EP 0765957 A3 19970709 - Drive and bearing for a shaft-less open-end spinning rotor
Title (en)
Drive and bearing for a shaft-less open-end spinning rotor
Title (de)
Antrieb und Lager für einen schaftlosen OE-Spinnrotor
Title (fr)
Entraînement et palier pour un rotor sans arbre de filage à fibre libérée
Publication
Application
Priority
- DE 4207673 A 19920311
- EP 93904021 A 19930226
Abstract (en)
[origin: DE4207673C1] Open-end spinning machines require a device with a drive and a bearing for shaft-less spinning rotors (1) that rotate at a very high speed. The device must drive and support in a reliable manner different spinning rotors, with low losses. The structure and mounting of the device must not be costly. A device that can be easily and precisely mounted in a reduced space has an axial field motor whose rotor is secured to the spinning rotor and whose stator (2) is secured in a single-piece stator bearing housing (4). Besides the housing for the combined magnetic-gas bearing (35) the single-piece stator housing (4) encloses the remaining elements of the device for which it forms a common housing, on which are also shaped holders (9) for the elastic stator suspension (10, 11). The integration of the components of the device in a single stator housing not only reduces its production costs, it also avoids inaccuracies arising from jointing deviations of individual pieces and the time required for glueing together the individual pieces. A two-circuit gas system (14, 37) for the bearing (35) can improve adaptation to different working conditions and increase working safety. This device allows the axis of rotation of the open-end spinning rotor to be adjusted with respect to the axis of the drawing-off nozzle, so that both axes are aligned.
IPC 1-7
IPC 8 full level
F16C 32/00 (2006.01); D01H 4/12 (2006.01); D01H 4/14 (2006.01)
CPC (source: EP US)
D01H 4/14 (2013.01 - EP US)
Citation (search report)
- [A] EP 0190440 A2 19860813 - SKF NOVA AB [SE]
- [A] WO 9201096 A1 19920123 - SKF TEXTILMASCH KOMPONENTEN [DE]
- [A] PATENT ABSTRACTS OF JAPAN vol. 013, no. 194 (M - 823) 10 May 1989 (1989-05-10)
Designated contracting state (EPC)
CH DE IT LI
DOCDB simple family (publication)
DE 4207673 C1 19930311; EP 0630430 A1 19941228; EP 0765957 A2 19970402; EP 0765957 A3 19970709; JP H07507104 A 19950803; US 5570572 A 19961105; WO 9318212 A1 19930916
DOCDB simple family (application)
DE 4207673 A 19920311; EP 9300443 W 19930226; EP 93904021 A 19930226; EP 96115129 A 19930226; JP 51529493 A 19930226; US 29585994 A 19940930