KR20160149907A

KR20160149907A - Double magnetic chuck

Info

Publication number: KR20160149907A
Application number: KR1020150087732A
Authority: KR
Inventors: 김종진
Original assignee: 주식회사 에스엠씨 척3000
Priority date: 2015-06-19
Filing date: 2015-06-19
Publication date: 2016-12-28

Abstract

The present invention makes it possible to generate a magnetic force for self-fixing to the equipment table and a magnetic force for clamping a workpiece in both directions, and also the structure of the magnetic block is simple and the number of parts is reduced, And more particularly, to a double permanent electronic chuck capable of being quickly operated.
The present invention is characterized in that the magnetic induction units 110 and 210 are integrally arranged in a matrix form and have bobbin grooves 120 and 220 formed inside the magnetic induction units 110 and 210 to form a plurality of bolts B1 The upper body 100 and the lower body 200 of the double permanent electronic chuck C made of a metal material joined by fastening; An upper magnet band 300 and a lower magnet band 400 which are respectively fitted and fixed to the magnet grooves 111 and 211 formed inside the magnetic induction units 110 and 210 of the upper and lower bodies 100 and 200, ); And an upper bobbin 500 (500) having magnetizing coils 510 and 610 which are embedded in bobbin grooves 120 and 220 and are electrically connected to the electric connector E, respectively, disposed inside the magnetic induction units 110 and 210, And a lower bobbin 600; And an upper movable magnet 700 and a lower movable magnet 800 which are inserted and fixed in the upper and lower bobbins 500 and 600, respectively.

Description

Double permanent electronic chuck {DOUBLE MAGNETIC CHUCK}

The present invention relates to a permanent magnetic chuck in which permanent magnets and electromagnets are combined, and more particularly, to a magnetic chuck capable of generating a magnetic force for fixing itself to an equipment table and a magnetic force for clamping a workpiece in both directions, The present invention relates to a double permanent electronic chuck capable of easily and quickly performing machining and assembling of a magnetic block by simplifying the structure of the block and reducing the number of parts.

Generally, a chuck of a machine tool is attached to a table of a machine tool to fix the workpiece. Usually, a chuck, an air chuck, a collet chuck, etc. are mounted on a table using magnets, There is a magnetic chuck that can be machined.

Here, the magnetic chuck can easily attach the workpiece without using a separate member after power is applied. In recent years, a magnetic chuck having a combination of an Alnico magnet and a rare earth (neodymium and ferrite) magnet has been proposed. Since the chuck generates a considerably large magnetic force, the function of fixing the workpiece by the magnetic field is excellent.

As described above, the magnetic chuck is a clamping device for fixing an object to be processed of a magnetic body by a magnetic force by using a neodymium magnet, an alnico magnet, a magnetizing coil, etc. Such a magnetic chuck is called an 'electromagnet chuck' Electric permanent magnet chuck '.

The above-described conventional magnetic chuck will be described with reference to Figs. 1 and 2. Fig.

1 is a perspective view showing a conventional magnetic chuck. Referring to the drawings, a conventional magnetic chuck 10 includes a loading station 20 and a plurality of magnetic blocks 30 (or magnetic poles) arranged in a matrix form on a loading station 20. In addition, the magnetic chuck 10 may further include a support table 12 for rotatably supporting the loading station 20.

The loading station 20 includes a top surface 22 and a plurality of mounting portions 24 on which a plurality of magnetic blocks 30 are mounted are concavely arranged in a matrix form. An electrical connector (29) is provided on one side of the loading station (20).

The electric connector 29 is connected to a controller (not shown) for actuating the magnetic chuck 10. The electric connector 29 is used to induce magnetism of the plurality of magnetic blocks 30, Is applied to the magnetic chuck (10).

As shown in FIG. 2, the magnetic block 30 in which the magnetism is induced or induced by the current is released from the first permanent magnet portion 32, the magnetic induction portion 34, the second permanent magnet portion 34, (35), a bobbin (37) surrounding the second permanent magnet portion, and a magnetization coil (36) wound around the bobbin (37). At this time, the first permanent magnet portion 32 is provided with four magnet strips 60, 61, 62 and 63.

The first permanent magnet portion 32 is formed of a neodymium-iron-boron material. The second permanent magnet portion 35 is formed of an aluminum-nickel-cobalt material. .

