WO2020055127A1 - Mandrin magnétique à aimant permanent incorporé - Google Patents

Mandrin magnétique à aimant permanent incorporé Download PDF

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Publication number
WO2020055127A1
WO2020055127A1 PCT/KR2019/011767 KR2019011767W WO2020055127A1 WO 2020055127 A1 WO2020055127 A1 WO 2020055127A1 KR 2019011767 W KR2019011767 W KR 2019011767W WO 2020055127 A1 WO2020055127 A1 WO 2020055127A1
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WO
WIPO (PCT)
Prior art keywords
conductor
magnetic
magnetic chuck
permanent magnet
workpiece
Prior art date
Application number
PCT/KR2019/011767
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English (en)
Korean (ko)
Inventor
이용구
Original Assignee
주식회사 진영마그네틱 리서치
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Publication of WO2020055127A1 publication Critical patent/WO2020055127A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/20—Electromagnets; Actuators including electromagnets without armatures
    • H01F7/206—Electromagnets for lifting, handling or transporting of magnetic pieces or material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/15—Devices for holding work using magnetic or electric force acting directly on the work
    • B23Q3/154—Stationary devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/15—Devices for holding work using magnetic or electric force acting directly on the work
    • B23Q3/154—Stationary devices
    • B23Q3/1546—Stationary devices using permanent magnets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/20—Electromagnets; Actuators including electromagnets without armatures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/20—Electromagnets; Actuators including electromagnets without armatures
    • H01F7/206—Electromagnets for lifting, handling or transporting of magnetic pieces or material
    • H01F2007/208—Electromagnets for lifting, handling or transporting of magnetic pieces or material combined with permanent magnets

Definitions

  • the present invention relates to a magnetic chuck that supports the target workpiece, such as milling or grinding, in more detail, and in more detail, it is possible to change the posture of the workpiece in various ways according to the table structure, processing shape, processing method, etc. It is related to a magnetic chuck that can further strengthen the magnetic force and greatly reduce the manufacturing process and cost through simplification of the structure.
  • General processing equipment such as grinding machines, general-purpose milling, CNC machining centers, upright balls, radial balls, etc., require a jig to support the workpiece in a specified position so that it is precisely machined.
  • the jig is largely classified into a fixed type of a structure arranged to protrude at a specified position on a table of processing equipment, and a movable type that allows an operator to adjust the position of the jig as needed.
  • the movable jig is a type jig detachable from the table using a fastening means such as bolting, and a type jig detachable from the table using an electromagnetic force generated according to on / off control of electric application (hereinafter referred to as a 'magnetic chuck'). ).
  • Patent Document 1 a conventional magnetic chuck, such as Patent Document 1, which will be described later, has been developed.
  • the conventional magnetic chuck 200 of Patent Document 1 comprises an AlNiCo magnet 224 as a magnetizable core, and after sufficient electricity is applied, it is magnetically adsorbed to the work piece seated on the lower plate 202 even after a power failure. The magnetic force to fix the position was maintained.
  • the conventional magnetic chuck 200 as shown in FIGS. 21A to 21C, angle processing of the workpiece was possible by forming predetermined grooves in the main body 210 and the lower plate 202, as well as a circular rod-shaped workpiece. .
  • an AlNiCo magnet 224 corresponding to the magnetizable core is installed, and the insulating conductive coil 222 is wound in the transverse direction around the AlNiCo magnet 224, to the extent The width of the front and rear became wider, and the size of the magnetic chuck 200 was increased and the weight was also increased.
  • the structure of the above-described conventional magnetic chuck 200 has a lower height compared to the front-rear width, the stability of vertical machining for a high-height workpiece is deteriorated.
  • the conventional magnetic chuck 200 is an Alnico magnet 224 ) Around the asymmetric structure.
  • This asymmetrical structure of the conventional magnetic chuck 200 complicated the forming frame structure for filling the liquid resin or epoxy granite for filling the insulating means 220, and also made the inflow process of the insulating means 220 difficult. Of course, this problem has caused the production cost of the magnetic chuck 200 to be increased and the production efficiency is also inhibited.
  • the conventional magnetic chuck 200 should constitute a lower plate 202 on which both the workpiece and the magnetic chuck 200 can be placed, and the lower plate 202 must be fastened with a bolt and a lower end of the Alnico magnet 224. .
  • the lower plate 202 since the lower plate 202 has to have a plate shape wider than the front and rear widths of the magnetic chuck 200 (refer to FIG. 1, reference marks) so that the workpiece can be put together, the number of constituent elements of the conventional magnetic chuck 200 is large and structured. It was also complicated.
  • the lower plate 202 has to have a large area according to the size of the workpiece, thereby increasing the weight of the magnetic chuck and the manufacturing cost.
  • the conventional magnetic chuck 200 is fixed directly to the table of the processing equipment by the magnetic force generated immediately upon application of current to the insulating conductive coil 222, so while applying the current to the conductive coil 222, the conventional magnetic chuck ( 200) was impossible to move. Therefore, the operator must apply the current to the conductive coil 222 only after first placing the position of the magnetic chuck 200 on the table at the designated position, so the worker has to be troublesome and inconvenient to work.
  • the conventional magnetic chuck 200 has a complicated manufacturing process of the magnetic chuck 2000 itself, and the assembly production cost is also high, which has been the cause of increasing the processing, assembly, and man-hours of the machined parts.
  • the conventional magnetic chuck 200 composed of the Alnico magnet 224 as a core was forced to fix the workpiece depending only on the generated magnetic force of the Alnico magnet 224. Therefore, in the case of processing a workpiece with processing equipment that applies a force greater than the magnetic force, there was an unreasonable need for a separate fixing means in addition to the conventional magnetic chuck 200.
  • the size of the fixing means when the size of the workpiece is relatively smaller than that of the conventional magnetic chuck 200, the size of the fixing means must be prepared and prepared according to the size of the workpiece so that the additional fixing means does not interfere with the processing equipment.
