Grinding device for ferrite core
By designing a ferrite core grinding device including a limiting mechanism and a return spring, the problem of insufficient or excessive grinding depth in the prior art is solved, precise polishing of the core is achieved, and the accuracy of the core is improved.
Patent Information
- Application Number
- CN202520142025.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-22
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2035-01-22
AI Technical Summary
In the prior art, the grinding process of ferrite magnetic cores can easily lead to insufficient or excessive grinding depth, resulting in inaccurate core accuracy.
A grinding device including a fixing table, connecting ring, intercepting net, limiting bump, guide rod, return spring, connection plate, rotating motor, grinding disc, etc. is designed. Through the cooperation of the limiting mechanism and return spring, the accuracy of the grinding depth is ensured.
By setting up a limiting mechanism, the maximum distance of the downward movement of the grinding mechanism is limited to ensure that the grinding depth meets the requirements, avoid excessive or insufficient grinding depth, and improve the accuracy of the magnetic core.
Smart Images
Figure CN222553140U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of grinding a core center column, in particular to a grinding device for a ferrite core. Background Art
[0002] Ferrite core is a high-frequency magnetic material with the same principle as silicon steel sheet. It is used in high-frequency environment and is mainly used for high-frequency transformers, high-frequency magnetic rings, etc. It can increase magnetic permeability and improve inductance quality factor. In the prior art, in order to control the inductance, the center column of the core needs to be ground off to a certain depth to form an air gap in the core. This process is generally performed manually by staff. This grinding method is prone to insufficient or excessive grinding depth, resulting in inaccurate precision of the final ferrite core. Utility Model Content
[0003] The purpose of the utility model is to provide a ferrite core grinding device in order to solve the problems raised in the above background technology.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a grinding device for a ferrite core, comprising a fixed table, the inner wall of the fixed table is integrally formed with an inwardly recessed connecting ring, the inner wall of the connecting ring is fixedly connected with an intercepting net, the top of the intercepting net is integrally formed with an upwardly protruding limiting protrusion, the limiting protrusion is used to limit the core, the top of the connecting ring is welded with an upwardly protruding guide rod, the outer wall of the guide rod is slidably connected with a connecting plate, a reset spring is abutted between the bottom end of the connecting plate and the top end of the connecting ring, the reset spring is socketed with the guide rod, limiting mechanisms are distributed on the top of the intercepting net and the connecting plate, the top of the connecting plate is equipped with a grinding mechanism extending to the bottom of the connecting plate, and the grinding mechanism is connected to the limiting mechanism.
[0005] As a further solution of the utility model: the grinding mechanism includes a rotating motor installed on the top of the connecting plate, the output shaft of the rotating motor passes through the bottom of the connecting plate, and the output shaft of the rotating motor is fixedly installed with a limiting rod, the outer wall of the limiting rod is slidably connected with a sliding sleeve up and down, a connecting spring is abutted between the top of the sliding sleeve and the protruding part of the top of the limiting rod, the bottom end of the sliding sleeve is integrally formed with a connecting disk, and a grinding disk is installed at the bottom end of the connecting disk.
[0006] As a further solution of the utility model: the limiting mechanism includes a rotating ring rotatably connected to the outer periphery of the connecting plate through a bearing, the outer periphery of the rotating ring is integrally formed with a fixing piece protruding outward, and the top of the fixing piece is integrally formed with a telescopic rod that penetrates to the top of the connecting plate.
[0007] As a further solution of the utility model: the limiting mechanism also includes a plug-in sleeve fixedly connected to the top of the intercepting net, the plug-in sleeve is a hollow structure, and the top of the plug-in sleeve is an open structure, the inner cavity of the plug-in sleeve is plugged with a plug-in rod, and the plug-in rod is aligned with the telescopic rod in the vertical direction.
[0008] The inner wall of the fixed platform is located below the interception net and is fixedly connected with a connection cover, and the output end of the connection cover is connected to the coolant recovery tank through a pipeline.
[0009] As a further solution of the utility model: the outer wall of one end of the limiting rod inserted into the sliding sleeve matches the shape of the inner wall of the sliding sleeve; the cross-section of the inner wall of the sliding sleeve is non-circular.
[0010] Compared with the prior art, the beneficial effects of the utility model are:
[0011] By setting a limit mechanism, the maximum distance that the grinding mechanism can move downward can be limited, thereby ensuring that the grinding depth meets the requirements and avoiding excessive or insufficient grinding depth. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the structure of the utility model;
[0013] Figure 2 It is a schematic diagram of the internal structure of the utility model;
[0014] Figure 3 It is a schematic diagram of the grinding mechanism structure of the utility model.
