WO2019034187A1 - Dispositif de protection de parties d'un système d'un rotor de filage comprenant un palier magnétique - Google Patents

Dispositif de protection de parties d'un système d'un rotor de filage comprenant un palier magnétique Download PDF

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Publication number
WO2019034187A1
WO2019034187A1 PCT/CZ2018/050042 CZ2018050042W WO2019034187A1 WO 2019034187 A1 WO2019034187 A1 WO 2019034187A1 CZ 2018050042 W CZ2018050042 W CZ 2018050042W WO 2019034187 A1 WO2019034187 A1 WO 2019034187A1
Authority
WO
WIPO (PCT)
Prior art keywords
ring
shaft
safety ring
holder
safety
Prior art date
Application number
PCT/CZ2018/050042
Other languages
English (en)
Inventor
Vladimir Kluson
Jan Richter
Original Assignee
Rieter Cz S.R.O.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rieter Cz S.R.O. filed Critical Rieter Cz S.R.O.
Publication of WO2019034187A1 publication Critical patent/WO2019034187A1/fr

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/04—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques imparting twist by contact of fibres with a running surface
    • D01H4/08—Rotor spinning, i.e. the running surface being provided by a rotor
    • D01H4/12—Rotor bearings; Arrangements for driving or stopping
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/04—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques imparting twist by contact of fibres with a running surface
    • D01H4/08—Rotor spinning, i.e. the running surface being provided by a rotor
    • 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
    • F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
    • F16C27/02—Sliding-contact bearings
    • 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
    • F16C32/0442—Active magnetic bearings with devices affected by abnormal, undesired or non-standard conditions such as shock-load, power outage, start-up or touchdown
    • 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
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/02—Sliding-contact bearings for exclusively rotary movement for radial load only
    • 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
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/10—Sliding-contact bearings for exclusively rotary movement for both radial and axial load
    • 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
    • F16C2340/00—Apparatus for treating textiles
    • F16C2340/18—Apparatus for spinning or twisting
    • 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/043—Sliding surface consisting mainly of ceramics, cermets or hard carbon, e.g. diamond like carbon [DLC]

