Annular magnetic core multi-face machining and grinding device based on magnetic core machining

Abstract

The invention relates to the related technical field of magnetic core machining, in particular to an annular magnetic core multi-face machining and grinding device based on magnetic core machining, which comprises a grinding base, an arc-shaped grinding plate and an arc-shaped grinding roller, a fixing frame is fixedly mounted at the top of the grinding base through a side plate, and a torsion lifting assembly is arranged in the fixing frame; the torsion lifting assembly is used for driving the arc-shaped grinding roller to conduct grinding in the annular magnetic core, a torsion ring arranged in the torsion lifting assembly drives the arc-shaped grinding roller to conduct torsion and lifting motion in the annular magnetic core, a fixed disc is arranged at the top of the arc-shaped grinding roller, and an annular expansion assembly is arranged in the fixed disc. The instantaneous contact angle of abrasive particles and a workpiece is changed by rotating the arc-shaped grinding roller to ascend, descend and twist, the grinding track is changed into a complex and irregular space curve through superposition of various motions, the single-direction texture is effectively disordered and eliminated, and the extremely high smoothness of the annular magnetic core is obtained.

Description

Technical Field

[0001] This invention relates to the field of magnetic core processing technology, and in particular to a multi-faceted processing and polishing device for toroidal magnetic cores based on magnetic core processing. Background Technology

[0002] As the core component of magnetic elements such as inductors and transformers, the geometric accuracy and surface quality of toroidal magnetic cores directly determine the electrical performance and overall reliability of the components. During the manufacturing process, the sintered toroidal magnetic cores need to be polished on their inner ring, outer ring, and end face to remove burrs and flash, and to obtain precise dimensions and a smooth surface.

[0003] Current processes generally employ a step-by-step grinding method for the inner and outer rings. This involves grinding the inner ring first, then changing the fixture or transferring it to another machine for grinding the outer ring. This asynchronous processing mode not only results in long production cycles and low efficiency, but also inevitably introduces positioning errors during the secondary clamping process. This leads to increased concentricity deviation between the inner and outer rings of the magnetic core, severely affecting the performance consistency of the final product. Furthermore, the grinding methods are mostly single-dimensional rotary grinding or fixed-path feed grinding. Whether it is the inner or outer ring, the contact trajectory between the grinding tool and the magnetic core surface is relatively fixed, which easily forms unidirectional, regular grinding marks on the surface. If the fine debris generated during the grinding process is not removed in time, it will accumulate on the surface of the magnetic core and in the grinding tool. These residual debris will not only scratch the already polished surface, causing secondary damage, but will also interfere with the effective contact between the grinding tool and the workpiece surface in subsequent grinding, resulting in uneven grinding pressure, thus significantly affecting the final grinding quality and yield. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, the present invention provides a multi-faceted processing and polishing device for ring magnetic cores based on magnetic core processing.

[0005] To solve the above technical problems, the present invention provides the following technical solution: a multi-faceted grinding device for annular magnetic cores based on magnetic core processing, comprising a grinding base, an arc-shaped grinding plate, and an arc-shaped grinding roller. A fixed frame is fixedly installed on the top of the grinding base via a side plate. A torsional lifting assembly is provided inside the fixed frame. The torsional lifting assembly is used to drive the arc-shaped grinding roller to perform grinding inside the annular magnetic core. A torsional ring in the torsional lifting assembly drives the arc-shaped grinding roller to perform torsional and lifting movements inside the annular magnetic core. The torsional lifting assembly includes a first motor, a U-shaped fixed plate, and a fixed column. A fixed disc is provided on the top of the arc-shaped grinding roller. An annular expansion assembly is provided inside the fixed disc. The annular expansion assembly is used to drive the arc-shaped grinding roller to fit and grind against the inner wall of the annular magnetic core. An L-shaped expansion rod in the annular expansion assembly drives the arc-shaped grinding roller to perform expansion and contraction movements on a limiting guide rail. The top of the grinding base is fixedly mounted with a base frame via a support bracket. The base frame is equipped with a side swing assembly, which is used to drive the arc-shaped grinding plate to reciprocate and grind the outer circumference of the annular magnetic core. The swing block in the side swing assembly drives the arc-shaped grinding plate to reciprocate along the arc-shaped swing rod. The fixed frame is also equipped with a blower cleaning assembly, which is used to clean the grinding dust on the outer circumference of the annular magnetic core. The blower cleaning assembly includes a cleaning cylinder and a rotating disk.

[0006] As a preferred embodiment of the present invention, the torsion lifting assembly further includes an arc-shaped torsion plate fixedly installed on the outer periphery of the torsion ring, a base plate fixedly installed around the top of the U-shaped fixed plate, a base rotating rod movably connected to each base plate, a fixed column fixedly installed at the inner top center of the fixed frame, the torsion ring movably sleeved on the outer periphery of the fixed column, a torsion block movably connected to the top of the arc-shaped torsion plate at the end away from the fixed column, a connecting plate fixedly installed at the end of the base rotating rod close to the fixed column, a connecting rotating rod fixedly installed on the connecting plate, and the connecting rotating rod movably passing through the torsion block.

[0007] The bottom of the U-shaped fixed plate is fixedly installed on the top of the side plate by an arc-shaped support foot. The first motor is fixedly installed on the top of the side plate by bolts. The base rotating rod near one end of the side plate is fixedly installed on the output end of the first motor. Movable plates are fixedly installed on the bottom of the two arc-shaped torsion plates. An L-shaped motor plate is fixedly installed on the bottom of the movable plate. A motor cover is fixedly installed on the bottom of the L-shaped motor plate. A second motor is fixedly installed inside the motor cover. The output end of the second motor is fixedly installed on the top of the fixed disc by a rotating shaft.

[0008] As a preferred embodiment of the present invention, the annular expansion assembly further includes a first electric telescopic rod and a support turntable. The support turntable is movably connected to the center of the inner bottom of the fixed disc via a rotating shaft. Limiting guide rails are fixedly installed around the inner perimeter of the fixed disc by bolts. Limiting guide blocks are slidably connected to the limiting guide rails. Connecting discs are fixedly installed on the limiting guide blocks, and an arc-shaped grinding roller is fixedly installed at the bottom center of the connecting disc.

