EP0540818B1 - Support disc - Google Patents
Support disc Download PDFInfo
- Publication number
- EP0540818B1 EP0540818B1 EP92110026A EP92110026A EP0540818B1 EP 0540818 B1 EP0540818 B1 EP 0540818B1 EP 92110026 A EP92110026 A EP 92110026A EP 92110026 A EP92110026 A EP 92110026A EP 0540818 B1 EP0540818 B1 EP 0540818B1
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- EP
- European Patent Office
- Prior art keywords
- hub ring
- ring
- support
- support disc
- disc according
- 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.)
- Expired - Lifetime
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- 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
Definitions
- the invention relates to a support disc according to the preamble of claim 1.
- Such a support disc is known from US 4,893,947.
- the support ring and the hub ring are each made of polymer material and are positively connected to one another.
- the positive connection takes place in the area of the outer circumference of the hub ring, with recesses of the hub ring which are undercut in the radial direction being completely filled by the material of the support ring.
- the hub ring consists of a nylon-based thermoplastic with a glass fiber content of 5 to 10% by weight.
- the support ring is made of a flexible elastomer.
- the hub ring is provided with a cylindrical central recess, in which an axis or shaft is penetrated during the intended use.
- FIG. 1 Another support disk is known from US Pat. No. 4,893,946, the support ring of which is made of a polymeric material and is positively connected to a hub ring which is preferably made of a metallic material.
- the positive connection takes place in that a projection of the hub ring or flywheel ring arranged in the radial direction is arranged in an undercut recess of the flywheel ring or hub ring.
- the connection can, for example, be dovetail-shaped when viewed in cross section.
- the hub ring has a central, cylindrical recess and is shrunk onto, for example, a lift shaft. If the hub ring consists of a metallic material, the attachment of the support ring to the hub ring is problematic.
- the hub ring must be thoroughly degreased and then treated in such a way that the support ring made of elastomeric material is fixed on the outer circumference and can be reliably held there during the intended use. In terms of manufacturing technology, the production of such a component is very time-consuming.
- the invention has for its object to further develop a support disc of the type mentioned in such a way that the axial positioning of the support disc on a drive shaft is simplified, that the support disc is simple, quick and economically producible and has good rotational symmetry.
- the hub ring consists of a polymeric material which has a modulus of elasticity of 7000 to 13000 N / mm2, a heat resistance of 150 to 250 ° C and an elongation at break of 1.3 to 3% and that Hub ring is provided in the region of its inner circumference with at least one holding claw movable in the radial direction and can be snapped into a radially outwardly open groove of a drive shaft used by means of the holding claw.
- the support ring and the hub ring form an inseparable unit, which can be produced easily and inexpensively on an industrial scale and does an excellent job of meeting the conditions required here.
- the unit is characterized by a high level of dimensional stability, which enables it to be securely fixed in long term use
- the use of secondary aids is usually unnecessary, and a simple, axial pressing of the hub ring onto the shaft is sufficient.
- shaft-hub connections known from general mechanical engineering can of course also be used, such as polygon profiles or splined shaft connections.
- the hub ring is made of polymer material, there is no need to fear damage to the hub ring even when using a steel shaft and a pressed-on hub ring.
- elastomeric polyurethane Due to the use of elastomeric polyurethane for the production of the support ring, it has a particularly good abrasion resistance in connection with a damping behavior suitable for the application, which enables a good service life to be achieved.
- the hub ring is provided in the region of its inner circumference with at least one holding claw movable in the radial direction and can be snapped into an externally open groove of a drive shaft used by means of the holding claw.
- the axial positioning of the support disc on the drive shaft is particularly simple.
- the hub ring can have at least one groove arranged transversely to the circumferential direction in the region of its inner circumference, which can be brought into engagement with at least one projection of the drive shaft.
- This configuration which can also be combined, for example, with a holding claw, provides additional security against rotation of the support disk on the drive shaft.
