A composite polishing disc

Abstract

The application discloses a kind of composite polishing disc, it is related to polishing disc technical field, currently, polishing disc is prone to shaking, influence polishing efficiency and quality;The present application comprises shell, the protective cover of setting in the front side of shell, and the polishing disc of setting in the protective cover, further include the protection casing of setting on the inner wall of protective cover, and the balancing assembly and balance plate of setting in the protection casing;The balancing ring for balancing stability is fixedly arranged on the side of polishing disc relative to the protective cover, and balancing ring is located in protection casing;The inside of balance plate is contacted with the outside wall of balancing ring cooperation.The magnetic field force of repulsion between the first balance magnet and the second balance magnet is used, and the acting force is transmitted to the balance plate along the movable rod, the balance ring is restored to the balanced stable rotating state using the balance plate, the intensity when polishing disc shakes can be effectively attenuated, the amplitude of polishing disc shaking is reduced, and the stability when polishing disc runs is guaranteed.

Description

Technical Field

[0001] This invention belongs to the field of polishing disc technology, and particularly relates to a composite polishing disc. Background Technology

[0002] A composite polishing disc is a polishing tool typically used for grinding and polishing the surfaces of materials such as metal, wood, and plastic. It is composed of multiple materials, usually including a substrate, an abrasive layer, and a binder. Composite polishing discs have many advantages, such as high polishing efficiency, long service life, and wide applicability. They can be used not only for manual polishing but also for mechanized polishing in conjunction with power tools, improving polishing efficiency and quality. By attaching the polishing disc to a polishing machine and then rotating the disc to polish and rub the workpiece, the surface of the workpiece becomes smooth and clean.

[0003] Currently, existing grinding discs still have the following problems during use. When grinding workpieces, due to the use of mechanical grinding, vibration is inevitable during mechanical operation. Affected by the poor overall stability of the device's own structure, it is easily affected by external forces and vibrations, causing the grinding disc to shake. This not only affects grinding efficiency but also causes damage to the end face of the workpiece, thus affecting the grinding quality. Therefore, it is insufficient and cannot meet the user's needs. Thus, it is necessary to further improve it.

[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings to provide a composite polishing disc, in order to achieve a more practical purpose. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention provides a composite grinding disc, which is achieved by the following specific technical means:

[0006] A composite grinding disc includes a housing, a protective cover disposed on the front side of the housing, and a grinding disc disposed in the protective cover. It also includes a protective housing disposed on the inner wall of the protective cover, and a balancing component and a balancing plate disposed inside the protective housing.

[0007] A balancing ring for stabilization is fixedly installed on one side of the grinding disc opposite to the protective cover, and the balancing ring is located in the protective housing;

[0008] The inner side of the balance plate is in contact with the outer wall of the balance ring. The balance assembly includes a balance sleeve rod fixedly mounted on the side wall of the protective housing. A movable rod is slidably installed on one side of the balance sleeve rod, and at least one end of the movable rod is inserted into the balance sleeve rod and fixedly connected to the balance block. The end of the movable rod away from the balance sleeve rod extends outward and is fixedly connected to the balance plate. The balance plate provides balance guidance for the rotating grinding disc and the balance ring.

[0009] The balancing component has two sets of first balancing magnets and second balancing magnets inside, and the opposite sides of the first balancing magnet and the second balancing magnet are made to have the same magnetism. The grinding disc is balanced and calibrated by the repulsive magnetic field force formed between the first balancing magnet and the second balancing magnet.

[0010] As a further description of the above technical solution: the repulsive magnetic field force between the first and second balancing magnets is transmitted to the balancing plate along the movable rod. The balancing plate pushes the balancing ring back to a balanced and stable rotational state. This setting can effectively attenuate the force of the grinding disc vibration, thereby effectively reducing the vibration amplitude of the grinding disc and further ensuring the stability of the grinding disc during operation.

[0011] Furthermore, the two first balancing magnets are located on the upper and lower sides of the balancing block, respectively, and the two second balancing magnets are symmetrically distributed on the upper and lower inner walls of the balancing sleeve rod.

[0012] As a further description of the above technical solution: This setting enables the magnetic forces of the two sets of first magnets and second magnets to make the balance block and balance plate form a stable state, thereby ensuring the stable performance of the grinding disc.

