Alumina grinding wheel suitable for grinding alloy steel material

Abstract

The utility model discloses an aluminum oxide grinding wheel suitable for grinding alloy steel materials, and belongs to the technical field of grinding wheels. The problem that an existing grinding wheel is poor in cooling effect is solved. The center of the grinding wheel main body is connected with a mounting ring; the top of the mounting ring is fixedly connected with a flange ring; the outer side of the flange ring is rotationally connected with a sealing disc; a water inlet is formed in the sealing disc; the other end of the cooling runner is connected with a water outlet in the bottom of the grinding wheel body. In the utility model, the driving equipment drives the grinding wheel to rotate, and the ground workpiece is ground through the bottom of the grinding wheel main body during rotation; during grinding, cooling liquid is injected through the water inlet, flows out of the water outlet in the bottom of the grinding wheel body after passing through the cooling flow channel and flows into the contact face of the grinding wheel body and a workpiece to cool the grinding wheel body and the workpiece, and the cooling effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding wheels, in particular to an aluminum oxide grinding wheel suitable for grinding alloy steel materials. Background Art

[0002] In mechanical processing, it is necessary to frequently use grinding wheels to grind alloy materials. During the grinding process, due to the severe plastic deformation and friction in the grinding area, a large amount of friction heat will be generated in the contact area between the grinding wheel and the workpiece being ground. If the heat is not dissipated in time, burns, cracks and other undesirable phenomena will occur on the surface of the workpiece. At the same time, high temperature will also affect the strength of the grinding wheel.

[0003] In traditional machining, coolant is poured on the grinding wheel during grinding to cool it and the workpiece. However, due to the high-speed operation of the grinding wheel during machining, an airflow field is generated in the friction area, which greatly hinders the pouring of coolant from the outside into the grinding area, so that the poured coolant cannot enter the contact area between the grinding wheel and the workpiece being ground, and thus cannot effectively cool the workpiece being processed.

[0004] Compared with the traditional external nozzle pouring cooling method, the existing patent discloses the use of internal cooling, which directly transports the coolant from the grinding wheel body to the grinding area. This method can effectively avoid the obstruction of the airflow field generated by the grinding wheel during the grinding process. A Chinese invention patent with publication number CN113664738A discloses an internal cooling grinding wheel; in this patent, an annular coolant inner flow channel and a thin straight pipe are designed inside the grinding wheel, and the coolant is discharged from the side of the grinding wheel through the two, thereby achieving a cooling effect on the grinding wheel; however, a bowl-shaped grinding wheel is usually used for grinding alloy materials, and the grinding surface of the bowl-shaped grinding wheel is mainly the bottom surface of the grinding wheel, so the method of discharging coolant from the side of the grinding wheel in this patent cannot achieve a good cooling effect. A Chinese utility model patent with authorization announcement number CN220408404U discloses a metal grinding wheel with good stability. A circulation pipe is designed in the grinding wheel disclosed in the patent. During operation, cooling water flows along the circulation pipe to take away the heat generated by friction. Although this cooling method can achieve a cooling effect, the cooling water does not directly enter between the grinding wheel and the friction surface of the workpiece being ground, so the cooling effect is poor. Moreover, during grinding, the cooling water only circulates in the grinding wheel and does not directly contact the workpiece being ground, so it does not have a good cooling effect on the workpiece being ground. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides an aluminum oxide grinding wheel suitable for grinding alloy steel materials, which solves the problem of poor cooling effect of the prior grinding wheel.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] An alumina grinding wheel suitable for grinding alloy steel materials comprises a grinding wheel body, wherein a mounting ring is connected to the center of the grinding wheel body; a flange ring is fixedly connected to the top of the mounting ring, and a sealing disk is rotatably connected to the outer side of the flange ring; a water inlet is provided on the sealing disk; the water inlet is connected to one end of a cooling channel inside the grinding wheel body, and the other end of the cooling channel is connected to a water outlet at the bottom of the grinding wheel body.

[0008] In this scheme, when in use, the driving device drives the grinding wheel to rotate, and the workpiece to be ground is ground through the bottom of the grinding wheel body during rotation; during grinding, the coolant is injected through the water inlet, and after passing through the cooling flow channel, it flows out from the water outlet at the bottom of the grinding wheel body and flows into the contact surface between the grinding wheel body and the workpiece, cooling the two, and the cooling effect is good.