- Shaft-hub connections with a polygonal profile or splined shaft connections are preferred.
- the hub ring can be I-shaped in the area of its radially outer boundary Profile and the support ring in the region of its radially inner boundary have a U-shaped profile, the U-shaped profile of the support ring encompassing the I-shaped profile of the hub ring on both sides with radially inwardly projecting legs.
- the contact area of the hub ring with respect to the support ring is thereby enlarged, which significantly increases the adhesion of the two rings to one another. This can effectively counteract changes in the deformation of the support ring caused by centrifugal force.
- polyurea has proven to be favorable with regard to the production of hub rings. This not only has a modulus of elasticity of 7000 to 13000 N / mm2, a heat resistance of 150 to 250 ° C and an elongation at break of 1.3 to 3%, but also has the property that the elastomeric polyurethane has a good adhesive base while avoiding expensive To offer pre-treatment measures. This is of great advantage for the economy of the production of the support disk according to the invention.
- elongation at break is understood to mean the change in length of a test specimen at any time, based on the original measuring length of the test specimen (DIN 53455).
- the elastic modulus is the relationship between the stress and the elongation in the case of the elongation of the rod understood with unimpeded reduction in cross-section (DIN 53457).
- heat distortion resistance is understood to mean the ability of a test specimen to largely retain its shape up to a certain temperature under certain, static stress (DIN 53461).
- the hub ring can have a signal transmitter in at least a partial area of its axial boundary surfaces.
- the signal transmitter can be formed by a light-reflecting film which is adhesively attached to the hub ring.
- the signal pickup can, for example, be connected in a signal-conducting manner to the drive of the support disk via a control device. Influencing the rotational speed of the support disk is thereby considerably simplified.
- the support disc shown in Figure 1 is intended for the rotor of an open-end spinning machine, which can reach speeds in the range of 130,000 / min.
- the support disk consists of a hub ring 1 made of polymeric material, which is rotationally symmetrical in shape and has an I-shaped profile on the outside in the radial direction.
- the hub ring 1 consists in this example of polyurea and has an elastic modulus of 10000 N / mm2, a heat resistance of 200 ° C and an elongation at break of 2.5%.
- the hub ring 1 is essentially perpendicular to the axis of rotation 9 of the support disk. It is axially penetrated in the central region of its I-shaped profile, within the radial extent of openings 4 evenly distributed in the circumferential direction, in this special case in the form of bores (FIGS. 1, 3, 4).
- the support ring 3 consists of elastomeric polyurethane, which is molded directly onto the hub ring 1.
- the support ring 3 has a substantially U-shaped profile, which surrounds the I-shaped profile of the hub ring 1 with legs 2 projecting radially inwards.
- the legs 2 are connected to each other by the openings 4 of the hub ring 1, whereby the support ring 3 is not only fixed to the hub ring 1 in an adhesive manner, but also due to a mutual, form-fitting enclosure or penetration of the profiles (FIG. 1, Figure 3). Even at the highest speeds, there is no fear of centrifugal force detaching the support ring 3 from the hub ring 1.
- FIG. 4 reference is made to an embodiment in which the hub ring 1 is provided in the region of its inner circumference with a holding claw 5 which is movable in the radial direction, the holding claw 5 being snapped into a groove 6 of a drive shaft 7 which is used and is open radially outwards.
- the axial fixing of the hub ring 1 on the drive shaft 7 is thereby simplified.
- a further embodiment which is not shown in more detail here, can consist in that in addition to the holding claw which is movable in the radial direction, a hub ring shaft connection is provided which has a polygonal profile or a spline. This ensures additional security in the circumferential direction.