[0009] The top of the support turntable is movably connected to an L-shaped expansion rod, which is movably connected to a connecting plate. The first electric telescopic rod is fixedly installed inside the fixed disc, and the output end of the first electric telescopic rod is fixedly installed on one of the connecting plates. The fixed disc is also equipped with a battery pack that supplies power to the first electric telescopic rod. The fixed disc has a grinding opening that matches the arc-shaped grinding roller, and the arc-shaped grinding roller moves within the grinding opening.

[0010] As a preferred embodiment of the present invention, the side swing assembly further includes a connecting rotating rod, a limiting base, and a loop swing plate. The limiting base is fixedly installed on the inner bottom of the base frame by bolts. The limiting base has a limiting groove, and a limiting slider is slidably connected in the limiting groove. A loop swing plate is fixedly installed on the top of the limiting slider. The connecting rotating rod is movably connected to the top of the base frame. An arc-shaped actuating plate is fixedly installed at the bottom of the connecting rotating rod. A swing column is installed at the bottom of the arc-shaped actuating plate, and the swing column moves within the loop swing plate. The arc-shaped swing rod is fixedly installed at the inner bottom of the base frame, and the swing block moves through the outer periphery of the arc-shaped swing rod.

[0011] The outer periphery of the spiral swing plate is movably sleeved with a T-shaped motion rod, which is movably connected to the swing block. A hydraulic telescopic rod is fixedly installed on the side of the swing block away from the spiral swing plate. The hydraulic telescopic rod movably passes through the movable slot opened in the base frame, and the arc-shaped grinding plate is fixedly installed at the top of the hydraulic telescopic rod. A first bevel gear is fixedly installed at the top of the connecting rod, and a second bevel gear is fixedly installed on the base rotating rod located on both sides adjacent to the first motor. The first bevel gear and the second bevel gear are movably meshed. A support ring is fixedly installed on the side plate, and the connecting rotating rod movably passes through the support ring.

[0012] As a preferred embodiment of the present invention, the blower cleaning assembly further includes a cleaning seat disposed at the bottom of the fixed frame, a cleaning cylinder fixedly mounted on a support ring, a piston plate movably disposed inside the cleaning cylinder, a piston rod fixedly mounted on the top of the piston plate, and the piston rod extending through to the outer side of the top of the cleaning cylinder, a rotating disk fixedly mounted on a base rotating rod away from the first motor, a hinge rod movably connected to the rotating disk via a limiting ring, the bottom end of the hinge rod being connected to the top end of the piston rod via a hinge, a cleaning seat fixedly mounted on a side plate by bolts, and several cleaning nozzles fixedly mounted on the bottom of the cleaning seat, an air inlet pipe and an air outlet pipe disposed at the bottom of the cleaning cylinder, and the air outlet pipe being connected to the cleaning seat.

[0013] As a preferred embodiment of the present invention, a clamping frame is fixedly installed at the bottom of the grinding base. The clamping frame is provided with an alignment and clamping assembly for clamping and positioning the annular magnetic core. The alignment and clamping assembly includes a screw and a second electric telescopic rod. A bidirectional motor is fixedly installed at the center of the clamping frame. The output end of the bidirectional motor is connected to a clamping block through a screw. The top of the clamping block is connected to an arc-shaped clamping plate for aligning and clamping the annular magnetic core through a clamping rod. The top of the arc-shaped clamping plate is connected to a second electric telescopic rod through an arc-shaped rod. The bottom of the second electric telescopic rod is connected to a clamping disc for pressing the top of the annular magnetic core. The clamping block is movably inserted through the positioning rods at both ends inside the clamping frame. The clamping rod is movably inserted through the clamping groove opened at the top of the clamping frame.

[0014] Compared with the prior art, the beneficial effects that this invention can achieve are: In this invention, the torsion lifting component combined with the annular expansion component transforms the grinding trajectory from a simple circumference into a complex spatial spiral curve composed of rotation, revolution, lifting, and oscillation. This ensures that the arc-shaped grinding roller can make multi-angle, irregular contact with every point on the inner wall of the annular magnetic core, eliminating directional grinding marks that may be generated by a single motion mode, thereby achieving higher surface smoothness. The combination of lifting and oscillation motions allows the arc-shaped grinding roller to effectively reach and polish the arc-shaped transition area at the port of the inner ring of the annular magnetic core. This area is easily overlooked under traditional pure rotational grinding, but now, through precise motion control, it can achieve the same smoothness as the inner wall. The superposition of multi-dimensional motions is equivalent to completing multiple processes in a single clamping, reducing the need for subsequent finishing processes. This not only improves grinding efficiency but also greatly ensures the consistency of processing quality.

[0015] In this invention, the connecting rod is driven to rotate by the connecting plate in the torsion lifting assembly. The connecting rod rotates inside the torsion block, and the torsion plate on the movable torsion block, together with the torsion ring fixed thereon, achieves a specific movement outside the fixed column. That is, while the torsion ring is rising and falling along the axis of the fixed column, it also completes a reciprocating rotational motion around the axis. The torsion ring is connected to the L-shaped motor plate through the movable plate, thereby accurately transmitting the "lifting-torsion" composite motion to the arc-shaped grinding roller below it. The movement of the arc-shaped grinding roller in the inner cavity of the annular magnetic core is directly driven by the second motor to achieve high-speed rotation for basic grinding. It also performs slow revolution, reciprocating lifting and falling, and axial swing around the inner ring axis synchronously with the L-shaped motor plate, achieving full coverage grinding of the inner ring of the annular magnetic core.

