Magnetic disk for friction stir welding

Abstract

The magnetic disk for friction stir welding comprises a magnetic disk body, at least one magnetic assembly, an outgoing line connector and a temperature sensor, the at least one magnetic assembly is arranged in the magnetic disk body, the outgoing line connector is arranged at the bottom of the magnetic disk body, and the temperature sensor is arranged in the center of the magnetic disk body. The magnetic field generated by the integral structural design is stronger, the surface magnetic penetration height is higher, the surface magnetic field of the magnetic disk reaches more than 5000GS, and iron workpieces can be adsorbed by a plurality of stacked non-iron workpieces such as aluminum and copper, so that the plurality of stacked non-iron workpieces such as aluminum and copper are fixed on the magnetic disk, the friction stir welding processing is facilitated, and the production efficiency is improved. The friction stir welding tool bit has the advantages of being high in welding efficiency, short in welding period, good in welding effect and low in cost, and effectively solves the problems that according to a traditional structure for fixing a workpiece through a clamp, welding machining of the friction stir welding tool bit can be blocked, welding seams are not connected, and welding spots are discontinuous.

Description

Technical Field

[0001] This utility model relates to the field of disks, and more particularly to a disk for friction stir welding. Background Technology

[0002] In the metal processing industry, it is often necessary to weld metal sheets such as aluminum and copper that are not attracted by magnets. These non-magnetically attracted metal sheets need to be fixed with clamps before welding. The specific operation is as follows: First, multiple non-magnetically attracted metal sheets are stacked on a workbench. Then, clamps are used to press the multiple non-magnetically attracted metal sheets firmly onto the workbench. Since the clamps are usually located on the edge of the workbench, when welding the joints of multiple stacked metal sheets, the clamps will obstruct the welding work of the friction stir welding head, which will easily lead to discontinuous welds and intermittent welds. To address this, a secondary welding process is required to ensure the continuity and strength of the weld joints. The secondary welding process leads to a longer welding cycle, reduced welding efficiency, and increased welding costs. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a disk for friction stir welding.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: the disk for friction stir welding includes a disk body, at least one magnetic component, a wire connector and a temperature sensor. The wire connector is installed at the bottom of the disk body, the temperature sensor is installed at the center of the disk body, and at least one magnetic component is installed inside the disk body.

[0005] One of the magnetic components includes a first electromagnetic component, a second electromagnetic component, and a third electromagnetic component, which are arranged sequentially.

[0006] The first electromagnetic component includes an excitation coil and an AlNiCo magnet, with the AlNiCo magnet installed inside the excitation coil. The structures of the second and third electromagnetic components are the same as those of the first electromagnetic component.

[0007] The first electromagnetic component has a first magnetic core above its AlNiCo magnet, the second electromagnetic component has a second magnetic core above its AlNiCo magnet, and the third electromagnetic component has a third magnetic core above its AlNiCo magnet.

[0008] Preferably, the first, second, and third magnetic cores have cubic cross-sections and are arranged sequentially on the same straight line. Each side of the first magnetic core is provided with a first neodymium iron boron magnet, and one of the first neodymium iron boron magnets is located between the first and second magnetic cores. Each side of the third magnetic core is provided with a second neodymium iron boron magnet, and one of the second neodymium iron boron magnets is located between the second and third magnetic cores. The two non-adjacent sides of the second magnetic core are provided with third neodymium iron boron magnets.

[0009] Specifically, the first NdFeB magnet has the same magnetic pole direction towards the first magnetic core, the second NdFeB magnet has the same magnetic pole direction towards the third magnetic core, the third NdFeB magnet has the same magnetic pole direction towards the second magnetic core, the first NdFeB magnet has the same magnetic pole direction towards the first magnetic core as the second NdFeB magnet has the same magnetic pole direction towards the third magnetic core, and the first NdFeB magnet has the opposite magnetic pole direction towards the first magnetic core as the third NdFeB magnet has the opposite magnetic pole direction towards the second magnetic core.

[0010] Preferably, at least one of the first, second, and third magnetic cores is provided with a magnetic field saturation sensor.

[0011] Preferably, the top of the first magnetic core is integrally formed and connected to the top of the second magnetic core, and the top of the second magnetic core is integrally formed and connected to the top of the third magnetic core.