Definitions

  • the invention relates to a device for protecting parts of a system of a spinning rotor with a magnetic bearing by preventing contact between a shaft of the spinning rotor and parts of the magnetic bearing or a drive mechanism in the event of loss of the shaft levitation and/or in the event of excessive lateral deflection of the shaft from the axis of the magnetic bearing, comprising at least two safety rings mounted in holders arranged in the front and rear parts of the shaft, through which the shaft passes in the levitation state without contact with them.
  • the magnetic bearing stops keeping the shaft in the axis of the system and it is necessary to make sure that the shaft does not come into contact with parts of the magnetic bearing or parts of the drive and does not damage those parts or itself.
  • two safety rings are used through which the shaft passes in the front and rear parts.
  • the rear safety ring is provided with a bottom to withstand the axial forces when the shaft is moved backwards upon loss of levitation.
  • a magnetic bearing for mounting a shaft of a spinning rotor is disclosed, for example, in DE 100 22 736 A1 or DE 198 27 606 A1, in which are shown two annular-shaped safety rings which are pressed into holders in the front and rear parts of the shaft, whereby the shaft passes through the safety rings and, when deflected out of the working position, for example, in the event of vibration at a critical frequency, a failure or power cut, the safety rings withstand the forces from the rotating shaft until the shaft stops.
  • the magnetic bearing area is closed close from both sides by holders with safety rings.
  • the disadvantage of these safety rings is the fact that they are fixedly mounted to the holder because the entire safety ring holder must be dismounted in case of need for any intervention on the inside of the magnetic bearing and when the safety ring is damaged or worn out, it is necessary to replace the entire safety ring holder.
  • the safety ring is rigid and, in the event of the shaft impact, it must withstand all the forces, and so in most cases the safety ring and/or its mounting in the holder is damaged and the safety ring must be replaced together with the respective holder.
  • the front safety ring When replacing the shaft, the front safety ring or when cleaning the workspace, the front safety ring located together with the holder immediately behind the rotor cup must be temporarily removed and after performing the particular operation, the front safety ring must be mounted again precisely coaxially with the system components.
  • the aim of the invention is to simplify and reduce the costs of the mounting and dismounting of the safety ring and the holder without having to re- center them to accommodate the shaft. In addition, it is the aim of the invention to maximize the service life of the safety ring.
  • the goal of the invention is achieved by a device for protecting parts of a system of a spinning rotor with a magnetic bearing by preventing contact between a shaft of the spinning rotor and parts of the magnetic bearing or a drive mechanism in the event of loss of the shaft levitation and/or in the event of excessive lateral deflection of the shaft from the axis of the magnetic bearing, comprising at least two safety rings mounted in the holders arranged in the front and rear parts of the shaft, through which the shaft in the levitation state passes without contact with them, whereby the principle of the invention consists in that at least the front safety ring is mounted detachably in the holder, preferably by a bayonet connection, or is attached by means of a clip or threaded coupling.
  • the detachable mounting significantly facilitates the mounting and dismounting of the ring without having to dismount the holders in which they are mounted.
  • the bayonet connection consists of an opening with shaped recesses in the holder for the passage of a bayonet cap of the safety ring.
  • Formed on the inner side of the holder are bayonet recesses extending in the direction of rotation of the shaft away from the shaped recesses and terminating in stops to receive in case of need bayonet protrusions of the bayonet cap of the safety ring.
  • the safety ring is rotated only in some cases of the shaft impact on the safety ring after loss of levitation, and therefore the final position of the safety ring mounted in the holder is defined by the stops.
  • the depth of the bayonet recesses decreases in the direction of the shaft rotation and therefore the clamping force between the bottom of the recess and the bearing surface of the bayonet protrusions and the bearing surface of the head of the safety ring increases due to the rotation of the safety ring in the direction of the shaft rotation.
  • At least the inner part of the safety ring is formed by a ceramic ring.
  • the advantage of the ceramic ring is high mechanical strength, which is important because very high energy is dissipated during the impact. Another advantage is excellent wear resistance, which also increases the service life of the ring.
  • the ceramic material allows to choose a suitable surface roughness, whereby a relatively rough surface greater than Ra .6 is preferred for the given application, and/or the inner surface of the opening in the ceramic ring is preferably provided with at least one groove extending from one face to the other, which prevents "the backup wheel effect", that is to say, the effect of reversing the shaft rotation after the impact on the ring, which may damage the safety ring the most.
