Vertical neodymium iron boron and aluminum-nickel-cobalt magnetic steel electromagnetic and permanent magnetic disk inserted between parallel iron cores

Abstract

Neodymium iron boron is inserted between vertical parallel iron cores, the aluminum-nickel-cobalt magnetic steel electromagnetic and permanent magnet disk is formed by stacking a plurality of small magnetic units in parallel, magnetizing, demagnetizing and electromagnetic stress application operations can be completed in the simple small units, and the small magnetic units with complete functions are standard magnetic modules. According to the magnetic module, polarity-reversible aluminum-nickel-cobalt magnetic steel and polarity-irreversible neodymium-iron-boron magnetic steel are inserted between two vertical parallel iron cores side by side up and down, and an electromagnetic coil is sleeved on the aluminum-nickel-cobalt magnetic steel to form a double-U-shaped ultra-short magnetic circuit, so that the magnetic loss of magnetic force transmitted along the way is reduced to the minimum, and the efficiency of a magnetic system is obviously improved.

Description

Technical Field

[0001] The present invention relates to a magnetic tool for positioning and fixing, in which NdFeB and AlNiCo magnets are inserted between vertical parallel iron cores and the magnetic disk is used in the machinery manufacturing industry. Background Art

[0002] Traditional electric controlled magnetic fixing devices or disks are divided into two categories, one is ordinary electromagnetic disks, and the other is electric controlled permanent disks. Their shortcomings are:

[0003] 1. Ordinary electromagnetic disks must be continuously powered on during operation, and the temperature rises continuously. In addition, the temperature rise of each disk component varies greatly, causing uneven thermal deformation and affecting the disk positioning processing accuracy.

[0004] 2. Ordinary electric-controlled permanent magnet disks have poor ability to penetrate the air gap and are not suitable for rough machining and heavy cutting operations. Summary of the invention

[0005] The present invention, firstly, forms an independent magnetic unit by two vertically parallel magnetic conductive plates (iron cores) and polarity irreversible NdFeB magnets, polarity reversible AlNiCo magnets, magnetic conductive plates, and electromagnetic coils inserted therebetween; the NdFeB magnets and AlNiCo magnets are placed side by side vertically between the two magnetic conductive plates (iron cores), their magnetic pole directions are perpendicular to the side surfaces of the vertical parallel iron cores, and their planes are close to each other, the NdFeB magnets are placed on the top, the NdNiCo magnets and the magnetic conductive plates attached thereto are placed on the bottom, and the electromagnetic coils are sleeved on the AlNiCo magnets and the magnetic conductive plates attached thereto, and all magnetization, demagnetization, and electromagnetic force addition operations can be completed in this simple small unit. This independent magnetic unit is a magnetic module. Multiple independent magnetic units are combined and superimposed in parallel to form a large magnet, that is, a rectangular disk. Different placement and combination of magnetic modules form various disk forms, such as square, polygonal or other irregular styles, to meet the needs of different projects or processing methods. Second, the NdFeB and AlNiCo in the magnetic unit are laid side by side vertically to form a double U-shaped three-dimensional permanent magnetic circuit, which shortens the length of the magnetic circuit and significantly improves the efficiency of the permanent magnetic system. Third, the electromagnetic coil is powered on and then powered off. At this time, the magnetic pole directions of the NdFeB and AlNiCo planar magnets are all the same, and the permanent magnetic lines of force gather on the workpiece, forming a temperature-free Medium-strong permanent magnetic force; fourth, the AlNiCo magnets and the magnetic conductive plate are overlapped together in the direction of the magnet poles. The overall thickness of their combination is consistent with that of the NdFeB magnets, but the ratio of their respective thicknesses can be adjusted, which will change the strength of the magnetic force of the disk, but will not significantly affect the demagnetization effect; fifth, the disk electromagnetic coil is continuously passed through a positive maintaining current, so that the disk permanent magnetic field lines and the electromagnetic magnetic field lines squeeze each other, so that the combined magnetic force of the disk rises to a super-strong state; sixth, the disk electromagnetic coil is passed through an instantaneous reverse current, so that the magnetic pole direction of all AlNiCo magnets with reversible polarity is reversed, and closed within the magnetic field lines of the adjacent NdFeB magnets with irreversible polarity laid side by side, and the disk is in a demagnetized state.