  • the conventional magnetic chuck 200 is limited to the specifications of the Alnico magnet 224 used as the core, the generated magnetic force of the conventional magnetic chuck 200 has to be constant at all times. That is, the conventional magnetic chuck 200 could not adjust the magnetic force in accordance with the output of the processing equipment used for processing the workpiece and the size and weight of the workpiece.
  • the conventional magnetic chuck 200 was unreasonable to apply and consume unnecessary electric power to the conventional magnetic chuck 200 in order to generate magnetic force in a machining operation sufficient to fix the work piece with only a small magnetic force.
  • the present invention was invented to solve the above problem, and it is possible to generate a larger magnetic force only by applying the same size of current without changing the specification of the Alnico magnet composed of a magnetizable core, thereby providing a stronger fixing force.
  • the problem to be solved is to provide a magnetic chuck with a built-in permanent magnet that can fix the workpiece.
  • Another challenge to be solved is to provide a magnetic chuck with a built-in permanent magnet that can maximize and stably process a workpiece wider than the width between the N and S poles of the magnetic.
  • Another problem to be solved is to provide a magnetic chuck with a built-in permanent magnet capable of moving a magnetic chuck in a state in which electricity is applied to the workpiece by placing a workpiece having a large or heavy weight in a predetermined position on a table in advance.
  • Another problem to be solved is to provide a magnetic chuck with a built-in permanent magnet, which increases the stability against vertical machining of a high-height workpiece.
  • One or a plurality of permanent magnets arranged side by side with the magnetizable core
  • a first conductor connected to each end of the magnetizable core and the permanent magnet
  • a second conductor disposed to face the first conductor in parallel and connected to each other end of the magnetizable core and the permanent magnet;
  • An insulator that blocks a magnetic path by wrapping a magnetizable core, a conductive coil, and a permanent magnet between the first and second conductors;
  • the magnetic force of a permanent magnet or a permanent magnet and an alico magnet can be selected and used according to a workpiece to be fixed and its weight, a magnetic force adjustment effect can also be expected.
  • the manufacturing process and cost can be drastically reduced, and the magnetic adsorption and fixation of the workpiece for work can be done anywhere on the front, back, and both sides, if it is above or below. It has the effect of maximizing the benefits of the jacket.
  • the magnetic core and the permanent magnet of the magnetic chuck form a transverse structure between the first conductor and the second conductor, the conductive coil surrounding the magnetizable core is disposed in the longitudinal direction, thereby reducing the width of the front and rear of the magnetic chuck.
  • a large workpiece or a workpiece with heavy weight that is larger than the width between the poles of a large size or a magnetic chuck is placed in advance on the table, and the magnetic chuck is moved to the workpiece even when electricity is applied to move the workpiece, the magnetic chuck, and the table to magnetic force. There is an effect of fixing by adhesion.
  • the height of the magnetic chuck is increased, and there is an effect of increasing the stability for vertical processing of the workpiece.
  • FIG. 1 is a perspective view showing a first embodiment of a magnetic chuck according to the present invention
  • Figure 2 is a cross-sectional view of the magnetic chuck shown in Figure 1
  • Figure 3 is a cross-sectional view of another embodiment of the magnetic chuck according to the present invention.
  • Figure 4 is a cross-sectional view sequentially showing the magnetic absorption process of the driving form and the workpiece of the first embodiment
  • Figure 5 is a cross-sectional view showing another state of use of the first embodiment for the workpiece
  • Figure 6 is a cross-sectional view showing another use of the first embodiment of the workpiece
  • Figure 7 is a cross-sectional view showing another embodiment of the magnetic chuck shown in Figure 6,
  • FIG. 8 is a cross-sectional view showing a second embodiment of the magnetic chuck according to the present invention.
  • FIG. 9 is a cross-sectional view showing a third embodiment in which the arrangement posture of the magnetic chuck according to the present invention is changed.
  • FIG. 11 is a cross-sectional view showing a fourth embodiment of the magnetic chuck according to the present invention.
  • FIG. 12 is a perspective view showing a three-dimensional appearance of a magnetic chuck according to the present invention.
  • FIG. 13 is an exploded perspective view showing a state of installation of the stand on the magnetic chuck shown in FIG. 12,
  • FIG. 14 is an exploded perspective view showing a state of installation of the support to the magnetic chuck shown in FIG. 12,
  • 15 is a perspective view showing a fixed state of the workpiece on the magnetic chuck on which the pedestal and the support are installed,
  • FIG. 16 is a perspective view showing an embodiment of a flange configured with a magnetic chuck according to the present invention
  • FIG. 17 is a sectional view showing a jig installation shown in FIG. 16 and a plan view of a view of FIG. 16 (c);
  • FIG. 19 is a sectional view showing a fifth embodiment of the magnetic chuck according to the present invention.
  • 21 is a perspective view showing another embodiment of the fifth embodiment
  • FIG. 22 is a cross-sectional view showing a fastening structure of a conductor and a subject using a jig-shaped bolt.
  • FIG. 1 is a perspective view showing a first embodiment of a magnetic chuck according to the present invention
  • FIG. 2 is a cross-sectional view of the magnetic chuck shown in FIG. 1
  • FIG. 3 is a cross-sectional view of another embodiment of the magnetic chuck according to the present invention.
  • the magnetic chuck 10 of this embodiment includes a magnetizable core 11, a conductive coil 15 surrounding the circumference of the magnetizable core 11, and one or more permanent magnets arranged in parallel with the magnetizable core 11 (11a, 11b), a magnetized core 11 and a permanent magnet (11a, 11b), one end of each and a bolt, welding, rivets, a first conductor coupled via a fixing means (not shown) such as resin bonding as a medium (12; ⁇ ⁇ ), the first conductor 12 and the second conductor coupled to the other end of each of the magnetizable core 11 and the permanent magnets 11a, 11b and the fixing means so as to face side by side. (14), between the first conductor 12 and the second conductor 14, the magnetization core 11, the conductive coil 15, and the permanent magnets 11a, 11b are wrapped around the magnetic path. And an insulating insulator (16).