- the support disk according to the invention is characterized by simple production, low manufacturing costs, unbalance phenomena which cannot be determined over the entire speed range and overall by good usage properties.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Mechanical Operated Clutches (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Description
Die Erfindung betrifft eine Stützscheibe nach dem Oberbegriff von Anspruch 1.The invention relates to a support disc according to the preamble of
Eine solche Stützscheibe ist aus der US 4,893,947 bekannt. Der Stützring und der Nabenring bestehen jeweils aus polymerem Werkstoff und sind formschlüssig miteinander verbunden. Die formschlüssige Verbindung erfolgt im Bereich des Außenumfangs des Nabenrings, wobei in radialer Richtung hinterschnittene Ausnehmungen des Nabenrings vom Werkstoff des Stützrings vollständig ausgefüllt sind. Der Nabenring besteht aus einem auf Nylon basierenden Thermoplast, der einen Glasfiberanteil von 5 bis 10 Gew.-% aufweist. Der Stützring besteht aus einem flexiblen Elastomer. Der Nabenring ist mit einer zylinderförmigen zentralen Ausnehmung versehen, in der während der bestimmungsgemäßen Verwendung von einer Achse oder Welle durchdrungen ist.Such a support disc is known from US 4,893,947. The support ring and the hub ring are each made of polymer material and are positively connected to one another. The positive connection takes place in the area of the outer circumference of the hub ring, with recesses of the hub ring which are undercut in the radial direction being completely filled by the material of the support ring. The hub ring consists of a nylon-based thermoplastic with a glass fiber content of 5 to 10% by weight. The support ring is made of a flexible elastomer. The hub ring is provided with a cylindrical central recess, in which an axis or shaft is penetrated during the intended use.
Aus der US 4,893,946 ist eine weitere Stützscheibe bekannt, deren Stützring aus einem polymeren Werkstoff besteht und formschlüssig mit einem bevorzugt aus metallischem Werkstoff bestehenden Nabenring verbunden ist. Die formschlüssige Verbindung erfolgt dadurch, daß ein in radialer Richtung angeordneter Vorsprung von Nabenring oder Schwungring in einer hinterschnittenen Ausnehmung von Schwungring oder Nabenring angeordnet ist. Die Verbindung kann beispielsweise im Querschnitt betrachtet schwalbenschwanzförmig ausgebildet sein. Der Nabenring weist eine zentrale, zylinderförmige Ausnehmung auf und wird beispielsweise auf eine Auftriebswelle aufgeschrumpft. Besteht der Nabenring aus einem metallischen Werkstoff, ist die Befestigung des Stützringes am Nabenring problematisch. Der Nabenring muß gründlich entfettet und sodann derart behandelt werden, daß der Stützring aus elastomerem Werkstoff am Außenumfang festgelegt und dort während der bestimmungsgemäßen Verwendung zuverlässig gehalten werden kann. In fertigungstechnischer Hinsicht ist die Herstellung eines derartigen Bauteils sehr zeitaufwendig.Another support disk is known from US Pat. No. 4,893,946, the support ring of which is made of a polymeric material and is positively connected to a hub ring which is preferably made of a metallic material. The positive connection takes place in that a projection of the hub ring or flywheel ring arranged in the radial direction is arranged in an undercut recess of the flywheel ring or hub ring. The connection can, for example, be dovetail-shaped when viewed in cross section. The hub ring has a central, cylindrical recess and is shrunk onto, for example, a lift shaft. If the hub ring consists of a metallic material, the attachment of the support ring to the hub ring is problematic. The hub ring must be thoroughly degreased and then treated in such a way that the support ring made of elastomeric material is fixed on the outer circumference and can be reliably held there during the intended use. In terms of manufacturing technology, the production of such a component is very time-consuming.
Der Erfindung liegt die Aufgabe zugrunde, eine Stützscheibe der eingangs genannten Art derart weiterzuentwickeln, daß die axiale Positionierung der Stützscheibe auf einer Antriebswelle vereinfacht ist, daß die Stützscheibe einfach, schnell und in wirtschaftlicher Hinsicht kostengünstig herstellbar ist und eine gute Rotationssymmetrie aufweist.The invention has for its object to further develop a support disc of the type mentioned in such a way that the axial positioning of the support disc on a drive shaft is simplified, that the support disc is simple, quick and economically producible and has good rotational symmetry.