[0013] Furthermore, a drive motor is installed inside the housing, and the front side of the drive motor is fixedly connected to the rotating shaft via its output end. The grinding disc is fixedly mounted on the rotating shaft.

[0014] As a further description of the above technical solution: the kinetic energy generated by the drive motor drives the grinding disc to run, thereby realizing the self-rotating grinding operation.

[0015] Furthermore, the side of the balance plate away from the movable rod is provided with a number of guide balls arranged in a ring at equal intervals, and the outer side of the guide balls is in close contact with the outer wall of the balance ring. The guide balls are used to guide the rotation of the balance ring.

[0016] As a further description of the above technical solution: the setting of guide balls is beneficial to the rotation of the balance ring, while ensuring that it does not affect the operation of the balance ring during rotation, effectively avoiding obstruction to the operation of the grinding disc, and further improving its performance.

[0017] Furthermore, the balancing assembly also includes a buffer clip, the inner wall of the balancing sleeve rod has a groove, and the buffer clip is located in the inner wall of the groove of the balancing sleeve rod. A support spring is fixedly connected between the buffer clip and the inner wall of the groove.

[0018] The buffer clips are evenly distributed along the vertical central axis of the balance sleeve, and the end of the buffer clip furthest from the support spring is circular.

[0019] As a further description of the above technical solution: This setting can effectively attenuate the force of the grinding disc vibration, thereby effectively reducing the vibration amplitude of the grinding disc and further ensuring the stability of the grinding disc during operation.

[0020] Furthermore, the outer edge of the balance block is provided with several annularly spaced damping grooves, and the damping grooves are semi-circular. The size of the damping grooves is consistent with the size of the buffer card, and the round head of the buffer card is located in the damping groove.

[0021] As a further description of the above technical solution: This setting facilitates the continuous engagement of the buffer clip and the damping groove, and continuously transmits the force to the balance plate and the grinding disc, which helps to enhance the balance effect of the balance disc.

[0022] Furthermore, the protective housing is internally provided with a buffer assembly and an adjustment assembly. The buffer assembly includes a buffer sleeve fixedly mounted on the side wall of the protective housing. A buffer rod is slidably installed on one side of the buffer sleeve, and at least one end of the buffer rod is inserted into the buffer sleeve and fixedly connected to the buffer plate. Buffer springs are connected between the upper and lower sides of the buffer plate and the upper and lower inner walls of the buffer sleeve.

[0023] As a further description of the above technical solution: This setting can, on the one hand, buffer and cancel the vibration force on the balance plate, which is conducive to strengthening the magnetic balance effect of the magnetic field force between the first balance magnet and the second balance magnet; on the other hand, it can strengthen the balancing force of the balance plate on the balance ring, and further reduce the vibration amplitude of the grinding disc.

[0024] Furthermore, a conductive assembly is provided inside the protective housing, and the conductive assembly is located between the balancing assembly and the buffer assembly. The conductive assembly includes a conductive shaft, which is fixedly mounted on the inner wall of the protective housing. A conductive main rod is rotatably mounted on the conductive shaft. Telescopic connecting rods for extension and retraction are slidably mounted on both the left and right ends of the conductive main rod. The end of the conductive main rod facing the movable rod is rotatably connected to the movable rod via the telescopic connecting rod, and the end of the conductive main rod facing the buffer rod is rotatably connected to the buffer rod via the telescopic connecting rod.

[0025] As a further description of the above technical solution: as the movable rod moves toward the balance sleeve rod, the main transmission rod simultaneously drives the buffer rod to push the buffer plate, which can further improve its applicability.

[0026] Furthermore, the adjustment assembly includes an adjustment rod, one end of which extends into the interior of the buffer sleeve and is fixedly connected to the buffer plate. A lubricating elastic capsule is fixedly fitted to the end of the adjustment rod away from the buffer plate. An adjustment ball is fixedly installed on the side of the lubricating elastic capsule opposite to the balance ring. The adjustment assembly is pushed by the buffer rod to balance and adjust the vibrating grinding disc and the balance ring.

[0027] As a further description of the above technical solution: the balance ring is adjusted by pushing the adjusting ball with the adjusting rod, thereby using this force to further adjust and correct the shaking balance ring, and achieve the effect of adjusting the shaking grinding disc, so as to achieve the purpose of automatic vibration adjustment.