  • the magnetic chuck 10 includes a first conductor 12 according to a position where the work piece W is to be disposed, a structure of the magnetic chuck 10 and a table T on which the work piece W is arranged, and the like.
  • the second conductor 14 may be erected in the longitudinal direction or may be arranged in the transverse direction.
  • the magnetic chuck 10 of FIG. 2 shows a state in which the first conductor 12 and the second conductor 14 are erected in the longitudinal direction, and the magnetic chuck 10 according to the present invention is subjected to the corresponding implementation.
  • the voids G are formed so as not to contact the table T.
  • the magnetizable core 11 may be a general magnetizable material or an Alnico material so that a magnetic field is induced by a current applied to the conductive coil 15.
  • the permanent magnets 11a and 11b are arranged side by side with the magnetizable core 11, and the N-pole and the S-pole are arranged so that the magnetic path is formed in a direction parallel to the magnetic path formed by the magnets of the magnetizable core 11. Therefore, the N poles of the permanent magnets 11a and 11b are connected in contact with the first conductor 12 or the second conductor 14, and the S pole is connected in contact with the remaining one conductor.
  • the permanent magnets 11a and 11b preferably have sufficient magnetic force to fix the workpiece W
  • the permanent magnets 11a and 11b of the present embodiment are made of neodymium NS having excellent magnetic force.
  • the permanent magnets 11a and 11b according to the present invention are not limited to neodymium materials, and various materials such as samarium cobalt and ferrite may be applied.
  • the first conductor 12 and the second conductor 14 are made of a magnetic material, and both ends of the magnetizable core 11 and bolts, welding, rivets, and resin are adhered so as to face each other around the magnetizable core 11 It is arranged side by side by fastening each through a fixing means such as a back. At least one selected from the first conductor 12 and the second conductor 14 disposed in this way is in contact with the workpiece W or the table T as shown in FIG. 1, and the workpiece W, which is a function of the magnetic chuck 10, In order to attach and fix the first conductor 12 and the second conductor 14 are arranged to stand upright on the table T. Therefore, the magnetizable cores 11 at which both ends are coupled to the first and second conductors 12 and 14, respectively, form a transverse structure parallel to the table T (see FIG. 2).
  • the first conductor 12 forms an air gap G at one end so as not to contact the table T, and the second conductor 14 has a table T ). Therefore, even when electricity is applied to the conductive coil 15, a magnetic path cannot be formed between the magnetic chuck 10 itself and the table T. As a result, the magnetic chuck 10 can move freely without being fixed by the table T and magnetic force. It is possible.
  • the conductive coil 15 wraps around the magnetizable core 11 and constitutes a wire or connector (not shown) drawn for current application.
  • a current is applied to the conductive coil 15, a magnetic field is induced around the magnetizable core 11, and through this, a magnetic field is conducted in the first conductor 12 and the second conductor 14. That is, the magnetizable core 11 forms a magnetic path in the first conductor 12 and the second conductor 14 through magnetic field induction.
  • the permanent magnets 11a and 11b of the present embodiment are disposed outside the conductive coil 15, but may be disposed in the conductive coil 15.
  • the insulator 16 wraps the magnetizable core 11, the conductive coil 15, and the permanent magnets 11a and 11b between the first conductor 12 and the second conductor 14 to insulate the magnetic path. Therefore, the magnetizable core 11 of this embodiment, the conductive coil 15, and the permanent magnets 11a and 11b are not exposed to the outside. As a result, the magnetic chuck 10 of the present embodiment has a first conductor 12 and a second conductor 14 of a square, the magnetizable core 11, the conductive coil 15, and the permanent magnets 11a, 1b. Wrapping and facing each other, forming the front and rear surfaces, the insulator 16 is filled between the first conductor 12 and the second conductor 14, so that the magnetic chuck 10 of the present embodiment has a hexahedral shape.
  • the insulating material such as resin forming the insulator 16
  • the insulating material is the first conductor.
  • the pores (G) formed in (12) are introduced and filled. Through this, the magnetic path is blocked between the first conductor 12 and the table T, and thus magnetically insulated.
  • the magnetic chuck 10 of the present embodiment is inserted into the gap (G) and further comprises a non-conductive body 13 to reinforce the insulation for blocking the magnetic path.
  • the non-conductive subject 13 of this embodiment is coupled to one end of the first conductor 12 in order to block the magnetic path.
  • the non-porous body 13 is made of a non-porcelain material, and blocks magnetic paths formed in the first porcelain 12 from being transferred to the table T.
  • the non-conductive body 13 is assumed to be fitted only to the gap G formed in the first or second conductor 12 or 14, but as shown in FIG. 3 (a), the non-conductive body ( 13 ') may be in the form of closing one surface of the insulator 16. In this case, the non-conductive subject 13 'is fixed such that the outer surfaces thereof contact the first conductor 12 and the second conductor 14, respectively.
  • FIG. 4 is a cross-sectional view sequentially showing a driving shape of the first embodiment and a magnetic adsorption process of the workpiece.
  • the magnetic chuck 10 of the present embodiment is coupled so that the first conductor 12 and the second conductor 14 face each other at both ends of the magnetizable core 11 disposed in the transverse direction.
  • both ends of the pair of permanent magnets 11a and 11b arranged in the transverse direction parallel to the magnetizable core 11 are coupled to the first conductor 12 and the second conductor 14, respectively. Therefore, the first conductor 12 and the second conductor 14 can achieve a posture standing on the table T as shown.