The magnetizing coil 36 surrounds the second permanent magnet portion 35 and is electrically connected to the electrical connector 29 provided in the loading station 20. [ Each of the magnetizing coils 36 is connected in series to each other to be electrically connected to the electric connector 29 or a predetermined number of magnetizing coils 36 are connected in series to form a group, And may be electrically connected to the electrical connector 29.

Therefore, when a forward or reverse current flows through the magnetization coil 36, the second permanent magnet unit 35 is sensitive to the N pole or the S pole having different polarities, and further, the magnetism of the magnetic induction unit 34 Change.

Thereby, a magnetic field is formed or a magnetic field is not formed between the adjacent two magnetic induction portions 34. The magnetic block 30 having such a configuration is installed in the mounting portion 24 of the loading station 20 and fixed to the mounting portion 24 of the loading station 20 through the fixing means 38 (e.g., bolts).

The magnetic chuck 10 may further include an extension block (or an extension pole) 40 mounted on the upper portion of the magnetic block 30. Since the expansion block 40 is made of a ferromagnetic material, it is possible to maintain the same magnetism as that of the magnetic block 30 under the expansion block 40.

For example, the expansion block 40 disposed on the top of the magnetic block 30 magnetized to the N pole has an extension block 40 disposed on the top of the magnetic block 30 magnetized with the N pole and magnetized with the N pole, The magnetism of the S pole becomes magnetic.

At this time, the expansion block 40 is fastened to the upper surface of the magnetic induction portion 34 of the magnetic block 30 through the fastening bolt 42 passing therethrough. That is, the expansion block 40 is coupled to the magnetic block 30 in a bolted structure.

Such an expansion block 40 provides a predetermined gap between the workpiece and the magnetic block 30 so as to facilitate the machining operation. In particular, it is necessary for the penetration of holes, pockets, profiles, and the like with respect to the workpiece.

However, in the conventional magnetic chuck 10, the fastening means 38 sequentially penetrates the first permanent magnet portion 32 and the second permanent magnet portion 35 from the top of the magnetic induction portion 34, And is fixed to the mounting portion 24 of the loading station 20, so that it is difficult to process and assemble it.

That is, the magnetic induction unit 34, the first permanent magnet unit 32, and the second permanent magnet unit 35 are processed into predetermined shapes to install the magnetic chuck 10 in the loading station 20, The through holes 34a, 32a and 35a through which the means 38 penetrate must be processed separately.

At this time, the axes of the through holes 34a, 32a, and 35a formed in the magnetic induction portion 34, the first permanent magnet portion 32, and the second permanent magnet portion 35 may not coincide with each other, The first permanent magnet portion 32 and the second permanent magnet portion 35 are not accurately assembled when the magnets 34a, 34a, 32a and 35a are different from each other.

Since the through holes 34a, 32a and 35a must be machined in the magnetic induction portion 34, the first permanent magnet portion 32 and the second permanent magnet portion 35, The time is increased and the productivity of the magnetic chuck 10 is reduced.

In addition, since the magnetic induction portion 34 of the magnetic block 30 has been separately manufactured, the cost has been uneconomically increased. Further, the magnet blocks 60, 61, 62 and 63 of the magnetic block 30 are structurally, The bobbin 37 and the second permanent magnet 35 can not be stably maintained.

Meanwhile, since the magnetic chuck 10 can not be fixed to the equipment table in the related art, it is inconvenient to fix the magnetic chuck 10 to the equipment table by using a separate manual clamp or fixing bolt .

Patent Document: Korean Patent Publication No. 10-1030431 (Registered Date: Apr. 14, 2011)

It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art as described above, and it is an object of the present invention to provide an apparatus and a method for producing a magnetic force for self- The present invention provides a double permanent electronic chuck which can be easily fixed to the equipment table by its own magnetic force without using a manual clamp or a fixing bolt.

It is another object of the present invention to provide a double permanent electronic chuck capable of easily and quickly performing machining and assembly of a magnetic block by reducing the number of parts by allowing the magnetic block to have a simple structure.

It is still another object of the present invention to provide a double permanent electronic chuck capable of reducing the cost economically by integrally forming the magnetic induction portion of the magnetic block on the body.

It is still another object of the present invention to provide a double permanent electronic chuck capable of stably holding a magnetic band of a magnetic block, a bobbin, and a movable magnet.

