Anti-skid high self-sharpening metal grinding disc

Abstract

The application provides an anti-skid high-self-sharpening metal grinding disc, which comprises an upper disc, a lower disc, a first grinding block, a second grinding block and a heat dissipation assembly. The first block and the second block are made of high-self-sharpening metal material, and are combined with the first composite grinding lines and the second composite grinding lines of the grinding surface, so that the contact area with the material is greatly increased. In the heat dissipation assembly, the first heat dissipation strip and the second heat dissipation strip correspond to the heat conducted by the first block and the second block. A plurality of groups of concentrically nested heat dissipation rings are used for layered heat dissipation according to the temperature gradient from the center to the edge of the lower disc, so that the heat accumulation problem caused by the lack of heat dissipation means of the existing grinding disc is effectively solved. The heat dissipation holes penetrating through the adjacent first heat dissipation strips at the bottom of the lower disc to the top end of the upper disc form negative pressure due to centrifugal force when the grinding disc rotates at high speed. The cold air can be sucked into the high-temperature working area at the top end of the upper disc to assist heat dissipation, and the impurities generated during grinding can be discharged together with the air flow and the action of gravity, so that the influence of impurity accumulation on grinding precision and additional heat generation is avoided.

Description

Technical Field

[0001] This application relates to the field of grinding disc technology, and in particular to a non-slip, highly self-sharpening metal grinding disc. Background Technology

[0002] Anti-slip, high self-sharpening metal grinding discs, with their gradient distribution design of metal matrix and hard phase, can automatically expose new cutting edges during grinding, eliminating the need for frequent re-sharpening. They have been widely used in stone processing, concrete grinding and other fields. The existing technology has the following problems: The surface of the grinding blocks installed on the existing grinding disc is mostly smooth or has a simple striped structure. During high-speed grinding, the static friction between the grinding blocks and smooth, wet or irregular materials is insufficient, which makes it easy to slip, resulting in a decrease in grinding accuracy, equipment vibration or even material splashing. It can also cause excessive wear of the grinding blocks in some areas, shortening their service life. Furthermore, the grinding blocks lack heat dissipation methods during grinding. The heat generated by friction cannot be dissipated, and the accumulation of heat will reduce the hardness of the grinding block matrix, weaken its self-sharpening performance, and may also cause heat-sensitive materials to carbonize and deform, accelerating the aging of equipment connection parts. Utility Model Content

[0003] The purpose of this invention is to provide a non-slip, highly self-sharpening metal grinding disc to solve the above-mentioned problems.

[0004] The technical solution of this application is implemented as follows: This application provides a non-slip, highly self-sharpening metal grinding disc, including an upper disc, a lower disc fixedly connected to the bottom of the upper disc, first grinding blocks spaced circumferentially at the top of the upper disc, second grinding blocks spaced circumferentially at the edge of the top of the upper disc, avoiding the positions of the first grinding blocks, and a heat dissipation component fixedly installed at the bottom of the lower disc; The first grinding block includes a first block body, which is circumferentially spaced at the top of the upper disk. The grinding surface of the first block body is provided with a first composite grinding pattern, which is composed of a first main grinding pattern and a first auxiliary grinding pattern. The second grinding block includes a second block body, which is circumferentially distributed at intervals on the top edge of the upper plate and is installed in a position that avoids the first block body. The grinding surface of the second block body is provided with a second composite grinding pattern, which is composed of a second main grinding pattern and a second auxiliary grinding pattern.

[0005] In one embodiment, the first main grinding texture is a spiral structure that extends radially towards the edge from the center of the first block grinding surface, and the depth of the first main grinding texture gradually decreases from the center to the edge along its extension direction. The first auxiliary grinding texture is a mesh structure, distributed on the edge area of ​​the first block grinding surface and intersecting with the first main grinding texture, and the depth of the first auxiliary grinding texture is less than the depth of the first main grinding texture.

[0006] In one embodiment, the spiral parameters and depth variation patterns of the first main grinding pattern and the second main grinding pattern are the same, and the grid size and depth parameters of the first auxiliary grinding pattern and the second auxiliary grinding pattern are the same.

