Grinding wheel base body

Abstract

The utility model relates to the technical field of grinding tools, in particular to a grinding wheel base body. Comprising a hole ring, an annular fixing face and a mounting ring face which are sequentially arranged from inside to outside, the hole ring comprises a first connecting part and a second connecting part which are fixedly connected, the axis of the first connecting part coincides with the axis of the second connecting part, and through holes are formed in the middle of the first connecting part and the middle of the second connecting part to form mounting holes in a base body. The cross section of the mounting hole is in a regular polygon shape. Through holes are formed in the middles of the first connecting part and the second connecting part on the hole ring to form the mounting hole in the base body, the cross section of the mounting hole is polygonal and is matched with the outer side shape of a limiting boss on a pressing plate on the angle grinder, relative rotation of the base body and the pressing plate is avoided, and abrasion consumption of the base body, the pressing plate and the nut is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to grinding tool technical field especially relates to a grinding wheel matrix. BACKGROUND

[0002] The abrasive cloth wheel plays an important role in industrial production, is widely used in industrial production and processing, mainly plays the role of polishing, and is used in the production of automobiles, ships and aviation equipment, jade, shoes heels and stainless steel products.

[0003] The abrasive cloth wheel is usually composed of a group of abrasive cloth pieces arranged in order on the base, the base is mostly made of plastic or grid glass fiber, the base is provided with a mounting hole in the middle, the abrasive cloth wheel is fixed on the connecting shaft of the special tool or the angle grinder through the mounting hole to perform mechanical or manual polishing, and the connecting shaft of the angle grinder drives the abrasive cloth wheel to rotate at high speed to polish the workpiece.

[0004] When the abrasive cloth wheel is installed on the angle grinder, the inner side surface of the hole ring on the base is attached to the outer side surface of the limiting boss of the pressing plate of the angle grinder, and then the abrasive cloth wheel is pressed between the nut and the pressing plate through the threaded connection of the nut and the connecting shaft to limit and fasten the abrasive cloth wheel.

[0005] The cross section of the inner side surface of the hole ring on the existing base is mostly circular, and the fastening of the abrasive cloth wheel is completely realized by the threaded connection of the nut and the connecting shaft, and the pressing of the base. After the abrasive cloth wheel is used for a period of time, the pressing plate and the nut are prone to wear, resulting in insufficient pressing force, loose abrasive cloth wheel, and the need to replace the pressing plate and the nut, thereby increasing the production cost. SUMMARY

[0006] In order to solve the problem that the fastening of the existing abrasive cloth wheel is completely realized by the nut pressing, the pressing plate and the nut on the angle grinder are prone to wear after being used for a period of time, resulting in insufficient pressing force and loose abrasive cloth wheel, the utility model provides a grinding wheel matrix, a through hole is arranged in the middle of the first connecting part and the second connecting part on the hole ring, forming the mounting hole on the base, the cross section of the mounting hole is polygonal, and the outer shape of the limiting boss on the pressing plate of the angle grinder is matched, avoiding the relative rotation of the base and the pressing plate, and reducing the wear and tear of the base, the pressing plate and the nut.

[0007] In order to achieve the above purpose, the technical scheme of the utility model is:

[0008] A grinding wheel base body, comprising a hole ring, an annular fixing surface and a mounting ring surface arranged from inside to outside in sequence, the hole ring comprising a first connecting part and a second connecting part fixedly connected, the axis of the first connecting part and the second connecting part coincides, a through hole is formed in the middle part of the first connecting part and the second connecting part, forming a mounting hole on the base body, the cross section of the mounting hole is a regular polygon. The mounting hole on the base body passes through the connecting shaft on the angle grinder to contact the pressing plate, the limiting protrusions on the upper side of the pressing plate cooperate with the mounting hole with the cross section of a regular polygon, avoiding relative rotation of the base body and the pressing plate.

[0009] Further, the outer side of the cross section of the first connecting part and the second connecting part is circular.

[0010] Further, the outer side of the cross section of the first connecting part is circular, and the diameter of the outer side of the cross section of the first connecting part is smaller than the diameter of the outer side of the cross section of the second connecting part.

[0011] Further, the first connecting part and the second connecting part are integrally formed.