  • the permanent magnets 11a and 11b form a magnetic path on the magnetic chuck 10 regardless of whether or not electricity is applied, the workpiece W in contact with the magnetic chuck 10 can be used only by the magnetic force of the permanent magnets 11a and 11b. It can be adhered to the magnetic chuck 10.
  • the magnetic force induced in the magnetizable core 11 through the application of electricity to the conductive coil 15 is the first conductor 12 and the second conductor.
  • the ceramics 14 are connected to each other with magnetic paths, and the magnetic path of the second ceramic body 14 leads to the table T.
  • the magnetic force of the magnetic core 11 induced by the magnetic core 11 is the first ceramic body. It is impossible to form a magnetic path in a virtuous cycle through the sieve 12, the table T, and the second conductor 14. Therefore, although electricity is applied to the conductive coil 15, the magnetic chuck 10 is not magnetically adsorbed to the table T, and as shown in FIG. 4 (a), the operator chucks the magnetic chuck from the table T. 10) can be moved.
  • the workpiece W having a large size or heavy weight is placed in advance on the table T, and the magnetic chuck 10 in a state in which electricity is applied can be moved according to the workpiece.
  • the magnetic force of the magnetizable core 11 is the first conductor ( 12), a workpiece (W), a table (T), and a second conductor (14) in order to form a magnetic path in a virtuous cycle.
  • the magnetic chuck 10 and the workpiece W and the table T magnetically adsorb each other by magnetic force, and the magnetic chuck 10 as well as the workpiece W are fixed to the positions of the table T.
  • the operator can perform a machining operation such as grinding, milling, cutting, etc. on the workpiece (W).
  • the magnetic force of the permanent magnets 11a and 11b forms a magnetic path of a virtuous cycle in the same direction along with the magnetic force of the magnetizable core 11, and through this, the workpiece W can be fixed with a stronger magnetic force.
  • the workpiece W can be fixed with a stronger magnetic force.
  • the direction of the magnetic path of the magnetizable core 11 shown in FIG. 4 (a) and the direction of the magnetic path of the magnetizable core 11 shown in FIG. 4 (b) are opposite to each other. This is because the direction of the current applied to the conductive coil 15 is adjusted by the operator as necessary, and the direction of the magnetic field of the magnetizable core 11 is adjusted. This adjustment is to use the magnetic chuck 10 more efficiently by offsetting or adding magnetic paths generated by the magnetizable core 11 and the permanent magnets 11a and 11b to each other as necessary.
  • FIG. 5 is a cross-sectional view showing another usage of the first embodiment of the workpiece
  • FIG. 6 is a cross-sectional view showing another usage of the first embodiment of the workpiece
  • FIG. 7 is a magnetic shown in FIG. 6 It is a cross-sectional view showing another embodiment of the chuck.
  • the magnetic chuck 10 of this embodiment can be attached to the workpiece W to be in contact with the upper ends of the first conductor 12 and the second conductor 14, as shown in FIG. 5 (a).
  • the induced magnetic force of the magnetizable core 11 and the magnetic force of the permanent magnets 11a and 11b are the first conductor 12, the workpiece W, and the second conductor ( 14) and a magnetizable core 11 to form a magnetic path in a virtuous cycle. Therefore, the workpiece W is magnetically adsorbed to the upper surface of the magnetic chuck 10 by the generated magnetic force of the magnetic chuck 10.
  • the magnetic chuck 10 of the present embodiment constitutes a ceramic reference base 10a for holding a reference position of the workpiece W.
  • the ceramic reference base 10a functions as a support so that the workpiece W can be accurately positioned at a reference position on the upper surface of the magnetic chuck 10, and the operator can use the first conductor 12 or the second as necessary.
  • the ceramic reference base 10a is detachably installed with the first and second ceramic bodies 12 and 14.
  • the ceramic reference base 10a was installed to protrude upward from the side surface of the first ceramic body 12. Through this, as shown in the drawing (b) of FIG. 5, the work piece W is aligned with the point where the stopper S is located on the upper surface of the magnetic chuck 10 and is accurately positioned at the reference position.
  • the first conductor 12 and the second conductor 14 and the table T are blocked by the magnetic path of the non-conductive subject 13, the induced magnetic force of the magnetizable core 11 and the permanent magnet 11a,
  • the magnetic chuck 10 does not apply magnetic force to the table T because the magnetic force of 11b) does not form a magnetic path that circulates along the first conductor 12, the table T, and the second conductor 14 can not do it. Therefore, the operator can move the magnetic chuck 10 on the table T, so that the position of the magnetic chuck 10 magnetically adsorbing the workpiece W can be moved to a designated position.
  • the stopper (S) configured to protrude on the table (T) is capable of bonding to the first conductor 12, the induced magnetic force and the permanent force of the magnetizable core 11 are permanent.
  • the magnetic force of the magnets 11a and 11b forms a magnetic path in a virtuous cycle that leads to the first conductor 12, the stopper S, the table T, the second conductor 14, and the magnetizable core 11 in this order. Is done. Therefore, the generated magnetic force of the magnetic chuck 10 is also applied to the table T, so that the magnetic chuck 10 is magnetically fixed to the corresponding position of the table T.
  • the magnetic chuck 10 of this embodiment is installed so that the reference base (10a ') is capable of ceramic between the first conductor 12 and the second conductor (14). Accordingly, when the workpiece W and the stopper S contact the first conductor 12 and the second conductor 14, respectively, as shown in FIG. 6 (a), the magnetic chuck 10 is a permanent magnet 11a. , 11b) magnetically adsorbed to the workpiece W and the stopper S by the magnetic force of 11b).
  • the permanent magnets 11a and 11b are sufficient to fix the workpiece W, it is not necessary to apply an electric current to the conductive coil 15 unnecessarily, but the permanent magnet 11a is fixed in the workpiece W. , If only the magnetic force of 11b) is not sufficient, the operator can increase the adsorption force to the workpiece W by induction magnetic force by applying a current to the conductive coil 15 as shown in FIG. 6 (b).