[0009] Further, the grinding wheel body includes a grinding wheel disc and a metal reinforcement disc, and the metal reinforcement disc is connected to the back side of the grinding wheel disc;

[0010] The top and bottom of the mounting ring extend outwards to form an upper fixing ring and a lower fixing ring respectively, and the center of the grinding wheel disc is embedded in the middle of the upper fixing ring and the lower fixing ring;

[0011] An annular water storage chamber is formed between the upper fixing ring and the metal reinforcement plate, the top of the annular water storage chamber is communicated with the water inlet, and the bottom of the annular water storage chamber is communicated with the cooling flow channel.

[0012] In this solution, a metal reinforcement plate is connected to the back of the grinding wheel disc to reinforce it, thereby increasing the strength of the grinding wheel disc and preventing it from breaking during grinding; the grinding wheel disc is embedded between the upper fixing ring and the lower fixing ring, thereby increasing the connection stability between the grinding wheel disc and the mounting ring and preventing the grinding wheel disc from loosening when force is applied to one side of the grinding wheel disc during grinding.

[0013] Furthermore, a glass fiber mesh cover is provided on the grinding wheel disc, and the glass fiber mesh cover is arranged at the position where the grinding wheel disc is connected to the upper fixing ring.

[0014] In this scheme, a fiberglass mesh cover is designed to increase the local strength of the grinding wheel disc.

[0015] Furthermore, a plurality of cooling channels are provided, and the plurality of cooling channels are arranged in an annular array inside the grinding wheel; and the plurality of cooling channels are all connected to the annular water storage chamber.

[0016] In this solution, multiple cooling channels connected to the annular water storage chamber are designed. When the grinding wheel rotates, the coolant in the annular water storage chamber flows to the bottom of the grinding wheel disc through multiple cooling channels under the action of centrifugation, ensuring that the coolant is evenly dispersed to the grinding surface at the bottom of the grinding wheel disc, thereby achieving comprehensive cooling of the grinding surface with good cooling effect; and multiple cooling channels simultaneously conveying coolant can also avoid large local temperature differences in the grinding wheel disc, thereby affecting its strength.

[0017] Furthermore, a silencer groove with an arc structure is provided at the bottom of the grinding wheel disc; the number of the silencer grooves is equal to the number of the cooling channels, and the water outlet is arranged inside the silencer groove.

[0018] In this solution, an arc-shaped silencer groove is designed. The silencer groove guides the air during the rotation of the grinding wheel, reduces the vibration generated by the movement of the grinding wheel, and reduces the generation of noise.

[0019] Furthermore, the slot diameter of the silencer slot decreases from the center of the grinding wheel disc to the surrounding areas.

[0020] In this solution, the water outlet is designed inside the silencer groove, and the coolant diffuses around along the silencer groove when the grinding wheel rotates; the groove opening of the silencer groove is designed to be gradually reduced in diameter to prevent the coolant from being thrown around immediately under the action of centrifugal force after flowing out of the water outlet, thereby extending the heat exchange time between the coolant and the grinding wheel and achieving a better heat exchange effect.

[0021] Furthermore, the metal reinforcement disc is fixed to the back side of the grinding wheel disc by bolts.

[0022] Furthermore, the flange ring is connected to the sealing disk via a bearing.

[0023] The beneficial effects of the utility model are:

[0024] The aluminum oxide grinding wheel provided by the utility model adopts an internal cooling method, and the coolant is diverted in the annular water storage chamber and then transported to the contact surface between the grinding wheel disc and the workpiece through the cooling channel, so as to fully cool down the grinding wheel disc and the workpiece, and the cooling effect is obvious; a silencer groove is designed at the bottom of the grinding wheel disc, which reduces the noise while also ensuring that the coolant is at the bottom of the grinding wheel disc, so as to fully cool down the grinding wheel disc. A metal reinforcement disc is designed on the back of the grinding wheel disc to enhance its strength and prevent the grinding wheel disc from breaking when subjected to tangential stress. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the cross-sectional structure of an aluminum oxide grinding wheel suitable for grinding alloy steel materials according to the utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the aluminum oxide grinding wheel suitable for grinding alloy steel materials in a bottom view according to the utility model;

[0027] Figure 3 The utility model is a schematic diagram of the top view of the aluminum oxide grinding wheel suitable for grinding alloy steel materials.

[0028] Reference numerals:

[0029] 1. Grinding wheel body; 11. Grinding wheel disc; 111. Glass fiber mesh cover; 112. Silencing groove; 12. Metal reinforcement disc; 2. Mounting ring; 21. Upper fixing ring; 22. Lower fixing ring; 3. Flange ring; 4. Sealing disc; 5. Water inlet; 6. Water outlet; 7. Cooling channel; 8. Annular water storage chamber; 9. Bearing; DETAILED DESCRIPTION

[0030] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments. The specific implementation of the utility model is described below to facilitate the understanding of the utility model by those skilled in the art, but it should be clear that the utility model is not limited to the scope of the specific implementation. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the utility model defined and determined by the attached claims, these changes are obvious, and all inventions and creations conceived using the utility model are protected.