In order to achieve the above object, the present invention provides a double permanently electromagnetically chucked metal chuck consisting of an upper body and a lower body integrally formed with a magnetic induction unit arranged in a matrix, wherein a bobbin groove is formed inside the magnetic induction unit, The upper and lower magnet bands are fixed to each other by a magnet groove formed on the inner side between the magnetic induction portions of the upper and lower bodies. And an upper bobbin and a lower bobbin are disposed in the bobbin groove and the upper and lower magnetic bobbins are fixed to the upper and lower bobbins, respectively.

Further, in the present invention, a bolt groove is formed at the center of the top surface of the magnetic induction portion of the upper body to fix the expansion block by bolt fastening.

In the present invention, the upper and lower bobbins and the upper and lower bobbin grooves of the upper body and the lower body are filled with an impregnating agent for fixing the same.

Further, in the present invention, the upper movable iron magnet and the lower movable iron magnet are respectively composed of left and right halves having fixing holes at the center, and the fixed holes of the upper movable magnet and the lower movable magnet are respectively filled with impregnation agents.

Further, in the present invention, the double permanent electronic chuck may be constituted by a chuck for a single-piece connector provided with an electrical connector on one side and a chuck for a two-piece connector provided with electrical connectors on both sides and fixed to both sides of the equipment table, The both ends of the workpiece are fixed to the chuck and the two-hole connector chuck, the one side electrical connector is connected by a cable, the other side electrical connector is connected to the controller, and the controller is connected to the remote controller.

According to the double permanent magnet chuck of the present invention, since a magnetic force for fixing itself to the equipment table is generated in the lower portion of the lower body and a magnetic force for clamping the workpiece is generated in the upper portion of the upper body, Can be easily fixed to the equipment table with its own magnetic force without using a manual clamp or a fixing bolt.

In addition, upper and lower magnet bands are fixed in the magnet groove of the upper and lower bodies, upper and lower bobbins and upper and lower magnetic bobbins are placed in the bobbin grooves of the upper and lower bodies and are integrally fixed by the impregnating agent Therefore, the upper and lower magnetic blocks structurally have a simple structure and the number of parts is reduced, so that the upper and lower magnetic blocks can be processed and assembled easily and quickly.

In addition, since the magnetic induction portions of the upper and lower magnetic blocks are integrally formed on the upper and lower bodies, the cost can be reduced economically.

In addition, since the impregnation agent is filled with the bobbin grooves of the upper and lower bodies, the upper and lower magnet bands, upper and lower bobbins, and upper and lower portions of the upper and lower magnetic blocks can stably hold the magnet.

1 is a perspective view showing a conventional magnetic chuck.
2 is a sectional view of Fig. 1;
3 is a perspective view of the present invention.
4 is a plan view of the present invention.
5 is a sectional view of the present invention.
6 is an exploded perspective view of the present invention.
7 is an enlarged cross-sectional view of the present invention.
8 is an exploded perspective view showing a state in which an expansion block according to the present invention is installed.
9 is a cross-sectional view showing the engaged state of Fig.
10 is a plan view showing an example of the use and installation state of the double permanent electronic chuck according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the technical structure of the present invention will be described in detail with reference to the accompanying drawings.

3 to 10, the double permanent magnet chuck according to the present invention includes the magnetic induction units 110 and 210 integrally arranged in the form of a matrix, and is formed integrally with the magnetic induction units 110 and 210 An upper body 100 and a lower body 200 of a double permanent magnet chuck C made of a metal material having bobbin grooves 120 and 220 coupled by bolts B1; An upper magnet band 300 and a lower magnet band 400 which are respectively fitted and fixed to the magnet grooves 111 and 211 formed inside the magnetic induction units 110 and 210 of the upper and lower bodies 100 and 200, ); And an upper bobbin 500 (500) having magnetizing coils 510 and 610 which are embedded in bobbin grooves 120 and 220 and are electrically connected to the electric connector E, respectively, disposed inside the magnetic induction units 110 and 210, And a lower bobbin 600; And an upper movable magnetic pole 700 and a lower movable magnetic pole 800 which are respectively inserted and fixed in the upper and lower bobbins 500 and 600. As shown in FIG.

The double permanent magnet chuck C according to the present invention is a combination of a permanent magnet and an electromagnet. The double permanent magnet chuck C includes an upper body 100, a lower body 200, an upper magnet body 300, The upper bobbin 500, the lower bobbin 600, the upper movable magnet 700, and the lower movable magnet 800.

