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KR960023879A - Magnetic Bearing and Manufacturing Method - Google Patents

Magnetic Bearing and Manufacturing Method Download PDF

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Publication number
KR960023879A
KR960023879A KR1019940033048A KR19940033048A KR960023879A KR 960023879 A KR960023879 A KR 960023879A KR 1019940033048 A KR1019940033048 A KR 1019940033048A KR 19940033048 A KR19940033048 A KR 19940033048A KR 960023879 A KR960023879 A KR 960023879A
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South Korea
Prior art keywords
core
sensor
sensing means
magnetic bearing
guard
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Application number
KR1019940033048A
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Korean (ko)
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KR0152975B1 (en
Inventor
한동철
장인배
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한동철
장인배
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Priority to KR1019940033048A priority Critical patent/KR0152975B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
    • F16C32/0406—Magnetic bearings
    • F16C32/044—Active magnetic bearings
    • F16C32/0444—Details of devices to control the actuation of the electromagnets
    • F16C32/0446—Determination of the actual position of the moving member, e.g. details of sensors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
    • F16C32/0406—Magnetic bearings
    • F16C32/044—Active magnetic bearings
    • F16C32/0444—Details of devices to control the actuation of the electromagnets
    • F16C32/0451—Details of controllers, i.e. the units determining the power to be supplied, e.g. comparing elements, feedback arrangements with P.I.D. control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
    • F16C32/0406—Magnetic bearings
    • F16C32/044—Active magnetic bearings
    • F16C32/0459—Details of the magnetic circuit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2220/00—Shaping
    • F16C2220/60—Shaping by removing material, e.g. machining
    • F16C2220/70—Shaping by removing material, e.g. machining by grinding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2223/00—Surface treatments; Hardening; Coating
    • F16C2223/30—Coating surfaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
    • F16C32/0406—Magnetic bearings
    • F16C32/044—Active magnetic bearings
    • F16C32/0474—Active magnetic bearings for rotary movement

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)

Abstract

본 발명은 자기베어링 및 그 제조방법을 개시한다.The present invention discloses a magnetic bearing and a method of manufacturing the same.

본 발명에 따른 자기베어링은 복수의 폴들이 방사상의 내측으로 돌출형성되도록 복수의 코어판이 적충된 코어와; 상기 폴들과 각각 결합하도록 코일이 권선되어 있는 복수의 마그네틱 코일체들과; 상기 코어의 상부 내측에 장착되는 캐패시턴스 센싱수단과; 상기 마그네틱 코일체들과 상기 센싱수단을 고정시키기 위하여 상기 코어와 상기 코일체들과 센싱수단을 몰딩시킨 플라스틱체로 이루어져 캐패시턴스 센서가 자기베어링에 가장 근접한 위치에 설치되도록 자기베어링에 내장됨으로써 변위 측정시 자장의 영향을 받지 않게 되므로 회전축의 표면 가공오파에 기인한 측정오차를 최소화시켜 안정적으로 회전축의 변위를 측정할 수 있으며, 또한 회전축의 진동특성을 개선할 수 있게 된다.The magnetic bearing according to the present invention includes a core loaded with a plurality of core plates such that the plurality of poles protrude radially inwardly; A plurality of magnetic coil bodies having coils wound around the poles, respectively; Capacitance sensing means mounted inside the upper portion of the core; The magnetic field is measured by displacement of the magnetic coil body and the plastic body formed by molding the core body and the sensing means to fix the sensing means. Since it is not affected by, it is possible to stably measure the displacement of the rotating shaft by minimizing the measurement error caused by the surface machining error of the rotating shaft, and also to improve the vibration characteristics of the rotating shaft.

Description

자기베어링 및 그 제조방법Magnetic Bearing and Manufacturing Method

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

Claims (9)