[0016] In this invention, the initial power is provided by the electric telescopic rod in the annular expansion assembly. The linear motion of the first electric telescopic rod is transmitted to one of the connecting discs. Under the strict constraint of the limiting guide rail and the limiting guide block, the connecting disc performs a stable, non-rotating axial translation. The axial linear motion of the connecting disc is converted into the rotational motion of a supporting turntable through the L-shaped expansion rod hinged to it, which drives the synchronous movement of multiple sets of L-shaped expansion rods evenly distributed in the circumferential direction. Each L-shaped expansion rod drives the corresponding connecting disc, which also moves under the constraint of its respective limiting guide rail. The linear motion of the connecting disc is transmitted to the arc-shaped grinding roller below it. The arc-shaped grinding roller expands radially outward or contracts radially inward along the grinding opening, accurately converting the single axial linear input into the synchronous, stable, and symmetrical radial telescopic motion of multiple sets of arc-shaped grinding rollers. By controlling the stroke of the electric telescopic rod, the final expansion diameter of the grinding roller can be accurately set, so that it can adaptively fit the inner wall of the annular magnetic core with different inner diameters and apply stable pressure, thereby completing an efficient and consistent grinding operation.

[0017] In this invention, the continuous rotational motion is converted into a stable linear reciprocating motion of the piston rod within the cleaning cylinder by the rotating disk, limiting ring, hinge rod, and hinge component in the blower cleaning assembly. The piston rod drives the piston plate inside the cleaning cylinder to rise and fall regularly. The compressed airflow is forced out through the air outlet pipe and delivered to the cleaning seat, where it is finally precisely sprayed out by the cleaning nozzles arranged at key work positions. The airflow cleaning and polishing actions are carried out simultaneously, achieving "polishing while cleaning." This fundamentally avoids secondary scratches on the processed surface caused by residual debris and prevents debris accumulation from affecting the polishing tools, directly improving the consistency of polishing quality. The cleaning nozzles can be strategically arranged to achieve targeted cleaning of key areas such as the outer periphery of the annular magnetic core, the working surface of the arc-shaped polishing plate, and the arc-shaped polishing roller itself. This targeted cleaning efficiency is far higher than overall dust extraction and can effectively cool the polishing area.

[0018] In this invention, multiple independent annular magnetic cores are integrated into a rigid "integrated workpiece" by aligning and clamping components, establishing a precise process benchmark for subsequent synchronous grinding of the inner and outer rings, effectively avoiding dimensional deviations caused by individual loosening. The arc-shaped clamping plate contacts the outer periphery of the magnetic core with an arc surface, which can disperse clamping stress and prevent pressure damage or impact on the surface of the brittle magnetic core. Both clamping force and clamping force can be precisely adjusted by the electronic control system to adapt to magnetic cores of different materials and sizes. The second electric telescopic rod drives the clamping disc to provide stable clamping and support for the annular magnetic core.

[0019] In this invention, the arc-shaped grinding roller rotates and grinds inside the annular magnetic core under the direct drive of the second motor, forming the basic cutting force and realizing the core motion of the grinding function. During the processing, the arc-shaped grinding roller is given an axial reciprocating oscillation. The oscillation effectively changes the instantaneous contact angle between the abrasive grains and the workpiece surface. The superposition of multiple motions makes the grinding trajectory change from a simple circumferential line to a complex irregular spatial curve. This cross-shaped mesh grinding mark can effectively disrupt and eliminate single-direction texture, significantly reduce surface roughness, and thus obtain extremely high inner wall smoothness. The combination of revolution and lifting ensures uniform grinding of the entire inner wall axial height. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the arc-shaped grinding plate of the present invention; Figure 3 This is a schematic diagram of the structure of the spiral-shaped fixing plate of the present invention; Figure 4 This is a schematic diagram of the cleaning cylinder of the present invention; Figure 5 This is a schematic diagram of the rotating disk of the present invention; Figure 6 This is a schematic diagram of the structure of the L-shaped motor board of the present invention; Figure 7 This is a schematic diagram of the internal structure of the fixed disk of the present invention; Figure 8 This is a schematic diagram of the structure of the grinding base of the present invention; Figure 9 This is a schematic diagram of the internal structure of the base frame of the present invention; Figure 10 This is a schematic diagram of the clamping frame of the present invention.

[0021] The components include: 10. Grinding base; 11. Arc-shaped grinding plate; 12. Arc-shaped grinding roller; 13. Side plate; 14. Fixing frame; 15. Support ring; 16. Support frame; 17. Arc-shaped support foot; 20. U-shaped fixing plate; 21. Fixing column; 22. Torsion ring; 23. Arc-shaped torsion plate; 24. Base plate; 25. Base rotating rod; 26. Torsion block; 27. Connecting plate; 28. Connecting rotating rod; 29. ​​First motor; 30. L-shaped motor plate; 31. Motor cover; 32. Second motor; 33. Movable plate; 40. Fixed disc; 41. Supporting turntable; 42. Limiting guide rail; 43. Limiting guide block; 44. Connecting disc; 45. L-shaped expansion rod; 46. First electric telescopic rod; 47. Battery pack; 48. Grinding opening; 50. Base frame; 51. Arc-shaped swing rod. 52. Swing block; 53. Limiting base; 54. Limiting groove; 55. Limiting slider; 56. Recurved swing plate; 57. T-shaped motion rod; 58. Hydraulic telescopic rod; 59. Movable groove; 60. Connecting rotating rod; 61. First bevel gear; 62. Second bevel gear; 63. Arc-shaped actuating plate; 64. Swing column; 70. Cleaning cylinder; 71. Piston plate; 72. Piston rod; 73. Rotary disk; 74. Limiting ring; 75. Hinge rod; 76. Cleaning seat; 77. Cleaning nozzle; 78. Air inlet pipe; 79. Air outlet pipe; 80. Clamping frame; 81. Screw; 82. Second electric telescopic rod; 83. Bidirectional motor; 84. Clamping block; 85. Clamping rod; 86. Arc-shaped clamping plate; 87. Pressing disc; 88. Positioning rod; 89. Clamping groove; 90. Arc-shaped rod. Detailed Implementation

[0022] To make the technical means, creative features, and achieved objectives and effects of this invention easier to understand, the invention is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this invention. Unless otherwise specified, the experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified.