[0007] In one embodiment, the heat dissipation assembly includes a first heat dissipation strip, a second heat dissipation strip, and a heat dissipation ring. The first heat dissipation strip is correspondingly protruded at the bottom of the lower plate opposite to the first block, the second heat dissipation strip is correspondingly protruded at the bottom of the lower plate opposite to the second block, and the heat dissipation ring is concentrically protruded at the center of the bottom of the lower plate.

[0008] In one embodiment, a heat dissipation hole is formed through the bottom of the lower plate and between two adjacent first heat dissipation strips, and the heat dissipation hole extends through to the top of the upper plate.

[0009] In one embodiment, the heat dissipation rings are provided in several groups, and each group of heat dissipation rings is arranged in a concentric nested ring shape, and is arranged sequentially from the center to the edge of the bottom of the lower plate.

[0010] The advantages or beneficial effects of the above technical solutions include at least the following: This application discloses a non-slip, high self-sharpening metal grinding disc, wherein the first and second blocks are made of high self-sharpening metal material, and combined with the first and second composite grinding textures on the grinding surface, the contact area with the material and the static friction are greatly increased, effectively solving the slippage problem caused by insufficient static friction during high-speed grinding, avoiding the decrease in grinding accuracy, equipment vibration and material splashing, while preventing excessive wear of the grinding block in some areas, extending the service life of the grinding block, and the second block is made of the same material and has the same texture parameters as the first block, which not only fills the grinding and anti-slip blind area of ​​the first block at the edge, but also ensures the uniformity of material grinding accuracy and anti-slip effect; In the heat dissipation component, the first and second heat dissipation strips correspond one-to-one to receive the heat conducted by the first and second blocks. Several sets of concentric nested heat dissipation rings dissipate heat in layers according to the temperature gradient from the center to the edge of the lower plate, effectively solving the problem of heat accumulation caused by the lack of heat dissipation means in the existing grinding disc, avoiding the decrease in hardness of the grinding block matrix and the weakening of self-sharpening performance, while protecting heat-sensitive materials from carbonization and deformation, and delaying the aging of the equipment connection parts. The heat dissipation holes that run from the bottom of the lower plate to the top of the upper plate through the adjacent first heat dissipation strip create negative pressure due to centrifugal force when the grinding disc rotates at high speed. This not only draws in cool air to reach the high-temperature working area at the top of the upper plate to assist in heat dissipation, but also removes impurities such as metal chips and stone powder generated during grinding with the airflow and gravity, thus avoiding the accumulation of impurities that affect grinding accuracy and generate additional heat. Attached Figure Description

[0011] The accompanying drawings illustrate exemplary embodiments of the present application and, together with the description thereof, serve to explain the principles of the present application. These drawings are included to provide a further understanding of the present application and are incorporated in and constitute a part of this specification.

[0012] Figure 1 A schematic diagram of the overall structure of an embodiment of this application is shown; Figure 2 A schematic diagram of the structure of the first grinding block according to an embodiment of this application is shown; Figure 3 A schematic diagram of the structure of the second grinding block according to an embodiment of this application is shown; Figure 4 A schematic diagram of the heat dissipation assembly according to an embodiment of this application is shown; Reference numerals: Upper plate-1, Lower plate-2, First grinding block-3, Second grinding block-4, Heat dissipation component-5, First block-31, First main grinding pattern-32, First auxiliary grinding pattern-33, Second block-41, Second main grinding pattern-42, Second auxiliary grinding pattern-43, First heat dissipation strip-51, Second heat dissipation strip-52, Heat dissipation ring-53, Heat dissipation hole-54. Detailed Implementation

[0013] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While some embodiments of this application are shown in the drawings, it should be understood that this application can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this application. It should be understood that the drawings and embodiments of this application are for illustrative purposes only and are not intended to limit the scope of protection of this application.

[0014] It should be noted that, where there is no conflict, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0015] It should be understood that the term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc., mentioned in this application are used only to distinguish different devices, modules, or units, and are not intended to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0016] It should be noted that the terms "a" and "several" used in this application are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0017] The names of the messages or information exchanged between multiple devices in the embodiments of this application are for illustrative purposes only and are not intended to limit the scope of these messages or information.