  • the magnetic chuck 10 of FIG. 6 is permanent unless the first conductor 12 or the second conductor 14 contacts the stopper S or the workpiece W in contact with the table T Since the magnetic force of the magnets 11a and 11b does not form a magnetic path circulating by the non-conductive body 13, the operator can freely move on the table T.
  • non-conductive bodies 13 are formed at both ends of the first conductor 12, respectively, and one end of each of the magnetizable core 11 and the permanent magnets 11a and 11b.
  • the connected first conductor 12 forms a state in which the magnetic path is completely blocked.
  • the magnetizable core 11 when the workpiece W is in direct contact with the base 10a 'and the first conductor 12 to magnetically connect the base 10a' and the first conductor 12, the magnetizable core 11 ) And the magnetic path formed by the permanent magnet 11b forms a closed circulation form through the reference base 10a 'and the workpiece W.
  • the workpiece W can be adhered more firmly to the magnetic chuck 10 and the table T with sufficient fixing force for processing.
  • FIG. 8 is a cross-sectional view showing a second embodiment of the magnetic chuck according to the present invention.
  • the magnetic chuck 10 of this embodiment has flanges 19 and 19 'on one or more of the first conductor 12 or the second conductor 14 so that the magnetic chuck 10 can be fixed to the table. Is formed.
  • the flanges 19 and 19 ' may be formed in various forms depending on the fastening position of the magnetic chuck 10 with respect to the table T, and the flange 19 may have a second conductor (as shown in FIG. 8 (a)). 14) and 'L' may be formed to be bent, as shown in Figure 8 (b), the flange 19 'may be formed to extend in the longitudinal direction of the second conductor (14).
  • the flanges 19 and 19 'of the illustrated shape are formed to be bent or extended in the longitudinal direction from the second conductor 14, but the shape and shape may be various.
  • the conductors on which the flanges 19 and 19 'are configured are the second conductors 14 that are not connected to the non-conductive subject 13, but the first conductors to which the non-conductive subject 13 is connected (12) may also be formed (see FIG. 11).
  • the flanges 19 and 19 ' are fastened to the table T via fastening means B such as bolts, so that the bracket function for fixing the magnetic chuck 10 to one point of the table T To perform.
  • the flanges 19 and 19 'and the table T can be fastened by various methods, such as welding or bonding, in addition to the general fastening means (B).
  • FIG. 9 is a cross-sectional view showing a third embodiment in which the arrangement posture of the magnetic chuck according to the present invention is changed, and FIG. 10 is a cross-sectional view showing another usage of the third embodiment.
  • the magnetic chuck 10 of the present embodiment is such that the first conductor 12 and the second conductor 14 are disposed in the horizontal direction on the table T, and the magnetic chuck 10 shown in FIG. 6 is a table. The position was changed by lying on (T).
  • FIG. 9 is finished so that a pair of non-conductive objects 13 'and 13 "are disposed at both ends of the first conductor 12, so that the workpiece W in contact with the table T is a magnetic chuck 10 ), The operator can freely move the magnetic chuck 10 from the table T.
  • the reference base (10a ') in contact with the second conductor 14 is configured to contact the table (T), as shown in Figure 9, the magnetic path of the virtuous cycle by the magnetic force of the permanent magnet (11a, 11b) is a reference Magnetic chuck 10 is magnetically adsorbed to table T while passing through stand 10a '. Therefore, it is preferable that the reference stand 10a 'is detachably installed with the second conductor 14.
  • the magnetic chuck 10 of FIG. 10 is disposed on the table T by inverting the magnetic chuck 10 of FIG. 9, and a pair of reference bases are respectively provided at both ends of the second conductor 14 in contact with the table T. (10a ', 10a ") is installed. Therefore, the placement position of the magnetic chuck 10 is a non-conductive subject, unless the workpiece W is seated on the top surface where the non-conductive subject 13', 13" is exposed.
  • the magnetic force of the permanent magnets 11a and 11b by (13 ', 13 ") also does not form a virtuous path, so the operator can freely move the magnetic chuck 10 from the table T.
  • the magnetic force of the permanent magnets 11a and 11b as well as the induced magnetic force of the magnetizable core 11 is passed through the workpiece W.
  • the magnetic chuck 10 is magnetically adsorbed to the table T, and the workpiece W is also magnetically adsorbed to the magnetic chuck 10.
  • the magnetic chuck 10 of the present embodiment may be physically fixed to the table T via an anchor A that is fixed to the table T through the magnetizable core 11, but is limited to this. It is not done.
  • FIG. 11 is a cross-sectional view showing a fourth embodiment of the magnetic chuck according to the present invention.
  • the magnetic chuck 10 of the present embodiment further includes a support 17 having an upper end connected to the flange 19 and a lower end seated on the table T so as to support and support the flange 19.
  • the flange 19 is seated on the table (T) as shown in FIG. 8, and the bracket function fixed by the fastening means (B), as well as a larger workpiece (W) relatively wide compared to the magnetic chuck 10 as shown in FIG. It also functions as a stand to support the.
  • the flange 19 is formed at the other end of the first conductor 12, so that the flange 19 is located on the top of the magnetic chuck 10.
  • the area of the upper surface of the magnetic chuck 10 is expanded, so that the workpiece W seated on the upper surface of the magnetic chuck 10 can be stably fixed.
  • the upper portion of the magnetic chuck 10 has a relatively wide upper light lower than the lower portion of the magnetic chuck 10.
  • the magnetic chuck 10 of this structure is biased to the portion where the flange 19 is located, so that the magnetic chuck 10 itself can be tilted without maintaining a stable posture on the table T.