[0028] Furthermore, the lubricating elastic capsule is filled with lubricating fluid. The adjusting rod pushes the adjusting ball to balance the vibrating grinding disc, and the lubricating elastic capsule is squeezed to make the lubricating fluid spread from the adjusting ball to the outer circumference of the balance ring for rotational lubrication.

[0029] As a further description of the above technical solution: the injection of lubricant can reduce the coefficient of friction when the grinding disc rotates, thereby improving the stability of the grinding disc during rotation and further enhancing the grinding effect of the grinding disc on the workpiece.

[0030] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0031] 1. The composite grinding disc, the device uses the repulsive magnetic force between the first balancing magnet and the second balancing magnet to transmit the force along the movable rod to the balancing plate, and the balancing plate pushes the balancing ring to restore it to a balanced and stable rotational state. This setting can effectively attenuate the force when the grinding disc vibrates, thereby effectively reducing the vibration amplitude of the grinding disc and further ensuring the stability of the grinding disc during operation.

[0032] 2. The composite grinding disc, the device pushes the buffer plate through the buffer rod, and at the same time squeezes and stretches the buffer spring. Based on the elastic force of the buffer spring, it is transmitted along the main transmission rod to the movable rod and the balance plate. This setting can buffer and cancel the vibration force on the balance plate, which is conducive to strengthening the magnetic balance effect between the first balance magnet and the second balance magnet. On the other hand, it can strengthen the balancing force of the balance plate on the balance ring, and further reduce the vibration amplitude of the grinding disc.

[0033] 3. This composite grinding disc, through which the adjusting rod pushes the adjusting ball to adjust the balance ring, thereby using this force to further adjust and correct the shaking balance ring, and achieve the effect of adjusting the shaking grinding disc, so as to achieve the purpose of automatic shaking adjustment. At the same time, it is beneficial to the grinding disc to grind the workpiece. Furthermore, through the setting of the movable ball, it will not affect the operation of the balance ring during rotation, effectively avoiding obstruction to the operation of the grinding disc, and further improving its use effect. Attached Figure Description

[0034] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0036] Figure 2 This is the invention Figure 1 Schematic diagram of a local structure in the middle;

[0037] Figure 3 This is a schematic diagram of the grinding disc structure of the present invention;

[0038] Figure 4 This is a schematic diagram of the installation structure of the protective cover and protective housing of the present invention;

[0039] Figure 5 This is a schematic diagram of the overall structure of the protective casing of the present invention;

[0040] Figure 6 This is a schematic diagram of the internal structure of the protective casing of the present invention;

[0041] Figure 7 This is a schematic diagram of the installation structure of the balancing component and the balancing plate of the present invention;

[0042] Figure 8 This is a schematic diagram of the installation structure of the balancing component and the buffer component of the present invention;

[0043] Figure 9 This is a partial structural diagram of the balancing component of the present invention;

[0044] Figure 10 This is a partial structural diagram of the buffer component of the present invention;

[0045] Figure 11 This is the invention Figure 9 Enlarged diagram of part A in the middle.

[0046] Legend:

[0047] 10. Housing; 11. Protective cover; 12. Grinding disc; 121. Balance ring; 13. Drive motor; 131. Rotating shaft;

[0048] 20. Protect the casing;

[0049] 30. Balancing assembly; 31. Balancing sleeve; 32. Movable rod; 33. Balancing block; 331. Damping groove; 34. First balancing magnet; 35. Second balancing magnet; 36. Buffer clip; 361. Support spring;

[0050] 40. Balance plate; 41. Guide ball bearings;

[0051] 50. Conducting assembly; 51. Conducting shaft; 52. Conducting main rod; 53. Telescopic connecting rod;

[0052] 60. Buffer assembly; 61. Buffer sleeve; 62. Buffer rod; 63. Buffer plate; 64. Buffer spring;

[0053] 70. Adjustment component; 71. Adjustment rod; 72. Lubricating elastic capsule; 73. Adjustment ball. Detailed Implementation