[0018] Reference Figure 1 A non-slip, high self-sharpening metal grinding disc includes an upper disc 1, which serves as the main bearing base for the grinding blocks and provides an mounting surface for the first grinding block 3 and the second grinding block 4. At the same time, through the layout design of the circumferentially spaced distribution, it avoids interference between different grinding blocks during grinding and allows the grinding blocks to be evenly stressed, ensuring the stability of the grinding process.

[0019] The bottom of the upper plate 1 is fixedly connected to the lower plate 2 by welding. The lower plate 2 is fixedly connected to the upper plate 1 to form the overall structure of the grinding disc, which enhances the grinding disc's resistance to deformation during high-speed grinding and serves as the mounting carrier for the heat dissipation component 5, realizing the transition of heat conduction.

[0020] The top of the upper plate 1 has first grinding blocks 3 distributed circumferentially. The first grinding blocks 3 are the main grinding components of the grinding plate, used to grind materials. At the same time, the special design of the grinding surface achieves anti-slip and prevents materials from slipping during high-speed grinding.

[0021] The upper plate 1 has a second grinding block 4 distributed circumferentially at the top edge and away from the position of the first grinding block 3. The second grinding block 4 is used to fill the grinding and anti-slip blind area of ​​the first grinding block 3 at the edge, so as to avoid the workpiece edge from slipping due to the lack of anti-slip texture and ensure the uniform anti-slip effect during material grinding.

[0022] A heat dissipation component 5 is fixedly installed at the bottom of the lower plate 2. The heat dissipation component 5 is used to quickly dissipate the heat generated during the grinding process to prevent high temperature from affecting the performance of the grinding plate and the quality of the material.

[0023] In one embodiment, reference is made to Figures 2-3 The first grinding block 3 includes a first block 31, which is circumferentially spaced at the top of the upper plate 1. The first block 31 serves as the grinding component of the grinding disc and is used to grind the main area of ​​the material. In this embodiment, the first block 31 is made of a highly self-sharpening metal material, which can automatically expose new cutting points as the cutting edge wears during the grinding process, without the need for frequent re-grinding. It is also circumferentially spaced and fixed at the top of the upper plate 1 by welding.

[0024] The grinding surface of the first block 31 is provided with a first composite grinding pattern, which is composed of a first main grinding pattern 32 and a first auxiliary grinding pattern 33. The first main grinding pattern 32 and the first auxiliary grinding pattern 33 are used to increase the frictional contact area with the material and solve the problem of slippage on the surface of traditional grinding blocks.

[0025] Meanwhile, the first main grinding pattern 32 and the first auxiliary grinding pattern 33 can also optimize the movement trajectory and contact mode of the material on the grinding surface of the first block 31, reduce material accumulation, improve grinding uniformity, and assist the first block 31 in achieving efficient grinding. The second grinding block 4 includes a second block 41, which is circumferentially distributed at intervals on the top edge of the upper plate 1 and is installed in a position that avoids the first block 31. The second block 41 fills the grinding blind area of ​​the first grinding block 3 at the edge to ensure the grinding effect. In this embodiment, the second block 41 is made of the same material as the first block 31, both of which are made of highly self-sharpening metal. They are also fixedly distributed circumferentially at intervals on the top edge of the upper plate 1, avoiding the position of the first block 31, by welding.

[0026] The grinding surface of the second block 41 is provided with a second composite grinding pattern. The second composite grinding pattern is composed of a second main grinding pattern 42 and a second auxiliary grinding pattern 43. The function and structure of the second main grinding pattern 42 and the second auxiliary grinding pattern 43 are the same as those of the first main grinding pattern 32 and the first auxiliary grinding pattern 33. They are used to assist the second block 41 in achieving anti-slip and efficient grinding, so they will not be described in detail.