[0012] Preferably, the first magnetic core and the AlNiCo magnet of the first electromagnetic component are fixed to the disk body by the first magnetic core mounting screw, the second magnetic core and the AlNiCo magnet of the second electromagnetic component are fixed to the disk body by the second magnetic core mounting screw, and the third magnetic core and the AlNiCo magnet of the third electromagnetic component are fixed to the disk body by the third magnetic core mounting screw.

[0013] Preferably, the edge of the disk body is provided with a plurality of disk fixing holes for fixing the disk body.

[0014] Preferably, two magnetic components are provided.

[0015] Preferably, a controller or control system is provided for signal control of components such as temperature sensor and magnetic field saturation sensor. The controller is a PLC programmable logic controller. The PLC programmable logic controller can be a programmable logic controller of model XDS-40T-D, but is not limited thereto.

[0016] Compared with existing technologies, the beneficial effects of this utility model are as follows:

[0017] 1. Its overall structural design generates a stronger magnetic field and a higher surface magnetic penetration height. The surface magnetic field of the disk reaches over 5000GS, which can attract iron workpieces (ferromagnetic workpieces, preferably low-carbon steel workpieces that produce a magnetic force) across multiple stacked non-ferrous workpieces (non-ferromagnetic workpieces are aluminum alloys, copper, titanium alloys, or austenitic stainless steel workpieces that do not produce a magnetic force on them). This allows multiple stacked non-ferrous workpieces such as aluminum and copper to be fixed on the disk, facilitating friction stir welding. It has the advantages of high welding efficiency, short welding cycle, good welding effect, and low cost. It eliminates the need for clamps to press multiple metal plates that are not magnetically attracted onto the worktable. Products processed by friction stir welding avoid the phenomenon of disjointed welds and intermittent weld points. It effectively solves the problem that the traditional structure of using clamps to fix multiple layers of metal plates would obstruct the welding process of the friction stir welding head, resulting in disjointed welds and intermittent weld points.

[0018] 2. By designing the structure of each magnetic component, it can automatically adsorb or release iron workpieces, while also having the advantages of high efficiency in adsorbing or releasing iron workpieces and strong adsorption.

[0019] 3. By installing a temperature sensor at the center of the disk body to detect the disk temperature in real time, it can achieve a high temperature warning function, avoid the excitation coil from burning out due to high temperature, and extend its service life. At the same time, by installing a magnetic field saturation sensor on at least one of the first, second and third magnetic cores, it can detect in real time whether the disk magnetization has reached the predetermined value, so as to promptly detect insufficient magnetization and avoid the phenomenon of welding failure due to the workpiece not being firmly fixed. It greatly improves the quality and yield of the workpiece. Attached Figure Description

[0020] For ease of explanation, the present invention will be described in detail below with reference to the preferred embodiments and accompanying drawings.

[0021] Figure 1 This is a top view of the disk used for friction stir welding according to this utility model.

[0022] Figure 2 This is a cross-sectional view of the disk used for friction stir welding according to this utility model.

[0023] Figure 3 This is a schematic diagram illustrating the magnetization principle of the magnetic disk for friction stir welding of this invention, which adsorbs ferrous workpieces through multiple layers of non-ferrous workpieces.

[0024] Figure 4 This is a schematic diagram illustrating the demagnetizing principle of the magnetic disk used for friction stir welding of this utility model, which releases the ferrous workpiece through multiple layers of non-ferrous workpieces. Detailed Implementation

[0025] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0027] Reference Figure 1 and Figure 2 As shown, the disk for friction stir welding of this utility model includes a disk body 1, at least one magnetic component 2, a wire connector 3, and a temperature sensor 4. At least one magnetic component 2 is installed inside the disk body 1, the wire connector 3 is installed at the bottom of the disk body 1, and the temperature sensor 4 is installed at the center of the disk body 1. Each magnetic component 2 includes a first electromagnetic component 6, a second electromagnetic component 7, and a third electromagnetic component 8, which are arranged sequentially. The first electromagnetic component 6 includes an excitation coil 9 and an AlNiCo magnet 10, with the AlNiCo magnet 10 installed inside the excitation coil 9. The structures of the second electromagnetic component 7 and the third electromagnetic component 8 are the same as those of the first electromagnetic component 6. A first magnetic core 11 is provided above the AlNiCo magnet 10 of the first electromagnetic component 6, a second magnetic core 12 is provided above the AlNiCo magnet 10 of the second electromagnetic component 7, and a third magnetic core 13 is provided above the AlNiCo magnet 10 of the third electromagnetic component 8.