[0054] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0055] Please refer to Figures 1 to 9A composite grinding disc includes a housing 10, a protective cover 11 disposed on the front side of the housing 10, and a grinding disc 12 disposed in the protective cover 11. It also includes a protective housing 20 disposed on the inner wall of the protective cover 11, and a balancing assembly 30 and a balancing plate 40 disposed inside the protective housing 20. A balancing ring 121 for balancing and stabilizing is fixedly disposed on one side of the grinding disc 12 opposite to the protective cover 11, and the balancing ring 121 is located within the protective housing 20. The inner side of the balancing plate 40 contacts the outer wall of the balancing ring 121. The balancing assembly 30 includes a balancing sleeve rod 31 fixedly mounted on the side wall of the protective housing 20. A movable rod 32 is slidably mounted on one side of the balancing sleeve rod 31, and one end of the movable rod 32 is at least partially inserted into the balancing sleeve rod 31 and fixedly connected to a balancing block 33. The end of the movable rod 32 away from the balancing sleeve rod 31 extends outward and connects with the balancing plate 40. The 0-phase fixed connection is used to balance and guide the rotating grinding disc 12 and the balance ring 121 through the balance plate 40. The balance component 30 is equipped with two sets of first balance magnets 34 and second balance magnets 35. The opposing sides of the first balance magnets 34 and second balance magnets 35 are made to have the same magnetism. The repulsive magnetic field force formed between the first balance magnets 34 and second balance magnets 35 is used to balance and calibrate the grinding disc 12. Through the action of the repulsive magnetic field force between the first balance magnets 34 and second balance magnets 35, the force is transmitted to the balance plate 40 along the movable rod 32. The balance plate 40 pushes the balance ring 121 to restore it to a balanced and stable rotation state. This setting can effectively attenuate the force when the grinding disc 12 vibrates, thereby effectively reducing the vibration amplitude of the grinding disc 12 and further ensuring the stability of the grinding disc 12 during operation.

[0056] Please refer to Figure 9 Two first balancing magnets 34 are located on the upper and lower sides of the balancing block 33, respectively, and two second balancing magnets 35 are located on the upper and lower inner walls of the balancing sleeve rod 31 in a symmetrical distribution. This arrangement enables the magnetic force of the two sets of first magnets and second magnets to make the balancing block 33 and the balancing plate 40 form a stable state, thereby ensuring the stable performance of the grinding disc 12.

[0057] Please refer to Figures 1 to 4 The housing 10 is equipped with a drive motor 13. The front of the drive motor 13 is fixedly connected to the rotating shaft 131 via the output end. The grinding disc 12 is fixedly mounted on the rotating shaft 131. The drive motor 13 generates kinetic energy to drive the grinding disc 12 to run, thereby realizing the self-rotating grinding operation.

[0058] Please refer to Figure 8On the side of the balance plate 40 away from the movable rod 32, there are several guide balls 41 arranged in a ring at equal intervals. The outer side of the guide balls 41 is in close contact with the outer wall of the balance ring 121. The guide balls 41 are used to guide the rotation of the balance ring 121. The arrangement of the guide balls 41 is beneficial to the rotation of the balance ring 121, and at the same time, it does not affect the operation of the balance ring 121 during rotation, effectively avoiding obstruction to the operation of the grinding disc 12, and further improving its performance.

[0059] Please refer to Figures 9 to 11 The balancing assembly 30 also includes a buffer clip 36. The inner wall of the balancing sleeve 31 has a groove, and the buffer clip 36 is located in the inner wall of the groove of the balancing sleeve 31. A support spring 361 is fixedly connected between the buffer clip 36 and the inner wall of the groove. The buffer clip 36 is evenly distributed along the vertical central axis of the balancing sleeve 31. The end of the buffer clip 36 away from the support spring 361 is circular. During the movement of the balancing block 33, it will continuously contact the buffer clip 36. The resistance generated when the buffer clip 36 is inserted into the damping groove 331 is transmitted along the movable rod 32 to the balancing plate 40. The balancing plate 40 pushes the balancing ring 121 to return to a balanced and stable rotational state. This setting can effectively attenuate the force when the grinding disc 12 vibrates, thereby effectively reducing the vibration amplitude of the grinding disc 12 and further ensuring the stability of the grinding disc 12 during operation.