[0023] Example: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, a multi-faceted grinding device for annular magnetic cores based on magnetic core processing includes a grinding base 10, an arc-shaped grinding plate 11, and an arc-shaped grinding roller 12. A fixing frame 14 is fixedly installed on the top of the grinding base 10 via a side plate 13. A torsion lifting assembly is installed inside the fixing frame 14. The torsion lifting assembly drives the arc-shaped grinding roller 12 to perform grinding inside the annular magnetic core. A torsion ring 22 in the torsion lifting assembly drives the arc-shaped grinding roller 12 to perform torsion and lifting movements inside the annular magnetic core. The torsion lifting assembly includes a first motor 29, a U-shaped fixing plate 20, and a fixing column 21. The torsion lifting assembly also includes an arc-shaped torsion plate 23 fixedly installed on the outer periphery of the torsion ring 22. A base plate 24 is fixedly installed around the top of the U-shaped fixing plate 20. Each base plate 24 is movably connected to a base rotating rod 25. A fixed column 21 is fixedly installed at the center of the inner top of the fixed frame 14. A torsion ring 22 is movably sleeved on the outer periphery of the fixed column 21. A torsion block 26 is movably connected to the top of the arc-shaped torsion plate 23 at the end away from the fixed column 21. The torsion block 26 has a square structure. The arc-shaped torsion plate and the connecting rotating rod 28 are connected and linked through the torsion block 26. A connecting plate 27 is fixedly installed at the end of the base rotating rod 25 near the fixed column 21. A connecting rotating rod 28 is fixedly installed on the connecting plate 27. The connecting rotating rod 28 movably passes through the torsion block 26. The arc-shaped torsion plate 23 drives the torsion block 26 to move. The torsion block 26 drives the base rotating rod 25 on the base plate 24 to rotate through the connecting rotating rod 28 and the connecting plate 27.

[0024] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The bottom of the U-shaped fixed plate 20 is fixedly installed on the top of the side plate 13 by the arc-shaped support foot 17. The first motor 29 is fixedly installed on the top of the side plate 13 by bolts. The base rotating rod 25 near the side plate 13 is fixedly installed on the output end of the first motor 29. The bottom of the two arc-shaped torsion plates 23 is fixedly installed with movable plates 33. The movable plates 33 are respectively installed on the bottom of the two arc-shaped torsion plates 23 near the first motor 29 and away from the first motor 29. The bottom of the movable plate 33 is fixedly installed with an L-shaped motor plate 30. The bottom of the L-shaped motor plate 30 is fixedly installed with a motor cover 31. The inside of the motor cover 31 is fixedly installed with a second motor 32. The output end of the second motor 32 is fixedly installed on the top of the fixed disc 40 by a rotating shaft.

[0025] See Figure 1 , Figure 2 , Figure 3, Figure 4 , Figure 5 and Figure 6 The first motor 29 drives one of the base rotating rods 25 to rotate. The base rotating rod 25 drives the connecting rotating rod 28 to rotate via the connecting plate 27. The rotating rod rotates on the torsion block 26, and the torsion block 26 also rotates on the arc-shaped torsion plate 23. This causes the arc-shaped torsion plate 23 and the torsion ring 22 to descend on the fixed column 21 while also rotating. This results in the torsion ring 22 undergoing a combination of back-and-forth rotation and lifting motion around the outer periphery of the fixed column 21. The torsion ring 22, through the movable plate 33, drives the arc-shaped grinding roller 12 under the L-shaped motor plate 30 to also rotate and lift synchronously within the inner ring of the annular magnetic core. The arc-shaped grinding roller 12 moves up and down and twists back and forth inside the annular magnetic core. At this time, the arc-shaped grinding roller 12 can not only rotate under the drive of the second motor 32, but also move up and down and twist back and forth during the rotation grinding process, which improves the grinding effect of the arc-shaped grinding roller 12 inside the annular magnetic core and makes the grinding trajectory more diversified. The grinding of the annular magnetic core by the arc-shaped grinding roller 12 is no longer a fixed position rotation grinding, which improves the grinding effect on the inner ring of the annular magnetic core. The combination of multiple movements makes the inside of the annular magnetic core smoother. At the same time, the arc surface of the inner ring port of the annular magnetic core will also be covered and ground, improving the smoothness of the grinding.

[0026] See Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The top of the arc-shaped grinding roller 12 is provided with a fixed disc 40. The inside of the fixed disc 40 is provided with an annular expansion component. The annular expansion component is used to drive the arc-shaped grinding roller 12 to fit and grind against the inner wall of the annular magnetic core. The annular expansion component is provided with an L-shaped expansion rod 45 to drive the arc-shaped grinding roller 12 to expand and retract on the limiting guide rail 42. The annular expansion component also includes a first electric telescopic rod 46 and a support turntable 41. The support turntable 41 is movably connected to the center of the inner bottom of the fixed disc 40 through a rotating shaft. The inner perimeter of the fixed disc 40 is fixedly installed with the limiting guide rail 42 by bolts. The limiting guide rail 42 is slidably connected with the limiting guide block 43. The connecting disc 44 is fixedly installed on the limiting guide block 43, and the arc-shaped grinding roller 12 is fixedly installed at the bottom center of the connecting disc 44.

[0027] See Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7An L-shaped expansion rod 45 is movably connected to the top of the support turntable 41. The L-shaped expansion rod 45 is movably connected to the connecting plate 44. A first electric telescopic rod 46 is fixedly installed inside the fixed disc 40, and the output end of the first electric telescopic rod 46 is fixedly installed on one of the connecting plates 44. A battery pack 47 for powering the first electric telescopic rod 46 is also provided inside the fixed disc 40. The fixed disc 40 has a grinding opening 48 that matches the arc-shaped grinding roller 12, and the arc-shaped grinding roller 12 moves within the grinding opening 48.

