KR20070074007A - The ring magnet of tilted magnetic field and it's manufacturing method - Google Patents

Abstract

A ring magnet having a tilted magnetic field and a manufacturing method thereof are provided to freely magnetize the ring magnet by applying an impulse current to a coil wound around a permanent magnet material. A ring magnet magnetizing unit(10) includes an outer diameter magnetizing coil, an inner diameter magnetizing coil, a magnet material(11), and a coil. The outer and inner diameter magnetizing coils flow a forced current to the ring magnet magnetizing unit. The magnet material is made of a rare earth material, which is magnetized by the magnetic field. The magnetic field is generated by the coils. The magnetizing coils are electrically connected to each other, such that the coils are magnetized by a single current. A magnetizing yoke(12a) is installed on a body structure(19) of the magnetizing unit. The ring magnet material is arranged on a magnetized portion of the magnetizing yoke. The magnet material is arranged on a supporter and magnetized by a strong magnetic field. The ring magnet material is rotated by a predetermined angle.

Description

Ring magnet having tilting angle and its manufacturing method {The Ring Magnet of Tilted Magnetic Field and It's Manufacturing Method}

1 is a magnetic line diagram of the bar magnet.

2 is a magnetic line diagram of a conventional inner and outer diameter monopolar ring magnet.

Figure 3 is a magnetic field line of the inclination-oriented inner and outer diameter monopole ring magnet of the present invention.

Figure 4 is a magnetic field line of the inclination-oriented upper and lower one-pole ring magnet of the present invention.

5 is a top view of the inclination-oriented inner and outer diameter 1 pole magnetizer according to the first embodiment of the present invention.

6 is a perspective view of the ring magnet magnetizer of FIG.

7 is a perspective view of the magnetizing yoke of the magnetizer of FIG. 5;

FIG. 8 is a cross-sectional view (A-A) of the magnetizing yoke portion of the magnetizer of FIG. 5; FIG.

FIG. 9 is a cross-sectional view (B-B) of a magnet material mounting portion of the magnetizer of FIG. 5; FIG.

10 is a top view of the inclined orientation up-down one pole magnetizer according to the second embodiment of the present invention.

FIG. 11 is a perspective view of the inclined upward and downward polarity ring magnet magnetizer of FIG. 10; FIG.

12 is a top view of the magnetizing yoke in the magnetizer of FIG. 10 in the material loading-unloading position;

FIG. 13 is a perspective view of a magnetizing yoke of the magnetizer of FIG. 10; FIG.

FIG. 14 is a view illustrating a ring magnet by arranging anisotropic partial magnets in a circumference; FIG.

(Explanation of symbols for the main parts of the drawing)

One; General bar magnet

2; Conventional ring magnet

11; Slope-oriented internal / external diameter 1 pole ring magnet

21; Slope-oriented up and down 1 pole ring magnet

10; Ring magnet internal and external diameter magnetizer

20; Ring magnet up and down magnetizer

12a, 12b, 22a, 22b; Magnetized yoke

13; Magnetized core

14a, 14b; Magnet coil

19,29; Magnetizer base

31; Partial magnet of prefabricated ring magnet

The present invention relates to a ring magnet having an inclination orientation angle and a method of manufacturing the same, and more particularly, a ring-shaped permanent magnet material having no magnetic field, using a magnetizer having a fixed inclination angle on the surface of a magnet yoke. The present invention relates to a ring magnet and a method of manufacturing the same, in which a magnetic field is formed by injecting a magnet into the magnetizer, and a permanent magnet material is magnetized by flowing an impulse current through the coil.

Conventionally, the radially oriented ring magnet and the up-and-down magnetizing ring magnet whose main direction of magnetic lines are directed from the center of the ring to the outside are used in various motors because of their excellent magnetic properties and free magnetization. However, since the inner and outer diameter monopole and the upper and lower monopole ring magnets having an inclination angle were not required by the industry, a production method was not proposed.

Accordingly, the present invention proposes a ring magnet having a tilting angle, which is a key component of the "power generator using magnetic force" (Korean Application No. 10-2005-0129230), and a manufacturing method thereof.

SUMMARY OF THE INVENTION An object of the present invention is to provide a ring magnet (upper and lower pole, inner and outer diameter pole 1) and a manufacturing method thereof having an inclination orientation angle in view of the above problems.

The ring magnet of the present invention has an inclination angle, and is characterized by a series of continuous magnetizations to achieve this.