[0012] Further, the second connecting part is located on the back of the base body. The back of the base body is provided with a convex-shaped groove for mounting the hole ring, and the end of the second connecting part can partially extend out of the groove or be flush with the groove.

[0013] Further, the end surface of the first connecting part away from the second connecting part is flush with the end surface of the inner side of the annular fixing surface.

[0014] Further, the bottom surface of the mounting ring surface has a height higher than the bottom surface of the hole ring. When the mounting ring surface is inclined downward, the bottom surface of the mounting ring surface has a height higher than the bottom surface of the hole ring, avoiding position interference between the abrasive cloth wheel and the angle grinder during polishing.

[0015] Further, the annular fixing surface is an arc surface, and the inner side of the arc surface is low and the outer side is high.

[0016] Further, the mounting ring surface is inclined or horizontally arranged.

[0017] Further, the base body is a disc body made of glass fiber.

[0018] Through the above technical scheme, the base body is provided with a convex-shaped groove for mounting the hole ring on the back, a through hole is formed in the middle part of the first connecting part and the second connecting part on the hole ring, and then a mounting hole is formed on the base body, the cross section of the mounting hole is a polygon, the mounting hole passes through the connecting shaft on the angle grinder to contact the pressing plate, the limiting protrusions on the upper side of the pressing plate cooperate with the mounting hole with the cross section of a regular polygon, avoiding relative rotation of the base body and the pressing plate, thereby reducing the wear and tear of the abrasive cloth wheel, the pressing plate and the nut, prolonging the service life of the abrasive cloth wheel and saving costs. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of a grinding wheel substrate according to the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of a grinding wheel base on which an abrasive blade is placed;

[0021] Figure 3 This is a schematic diagram of the structure of an abrasive wheel according to the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of the hole ring of the grinding wheel substrate according to the present invention. Figure 1 ;

[0023] Figure 5 This is a schematic diagram of the structure of the hole ring of the grinding wheel substrate according to the present invention. Figure 2 ;

[0024] Figure 6 This is a partial structural cross-sectional view of a grinding wheel base mounted on the connecting shaft of an angle grinder according to the present invention.

[0025] In the attached diagram, the following numbers are used: 1 is the base, 2 is the abrasive blade, 3 is the mounting hole, 4 is the connecting shaft, 5 is the pressure plate, 6 is the limiting boss, 7 is the nut, 8 is the fixing block, 11 is the hole ring, 111 is the first connecting part, 112 is the second connecting part, 12 is the annular fixing surface, and 13 is the mounting ring surface. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0027] like Figures 1-6 As shown, this embodiment provides a grinding wheel base, including a perforated ring 11, an annular fixing surface 12, and a mounting ring surface 13 arranged sequentially from the inside to the outside. The perforated ring 11 includes a first connecting part 111 and a second connecting part 112 fixedly connected, with the axes of the first connecting part 111 and the second connecting part 112 coinciding. A through hole is formed in the middle of the first connecting part 111 and the second connecting part 112, forming a mounting hole 3 on the base 1. The cross-section of the mounting hole 3 is a regular polygon; in this embodiment, the cross-section of the mounting hole 3 is a regular hexagon. The base 1 is a disc made of fiberglass mesh. The base 1 can also be made of metal or plastic.

[0028] refer to Figure 3 This embodiment also provides an abrasive wheel, which is formed by circumferentially bonding multiple abrasive blades 2 to a substrate 1. The abrasive blades 2 are circumferentially arranged on the mounting ring surface 13, and adjacent abrasive blades 2 partially cover each other to form a grinding section, which can effectively improve the strength of the abrasive wheel. The abrasive blades 2 are bonded to the substrate 1 by adhesive. The side of the substrate 1 where the abrasive blades 2 are bonded is the front side, and the other side is the back side.

[0029] refer to Figure 1 The annular fixing surface 12 is an arc surface, with the inner side lower and the outer side higher. When the mounting annular surface 13 is horizontally set, the height of the mounting annular surface 13 is higher than the height of the hole ring 11; when the outer side of the mounting annular surface 13 is tilted downward, the lowest height of the bottom surface of the mounting annular surface 13 is higher than the bottom surface of the hole ring 11. This ensures that the abrasive wheel will not interfere with the angle grinder during the grinding process.

