Diamond grinding tool
By using a bent substrate and an orderly arrangement design, the problem of diamond grinding wheels easily floating and agglomerating during the brazing process is solved, achieving a long lifespan and efficient use of the grinding wheels, and avoiding frequent sharpening.
Patent Information
- Application Number
- CN202520390803.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-06
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-03-06
AI Technical Summary
In existing multi-layer diamond abrasives, the diamonds tend to float and agglomerate during the brazing process, resulting in uneven distribution, short service life, and the need for frequent sharpening.
The substrate uses a bent structure with solder holes 2/3 the size of a diamond. The bent side of the substrate is immersed in liquid solder, which allows the diamonds to automatically fit along the outer contour of the substrate and achieve an orderly arrangement. Through the staggered arrangement of multiple substrates, the diamonds are ensured to be exposed one after another.
It avoids diamond agglomeration, extends the service life of grinding tools, maintains the sharpness of diamond tools, reduces sharpening processes, and improves production efficiency.
Smart Images
Figure CN223834313U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of diamond tools, specifically a diamond abrasive. Background Technology
[0002] Diamond, due to its ultra-high hardness, good wear resistance, low coefficient of friction, and low coefficient of thermal expansion, is widely used for machining hard and brittle materials such as cemented carbide, engineering ceramics, and granite, making it an ideal material for manufacturing cutting tools. It is widely used in geological exploration, construction engineering, and other industries. In recent years, researchers both domestically and internationally have adopted a single-layer diamond brazing method to improve upon the shortcomings of traditional diamond tool manufacturing methods. The single-layer brazing method involves mixing diamond with a filler metal, applying it to the tool substrate, heating to melt the filler metal, and then cooling to form a strong intermetallic bond. Brazing creates a strong chemical-metallurgical bond between the diamond and the substrate, ensuring a firm embedding of the diamond particles. Furthermore, the diamond's edge projection can reach over 70%, significantly improving the tool's sharpness and chip clearance.
[0003] Compared to single-layer diamond tools, multi-layer diamond tools not only possess the advantages of single-layer brazed diamond tools, but also significantly improve service life and cutting efficiency. However, because the density of diamond is less than that of brazing material, diamond tends to float during the brazing process. This causes diamonds to agglomerate in the brazing material when the existing grinding wheel substrate is brazed, reducing its service life. Furthermore, existing multi-layer diamond grinding wheels become dull after a period of use, and the remaining diamonds cannot be exposed, requiring sharpening. In addition, the existing product structure may exhibit disordered diamond arrangement after brazing, resulting in irregular grinding positions and affecting the grinding performance of the grinding wheel. Utility Model Content
[0004] The purpose of this invention is to provide a diamond abrasive tool that utilizes a bending structure to allow the diamond to automatically fit into the welding holes along the outer contour of the substrate during the process of floating in the brazing filler metal. This prevents the diamond from agglomerating and allows the diamond to be arranged in an orderly manner according to the distribution of the welding holes. In addition, this structure allows the bottom diamonds to be exposed after the top layer of diamonds is ground off, eliminating the need for sharpening and ensuring the normal use of the abrasive tool.
[0005] To achieve the above objectives, this utility model employs the following technical solution:
[0006] A diamond abrasive tool includes at least one substrate, the substrate being a bent structure, a plurality of welding holes evenly spaced on the substrate, the welding holes being used for brazing diamonds, and the bent surface of the substrate being the working surface of the abrasive tool.
[0007] Furthermore, the size of the weld hole is 2 / 3 the size of a diamond.
[0008] Furthermore, when there are multiple substrates, the multiple substrates are sequentially and tightly nested together and brazed, and the welding holes between adjacent substrates are staggered.
[0009] Furthermore, the plurality of welding holes are evenly distributed along the circumferential bending contour line and the central axis of the substrate.
[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0011] This patent uses a substrate with a bent plate structure. During welding, the bent surface of the substrate is immersed in liquid brazing material, allowing the diamonds to automatically be caught and fitted into the welding holes along the inclined contour curve of the substrate as they float in the liquid brazing material. This prevents the diamonds from agglomerating after floating and ensures that the diamonds are arranged in an orderly manner according to the distribution of the welding holes, extending the service life of the grinding wheel and ensuring normal grinding use. In addition, the bent structure of the grinding wheel ensures that after the top layer of diamonds is ground off during the grinding process, the diamonds at the bottom of the layer are exposed, always maintaining sufficient diamond exposure to ensure the sharpness of the diamond tool and eliminate the need for sharpening, thus guaranteeing the normal use of the grinding wheel. Attached Figure Description
[0012] Appendix Figure 1 This is a schematic diagram of the structure of this utility model.
[0013] Appendix Figure 2 This is a top view of the structure of this utility model.
[0014] Appendix Figure 3 This is a front structural sectional view of the present invention.
[0015] Appendix Figure 4 This is a top view of the structure of this utility model after partial grinding.
[0016] Appendix Figure 5 This is a cross-sectional view of the structure of multiple substrates connected and brazed according to this utility model.
[0017] The labels shown in the attached diagram:
[0018] 1. Substrate; 2. Solder hole; 3. Bending surface; 4. Diamond. Detailed Implementation
[0019] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined in this application.