복수의 폴들이 방사상의 내측으로 돌출형성 되도록 복수의 코어판이 적충된 코어와; 상기 폴들과 각각 결합하도록 코일이 권선되어 있는 복수의 마그네틱 코일체들과; 상기 마그네틱 코일체들과 상기 센싱수단을 고정시키기 위하여 상기 코어와 상기 코일체들과 센싱수단을 몰딩시킨 플라스틱체로 이루어진 자기베어링.A core in which a plurality of core plates are stacked so that the plurality of poles protrude radially inwardly; A plurality of magnetic coil bodies having coils wound around the poles, respectively; Magnetic bearing made of a plastic body molded in the core, the coil body and the sensing means for fixing the magnetic coil body and the sensing means. 제1항에 있어서, 상기 센싱수단은, 90°의 각도로 분할되어 배치되어 있는 4개의 캐패시턴스 센서들로 이루어진 자기베어링.The magnetic bearing as claimed in claim 1, wherein the sensing means is composed of four capacitance sensors which are divided and disposed at an angle of 90 degrees. 제2항에 있어서, 상기 캐패시턴스 센서들의 각각은 중앙부에는 사각형의 센서판이 형성되어 있고, 상기 센서판과 소정의 공극을 두고 상기 센서판을 에워싸고 있는 가드판으로 된 자기베어링.The magnetic bearing according to claim 2, wherein each of the capacitance sensors has a rectangular sensor plate formed at a central portion thereof, and a guard plate surrounding the sensor plate with a predetermined gap with the sensor plate. 제3항에 있어서, 상기 센서판과 가드판에는 쉬일드되고 서로 반대방향으로 연속적으로 교차하도록 망사형으로 권선된 센서선과 가드선이 각각 배선되어 있는 자기베어링.4. The magnetic bearing according to claim 3, wherein the sensor plate and the guard plate are each wired with a sensor wire and a guard wire wound in a mesh shape so as to be shielded and continuously intersect in opposite directions. 제1항에 있어서, 상기 코어와 센싱수단 사이에는 전기적인 절연을 위하여 절연링이 개재되어 있는 자기베어링.The magnetic bearing of claim 1, wherein an insulation ring is interposed between the core and the sensing means for electrical insulation. 제1항 또는 제5항에 있어서, 상기 복수의 마그네틱 코일체들은 단일의 전력선에 의하여 전력이 공급되는 자기베어링.The magnetic bearing according to claim 1 or 5, wherein the plurality of magnetic coil bodies are powered by a single power line. 복수의 얇은 코어판이 적층된 코어의 복수의 폴들에 마그네틱 코일체들을 결합시켜 배선하는 단계와; 4개의 센서 및 가드판들이 서로 분할되도록 연결된 캐패시턴스 센싱수단을 상기 폴의 상측면에 전기적인 절연이 이루어지도록 접착시키는 단계와; 상기 코어와 캐패시턴스 센싱수단이 완전히 접착된 후에, 센서 및 가드판들에 센서 및 가드선들을 각각 배선하는 단계와; 상기 코어와 캐패시턴스 센서 조립체 사이의 공간을 액체형 플라스틱으로 몰딩하는 단계와; 몰딩된 액체형 플라스틱이 고형화된 후에, 선삭 및 연삭공정을 통하여 센서 및 가드판들이 서로 분리되도록 캐패시턴스 센서의 내경을 가공하는 단계로 이루어지는 자기베어링의 제조방법.Coupling and coupling magnetic coil bodies to a plurality of poles of a core in which a plurality of thin core plates are stacked; Bonding capacitance sensing means connected to the four sensors and the guard plates to be separated from each other so as to electrically insulate the upper side of the pole; After the core and the capacitance sensing means are completely bonded, wiring the sensor and the guard wires to the sensor and the guard plates, respectively; Molding a space between the core and the capacitance sensor assembly with liquid plastic; And after the molded liquid plastic is solidified, processing the inner diameter of the capacitance sensor such that the sensor and the guard plates are separated from each other through a turning and grinding process. 제7항에 있어서, 상기 액체형 플라스틱의 몰딩 단계에서는, 스데이터코어의 하부에 노출되는 마그네틱 코일체가 액체형 플라스틱에 의해 몰딩되도록 한 자기베어링의 제조방법.The method of claim 7, wherein in the molding of the liquid plastic, the magnetic coil body exposed to the lower portion of the sdata core is molded by the liquid plastic. 제7항에 있어서, 상기 캐패시턴스 센서의 내면을 가공하는 단계후에, 센서판들 및 가드판들의 표면을 에나멜로 코팅처리하는 단계가 더 포함되도록 하느 자기베어링의 제조방법.8. The method of claim 7, further comprising enameling the surfaces of the sensor plates and guard plates after processing the inner surface of the capacitance sensor. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940033048A 1994-12-07 1994-12-07 Magnetic bearing and manufacturing process Expired - Fee Related KR0152975B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940033048A KR0152975B1 (en) 1994-12-07 1994-12-07 Magnetic bearing and manufacturing process

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Application Number Priority Date Filing Date Title
KR1019940033048A KR0152975B1 (en) 1994-12-07 1994-12-07 Magnetic bearing and manufacturing process

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KR960023879A true KR960023879A (en) 1996-07-20
KR0152975B1 KR0152975B1 (en) 1998-12-01

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115735065A (en) * 2020-06-25 2023-03-03 崇实大学校产学协力团 Magnetic bearings with co-located eddy current displacement sensors

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107327485A (en) * 2017-08-29 2017-11-07 南京磁谷科技有限公司 A kind of monoblock type radial direction magnetic bearing magnetic pole of band every magnetic bridge

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115735065A (en) * 2020-06-25 2023-03-03 崇实大学校产学协力团 Magnetic bearings with co-located eddy current displacement sensors

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