Segmented metal-based tool bit grinding disc with orderly arranged diamonds

Abstract

The utility model discloses a segment type metal-based tool bit millstone with orderly distributed diamonds, which belongs to the technical field of superhard material grinding tools and comprises a disc-shaped base body and a plurality of metal-based tool bits which are arranged on the disc-shaped base body and are uniformly distributed along the circumferential direction of the disc-shaped base body at intervals. Wherein the metal-based tool bit is of an arc-shaped segment type structure matched with the shape of the disc-shaped base body, a plurality of diamond layers are evenly laid in the metal-based tool bit in the radial direction of the metal-based tool bit at intervals, and each diamond layer comprises a plurality of columns of diamond particles which are evenly distributed at intervals. The diamond particles are orderly arranged on the cambered surface; and the top surface of the metal-based tool bit is a grinding surface with a groove structure. The grinding sharpness can be effectively improved, the grinding operation intensity can be reduced, and the structure of the grinding surface can be optimized.

Description

Technical Field

[0001] This utility model belongs to the technical field of grinding tools for superhard materials, and specifically relates to a segmented metal-based grinding disc with diamonds arranged in an orderly manner. Background Technology

[0002] Metal-based grinding discs are disc-type grinding tools used with power tools. They consist of a disc-shaped base and several arc-shaped segmented metal-based cutting heads. These segmented cutting heads are evenly spaced along the circumference of the disc-shaped base and fixed to it by welding or sintering. These grinding discs are mainly used for high-speed rotary grinding of the working surface of workpieces to achieve a smooth or bright finish. Currently, the cutting heads of metal-based grinding discs used for surface grinding are made by pressing a mixture of metal powder and diamond particles into a green blank, which is then sintered under high temperature and pressure.

[0003] However, during the manufacturing process of the cutting head, after the metal powder and diamond particles are mixed, the diamond particles are arranged randomly within the metal powder. When the outer arc surface of the metal-based cutting head, i.e., the arc surface near the outer edge of the disc-shaped substrate, is sharpened, the diamonds are exposed in a disordered manner. This disordered diamond arrangement leads to diamond aggregation or segregation in the cutting head during operation, resulting in low diamond utilization. This not only causes a decrease in the sharpness of the grinding disc and poor grinding effect during grinding, but also increases the grinding intensity and reduces efficiency due to insufficient roughness of the grinding surface. Furthermore, the existing grinding discs have a simple cutting head structure and weak chip removal capability, making them prone to wear or substrate deformation due to high temperatures during prolonged operation.

[0004] Therefore, there is a need for a segmented metal-based grinding head that can improve grinding sharpness, reduce grinding intensity, and optimize the orderly arrangement of diamonds in the grinding surface. Utility Model Content

[0005] The purpose of this invention is to provide a segmented metal-based grinding head with diamonds arranged in an orderly manner, which can effectively improve grinding sharpness, reduce grinding intensity and optimize grinding surface structure.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A segmented metal-based grinding disc with ordered diamond arrangement includes a disc-shaped substrate and several metal-based cutting heads disposed on the disc-shaped substrate and evenly spaced along its circumference. The metal-based cutting heads have an arc-shaped segmented structure adapted to the shape of the disc-shaped substrate. The interior of the metal-based cutting head is evenly spaced along its radial direction with several diamond layers, and the diamond layers include several rows of evenly spaced diamond particles. When the arc surface of the metal-based cutting head near the outer edge of the disc-shaped substrate is sharpened, the diamond particles are orderly arranged on the arc surface. The top surface of the metal-based cutting head is a grinding surface with a groove structure.

[0008] A further improvement of this utility model is that the groove structure opened on the grinding surface of the metal-based cutting head includes several annular grooves with the center of the grinding surface as the center and the radius increasing sequentially, and the interval between each annular groove is the same.

[0009] A further improvement of this utility model is that the groove structure opened on the grinding surface of the metal-based cutting head includes several evenly arranged pits.

