Magnetic core air gap grinding adjusting tool
By designing the core air gap grinding adjustment tool, the precise grinding of the magnetic core is achieved using the limit assembly and the slide rail assembly, which solves the problems of low manual grinding efficiency and poor consistency, and improves production efficiency and product quality.
Patent Information
- Application Number
- CN202422712200.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-07
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-11-07
AI Technical Summary
The air gap control method of small-scale production transformer is manually grounded, with low efficiency, inconsistent core air gap size, and quality hazards, making product consistency difficult to ensure.
Design a core air gap grinding adjustment tool, including limit assembly and rail assembly, adjust the core height using magnetic steel and hand-twist bolts, and combine the slide rail and sandpaper for precise grinding to ensure that the core remains vertical and smooth during the grinding process.
It improves the efficiency and accuracy of core air gap grinding, ensures the consistency of product quality, saves human resources, and reduces production costs.
Smart Images
Figure CN223289554U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of magnetic core processing equipment, in particular to a magnetic core air gap grinding and adjustment tool. Background Art
[0002] High-frequency electronic transformers are devices that use the principle of electromagnetic induction to convert AC voltage and current. They are power transformers with operating frequencies exceeding medium frequencies. They mainly include coils and magnetic cores and are used in high-frequency power supplies, coupling transformers, portable electronic devices, etc.
[0003] A magnetic core is a sintered magnetic metal oxide composed of a mixture of various iron oxides. It has the characteristics of high saturation flux density Bs, low power loss Pc, and high Curie temperature Tc. It has low loss under a DC bias magnetic field and can stably transmit high-frequency power signals.
[0004] At present, the air gap control method for small-batch production of transformers is still to grind the core by hand, which has low production efficiency and seriously wastes the company's manpower and production efficiency. Manual grinding has the problem that the core cannot be sure to be perpendicular to the grinding sandpaper plane, resulting in uneven air gaps and tilted planes. There are certain quality risks and product consistency cannot be guaranteed. Utility Model Content
[0005] The purpose of the utility model is to provide a magnetic core air gap grinding and adjustment tool to solve the above problems.
[0006] In order to achieve the above objectives, the following technical solutions are provided:
[0007] A magnetic core air gap grinding adjustment tool is used in conjunction with a magnetic core. The magnetic core is a "mountain" shaped structure, and a cylinder is provided in its recessed position. The air gap grinding adjustment tool includes: a limit assembly and a slide rail assembly. The limit assembly is slidably connected to the slide rail assembly. The limit assembly includes: a main frame, a conductive frame, a magnetic steel 1, a magnetic steel 2 and a hand-tightening bolt. The main frame is a rectangular structure, a threaded hole is provided on the top, and a reserved groove is provided inside the bottom end of the main frame. The hand-tightening bolt is threadedly connected to the threaded hole provided on the top of the main frame and passes through the threaded hole to the reserved groove. The bottom of the hand-tightening bolt is connected to the magnetic steel 1 Magnetic connection, the magnetic steel 1 is a cylindrical structure, the upper and lower surfaces of the conductive frame are symmetrically provided with circular grooves, each of the circular grooves is provided with a magnetic steel 2, the magnetic steel 2 is adapted to the outer contour structure of the circular groove, the bottom of the magnetic steel 1 is magnetically connected to the magnetic steel 2 provided in the circular groove at the top of the conductive frame, the bottom ends of the conductive frame are respectively provided with limit blocks, a magnetic core is provided between the two limit blocks, the magnetic steel 2 provided in the circular groove at the bottom of the conductive frame is magnetically connected to the top of the magnetic core, the top of the magnetic core abuts the bottom of the conductive frame, and the bottom ends of the main frame are in active contact with the top surface of the slide rail assembly;
[0008] Preferably, the slide rail assembly includes: a slide rail, a slide rail frame and sandpaper. The slide rail frame is a rectangular parallelepiped structure with a grinding groove provided on the top. Slide rails are fixedly connected to both sides of the grinding groove. The length of the slide rail is the same as that of the slide rail frame. Sandpaper is provided in the middle of the bottom of the grinding groove. The back of the sandpaper is bonded to the bottom of the grinding groove. The position of the sandpaper corresponds to the position of the magnetic core to be ground.
[0009] Preferably, both ends of the slide rail are provided with a fixing bracket, the fixing bracket is a hollow structure in the middle, and the bolt passes through the fixing bracket and is fixedly installed on the side wall of the slide rail frame;
[0010] Preferably, the hand-held portion of the hand-tightening bolt is provided with a knurled structure;
[0011] Preferably, scale lines are provided on the surface of the main frame.