More specifically, the first step in which the magnetizing yoke puts a ring-shaped magnet material on a magnetizer having a predetermined inclination angle on the surface of the magnet material, a second step of generating a magnetic field and magnetizing the magnetizer by a predetermined angle in the magnetizer. A third step of rotating the magnet material, wherein the second step and the third step is repeatedly performed until the entire circumference of 360 degrees of the ring magnet material is magnetized. It consists of a rotating continuous magnetizing method which generates a magnetic field by applying a current to the magnetizing coil every time it rotates by a predetermined angle while rotating at a speed. Here, the shape of the magnetized core surface in contact with the magnetizing object is preferably produced in a shape in which the core and the magnetizing object are in contact.

Hereinafter, a magnetizer and a magnetization method according to preferred embodiments of the present invention will be described.

First, the magnetic force line direction of a conventional magnet will be described with reference to FIGS. 1 and 2.

FIG. 1A shows the direction of the magnetic lines of the general bar magnet 1, and FIG. 1B shows the representative lines of the magnetic field of the bar magnets. In the drawings of the present invention are shown as representative magnetic lines.

 FIG. 2 shows a representative magnetic field line of a conventional inner and outer diameter monopolar ring magnet 2. Looking at the characteristics of the representative magnetic line in Figure 2, the extension line of the magnetic force line is diverging from the inner center point of the ring magnet (2) toward the outside. Conventional inner and outer diameter monopolar ring magnets are generally called radial magnetized ring magnets, and their manufacturing methods are proposed in Korean Patent Publication Nos. 10-2005 -0059102 and 10-2004-0015032, and are classified into special magnetization methods. .

Next, a ring magnet having an inclination orientation angle (hereinafter, referred to as an inclination orientation ring magnet) proposed by the inventor will be described with reference to FIGS. 3 and 4. FIG. 3 is a line of magnetic force of an inner and outer diameter monopole magnet (hereinafter, referred to as an inclined orientation inner and outer pole magnet) having an inclination orientation angle, and FIG. 4 is an upper and lower one pole magnet having an inclination orientation angle (hereinafter, referred to as an inclined orientation up and down pole) The representative magnetic field lines of magnets). 3A and 4A show the representative magnetic field lines viewed from the front of the ring magnets 11 and 21, and FIG. 3B is the representative magnetic field lines viewed from the side of the ring magnets 11, and FIG. 4B shows the representative magnetic lines of the ring magnets 21. Representative magnetic field lines seen from the CC section. In the inclination-oriented ring magnet, the extension line of the representative magnetic force line does not pass through the center of the ring, and is perpendicular to the magnetic surface when the representative magnetic force line enters and exits the surface of the magnet. Has Ta). A magnet having a predetermined tilt angle and a method of manufacturing the same are problems to be solved by the present invention.

Next, the inclination-oriented inner and outer diameter monopole ring magnet magnetizer 10 and its magnetizing method according to the first embodiment of the present invention will be described with reference to FIGS. 5 is an inclination-oriented inner and outer diameter monopole ring magnet magnetizer 10 according to the first embodiment of the present invention, the structure of the outer diameter magnetizing coil to flow a current to the magnetizer as shown in Figs. 14a and the inner diameter magnetizing coil 14b and the core 13 which is a passage which supplies the magnetic flux which generate | occur | produced in said coils to the magnet material 11 (for example, rare earth material) to be magnetized.

In the magnetizing yoke 12a shown in Fig. 7, the magnetizing coils 14a and 14b are preferably electrically connected in series to generate magnetic flux with one current. The inner diameter magnetizing coil 14b may be omitted when the installation of the inner diameter of the magnet material 11 is small and difficult. However, the inner diameter core may be omitted since the inner diameter core is a magnetic field conductor and helps to form the inner diameter magnet. And the magnetizing core surface 15 for supplying the magnetic flux in contact with the magnet material 11 in the core 13 of the magnetizer 10 as shown in the shape in contact with the magnet material 11 as shown in Figs. It is preferable to produce.

FIG. 6 is an oblique view of the inclination-oriented inner and outer diameter monopole ring magnetizer 10, and two magnetizing yokes 12a and 12b are installed to increase magnetization productivity. When the shortest distance between the two magnetizing yokes 12a and 12b is 4 to 5 times or more than the magnetizing thickness of the magnet, the coils wound around the magnetizing yokes 12a and 12b are electrically connected in series to each other. It is preferable to perform magnetization by generating magnetic flux. This is possible because the strength of the magnetic force is inversely proportional to the squared power, since the magnetic force of the magnetized part affects the size of the adjacent magnetized part more than 16 times.