[0028] See Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The first electric telescopic rod 46 inside the fixed disc 40 drives the connecting disc 44 to move smoothly and stably under the action of the limiting guide rail 42 and the limiting guide block 43. The connecting disc 44 drives the supporting turntable 41 inside the fixed disc 40 to rotate through the L-shaped expansion rod 45. During the rotation of the supporting turntable 41, the L-shaped expansion rod 45 drives the other three connecting discs 44 and the limiting guide block 43 to move stably in the limiting guide rail 42. This causes the arc-shaped grinding roller 12 under the connecting disc 44 to expand and contract in the grinding opening 48. By adjusting the expansion and contraction movements, the arc-shaped grinding roller 12 can fit and grind the inner wall of the annular magnetic core with different inner diameters. By adjusting the degree of fit between the arc-shaped grinding roller 12 and the inner wall of the annular magnetic core, different degrees of grinding of the inner ring of the annular magnetic core can be achieved.

[0029] See Figure 3 , Figure 4 , Figure 5 , Figure 8 and Figure 9A base frame 50 is fixedly mounted on the top of the grinding base 10 via a support frame 16. A side-swing assembly is provided inside the base frame 50. This assembly drives the arc-shaped grinding plate 11 to reciprocate and grind against the outer circumference of the annular magnetic core. A swing block 52 within the side-swing assembly drives the arc-shaped grinding plate 11 to reciprocate along the arc-shaped swing rod 51. The side-swing assembly also includes a connecting rotating rod 60, a limiting base 53, and a loop-shaped swing plate 56. The limiting base 53 is fixedly mounted on the inner bottom of the base frame 50 via bolts. The limiting base 53 has a limiting groove 54. A limiting slider 55 is slidably connected in the limiting groove 54. A spiral swing plate 56 is fixedly installed on the top of the limiting slider 55. A connecting rod 60 is movably connected to the top of the base frame 50. An arc-shaped actuating plate 63 is fixedly installed at the bottom of the connecting rod 60. A swing column 64 is installed at the bottom of the arc-shaped actuating plate 63, and the swing column 64 moves in the spiral swing plate 56. An arc-shaped swing rod 51 is fixedly installed at the inner bottom of the base frame 50, and a swing block 52 moves through the outer periphery of the arc-shaped swing rod 51. The arc-shaped grinding plate 11 and the arc-shaped grinding roller 12 are both made of the same material as the sponge grinding wheel.

[0030] See Figure 3 , Figure 4 , Figure 5 , Figure 8 and Figure 9 A T-shaped moving rod 57 is movably sleeved on the outer periphery of the sway plate 56. The T-shaped moving rod 57 is movably connected to the sway block 52. A hydraulic telescopic rod 58 is fixedly installed on the side of the sway block 52 away from the sway plate 56. The hydraulic telescopic rod 58 movably passes through the movable slot 59 opened in the base frame 50. The arc-shaped grinding plate 11 is fixedly installed at the top of the hydraulic telescopic rod 58. A first bevel gear 61 is fixedly installed at the top of the connecting rod 60. A second bevel gear 62 is fixedly installed on the base rotating rod 25 located on both sides adjacent to the first motor 29. The first bevel gear 61 and the second bevel gear 62 are movably meshed. A support ring 15 is fixedly installed on the side plate 13. The connecting rod 60 movably passes through the support ring 15. The support ring 15 realizes the rotational support of the connecting rod 60.

[0031] See Figure 3 , Figure 4 , Figure 5 , Figure 8 and Figure 9When the torsion ring 22 rotates and moves up and down outside the fixed column 21, the other three base rotating rods 25 on the loop-shaped fixed plate 20 will also rotate on the base plate 24 under the action of the arc-shaped torsion plate 23, the torsion block 26, the connecting rotating rod 28, and the connecting rod. Among them, the base rotating rods 25 on both sides of the first motor 29 drive the second bevel gear 62 to rotate. The second bevel gear 62 meshes with the first bevel gear 61 to drive the connecting rotating rod 60 on the support ring 15 to rotate smoothly and stably. The connecting rotating rod 60 drives the arc-shaped swing rod 51 inside the base frame 50 to rotate synchronously. The arc-shaped swing rod 51 will drive the loop-shaped swing plate 56 through the swing block 52 to achieve rotation under the action of the limiting base 53, the limiting slide groove 54, and the limiting slider 55. During the horizontal motion, the boomerang 56 drives the T-shaped motion rod 57 to move back and forth synchronously. The T-shaped motion rod 57 drives the swing block 52 to rotate and swing back and forth on the arc-shaped swing rod 51. The swing block 52 swings back and forth around the outer circumference of the annular magnetic core. The hydraulic telescopic rod 58 on the swing block 52 drives the arc-shaped grinding plate 11 to fit against the outer circumference of the annular magnetic core. The swing block 52 drives the arc-shaped grinding plate 11 to grind the outer circumference of the annular magnetic core back and forth through the hydraulic telescopic rod 58 and the movable groove 59. This side horizontal back and forth grinding improves the grinding effect on the outer circumference of the annular magnetic core. At the same time, the arc-shaped port on the outer circumference of the annular magnetic core is covered and ground by the arc-shaped grinding plate 11, making the grinding of the outer circumference of the annular magnetic core more comprehensive and thorough.

[0032] See Figure 1 , Figure 3 , Figure 4 and Figure 5 The fixed frame 14 also has a blower cleaning assembly inside, which is used to clean the grinding dust on the outer periphery of the annular magnetic core. The blower cleaning assembly includes a cleaning cylinder 70, a rotating disk 73, and a cleaning seat 76 located at the bottom of the fixed frame 14. The cleaning cylinder 70 is fixedly mounted on the support ring 15. A piston plate 71 is movably arranged inside the cleaning cylinder 70. A piston rod 72 is fixedly mounted on the top of the piston plate 71 and extends through to the top outer side of the cleaning cylinder 70. A rotating disk 73 is fixedly mounted on the base rotating rod 25 away from the first motor 29. A limiting ring 74 is used to move the rotating disk 73. A hinge rod 75 is movably connected, and the bottom end of the hinge rod 75 is connected to the top end of the piston rod 72 via a hinge. A cleaning seat 76 is fixedly installed on the side plate 13 by bolts, and several cleaning nozzles 77 are fixedly installed on the bottom of the cleaning seat 76. An air inlet pipe 78 and an air outlet pipe 79 are provided at the bottom of the cleaning cylinder 70, and the air outlet pipe 79 is connected to the cleaning seat 76. One-way valves are provided on both the air inlet pipe 78 and the air outlet pipe 79. The one-way valve on the air inlet pipe 78 allows for one-way filling of air into the cleaning cylinder 70, and the one-way valve on the air outlet pipe 79 ensures that the compressed air in the cleaning cylinder 70 is discharged into the cleaning seat 76.

