Diamond grinding wheel with silicon nitride structural member

Abstract

The utility model discloses a silicon nitride structural member diamond grinding wheel, which belongs to the technical field of silicon nitride structural member grinding and comprises a grinding wheel body, a convex block arranged on the surface of the grinding wheel body, a grinding surface layer fixedly connected to the surfaces of the grinding wheel body and the convex block, a positioning groove arranged in the center of the grinding wheel body, and a connecting block inserted into the inner wall of the positioning groove. According to the silicon nitride structural part diamond grinding wheel, due to the fact that the grinding surface layer is arranged on the silicon nitride structural part diamond grinding wheel and formed by casting diamond powder, the use amount of diamonds in the diamond grinding wheel can be greatly increased; and through the arrangement of the connecting block, the positioning rod and the fixing sleeve, the grinding wheel and the motor shaft rod can be rapidly disassembled and assembled, and meanwhile the rotating stability of the grinding wheel can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding silicon nitride structural parts, and more specifically to a diamond grinding wheel for silicon nitride structural parts. Background Art

[0002] Silicon nitride is an inorganic substance with the chemical formula Si3N4. It is an important structural ceramic material with high hardness, inherent lubricity, and wear resistance. It is an atomic crystal.

[0003] At present, in the process of processing silicon nitride structural parts, diamond grinding wheels are needed to grind their surfaces. However, the commonly used diamond grinding wheels use a large amount of diamond, which causes a waste of resources and increases the cost of diamond grinding wheels. In addition, most diamond grinding wheels are connected to the motor shaft through tools such as wrenches, which makes it more troublesome to replace them.

[0004] For example, a ceramic grinder disclosed in publication No. CN214642536U includes a grinding platform, a cavity is fixedly arranged at the bottom of the grinding platform, support plates are fixedly arranged on both sides of the top of the grinding platform, a box is fixedly arranged on the top of the support plate, an electric push rod is fixedly arranged on the bottom of the box, a motor is fixedly arranged at one end of the electric push rod, the output shaft of the motor is fixedly connected to a rotating shaft, and a grinding disc is fixedly arranged at one end of the rotating shaft.

[0005] It can be seen from the above-mentioned public scheme that the grinding disc is directly fixed to the motor output shaft, and tools such as wrenches are indispensable for assembly and replacement, which is troublesome and inconvenient. In addition, the non-grinding surface of the diamond grinding wheel is also provided with diamond material, which causes a waste of resources and makes the production cost of the diamond grinding wheel higher. Utility Model Content

[0006] In view of the problems existing in the prior art, the purpose of the utility model is to provide a silicon nitride structural component diamond grinding wheel. The grinding surface layer formed by casting diamond powder on the silicon nitride structural component diamond grinding wheel can greatly increase the amount of diamond in the diamond grinding wheel, thereby reducing the production cost of the diamond grinding wheel. In addition, through the provision of a connecting block, a positioning rod and a fixing sleeve, not only the grinding wheel and the motor shaft can be quickly disassembled and combined, but also the rotational stability of the grinding wheel can be ensured.

[0007] To solve the above problems, the utility model adopts the following technical solutions.

[0008] A silicon nitride structural component diamond grinding wheel comprises a grinding wheel body, the surface of the grinding wheel body is provided with a bump, the surfaces of the grinding wheel body and the bump are fixedly connected with a grinding surface layer, a positioning groove is provided at the center of the grinding wheel body, a connecting block is inserted into the inner wall of the positioning groove, one end of the connecting block is provided with a fixing sleeve, one end of the fixing sleeve is detachably connected to a motor shaft, and the other end of the connecting block is connected to a positioning rod by a thread. The grinding surface layer cast by diamond powder provided on the silicon nitride structural component diamond grinding wheel can greatly increase the amount of diamond in the diamond grinding wheel, thereby reducing the production cost of the diamond grinding wheel, and the connecting block, positioning rod and fixing sleeve are provided, not only the grinding wheel and the motor shaft can be quickly disassembled and combined, but also the rotational stability of the grinding wheel can be ensured.

[0009] Furthermore, a through hole is formed at the bottom of the positioning groove, one end of the through hole is connected to a countersunk groove, and the inner wall of the through hole is in contact with and connected to the surface of the positioning rod.

[0010] Furthermore, the cross-sectional shapes of the positioning groove and the connecting block are both polygonal, a threaded hole is provided at the center position of one end of the connecting block, and the surface of the positioning rod is provided with an external thread, which ensures the rotation stability of the grinding wheel and prevents slippage between the grinding wheel and the motor shaft.