[0030] refer to Figure 4 The outer sides of the cross-sections of both the first connecting portion 111 and the second connecting portion 112 are circular. The outer circular diameter of the cross-section of the first connecting portion 111 is smaller than the outer circular diameter of the cross-section of the second connecting portion 112. The first connecting portion 111 and the second connecting portion 112 are integrally formed. A convex groove for mounting the perforated ring 11 is provided on the back of the base 1, matching the shape of the perforated ring 11. The base 1 is directly fixed in the groove by adhesive. During fixing, the second connecting portion 112 is located on the back of the base 1, and the end face of the first connecting portion 111 away from the second connecting portion 112 is flush with the end face of the inner side of the annular fixing surface 12.

[0031] In another possible implementation, the outer side of the cross-section of the first connecting portion 111 may also be a regular polygon, such as... Figure 5 As shown, the outer side of the cross-section of the first connecting part 111 is a regular hexagon.

[0032] refer to Figure 6 This embodiment provides a general description of the components and connections on the connecting shaft 4 of the angle grinder: A fixing block 8 is fixed on the connecting shaft 4 of the angle grinder, and a pressure plate 5 is sleeved on the connecting shaft 4. The pressure plate 5 is located on the upper side of the fixing block 8 and is in contact with the fixing block 8. A limiting boss 6 is fixed on the upper side of the pressure plate 5. When fixing the abrasive wheel, the limiting boss 6 extends into the mounting hole 3 on the base body 1. The upper part of the connecting shaft 4 is provided with an external thread, and a nut 7 is screwed onto the connecting shaft 4 to fix the base body 1 between the nut 7 and the pressure plate 5. When the angle grinder is started, it drives the abrasive wheel to rotate, thereby driving the abrasive wheel to perform grinding.

[0033] In this embodiment, when the cross-section of the mounting hole 3 is a regular hexagon, the cross-section of the limiting boss 6 on the pressure plate 5 is also a regular hexagon. When the limiting boss 6 extends into the mounting hole 3, the limiting boss 6 and the mounting hole 3 limit each other, preventing the base 1 and the pressure plate 5 from rotating relative to each other, thereby reducing the wear and tear on the base 1, the pressure plate 5 and the nut 7.

[0034] The above-described embodiments are only preferred embodiments of the present application, and are not intended to limit the scope of the present application, so that equivalent changes or modifications made in the structure, features and principles described in the patent range of the present application should be included in the patent range of the present application.

Claims

1. A grinding wheel base body comprising, from the inside to the outside, a hole ring (11), an annular fixing surface (12), and a mounting ring surface (13), characterized in that, The hole ring (11) comprises a fixedly connected first connecting part (111) and a second connecting part (112), the axes of the first connecting part (111) and the second connecting part (112) coincide, a through hole is formed in the middle of the first connecting part (111) and the second connecting part (112) to form a mounting hole (3) on the base body (1), and the cross section of the mounting hole (3) is a regular polygon.

2. The grinding wheel body of claim 1, wherein The cross sections of the first connecting part (111) and the second connecting part (112) are both circular.

3. A grinding wheel body according to claim 2, wherein The outer side of the cross section of the first connecting part (111) is smaller in diameter than the outer side of the cross section of the second connecting part (112).

4. The grinding wheel body of claim 1 wherein, The first connecting part (111) and the second connecting part (112) are integrally formed.

5. The grinding wheel body of claim 1 wherein, The second connecting part (112) is located on the back of the base body (1).

6. The grinding wheel body of claim 1 wherein, The end face of the first connecting part (111) away from the second connecting part (112) is flush with the end face of the inner side of the annular fixing surface (12).

7. The grinding wheel body of claim 1 wherein, The bottom surface of the mounting ring surface (13) is higher than the bottom surface of the hole ring (11).

8. The grinding wheel body of claim 1 wherein, The annular fixing surface (12) is an arc surface, the inner side of the arc surface is low, and the outer side is high.

9. The grinding wheel body of claim 1 wherein, The mounting ring surface (13) is inclined or horizontally arranged.

10. The grinding wheel body of claim 1 wherein, The base body (1) is a disc body made of glass fiber.

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