[0031] like Figure 1 As shown, this embodiment provides an alumina grinding wheel suitable for grinding alloy steel materials; the alumina grinding wheel adopts an internal cooling method to transport the coolant to the contact surface between the grinding wheel and the workpiece being ground, and the contact surface between the two is cooled and the cooling effect is obvious; it specifically includes:

[0032] Grinding wheel body 1, mounting ring 2, flange ring 3, sealing disc 4, water inlet 5, water outlet 6 and cooling channel 7;

[0033] Among them, a mounting ring 2 is connected to the center of the grinding wheel body 1; a flange ring 3 is fixedly connected to the top of the mounting ring 2, and a sealing disk 4 is rotatably connected to the outer side of the flange ring 3; a water inlet 5 is provided on the sealing disk 4; the water inlet 5 is connected to one end of the cooling channel 7 inside the grinding wheel body 1, and the other end of the cooling channel 7 is connected to the water outlet 6 at the bottom of the grinding wheel body 1; during grinding, the water inlet 5 is connected to the water supply equipment, and the water supply equipment allows the coolant to enter from the water inlet 5, and after passing through the cooling channel 7, it flows out from the water outlet 6 at the bottom of the grinding wheel body 1.

[0034] The grinding wheel body 1 includes a grinding wheel disc 11 and a metal reinforcement disc 12. The metal reinforcement disc 12 is fixed to the back of the grinding wheel disc 11 to reinforce it, thereby strengthening the strength of the grinding wheel disc 11 and preventing it from breaking during grinding. The top and bottom of the mounting ring 2 extend outward to form an upper fixing ring 21 and a lower fixing ring 22 respectively. The center of the grinding wheel disc 11 is embedded between the upper fixing ring 21 and the lower fixing ring 22. This design increases the connection stability between the grinding wheel disc 11 and the mounting ring 2, and prevents the grinding wheel disc 11 from loosening when force is applied to one side of the grinding wheel disc 11 during grinding. An annular water storage chamber 8 is formed between the upper fixing ring 21 and the metal reinforcement disc 12. The top of the annular water storage chamber 8 is connected to the water inlet 5, and the bottom of the annular water storage chamber 8 is connected to the cooling channel 7.

[0035] A glass fiber mesh cover 111 is provided on the grinding wheel disc 11 , and the glass fiber mesh cover 111 is provided at the position where the grinding wheel disc 11 is connected to the upper fixing ring 21 ; the glass fiber mesh cover 111 is designed to increase the local strength of the grinding wheel disc 11 .

[0036] As a preference of this embodiment, the grinding wheel 11 is made of alumina ceramic abrasive.

[0037] There are a plurality of cooling channels 7, which are arranged in an annular array inside the grinding wheel 11; the plurality of cooling channels 7 are all connected to the annular water storage chamber 8; when the grinding wheel rotates, the coolant in the annular water storage chamber 8 flows to the bottom of the grinding wheel 11 through a plurality of cooling channels 7 under the action of centrifugation, ensuring that the coolant is evenly dispersed to the grinding surface at the bottom of the grinding wheel 11, thereby achieving comprehensive cooling of the grinding surface with a good cooling effect; and the simultaneous delivery of coolant by a plurality of cooling channels 7 can also avoid the problem of large local temperature difference of the grinding wheel 11, thereby affecting its strength.

[0038] like Figure 2 As shown, an arc-shaped silencer groove 112 is provided at the bottom of the grinding wheel 11; the number of the silencer grooves 112 is equal to the cooling channel 7, and the water outlet 6 is arranged inside the silencer groove 112; the arc-shaped silencer groove 112 is designed to guide the air during the rotation of the grinding wheel 11, thereby reducing the vibration generated by the movement of the grinding wheel 11 and reducing the generation of noise.

[0039] The slot diameter of the silencer groove 112 decreases from the center of the grinding wheel 11 to the surrounding areas; the water outlet 6 is designed inside the silencer groove 112, and the coolant diffuses to the surrounding areas along the silencer groove 112 when the grinding wheel 11 rotates; the slot diameter of the silencer groove 112 is gradually reduced to prevent the coolant from being thrown to the surrounding areas immediately after flowing out of the water outlet 6 under the action of centrifugal force, thereby extending the heat exchange time between the coolant and the grinding wheel 11 and achieving a better heat exchange effect.