[0012] The beneficial effects of the utility model are:
[0013] The utility model is compact and flexible, and can be used on an ordinary work surface. It does not occupy a large working space; it has a simple structure, is easy to manufacture, has low cost, is highly efficient and environmentally friendly, can be used repeatedly, and basically does not require daily maintenance.
[0014] The movement trajectory of the main frame is restricted by the slide frame and the slide rail to ensure that the running trajectory of the magnetic core is smooth and without tilt. The magnetic core grinding height is driven by hand-tightening bolts and magnetic steel 1 and magnetic steel 2 to ensure grinding accuracy, improve productivity, save space for magnetic core air gap grinding operations, and ensure that product quality consistency is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a three-dimensional diagram of the utility model;
[0016] Figure 2 This is the section of the utility model Figure 1 ;
[0017] Figure 3 This is the section of the utility model Figure 2 ;
[0018] Figure 4 This is an exploded view of the utility model;
[0019] The reference numerals shown in the figure are: 1 main frame, 2 conduction frame, 3 magnet one, 4 magnet two, 5 hand-tightening bolt, 6 threaded hole, 7 reserved groove, 8 circular groove, 9 slide rail, 10 slide rail frame, 11 sandpaper, 12 grinding groove, 13 fixing bracket, 14 bolt, 15 limit block, 16 magnetic core. DETAILED DESCRIPTION
[0020] The following is a detailed description of this design scheme with reference to the accompanying drawings.
[0021] A magnetic core air gap grinding adjustment tool is used in conjunction with a magnetic core 16. The magnetic core 16 is a "mountain" shaped structure. The air gap grinding adjustment tool includes: a limit assembly and a slide rail assembly. The limit assembly is slidably connected to the slide rail assembly. The limit assembly includes: a main frame 1, a conductive frame 2, a magnetic steel 3, a magnetic steel 2 4 and a hand-tightening bolt 5. The main frame 1 is a rectangular structure and is made of 7A04 aluminum alloy. It is light in weight and high in hardness, which is convenient for flexible use and improves service life. A threaded hole 6 is provided on the top of the main frame 1. A reserved groove 7 is provided inside the bottom end of the main frame 1. The conductive frame 2 can be installed in the reserved groove 7. The hand-tightening bolt 5 is threadedly connected to the threaded hole 6 on the top of the main frame 1 and passes through the threaded hole 6 to the reserved groove 7. The magnetic core 16 and the conductive frame 2 can be moved synchronously by the hand-tightening bolt 5. The bottom of the hand-tightening bolt 5 is magnetically connected to the magnetic steel 3. The magnetic steel 3 is cylindrical Body structure, circular grooves 8 are symmetrically provided on the upper and lower surfaces of the conductive frame 2, and each circular groove 8 is provided with a second magnetic steel 4, which is adapted to the outer contour of the circular groove 8. The bottom of the magnetic steel 3 is magnetically connected to the magnetic steel 2 4 provided in the circular groove 8 at the top of the conductive frame 2. Through the magnetic steel 1 3 and the magnetic steel 2 4, the hand-tightening bolt 5 drives the magnetic core 16 to adjust its height and control the grinding thickness. Limit blocks 15 are respectively provided at both ends of the bottom of the conductive frame 2. A magnetic core 16 is installed between the two limit blocks 15. The magnetic core 16 is limited by the limit blocks 15 to prevent it from tilting or shifting during movement. The magnetic steel 2 4 provided in the circular groove 8 at the bottom of the conductive frame 2 is magnetically connected to the top of the magnetic core 16, and the top of the magnetic core 16 abuts against the bottom of the conductive frame 2. Both ends of the main frame 1 are in active contact with the slide rail assembly, so that the main frame 1 can perform directional movement on the slide rail assembly;
[0022] In some embodiments, the slide rail assembly includes: a slide rail 9, a slide rail frame 10 and sandpaper 11. The slide rail frame 10 is a groove structure, and a grinding groove 12 is provided on the top thereof. The slide rail 9 is fixedly connected on both sides of the grinding groove 12. The slide rail 9 is made of 45# steel, which is wear-resistant and has a long service life. The U-shaped groove design is adopted, and the grinding plane of the magnetic core can be fine-tuned. The slide rail 9 abuts against both ends of the bottom surface of the main frame 1. The length of the slide rail 9 is the same as that of the slide rail frame 10. Sandpaper 11 is provided in the middle of the grinding groove 12. The back of the sandpaper 11 is bonded to the bottom of the grinding groove 12. The position of the sandpaper 11 corresponds to the position where the magnetic core 16 needs to be ground. By moving the main frame 1, the magnetic core 16 is driven to move and grind at the position of the sandpaper 11 to meet the air gap adjustment requirements.