[0028] In this embodiment, two magnetic components 2 are provided, which are installed side by side inside the disk body 1 and located on both sides of the temperature sensor 4. Since the length of the disk is set according to different production and processing requirements, in other embodiments, the required number of magnetic components 2 can be set according to different specifications of disks to help control the manufacturing cost of the disk, so it is not limited to this.

[0029] Reference Figure 1 and Figure 2As shown, the first magnetic core 11, the second magnetic core 12, and the third magnetic core 13 have cubic cross-sections and are arranged sequentially on the same straight line. Each side of the first magnetic core 11 is provided with a first neodymium iron boron magnet 14, and one of the first neodymium iron boron magnets 14 is located between the first magnetic core 11 and the second magnetic core 12. Each side of the third magnetic core 13 is provided with a second neodymium iron boron magnet 15, and one of the second neodymium iron boron magnets 15 is located between the second magnetic core 12 and the third magnetic core 13. The two non-adjacent sides of the second magnetic core 12 are provided with third neodymium iron boron magnets 16.

[0030] Reference Figures 1 to 4 As shown, the first neodymium iron boron magnet 14 has the same magnetic pole direction towards the first magnetic core 11, the second neodymium iron boron magnet 15 has the same magnetic pole direction towards the third magnetic core 13, and the third neodymium iron boron magnet 16 has the same magnetic pole direction towards the second magnetic core 12. The magnetic pole direction of the first neodymium iron boron magnet 14 towards the first magnetic core 11 is the same as that of the second neodymium iron boron magnet 15 towards the third magnetic core 13, while the magnetic pole direction of the first neodymium iron boron magnet 14 towards the first magnetic core 11 is opposite to that of the third neodymium iron boron magnet 16 towards the second magnetic core 12.

[0031] By adopting the above technical solution, the end of the first NdFeB magnet 14 facing the first magnetic core 11 is the S pole, the ends of the first NdFeB magnet 14 and the third NdFeB magnet 16 facing the second magnetic core 12 are the N poles, and the end of the second NdFeB magnet 15 facing the first magnetic core 11 is the S pole. After the excitation coil 9 is energized, it generates a magnetic field to magnetize the AlNiCo magnet 10. The end of the AlNiCo magnet 10 of the first electromagnetic component 6 facing the first magnetic core 11 is the S pole. The magnetic field of the AlNiCo magnet 10 of the first electromagnetic component 6 and the magnetic field of the first NdFeB magnet 14 are superimposed and converge towards the first magnetic core 11 to form a magnetic circuit. The superimposed magnetic field is enhanced. Since the energizing directions of the first electromagnetic component 6 and the third electromagnetic component 8 are the same... The second electromagnetic component 7 is energized in the opposite direction to the first electromagnetic component 6 and the third electromagnetic component 8. The magnetic field of the AlNiCo magnet 10 of the second electromagnetic component 7 and the magnetic field of the first NdFeB magnet 14 or the third NdFeB magnet 16 converge and superimpose towards the second magnetic core 12. The magnetic field of the AlNiCo magnet 10 of the third electromagnetic component 8 and the magnetic field of the second NdFeB magnet 15 converge towards the third magnetic core 13 to form a magnetic circuit. The superimposed magnetic field is enhanced. The polarity of the second magnetic core 12 of the same magnetic component 2 is opposite to the polarity of the first magnetic core 11 and the third magnetic core 13. The magnetic component 2 is magnetized. The disk generates a magnetic force on the iron workpieces 23 on multiple non-ferrous workpieces 5 such as aluminum and copper stacked on it and attracts the iron workpieces 23.

[0032] When the excitation coil 9 of the first electromagnetic component 6 is energized in the opposite direction, the energized excitation coil 9 generates a magnetic field that magnetizes the AlNiCo magnet 10 inside it in the opposite direction. The magnetic field of the AlNiCo magnet 10 of the first electromagnetic component 6 converges towards the first Neodymium Iron Boron magnet 14 after passing through the first magnetic core 11. Since the energizing directions of the first electromagnetic component 6 and the third electromagnetic component 8 are the same, and the energizing direction of the second electromagnetic component 7 is opposite to that of the first electromagnetic component 6 and the third electromagnetic component 8, the magnetic field of the AlNiCo magnet 10 of the second electromagnetic component 6... After passing through the first NdFeB magnet 14 or the third NdFeB magnet 16, the magnetic field of the AlNiCo magnet 10 of the third electromagnetic component 8 converges to the second NdFeB magnet 15 after passing through the third magnetic core 13. The magnetic component 2 has no external magnetism and thus demagnetizes. The demagnetized disk releases the iron workpiece 23 (i.e., releases the adsorption of the iron workpiece). It realizes the automatic adsorption or release of the iron workpiece 23 and has the advantages of high adsorption efficiency, high release efficiency, and firm adsorption of the iron workpiece 23.