  • the pressure applied to the workpiece (W) is very large and the magnitude of the applied pressure is also fluid, which causes severe vibration in the magnetic chuck (10), and in this process the workpiece (W ) It is also severely shaken by machining vibrations, which prevents precise machining.
  • the magnetic chuck 10 of the present embodiment further includes a support 17 that is inserted so that the upper end is coupled to the flange 19 and the lower end is seated on the table T, so that the flange 19 is stably supported. Be supported.
  • the support 17 supports the flange 19 as shown in FIG. 11 to prevent the tilting of the magnetic chuck 10, even if the workpiece W is placed on the upper surface of the magnetic chuck 10 including the flange 19, the first By supporting the extension portion 19 of the ceramic body 12 firmly, the magnetic chuck 10 itself maintains its position without tilting during processing, and even severe vibrations that may occur during processing can be prevented.
  • the support 17 is detachably coupled to the flange 19 via a fastening means (B1) such as a bolt or a pin, the support 17 is flanged (19) according to the arrangement posture of the magnetic chuck 10. ).
  • the magnetic chuck 10 to which the support 17 is combined is blocked by the magnetic force induced by the electric current applied to the conductive coil 15 and the magnetic force of the permanent magnets 11a and 11b, respectively, and blocked from the table T
  • the support 17 is made of a non-porous material.
  • the magnetic chuck 10 having a structure in which the non-conductive subject 13 and the flange 19 are configured in the first conductor 12 and the support 17 made of a non-conductive material supports the flange 19 as in the present embodiment.
  • a stopper (S '; see FIG. 21) of a ceramic material is disposed on the table T so that the second conductor 14 and the workpiece W are attached. After all, the induced magnetic force of the magnetizable core 11 and the magnetic force of the permanent magnets 11a and 11b are the second conductor 14, the stopper S ', the workpiece W, the flange 19, and the first conductor.
  • FIG. 12 is a perspective view showing a three-dimensional view of the magnetic chuck according to the present invention
  • FIG. 13 is an exploded perspective view showing the installation of the pedestal to the magnetic chuck shown in FIG. 12
  • FIG. 14 is a magnetic chuck shown in FIG. 12 It is an exploded perspective view showing the installation state of the support
  • FIG. 15 is a perspective view showing a state of fixing the workpiece to the magnetic chuck where the support and the support are installed.
  • the magnetic chuck 10 of this embodiment forms the structure of the above-described cross-sectional shape, forms a polyhedron shape so as to be able to fix the workpiece W with different arrangement positions as necessary.
  • the V1 direction and the V2 direction form the shape of the magnetic chuck 10 shown in FIG. 4, and the V3 direction in FIG. 12 (c) is 8
  • Each of the magnetic chuck 10 shown in FIG. 11 forms a shape. Therefore, the magnetic chuck 10 itself can perform the above-described workpiece (W) fixing function.
  • the magnetic chuck 10 shown in FIGS. 12 (a) and (b) and (c) are different from each other in different positions, and the first conductor 12 has at least two non-conductive sides.
  • the structure insulated by the subject 13 is achieved.
  • the non-conductive body 13 may be integral with the insulator 16 that insulates between the first and second conductors 12 and 14.
  • the second conductor 14 is formed with a flange 19 on one side. Since the function of the flange 19 has been described above with reference to FIG. 11, further description of the flange 19 is omitted here.
  • the magnetic chuck 10 forming the above-described structure may perform a fixing function for the workpiece W by adding the pedestal 20 and the support 30.
  • the pedestal 20 shown in FIG. 13 is coupled to contact the planes of FIGS. 12A and 12B.
  • the magnetic chuck 10 is seated on the base 20 so that a portion is exposed to form the chin portion 21.
  • the first conductor 12 is seated with a magnetic chuck 10 so as to be insulated from the support 20 by a non-conductive subject 13, through which the magnetic conductor between the first conductor 12 and the support 20 Is blocked.
  • the magnetic chuck 10 is mounted on the pedestal 20, and the support 30 is connected to the first conductor 12 as shown in FIG. 14. At this time, the support 30 is spaced apart so as not to come into contact with the pedestal 20, thereby blocking the magnetic path between the pedestal 20 and the support 30. In this coupling structure, since the first conductor 12 is blocked from the second conductor 14 and the magnetic path, the support 30 does not receive a sufficient magnetic force for self-fixing and is separated from the first conductor 12 do. Therefore, the support 30 is connected to the first conductor 12 through a separate fastening means (B).
  • the pedestal 20 and the support 30 can maintain a strong coupling state with each other through magnetic force.
  • the generated magnetic force of the magnetic chuck 10 is distributed for fixing the pedestal 20, the magnetic force applied to the workpiece W can be relatively reduced.
  • the support 30 when the support 30 is coupled with the first conductor 12 of the magnetic chuck 10, a portion protrudes to form the chin portion 31.
  • the protruding jaw portion 31 is in contact with one side of the workpiece W as shown in FIG. 15, and the workpiece W is accurately fixed to the magnetic chuck 10 based on the jaw portion 31.
  • the workpiece W is disposed to be in contact with the support 30 and the second conductor 14, respectively, so that the first conductor 12, the support 30, the workpiece W, and the second conductor A magnetic path leading to (14) is formed, through which the workpiece (W) is firmly coupled with the magnetic force of the magnetic chuck (10).
  • the coupling shape between the magnetic chuck 10 and the base 20 and the support 30 of the present embodiment described above is only one example, and the base 20 and the support 30 according to the shape and processing posture of the workpiece W ) Can be fixed to the magnetic chuck 10 by combining one or more selected ones.
  • the withdrawal code '10b' is a 'connector' for applying a current to the conductive coil 15, and is a mechanism for electrically connecting the coil 15 and an external wire.
  • FIG. 16 is a perspective view showing an embodiment of a flange configured with a magnetic chuck according to the present invention
  • FIG. 17 is a sectional view showing an installation state of the jig shown in FIG. 16 and a plan view of FIG. 16 (c) It is a drawing shown.