[0027] In one embodiment, reference is made to Figures 2-3 The first main grinding texture 32 has a spiral structure, starting from the center of the grinding surface of the first block 31 and extending radially towards the edge, and the depth of the first main grinding texture 32 gradually decreases from the center to the edge along its extension direction. The first main grinding groove 32 has a spiral structure, which can greatly increase the contact area with the material. Compared with a smooth surface or simple stripes, the contact area of ​​the spiral groove can be increased by 30%-50%. By increasing the static friction, it can prevent the material from sliding relative to the groove surface during high-speed grinding. The first main grinding groove 32 is designed to extend radially to the edge from the center of the first block 31. This design can guide the material to move smoothly along the groove trajectory and reduce the risk of slippage caused by disordered sliding. The design of the first main grinding groove 32, with its depth gradually decreasing from the center to the edge along the extension direction, ensures that the material is always in close contact with the groove wall during movement, further enhancing frictional resistance. At the same time, the transition from deep groove to shallow groove achieves the progression from initial anti-slip guidance to deep anti-slip grinding, preventing the material from spinning idly and avoiding the material from rotating synchronously with the grinding disc.

[0028] The first auxiliary grinding texture 33 has a mesh structure, is distributed on the edge area of ​​the grinding surface of the first block 31 and intersects with the first main grinding texture 32, and the depth of the first auxiliary grinding texture 33 is less than the depth of the first main grinding texture 32. The first auxiliary grinding texture 33, through its mesh structure design, can fill the gaps between the first main grinding textures 32, forming a cross anti-slip structure that prevents materials from getting stuck in the gaps between the main textures and slipping. Furthermore, by intersecting with the first main grinding pattern 32, cross grinding marks can be formed on the material surface, further increasing frictional resistance and significantly reducing the probability of material slippage; The design that its depth is less than that of the first main grinding texture 32 can ensure that the first auxiliary grinding texture 33 plays an anti-slip role, while not interfering with the first main grinding texture 32's dominant guidance of the material, thus avoiding material jamming or slipping due to the conflict of texture heights.

[0029] Among them, the spiral parameters and depth variation patterns of the first main grinding texture 32 and the second main grinding texture 42 are the same; The first main grinding texture 32 and the second main grinding texture 42 have the same spiral parameters, which allows the material to move along the same trajectory in the center and edge areas, avoiding the smooth movement of the material in the center and the jamming and displacement of the material at the edge due to the difference in trajectory. A consistent depth variation pattern allows the material to withstand the same grinding pressure from deep to shallow in different areas, preventing over-cutting in the center and insufficient grinding at the edges. It also ensures uniform grinding accuracy on the workpiece surface, avoiding problems such as a smooth center, rough edges, and local dimensional deviations.

[0030] The first auxiliary abrasive texture 33 and the second auxiliary abrasive texture 43 have the same grid size and depth parameters; The first auxiliary grinding texture 33 and the second auxiliary grinding texture 43 have the same mesh size, which can form cross anti-slip nodes with consistent density in the center and edge areas, avoiding material jamming due to excessively dense mesh or insufficient anti-slip due to excessively sparse mesh in a certain area; Having the same depth parameters ensures a uniform height difference between the auxiliary and main textures, allowing materials in both the center and edge areas to form stable frictional contact with both the main and auxiliary grinding textures. This prevents slippage at the edges due to shallow auxiliary grinding textures, and avoids interference with the main texture guidance at the center due to excessively deep auxiliary grinding textures, thus guaranteeing the anti-slip stability of the workpiece during high-speed grinding.

[0031] In one embodiment, reference is made to Figure 4The heat dissipation component 5 includes a first heat dissipation strip 51, a second heat dissipation strip 52, and a heat dissipation ring 53. The first heat dissipation strip 51 is correspondingly protruded at the bottom of the lower plate 2 and opposite to the first block 31. The heat generated by the friction between the first block 31 and the material during grinding will be conducted to the lower plate 2 through the upper plate 1. The first heat dissipation strip 51 can directly receive the heat conducted to the lower plate 2 by the first block 31. By protruding, the contact area with the air is increased, and the heat is quickly dissipated to the outside, so as to avoid the first block 31 from becoming less hard and its self-sharpening performance deteriorated due to heat accumulation. In this embodiment, the first heat sink 51 is integrally cast and protrudes from the bottom of the lower plate 2 at a position opposite to the first block 31. When the lower plate 2 is cast using a casting process, the structure of the first heat sink 51 is pre-embedded in the casting mold, so that the lower plate 2 and the first heat sink 51 are cast in one piece.