[0060] Please refer to Figure 11 The outer edge of the balance block 33 is provided with several annularly spaced damping grooves 331, and the damping grooves 331 are semi-circular. The size of the damping grooves 331 is consistent with the size of the buffer clip 36. The round head of the buffer clip 36 is located in the damping groove 331. This arrangement is conducive to the continuous engagement of the buffer clip 36 with the damping groove 331, and the continuous transmission of the force to the balance plate 40 and the grinding disc 12, which is conducive to enhancing the balance effect of the balance disc.

[0061] Please refer to Figures 6 to 10The protective housing 20 is internally equipped with a buffer assembly 60 and an adjustment assembly 70. The buffer assembly 60 includes a buffer sleeve 61 fixedly mounted on the side wall of the protective housing 20. A buffer rod 62 is slidably mounted on one side of the buffer sleeve 61, and one end of the buffer rod 62 is at least partially inserted into the buffer sleeve 61 and fixedly connected to the buffer plate 63. Buffer springs 64 are connected between the upper and lower sides of the buffer plate 63 and the upper and lower inner walls of the buffer sleeve 61. The spring force of the buffer springs 64 is transmitted along the main transmission rod 52 to the movable rod 32 and the balance plate 40. This arrangement can buffer and cancel the vibration force on the balance plate 40, which is beneficial to strengthening the magnetic balance effect between the first balance magnet 34 and the second balance magnet 35. On the other hand, it can strengthen the balancing force of the balance plate 40 on the balance ring 121, and further reduce the vibration amplitude of the grinding disc 12.

[0062] Please refer to Figures 6 to 8 The protective housing 20 is equipped with a transmission component 50, which is located between the balance component 30 and the buffer component 60. The transmission component 50 includes a transmission shaft 51, which is fixedly mounted on the inner wall of the protective housing 20. A transmission main rod 52 is rotatably mounted on the transmission shaft 51. Telescopic connecting rods 53 for extension and retraction are slidably mounted on both the left and right ends of the transmission main rod 52. The end of the transmission main rod 52 facing the movable rod 32 is rotatably connected to the movable rod 32 via the telescopic connecting rod 53. The end of the transmission main rod 52 facing the buffer rod 62 is rotatably connected to the buffer rod 62 via the telescopic connecting rod 53. As the movable rod 32 moves toward the balance sleeve rod 31, the transmission main rod 52 simultaneously drives the buffer rod 62 to push the buffer plate 63, thereby enhancing the buffering effect of the balance plate 40.

[0063] Please refer to Figure 10 The adjustment assembly 70 includes an adjustment rod 71. One end of the adjustment rod 71 extends into the interior of the buffer sleeve 61 and is fixedly connected to the buffer plate 63. A lubricating elastic capsule 72 is fixedly fitted to the end of the adjustment rod 71 away from the buffer plate 63. An adjusting ball 73 is fixedly installed on the side of the lubricating elastic capsule 72 opposite to the balance ring 121. The adjustment assembly 70 is pushed by the buffer rod 62 to balance the vibrating grinding disc 12 and the balance ring 121. The adjusting ball 73 is pushed by the adjustment rod 71 to adjust the balance ring 121. This force can be used to further adjust and correct the vibrating balance ring 121 and adjust the vibrating grinding disc 12, so that it achieves the purpose of automatic vibration adjustment. At the same time, it is beneficial for the grinding disc 12 to grind the workpiece. Furthermore, the setting of the movable ball does not affect the operation of the balance ring 121 during rotation, effectively avoiding obstruction to the operation of the grinding disc 12 and further improving its performance.

[0064] Please refer to Figure 10The lubricating elastic capsule 72 contains lubricating fluid. The adjusting rod 71 pushes the adjusting ball 73 to balance the vibrating grinding disc 12. By squeezing the lubricating elastic capsule 72, the lubricating fluid is spread from the adjusting ball 73 onto the outer circumference of the balance ring 121 for rotational lubrication. While adjusting the grinding disc 12 by pushing the adjusting ball 73 with the adjusting rod 71, the lubricating elastic capsule 72 is also squeezed. The force of the squeeze causes the lubricating fluid inside the lubricating elastic capsule 72 to be spread along the adjusting ball 73 onto the outer circumference of the balance ring 121. The injection of lubricating fluid can reduce the coefficient of friction when the grinding disc 12 rotates, thereby improving the stability of the grinding disc 12 during rotation and further enhancing the grinding effect of the grinding disc 12 on the workpiece.