[0040] As a preferred embodiment of this invention, tap water is selected as the cooling liquid.

[0041] like Figure 3As shown, the metal reinforcement disc 12 is fixed to the back side of the grinding wheel disc 11 by three bolts.

[0042] The flange ring 3 and the sealing disk 4 are connected through the bearing 9. The flange ring 3 and the inner ring of the bearing are in interference connection, and the sealing disk 4 and the outer ring of the bearing are in interference connection.

[0043] The working principle of this embodiment is:

[0044] The alumina grinding wheel provided in this embodiment is installed on a power device when in use, and a water supply device is connected to the water inlet 5; the power device drives the alumina grinding wheel to rotate, and the workpiece to be polished is polished through the bottom of the grinding wheel body 1 during rotation; at the same time, the coolant is injected into the annular water storage chamber 8 through the water inlet 5, and the coolant is divided in the annular water storage chamber 8 and then flows out from the water outlet 6 through the cooling channel 7, and diffuses to the surroundings along the silencer groove 112 under the action of centrifugal force to cool the grinding wheel disc 11.

[0045] Those skilled in the art will appreciate that the embodiments herein are intended to help readers understand the principles of the present invention, and should be understood that the protection scope of the present invention is not limited to such specific statements and embodiments. Those skilled in the art can make various other specific variations and combinations based on the technical inspiration disclosed in the present invention without departing from the essence of the present invention, and these variations and combinations are still within the protection scope of the present invention.

Claims

1. An alumina grinding wheel suitable for grinding alloy steel materials, characterized by: The invention comprises a grinding wheel body (1), wherein a mounting ring (2) is connected at the center of the grinding wheel body (1); a flange ring (3) is fixedly connected to the top of the mounting ring (2), and a sealing disk (4) is rotatably connected to the outer side of the flange ring (3); a water inlet (5) is provided on the sealing disk (4); the water inlet (5) is connected to one end of a cooling channel (7) inside the grinding wheel body (1), and the other end of the cooling channel (7) is connected to a water outlet (6) at the bottom of the grinding wheel body (1).

2. The alumina grinding wheel suitable for grinding alloy steel materials according to claim 1, characterized in that: The grinding wheel body (1) comprises a grinding wheel disc (11) and a metal reinforcement disc (12), wherein the metal reinforcement disc is connected to the back side of the grinding wheel disc (11); An upper fixing ring (21) and a lower fixing ring (22) are respectively extended from the top and the bottom of the mounting ring (2) to form an upper fixing ring (21) and a lower fixing ring (22), and the center of the grinding wheel (11) is embedded in the middle of the upper fixing ring (21) and the lower fixing ring (22); An annular water storage chamber (8) is formed between the upper fixing ring (21) and the metal reinforcement plate (12); the top of the annular water storage chamber (8) is connected to the water inlet (5); and the bottom of the annular water storage chamber (8) is connected to the cooling flow channel (7).

3. The alumina grinding wheel suitable for grinding alloy steel materials according to claim 2, characterized in that: The grinding wheel disc (11) is provided with a glass fiber mesh cover (111), and the glass fiber mesh cover (111) is arranged at a position where the grinding wheel disc (11) is connected to the upper fixing ring (21).

4. The alumina grinding wheel suitable for grinding alloy steel materials according to claim 2, characterized in that: A plurality of cooling channels (7) are provided, and the plurality of cooling channels (7) are arranged in an annular array inside the grinding wheel (11); and the plurality of cooling channels (7) are all connected to the annular water storage chamber (8).

5. The alumina grinding wheel suitable for grinding alloy steel materials according to claim 4, characterized in that: The bottom of the grinding wheel (11) is provided with an arc-shaped silencer groove (112); the number of the silencer grooves (112) is the same as the number of the cooling channels (7), and the water outlet (6) is arranged inside the silencer groove (112).

6. The alumina grinding wheel suitable for grinding alloy steel materials according to claim 5, characterized in that: The slotting diameter of the muffler groove (112) decreases from the center of the grinding wheel (11) toward the periphery.

7. The alumina grinding wheel suitable for grinding alloy steel materials according to any one of claims 2 to 6, characterized in that: The metal reinforcement disc (12) is fixed to the back side of the grinding wheel disc (11) by means of bolts.

8. The alumina grinding wheel suitable for grinding alloy steel materials according to any one of claims 1 to 6, characterized in that: The flange ring (3) is connected to the sealing disk (4) via a bearing (9).

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