[0032] The second heat dissipation strip 52 is protruding from the bottom of the lower plate 2 and opposite to the second block 41. The grinding range of the second block 41 is concentrated at the edge. High-speed grinding will generate local high temperature. The heat generated will be conducted to the lower plate 2 through the second block 41 and received by the second heat dissipation strip 52 to ensure that the heat can be effectively dissipated and to avoid premature wear of the block due to insufficient heat dissipation in the edge area. In this embodiment, the second heat dissipation strip 52 is also integrally cast and protrudes from the bottom of the lower plate 2 at a position opposite to the second block 41.

[0033] The heat dissipation ring 53 is concentrically protruding at the center of the bottom of the lower plate 2. The heat dissipation ring 53 is used to dissipate the heat in the central area of ​​the bottom of the lower plate 2. In this embodiment, the heat dissipation ring 53 is also integrally cast and concentrically protruded at the bottom center of the lower plate 2.

[0034] Among them, the heat dissipation ring 53 is provided in several groups, and each group of heat dissipation ring 53 is distributed in a concentric ring nested distribution, and is arranged sequentially from the center to the edge of the bottom of the lower plate 2. When the grinding disc is working, the central area has the highest temperature because it is close to the spindle connection and the heat of the first block 31 tends to accumulate in the center. Several sets of heat dissipation rings 53 are arranged sequentially from the center to the edge to cover different temperature areas. The innermost heat dissipation ring 53 directly corresponds to the area with the highest temperature in the lower plate 2, and quickly dissipates the accumulated heat through the dense ring structure; the outer heat dissipation ring 53 covers the outer area with a lower temperature, forming a mode of strong heat dissipation in the high temperature area and auxiliary heat dissipation in the low temperature area together with the inner heat dissipation ring 53.

[0035] In one embodiment, reference is made to Figure 4A heat dissipation hole 54 is formed through the bottom of the lower plate 2 and between the two adjacent first heat dissipation strips 51. The heat dissipation hole 54 extends through to the top of the upper plate 1, and the position of the heat dissipation hole 54 also avoids the installation position of the first block 31 and the second block 41 on the upper plate 1. When the grinding disc rotates at high speed, the heat dissipation holes 54 at the bottom of the lower disc 2 will form a negative pressure due to centrifugal force, drawing in cold air from the bottom of the lower disc 2. The cold air will then travel upwards along the holes to the top of the upper disc 1. The cold air can directly contact the high-temperature area near the first block 31 and quickly carry away the heat generated by grinding. Furthermore, during the grinding process, the grinding disc will produce impurities such as metal shavings and stone powder, which are easy to accumulate in the gap of the first block 31 at the top of the upper disc 1. This not only affects the grinding accuracy but also generates additional heat due to friction. The through heat dissipation hole 54 allows these impurities to fall from the top into the channel and be discharged from the bottom of the lower disc 2 with the air flow and gravity, reducing the interference of impurity accumulation on grinding.

[0036] Working principle: The first block 31, which is circumferentially spaced at the top of the upper plate 1, serves as the main grinding component. It is made of a highly self-sharpening metal material. During grinding, it automatically exposes new cutting points as the cutting edge wears down to maintain grinding capability. In the first composite grinding pattern on its grinding surface, the spiral first main grinding pattern 32 extends from the center to the edge with decreasing depth. This greatly increases the contact area with the material to increase static friction and prevent slippage, and guides the material to move smoothly along the trajectory. The mesh-like first auxiliary grinding pattern 33 fills the gaps between the main patterns to form a cross anti-slip structure, further preventing the material from getting stuck or slipping. The top edge of the upper plate 1 avoids the second block 41 distributed on the first block 31. The second composite grinding pattern is the same as the first block 31 with the same high self-sharpening material and structure, filling the edge grinding and anti-slip blind area of ​​the second block 41. Since the pattern parameters of the first block 31 and the second block 41 are the same, it can ensure that the workpiece grinding accuracy and anti-slip effect are consistent. In the heat dissipation component 5 at the bottom of the lower plate 2, the first heat dissipation strip 51 and the second heat dissipation strip 52 are respectively protruding from the bottom of the lower plate 2 opposite to the first block 31 and the second block 41, which can directly receive and dissipate the heat conducted by the grinding block. Several sets of heat dissipation rings 53 are used to dissipate heat in layers according to the temperature gradient from the center to the edge of the lower plate 2. Meanwhile, the heat dissipation holes 54 that extend from the bottom of the lower plate 2 to the top of the upper plate 1 through the adjacent first heat dissipation strip 51 can draw in cold air from the bottom of the lower plate 2 and directly reach the high-temperature working area at the top of the upper plate 1 to assist in heat dissipation when the grinding disc rotates at high speed due to the centrifugal force to form a negative pressure. In addition, they can allow impurities such as metal chips and stone powder generated during grinding to be discharged from the holes with the air flow and gravity, avoiding the accumulation of impurities that affect the grinding accuracy and generate additional heat.