[0065] The specific usage and function of this embodiment are as follows:

[0066] Working principle: In use, the grinding disc 12 is mounted on the rotating shaft 131, and the balance ring 121 is secured in the protective housing 20, thus locking the grinding disc 12 in place. By starting the switch, the drive motor 13 generates kinetic energy to drive the grinding disc 12, achieving self-rotating grinding. Since mechanical grinding is used, vibration is inevitable during operation. When the grinding disc 12 vibrates, it causes the balance ring 121 to vibrate synchronously. The force of the vibrating balance ring 121 pushes the balance plate 40, compressing and pushing it, causing the movable rod 32 to push the balance block 33 to move synchronously, thus enabling the grinding disc 12 to rotate. The magnetic force between the first balancing magnet 34 and the second balancing magnet 35 changes, and the balance block 33 will continuously contact the buffer card 36 during the movement. The resistance generated when the buffer card 36 is inserted into the damping groove 331, as well as the repulsive magnetic force between the first balancing magnet 34 and the second balancing magnet 35, are used to transmit the force along the movable rod 32 to the balance plate 40. The balance plate 40 pushes the balance ring 121 to return to a balanced and stable rotation state. This setting can effectively attenuate the force when the grinding disc 12 vibrates, thereby effectively reducing the vibration amplitude of the grinding disc 12 and further ensuring the stability of the grinding disc 12 during operation.

[0067] In addition, as the movable rod 32 moves toward the balance sleeve rod 31, it simultaneously uses the transmission main rod 52 to drive the buffer rod 62 to push the buffer plate 63, and at the same time squeezes and stretches the buffer spring 64. Based on the elastic force of the buffer spring 64, it is transmitted along the transmission main rod 52 to the movable rod 32 and the balance plate 40. This setting can buffer and cancel the vibration force on the balance plate 40, which is conducive to strengthening the magnetic balance effect of the magnetic field force between the first balance magnet 34 and the second balance magnet 35. On the other hand, it can strengthen the balancing force of the balance plate 40 on the balance ring 121, and further reduce the vibration amplitude of the grinding disc 12.

[0068] Furthermore, as the buffer rod 62 pushes the buffer plate 63 to move, it simultaneously drives the adjusting rod 71 to move as well. The adjusting rod 71 then pushes the adjusting ball 73 to adjust the balance ring 121. This force further corrects the vibration of the balance ring 121 and adjusts the vibration of the grinding disc 12, achieving automatic vibration adjustment. This also facilitates the grinding of the workpiece by the grinding disc 12. Moreover, the movable ball ensures that it does not affect the rotation of the balance ring 121. This effectively avoids hindering the operation of the grinding disc 12 and further improves its performance. In addition, while the adjusting rod 71 pushes the adjusting ball 73 to adjust the grinding disc 12, it also squeezes the lubricating elastic capsule 72. The force of the squeeze causes the lubricant inside the lubricating elastic capsule 72 to be coated along the adjusting ball 73 onto the outer circumference of the balance ring 121. The injection of lubricant can reduce the coefficient of friction when the grinding disc 12 rotates, thereby improving the stability of the grinding disc 12 when it rotates and further improving the grinding effect of the grinding disc 12 on the workpiece.

