EP0765957A2 - Entraînement et palier pour un rotor sans arbre de filage à fibre libérée - Google Patents

Entraînement et palier pour un rotor sans arbre de filage à fibre libérée Download PDF

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Publication number
EP0765957A2
EP0765957A2 EP96115129A EP96115129A EP0765957A2 EP 0765957 A2 EP0765957 A2 EP 0765957A2 EP 96115129 A EP96115129 A EP 96115129A EP 96115129 A EP96115129 A EP 96115129A EP 0765957 A2 EP0765957 A2 EP 0765957A2
Authority
EP
European Patent Office
Prior art keywords
gas
bearing
stator
outlet bores
housing
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP96115129A
Other languages
German (de)
English (en)
Other versions
EP0765957A3 (fr
Inventor
Wilhelm Birkenmaier
Anton Dr.Ing. Paweletz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SKF Textilmaschinen Komponenten GmbH
Original Assignee
SKF Textilmaschinen Komponenten GmbH
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 SKF Textilmaschinen Komponenten GmbH filed Critical SKF Textilmaschinen Komponenten GmbH
Publication of EP0765957A2 publication Critical patent/EP0765957A2/fr
Publication of EP0765957A3 publication Critical patent/EP0765957A3/fr
Withdrawn legal-status Critical Current

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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
    • D01H4/14—Rotor driven by an electric motor

