CN212665542U

CN212665542U - Ultra-fine magnetic disc with Al-Ni-Co and Nd-Fe-B magnetic steel cross laid on U-shaped iron core

Info

Publication number: CN212665542U
Application number: CN201922259616.1U
Authority: CN
Inventors: 周亦
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-13
Filing date: 2019-12-13
Publication date: 2021-03-09
Anticipated expiration: 2029-12-13

Abstract

The ultra-fine dense magnetic disk is an electric control permanent magnetic disk, wherein the alnico and the ndfeb are crossed and laid on the U-shaped iron core, the alnico with reversible polarity and the ndfeb with irreversible polarity are crossed and laid on the U-shaped parallel strip-shaped iron core in pairs, and the planes are attached to each other and are sequentially laid on the iron cores; the other magnetic pole surface of the plane magnetic steel group is clung to the bottom surface of the ultra-fine dense magnetic panel. When the exciting coil in the U-shaped parallel iron core electromagnetic component is electrified with forward or reverse instantaneous current, the polarity reversible magnetic steel is changed into the N.S polarity direction, and the permanent magnetic force of the two types of magnetic steel is superposed when the magnetic disk is magnetized, so that the magnetic disk is in a working state; when demagnetizing, the two kinds of plane magnetic steel group are closed in the magnetic force line to be the non-magnetic state of the magnetic disk. The panel of the magnetic disk is in a uniform dense magnetic structure form, has the characteristics of dense magnetic lines and low height, and is beneficial to processing operation of high-precision thin workpieces or processing operation requiring extremely small magnetic interference. Meanwhile, the magnetic disk is not electrified during working, the temperature rise is very low, and accidents caused by power failure of a power grid are avoided.

Description

Ultra-fine magnetic disc with Al-Ni-Co and Nd-Fe-B magnetic steel cross laid on U-shaped iron core

Technical Field

The patent relates to an ultra-fine magnetic disk which is formed by alternately paving alnico and neodymium iron boron magnetic steel on a U-shaped iron core, is an electric control type permanent magnetic disk and is used for machining of a milling center and precise grinding as a positioning and fixing magnetic tool.

Background

The traditional electric control permanent magnetic disk is thick and has the following defects:

1. the magnetic pole of the magnetic disk is thick, the magnetic force line is not dense enough, and the thin workpiece is not attracted.

2. The magnetic line of force of the common electric control permanent magnetic disk has large passing height, and the magnetic interference phenomenon exists in the use of a precise milling machining center.

3. The traditional electric control permanent magnetic disk is large in size, and the application range is influenced.

Disclosure of Invention

The magnetic steel consists of an ultra-fine mesh dense magnetic panel, a U-shaped parallel iron core electromagnetic component, a polar reversible change aluminum nickel cobalt type rectangular plane magnetic steel group and a polar irreversible change neodymium iron boron type rectangular plane magnetic steel group, and the purpose of superposing and reducing the permanent magnetic force in the two types of magnetic steel is realized by changing the direction of the exciting current of the electromagnetic component.

The utility model discloses a realize through following technical scheme: the ultra-fine mesh magnetic panel of the ultra-fine mesh magnetic disc is formed by overlapping thin copper plates, magnetic conductive thin plates and side polar plate planes, wherein the aluminum-nickel-cobalt and neodymium-iron-boron magnetic steel are crossly and flatly paved on a U-shaped iron core, N.S.N.S.N.S.S dense magnetic poles can be formed, the thicknesses of the two thin plates are randomly selected according to the proportion of 1: 3, and the ultra-fine mesh magnetic panel can be arranged according to the ultra-fine mesh degree of 0.5 mm: 1.5 mm. Therefore, the electric control permanent magnetic disk has the remarkable advantages of uniform magnetic full-working area, dense magnetic lines and low magnetic line passing height. The U-shaped parallel iron core electromagnetic component consists of a U-shaped parallel strip-shaped iron core and excitation coils sleeved on the U-shaped parallel strip-shaped iron core, and the directions of magnetic fields generated by two adjacent excitation coils are opposite. The two types of aluminum-nickel-cobalt magnetic steels with reversible polarities and the neodymium-iron-boron magnetic steels with irreversible polarities are paved on the plane of the U-shaped parallel strip-shaped iron cores in a pairwise crossing manner, are attached to each other, have the same overall dimension and the same quantity, and are placed on two adjacent U-shaped iron cores, and the polarity of the irreversible neodymium-iron-boron magnetic steels is opposite. It is controlled and operated as follows: firstly, the electromagnetic component is instantaneously electrified with forward excitation current, so that the N & S polarity of the alnico magnetic steel is changed to be consistent with the N & S polarity of the ndfeb magnetic steel, then the electromagnetic component is closed, and the magnetic lines of the two types of magnetic steel of the rectangular plane magnetic steel group are independently superposed; secondly, the electromagnetic component is instantaneously electrified with reverse excitation current to change the N & S poles of the magnetic steel with the reversible polarity into the magnetic steel with the irreversible polarity, then the power is cut off, the magnetic force lines of the two types of magnetic steel which are paired in pairs are closed, and the whole magnetic device is in a non-magnetic state. Under normal permanent magnetism magnetic force stack operating condition, the electromagnetism part need not circular telegram, so when electric power system broke down or the network power failure, rectangle plane magnet steel group spare all can keep the fixed action of magnetic force.