  • Another advantageous property of the ceramic material is high fracture toughness, which also increases the service life of the ring.
  • the ceramic ring can be accommodated in a dampening ring made of a material more elastic than that of the ceramic ring, which above all reduces the risk of brittle fracture of the ceramic ring.
  • FIG. 1a is an axonometric view and sectional view of a front safety ring detachably mounted in a holder by means of a bayonet connection
  • Fig. 1b is an axonometric view and sectional view of a rear safety ring detachably mounted in the holder by a bayonet connection
  • Fig. 2 is a view of a shaft of the spinning rotor with safety rings mounted in the holders
  • Fig. 3 shows a safety ring with a bayonet connection and a spacing member
  • Fig. 4a shows a front safety ring with a ceramic ring and a damping ring
  • Fig. 1a is an axonometric view and sectional view of a front safety ring detachably mounted in a holder by means of a bayonet connection
  • Fig. 1b is an axonometric view and sectional view of a rear safety ring detachably mounted in the holder by a bayonet connection
  • FIG. 4b shows a rear safety ring with a ceramic ring and a damping ring
  • Fig. 5a is a view of a holder with a detachable safety ring
  • Fig. 5b is a cross-section of the holder and the safety ring of Fig. 5a
  • Fig. 5a Fig. 6a shows a safety ring consisting of a ceramic ring and a damping ring having a clip connection
  • Fig. 6b shows the safety ring of Fig. 6a mounted in the holder by means of a clip connection
  • Fig. 7a shows a front safety ring with a ceramic ring and a split damping ring in the holder
  • Fig. 7b shows a rear safety ring with a ceramic ring and a split damping ring mounted in the holder.
  • the aim of the invention is a device for protecting parts of a system of a spinning rotor with a magnetic bearing by preventing contact between a shaft 1 of the spinning rotor and parts of the magnetic bearing or a drive mechanism in the event of loss of the shaft levitation and/or in the event of excessive lateral deflection of the shaft from the axis of the magnetic bearing, for example, as a result of critical frequency shaft vibration, increased rotor unbalance or a power failure.
  • the device comprises at least two safety rings 2, 3, easily replaceable, detachably mounted in holders 4, which are arranged in a known manner in an unillustrated body of the magnetic bearing.
  • the holders 4 are arranged in the front and rear parts of the shaft 1, as shown in Fig. 2.
  • both the front safety ring 2 and the rear safety ring 3 are straight-through.
  • the rear safety ring 3 is provided with a bottom 35, and so it is only partially straight-through for the shaft 1, as shown in Figs. 1b, 4b and 7b.
  • the rear safety ring 3 is straight-through, and the rear fade of the shaft ⁇ is secured by other means.
  • At least the front safety ring 2 is mounted detachably in the holder 4, preferably by a bayonet connection, or it is attached by means of a clip or a threaded coupling.
  • the invention will be further explained in detail with reference to the bayonet connection of the front safety ring 2.
  • a bayonet cap 20 is formed on the first safety ring 2 fitted with bayonet protrusions 21 and in the holder 4 is formed an opening with shaped recesses 41 for the passage of the protrusions 21 of the bayonet connection 20 of the safety ring 2.
  • fastening bayonet recesses 42 are provided on the inside of the holder 4 and are located in the direction of the shaft 1. rotation away from the shaped recesses 41 and terminate in stops 43 to define the possible end position of the safety ring 2 so that the bayonet protrusions 21 of the bayonet cap 20 of the safety ring 2_can abut on the stops_43.
  • the front safety ring 2 is for the bayonet fastening provided with a head 22 which abuts in the connected position on the front side of the holder 4.
  • a head 22 which abuts in the connected position on the front side of the holder 4.
  • the depth of the bayonet recesses 42 decreases in the direction of the shaft rotation to achieve a firmer connection, since during the rotation of the safety ring 2 in the original direction of the shaft 1 after the impact of the shaft 1 after the loss of levitation, the clamping force acting between the bottom of the recess and the bearing surface of the bayonet protrusions 21 and the bearing surface of the head 22 of the safety ring 2 increases and hence the resistance against the rotation of the safety ring also increases.
  • a spacing member 5 is inserted between its head 22 and the holder 4, which, in the illustrated embodiment, is formed by a resilient metal pad, but in an unillustrated embodiment may be formed by an elastic element, for example, by a rubber pad, which at the same time seals the gap in the bayonet connection to protect it from dust.
  • the rear safety ring 3 may be mounted in the rear holder 4 also by means of a bayonet connection, but since it is not manipulated during normal repairs or maintenance, it is more frequently rigidly connected to the holder 4 by any known method.
  • a bayonet cap 30 having bayonet protrusions 31 is provided on the rear safety ring 3 and the head 32 of the rear safety ring 3 abuts on the inner side of the rear holder 4.
  • the actual connection of the rear safety ring 3 and the holder 4 is then created in the same manner as in the case of the front safety ring 2.
  • the safety ring 2, 3 for the bayonet connection with the holder 4 is inserted into an opening 40 in a pre-centered holder 4, and by turning slightly the safety ring 2, 3, all the surfaces which abut on each other are pressed together.
