An ultra-high hardness abrasive disc

Abstract

The utility model relates to the field of grinding piece technology, concretely to a superhard grinding piece, including the grinding disc connected with the base disc below of base disc, the middle of base disc is equipped with the connecting cover, the upper surface of base disc is equipped with upper reinforcing plate, and a plurality of reinforcing rods are equipped between upper reinforcing plate and base disc, the superhard grinding piece is combined and fixed through the setting connecting cover and base disc, and under the cooperation of locating groove and fixed hole, the output shaft of external angle grinder is conveniently inserted and fixed, the grinding disc is cooperated with the base disc, reduces the damage and consumption to base disc when polishing, under the cooperation of upper reinforcing plate and reinforcing rod, the hardness and anti -deformation performance of base disc are increased, a plurality of heat dissipation holes are arranged, which helps the base disc to dissipate heat in time during polishing, reduces the influence of heat accumulation, and the convex block and the clamping groove are inserted and cooperated, the stability of the grinding disc and the base disc combination is increased, under the cooperation of a plurality of arc arrangement grinding grains, the wear resistance of polishing is increased, the service life is prolonged, frequent replacement is reduced, time waste and materials are occupied.

Description

Technical Field

[0001] This utility model relates to the field of grinding disc technology, specifically to a grinding disc with ultra-high hardness. Background Technology

[0002] Grinding discs are the core tools in grinding processes. They are used to cut, grind, polish, or fiber-treat materials through mechanical action. However, during high-speed grinding (such as angle grinder speed > 10000 r / min), high-hardness grinding discs can resist centrifugal force and impact load, avoiding abrasive grain splashing or matrix deformation. Ordinary hardness grinding discs are prone to plastic deformation under high pressure, resulting in loss of geometric accuracy. High-hardness grinding discs have a small contact area with the workpiece and a low coefficient of friction. High-hardness grinding discs reduce the impact of abrasive grain splashing on the surrounding environment. When high-hardness grinding discs are combined with an angle grinder, it is not easy to reduce the impact of the combination position on the object and reduce wear on the connecting parts. The overall grinding disc has a short service life and needs to be replaced frequently, which takes up time and wastes materials. Utility Model Content

[0003] The purpose of this invention is to provide a grinding disc with ultra-high hardness to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A grinding disc with ultra-high hardness includes a base disk and a grinding disc connected below the base disk. A connecting cover is provided in the middle of the base disk, an upper reinforcing plate is provided on the upper surface of the base disk, and a plurality of reinforcing rods are provided between the upper reinforcing plate and the base disk. The upper surface of the grinding disc is provided with several slots, and the lower surface of the grinding disc is provided with several arc-shaped grinding grains; The lower surface of the base plate has protrusions at the corresponding locations of the slots.

[0005] Furthermore, the connecting cover is hemispherical, and the connecting cover and the base plate are integrally formed. A positioning groove is provided in the middle of the inner wall of the connecting cover, and a number of fixing holes are provided in the middle of the positioning groove.

[0006] In this invention, with the help of the positioning groove, the output shaft of the angle grinder can easily pass through the fixing hole and extend into the positioning groove. The limiting block at the end of the output shaft of the angle grinder is inserted into the positioning groove. The end of the output shaft is fixed by screws, realizing the tight combination and installation of the limiting block and the connecting cover. Moreover, the hemispherical connecting cover is concave, which reduces the contact between the output shaft and the limiting block and external objects, and reduces the impact of contact wear and tear.

[0007] Specifically, the outer diameter of the grinding disc is adapted to the outer diameter of the base disc, the width of the inner wall of the slot is adapted to the width of the outer wall of the protrusion, the protrusions are distributed in a ring at equal intervals, the protrusions and the base disc are integrally formed, and the lower surface of the base disc is bonded and fixed to the upper surface of the grinding disc.

[0008] In this invention, the grinding disc is made of copper, cobalt and tin alloy to increase its hardness. Meanwhile, the bumps and the base are made of chromium oxide and the grinding particles are made of tungsten carbide to increase their wear resistance when grinding objects.

[0009] It should be noted that a number of heat dissipation holes are provided on the outer wall of the base plate. The heat dissipation holes penetrate into the interior of the connecting cover. The outer port of the heat dissipation hole is connected to the outer space of the base plate, and the inner port of the heat dissipation hole is connected to the interior space of the connecting cover.

[0010] In this invention, the combination of multiple heat dissipation holes helps to dissipate the heat generated during the high-speed rotation of the base plate. As the base plate continues to rotate, the heat dissipation holes penetrate the base plate, achieving rapid ventilation in the middle and timely dissipating the heat of the base plate to avoid the impact of heat accumulation.

[0011] Furthermore, the outer diameter of the upper reinforcing plate is adapted to the outer diameter of the base plate, the inner edge of the upper reinforcing plate is tightly fitted to the outer wall of the connecting cover, and the lower surface of the upper reinforcing plate is tightly fitted to and bonded to the upper surface of the base plate.

[0012] In this invention, the upper reinforcing plate is made of diamond to increase the hardness of the upper part of the base plate and fits tightly with the base plate to provide protection for the upper part of the base plate.