Drawings

Fig. 1 and 2 are schematic structural diagrams of ultra-fine magnetic disks formed by aluminum-nickel-cobalt and neodymium-iron-boron magnetic steel which are crossly paved on a U-shaped iron core.

Fig. 3 and 4 are schematic diagrams of magnetic circuits of ultra-fine magnetic disks with alnico and ndfeb magnetic steel crossed and laid on a U-shaped iron core.

1-side polar plate 2-aluminum frame 3-U-shaped parallel iron core

4-magnetic conductive thin plate 5-exciting coil 6-polarity irreversible neodymium iron boron magnetic steel

7-polarity reversible AlNiCo magnet steel 8-thin copper plate 9-workpiece

Detailed Description

Fig. 1 and 2 are schematic diagrams of a structure of an alnico and ndfeb magnetic steel ultra-fine magnetic disk which is crossly laid on a U-shaped iron core, wherein fig. 1 is a front view, and fig. 2 is a top view. The main components are a superfine dense magnetic panel component, a U-shaped parallel iron core electromagnetic component and a polar reversible change aluminum nickel cobalt type and polar irreversible change neodymium iron boron type plane magnetic steel group component. The ultra-fine magnetic panel component consists of a thin copper plate 8, a magnetic conductive thin plate 4 and a side polar plate which are overlapped in a plane, and the U-shaped parallel iron core electromagnetic component consists of a U-shaped parallel iron core 3 and an exciting coil 5 sleeved on the U-shaped parallel iron core. The lower planes of the reversible-polarity aluminum-nickel-cobalt magnetic steel 7 and the irreversible-polarity neodymium-iron-boron magnetic steel 6 are crossed and laid on the plane of the U-shaped parallel iron core, and are attached to each other two by two; the upper plane of the magnetic steel group is attached to the bottom plane of the ultra-fine mesh magnetic panel, and the superposition direction of the thin copper plate and the magnetic thin plate of the ultra-fine mesh magnetic panel is parallel to the U-shaped parallel strip-shaped magnetic core; the aluminum frame 2 is clamped between the upper ultra-fine dense magnetic panel component and the U-shaped parallel iron core electromagnetic component, and is a part for sealing and radiating.

Fig. 3 is a schematic diagram of the superposition of magnetic forces of two types of rectangular plane magnetic steel groups. In the figure, an exciting coil of an electromagnetic component is electrified with instantaneous forward current, so that the N & S polarity direction of the alnico magnetic steel in the rectangular plane magnetic steel group is changed and is the same as the N & S polarity direction of the alnico magnetic steel; after the electromagnetic component is powered off, the magnetic lines of force of the two types of magnetic steel in the rectangular plane magnetic steel group are automatically superposed, phi is phi A + phi B, and the suction object 9 is in a sucked state.

FIG. 4 is a schematic view of a non-magnetic state. In the figure, an exciting coil of an electromagnetic component is electrified with instantaneous reverse current, a reverse electromagnetic energy is used for changing the N.S polarity direction of the AlNiCo magnetic steel in the rectangular plane magnetic steel group and is closed with the magnetic force line of the AlNiCo magnetic steel with the irreversible polarity to form a nonmagnetic state, phi₁＝ΦA+ΦB＝0，Φ₂The holder 9 is in the released state when Φ C + Φ D is 0.

Claims

1. The magnetic pole plane of the magnetic steel is tightly attached to the plane of each parallel iron core of the U-shaped parallel iron core to form an AlNiCo magnetic steel and a NdFeB magnetic steel, the AlNiCo magnetic steel and the NdFeB magnetic steel have the same appearance size and the same quantity, the two sides of the AlNiCo magnetic steel and the NdFeB magnetic steel are close to each other and are fully paved on the plane of all the U-shaped parallel iron cores, the magnetic pole direction of the irreversible NdFeB magnetic steel arranged on each magnetic core is the same, and the magnetic pole directions of the irreversible NdFeB magnetic steel arranged on two adjacent U-shaped parallel iron cores are opposite; the upper planes of the two types of rectangular plane magnetic steel groups are closely attached to the lower plane of the ultra-fine mesh magnetic panel.

2. The alnico and ndfeb magnetic steel of claim 1 crossed and laid on a U-shaped iron core to form a super fine magnetic disk, wherein the super fine magnetic panel is formed by laminating thin copper plates, magnetic conductive thin plates and side pole plates with a spacer plane; the side polar plate, the thin copper plate and the magnetic conductive thin plate are spliced at intervals, and the splicing direction of the side polar plate, the thin copper plate and the magnetic conductive thin plate is parallel to the arrangement direction of the U-shaped parallel iron cores.

3. The alnico and ndfeb magnetic steel ultra-fine magnetic disk crossed and laid on the U-shaped iron core as claimed in claim 1, wherein the U-shaped parallel iron core electromagnetic component is composed of a plurality of bar-shaped U-shaped parallel iron cores and exciting coils sleeved thereon, and the directions of electromagnetic fields of the exciting coils on two adjacent U-shaped parallel iron cores are opposite when the exciting coils are energized.

4. The alnico and ndfeb magnetic steels of claim 1 are crossed and laid on a U-shaped iron core to form a super fine magnetic disk, wherein one type of magnetic steel can change the magnetic pole direction of the magnetic steel when the exciting coil changes the direction of the exciting current, and is alnico magnetic steel with reversible polarity; another kind of magnetic steel can not change its inherent magnetic pole direction when the exciting coil changes the exciting current direction, and is neodymium iron boron magnetic steel whose polarity can not be reversed.