  • the bayonet protrusions 21_, 31 of the safety ring 2, 3 do not rest on the stops 43 of the holder 4.
  • the shaft 1 surface may come into contact with the inner surface of the safety ring 2, 3.
  • the safety ring 2, 3 can be rotated until its bayonet protrusions 21_, 31 abut on the stops 43 terminating the bayonet recesses 42 in the holder 4, reducing the impact energy, thereby reducing the risk of damage to the safety ring 2. 3.
  • the rotation of the safety ring 2, 3 need not take place after each impact of the shaft A on the safety ring 2, 3, it depends especially on the distribution of the shaft 1 energy in the event of the impact.
  • the respective safety ring When replacing the shaft A and/or the safety ring 2, 3 and/or when cleaning the inner space of the magnetic bearing, the respective safety ring is turned against the direction of the shaft 1 rotation to a position in which the bayonet protrusions 21 , 31 of the safety ring 2, 3 are situated opposite the shaped recesses 41 of the holder 4 and the safety ring 2, 3 is removed.
  • the front safety ring 2 is usually removed together with the shaft , whereby the rear safety ring 3 remains and, after performing the respective reverse operation, with the shaft l ⁇ the front safety ring 2 returns to the holder 4 and is tightened by turning in the direction of the shaft 1 rotation. If the safety ring 2, 3 is damaged, the defective ring 2, 3 is replaced in this manner with a new one.
  • the bayonet connection is replaced with a clip connection, as shown in Fig. 2 and in Figs. 6a, b of the front safety ring 2.
  • the front safety ring 2 is provided with a clip closure 200, which is part of the damping ring 24, and its hook is snapped around the circumference of the opening in the holder 4.
  • a thread is formed in the opening of the holder 4 and the respective part of the safety ring 2 is provided with the same thread.
  • the thread tightening direction is the same as the direction of the shaft i rotation.
  • the inner part of the safety ring 2, 3 is formed by a ceramic ring 23, 33 which is mounted in the body of the safety ring 2, 3 which constitutes a damping ring 24, 34 and may be made of plastic or another material, ensures short-term partial deformation of the safety ring after the possible shaft ⁇ impact, i.e., it may be made of a material with a greater reversible deformation than that of the ceramic ring 23, 33, which partially removes the disadvantage of the brittleness of the ceramic material.
  • a bayonet cap, or a clip connection with the holder 4, or a thread for a threaded coupling to the holder 4_ is formed on the outer circumference of the damping ring 24, 34.
  • the damping ring 24, 34 is connected to the ceramic ring 23, 33 by any suitable type of connection, such as a clip connection, as shown in Figs. 2, 4 and 6, by pressing, see Fig. 1 , or by a threaded coupling.
  • the entire safety ring 2, 3 is created from ceramic material, including the bayonet cap 20, 30, as shown in Fig. 5.
  • at least the part of the holder 4, 30 with an opening 40 with shaped recesses 41 for the passage of the bayonet cap 20, 30 of the safety ring 2, 3, is made of a material having a reversible shape deformation greater than that of a ceramic ring, for example it is made of plastic, which ensures short- term partial deformation of the safety ring in the event of the shaft impact and constitutes a damping ring 24, 34.
  • the entire holder 4 is made of such a material.
  • the ceramic ring 23, 33 constituting the safety ring 2, 3 in another alternative embodiment is mounted in a damping ring 24, 34 made of a material whose reversible deformation is greater than that of the ceramic ring 23, 33.
  • t e damping ring 24, 34 is rigidly mounted in the body of the safety ring 2, 3, or it even constitutes this body.
  • FIG. 2 Another alternative embodiment of a rear safety ring 3 is shown in Fig. 2, wherein the damping ring 34 is rigidly connected to the holder 4 and the ceramic ring 33 is mounted in the damping ring 34 by a clip connection.
  • Shapes, dimensions, suitable materials and their strength, hardness, the size of reversible deformation (flexibility) and other properties and combinations of the individual parts of the safety rings 2, 3 and the holder 4 are selected according to the specific technological conditions.
  • the inner opening of the ceramic ring 23, 33 has an increased surface roughness, preferably greater than or equal to Ra 1.6
  • the same or similar result is achieved by interrupting the surface of the inner opening of the ceramic ring 23, 33 by at least one groove extending from one face to the other.
  • the safety ring 2, 3 on the holder 4_ is screwed by at least two bolts 6.
  • the front safety ring 2 is configured as a ring 26 which comprises a flange portion 261 and a shoulder 262 to be inserted into the opening in the holder 4.
  • a ring 26 which comprises a flange portion 261 and a shoulder 262 to be inserted into the opening in the holder 4.
  • three evenly spaced openings 263 for the bolts 6 are arranged around the circumference.
  • a groove 264 for a resilient sealing member is formed in the bearing surface of the flange portion 261 to prevent dust penetration.
  • the front safety ring 2 can consist of more rings, as described above.
  • the rear safety ring 3 consists of an annular portion provided with a bottom 35 which is arranged at the end of the opening for inserting the rear portion of the shaft 1_ of the spinning rotor.
  • the rear safety ring 3 can also be formed by a multi- ring assembly as described above. List of references