Diese Aufgabe wird erfindungsgemäß mit den kennzeichnenden Merkmalen von Anspruch 1 gelöst. Auf vorteilhafte Ausgestaltungen nehmen die Unteransprüche Bezug.This object is achieved with the characterizing features of
Bei der erfindungsgemäßen Stützscheibe ist es vorgesehen, daß der Nabenring aus einem polymeren Werkstoff besteht, der einen Elastizitätsmodul von 7000 bis 13000 N/mm² aufweist, eine Wärmeformbeständigkeit von 150 bis 250° C sowie eine Bruchdehnung von 1,3 bis 3 % und daß der Nabenring im Bereich seines Innenumfangs mit wenigstens einer in radialer Richtung beweglichen Haltekralle versehen ist und mittels der Haltekralle in einer radial nach außen offenen Nut einer zur Anwendung gelangenden Antriebswelle einschnappbar ist.In the support disk according to the invention it is provided that the hub ring consists of a polymeric material which has a modulus of elasticity of 7000 to 13000 N / mm², a heat resistance of 150 to 250 ° C and an elongation at break of 1.3 to 3% and that Hub ring is provided in the region of its inner circumference with at least one holding claw movable in the radial direction and can be snapped into a radially outwardly open groove of a drive shaft used by means of the holding claw.
Der Stützring und der Nabenring bilden eine untrennbare Einheit, welche sich problemlos und kostengünstig in großtechnischem Maßstab erzeugen läßt und den vorliegend geforderten Bedingungen in einer ausgezeichneten Weise gerecht wird. Die Einheit zeichnet sich durch eine große Formbeständigkeit aus, was es ermöglicht, im langfristigen Gebrauch eine sichere Festlegung des Nabenringes, beispielsweise auf einer Welle, zu erzielen. Die Verwendung sekundärer Hilfsmittel ist zumeist entbehrlich, und es genügt ein einfaches, axiales Aufpressen des Nabenringes auf die Welle. Im übrigen können selbstverständlich auch aus dem allgemeinen Maschinenbau bekannte Wellen-Nabenverbindungen zur Anwendung gelangen, wie beispielsweise Polygonprofile oder Keilwellenverbindungen.The support ring and the hub ring form an inseparable unit, which can be produced easily and inexpensively on an industrial scale and does an excellent job of meeting the conditions required here. The unit is characterized by a high level of dimensional stability, which enables it to be securely fixed in long term use To achieve hub ring, for example on a shaft. The use of secondary aids is usually unnecessary, and a simple, axial pressing of the hub ring onto the shaft is sufficient. Incidentally, shaft-hub connections known from general mechanical engineering can of course also be used, such as polygon profiles or splined shaft connections.
Da der Nabenring aus polymerem Werkstoff besteht, ist auch bei der Verwendung einer Welle aus Stahl und aufgepreßtem Nabenring eine Beschädigung des Nabenringes nicht zu befürchten.Since the hub ring is made of polymer material, there is no need to fear damage to the hub ring even when using a steel shaft and a pressed-on hub ring.
Durch die Verwendung elastomeren Polyurethans für die Herstellung des Stützringes weist dieser eine besonders gute Abriebbeständigkeit in Verbindung mit einem für den Einsatzfall geeigneten Dämpfungsverhalten auf, was die Erzielung einer guten Gebrauchsdauer ermöglicht.Due to the use of elastomeric polyurethane for the production of the support ring, it has a particularly good abrasion resistance in connection with a damping behavior suitable for the application, which enables a good service life to be achieved.