[0015] In the figure: 1. fixed platform; 2. connecting ring; 3. intercepting net; 4. limiting protrusion; 5. plug-in sleeve; 6. plug-in rod; 7. guide rod; 8. reset spring; 9. connecting plate; 10. telescopic rod; 11. fixing piece; 12. rotating motor; 13. connecting disk; 14. rotating ring; 15. grinding disk; 16. connecting cover; 17. limiting rod; 18. sliding sleeve; 19. connecting spring. DETAILED DESCRIPTION
[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0017] See also Figure 1 to Figure 3In the embodiment of the utility model, a grinding device for a ferrite core comprises a fixed table 1, the inner wall of the fixed table 1 is integrally formed with a connecting ring 2 recessed inwardly, the inner wall of the connecting ring 2 is fixedly connected with an interception net 3, the top of the interception net 3 is integrally formed with a limiting protrusion 4 protruding upward, the limiting protrusion 4 is used to limit the magnetic core, the top of the connecting ring 2 is welded with a guide rod 7 protruding upward, the outer wall of the guide rod 7 is slidably connected with a connecting plate 9, a reset spring 8 is abutted between the bottom end of the connecting plate 9 and the top end of the connecting ring 2, the reset spring 8 is sleeved with the guide rod 7, a limiting mechanism is distributed on the top of the interception net 3 and the connecting plate 9, a grinding mechanism extending to the bottom of the connecting plate 9 is installed on the top of the connecting plate 9, and the grinding mechanism is connected to the limiting mechanism.
[0018] In this embodiment: First, when grinding the magnetic core, the magnetic core is placed on the inner side of the limiting protrusion 4. Since the inner wall of the limiting protrusion 4 coincides with the outer wall of the magnetic core, the limiting protrusion 4 limits the magnetic core at this time. After the limiting mechanism matches, the grinding mechanism is started and the connecting plate 9 is pressed with both hands. The connecting plate 9 moves downward along the outer wall of the guide rod 7. At this time, the reset spring 8 is compressed until the bottom end of the grinding mechanism contacts the middle column of the magnetic core. The high-speed rotating grinding mechanism grinds the middle column of the magnetic core. In the above process, when the grinding mechanism contacts the middle column of the magnetic core, an extrusion force is generated. The reaction force of the extrusion force acts on the top of the middle column of the magnetic core. With the high-speed rotation of the grinding mechanism, the top of the middle column of the magnetic core can be effectively polished until the two parts of the limiting mechanism are offset; when the two parts of the limiting mechanism are offset, the grinding mechanism is limited at this time, and the grinding mechanism cannot continue to move downward, so the quantitative grinding of the middle column of the magnetic core can be completed.
[0019] Please refer to Figure 1 , Figure 2 The grinding mechanism includes a rotating motor 12 mounted on the top of the connecting plate 9, the output shaft of the rotating motor 12 penetrates the bottom of the connecting plate 9, and a limiting rod 17 is fixedly mounted on the output shaft of the rotating motor 12, a sliding sleeve 18 is slidably connected to the outer wall of the limiting rod 17, a connecting spring 19 is abutted between the top of the sliding sleeve 18 and the protruding part of the top of the limiting rod 17, and a connecting disk 13 is integrally formed at the bottom of the sliding sleeve 18, and a grinding disk 15 is mounted at the bottom of the connecting disk 13. The outer wall of one end of the limiting rod 17 inserted into the sliding sleeve 18 matches the shape of the inner wall of the sliding sleeve 18; the shape of the cross section of the inner wall of the sliding sleeve 18 is non-circular.
[0020] In this embodiment: by starting the rotating motor 12, the rotating motor 12 drives the limit rod 17 to rotate, and the limit rod 17 drives the connecting disk 13 to rotate through the sliding sleeve 18, and the rotating connecting disk 13 can drive the grinding disk 15 to rotate, and then the staff pushes the connecting plate 9 to move downward, and the connecting plate 9 moving downward slides downward along the outer wall of the guide rod 7. At this time, the reset spring 8 is compressed, and the connecting plate 9 moving downward drives the grinding disk 15 to rotate until the grinding disk 15 contacts the middle column of the magnetic core. At this time, the high-speed rotating grinding disk 15 can grind the middle column of the magnetic core, and in order to avoid damage caused by hard extrusion, the position of the grinding disk 15 cannot continue to move downward at this time, and the force applied to the connecting plate 9 causes the connecting plate 9 to continue to move downward, and the connecting plate 9 drives the limit rod 17 to move downward, and the limit rod 17 slides downward along the inner wall of the sliding sleeve 18, and the connecting spring 19 is compressed.
[0021] During the grinding process, the core column is gradually shortened. At this time, the connecting spring 19 is reset, pushing the sliding sleeve 18 and the connecting plate 13 to move downward. The connecting plate 13 moving downward drives the grinding plate 15 to continuously fit the top of the core column, thereby forming a core air gap.