  • the magnetic chuck 10 of this embodiment as shown in Fig. 16 (a), the through-hole 19a into which the fastening means B1 for detachment with the support 17 is fitted, as well as on the flange 19 At least one nut hole 19b for inserting and removing a jig (J) for floatingly supporting the seated workpiece (W) is formed.
  • a relatively large workpiece W may be seated on the flange 19 compared to the magnetic chuck 10, but a plurality of small workpieces W may be seated as illustrated in FIG. 16B. have.
  • a number of small workpieces (W) can be arranged at regular intervals, and the jig (J) is connected to the flange (19) to hold the precise distance.
  • the flange 19 constitutes a plurality of nut holes 19b into which the jig J is fitted, and the plurality of nut holes 19b are formed to be arranged at specified intervals.
  • the nut hole (19b) configured in the flange 19 may have a variety of intervals, therefore, the operator inserts and fixes the jig (J) at the required position, and the workpiece (W) in accordance with the jig (J) It can rest on the flange 19.
  • the workpiece (W) may be pushed under a strong pressure in the course of the machining operation, so that it is held in multiple directions and supported, a hook (not shown) may be formed on the flange (19).
  • the nut holes 19b of the flange 19 may be arranged to form one row at regular intervals, but in addition, a plurality of nut holes form one row, but the rows of the nut holes are different for each row. You can also achieve Therefore, according to the size of the workpiece (W) or the operator's needs, the jig (J) can be arranged at different intervals and positions and the workpiece (W) can be processed.
  • the magnetic chuck 10 of this embodiment forms a nut hole 14b corresponding to the nut hole 19b on the upper surface of the second conductor 14, and a jig J fixed to the flange 19
  • a jig (J ') for supporting the workpiece (W) is additionally configured. Therefore, the workpiece (W) is a jig (J ') installed on the second conductor 14 together with the jig (J) installed on the flange (19) to hold the left side of the workpiece (W), respectively, and supports the workpiece (W) can be supported more stably and placed.
  • the jig (J, J ') of the present embodiment is a bolt type that can be detachably fixed by being fitted to the nut holes 14b and 19b, while the head is capable of supporting the workpiece W on the left side, a magnetic chuck If it protrudes on the surface of (10), it is possible without limitation in its shape.
  • the preferred jig (J, J') of the present embodiment is provided with a threaded portion J1 as shown in FIG. 17 (a). It is composed of a tapered portion (J2) and a head portion (J3).
  • the nut holes 14b and 19b also constitute a threaded portion that is screwed with the threaded portion J1 and a tapered portion that contacts the tapered portion J2. Therefore, when the threaded portion J1 of the jig J, J 'is engaged and fixed to the threaded portion of the nut hole 14b, 19b, the tapered portion J2 of the jig J, J' is the nut hole 14b, 19b ), And the head portion J3 of the jig J, J 'protrudes on the surface of the magnetic chuck 10.
  • this structure allows the tapered portion to maintain its position while limiting the left and right shaking of the jig (J, J '), it corresponds to the pressing force applied by the cutter (C) in multiple directions during processing as shown in FIG. 17 (b). By doing so, it is possible to prevent the workpiece W from shaking.
  • the magnetic chuck 10 of the present embodiment as shown in Figure 16 (c), the magnetic chuck 10 on the upper surface of the workpiece (W) to support the magnetic reference base (10a) further Make up. Therefore, a plurality of workpieces (W) can be accurately arranged side by side at regular intervals and positions on the upper surface of the magnetic chuck 10, and by the magnetic path passing through the magnetic reference base 10a in the second conductor 14 The workpiece W can be fixed with a strong magnetic force.
  • FIG. 18 is a cross-sectional view showing another embodiment of the fourth embodiment.
  • the magnetic chuck 10 of this embodiment is paired at both ends of the first conductor 12.
  • Non-conductive objects 13 ', 13 "of are installed. Therefore, if the article made of a magnetic material in contact with the table T does not contact the first conductor 12, the magnetic force of the permanent magnets 11a, 11b Since it does not form a magnetic path in a virtuous cycle, it can be moved on the table T. Of course, even if the second conductor 14 contacts the stopper S ', the magnetic flux in a virtuous cycle is not formed, so it is magnetic. Mobility of the chuck 10 is ensured.
  • the magnetic force of the permanent magnets 11a and 11b is a virtuous cycle type via the flange 19'. Is formed, it is magnetically adsorbed to the table T.
  • the magnetic chuck 10 is magnetically adsorbed to the stopper S' to maintain the current arrangement.
  • the workpiece W is seated on the upper surfaces of the magnetic chuck 10 and the flange 19 ', the induced magnetic force and the magnetic force of the permanent magnets 11a and 11b pass through the flange 19' and the workpiece W.
  • the workpiece W is magnetically adsorbed to the magnetic chuck 10.
  • FIG. 19 is a cross-sectional view showing a fifth embodiment of a magnetic chuck according to the present invention
  • FIG. 20 is a cross-sectional view showing another embodiment of the fifth embodiment of a workpiece.
  • the magnetic chuck 10 of the present embodiment is a non-conductive subject coupled to one end of the first conductor 12 or one end of the second conductor 14, as shown in FIGS. 19A and 19B.
  • a non-conductive subject 13' or a ceramic subject 18 is coupled to the other end of the remaining conductor.
  • one end of the first conductor 12 is closed by a non-conductive subject 13 ', and the other end of the second conductor 14 is connected to the magnetic subject 18.
  • the non-conductive subject 13 ' can contact the table T according to the placement posture of the magnetic chuck 10.
  • one end of the first conductor 12 is closed by a non-conductive subject 13 ', and the other end of the second conductor 14 is also a non-conductive subject 13'. ).