[0010] A further improvement of this utility model is that the groove structure opened on the grinding surface of the metal base tool includes a number of chip removal grooves evenly spaced along the radial direction of the metal base tool, and the chip removal grooves are opened through the grinding surface along the arc direction of the metal base tool.

[0011] A further improvement of the present invention is that the disc-shaped substrate is an integrally formed structure, including a positioning end face with a through mounting hole at the center of the bottom, an annular end face at the top for supporting each metal base cutter head, and an annular inclined surface in the middle connecting the positioning end face and the annular end face. The annular end face and the annular inclined surface are respectively provided with a number of evenly distributed heat dissipation holes along their circumference.

[0012] A further improvement of this utility model lies in that the density of diamond particles in each diamond layer within the metal-based cutting head increases sequentially from the inside to the outside along its radial direction.

[0013] The technological advancements achieved by this utility model due to the adoption of the above technical solution are as follows:

[0014] This utility model features a segmented metal-based cutting head grinding disc with orderly diamond arrangement. This design ensures that the number of diamond particles participating in grinding remains essentially consistent at different times, avoiding diamond segregation and aggregation. It effectively improves the stability of the grinding process and maximizes the effect of each diamond. Compared with grinding discs with disordered diamond arrangement and the same formula and diamond concentration, the grinding sharpness is significantly improved. This design effectively solves the problems of diamond segregation or aggregation, low diamond utilization, poor sharpness, and unsatisfactory grinding effect in existing cutting heads.

[0015] This invention, through the orderly arrangement of multiple radial diamond layers and diamonds on the cutting surface, can effectively improve grinding sharpness, reduce grinding intensity, enhance cutting uniformity, and extend tool life.

[0016] The groove structure on the grinding surface of the metal-based cutting head of this utility model includes several annular grooves with successively increasing radii centered on the center of the grinding surface, or several evenly arranged pits, which can effectively improve grinding speed, reduce grinding time, and reduce workload.

[0017] The groove structure on the grinding surface of the metal-based cutting head of this invention includes several chip removal grooves arranged radially at intervals along the metal-based cutting head, which can significantly improve chip removal and heat dissipation efficiency, increase grinding stability, and reduce machining thermal damage. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the segmented metal-based cutting head grinding disc of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the metal-based cutting head of this utility model;

[0020] Figure 3 This is a schematic diagram of the groove structure on the metal-based cutting head in Embodiment 1 of this utility model;

[0021] Figure 4 This is a schematic diagram of the groove structure on the metal-based cutting head in Embodiment 2 of this utility model;

[0022] Figure 5 This is a schematic diagram of the groove structure on the metal-based cutting head in Embodiment 3 of this utility model;

[0023] Among them, 1. Disc-shaped base, 1-1. Mounting hole, 1-2. Positioning end face, 1-3. Annular end face, 1-4. Annular inclined surface, 1-5. Heat dissipation hole, 2. Metal base cutting head, 2-1. Diamond layer, 2-2. Grinding surface, 2-3. Annular groove, 2-4. Pits, 2-5. Chip removal groove. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to embodiments:

[0025] Example 1

[0026] like Figure 1 and Figure 2As shown, this embodiment provides a segmented metal-based cutting head grinding disc with diamonds arranged in an orderly manner, including a disc-shaped substrate 1 and a plurality of metal-based cutting heads 2 disposed on the disc-shaped substrate 1. The plurality of metal-based cutting heads 2 are evenly spaced along the circumference of the disc-shaped substrate 1 and are fixed on the disc-shaped substrate 1 by welding or sintering. The metal-based cutting heads 2 have an arc-shaped segmented structure adapted to the shape of the disc-shaped substrate 1, that is, the virtual connecting line of each metal-based cutting head 2 is circular and close to the outer edge of the disc-shaped substrate 1.