[0006] Compared with traditional magnetic disks, the present invention has the advantages of large magnetic force, uniform magnetism, adjustable magnetic force, safety and reliability, and super-finishing operation without temperature rise. At the same time, magnetic disk manufacturing can realize a modular production model, so that various magnetic disks and magnetic devices can be assembled, which significantly reduces the production cost and manufacturing cycle of large magnetic devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 , Figure 2 It is a schematic diagram of the structure of an electromagnetic plus permanent magnetic disk with neodymium iron boron and aluminum nickel cobalt magnets inserted between vertical parallel iron cores.

[0008] Figure 3 to Figure 5 It is a magnetic circuit schematic.

[0009] 1-Vertical parallel core 2-Polarity irreversible NdFeB magnet

[0010] 3- Polarity reversible AlNiCo magnet 4- Magnetic plate 5- Electromagnetic coil

[0011] 6-base plate 7-magnetic isolation copper plate 8-sealant 9-workpiece DETAILED DESCRIPTION

[0012] Figure 1 , Figure 2 It is a schematic diagram of the structure of a vertical parallel iron core with NdFeB and AlNiCo magnets inserted between them. Figure 1 is a front view, Figure 2 This is a top view. The overall disk is composed of several magnetic units or magnetic modules stacked together.

[0013] The magnetic module is composed of two vertical parallel iron cores 1, a magnetic isolation copper plate 7, a polarity irreversible NdFeB magnet 2, a polarity reversible AlNiCo magnet 3, a magnetic conductive plate 4, an electromagnetic coil 5, and a magnetic isolation copper plate 7. The polarity reversible AlNiCo magnet and the magnetic conductive plate are overlapped and inserted into the electromagnetic coil together. Multiple magnetic modules are fastened to the bottom plate 6 side by side with screws and filled with sealant 8 to form a combined large magnetic disk.

[0014] Figure 3-5 It is a magnetic circuit schematic.

[0015] Figure 3 This is a schematic diagram of the permanent magnetic superposition magnetic circuit. In the figure, an instantaneous positive current is passed through the electromagnetic coil, which changes the N·S polarity direction of the polarity reversible AlNiCo magnet, and the N·S polarity direction is the same as that of the polarity irreversible NdFeB magnet. After the electromagnetic power is cut off, the magnetic lines of the two types of permanent magnetic steel groups are superimposed on each other.

[0016]

[0017] Figure 4 This is the principle diagram of the superposition of electromagnetic force and permanent magnetic force. The electromagnetic coil is continuously energized in the positive direction, and the positive electromagnetic energy changes the direction of the polarity reversible AlNiCo magnetic steel magnetic force lines to a state consistent with the N·S magnetic pole direction of the electromagnetic magnetic force lines and consistent with the N·S magnetic pole direction of the polarity irreversible NdFeB magnetic steel magnetic force lines. At this time, the object is subjected to the superposition of three unidirectional electromagnetic magnetic force lines φE and two types of permanent magnetic steel group magnetic force lines φPA and φPB, and the magnetism is strong.

[0018]

[0019] Figure 5 This is the principle diagram of the demagnetization state. In the figure, the electromagnetic coil is passed through an instantaneous reverse current, and a reverse electromagnetic energy is used to change the N·S polarity direction of the polarity reversible AlNiCo magnet, and the direction is opposite to the N·S polarity of the polarity irreversible NdFeB magnet. After the electromagnetic coil is powered off, the magnetic force lines of the polarity reversible and irreversible magnets in the permanent magnet are closed, forming a demagnetization state.

[0020]

Claims

1. Insert NdFeB, AlNiCo magnets and permanent magnets between vertical parallel cores. Its characteristics are: polarity The reversible AlNiCo together with the magnetic conductive plate is inserted into the electromagnetic coil and the polarity irreversible NdFeB two types of planar magnet groups, and inserted side by side up and down between two vertical parallel iron cores in contact with their planes. Their magnetic pole directions are perpendicular to the sides of the vertical parallel iron cores, and the planes are close to each other, with the NdFeB magnet on the top and the AlNiCo magnet on the bottom.

2. According to claim 1, the vertical parallel cores are inserted with NdFeB, AlNiCo magnets and permanent magnets, characterized in that: It is composed of multiple small units stacked in parallel. This simple small unit can complete magnetization, demagnetization and electromagnetic force operations. This fully functional small magnetic unit is a standard magnetic module. This magnetic module consists of two vertical parallel iron cores with polarity reversible AlNiCo magnets and polarity irreversible NdFeB magnets inserted side by side. The electromagnetic coil is sleeved on the AlNiCo magnet to form a double U-shaped ultra-short magnetic circuit.

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