[0011] Furthermore, a knob is provided at one end of the positioning rod, and the end surface of the knob is in contact and pressed against the inner wall of the countersunk groove. The knob is a manual knob, which is convenient for the user to manually rotate the positioning rod.

[0012] Furthermore, a limit plate is fixedly sleeved on the surface of the fixing sleeve, and bolts are inserted on the surface of the fixing sleeve. The bolts are manual bolts, which facilitate manual assembly and disassembly of the fixing sleeve and the motor shaft.

[0013] Furthermore, the grinding surface layer is cast by diamond powder, and the grinding surface layer is on the grinding surface of the grinding wheel, which reduces the amount of diamond used.

[0014] Compared with the prior art, the advantages of the present invention are:

[0015] (1) The grinding surface layer formed by casting diamond powder in the present invention can greatly increase the amount of diamond in the diamond grinding wheel, thereby reducing the production cost of the diamond grinding wheel.

[0016] (2) The connection block, positioning rod and fixing sleeve provided in this solution not only facilitate the rapid disassembly and assembly between the grinding wheel and the motor shaft, but also ensure the rotational stability of the grinding wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 for Figure 1 A magnified view of part A;

[0019] Figure 3 It is a top view of the grinding wheel body structure of the utility model.

[0020] Description of the numbers in the figure:

[0021] 1 grinding wheel body, 11 positioning groove, 12 through hole, 13 countersunk groove, 14 protrusion, 15 grinding surface layer, 2 connecting block, 21 limit plate, 22 fixing sleeve, 23 bolt, 3 motor shaft, 4 positioning rod, 41 knob. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example 1

[0024] See also Figure 1-3 The silicon nitride structural component diamond grinding wheel comprises a grinding wheel body 1, a protrusion 14 is arranged on the surface of the grinding wheel body 1, and the shape of the protrusion 14 is T-shaped, which can increase the connection firmness of the grinding surface layer 15. The grinding surface layer 15 is fixedly connected to the surface of the grinding wheel body 1 and the protrusion 14. The grinding surface layer 15 is provided with a binder during the casting process. The casting method and principle are well known to those skilled in the art. A positioning groove 11 is arranged at the center of the grinding wheel body 1, and a connecting block 2 is inserted into the inner wall of the positioning groove 11. The positioning groove 11 and the connecting block 2 can avoid radial rotation, have a limiting effect, and ensure To ensure the rotational grinding stability of the grinding wheel, a fixing sleeve 22 is provided at one end of the connecting block 2, an axial hole is provided at one end of the fixing sleeve 22, and a bolt hole is connected to the axial hole to facilitate the connection between the motor shaft 3 and the bolt 23. One end of the fixing sleeve 22 is detachably connected to the motor shaft 3, and the surface of the motor shaft 3 is provided with radially penetrating holes to facilitate the insertion and positioning of the bolt 23. The other end of the connecting block 2 is threadedly connected to a positioning rod 4, and the positioning rod 4 is used to fix the installation position of the connecting block 2 and the grinding wheel. At the same time, the polygonal connecting block 2 and the positioning groove 11 can avoid the manual rotation twisting force of the positioning rod 4, thereby ensuring its service life.

[0025] The grinding surface layer 15 is cast with diamond powder, and the grinding surface layer 15 is on the grinding surface of the grinding wheel, which reduces the amount of diamond used. The surface of the fixed sleeve 22 is fixedly sleeved with a limit plate 21, and the surface of the fixed sleeve 22 is inserted with a bolt 23, which is a manual bolt, which is convenient for manual assembly and disassembly of the fixed sleeve 22 and the motor shaft 3.

[0026] In this embodiment, the grinding surface layer 15 cast from diamond powder can greatly increase the amount of diamond in the diamond grinding wheel, thereby reducing the production cost of the diamond grinding wheel.

[0027] Example 2

[0028] See also Figure 1-3 The silicon nitride structural component diamond grinding wheel comprises a grinding wheel body 1, a protrusion 14 is arranged on the surface of the grinding wheel body 1, and the shape of the protrusion 14 is T-shaped, which can increase the connection firmness of the grinding surface layer 15. The grinding surface layer 15 is fixedly connected to the surface of the grinding wheel body 1 and the protrusion 14. The grinding surface layer 15 is provided with a binder during the casting process. The casting method and principle are well known to those skilled in the art. A positioning groove 11 is arranged at the center of the grinding wheel body 1, and a connecting block 2 is inserted into the inner wall of the positioning groove 11. The positioning groove 11 and the connecting block 2 can avoid radial rotation, have a limiting effect, and ensure To ensure the rotational grinding stability of the grinding wheel, a fixing sleeve 22 is provided at one end of the connecting block 2, an axial hole is provided at one end of the fixing sleeve 22, and a bolt hole is connected to the axial hole to facilitate the connection between the motor shaft 3 and the bolt 23. One end of the fixing sleeve 22 is detachably connected to the motor shaft 3, and the surface of the motor shaft 3 is provided with radially penetrating holes to facilitate the insertion and positioning of the bolt 23. The other end of the connecting block 2 is threadedly connected to a positioning rod 4, and the positioning rod 4 is used to fix the installation position of the connecting block 2 and the grinding wheel. At the same time, the polygonal connecting block 2 and the positioning groove 11 can avoid the manual rotation twisting force of the positioning rod 4, thereby ensuring its service life.