[0020] The wear resistance of diamond cutting tools is related to the degree of diamond aggregation. The more severe the diamond aggregation, the worse the wear resistance of the tool. This is because the aggregation of diamond particles results in a small effective bonding area between the diamond particles and the matrix solder, making the diamond particles prone to detachment and reducing the tool's wear resistance. On the other hand, the wear resistance of diamond cutting tools is related to the uniformity of diamond distribution. Generally, the more uniform the diamond distribution and the higher the diamond content, the better the wear resistance of the diamond cutting tool. This is because uniform diamond distribution means that the diamond particles are subjected to uniform force during use, and a high diamond particle content, i.e., appropriate spacing between diamond particles, prevents premature wear of the matrix solder and diamond particle detachment, thus affecting the tool's wear resistance.
[0021] This utility model describes a diamond abrasive tool. The main structure includes at least one substrate 1, which is a bent structure, similar to a tile. The substrate 1 is a thin steel plate, and its shape is not limited to square; it can be a square, rectangle, circle, ring, irregular shape, or other shapes. After being perforated, it is pressed into a bent structure with curved and raised sides. The bent substrate 1 can be an inverted triangle or an arc shape. The main body is a structure narrow at the bottom and wide at the top. Multiple welding holes 2 are evenly spaced on the substrate 1. The size of each welding hole 2 is 2 / 3 the size of a diamond. The welding holes 2 are used for brazing diamonds. The bent surface 3 of the substrate 1 is the working surface of the abrasive tool. During welding, the bent surface of the substrate 1 is immersed downwards in liquid brazing material, causing the diamond to float in the liquid brazing material. During the process, the diamond can be automatically held in place by the welding hole 2 along the outer contour curve of the substrate 1. Since the size of the welding hole 2 is 2 / 3 the size of the diamond, the diamond can fit into the welding hole 2. Specifically, during the diamond brazing process, the substrate 1 has a certain cooling effect on the surrounding brazing material. Therefore, the temperature of the brazing filler metal near the substrate 1 is relatively low, the viscosity of the brazing filler metal is high, and the resistance to the diamond's upward movement is high, making it less likely for the diamond to float. Thus, the diamond can slowly slide along the outer contour curve of the substrate 1 and be held in the welding hole 2. After the brazing filler metal cools, the diamond can be brazed into the welding hole 2, making it an integral part of the substrate 1. Utilizing the bending structure of the substrate 1, the diamond can be embedded into the welding hole along the curved surface, preventing the diamond from agglomerating after floating. It also allows the diamond to be arranged in an orderly manner according to the distribution of the welding hole 2, and as shown in the attached diagram... Figure 4 As shown, when the diamond on the top layer of the bent surface 3 is worn down by grinding, the substrate 1 will also be worn down by grinding. In addition, due to the bent contour structure of the substrate 1, the diamond on the next layer will be exposed, so that the diamonds can be connected one after another, or in other words, the diamonds can be automatically connected layer by layer, always keeping enough diamonds exposed. This way, there is no need to sharpen, saving time and effort.
[0022] As attached Figure 5As shown, preferably, when there are multiple substrates 1, the multiple substrates 1 are stacked tightly in sequence and brazed together, so that the multiple substrates 1 serve as a skeleton, and the welding holes 2 between adjacent substrates 1 are staggered to form a multi-layer abrasive. Compared with a single-layer abrasive, it can be used for a longer time and further extend its service life. During brazing, multiple substrates 1 can be placed into the brazing filler metal at the same time, so that the diamond enters from the gap between adjacent substrates 1 and is then embedded in the welding hole 2, thereby realizing the brazing of the diamond to the intermediate substrate 1.
[0023] Furthermore, the multiple welding holes 2 are evenly distributed along the circumferential bending contour line and the central axis of the substrate 1, so that the welded diamonds are also evenly distributed in multiple layers. This better enables the diamonds of the next layer to be exposed after the diamonds of the top layer are worn away by grinding, ensuring that the diamonds are connected one after another, or layer after layer of diamonds, saving the sharpening process time, improving efficiency, and reducing labor intensity.
[0024] This patent uses a bent plate-shaped substrate 1. During welding, the bent surface of the substrate 1 is immersed in liquid brazing material with the bent surface facing down. This allows the diamonds to float in the liquid brazing material and be automatically held and fitted into the welding holes 2 along the outer contour curve of the substrate 1. This not only prevents the diamonds from agglomerating after floating but also ensures that the diamonds are arranged in an orderly manner according to the distribution of the welding holes, extending the service life of the grinding wheel and ensuring normal grinding use. In addition, the bent structure of the grinding wheel ensures that after the top layer of diamonds is ground off during the grinding process, the diamonds at the bottom of the layer that has been ground off are exposed, always maintaining sufficient diamond exposure to ensure the sharpness of the diamond tool, thus eliminating the need for sharpening and improving production efficiency.
Claims
1. A diamond abrasive tool, characterized in that: It includes at least one substrate (1), the substrate (1) is a bent structure, and a plurality of welding holes (2) are evenly spaced on the substrate (1). The welding holes (2) are used for brazing diamonds, and the bent surface (3) of the substrate (1) is the working surface of the abrasive.
2. The diamond abrasive tool according to claim 1, characterized in that: The size of the weld hole (2) is 2 / 3 the size of a diamond.
3. The diamond abrasive tool according to claim 1, characterized in that: When there are multiple substrates (1), the multiple substrates (1) are sequentially and tightly fitted together and brazed, and the welding holes (2) between adjacent substrates (1) are staggered.
4. A diamond abrasive tool according to claim 1, characterized in that: The multiple welding holes (2) are evenly distributed along the circumferential bending contour line and the central axis of the substrate (1).