[0013] It is worth noting that the upper surface of the reinforcing rod is embedded in the lower surface of the upper reinforcing plate above the outer wall surface, and the lower surface of the reinforcing rod is embedded in the upper surface of the base plate below the outer wall surface. The reinforcing rod is also bonded and fixed to the corresponding base plate and upper reinforcing plate respectively.

[0014] In this invention, the reinforcing rod, in conjunction with the upper reinforcing plate and the base plate, increases the hardness, overall toughness, and resistance to deformation.

[0015] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model, by setting a connecting cover and fixing it together with the base plate, and with the cooperation of the positioning groove and the fixing hole, facilitates the corresponding insertion and fixing of the output shaft of the external angle grinder, protects the connection of the output shaft, and reduces the impact of contact with the grinding object. With the cooperation of the grinding disc and the base plate, the damage and consumption of the base plate during grinding is reduced. With the cooperation of the upper reinforcing plate and the reinforcing rod, the hardness and deformation resistance of the base plate are increased.

[0016] 2. By setting multiple heat dissipation holes, this utility model helps the base plate to dissipate heat in a timely manner during grinding, reducing the impact of heat accumulation. Furthermore, the engagement of the protrusions and slots increases the stability of the grinding disc and base plate combination. With multiple arc-shaped grinding grains working together, the wear resistance of grinding is increased, the service life is extended, and frequent replacements are reduced, thus saving time and materials. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a bottom view of the overall design of this utility model; Figure 3 This is a bottom view of the base plate of this utility model; Figure 4 This is a schematic diagram of the grinding disc structure of this utility model; Figure 5 This is a schematic diagram of the cross-sectional structure of the base plate of this utility model; Figure 6 This is a schematic diagram of the overall cross-sectional structure of this utility model.

[0018] The meanings of the labels in the diagram are as follows: 1. Base plate; 10. Protrusion; 11. Heat dissipation holes; 12. Upper reinforcing plate; 13. Reinforcing rod; 2. Connecting cover; 20. Positioning groove; 200. Fixing hole; 3. Grinding disc; 30. Slot; 31. Grinding grain. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figures 1-6 This embodiment provides a technical solution: A grinding disc with ultra-high hardness includes a base plate 1 and a grinding disc 3 connected below the base plate 1. A connecting cover 2 is provided in the middle of the base plate 1. The connecting cover 2 is hemispherical and is integrally formed with the base plate 1. A positioning groove 20 is provided in the middle of the inner wall of the connecting cover 2. Several fixing holes 200 are provided in the middle of the positioning groove 20.

[0021] In this utility model, with the cooperation of the positioning groove 20, it is convenient for the output shaft of the angle grinder to pass through the fixing hole 200 and extend into the positioning groove 20. The limiting block at the end of the output shaft of the angle grinder is inserted into the positioning groove 20. The end of the output shaft is fixed by screws, realizing the tight combination and installation of the limiting block and the connecting cover 2. Moreover, the hemispherical connecting cover 2 is concave, reducing the contact between the output shaft and the limiting block and external objects, reducing the impact of contact wear and consumption.

[0022] Furthermore, the upper surface of the base plate 1 is provided with an upper reinforcing plate 12, and a number of reinforcing rods 13 are provided between the upper reinforcing plate 12 and the base plate 1; the outer diameter of the upper reinforcing plate 12 is adapted to the outer diameter of the base plate 1, the inner edge of the upper reinforcing plate 12 is tightly fitted with the outer wall of the connecting cover 2, and the lower surface of the upper reinforcing plate 12 is tightly fitted with and bonded to the upper surface of the base plate 1.

[0023] In this utility model, the upper reinforcing plate 12 is made of diamond to increase the hardness of the upper part of the base plate 1 and fits tightly with the base plate 1 to provide protection for the upper part of the base plate 1.

[0024] Specifically, the upper surface of the reinforcing rod 13 is embedded in the lower surface of the upper reinforcing plate 12 above the outer wall surface, and the lower surface of the reinforcing rod 13 is embedded in the upper surface of the base plate 1 below the outer wall surface. The reinforcing rod 13 is bonded and fixed to the corresponding base plate 1 and upper reinforcing plate 12 respectively.

[0025] In this invention, the reinforcing rod 13, in conjunction with the upper reinforcing plate 12, increases the hardness of the base plate 1, increases the overall toughness, and enhances the resistance to deformation.

[0026] It should be noted that the upper surface of the grinding disc 3 is provided with several slots 30, and the lower surface of the grinding disc 3 is provided with several arc-shaped grinding grains 31; the lower surface of the base plate 1 is provided with protrusions 10 corresponding to the slots 30; the outer diameter of the grinding disc 3 is adapted to the outer diameter of the base plate 1, the width of the inner wall of the slot 30 is adapted to the width of the outer wall of the protrusion 10, the protrusions 10 are distributed in a ring at equal intervals, the protrusions 10 and the base plate 1 are integrally formed, and the lower surface of the base plate 1 is bonded and fixed to the upper surface of the grinding disc 3.