Um besonderen Gegebenheiten des Anwendungsfalles gerecht zu werden, ist der Nabenring im Bereich seines Innenumfanges mit wenigstens einer in radialer Richtung beweglichen Haltekralle versehen und mittels der Haltekralle in einer nach außen offenen Nut einer zur Anwendung gelangenden Antriebswelle einschnappbar. Die axiale Positionierung der Stützscheibe auf der Antriebswelle ist dadurch besonders einfach.In order to meet special circumstances of the application, the hub ring is provided in the region of its inner circumference with at least one holding claw movable in the radial direction and can be snapped into an externally open groove of a drive shaft used by means of the holding claw. The axial positioning of the support disc on the drive shaft is particularly simple.
Außerdem kann der Nabenring im Bereich seines Innenumfanges zumindest eine quer zur Umfangsrichtung angeordneten Nut aufweisen, die mit zumindest einem Vorsprung der Antriebswelle in Eingriff bringbar ist. Durch diese Ausgestaltung, die beispielsweise auch mit einer Haltekralle kombiniert sein kann, ergibt sich eine zusätzliche Sicherheit gegen eine Verdrehung der Stützscheibe auf der Antriebswelle. Zur Anwendung gelangen bevorzugt Wellen-Nabenverbindungen mit Polygonprofil oder Keilwellenverbindungen.In addition, the hub ring can have at least one groove arranged transversely to the circumferential direction in the region of its inner circumference, which can be brought into engagement with at least one projection of the drive shaft. This configuration, which can also be combined, for example, with a holding claw, provides additional security against rotation of the support disk on the drive shaft. Shaft-hub connections with a polygonal profile or splined shaft connections are preferred.
Der Nabenring kann im Bereich seiner radial äußeren Begrenzung ein I-förmiges Profil und der Stützring im Bereich seiner radial inneren Begrenzung ein U-förmiges Profil aufweisen, wobei das U-förmige Profil des Stützringes das I-förmige Profil des Nabenringes mit radial nach innen vorstehenden Schenkeln beiderseits umgreift. Die Kontaktfläche des Nabenringes in bezug auf den Stützring erfährt hierdurch eine Vergrößerung, was die Haftung beider Ringe aneinander wesentlich erhöht. Fliehkraftbedingten Deformierungsveränderungen des Stützringes läßt sich hierdurch wirksam begegnen.The hub ring can be I-shaped in the area of its radially outer boundary Profile and the support ring in the region of its radially inner boundary have a U-shaped profile, the U-shaped profile of the support ring encompassing the I-shaped profile of the hub ring on both sides with radially inwardly projecting legs. The contact area of the hub ring with respect to the support ring is thereby enlarged, which significantly increases the adhesion of the two rings to one another. This can effectively counteract changes in the deformation of the support ring caused by centrifugal force.
Als zweckmäßig hat es sich erwiesen, wenn die radiale Teilfläche des I-förmigen Profils des Nabenringes von gleichmäßig in Umfangsrichtung verteilten Durchbrechungen durchdrungen ist und wenn die Schenkel des Profils des Stützringes durch die Durchbrechungen hindurch einstückig ineinander übergehend ausgebildet sind. Der Naben- und der Stützring sind durch diese Ausbildung formschlüssig aneinander festgelegt, was auch unter ungünstigen Betriebsbedingungen eine gegenseitige Trennung voneinander so gut wie völlig ausschließt.It has proven to be expedient if the radial partial surface of the I-shaped profile of the hub ring is penetrated by perforations which are uniformly distributed in the circumferential direction and if the legs of the profile of the support ring are integrally formed into one another through the perforations. The hub and the support ring are positively fixed to each other by this design, which almost completely excludes mutual separation from each other even under unfavorable operating conditions.