Cross-sectional views of FIG. 5 are shown in FIGS. 8 and 9. 8 is a cross-sectional view AA of the installation portion of the magnetizing yoke 12a, the magnetizing yoke 12a is provided on the magnetizing body main body 19, and the ring magnet material 11 is placed on the magnetizing part of the magnetizing yoke 12a. Lies. Here, the shape of the magnetized core surface 15 in contact with the magnetizing object is preferably manufactured in a shape in which the core 13 and the magnetizing object 11 are in contact with each other.

Fig. 9 is a sectional view BB of the magnet material mounting portion, on which the supporter 18 for positioning the ring magnet material 11 is placed on the magnetizer body mechanism 19, on which the ring magnet material 11 is placed. Lies. Naturally, the supporter 18 may be combined with the magnetizing yoke 12a to form a single tool.

In addition, although only two magnetizing yokes 12a and 12b are shown in FIG. 5, the first embodiment of the present invention, the number of magnetizing yokes may be increased according to the size of the ring magnet material 11.

Next, with reference to Figures 5 to 9 will be described in the inclination-oriented inner and outer diameter monopole ring magnet rotation magnetizing method according to the present invention. First, the first step of placing the magnet material 11 on the supporter 18 to hold the position in the magnetizer 10, and the second step of magnetizing by flowing a strong magnetic flux to the ring magnet material 11, and The magnetizing device 10 comprises a third step of rotating the ring magnet material 11 by a predetermined angle (for example, the angle possible by one magnet), and the second step and the third step is a ring magnet The rotational intermittent magnetization method is performed repeatedly until the entire circumference of 360 degrees of the material 11 is magnetized.

 In the rotation intermittent magnetization method, the rotation operation as the third process is intermittent, but it is also possible to continuously magnetize while rotating (hereinafter, referred to as rotation continuous magnetization method). That is, when magnetizing the ring magnet material 11 every 10 degrees, for example, when a condenser type magnetizing power supply device having a charging time of approximately 4 seconds and a discharge time of 2 milliseconds is used, the ring is charged at 4 seconds of the charging time. The rotation speed may be set so that the angle at which the magnet material 11 rotates is 10 degrees. In this case, the angle at which the ring magnet material 11 rotates within the discharge time is 0.005 degrees. At this time, there is almost no change in the magnetic flux density of the magnetized portion due to the rotation within the discharge time. If the single magnetization angle is 10 degrees or more, continuous magnetization can be performed while rotating the ring magnet material 11.

Here, the direction of the representative magnetic force line magnetized to the magnet material 11 will be described with reference to FIG. 5, for example, the direction in which the magnetizing yoke 12a, 12b is placed becomes the representative magnetic force line direction, and the direction of the magnetized magnetic pole is the magnetizing coil ( It is determined by the direction of the current flowing in 14).

Since the ring magnet magnetized by the rotary magnetizing method of the present invention is magnetized at a predetermined angle, the angular uniformity of the representative lines of magnetic force throughout the ring is better as the magnetizing angle by the single magnet is smaller.

Next, the inclination-oriented up-down one-pole ring magnet magnetizer 20 according to the second embodiment of the present invention will be described with reference to FIGS. 10 to 13. 10 is an inclination-oriented up-down one-pole ring magnet magnetizer 20 according to a second embodiment of the present invention, and since the structure thereof is substantially the same as that of the first embodiment of the present invention, description thereof will be omitted and added and changed. The part will be described.

First, the magnetizing yoke was changed from left and right magnetizing yoke 12a, 12b to upper and lower magnetizing yoke 22a, 22b so that the magnetizing yoke is suitable for the upper and lower magnetization. The yoke supporter 22s was added, and the magnetizing yoke moving guide 27 was added to perform the first process of placing the ring magnet material 21 on the magnetizer. The magnetizing yoke 22a and 22b may be moved to the magnetizing position 27a and the product loading-unloading position 27b through the movement guide 27. The added magnetizing yoke movement guide 27 is necessary to perform the loading-unloading of the magnet material 21 when the magnetizing yoke is three or more. Of course, when there are two or less magnetizing yokes, the loading and unloading of the magnet material 21 can be performed from side to side, so that the magnetizing yoke movement guide 27 can be omitted.

FIG. 10 is a top view of the magnetizer 20 in which the magnetizing yokes 22a and 22b are in the magnetizing position 27a, FIG. 11 is a perspective view of the magnetizer 20 in this position, and FIG. 12 is a magnetizing yoke ( 22a) 22b is a top view of the magnetizer 20 in the magnet material loading-unloading position 27b.