The double permanent magnet chuck C according to the present invention includes upper and lower bodies 100 and 200 provided with an electrical connector E and an electric connector E arranged in a matrix form in the upper body 100 And an upper magnetic block M1 in which the induced magnetism is released by a current supplied through the electric connector E and a magnetic block M1 which is arranged in a matrix form in the lower body 200 and is magnetized by a current supplied through the electric connector E. And a lower magnetic block M2 whose induced or induced magnetism is released. At this time, the upper magnetic block M1 and the lower magnetic block M2 can be controlled.

According to the present invention, the upper magnetic block M1 includes a magnetic induction portion 110 arranged in a matrix form on the upper body 100, a magnet groove (not shown) formed between the magnetic induction portions 110 of the upper body 100 And a magnetizing coil 510 which is embedded in the bobbin groove 120 and is electrically connected to the electric connector E so as to be respectively disposed on the inner side of the magnetic induction unit 110, And an upper movable magnet 700 fixedly inserted in the upper bobbin 500. The upper movable bobbin 500 and the upper movable bobbin 500 are fixed to each other.

The lower magnetic block M2 includes a magnetic induction portion 210 arranged in a matrix form in a lower body 200 and a magnet groove formed in an inner side between the magnetic induction portions 210 of the lower body 200 And a magnetizing coil 610 which is embedded in the bobbin groove 220 and is electrically connected to the electric connector E so as to be respectively disposed on the inner side of the magnetic induction unit 210, And a lower movable magnet 800 inserted and fixed in the lower bobbin 600, respectively.

The upper body 100 constitutes an upper permanent magnetic chuck for fixing the workpiece S, and the upper body 100 is made of a metal material.

The lower body 200 constitutes a lower permanent magnetic chuck for self-fixing to the equipment table T, and the lower body 200 is made of a metal material. The upper body 100 and the lower body 200 are coupled by a plurality of bolts B1 and a sealing material P is provided between the upper body 100 and the lower body 200 to maintain airtightness. Respectively.

A plurality of magnetic induction parts 110 and 210 arranged in a matrix form are integrally formed on the upper part of the upper body 100 and the lower part of the lower body 200 respectively and the inner sides of the magnetic induction parts 110 and 210 Bobbin grooves 120 and 220 are formed in the upper and lower bodies 100 and 200. An electrical connector E is installed on one side or both sides of the upper and lower bodies 100 and 200. [

Since the magnetic induction units 110 and 210 are integrally formed on the upper and lower bodies 100 and 200, the magnetic force contact surfaces of the magnetic induction units 110 and 210 are all formed of metal. Since the magnetic induction units 110 and 210 are arranged in a matrix form, the magnetic induction units 110 and 210 are formed in the inner side of the magnetic induction units 110 and 210, 111) 211 are formed on the outer side of the magnetic induction units 110 and 210 and grooves 111a and 211a are formed on the outer side of the magnetic induction units 110 and 210, respectively.

The bobbin grooves 120 and 220 are formed inside the magnetic induction units 110 and 210. Upper and lower bobbins 500 and 600 are respectively installed in the bobbin grooves 120 and 220 .

The electrical connector E is installed on one side or both sides of the upper and lower bodies 100 and 200. The electrical connector E is electrically connected to the controller R so that the upper and lower magnetic blocks M1, The magnetism of the upper and lower magnetic blocks M1 and M2 is induced by individually interrupting the supply of current to the magnetizing coils 510 and 610 wound on the upper and lower bobbins 500 and 600 of the magnet M2, Respectively.

The upper and lower magnet strips 300 and 400 are fitted and fixed to the magnet grooves 111 and 211 formed inside the magnetic induction units 110 and 210 of the upper and lower bodies 100 and 200 The upper and lower magnet strips 300 and 400 magnetize the magnetic induction units 110 and 210, respectively. At this time, the upper and lower magnet strips 300 and 400 are made of Neodymium magnet or the like. Meanwhile, epoxy resin may be injected into the magnet grooves 111 and 211 to fix the upper and lower magnet strips 300 and 400.

The upper and lower magnet strips 300 and 400 are sandwiched by four magnet slots 111 and 211 formed on the inner sides of the magnetic induction units 110 and 210 and the magnetic induction units 110 and 210, Are magnetized by the four upper and lower magnet strips 300 and 400, respectively.

The upper and lower bobbins 500 and 600 are respectively incorporated into bobbin grooves 120 and 220 to be respectively disposed inside the magnetic induction units 110 and 210. The upper and lower bobbins 500 and 600 The magnetization coils 510 and 610 electrically connected to the electrical connector E are respectively wound.