Als günstig in bezug auf die Herstellung von Nabenringen hat sich die Verwendung von Polyharnstoff erwiesen. Dieser weist nicht nur ein Elastizitätsmodul von 7000 bis 13000 N/mm² auf, eine Wärmeformbeständigkeit von 150 bis 250° C und eine Bruchdehnung von 1,3 bis 3 %, sondern darüber hinaus die Eigenschaft hat, dem elastomerem Polyurethan eine gute Haftgrundlage unter Vermeidung aufwendiger Vorbehandlungsmaßnahmen zu bieten. Für die Wirtschaftlichkeit der Herstellung der erfindungsgemäßen Stützscheibe ist das von großem Vorteil.The use of polyurea has proven to be favorable with regard to the production of hub rings. This not only has a modulus of elasticity of 7000 to 13000 N / mm², a heat resistance of 150 to 250 ° C and an elongation at break of 1.3 to 3%, but also has the property that the elastomeric polyurethane has a good adhesive base while avoiding expensive To offer pre-treatment measures. This is of great advantage for the economy of the production of the support disk according to the invention.
Unter Bruchdehnung wird im Rahmen der vorliegenden Erfindung die auf die ursprüngliche Meßlänge des Probekörpers bezogene Längenänderung eines Prüflings zu jedem beliebigen Zeitpunkt verstanden (DIN 53455).In the context of the present invention, elongation at break is understood to mean the change in length of a test specimen at any time, based on the original measuring length of the test specimen (DIN 53455).
Unter dem Elastizitätsmodul wird im Rahmen der vorliegenden Erfindung der Zusammenhang zwischen der Spannung und der Dehnung im Falle der Stabdehnung bei ungehinderter Querschnittsverkleinerung verstanden (DIN 53457).In the context of the present invention, the elastic modulus is the relationship between the stress and the elongation in the case of the elongation of the rod understood with unimpeded reduction in cross-section (DIN 53457).
Unter der Wärmeformbeständigkeit wird im Rahmen der vorliegenden Erfindung die Fähigkeit eines Probekörpers verstanden, unter bestimmter, ruhender Beanspruchung seine Form bis zu einer bestimmten Temperatur weitgehend zu bewahren (DIN 53461).In the context of the present invention, heat distortion resistance is understood to mean the ability of a test specimen to largely retain its shape up to a certain temperature under certain, static stress (DIN 53461).
Gemäß einer weiteren vorteilhaften Ausgestaltung kann der Nabenring in zumindest einem Teilbereich seiner axialen Begrenzungsflächen einen Signalgeber aufweisen. Bevorzugt, im Hinblick auf die Vermeidung von Unwuchterscheinungen kann der Signalgeber durch eine Licht reflektierende Folie gebildet sein, die adhäsiv auf dem Nabenring festgelegt ist. Durch diese Ausgestaltung kann in besonders einfacher Weise eine Drehzahlüberwachung/-regelung der erfindungsgemäßen Stützscheibe erfolgen. Der Signalaufnehmer kann beispielsweise signalleitend über eine Steuereinrichtung mit dem Antrieb der Stützscheibe verbunden sein. Eine Beeinflussung der Rotationsgeschwindigkeit der Stützscheibe wird hierdurch wesentlich vereinfacht.According to a further advantageous embodiment, the hub ring can have a signal transmitter in at least a partial area of its axial boundary surfaces. Preferably, with a view to avoiding imbalance phenomena, the signal transmitter can be formed by a light-reflecting film which is adhesively attached to the hub ring. This configuration allows the support disk according to the invention to be monitored and controlled in a particularly simple manner. The signal pickup can, for example, be connected in a signal-conducting manner to the drive of the support disk via a control device. Influencing the rotational speed of the support disk is thereby considerably simplified.
Der Gegenstand der Erfindung wird nachfolgend anhand der als Anlage beigefügten Zeichnung weiter verdeutlicht. Es zeigen:
- Fig. 1
- eine Stützscheibe in der Vorderansicht in teilweise geschnittener Darstellung;
- Fig. 2
- die Stützscheibe gemäß
Figur 1 in quergeschnittener Darstellung; - Fig. 3
- einen Ausschnitt aus der Stützscheibe gemäß
Figur 2 in vergrößerter Darstellung; - Fig. 4
- einen Segmentausschnitt aus einer alternativen Ausführungsform einer Stützscheibe in einer Ansicht von vorn.