[0037] In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0038] Those skilled in the art should understand that the above embodiments are merely for illustrative purposes and are not intended to limit the scope of this application. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of this application.

Claims

1. A non-slip, highly self-sharpening metal grinding disc, characterized in that: The upper plate (1) is fixedly connected to the bottom of the upper plate (1), and the top of the upper plate (1) is provided with first grinding blocks (3) spaced apart circumferentially. The top edge of the upper plate (1) is provided with second grinding blocks (4) spaced apart circumferentially, avoiding the position of the first grinding blocks (3). The bottom of the lower plate (2) is fixedly installed with a heat dissipation component (5). The first grinding block (3) includes a first block (31), which is circumferentially distributed at the top of the upper plate (1). The grinding surface of the first block (31) is provided with a first composite grinding pattern, which is composed of a first main grinding pattern (32) and a first auxiliary grinding pattern (33). The second grinding block (4) includes a second block (41), which is circumferentially distributed at intervals on the top edge of the upper plate (1) and is installed in a position that avoids the first block (31). The grinding surface of the second block (41) is provided with a second composite grinding pattern, which is composed of a second main grinding pattern (42) and a second auxiliary grinding pattern (43).

2. The anti-slip, high self-sharpening metal grinding disc according to claim 1, characterized in that: The first main grinding texture (32) is a spiral structure, starting from the center of the grinding surface of the first block (31) and extending radially to the edge, and the depth of the first main grinding texture (32) gradually decreases from the center to the edge along its extension direction; The first auxiliary grinding texture (33) is a mesh structure, distributed on the edge area of ​​the grinding surface of the first block (31) and intersecting with the first main grinding texture (32), and the depth of the first auxiliary grinding texture (33) is less than the depth of the first main grinding texture (32).

3. The anti-slip, high self-sharpening metal grinding disc according to claim 2, characterized in that: The spiral parameters and depth variation patterns of the first main grinding pattern (32) and the second main grinding pattern (42) are the same, and the grid size and depth parameters of the first auxiliary grinding pattern (33) and the second auxiliary grinding pattern (43) are the same.

4. The anti-slip, high self-sharpening metal grinding disc according to claim 1, characterized in that: The heat dissipation component (5) includes a first heat dissipation strip (51), a second heat dissipation strip (52), and a heat dissipation ring (53). The first heat dissipation strip (51) is protruding one-to-one from the bottom of the lower plate (2) opposite to the first block (31). The second heat dissipation strip (52) is protruding one-to-one from the bottom of the lower plate (2) opposite to the second block (41). The heat dissipation ring (53) is concentrically protruding from the middle of the bottom of the lower plate (2).

5. The anti-slip, high self-sharpening metal grinding disc according to claim 4, characterized in that: The bottom of the lower plate (2) and the two adjacent first heat dissipation strips (51) are formed with heat dissipation holes (54), which extend through to the top of the upper plate (1).

6. The anti-slip, high self-sharpening metal grinding disc according to claim 4, characterized in that: The heat dissipation rings (53) are provided in several groups, and each group of heat dissipation rings (53) is arranged in a concentric ring nested distribution, and arranged sequentially from the center to the edge of the bottom of the lower plate (2).

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