The upper and lower bobbins 500 and 600 are hollow hollow bodies and the upper and lower magnetic poles 700 and 800 are respectively incorporated in the upper and lower bobbins 500 and 600. The magnetization coils 510 and 610 are provided with electrical connectors E), respectively.

The upper and lower movable magnetic poles 700 and 800 are inserted and fixed in the upper and lower bobbins 500 and 600. The upper and lower movable magnetic poles 700 and 800 are magnetically coupled to the magnetizing coil 510, When the current is supplied to the magnet 610, the magnetic forces of the magnetometers 700 and 800 are increased. Accordingly, when a current is supplied to the magnetizing coil 510 of the upper bobbin 500, the range of the magnetic field is increased to the upper portion of the magnetic induction unit 110 located at the upper portion of the magnet 700, The magnetic induction unit 210 having the lower part disposed below the magnet 800 moves when the current is supplied to the magnetization coil 610 of the lower bobbin 600. [ So that the lower body 200 is attached to the upper part of the equipment table T made of a metal material. At this time, the upper and lower movable magnetic poles 700 and 800 are made of an alnico magnet or the like.

8 and 9, bolt grooves 112 for fixing the expansion block 900 with the bolts B2 are formed at the center of the upper surface of the magnetic induction portion 110 of the upper body 100, Respectively. Since the bolt groove 112 is formed at the center of the upper surface of the magnetic induction unit 110 and the bolt B2 penetrating the expansion block 900 is fastened to the bolt groove 112, The expansion block 900 can be installed on the upper part of the housing.

The extension block 900 is installed on the upper part of the magnetic induction part 110 when a through hole such as a hole, a pocket, a profile or the like is required for the work, and the extension block 900 is installed on the upper part of the magnetic induction part 110 A predetermined gap can be formed between the workpiece and the magnetic induction portion 110.

A bolt groove 212 corresponding to the bolt groove 112 of the upper body 100 may be formed at the center of the bottom of the magnetic induction unit 210 of the lower body 200.

7, impregnants 130 and 230 are filled in the bobbin grooves 120 and 220 of the upper body 100 and the lower body 200, respectively, as shown in FIG. At this time, nameplates N1 and N2 are installed on the lower part of the upper body 100 and the upper part of the lower body 200, respectively.

6, the upper movable magnetic pole 700 and the lower movable magnetic pole 800 are respectively formed with left and right halves formed with fixing holes 710 and 810 in the center, Impregnating agents 130 and 230 are respectively charged in the fixed holes 710 and 810 of the moving magnet 700 and the lower movable magnet 800.

The impregnants 130 and 230 fix the upper and lower bobbins 500 and 600 and the upper and lower movable magnets 700 and 800 so as not to move and the impregnants 130 and 230 And protects and insulates the magnetization coils 510 and 610 wound on the upper and lower bobbins 500 and 600, respectively.

The impregnants 130 and 230 are formed by mixing the epoxy and the hardener so that the upper and lower bobbins 500 and 600 are inserted into the bobbin grooves 120 and 220 of the upper and lower bodies 100 and 200, The impregnating agents 130 and 230 are injected into the bobbin grooves 120 and 220 to be hardened so that the impregnating agents 130 and 230 are installed in the bobbin grooves 120 and 220 of the upper and lower bodies 100 and 200, Upper and lower bobbins 500 and 600 and upper and lower bobbins 700 and 800 can be firmly supported. The impregnants 130 and 230 are inserted into the bobbin grooves 120 of the upper and lower bodies 100 and 200 so that the upper and lower bobbins 500 and 600 are completely immersed in the impregnants 130 and 230. [ The upper and lower bobbins 500 and 600 and the magnetizing coils 510 and 6120 and the upper and lower movable magnets 700 and 800 are hardened with impregnants 130 and 230, It will be completely wrapped.

10 shows an example of the use and installation state of the double permanent electronic chuck C according to the present invention. The double permanent electronic chuck C has a single- And a two-hole connector chuck C2 provided with electrical connectors E on both sides thereof and fixed to both sides of the equipment table T respectively. The chuck C1 and the two- The workpiece S is fixed at its both ends with a cable K and the controller R is connected to the other electrical connector E, The controller R is connected to the remote controller Rl. In this case, since the magnetic force of the upper body 100 and the magnetic force of the lower body 200 are separately operated, the lower body 200 is fixed to the equipment table T only by the magnetic force, The magnetic force can be released and the remote controller R 1 connected to the controller R can be conveniently controlled with the double permanent magnet chuck C installed as shown in FIG.