 Since the magnetization method using the tilt-oriented up-down one-pole magnetizer, which is the second embodiment of the present invention, is made by the same method as the first embodiment described above, description thereof will be omitted.

Next, a method of producing an inclined oriented ring magnet using an anisotropic magnetic material will be described. Since the direction of the magnetic lines of the inclination-oriented ring magnet of the present invention is not simple, many alignment coils must be installed in the press mold. It is difficult to manufacture by the one-time molding method which carries out the self-orientation by performing the process. Accordingly, the anisotropic ring magnet material suitable for the present invention may be formed by pressing a portion 31 of the ring magnet in a specific magnetic field having an inclination angle as shown in FIG. 14, and the partial magnetic material 31 of the ring. ) Are arranged in a circumferential direction, assembled into a ring shape, and subjected to secondary molding by a press to produce an anisotropic ring magnetic material suitable for the present invention. Then, when the magnetization is carried out by the method proposed in the present invention, an anisotropic inclined ring magnet to be achieved by the present invention can be manufactured. In the anisotropic ring magnet, the molding equipment is described as a press, but it is obvious that injection molding is also possible.

On the other hand, the present invention is not limited to the exemplary embodiments described above, but can be practiced by changing, replacing, improving or adding within the scope not departing from the gist of the present invention. It will be easy to understand. If the implementation by such modifications, substitutions, improvements or additions fall within the scope of the appended claims, the technical spirit should also be regarded as belonging to the present invention.

As described above, according to the present invention, there is an effect of providing a ring magnet having a tilting angle (upper and lower poles, inner and outer diameter poles) and a manufacturing method thereof.

Claims (7)

In an inner and outer diameter monopolar ring magnet, the inner and outer diameter monopolar ring magnets have a constant inclination angle (TA) with a vertical line on the magnet surface, not perpendicular to the magnet surface, throughout the magnet. A top and bottom monopole ring magnet, comprising: a top and bottom monopole ring magnet having a constant inclination angle Ta with a vertical line on a magnet surface, not representative of the magnetic lines of force across the magnet; A ring magnet magnetizer comprising a magnetizing yoke having an inclination angle with respect to a magnet surface for implementing the first or second aspect of the present invention, comprising: a first step of placing a magnet material; A second step of magnetizing by flowing a strong magnetic flux to the magnet material; And a third step of rotating the ring magnet material by a predetermined angle, wherein the second step and the third step are repeated until the entire circumference of the magnet 360 degrees is magnetized. A ring magnet magnetizer comprising a magnetizing yoke having an inclination angle with respect to a magnet surface for implementing the first or second aspect of the present invention, comprising: a first step of placing a magnet material; The second process is continued until the magnet circulates 360 degrees of the entire circumference of the magnet material, including a second step of magnetizing by flowing a strong magnetic flux every time the magnet material is rotated by a predetermined angle while rotating the magnet material at a predetermined speed. Rotating continuous magnetizing method. Forming a partial magnetic material in a specific magnetic field having a constant inclination angle with respect to a ring magnet surface to implement the claim 1 or 2 as an anisotropic magnetic material; Assembling the partial magnets in a circumferential direction to assemble in a ring shape; And secondary molding the ring-shaped assembly. An upper and lower one-pole ring magnet magnetizer comprising: at least one magnetizing yoke having a tilting angle with respect to a magnet surface; An upper magnetizing coil and a lower magnetizing coil in the magnetizing yoke; A magnetizing core surface of the magnetizing part which is manufactured in contact with the magnet material in the magnetizing yoke; A rotating device for automatically or manually rotating the magnetic material; An inclination-oriented up-down one-pole ring magnet magnetizer employing a device consisting of a magnetizing yoke movement guide for loading and unloading magnetic materials and the magnetizing method according to claim 3 or 4. An inner and outer diameter monopolar ring magnet magnetizer comprising: at least one magnetizing yoke having a tilting angle with respect to a magnet surface; A magnetizing core surface of the magnetizing part which is manufactured in contact with the magnet material in the magnetizing yoke; A rotating device for automatically or manually rotating the magnetic material; An inclination-oriented inner and outer diameter single-pole ring magnet magnetizer employing a device consisting of a magnetic field conductor installed on an inner diameter side consisting of an electromagnet, a core or a permanent magnet, and the magnetizing method according to claim 3 or 4.

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