[0033] The magnetic component 2 is magnetized, and the disk adsorbs the iron workpiece 23. When the thickness of the excitation coil 9 is set to be greater than 5 cm and the thickness of the AlNiCo magnet 10 is set to be greater than 5 cm, the above structural design makes the magnetic force generated by the disk stronger, and the surface magnetism of the disk reaches more than 5000 GS. It can adsorb the iron workpiece 23 through multiple stacked non-ferrous workpieces such as aluminum and copper 5. It can fix multiple stacked non-ferrous workpieces such as aluminum and copper 5 on the disk, so as to facilitate the friction stir welding of multiple stacked non-ferrous workpieces such as aluminum and copper 5. It has the advantages of good magnetic fixation effect, high welding efficiency, good welding effect and saving welding cost.

[0034] Reference Figures 1 to 2 As shown, at least one of the first magnetic core 11, the second magnetic core 12, and the third magnetic core 13 is provided with a magnetic field saturation sensor 17. In this embodiment, the third magnetic core 13 is provided with a magnetic field saturation sensor 17. In other embodiments, the magnetic field saturation sensor 17 may be provided on any one of the first magnetic core 11, the second magnetic core 12, and the third magnetic core 13, or both the first magnetic core 11 and the second magnetic core 12 may be provided with a magnetic field saturation sensor 17, or both the second magnetic core 12 and the third magnetic core 13 may be provided with a magnetic field saturation sensor 17, or both the first magnetic core 11 and the third magnetic core 13 may be provided with a magnetic field saturation sensor 17, or all three magnetic cores may be provided with a magnetic field saturation sensor 17. Therefore, it is not limited to this.

[0035] By adopting the above technical solution, the magnetic field saturation sensor 17 can detect in real time whether the disk magnetization has reached the predetermined value, which is conducive to timely detection of insufficient magnetization and avoids the phenomenon of unqualified welding due to the workpiece not being firmly fixed.

[0036] Reference Figures 1 to 2 As shown, the top of the first magnetic core 11 is integrally formed and connected to the top of the second magnetic core 12, and the top of the second magnetic core 12 is integrally formed and connected to the top of the third magnetic core 13.

[0037] By adopting the above technical solution, the top of the first magnetic core 11, the top of the second magnetic core 12, and the top of the third magnetic core 13 are integrally formed and connected in sequence to enhance the integral rigidity of the first magnetic core 11, the second magnetic core 12, and the third magnetic core 13, so that they can withstand stronger welding pressure and the load-bearing capacity of the disk is further enhanced.

[0038] Reference Figures 1 to 2 As shown, the first magnetic core 11 and the AlNiCo magnet 10 of the first electromagnetic component 6 are fixed to the disk body 1 by the first magnetic core mounting screw 18. The second magnetic core 12 and the AlNiCo magnet 10 of the second electromagnetic component 7 are fixed to the disk body 1 by the second magnetic core mounting screw 19. The third magnetic core 13 and the AlNiCo magnet 10 of the third electromagnetic component 8 are fixed to the disk body 1 by the third magnetic core mounting screw 20. This design makes disk maintenance simpler and more convenient, and has the advantages of low maintenance cost and high maintenance efficiency.

[0039] Reference Figures 1 to 2 As shown, the disk body 1 has several disk fixing holes 21 on its edge for fixing the disk body 1. This design facilitates the disassembly and assembly of the disk and has the advantages of low disassembly and assembly costs and high disassembly and assembly efficiency.

[0040] Specifically, the disk body 1 is filled with epoxy resin 22. The epoxy resin 22 is used to fill the gaps between the excitation coil 9, AlNiCo magnet 10, first magnetic core 11, second magnetic core 12, third magnetic core 13, first NdFeB magnet 14, second NdFeB magnet 15, third NdFeB magnet 16 and the disk body 1 to protect the first NdFeB magnet 14, second NdFeB magnet 15 and third NdFeB magnet 16 from easy corrosion and damage, making its overall structure more durable and reliable.

