Diamond wheel for double-disc grinding

Abstract

The utility model relates to diamond grinding wheel field discloses a double -sided grinding diamond grinding wheel, including frame, the inner wall of frame is provided with the mounting shaft, the outer wall fixedly connected with mounting seat of mounting shaft, the inner wall rotationally connected with rotating column of mounting shaft, the inner wall sliding connection has the clamping block of rotating column, the clamping block is provided with two groups, and two groups clamping block are elastically connected through reset spring between, the rear end contact of mounting seat has the base body, the inner wall of base body is provided with the through -hole. In the utility model, through setting rotating column and clamping block, using clamping block to insert in the clamping block groove of base body, the axial displacement of limiting grinding wheel disc, only need to rotate manually rotating column when dismounting grinding wheel disc, using the inner wall of mounting shaft extruding the inclined plane of clamping block, and reset spring's elastic force resets clamping block, and cooperate long bolt and fix grinding wheel disc, can realize the dismounting of grinding wheel disc, and work efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of diamond grinding wheels, and more particularly to a diamond grinding wheel for double-end face grinding. Background Technology

[0002] Diamond grinding wheels for double-face grinding are precision bonded abrasives adapted to double-face grinding machines, using diamond cutting edges as the cutting core. They are characterized by having two parallel grinding end faces, which can simultaneously grind both sides of the workpiece. They combine high hardness, high wear resistance, and good self-sharpening properties, and can meet the stringent requirements of precision parts such as bearing rings, semiconductor wafers, and hydraulic valve plates for dimensional accuracy, parallelism, and surface roughness. They are a key tool for achieving efficient and high-precision double-face grinding in the field of precision machining.

[0003] When using diamond grinding wheels, the operator first clamps the grinding wheel onto the spindle flange of the grinding machine, tightens it evenly, and then checks the coaxiality and end face runout to ensure that the error meets the process standards. Then, according to the workpiece material and precision requirements, the grinding wheel speed, feed rate, and coolant spray parameters are adjusted. Next, a sample piece is taken for trial grinding to check the parallelism and surface roughness. The parameters are fine-tuned until they meet the standards. Then, the automatic feeding is started, the grinding status is monitored throughout the process, and the grinding wheel blockage is cleaned in time. After the operation, the grinding wheel is disassembled, the grinding shavings are cleaned, the wear condition is checked, and maintenance records are made.

[0004] The existing technology has the following drawbacks: some existing diamond grinding wheels are fixed to the machine frame with bolts during installation. The bolts can only restrict the grinding wheel from vertical displacement. If there is an installation gap along the installation axis, the grinding wheel may move laterally during operation, which seriously affects the grinding accuracy and shortens the service life of the grinding wheel and bolts. To solve the above problems, a diamond grinding wheel for double-end grinding is proposed. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a diamond grinding wheel for double-end grinding, which aims to improve the problem of displacement along the axial direction that may occur in some diamond grinding wheels during use.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a diamond grinding wheel for double-end face grinding, comprising a frame, an inner wall of which is provided with a mounting shaft, an outer wall of which is fixedly connected with a mounting seat, an inner wall of which is rotatably connected with a rotating column, an inner wall of which is slidably connected with a locking block, two sets of locking blocks, which are elastically connected by a return spring, a base in contact with the rear end of the mounting seat, a through hole in the inner wall of the base, a cutting edge in the rear end of the base, a protective cover in contact with the outer rear wall of the base, and a long bolt penetrating the inner wall of the protective cover.

[0007] As a further description of the above technical solution: The surface of the cutting edge is provided with a reinforcing layer, the top of the reinforcing layer is provided with an anti-oxidation layer, and the top of the anti-oxidation layer is provided with a wear-resistant layer.

[0008] As a further description of the above technical solution: The locking block extends through the inner wall of the mounting shaft and is inserted into the inner wall of the slot.

[0009] As a further description of the above technical solution: The two sets of card blocks are centrally symmetrically distributed.

[0010] As a further description of the above technical solution: The outer wall of the mounting shaft is provided with a protrusion, and the inner wall of the base is provided with a groove that matches the protrusion. The protrusion is inserted into the inner wall of the groove.

[0011] As a further description of the above technical solution: The protective cover is fitted onto the outer wall of the rotating column.

[0012] As a further description of the above technical solution: The long bolt passes through the inner wall of the through hole.

[0013] As a further description of the above technical solution: The inner wall of the mounting base is provided with a threaded hole that matches the long bolt, and the long bolt is threaded onto the inner wall of the threaded hole.

[0014] This utility model has the following beneficial effects: 1. In this utility model, by setting a rotating column and a locking block, the locking block is inserted into the slot of the base to restrict the axial displacement of the grinding wheel. When disassembling and assembling the grinding wheel, it is only necessary to manually rotate the rotating column, use the inner wall of the mounting shaft to press the inclined surface of the locking block, and use the elastic force of the return spring to reset the locking block. The grinding wheel can be fixed with long bolts, thus realizing the disassembly and assembly of the grinding wheel, which has high work efficiency.