[0029] A through hole 12 is provided at the bottom of the positioning groove 11, and one end of the through hole 12 is connected to a countersunk groove 13. The inner wall of the through hole 12 is in contact and connected with the surface of the positioning rod 4. The cross-sectional shapes of the positioning groove 11 and the connecting block 2 are both polygonal. A threaded hole is provided at the center position of one end of the connecting block 2, and an external thread is provided on the surface of the positioning rod 4, which ensures the rotation stability of the grinding wheel and prevents slippage between the grinding wheel and the motor shaft 3. A knob 41 is provided at one end of the positioning rod 4, and the end face of the knob 41 is in contact and squeezed with the inner wall of the countersunk groove 13. The knob 41 is a manual knob, which is convenient for the user to manually rotate the positioning rod 4.

[0030] In this embodiment, the connection block 2, the positioning rod 4 and the fixing sleeve 22 are provided, which not only facilitates the rapid disassembly and assembly of the grinding wheel and the motor shaft 3, but also ensures the rotation stability of the grinding wheel.

[0031] When installing the diamond grinding wheel of the silicon nitride structural component, first plug one end of the fixing sleeve 22 into the motor shaft 3, and then tighten it with the manual bolt 23, then plug the grinding wheel body 1 into the connecting block 2, and then manually insert the positioning rod 4 through the countersunk groove 13 and tighten it clockwise with one end of the connecting block 2, so as to fix the connection position of the motor shaft 3 and the grinding wheel, and then start the motor to drive the grinding wheel to rotate through the motor shaft 3, so that the grinding surface layer 15 contacts and grinds with the surface of the silicon nitride structural component, and the grinding surface layer 15 cast by diamond powder can greatly increase the amount of diamond in the diamond grinding wheel, thereby reducing the production cost of the diamond grinding wheel, and through the connecting block 2, positioning rod 4 and fixing sleeve 22, not only the grinding wheel and the motor shaft 3 can be quickly disassembled and combined, but also the rotation stability of the grinding wheel can be ensured.

[0032] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A silicon nitride structural diamond grinding wheel, comprising a grinding wheel body (1), characterized in that: The surface of the grinding wheel body (1) is provided with a protrusion (14), and the surfaces of the grinding wheel body (1) and the protrusion (14) are fixedly connected with a grinding surface layer (15). A positioning groove (11) is provided at the center of the grinding wheel body (1), and a connecting block (2) is inserted into the inner wall of the positioning groove (11). A fixing sleeve (22) is provided at one end of the connecting block (2), and one end of the fixing sleeve (22) is detachably connected to a motor shaft (3), and the other end of the connecting block (2) is connected to a positioning rod (4) through a thread.

2. The diamond grinding wheel for silicon nitride structural parts according to claim 1, characterized in that: A through hole (12) is formed at the bottom of the positioning groove (11), one end of the through hole (12) is connected to a countersunk groove (13), and the inner wall of the through hole (12) is in contact with the surface of the positioning rod (4).

3. The diamond grinding wheel for silicon nitride structural parts according to claim 1, characterized in that: The cross-sectional shapes of the positioning groove (11) and the connecting block (2) are both polygonal; a threaded hole is provided at the center of one end of the connecting block (2); and an external thread is provided on the surface of the positioning rod (4).

4. The diamond grinding wheel for silicon nitride structural parts according to claim 2, characterized in that: A knob (41) is provided at one end of the positioning rod (4), the end surface of the knob (41) is in contact and extrusion with the inner wall of the countersunk groove (13), and the knob (41) is a manual knob.

5. The diamond grinding wheel for silicon nitride structural parts according to claim 1, characterized in that: The surface of the fixing sleeve (22) is fixedly sleeved with a limiting plate (21), and the surface of the fixing sleeve (22) is plugged with bolts (23).

6. The diamond grinding wheel for silicon nitride structural parts according to claim 1, characterized in that: The grinding surface layer (15) is cast from diamond powder.

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