[0023] In some embodiments, a fixed bracket 13 is provided at both ends of the slide rail 9. The fixed bracket 13 is a hollow structure in the middle. The bolt 14 passes through the fixed bracket 13 and is fixedly installed on the side wall of the slide rail frame 10. If necessary, a gasket can be set between the bolt 14 and the fixed bracket 13. By adjusting the tightness of the bolt 14, a small amount of copper foil can be padded under the slide rail 9 to adjust the height. The height of the fixed bracket 13 relative to the slide rail frame 10 can be adjusted to control the height of the slide rail 9, and the grinding thickness of the magnetic core 16 can be adjusted to ensure that the two slide rails 9 are placed horizontally.
[0024] In some embodiments, the hand-held portion of the hand-tightening bolt is provided with a knurled structure.
[0025] In some embodiments, scale lines are provided on the surface of the main frame.
[0026] Working principle:
[0027] Place the magnetic core 16 between the two limit blocks 15 at the bottom of the conductive frame 2, and adsorb it through the magnetic steel 2 4, so that the magnetic core 16 is fixed in the conductive frame 2, rotate the hand-tightening bolt 5, and adjust the height of the magnetic core 16 through the magnetic steel 1 3 and the magnetic steel 2 4. After the required grinding height is met, hold the main frame 1 and make reciprocating motion on the slide rail 9. Use the sandpaper 11 on the slide rail frame 10 to grind the bottom of the magnetic attraction until powder stops falling.
[0028] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
[0029] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.
Claims
1. A magnetic core air gap grinding and adjustment tool, used in conjunction with a magnetic core, the magnetic core is a "mountain" shaped structure, characterized in that: The air gap grinding adjustment tool includes: a limit assembly and a slide rail assembly, the limit assembly is slidably connected to the slide rail assembly, the limit assembly includes: a main frame, a conductive frame, a magnetic steel 1, a magnetic steel 2 and a hand-tightening bolt, the main frame is a rectangular structure, a threaded hole is provided on the top, a reserved groove is provided inside the bottom end of the main frame, the hand-tightening bolt is threadedly connected to the threaded hole provided on the top of the main frame and passes through the threaded hole to the reserved groove, the bottom of the hand-tightening bolt is magnetically connected to the magnetic steel 1, the magnetic steel 1 is a cylindrical structure, the conductive frame Circular grooves are symmetrically provided on the upper and lower surfaces of the frame, and a second magnetic steel is provided in each of the circular grooves. The second magnetic steel is adapted to the outer contour structure of the circular groove. The bottom of the first magnetic steel is magnetically connected to the second magnetic steel provided in the circular groove at the top of the conductive frame. Limit blocks are respectively provided at both ends of the bottom of the conductive frame, and a magnetic core is provided between the two limit blocks. The second magnetic steel provided in the circular groove at the bottom of the conductive frame is magnetically connected to the top of the magnetic core, and the top of the magnetic core abuts against the bottom of the conductive frame. The two ends of the bottom of the main frame are in active contact with the top surface of the slide rail assembly.
2. A magnetic core air gap grinding and adjustment tool according to claim 1, characterized in that: The slide rail assembly includes: a slide rail, a slide rail frame and sandpaper. The slide rail frame is a rectangular structure with a grinding groove on the top. Slide rails are fixedly connected on both sides of the grinding groove. The length of the slide rail is the same as that of the slide rail frame. Sandpaper is provided in the middle of the bottom of the grinding groove. The back of the sandpaper is bonded to the bottom of the grinding groove. The position of the sandpaper corresponds to the position of the magnetic core to be ground.
3. A magnetic core air gap grinding and adjustment tool according to claim 2, characterized in that: Both ends of each slide rail are provided with a fixing bracket, and the fixing bracket is a hollow structure in the middle. The bolt passes through the fixing bracket and is threadedly connected to the side wall of the slide rail frame.
4. The magnetic core air gap grinding and adjustment tool according to claim 1, characterized in that: The hand-held portion of the hand-tightening bolt is provided with a knurled structure.
5. The magnetic core air gap grinding and adjustment tool according to claim 1, characterized in that: The surface of the main frame is provided with scale lines.