[0015] 2. In this utility model, by setting a reinforcing layer, an anti-oxidation layer and a wear-resistant layer, the reinforcing layer strengthens the adhesion between the coating and the diamond, while buffering the grinding impact load; the anti-oxidation layer isolates oxygen from contact with the inner structure, while relieving interface stress and preventing coating cracking; and the wear-resistant layer maintains the sharpness of the cutting edge, improving processing accuracy and efficiency, and ensuring the grinding accuracy and quality of the grinding wheel. Attached Figure Description

[0016] Figure 1This is a three-dimensional schematic diagram of a diamond grinding wheel for double-end face grinding proposed in this utility model; Figure 2 This is a cross-sectional schematic diagram of a protective cover for a diamond grinding wheel used in double-end grinding, as proposed in this utility model. Figure 3 This is a schematic cross-sectional view of the base of a diamond grinding wheel for double-end grinding proposed in this utility model; Figure 4 This is a cross-sectional schematic diagram of the mounting shaft and rotating column of a diamond grinding wheel for double-end grinding proposed in this utility model; Figure 5 This is a schematic diagram illustrating the coating of a diamond grinding wheel for double-end grinding proposed in this utility model.

[0017] Legend: 1. Frame; 2. Base; 3. Cutting edge; 4. Protective cover; 5. Long bolt; 6. Mounting shaft; 7. Rotating column; 8. Slot; 9. Locking block; 10. Through hole; 11. Return spring; 12. Reinforcing layer; 13. Antioxidant layer; 14. Wear-resistant layer; 15. Mounting base. Detailed Implementation

[0018] 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.

[0019] Reference Figures 1-3This utility model provides an embodiment of a diamond grinding wheel for double-end grinding, comprising a frame 1, an inner wall of which is provided with a mounting shaft 6, which is connected to an internal drive assembly and rotates under the drive assembly. An outer wall of the mounting shaft 6 is fixedly connected with a mounting base 15, and an inner wall of the mounting shaft 6 is rotatably connected with a rotating column 7. The surface of the rotating column 7 is provided with anti-slip grooves, which increase the contact friction between the rotating column 7 and the operator's hand, facilitating the operator's rotation of the rotating column 7. An inner wall of the rotating column 7 is slidably connected with a locking block 9, which is inclined in opposite directions. Two sets of locking blocks 9 are provided, and the two sets of locking blocks 9 are connected by a reciprocating mechanism. The spring 11 is elastically connected. When the two sets of locking blocks 9 move closer to the middle, the spring 11 is compressed. During reset, the spring 11 itself drives the two sets of locking blocks 9 to reset. The rear end of the mounting base 15 contacts the base 2. The inner wall of the base 2 has a through hole 10 for the long bolt 5 to pass through, so that the long bolt 5 can fix the base 2 to the mounting base 15. The rear end of the base 2 is provided with a cutting edge 3. The rear outer wall of the base 2 contacts a protective cover 4. The inner wall of the protective cover 4 is provided with an opening that matches the long bolt 5. After the long bolt 5 is installed, the head does not protrude outside the opening to avoid interfering with the operation of the equipment. The long bolt 5 passes through the inner wall of the protective cover 4.

[0020] Reference Figure 5 A reinforcing layer 12 is provided on the surface of the cutting edge 3. The reinforcing layer 12 is made of Ni-P alloy material and is closely attached to the surface of the diamond abrasive grain. Through chemical bonding, it strengthens the adhesion between the coating and the diamond, while buffering the grinding impact load and preventing the coating from falling off the surface of the cutting edge 3. An anti-oxidation layer 13 is provided at the top of the reinforcing layer 12. The anti-oxidation layer 13 is made of TiN material, which can isolate oxygen from contact with the inner structure and block the conduction of grinding heat to the diamond core. In addition, this layer serves as a transition structure, matching the thermal expansion coefficients of the surface wear-resistant layer 14 and the bottom reinforcing layer 12, relieving interfacial stress and preventing coating cracking. A wear-resistant layer 14 is provided at the top of the anti-oxidation layer 13. The wear-resistant layer 14 is in direct contact with the surface of the workpiece and withstands the mechanical scraping and impact loads during the grinding process. This layer is made of high-hardness TiV material, which maintains the sharpness of the cutting edge 3 and improves machining accuracy and efficiency.

[0021] Reference Figures 2-4The locking block 9 passes through the inner wall of the mounting shaft 6 and is inserted into the inner wall of the slot 8. When the locking block 9 is inserted into the inner wall of the slot 8, it can restrict the axial displacement of the grinding wheel and prevent the grinding wheel from moving laterally during operation. The two sets of locking blocks 9 are centrally symmetrically distributed. When the rotating column 7 is rotated clockwise, the inclined surfaces of the two sets of locking blocks 9 will be squeezed together by the inner wall of the mounting shaft 6. The outer wall of the mounting shaft 6 is provided with protrusions, and the inner wall of the base 2 is provided with grooves that match the protrusions. The protrusions are inserted into the inner wall of the grooves, allowing the mounting shaft 6 to rotate with the grinding wheel. The grinding wheel disc is fixed to the grinding disc to achieve the grinding of the workpiece. The protective cover 4 is sleeved on the outer wall of the rotating column 7. The protective cover 4 protects the rotating column 7 and prevents the rotating column 7 from being accidentally touched when the grinding wheel disc is working, so as to ensure the stable operation of the grinding work. The long bolt 5 passes through the inner wall of the through hole 10. The inner wall of the mounting base 15 is provided with a threaded hole that matches the long bolt 5. When the long bolt 5 is threadedly connected to the inner wall of the threaded hole, the grinding wheel disc is fixed on the mounting base 15. When the long bolt 5 is separated from the threaded hole, the long bolt 5 can be removed and the grinding wheel disc can be disassembled. The long bolt 5 is threadedly connected to the inner wall of the threaded hole.