[0069] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A composite grinding disc, comprising a housing (10), a protective cover (11) disposed on the front side of the housing (10), and a grinding disc (12) disposed in the protective cover (11), characterized in that: It also includes a protective housing (20) disposed on the inner wall of the protective cover (11), and a balancing assembly (30) and a balancing plate (40) disposed inside the protective housing (20). The grinding disc (12) is fixedly provided with a balancing ring (121) on one side opposite the protective cover (11) for balancing and stabilizing, and the balancing ring (121) is located in the protective housing (20); The inner side of the balance plate (40) is in contact with the outer wall of the balance ring (121). The balance assembly (30) includes a balance sleeve rod (31) fixedly mounted on the side wall of the protective housing (20). A movable rod (32) is slidably installed on one side of the balance sleeve rod (31). At least one end of the movable rod (32) is inserted into the balance sleeve rod (31) and fixedly connected to the balance block (33). The end of the movable rod (32) away from the balance sleeve rod (31) extends outward and is fixedly connected to the balance plate (40). The balance plate (40) provides balance guidance for the rotating grinding disc (12) and the balance ring (121). The balancing component (30) is internally provided with two sets of first balancing magnets (34) and second balancing magnets (35), and the opposite sides of the first balancing magnets (34) and the second balancing magnets (35) are provided to have the same magnetism. The grinding disc (12) is balanced and calibrated by the repulsive magnetic field force formed between the first balancing magnets (34) and the second balancing magnets (35). The protective housing (20) is internally provided with a buffer assembly (60) and an adjustment assembly (70). The buffer assembly (60) includes a buffer sleeve (61) fixedly mounted on the side wall of the protective housing (20). A buffer rod (62) is slidably installed on one side of the buffer sleeve (61), and one end of the buffer rod (62) is at least partially inserted into the buffer sleeve (61) and fixedly connected to the buffer plate (63). Buffer springs (64) are connected between the upper and lower sides of the buffer plate (63) and the upper and lower inner walls of the buffer sleeve (61). The protective housing (20) is provided with a transmission component (50) inside, and the transmission component (50) is located between the balance component (30) and the buffer component (60). The transmission component (50) includes a transmission shaft (51), which is fixedly mounted on the inner wall of the protective housing (20). A transmission main rod (52) is rotatably mounted on the transmission shaft (51). Telescopic connecting rods (53) for extension and retraction are slidably mounted on both the left and right ends of the transmission main rod (52). The end of the transmission main rod (52) facing the movable rod (32) is rotatably connected to the movable rod (32) by the telescopic connecting rod (53). The end of the transmission main rod (52) facing the buffer rod (62) is rotatably connected to the buffer rod (62) by the telescopic connecting rod (53). The adjustment assembly (70) includes an adjustment rod (71), one end of which extends into the interior of the buffer sleeve (61) and is fixedly connected to the buffer plate (63). A lubricating elastic capsule (72) is fixedly fitted at the end of the adjustment rod (71) away from the buffer plate (63). An adjustment ball (73) is fixedly installed on the side of the lubricating elastic capsule (72) opposite to the balance ring (121). The adjustment assembly (70) is pushed by the buffer rod (62) to balance and adjust the vibrating grinding disc (12) and the balance ring (121).

2. The composite grinding disc according to claim 1, characterized in that: The two first balancing magnets (34) are located on the upper and lower sides of the balancing block (33), respectively, and the two second balancing magnets (35) are located on the upper and lower inner walls of the balancing sleeve (31) in a symmetrical distribution.

3. A composite grinding disc according to claim 1, characterized in that: The housing (10) is equipped with a drive motor (13). The front side of the drive motor (13) is fixedly connected to the rotating shaft (131) via its output end. The grinding disc (12) is fixedly mounted on the rotating shaft (131).

4. A composite grinding disc according to claim 1, characterized in that: The balance plate (40) has a number of guide balls (41) arranged in a ring at equal intervals on the side away from the movable rod (32), and the outer side of the guide balls (41) is in contact with the outer wall of the balance ring (121). The guide balls (41) are used to guide the rotation of the balance ring (121).

5. A composite grinding disc according to claim 1, characterized in that: The balancing assembly (30) also includes a buffer clip (36). The inner wall of the balancing sleeve (31) is provided with a groove, and the buffer clip (36) is located in the inner wall of the groove of the balancing sleeve (31). A support spring (361) is fixedly connected between the buffer clip (36) and the inner wall of the groove. The buffer clips (36) are evenly distributed along the vertical central axis of the balance sleeve (31), and the end of the buffer clips (36) away from the support spring (361) is circular.

6. A composite grinding disc according to claim 5, characterized in that: The outer edge of the balance block (33) is provided with a number of annular equidistant damping grooves (331), and the damping grooves (331) are semi-circular. The size of the damping grooves (331) is consistent with the size of the buffer card (36), and the round head of the buffer card (36) is located in the damping grooves (331).

7. A composite grinding disc according to claim 1, characterized in that: The lubricating elastic capsule (72) is filled with lubricating fluid. The adjusting rod (71) pushes the adjusting ball (73) to balance the vibrating grinding disc (12). The lubricating fluid is applied to the outer circumference of the balance ring (121) by squeezing the lubricating elastic capsule (72) and rotating and lubricating it.

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