[0027] Furthermore, the interior of the metal-based cutting head 2 is covered with several diamond layers 2-1, and these diamond layers 2-1 are evenly spaced along the radial direction of the metal-based cutting head 2. That is, multiple layers of diamond layers 2-1 are evenly laid along the radial direction inside the metal-based cutting head 2. These diamond layers 2-1 are spaced apart, not continuous. Each diamond layer 2-1 includes several rows of evenly spaced diamond particles. In other words, each diamond layer 2-1 is composed of multiple rows of diamond particles, and these diamond particles are evenly spaced, meaning that the distance between each row of diamond particles is the same. When the metal-based cutting head 2 is close to the outer edge of the disc-shaped substrate 1... After the curved surface is sharpened, the diamond particles are arranged in an orderly manner on the curved surface. That is, after the metal powder and diamond particles are mixed to form the metal-based cutting head 2, the diamond particles are arranged in an orderly manner in the metal powder. This ensures that the number of diamond particles participating in grinding at different times remains basically consistent, avoiding diamond segregation and aggregation. This effectively improves the stability of the grinding process and maximizes the role of each diamond. Compared with grinding discs with the same formula and diamond concentration but disordered diamond arrangement, the grinding sharpness is significantly improved, effectively solving the problems of diamond segregation or aggregation, low diamond utilization, poor sharpness, and unsatisfactory grinding effect in existing cutting heads. Preferably, the diamond particle density of each diamond layer 2-1 in the metal-based cutting head 2 increases radially from the inside to the outside. That is, the diamond particle density is higher on the curved surface of the metal-based cutting head 2 near the outer edge of the disc-shaped substrate 1, and lower on the curved surface away from the outer edge of the disc-shaped substrate 1.

[0028] Furthermore, the top surface of the metal-based cutting head 2 is a grinding surface 2-2 with a groove structure, preferably, as shown below. Figure 3 As shown, the groove structure on the grinding surface 2-2 of the metal-based cutting head 2 includes several annular grooves 2-3 with the center of the grinding surface 2-2 as the center and the radius increasing sequentially. The spacing between each annular groove 2-3 is the same. When the diameter of the annular groove 2-3 is less than or equal to the width of the grinding surface 2-2, the annular groove 2-3 is a complete ring. When the diameter of the annular groove 2-3 is greater than the width of the grinding surface 2-2, it is two symmetrical arcs. The setting of the annular groove 2-3 can further effectively improve the grinding speed, reduce the grinding time, and reduce the workload.

[0029] Specifically, the disc-shaped base 1 is a one-piece molded structure with an outer diameter ranging from φ50 to 350 mm. The disc-shaped base 1 includes a positioning end face 1-2, an annular end face 1-3, and an annular inclined surface 1-4. The positioning end face 1-2 is located at the bottom, and a mounting hole 1-1 for connecting to power tools is opened through the center of the positioning end face 1-2. The annular end face 1-3 is located at the top and is used to support each metal base cutting head 2. That is, each metal base cutting head 2 is evenly spaced along the circumference of the annular end face 1-3 of the disc-shaped base 1 and is fixed to the annular end face 1-3 of the disc-shaped base 1 by welding or sintering. The metal base cutting heads 2 have an arc-shaped segmented structure adapted to the shape of the annular end face 1-3 of the disc-shaped base 1. That is, the virtual connecting line of each metal base cutting head 2 is circular and close to the outer edge of the annular end face 1-3 of the disc-shaped base 1. The annular inclined surface 1-4 is located in the middle and is used to connect the positioning end face 1-2 and the annular end face 1-3.

[0030] Furthermore, several evenly distributed heat dissipation holes 1-5 are respectively opened on the annular end face 1-3 and the annular inclined surface 1-4 along their circumference for weight reduction and heat dissipation, and the heat dissipation holes 1-5 on the annular end face 1-3 are located inside the metal base cutter head 2.