Definitions

  • the invention relates to a device for an OE spinning machine with drive and bearing for a shaftless spinning rotor according to the preamble of claim 1.
  • Such a device with drive and bearing for a shaftless OE spinning rotor is known from patent application WO 92/01096.
  • Their combined Manget gas bearing with plane-parallel bearing surfaces is characterized by extremely low friction losses and by a radial force-free rotation of the spinning rotor mounted on it around the axis of gravity in the supercritical speed range.
  • Such a device is particularly suitable for driving very rapidly rotating spinning rotors.
  • the gas outlet bores of the gas bearing are arranged between a central centering and holding magnet arrangement and the core of the stator. You are therefore close to the axis of rotation of the spinning rotor. Since the bearing surface to be supported increases with the square of the distance from the axis of rotation, the gas supporting force in the edge region can be inadequate, particularly in the case of large rotors. This can only be countered in the known device by correspondingly increasing the gas pressure, which results in a greater outlay, particularly in terms of energy. In addition, the arrangement of the gas outlet bores near the axis of rotation in the case of large rotors does not result in sufficient stability of the bearing in transient drive phases of the rotor and a tendency to wobble.
  • the object of the invention is to improve the operational safety of the device.
  • the device should be suitable for driving spinning rotors of different sizes.
  • the arrangement according to the invention of the gas outlet bores in the cross-sectional area of the core of the stator results in an advantageous and inexpensive pressure distribution in the bearing surface.
  • the gas is distributed without disturbing the uniformity of the magnetic flux.
  • the gas outlet openings can be arranged within the annular gap without the core of the stator having to be damaged for this purpose.
  • the gas distribution according to the invention results in a gas pressure distribution that is matched to this, particularly in the case of large rotor diameters.
  • the arrangement of rings in the annular gap on both sides results in a gas space for gas distribution in the annular gap.
  • the gas outlet bores and a gas inlet opening are easy to make in these rings.
  • stator cores are segment-like, there are winding gaps through which axial projections of the upper ring can pass. These axial projections carry the gas outlet bores. Recesses in the area of the exit holes reduce the hole length.
  • the design of the gas store as a two-circuit system opens up various possibilities for increasing the flexibility of the system if both circuits can be operated together or individually with the same or different gas pressure. Different combinations can be used to meet a wide variety of requirements with regard to operating conditions or operational safety. In the event of faults in one circuit, operational safety can also be guaranteed by the other circuit. In addition, an adaptation to different rotors can be done easily.
  • the arrangement of pressure sensors in the gas supply system enables specific monitoring and controllability of the storage gas pressure. This increases the operational reliability of the system.
  • a further additional increase in the operational reliability of the system can result if temperature sensors are provided for checking the storage temperature. These can be positioned and contacted together with Hall sensors for motor control available for motor control on a sensor board designed as a conductor foil. Both types of sensors are then in the free winding gaps, with the temperature sensors preferably being in other winding gaps as the Hall sensors.
  • Figure 1 shows a longitudinal section of the device with attached spinning rotor 1, which is positioned in a spinning machine, not shown, that the axis of rotation and the extraction nozzle are aligned.
  • a core 2 of the stator with multi-phase winding 3 is firmly and tightly cast with a sealing compound 5 in a one-piece stator housing 4.
  • stator housing 4 In the stator housing 4, the following elements are combined to form a part or formed on it:
  • a yoke disk 14 for holding and centering magnets 15 and connections 16 for supply lines 17 are integrated in the stator housing 4.
  • the potting compound 5 filling the winding gaps, together with the wall of the stator housing 4 and the holding and centering magnets 15, form the plane-parallel bearing surface 8.
  • the open side of the gas space 18 in the stator housing 4 is sealed by a gas bearing cover 20 with an injected connecting piece 21 containing a threaded bore.
  • the gas bearing cover 20 is screwed to a threaded pin 22 of the yoke disk 14 injected into the stator housing 4.
  • the gas space 18 of the stator housing 4 is reinforced by internal ribs 23.
  • the winding connections 24 are led out through segment-shaped openings in the stator housing 4 and connected to a contact point 25 together with the sensor board 13.
  • the elastic suspension of the stator consists of the spring and damping elements 10 and 11 which are designed as leaf springs 10 molded onto a lower housing part 26 of a device housing 27 and molded rod springs 11 at their free ends.
  • the bar springs 11 are snapped into the holder 9 of the stator housing 4.
  • the centering neck of the device housing 27 serves as a fitting element 28 for the installation of the device in the spinning machine.
  • the bearing center determined by the holding and centering magnets 15 is positioned by determining and by means of the spinning rotor 1 rotating supercritically in the installed position of the device radial displacement of the lower housing part 26 relative to an upper housing part 29 is brought into the central position and is fixed there by connecting screws 30 of the device housing 27.
  • the device works as follows: A balance is formed between the gas pressure and the magnetic force of the holding and centering magnets 15, so that the spinning rotor 1 can rotate about its axis of gravity without contact and supercritically. So that the spinning rotor 1 can pass through critical speeds without problems, the vibrations which occur and are transmitted to the stator via a rigid magnetic guide are damped by its elastic suspension in the device housing 27.
  • the spinning rotor 1 is surrounded by a guide ring 32 of the device housing 27 to form an annular gap 31, which guides the rotor deflection e.g. in the critical speed, limited.
  • FIG. 2 shows a top view of the stator with two partial sections of its stator housing 4.
  • the connections 16 of the supply for the cooling channel 7 integrated in the stator housing 4 are made visible.
  • the other partial section shows the winding 3 located under the potting compound 5 and the sensor board 13 with a sensor 33 in the winding gap 34.
  • the combined magnetic-gas bearing 35 are shown as rings; a circle of gas outlet bores 19 in the stator housing 4 is visible around the annular holding and centering magnets 15.
  • the sensor board 13 is guided to the contact point 25 through a segment-shaped opening in the stator housing 4.
  • FIG. 3 shows in longitudinal section an embodiment with a one-piece stator and device housing.
  • the stator housing 4 and the lower housing part 26 are a common part, wherein between the two connections 36 are designed as spring and damping elements.
  • This one-piece housing is positioned using the same means of the exemplary embodiment described.
  • FIGS. 5 and 6 show the exemplary embodiment of a stator with a gas bearing 35 as a two-circuit system, in which the outlet bores 19 of one circle lie in the inner diameter region of the core 2 and outlet bores 37 of the second circle lie in the cross-sectional region of the core 2.
  • the core 2 consists of two concentric partial cores 38; 39, which form an annular gap 40 for gas distribution, which at both ends of rings 41; 42 is sealed. These are shown in more detail in FIGS. 5 and 6.
  • Fig. 5 shows the two rings 41; 42 in longitudinal section.
  • the upper ring 41 is connected to the lower ring 42 by webs 43, the thickness of which is smaller than the width of the annular gap 40.
  • the upper ring 41 has axial projections 45 for the outlet bores 37. After the assembly, the projections 45 lie in winding gaps 34 of the stator and have the length of the cast winding 3.
  • the lower ring 42 has a gas inlet opening 46 which can be connected to a connecting piece 44.
  • Fig. 6 shows a top view of the upper ring 41; The webs 43 are visible in 3 partial sections. On the upper ring 41, the axial projections 45, which end in the bearing surface 8 after the stator has been installed, are shown with the outlet bores 37.
  • the exemplary embodiment according to FIG. 4 can be simplified by dispensing with the inner gas bearing circuit. This eliminates the inner outlet bores 19 and the gas bearing cover 20 with connecting pieces. If the outlet bores 37 lie in the cross-sectional area of the stator, a gas pressure distribution which is matched to the larger rotor diameter is obtained.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP96115129A 1992-03-11 1993-02-26 Entraînement et palier pour un rotor sans arbre de filage à fibre libérée Withdrawn EP0765957A3 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4207673A DE4207673C1 (fr) 1992-03-11 1992-03-11
DE4207673 1992-03-11
EP93904021A EP0630430A1 (fr) 1992-03-11 1993-02-26 Entrainement et palier pour un rotor sans arbre de filage a fibre liberee