[0033] See Figure 1 , Figure 3 , Figure 4 and Figure 5 Another base rotating rod 25, opposite to the first motor 29, will drive the rotating disk 73 to rotate during its rotational movement. During this rotation, the rotating disk 73, through the limiting ring 74, hinge rod 75, and hinge, drives the piston rod 72 to move stably up and down within the cleaning cylinder 70. Simultaneously, the piston rod 72 drives the piston plate 71 inside the cleaning cylinder 70 to move up and down. When the piston plate 71 rises, it creates a negative pressure inside the cleaning cylinder 70, filling the cleaning cylinder 70 with air through the air inlet pipe 78. When the stopper plate 71 descends, it generates positive pressure inside the cleaning cylinder 70. The compressed air inside the cleaning cylinder 70 is discharged through the air outlet pipe 79. The compressed air is discharged into the cleaning seat 76 through the air outlet pipe 79. Finally, the cleaning nozzle 77 blows air to clean the outer periphery of the entire annular magnetic core, the arc-shaped grinding plate 11, and the arc-shaped grinding roller 12, blowing away the debris generated during grinding. This improves the subsequent grinding effect on the annular magnetic core, and the grinding of the annular magnetic core is no longer affected by the grinding debris, thus improving the grinding quality of the annular magnetic core.

[0034] See Figure 1 , Figure 2 , Figure 3 , Figure 8 and Figure 10 A clamping frame 80 is fixedly installed at the bottom of the grinding base 10. The clamping frame 80 is equipped with an alignment and clamping assembly for clamping and positioning the annular magnetic core. The alignment and clamping assembly includes a screw 81 and a second electric telescopic rod 82. A bidirectional motor 83 is fixedly installed at the center of the clamping frame 80. The output end of the bidirectional motor 83 is connected to a clamping block 84 through the screw 81. The top of the clamping block 84 is connected to an arc-shaped clamping plate 86 for aligning and clamping the annular magnetic core through a clamping rod 85. The top of the arc-shaped clamping plate 86 is connected to the second electric telescopic rod 82 through an arc-shaped rod 90. The bottom of the second electric telescopic rod 82 is connected to a clamping disc 87 for pressing the top of the annular magnetic core. The clamping block 84 is movably inserted through the positioning rods 88 at both ends inside the clamping frame 80. The clamping rod 85 is movably inserted through the clamping groove 89 opened at the top of the clamping frame 80. The clamping block 84 is clamped by the clamping rod 85 so that the arc-shaped clamping plate 86 moves synchronously.

[0035] See Figure 1 , Figure 2 , Figure 3 , Figure 8 and Figure 10The bidirectional motor 83 drives the screws 81 at both ends to rotate. The clamping blocks 84 on the screws 81 move relative to each other under the limiting support of the positioning rod 88. The clamping blocks 84 drive the arc-shaped clamping plate 86 to clamp and align the sides of the ring magnetic core through the clamping rod 85 and the clamping groove 89, so that the stacked ring magnetic cores can be vertical and neat. After the ring magnetic cores are aligned, the bidirectional motor 83 reverses the screws 81 to make the clamping blocks 84 move in opposite directions in the screws 81 and the positioning rod 88, so that the arc-shaped clamping plate 86 retracts to both ends of the ring magnetic core. Then, the second electric telescopic rod 82 on the arc rod 90 drives the pressing disc 87 to descend. The pressing disc 87 is used to press and fix the neatly stacked ring magnetic cores, so that the ring magnetic cores are stacked neatly and stably, which facilitates the subsequent multi-faceted grinding of the inner and outer rings of the ring magnetic cores.

[0036] Working principle: Multiple ring-shaped magnetic cores are stacked on the tray of the grinding base 10. The screws 81 at both ends are driven by the bidirectional motor 83 to rotate. The clamping blocks 84 on the screws 81 move relative to each other under the limiting support of the positioning rod 88. The clamping blocks 84 drive the arc-shaped clamping plate 86 to clamp and align the sides of the ring-shaped magnetic cores through the clamping rod 85 and the clamping groove 89, so that the stacked ring-shaped magnetic cores can be vertical and neat. After the ring-shaped magnetic cores are aligned, the bidirectional motor 83 reverses the screws 81 to make the clamping blocks 84 move in opposite directions between the screws 81 and the positioning rod 88, so that the arc-shaped clamping plate 86 retracts to both ends of the ring-shaped magnetic cores. Then, the second electric telescopic rod 82 on the arc-shaped rod 90 drives the pressing disc 87 to descend. The pressing disc 87 is used to press and fix the neatly stacked ring-shaped magnetic cores, so that the ring-shaped magnetic cores are stacked neatly and stably, which facilitates the subsequent multi-face grinding of the inner and outer rings of the ring-shaped magnetic cores.

[0037] The first electric telescopic rod 46 inside the fixed disc 40 drives the connecting disc 44 to move smoothly and stably under the action of the limiting guide rail 42 and the limiting guide block 43. The connecting disc 44 drives the supporting turntable 41 inside the fixed disc 40 to rotate through the L-shaped expansion rod 45. During the rotation of the supporting turntable 41, the L-shaped expansion rod 45 drives the other three connecting discs 44 and the limiting guide block 43 to move stably in the limiting guide rail 42. This causes the arc-shaped grinding roller 12 under the connecting disc 44 to expand and contract in the grinding opening 48. By adjusting the expansion and contraction movements, the arc-shaped grinding roller 12 can fit and grind the inner wall of the annular magnetic core with different inner diameters. By adjusting the degree of fit between the arc-shaped grinding roller 12 and the inner wall of the annular magnetic core, different degrees of grinding of the inner ring of the annular magnetic core can be achieved.