[0031] Example 2

[0032] like Figure 4 As shown, the segmented metal-based cutting head grinding disc with orderly diamond arrangement provided in this embodiment has the same component structure and connection method as in embodiment 1, except for the groove structure opened on the grinding surface 2-2 of the metal-based cutting head 2. The difference is:

[0033] The groove structure on the grinding surface 2-2 of the metal-based cutting head 2 includes several evenly arranged pits 2-4, which can increase the effective contact area of ​​the grinding surface 2-2, thereby improving the grinding efficiency.

[0034] Example 3

[0035] like Figure 5 As shown, the segmented metal-based cutting head grinding disc with orderly diamond arrangement provided in this embodiment has the same component structure and connection method as in embodiment 1, except for the groove structure opened on the grinding surface 2-2 of the metal-based cutting head 2. The difference is:

[0036] The groove structure on the grinding surface 2-2 of the metal-based cutting head 2 includes several chip removal grooves 2-5 evenly spaced along the radial direction of the metal-based cutting head 2. These chip removal grooves 2-5 are opened through the grinding surface 2-2 of the metal-based cutting head 2 along the arc direction of the metal-based cutting head 2, which can effectively guide the chips outward and prevent the chips from accumulating on the grinding surface 2-2, thereby improving the processing efficiency and surface quality, significantly improving chip removal and heat dissipation efficiency, increasing grinding stability, and reducing processing thermal damage.

[0037] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A segmented metal-based cutting head grinding disc with diamonds arranged in an orderly manner, comprising a disc-shaped substrate (1) and a plurality of metal-based cutting heads (2) disposed on the disc-shaped substrate (1) and evenly spaced along its circumference, wherein the metal-based cutting heads (2) have an arc-shaped segmented structure adapted to the shape of the disc-shaped substrate (1), characterized in that: The interior of the metal-based cutting head (2) is uniformly spaced along its radial direction with several diamond layers (2-1), and the diamond layers (2-1) include several rows of uniformly spaced diamond particles. When the metal-based cutting head (2) is sharpened on the arc surface near the outer edge of the disc-shaped substrate (1), the diamond particles are arranged in an orderly manner on the arc surface. The top surface of the metal-based cutting head (2) is a grinding surface (2-2) with a groove structure.

2. The segmented metal-based tool head grinding disc with ordered diamond arrangement according to claim 1, characterized in that: The groove structure on the grinding surface (2-2) of the metal-based cutting head (2) includes several annular grooves (2-3) with the center of the grinding surface (2-2) as the center and the radius increasing sequentially, and the spacing between each annular groove (2-3) is the same.

3. The segmented metal-based tool head grinding disc with ordered diamond arrangement according to claim 1, characterized in that: The groove structure on the grinding surface (2-2) of the metal-based cutting head (2) includes several evenly arranged pits (2-4).

4. The segmented metal-based tool head grinding disc with ordered diamond arrangement according to claim 1, characterized in that: The groove structure opened on the grinding surface (2-2) of the metal base cutter head (2) includes a number of chip removal grooves (2-5) evenly spaced along the radial direction of the metal base cutter head (2). The chip removal grooves (2-5) are opened through the grinding surface (2-2) along the arc direction of the metal base cutter head (2).

5. A segmented metal-based tool head grinding disc with ordered diamond arrangement according to any one of claims 1-4, characterized in that: The disc-shaped substrate (1) is an integrally formed structure, including a positioning end face (1-2) with a through mounting hole (1-1) at the center of the bottom, an annular end face (1-3) at the top for supporting each metal base cutter head (2), and an annular inclined surface (1-4) in the middle connecting the positioning end face (1-2) and the annular end face (1-3). The annular end face (1-3) and the annular inclined surface (1-4) are respectively provided with a number of evenly distributed heat dissipation holes (1-5) along their circumference.

6. A segmented metal-based tool head grinding disc with ordered diamond arrangement according to any one of claims 1-4, characterized in that: The diamond particle density of each diamond layer (2-1) in the metal-based cutting head (2) increases sequentially from the inside to the outside along its radial direction.

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