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP93904021.8 Division 1993-09-19

Publications (2)

Publication Number Publication Date
EP0765957A2 true EP0765957A2 (fr) 1997-04-02
EP0765957A3 EP0765957A3 (fr) 1997-07-09

Family

ID=6453749

Family Applications (2)

Application Number Title Priority Date Filing Date
EP96115129A Withdrawn EP0765957A3 (fr) 1992-03-11 1993-02-26 Entraînement et palier pour un rotor sans arbre de filage à fibre libérée
EP93904021A Withdrawn EP0630430A1 (fr) 1992-03-11 1993-02-26 Entrainement et palier pour un rotor sans arbre de filage a fibre liberee

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP93904021A Withdrawn EP0630430A1 (fr) 1992-03-11 1993-02-26 Entrainement et palier pour un rotor sans arbre de filage a fibre liberee

Country Status (5)

Country Link
US (1) US5570572A (fr)
EP (2) EP0765957A3 (fr)
JP (1) JPH07507104A (fr)
DE (1) DE4207673C1 (fr)
WO (1) WO1993018212A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0875685A2 (fr) * 1997-04-28 1998-11-04 Ntn Corporation Dispositif de palier gaz-magnétique, pressurisé de l'extérieur et broche utilisant un tel palier

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4342584A1 (de) * 1993-12-14 1995-06-22 Skf Textilmasch Komponenten Einzelmotorischer Antrieb eines schaftlosen Spinnrotors einer Offenend-Spinnmaschine
DE4342582A1 (de) * 1993-12-14 1995-06-22 Skf Textilmasch Komponenten Magnet-Gaslager eines als Läufer eines Axialfeldmotors ausgebildeten schaftlosen Spinnrotors einer Offenend-Spinnmaschine
DE4404243B4 (de) * 1994-02-10 2005-08-25 Saurer Gmbh & Co. Kg Verfahren und Einrichtung zum Betreiben einer Offenend-Rotorspinneinheit mit einzelmotorischem elektrischem Antrieb des Spinnrotors
DE4409992A1 (de) * 1994-03-23 1995-09-28 Skf Textilmasch Komponenten Einzelmotorischer Antrieb eines schaftlosen Spinnrotors einer Offenend-Spinnmaschine
DE4421406A1 (de) * 1994-06-18 1995-12-21 Skf Textilmasch Komponenten Einzelmotorischer Antrieb eines als permanentmagnetischer Läufer eines Axialfeldmotors ausgebildeten schaftlosen Spinnrotors und Verfahren zum Betreiben des einzelmotorischen Antriebes
DE19532735B4 (de) * 1995-09-05 2004-02-05 Stahlecker, Fritz Fadenabzugsdüse für OE-Rotorspinnmaschinen
DE19608267C1 (de) * 1996-03-05 1997-03-06 Skf Textilmasch Komponenten Antriebs- und Lagervorrichtung für Spinnrotoren von Offenend-Spinnmaschinen
CZ284734B6 (cs) * 1997-09-02 1999-02-17 Rieter Elitex A.S. Spřádací ústrojí rotorového dopřádacího stroje
CZ2013209A3 (cs) * 2013-03-22 2014-08-27 Rieter Cz S.R.O. Způsob zjišťování změn polohy bezhřídelového spřádacího rotoru rotorového dopřádacího stroje v dutině aktivního magnetického ložiska a spřádací jednotka rotorového dopřádacího stroje s aktivním magnetickým ložiskem pro uložení bezhřídelového spřádacího rotoru
DE102018117861A1 (de) * 2018-07-24 2020-01-30 Saurer Spinning Solutions Gmbh & Co. Kg Offenend-Rotorspinnvorrichtung
DE102018006783A1 (de) * 2018-08-28 2020-03-05 Saurer Spinning Solutions Gmbh & Co. Kg Düsenbefestigung für eine Offenend-Rotorspinnvorrichtung
CN109488689B (zh) * 2018-11-26 2024-02-02 杭州电子科技大学 气浮主轴承载补偿装置及方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0190440A2 (fr) * 1985-02-04 1986-08-13 SKF Nova AB Dispositif comportant un palier à pression
JPS6421216A (en) * 1987-07-16 1989-01-24 Fanuc Ltd Pneumatic bearing electrically-driven motor
WO1992001096A1 (fr) * 1990-07-10 1992-01-23 Skf Textilmaschinen-Komponenten Gmbh Entrainement et palier pour rotor sans arbre, de filature a fibre liberee