  • the non-conductive subject 13 ' which has finished the other end of the second conductor 14, blocks the magnetic path with the workpiece W. Therefore, by connecting the magnetic reference base 10a to the second conductor 14, the magnetic reference base 10a forms a magnetic path between the workpiece W and the second conductor 14, so that the workpiece W with strong magnetic force ), As well as a reference position function for the processing of the workpiece (W).
  • the non-conductive subject 13' and the magnetic subject 18 are respectively the first conductor 12 and It should be detachably coupled with the second conductor 14.
  • the subject bodies 13 'and 18 of the present embodiment are detached from the first and second conductors 12 and 14 via fastening means B3 such as bolts.
  • At least one of the first conductor 12 or the second conductor 14 is formed with nut-type fixing holes 12a, 14a.
  • These fixing holes 12a and 14a are formed at positions communicating with the through holes S1 formed in the magnetic chuck 10, as shown in FIG. 20 (b). Therefore, when the magnetic chuck 10 is magnetically adsorbed to the stopper S ', the through hole S1 and the fixing hole 14a are bound through the fastening means B2 as a medium, so that the magnetic chuck 10 has its own magnetic force. In addition, the magnetic chuck 10 is fixed to the stopper S '.
  • the fixing holes 12a, 14a form a nut type
  • the fastening means B2 is preferably a bolt corresponding thereto, but is not limited thereto. .
  • FIG. 21 is a perspective view showing another embodiment of the fifth embodiment
  • FIG. 22 is a cross-sectional view showing a fastening structure of a conductor and a subject using a jig-shaped bolt.
  • first jig hole 13a is fastened only to the non-conductive subject 13 'without being directly coupled to the first and second conductors 12 and 14 as shown in FIG. 22 (a), so that the workpiece W is Support to keep it in place.
  • the second jig hole 13b is formed to penetrate up and down as shown in FIG. 22 (b), so that the jig J 'is directly coupled to the first and second conductors 12 and 14.
  • the lower end of the second jig hole 13b, 13b ' is formed with a narrow diameter of the hole so that the tapered portion J2 of the jig J' is applied, and the non-conductive subject 13 'is interposed through the jig J'.
  • the first and second conductors 12 and 14 are fastened to each other.
  • the second jig hole 13b is constituted only at both ends of the non-conductive body 13 ', and the first jig hole 13a is constituted at the center of the non-conductive body 13', but its position is carried out. It is not limited to the example.
  • the jig J ' is not limited to being coupled only to the non-conductive body 13', and the threaded portion J1 of the jig J 'is the first and second conductor ( 12, 14), in addition to the function of the supporting means of the jig J ', it is also possible to have the function of a fastening means for fastening the non-magnetic subject 13' and the first and second conductors 12, 14 to each other. have.
  • the jig (J ') is preferably a material having insulating properties to the magnetic path.
  • jig (J ') is illustrated as a means for fastening between the subject and the conductor
  • a fastening means such as a wrench bolt may be applied as the fastening means between the subject and the conductor.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Jigs For Machine Tools (AREA)

Abstract

La présente invention concerne un mandrin magnétique qui supporte, en le maintenant immobile, un objet à traiter au moyen d'un fraisage, d'un meulage, etc., et plus précisément un mandrin magnétique qui peut modifier de diverses façons la position de l'objet à traiter en fonction de la structure d'une table, d'une forme de traitement, d'un procédé de traitement, etc., renforcer encore une force magnétique grâce à la présence d'un puissant aimant permanent incorporé à l'intérieur du mandrin, et réduire considérablement le traitement et les coûts de fabrication au moyen d'une simplification structurale, le mandrin comprenant : une bobine conductrice qui entoure un noyau magnétique et la circonférence du noyau magnétique ; un ou plusieurs aimants permanents disposés côte à côte avec le noyau magnétique ; un premier conducteur magnétique relié à des premières extrémités du noyau magnétique et de l'aimant permanent ; un second conducteur magnétique disposé pour faire face au premier conducteur magnétique en position côte à côte et relié aux autres extrémités du noyau magnétique et de l'aimant permanent ; et un corps isolant pour rompre un circuit magnétique en entourant le noyau magnétique, la bobine conductrice et l'aimant permanent entre le premier conducteur magnétique et le second conducteur magnétique.
PCT/KR2019/011767 2018-09-10 2019-09-10 Mandrin magnétique à aimant permanent incorporé WO2020055127A1 (fr)

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KR1020180107571A KR102162878B1 (ko) 2018-09-10 2018-09-10 영구자석 내장형 마그네틱 척

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KR101130218B1 (ko) * 2011-05-20 2012-03-26 최태광 영구자석과 전자석을 결합한 자성체 홀딩장치
KR101192395B1 (ko) * 2011-04-21 2012-10-18 주식회사진영정기 마그네틱 척
KR20120119412A (ko) * 2011-04-21 2012-10-31 최태광 영구자석 워크홀딩 장치
KR20130108868A (ko) * 2012-03-26 2013-10-07 주식회사진영정기 마그네틱 척

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KR100583995B1 (ko) * 2004-07-09 2006-05-26 재단법인 포항산업과학연구원 스틸하우스용 헤더 및 보 조립 작업대
JP6112714B2 (ja) * 2013-04-12 2017-04-12 日特エンジニアリング株式会社 コイル製造装置

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KR100601284B1 (ko) * 2005-01-20 2006-07-13 이용구 마그네틱 척
KR101192395B1 (ko) * 2011-04-21 2012-10-18 주식회사진영정기 마그네틱 척
KR20120119412A (ko) * 2011-04-21 2012-10-31 최태광 영구자석 워크홀딩 장치
KR101130218B1 (ko) * 2011-05-20 2012-03-26 최태광 영구자석과 전자석을 결합한 자성체 홀딩장치
KR20130108868A (ko) * 2012-03-26 2013-10-07 주식회사진영정기 마그네틱 척

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