[0022] Working principle: When installing the grinding wheel, simply align the groove on the base 2 with the protrusion on the mounting shaft 6, then install the grinding wheel on the mounting shaft 6. Next, rotate the rotating column 7 clockwise, causing the inner wall of the mounting shaft 6 to press against the locking block 9. The two sets of locking blocks 9 move closer together, not obstructing the installation of the grinding wheel. At the same time, the return spring 11 is compressed. Then push the grinding wheel forward. When the locking block 9 aligns with the slot 8 on the base 2, release the rotating column 7. The return spring 11 uses its own elasticity to drive the two sets of locking blocks 9 to return to their original position and insert into the inner wall of the slot 8, restricting the axial movement of the grinding wheel. Then, cover the rotating column 7 with the protective cover 4 and align the opening on the protective cover 4 with the through hole 10 on the base 2. Then, insert the long bolt 5 into the through hole 10 and tighten it into the threaded hole on the mounting base 15. Finally, start the drive assembly in the frame 1 to start the grinding wheel grinding operation.

[0023] When the grinding wheel is working, the cutting edge 3 contacts the workpiece. The surface of the cutting edge 3 is a wear-resistant layer 14, which directly contacts the surface of the workpiece and bears the mechanical scraping and impact loads during the grinding process. This layer is made of high-hardness TiV material, which can maintain the sharpness of the cutting edge 3 and improve the processing accuracy and efficiency. The middle layer is an anti-oxidation layer 13, made of TiN material, which can isolate oxygen from contact with the inner structure and block the conduction of grinding heat to the diamond core. In addition, this layer serves as a transition structure, matching the thermal expansion coefficients of the surface wear-resistant layer 14 and the bottom reinforcing layer 12, relieving interface stress and preventing coating cracking. The innermost reinforcing layer 12 is made of Ni-P alloy material, which is in close contact with the surface of the diamond abrasive grains. Through chemical bonding, it strengthens the adhesion between the coating and the diamond, while buffering the grinding impact load and preventing the coating from peeling off the surface of the cutting edge 3.

[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A diamond grinding wheel for double-end grinding, comprising a frame (1), characterized in that: The inner wall of the frame (1) is provided with a mounting shaft (6), and the outer wall of the mounting shaft (6) is fixedly connected with a mounting base (15). The inner wall of the mounting shaft (6) is rotatably connected with a rotating column (7), and the inner wall of the rotating column (7) is slidably connected with a locking block (9). There are two sets of locking blocks (9), and the two sets of locking blocks (9) are elastically connected by a return spring (11). The rear end of the mounting base (15) contacts the base (2). The inner wall of the base (2) is provided with a through hole (10). The rear end of the base (2) is provided with a cutting edge (3). The rear outer wall of the base (2) contacts a protective cover (4), and the inner wall of the protective cover (4) is penetrated by a long bolt (5).

2. The diamond grinding wheel for double-end face grinding according to claim 1, characterized in that: The surface of the cutting edge (3) is provided with a reinforcing layer (12), the top of the reinforcing layer (12) is provided with an anti-oxidation layer (13), and the top of the anti-oxidation layer (13) is provided with a wear-resistant layer (14).

3. The diamond grinding wheel for double-end face grinding according to claim 1, characterized in that: The locking block (9) passes through the inner wall of the mounting shaft (6) and is inserted into the inner wall of the slot (8).

4. A diamond grinding wheel for double-end face grinding according to claim 1, characterized in that: The two sets of card blocks (9) are centrally symmetrically distributed.

5. A diamond grinding wheel for double-end face grinding according to claim 1, characterized in that: The outer wall of the mounting shaft (6) is provided with a protrusion, and the inner wall of the base (2) is provided with a groove that matches the protrusion. The protrusion is inserted into the inner wall of the groove.

6. A diamond grinding wheel for double-end face grinding according to claim 1, characterized in that: The protective cover (4) is fitted onto the outer wall of the rotating column (7).

7. A diamond grinding wheel for double-end face grinding according to claim 1, characterized in that: The long bolt (5) passes through the inner wall of the through hole (10).

8. A diamond grinding wheel for double-end face grinding according to claim 1, characterized in that: The inner wall of the mounting base (15) is provided with a threaded hole that matches the long bolt (5), and the long bolt (5) is threadedly connected to the inner wall of the threaded hole.

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