[0022] Please refer to Figure 1 and Figure 2 The limiting mechanism includes a rotating ring 14 rotatably connected to the outer periphery of the connecting plate 13 through a bearing, the outer periphery of the rotating ring 14 is integrally formed with a fixing member 11 protruding outward, and the top of the fixing member 11 is integrally formed with a telescopic rod 10 that penetrates to the top of the connecting plate 9. The limiting mechanism also includes a plug-in sleeve 5 fixedly connected to the top of the intercepting net 3, the plug-in sleeve 5 is a hollow structure, and the top of the plug-in sleeve 5 is an open structure, the inner cavity of the plug-in sleeve 5 is plugged with a plug-in rod 6, and the plug-in rod 6 is aligned with the telescopic rod 10 in the vertical direction.
[0023] In this embodiment: after determining the air gap size, by selecting a plug rod 6 of suitable length, the selected plug rod 6 is inserted into the inner wall of the plug sleeve 5. At this time, the distance between the top of the plug rod 6 and the top of the unpolished core center column is the polished height.
[0024] During the grinding process, the downward moving connecting disk 13 drives the rotating ring 14 to move downward synchronously, and the rotating ring 14 drives the telescopic rod 10 to move up and down synchronously through the fixing member 11. The bottom end of the telescopic rod 10 is in contact with the top end of the plug-in rod 6. At this time, the telescopic rod 10 cannot move downward, so the rotating ring 14 cannot move downward, and the connecting disk 13 and the grinding disk 15 cannot move downward either, thereby stopping the grinding of the core center column to avoid over-grinding or under-grinding.
[0025] Please refer to Figure 2The inner wall of the fixed platform 1 is located below the interception net 3 and is fixedly connected with a connecting cover 16, and the output end of the connecting cover 16 is connected to the coolant recovery tank through a pipeline.
[0026] In this embodiment: During the grinding process, coolant is used to cool the grinding end face to avoid excessive grinding temperature. The flow of coolant will carry away the debris generated by grinding, which will be intercepted by the interception net 3. The coolant is discharged through the connecting cover 16 and transported to the coolant recovery tank through a pipeline.
[0027] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A ferrite core grinding device, comprising a fixing table (1), characterized in that: The inner wall of the fixed platform (1) is integrally formed with a connecting ring (2) recessed inwardly, the inner wall of the connecting ring (2) is fixedly connected with an interception net (3), the top of the interception net (3) is integrally formed with a limiting protrusion (4) protruding upwardly, the top of the connecting ring (2) is welded with a guide rod (7) protruding upwardly, the outer wall of the guide rod (7) is slidably connected with a connecting plate (9), a return spring (8) is abutted between the bottom end of the connecting plate (9) and the top end of the connecting ring (2), the return spring (8) is sleeved with the guide rod (7), the top of the interception net (3) and the connecting plate (9) are distributed with a limiting mechanism, the top of the connecting plate (9) is equipped with a grinding mechanism extending to the bottom of the connecting plate (9), and the grinding mechanism is connected to the limiting mechanism.
2. A ferrite core grinding device according to claim 1, characterized in that: The grinding mechanism comprises a rotating motor (12) mounted on the top of the connecting plate (9), the output shaft of the rotating motor (12) passes through the bottom of the connecting plate (9), and a limiting rod (17) is fixedly mounted on the output shaft of the rotating motor (12), the outer wall of the limiting rod (17) is slidably connected with a sliding sleeve (18) up and down, a connecting spring (19) is abutted between the top of the sliding sleeve (18) and the protruding portion of the top of the limiting rod (17), the bottom end of the sliding sleeve (18) is integrally formed with a connecting disk (13), and a grinding disk (15) is mounted on the bottom end of the connecting disk (13).
3. A ferrite core grinding device according to claim 2, characterized in that: The limiting mechanism comprises a rotating ring (14) rotatably connected to the outer periphery of the connecting plate (13) via a bearing, the outer periphery of the rotating ring (14) is integrally formed with a fixing member (11) protruding outward, and the top of the fixing member (11) is integrally formed with a telescopic rod (10) penetrating to the top of the connecting plate (9).
4. A ferrite core grinding device according to claim 3, characterized in that: The limiting mechanism further comprises a plug sleeve (5) fixedly connected to the top end of the intercepting net (3); the plug sleeve (5) is a hollow structure, and the top end of the plug sleeve (5) is an open structure; a plug rod (6) is plugged into the inner cavity of the plug sleeve (5); the plug rod (6) is aligned with the telescopic rod (10) in the vertical direction.
5. The ferrite core grinding device according to claim 1, characterized in that: The inner wall of the fixed platform (1) is located below the interception net (3) and is fixedly connected to a connection cover (16), and the output end of the connection cover (16) is connected to a coolant recovery tank via a pipeline.
6. A ferrite core grinding device according to claim 2, characterized in that: The outer wall of one end of the limiting rod (17) inserted into the sliding sleeve (18) matches the shape of the inner wall of the sliding sleeve (18); the cross-section of the inner wall of the sliding sleeve (18) is non-circular.