[0027] In this utility model, the grinding disc 3 is made of copper, cobalt and tin alloy to increase the hardness of the grinding disc 3. At the same time, the bump 10 and the base disc 1 are both made of chromium oxide material, and the grinding particles 31 are made of tungsten carbide material to increase the wear resistance when grinding in contact with the object.

[0028] It is worth adding that a number of heat dissipation holes 11 are provided on the outer wall of the base plate 1. The heat dissipation holes 11 penetrate into the interior of the connecting cover 2. The outer port of the heat dissipation hole 11 is connected to the outer space of the base plate 1, and the inner port of the heat dissipation hole 11 is connected to the interior space of the connecting cover 2.

[0029] In this invention, the combination of multiple heat dissipation holes 11 increases the heat dissipation generated by the grinding of the base plate 1 during high-speed rotation. As the base plate 1 continues to rotate, the heat dissipation holes 11 penetrate the base plate 1, achieving rapid ventilation in the middle and timely dissipating the heat of the base plate 1 to avoid the impact of heat accumulation.

[0030] In this embodiment, when using the ultra-high hardness grinding disc, firstly, the connecting cover 2 with fixing holes 200 and positioning grooves 20 is combined and fixed with the base plate 1 with heat dissipation holes 11. Then, the grinding disc 3 with abrasive grains 31 is inserted into the lower surface of the base plate 1 through the slot 30 and the protrusion 10, and is bonded and fixed with the corresponding epoxy resin adhesive. Then, multiple reinforcing rods 13 are installed between the upper reinforcing plate 12 and the base plate 1, and the upper reinforcing plate 12 and the grinding disc 3 are bonded and fixed with epoxy resin adhesive. When it needs to be combined with the output shaft of an external angle grinder, the corresponding output shaft is inserted into the corresponding fixing hole 200 from the top outer wall of the connecting cover 2 and extends into the positioning groove 20. The limiting block at the end of the output shaft is inserted and engaged with the output shaft, and the limiting block is inserted and engaged with the positioning groove 20. The limiting block and the connecting cover 2 are fixed with screws to increase the stability of the combination. The connecting cover 2 is concave to prevent the object from contacting the output shaft when grinding, thus avoiding wear and tear. When the base plate 1 rotates at high speed, the cooperation of multiple heat dissipation holes 11 helps to ventilate and dissipate heat in the middle of the base plate 1, and dissipates the heat generated by grinding in time to avoid heat accumulation. The cooperation of the upper reinforcing plate 12 and the reinforcing rod 13 increases the overall resistance to deformation, and with the cooperation of the grinding disc 3, it reduces grinding damage and extends the overall service life.

Claims

1. A grinding disc with ultra-high hardness, comprising a base disk (1) and a grinding disc (3) connected below the base disk (1), characterized in that: The base plate (1) is provided with a connecting cover (2) in the middle, and an upper reinforcing plate (12) is provided on the upper surface of the base plate (1). Several reinforcing rods (13) are provided between the upper reinforcing plate (12) and the base plate (1). The upper surface of the grinding disc (3) is provided with several slots (30), and the lower surface of the grinding disc (3) is provided with several arc-shaped grinding grains (31). The lower surface of the base plate (1) is provided with a protrusion (10) corresponding to the slot (30).

2. The ultra-high hardness grinding disc according to claim 1, characterized in that: The connecting cover (2) is hemispherical and the base plate (1) are integrally formed. A positioning groove (20) is provided in the middle of the inner wall of the connecting cover (2), and a number of fixing holes (200) are provided in the middle of the positioning groove (20).

3. The ultra-high hardness grinding disc according to claim 1, characterized in that: The outer diameter of the grinding disc (3) is adapted to the outer diameter of the base disc (1), the width of the inner wall of the slot (30) is adapted to the width of the outer wall of the protrusion (10), the protrusion (10) is distributed in a ring with equal spacing, the protrusion (10) and the base disc (1) are integrally formed, and the lower surface of the base disc (1) is bonded and fixed to the upper surface of the grinding disc (3).

4. The ultra-high hardness grinding disc according to claim 1, characterized in that: The base plate (1) has several heat dissipation holes (11) on its outer wall. The heat dissipation holes (11) penetrate into the interior of the connecting cover (2). The outer port of the heat dissipation hole (11) is connected to the outer space of the base plate (1), and the inner port of the heat dissipation hole (11) is connected to the interior space of the connecting cover (2).

5. The ultra-high hardness grinding disc according to claim 1, characterized in that: The outer diameter of the upper reinforcing plate (12) is adapted to the outer diameter of the base plate (1). The inner edge of the upper reinforcing plate (12) is tightly fitted to the outer wall of the connecting cover (2). The lower surface of the upper reinforcing plate (12) is tightly fitted to the upper surface of the base plate (1) and bonded and fixed.

6. The ultra-high hardness grinding disc according to claim 1, characterized in that: The reinforcing rod (13) is embedded above the outer wall surface of the upper reinforcing plate (12) and below the outer wall surface of the reinforcing rod (13) is embedded above the base plate (1). The reinforcing rod (13) is bonded and fixed to the corresponding base plate (1) and upper reinforcing plate (12) respectively.

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