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2517973C2 (de) * 1975-04-23 1980-10-30 Dornier System Gmbh, 7990 Friedrichshafen Lagerung für mit hoher Drehzahl rotierende, horizontale Spindeln von Spinnturbinen
DE2630031A1 (de) * 1976-07-03 1978-01-12 Teldix Gmbh Lager- und antriebsanordnung fuer eine offen-end-spinnturbine
DE2640111C2 (de) * 1976-09-07 1984-12-06 Teldix Gmbh, 6900 Heidelberg OE-Rotorspinneinheit
DE3000357C2 (de) * 1980-01-07 1982-12-30 Arthur Pfeiffer Vakuumtechnik Wetzlar Gmbh, 6334 Asslar Mechanisches Hilfslager für magnetische Lagerung
EP0082549B1 (fr) * 1981-12-22 1985-11-27 BBC Aktiengesellschaft Brown, Boveri & Cie. Entraînement et palier d'une turbine de filature à bout libéré
JPS6148613A (ja) * 1984-08-15 1986-03-10 Nippon Telegr & Teleph Corp <Ntt> 複合軸受
CA1295723C (fr) * 1987-07-23 1992-02-11 Robert A. Golobic Paliers a gaz pour laser a gaz
SU1687660A1 (ru) * 1989-06-05 1991-10-30 Научно-Производственное Объединение По Оборудованию Для Химических Волокон Привод крутильного органа текстильной машины

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0190440A2 (fr) * 1985-02-04 1986-08-13 SKF Nova AB Dispositif comportant un palier à pression
JPS6421216A (en) * 1987-07-16 1989-01-24 Fanuc Ltd Pneumatic bearing electrically-driven motor
WO1992001096A1 (fr) * 1990-07-10 1992-01-23 Skf Textilmaschinen-Komponenten Gmbh Entrainement et palier pour rotor sans arbre, de filature a fibre liberee

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 013, no. 194 (M-823), 10.Mai 1989 & JP 01 021216 A (FANUC LTD), 24.Januar 1989, *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0875685A2 (fr) * 1997-04-28 1998-11-04 Ntn Corporation Dispositif de palier gaz-magnétique, pressurisé de l'extérieur et broche utilisant un tel palier
EP0875685A3 (fr) * 1997-04-28 2000-04-19 Ntn Corporation Dispositif de palier gaz-magnétique, pressurisé de l'extérieur et broche utilisant un tel palier
US6288465B1 (en) 1997-04-28 2001-09-11 Ntn Corporation Combined externally pressurized gas-magnetic bearing assembly and spindle device utilizing the same
US6373156B2 (en) 1997-04-28 2002-04-16 Ntn Corporation Combined externally pressurized gas-magnetic bearing assembly and spindle device utilizing the same

Also Published As

Publication number Publication date
DE4207673C1 (fr) 1993-03-11
EP0630430A1 (fr) 1994-12-28
WO1993018212A1 (fr) 1993-09-16
US5570572A (en) 1996-11-05
JPH07507104A (ja) 1995-08-03
EP0765957A3 (fr) 1997-07-09

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