[0038] The first motor 29 drives one of the base rotating rods 25 to rotate. The base rotating rod 25 drives the connecting rotating rod 28 to rotate via the connecting plate 27. The rotating rod rotates on the torsion block 26, and the torsion block 26 also rotates on the arc-shaped torsion plate 23. This causes the arc-shaped torsion plate 23 and the torsion ring 22 to descend on the fixed column 21 while also rotating. This results in the torsion ring 22 undergoing a combination of back-and-forth rotation and lifting motion around the outer periphery of the fixed column 21. The torsion ring 22, through the movable plate 33, drives the arc-shaped grinding roller 12 under the L-shaped motor plate 30 to also rotate and lift synchronously within the inner ring of the annular magnetic core. The movable arc-shaped grinding roller 12 moves up and down and twists back and forth inside the annular magnetic core. At this time, the arc-shaped grinding roller 12 can not only be driven by the second motor 32 to rotate under the fixed turntable, but also move up and down and twist back and forth during the rotation grinding process, which improves the grinding effect of the arc-shaped grinding roller 12 inside the annular magnetic core and makes the grinding trajectory more diversified. The grinding of the annular magnetic core by the arc-shaped grinding roller 12 is no longer a fixed-position rotational grinding, which improves the grinding effect on the inner ring of the annular magnetic core. The combination of multiple movements makes the inside of the annular magnetic core smoother. At the same time, the arc surface of the inner ring port of the annular magnetic core will also be covered and ground, improving the smoothness of the grinding.

[0039] When the torsion ring 22 rotates and moves up and down outside the fixed column 21, the other three base rotating rods 25 on the loop-shaped fixed plate 20 will also rotate on the base plate 24 under the action of the arc-shaped torsion plate 23, the torsion block 26, the connecting rotating rod 28, and the connecting rod. Among them, the base rotating rods 25 on both sides of the first motor 29 drive the second bevel gear 62 to rotate. The second bevel gear 62 meshes with the first bevel gear 61 to drive the connecting rotating rod 60 on the support ring 15 to rotate smoothly and stably. The connecting rotating rod 60 drives the arc-shaped swing rod 51 inside the base frame 50 to rotate synchronously. The arc-shaped swing rod 51 will drive the loop-shaped swing plate 56 to move back and forth under the action of the limiting base 53, the limiting slide groove 54, and the limiting slider 55 through the swing block 52. During horizontal movement, the boomerang 56 drives the T-shaped motion rod 57 to move back and forth synchronously while maintaining stable horizontal movement. The T-shaped motion rod 57 drives the swing block 52 to rotate and swing back and forth on the arc-shaped swing rod 51. The swing block 52 swings back and forth around the outer periphery of the annular magnetic core. The hydraulic telescopic rod 58 on the swing block 52 drives the arc-shaped grinding plate 11 to fit against the outer periphery of the annular magnetic core. The swing block 52 drives the arc-shaped grinding plate 11 to perform back and forth circular grinding on the outer periphery of the annular magnetic core through the hydraulic telescopic rod 58 and the movable groove 59. This side horizontal back and forth grinding improves the grinding effect on the outer periphery of the annular magnetic core. At the same time, the arc-shaped port on the outer periphery of the annular magnetic core is covered and ground by the arc-shaped grinding plate 11, making the grinding of the outer periphery of the annular magnetic core more comprehensive and thorough.

[0040] Meanwhile, the base rotating rod 25, which is opposite to the first motor 29, will drive the rotating disk 73 to rotate during its rotational movement. During this rotation, the rotating disk 73, through the limiting ring 74, hinge rod 75, and hinge, drives the piston rod 72 to move stably up and down within the cleaning cylinder 70. Simultaneously, the piston rod 72 drives the piston plate 71 inside the cleaning cylinder 70 to move up and down. When the piston plate 71 rises, it creates a negative pressure inside the cleaning cylinder 70, filling the cleaning cylinder 70 with air through the air inlet pipe 78. When the stopper plate 71 descends, it generates positive pressure inside the cleaning cylinder 70. The compressed air inside the cleaning cylinder 70 is discharged through the air outlet pipe 79. The compressed air is discharged into the cleaning seat 76 through the air outlet pipe 79. Finally, the cleaning nozzle 77 blows air to clean the outer periphery of the entire annular magnetic core, the arc-shaped grinding plate 11, and the arc-shaped grinding roller 12, blowing away the debris generated during grinding. This improves the subsequent grinding effect on the annular magnetic core, and the grinding of the annular magnetic core is no longer affected by the grinding debris, thus improving the grinding quality of the annular magnetic core.

[0041] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A multi-faceted grinding and polishing device for ring-shaped magnetic cores based on magnetic core processing, comprising a grinding base, an arc-shaped grinding plate, and an arc-shaped grinding roller, wherein a fixing frame is fixedly mounted on the top of the grinding base via a side plate, characterized in that, The fixed frame is equipped with a torsion lifting assembly, which is used to drive the arc-shaped grinding roller to perform grinding inside the annular magnetic core. The torsion ring in the torsion lifting assembly drives the arc-shaped grinding roller to perform torsion and lifting movements inside the annular magnetic core. The torsion lifting assembly includes a first motor, a U-shaped fixed plate and a fixed column. A fixed disc is set on the top of the arc-shaped grinding roller. An annular expansion assembly is set inside the fixed disc. The annular expansion assembly is used to drive the arc-shaped grinding roller to fit against the inner wall of the annular magnetic core for grinding. An L-shaped expansion rod is set in the annular expansion assembly to drive the arc-shaped grinding roller to perform expansion and contraction movements on the limiting guide rail. The top of the grinding base is fixedly mounted with a base frame via a support bracket. The base frame is equipped with a side swing assembly, which is used to drive the arc-shaped grinding plate to reciprocate and grind the outer circumference of the annular magnetic core. The swing block in the side swing assembly drives the arc-shaped grinding plate to reciprocate along the arc-shaped swing rod. The fixed frame is also equipped with a blower cleaning assembly, which is used to clean the grinding dust on the outer circumference of the annular magnetic core. The blower cleaning assembly includes a cleaning cylinder and a rotating disk.

