grindstone body 1 is centered from the outer peripheral side.
The air circulation groove 17 that forms the air flow to the side is formed.
By the above, the grinding work of the surface to be ground by the grinding surface 12
At the time, as the fin 15 rotates, the surface side of the main body 1
From each of the air holes 16 provided in the central boss portion 11
Air flow that is sucked and discharged to the outside of the back surface of the main body 1
At the same time as this is formed, the air flow
The air passing through the groove 17 is merged, and the air on the grinding surface 12 side is
Air passes through each air hole 16 from the air circulation groove 17 and the book
It is circulated and discharged to the outside of the back surface of body 1,
The cooling efficiency of the entire grinding surface 12 is sufficiently enhanced, and
Moreover, the grinding dust ground on the grinding surface 12 is
Outside of the back surface of the main body 1 from the through groove 17 through each air hole 16
Is quickly discharged to the side, and the grinding surface 12 is not clogged.
In addition, the number of air circulation grooves 17 should be reduced.
Since an edge portion is formed on the grinding surface 12 by
Therefore, the grinding effect of the grinding surface 12 can be enhanced.
Therefore, do not use grinding liquid etc. as before.
In addition, the main body 1 can be cooled well,
The grinding efficiency of the grinding surface 12 with respect to the surface to be ground is lowered.
And post-processing such as cleaning of the grinding surface 12 and the surface to be ground.
There is no need for additional physical work.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a grindstone according to the present invention.

FIG. 2 is a plan view showing an embodiment of an air circulation groove provided in the grindstone.

FIG. 3 is a plan view showing an embodiment of an air circulation groove of the same.

FIG. 4 is a plan view showing an embodiment of the air circulation groove of the same.

[Explanation of symbols]

 1 Grinding stone main body 11 Boss part 12 Grinding surface 15 Fin 16 Air hole 17 Air circulation groove 2 Rotating shaft

Claims (1)

[Scope of utility model registration request] 1. A grindstone mounted on a rotary shaft 2 for grinding a surface to be ground, the grindstone having a grinding surface 12 on the front side and a boss portion 11 mounted on the rotary shaft 2 at the center. On the back side of the main body 1, fins 15 that form an air flow from the center side to the outer peripheral side by rotation are provided, and the boss portion 11
While forming a large number of air holes 16 communicating with the air flow by the fins 15 on the grinding surface 12 of the grindstone main body 1,
Air circulation groove 1 that forms an air flow from the outer peripheral side to the center side
Grinding stone machine characterized by forming 7 .