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Abstract

L'invention concerne un dispositif permettant de protéger des parties d'un système d'un rotor de filage avec un palier magnétique en empêchant le contact entre un arbre (1) du rotor de filage et des parties du palier magnétique ou un mécanisme d'entraînement en cas de perte de lévitation de l'arbre (1) et/ou en cas de déviation latérale excessive de l'arbre (1) par rapport à l'axe du palier magnétique. Le dispositif comprend au moins : deux anneaux de sécurité (2, 3) montés dans des supports (4) agencés dans les parties avant et arrière de l'arbre (1), à travers lesquelles passe l'arbre (1) dans l'état de lévitation sans contact avec celles-ci. Au moins l'anneau de sécurité avant (2) est fixé de manière amovible dans le support (4), par exemple au moyen d'un raccordement à baïonnette ou au moyen d'un raccordement par encliquetage ou d'un accouplement fileté.
PCT/CZ2018/050042 2017-08-15 2018-08-14 Dispositif de protection de parties d'un système d'un rotor de filage comprenant un palier magnétique WO2019034187A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CZ2017-466A CZ2017466A3 (cs) 2017-08-15 2017-08-15 Zařízení pro ochranu součástí systému spřádacího rotoru s magnetickým ložiskem před kontaktem hřídele spřádacího rotoru s částmi magnetického ložiska nebo pohonu při ztrátě levitace hřídele
CZCZPV2017-466 2017-08-15

Publications (1)

Publication Number Publication Date
WO2019034187A1 true WO2019034187A1 (fr) 2019-02-21

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ID=63708056

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CZ2018/050042 WO2019034187A1 (fr) 2017-08-15 2018-08-14 Dispositif de protection de parties d'un système d'un rotor de filage comprenant un palier magnétique

Country Status (2)

Country Link
CZ (1) CZ2017466A3 (fr)
WO (1) WO2019034187A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115135824A (zh) * 2020-02-20 2022-09-30 尚科纺织企业工业及贸易公司 用于环锭纺纱机或环锭加捻机的卷绕和加捻装置

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6040816A (ja) * 1983-08-12 1985-03-04 Hitachi Ltd セラミツクスすべり軸受
DE3710962A1 (de) * 1986-04-12 1987-10-15 Skf Textilmasch Komponenten Offen-end-spinnvorrichtung mit elektromotorischem einzelantrieb fuer den spinnrotor
JPH04203523A (ja) * 1990-11-29 1992-07-24 Nachi Fujikoshi Corp 磁気軸受スピンドル
US5739609A (en) * 1997-04-09 1998-04-14 Koyo Seiko Co., Ltd. Magnetic bearing apparatus
DE19827606A1 (de) * 1998-06-20 1999-12-23 Schlafhorst & Co W Lageranordnung für eine Offenend-Spinnvorrichtung
DE29920395U1 (de) * 1999-11-20 2000-01-20 Schlafhorst & Co W Lagerung für eine Offenend-Spinnvorrichtung
DE10022736A1 (de) * 2000-05-10 2001-11-15 Schlafhorst & Co W Magnetlageranordnung für eine Offenend-Spinnvorrichtung
DE102008016745A1 (de) * 2008-04-02 2009-10-08 Oerlikon Textile Gmbh & Co. Kg Lagereinrichtung für einen Spinnrotor

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6040816A (ja) * 1983-08-12 1985-03-04 Hitachi Ltd セラミツクスすべり軸受
DE3710962A1 (de) * 1986-04-12 1987-10-15 Skf Textilmasch Komponenten Offen-end-spinnvorrichtung mit elektromotorischem einzelantrieb fuer den spinnrotor
JPH04203523A (ja) * 1990-11-29 1992-07-24 Nachi Fujikoshi Corp 磁気軸受スピンドル
US5739609A (en) * 1997-04-09 1998-04-14 Koyo Seiko Co., Ltd. Magnetic bearing apparatus
DE19827606A1 (de) * 1998-06-20 1999-12-23 Schlafhorst & Co W Lageranordnung für eine Offenend-Spinnvorrichtung
DE29920395U1 (de) * 1999-11-20 2000-01-20 Schlafhorst & Co W Lagerung für eine Offenend-Spinnvorrichtung
DE10022736A1 (de) * 2000-05-10 2001-11-15 Schlafhorst & Co W Magnetlageranordnung für eine Offenend-Spinnvorrichtung
DE102008016745A1 (de) * 2008-04-02 2009-10-08 Oerlikon Textile Gmbh & Co. Kg Lagereinrichtung für einen Spinnrotor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115135824A (zh) * 2020-02-20 2022-09-30 尚科纺织企业工业及贸易公司 用于环锭纺纱机或环锭加捻机的卷绕和加捻装置

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