Although FIG. 10 shows a state in which two double permanent electron chucks C are provided as an example of the present invention, it is clear that another double permanent electron chuck C may be provided in another example of the present invention.

Accordingly, the present invention generates magnetic force for fixing itself to the equipment table T from the lower part of the lower body 200, and applies a magnetic force for clamping the work S to the upper part of the upper body 100 Unlike the prior art, there is an advantage that it can be conveniently fixed to the equipment table T with its own magnetic force without using a separate manual clamp or fixing bolt.

The upper and lower magnet bodies 300 and 400 are fixed to the magnet grooves 111 and 211 of the upper and lower bodies 100 and 200, The upper and lower bobbins 500 and 600 and the upper and lower movable magnets 700 and 800 are placed in the bobbin grooves 120 and 220 of the bobbin 200 by the impregnants 130 and 230 The lower and upper magnetic blocks M1 and M2 structurally have a simple structure and the number of parts is reduced so that the upper and lower magnetic blocks M1 and M2 can be processed and assembled easily and quickly There is an advantage.

Since the magnetic induction units 110 and 210 of the upper and lower magnetic blocks M1 and M2 are integrally formed on the upper and lower bodies 100 and 200 respectively, There are advantages to be able to.

Since the impregnating agents 130 and 230 are respectively filled into the bobbin grooves 120 and 220 of the upper and lower bodies 100 and 200 in the present invention, The upper and lower magnet bands 300 and 400 and the upper and lower bobbins 500 and 600 and the upper and lower portions of the upper and lower magnet bobbins 700 and 800 can be stably maintained.

100: upper body 110: magnetic induction part
111: magnet groove 112: bolt groove
120: bobbin groove 130: impregnating agent
200: lower body 210: magnetic induction part
211: magnet groove 220: bobbin groove
230: impregnation Article 300: upper magnet strip
400: lower magnet band 500: upper bobbin
510: Magnetizing coil 600: Lower bobbin
610: magnetizing coil 700:
710: Fixing hole 800:
810: Fixing hole 900: Expansion block
C: Double permanent electronic chuck C1: Chuck for single hole connector
C2: Two-hole connector Chuck E: Electrical connector
T: Equipment table S: Working material
K: Cable R: Controller
R1: Remote control

Claims

The magnetic induction units 110 and 210 are integrally formed in a matrix and have bobbin grooves 120 and 220 formed in the inner side of the magnetic induction units 110 and 210 to form a plurality of bolts B1, An upper body 100 and a lower body 200 of a double permanent electronic chuck C made of a metal material to be coupled;
An upper magnet band 300 and a lower magnet band 400 which are respectively fitted and fixed to the magnet grooves 111 and 211 formed inside the magnetic induction units 110 and 210 of the upper and lower bodies 100 and 200, );
And an upper bobbin 500 (500) having magnetizing coils 510 and 610 which are embedded in bobbin grooves 120 and 220 and are electrically connected to the electric connector E, respectively, disposed inside the magnetic induction units 110 and 210, And a lower bobbin 600;
And an upper movable magnet (700) and a lower movable magnet (800) inserted and fixed in the upper and lower bobbins (500, 600), respectively.

The double permanent magnet according to claim 1, wherein a bolt groove (112) for fixing the expansion block (900) by a bolt (B2) is formed at the center of the upper surface of the magnetic induction part (110) of the upper body chuck.

The double permanent magnet chuck according to claim 1, wherein the bobbin grooves (120) and (220) of the upper body (100) and the lower body (200) are filled with impregnating agents (130) and (230), respectively.

The upper movable magnetic pole 700 and the lower movable magnetic pole 800 are formed with left and right halves in which fixing holes 710 and 810 are formed at the center of the upper movable magnetic pole 700 and the lower movable magnetic pole 800, And the impregnating agents (130) and (230) are filled in the fixing holes (710) and (810) of the magnet (800).

The double permanent magnet chuck (C) according to claim 1, wherein the double permanent electromagnet chuck (C) comprises a chuck (C1) for a single connector having an electric connector (E) installed on one side and a chuck C2 And both ends of the workpiece S are respectively fixed to the first connector chuck C1 and the second connector chuck C2, Wherein the controller E is connected to a cable K and the controller E is connected to a controller R and the controller R is connected to a remote controller R1.