2. The ring-shaped magnetic core multi-faceted processing and polishing device based on magnetic core processing according to claim 1, characterized in that, The torsion lifting assembly also includes an arc-shaped torsion plate fixedly installed on the outer periphery of the torsion ring, a base plate fixedly installed on the top four sides of the U-shaped fixed plate, a base rotating rod movably connected to each base plate, a fixed column fixedly installed at the inner top center of the fixed frame, the torsion ring movably sleeved on the outer periphery of the fixed column, a torsion block movably connected to the top of the arc-shaped torsion plate at the end away from the fixed column, a connecting plate fixedly installed at the end of the base rotating rod close to the fixed column, a connecting rotating rod fixedly installed on the connecting plate, and the connecting rotating rod movably passes through the torsion block.

3. The ring-shaped magnetic core multi-faceted processing and polishing device based on magnetic core processing according to claim 2, characterized in that, The bottom of the U-shaped fixed plate is fixedly installed on the top of the side plate by an arc-shaped support foot. The first motor is fixedly installed on the top of the side plate by bolts. The base rotating rod near one end of the side plate is fixedly installed on the output end of the first motor. Movable plates are fixedly installed on the bottom of the two arc-shaped torsion plates. An L-shaped motor plate is fixedly installed on the bottom of the movable plate. A motor cover is fixedly installed on the bottom of the L-shaped motor plate. A second motor is fixedly installed inside the motor cover. The output end of the second motor is fixedly installed on the top of the fixed disc by a rotating shaft.

4. The ring-shaped magnetic core multi-faceted processing and polishing device based on magnetic core processing according to claim 1, characterized in that, The annular expansion assembly also includes a first electric telescopic rod and a support turntable. The support turntable is movably connected to the center of the inner bottom of the fixed disc via a rotating shaft. Limiting guide rails are fixedly installed around the inner perimeter of the fixed disc by bolts. Limiting guide blocks are slidably connected to the limiting guide rails. Connecting discs are fixedly installed on the limiting guide blocks, and arc-shaped grinding rollers are fixedly installed at the bottom center of the connecting discs.

5. The ring-shaped magnetic core multi-faceted processing and polishing device based on magnetic core processing according to claim 4, characterized in that, The top of the support turntable is movably connected to an L-shaped expansion rod, which is movably connected to a connecting plate. The first electric telescopic rod is fixedly installed inside the fixed disc, and the output end of the first electric telescopic rod is fixedly installed on one of the connecting plates. The fixed disc is also equipped with a battery pack that supplies power to the first electric telescopic rod. The fixed disc has a grinding opening that matches the arc-shaped grinding roller, and the arc-shaped grinding roller moves within the grinding opening.

6. The ring-shaped magnetic core multi-faceted processing and polishing device based on magnetic core processing according to claim 1, characterized in that, The side swing assembly also includes a connecting rod, a limiting base, and a loop swing plate. The limiting base is fixedly installed on the inner bottom of the base frame by bolts. The limiting base has a limiting groove, and a limiting slider is slidably connected in the limiting groove. A loop swing plate is fixedly installed on the top of the limiting slider. The connecting rod is movably connected to the top of the base frame. An arc-shaped actuating plate is fixedly installed at the bottom of the connecting rod. A swing column is installed at the bottom of the arc-shaped actuating plate, and the swing column moves in the loop swing plate. The arc-shaped swing rod is fixedly installed at the inner bottom of the base frame, and the swing block moves through the outer periphery of the arc-shaped swing rod.

7. The ring-shaped magnetic core multi-faceted processing and polishing device based on magnetic core processing according to claim 6, characterized in that, The outer periphery of the spiral swing plate is movably sleeved with a T-shaped motion rod, which is movably connected to the swing block. A hydraulic telescopic rod is fixedly installed on the side of the swing block away from the spiral swing plate. The hydraulic telescopic rod movably passes through the movable slot opened in the base frame, and the arc-shaped grinding plate is fixedly installed at the top of the hydraulic telescopic rod. A first bevel gear is fixedly installed at the top of the connecting rod, and a second bevel gear is fixedly installed on the base rotating rod located on both sides adjacent to the first motor. The first bevel gear and the second bevel gear are movably meshed. A support ring is fixedly installed on the side plate, and the connecting rotating rod movably passes through the support ring.

8. The ring-shaped magnetic core multi-faceted processing and polishing device based on magnetic core processing according to claim 1, characterized in that, The blower cleaning assembly also includes a cleaning seat located at the bottom of the fixed frame. The cleaning cylinder is fixedly mounted on the support ring. A piston plate is movably arranged inside the cleaning cylinder. A piston rod is fixedly mounted on the top of the piston plate and extends through to the top outer side of the cleaning cylinder. A rotating disk is fixedly mounted on the base rotating rod away from the first motor. A hinge rod is movably connected to the rotating disk through a limiting ring. The bottom end of the hinge rod is connected to the top end of the piston rod through a hinge. The cleaning seat is fixedly mounted on the side plate by bolts. Several cleaning nozzles are fixedly mounted on the bottom of the cleaning seat. An air inlet pipe and an air outlet pipe are provided at the bottom of the cleaning cylinder, and the air outlet pipe is connected to the cleaning seat.

9. The ring-shaped magnetic core multi-faceted processing and polishing device based on magnetic core processing according to claim 1, characterized in that, A clamping frame is fixedly installed at the bottom of the grinding base. Inside the clamping frame, there is an alignment and clamping assembly for clamping and positioning the annular magnetic core. The alignment and clamping assembly includes a screw and a second electric telescopic rod. A bidirectional motor is fixedly installed at the center of the clamping frame. The output end of the bidirectional motor is connected to a clamping block via a screw. The top of the clamping block is connected to an arc-shaped clamping plate for aligning and clamping the annular magnetic core via a clamping rod. The top of the arc-shaped clamping plate is connected to a second electric telescopic rod via an arc-shaped rod. The bottom of the second electric telescopic rod is connected to a clamping disc for pressing the top of the annular magnetic core. The clamping block moves through the positioning rods at both ends inside the clamping frame. The clamping rod moves through the clamping groove opened at the top of the clamping frame.

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