[0041] Its overall structural design generates a stronger magnetic field and a higher surface magnetic penetration height, with the disk's surface magnetic field reaching over 5000GS. This allows it to attract ferrous workpieces even when multiple stacked non-ferrous workpieces such as aluminum and copper are separated, thus fixing them onto the disk. When used with a friction stir welding head, the disk facilitates friction stir welding at the joints of multiple stacked non-ferrous workpieces. It boasts advantages such as high welding efficiency, short welding cycle, good welding effect, and low cost. It eliminates the need for clamps to press multiple non-magnetically attracted metal plates onto the worktable. Workpieces processed by friction stir welding avoid the phenomena of disjointed welds and intermittent weld points. It effectively solves the problem of disjointed welds and intermittent weld points caused by the traditional clamp-fixed structure, which obstructs the welding process of the friction stir welding head.

[0042] The above embodiments are merely examples of this utility model and are not intended to limit the implementation and scope of this utility model. All technical solutions that are the same as or equivalent to the contents described in the claims of this utility model should be included within the protection scope of this utility model.

Claims

1. A magnetic disk for friction stir welding, comprising a disk body, characterized by: It also includes at least one magnetic component, a cable connector, and a temperature sensor. The cable connector is installed at the bottom of the disk body, the temperature sensor is installed at the center of the disk body, and at least one magnetic component is installed inside the disk body. One of the magnetic components includes a first electromagnetic component, a second electromagnetic component, and a third electromagnetic component, which are arranged sequentially. The first electromagnetic component includes an excitation coil and an AlNiCo magnet, with the AlNiCo magnet installed inside the excitation coil. The structures of the second and third electromagnetic components are the same as those of the first electromagnetic component. The first electromagnetic component has a first magnetic core above its AlNiCo magnet, the second electromagnetic component has a second magnetic core above its AlNiCo magnet, and the third electromagnetic component has a third magnetic core above its AlNiCo magnet.

2. The magnetic disk for friction stir welding according to claim 1, characterized by: The first, second, and third magnetic cores have cubic cross-sections and are arranged sequentially on the same straight line. Each side of the first magnetic core is provided with a first neodymium iron boron magnet, and one of the first neodymium iron boron magnets is located between the first and second magnetic cores. Each side of the third magnetic core is provided with a second neodymium iron boron magnet, and one of the second neodymium iron boron magnets is located between the second and third magnetic cores. The two non-adjacent sides of the second magnetic core and the first and third magnetic cores are provided with third neodymium iron boron magnets.

3. The magnetic disk for friction stir welding according to claim 2, characterized by: The first neodymium iron boron magnet has the same magnetic pole direction towards the first magnetic core, the second neodymium iron boron magnet has the same magnetic pole direction towards the third magnetic core, the third neodymium iron boron magnet has the same magnetic pole direction towards the second magnetic core, the first neodymium iron boron magnet has the same magnetic pole direction towards the first magnetic core as the second neodymium iron boron magnet has the same magnetic pole direction towards the third magnetic core, and the first neodymium iron boron magnet has the opposite magnetic pole direction towards the first magnetic core as the third neodymium iron boron magnet has the opposite magnetic pole direction towards the second magnetic core.

4. The disk for friction stir welding according to claim 1, characterized in that: At least one of the first, second, and third magnetic cores is provided with a magnetic field saturation sensor.

5. The magnetic disk for friction stir welding according to Claim 1, characterized by: The top of the first magnetic core is integrally formed and connected to the top of the second magnetic core, and the top of the second magnetic core is integrally formed and connected to the top of the third magnetic core.

6. The magnetic disk for friction stir welding according to claim 1, characterized by: The first magnetic core and the AlNiCo magnet of the first electromagnetic component are fixed to the disk body by the first magnetic core mounting screw. The second magnetic core and the AlNiCo magnet of the second electromagnetic component are fixed to the disk body by the second magnetic core mounting screw. The third magnetic core and the AlNiCo magnet of the third electromagnetic component are fixed to the disk body by the third magnetic core mounting screw.

7. The magnetic disk for friction stir welding according to Claim 1, characterized by: The edge of the disk body is provided with several disk mounting holes for fixing the disk body.

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