- Fig. 1
- a support disc in the front view in a partially sectioned representation;
- Fig. 2
- the support plate according to Figure 1 in a cross-sectional view;
- Fig. 3
- a section of the support plate according to Figure 2 in an enlarged view;
- Fig. 4
- a segment of an alternative embodiment of a support plate in a view from the front.
Die in Figur 1 gezeigte Stützscheibe ist für den Rotor einer Offenendspinnmaschine bestimmt, der Drehzahlen im Bereich von 130.000/min erreichen kann.The support disc shown in Figure 1 is intended for the rotor of an open-end spinning machine, which can reach speeds in the range of 130,000 / min.
Die Stützscheibe besteht aus einem Nabenring 1 aus polymerem Werkstoff, der von rotationssymmetrischer Gestalt ist und in radialer Richtung außenseitig ein I-förmiges Profil aufweist.The support disk consists of a
Der Nabenring 1 besteht in diesem Beispiel aus Polyharnstoff und weist einen Elastizitätsmodul von 10000 N/mm² auf, eine Wärmeformbeständigkeit von 200° C und eine Bruchdehnung von 2,5 %.The
Der Nabenring 1 ist der Rotationsachse 9 der Stützscheibe im wesentlichen senkrecht zugeordnet. Er ist im mittleren Bereich seines I-förmigen Profils, innerhalb der radialen Erstreckung von gleichmäßig in Umfangsrichtung verteilten Durchbrechungen 4, in diesem speziellen Fall in Form von Bohrungen, axial durchdrungen (Figuren 1, 3, 4).The
Der Stützring 3 besteht aus elastomerem Polyurethan, welches unmittelbar an den Nabenring 1 angeformt ist. Der Stützring 3 hat ein im wesentlichen U-förmiges Profil, welches das I-förmige Profil des Nabenringes 1 mit radial nach innen vorstehenden Schenkeln 2 umschließt.The
Die Schenkel 2 sind dabei durch die Durchbrechungen 4 des Nabenringes 1 hindurch ineinander übergehend verbunden, wodurch der Stützring 3 nicht nur in adhäsiver Weise an dem Nabenring 1 festgelegt ist, sondern zusätzlich aufgrund einer gegenseitigen, formschlüssigen Umschließung bzw. Durchdringung der Profile (Figur 1, Figur 3). Auch bei höchsten Drehzahlen ist hierdurch eine fliehkraftbedingte Ablösung des Stützringes 3 von dem Nabenring 1 nicht zu befürchten.The
In Figur 4 ist bezug genommen auf eine Ausführung, bei der der Nabenring 1 im Bereich seines Innenumfanges mit einer in radialer Richtung beweglichen Haltekralle 5 versehen ist, wobei die Haltekralle 5 in einer radial nach außen offenen Nut 6 einer zur Anwendung gelangenden Antriebswelle 7 eingeschnappt ist. Die axiale Festlegung des Nabenringes 1 auf der Antriebswelle 7 ist dadurch vereinfacht.In FIG. 4, reference is made to an embodiment in which the
Eine weitere Ausgestaltung, die hier nicht näher gezeigt ist, kann darin bestehen, daß zusätzlich zu der in radialer Richtung beweglichen Haltekralle eine Nabenring-Wellenverbindung vorgesehen ist, die ein polygonförmiges Profil oder eine Keilverzahnung aufweist. Eine zusätzliche Sicherung in Umfangsrichtung ist dadurch gewährleistet.A further embodiment, which is not shown in more detail here, can consist in that in addition to the holding claw which is movable in the radial direction, a hub ring shaft connection is provided which has a polygonal profile or a spline. This ensures additional security in the circumferential direction.
Neben einer besonders guten, rotationssymmetrischen Festlegung des Stützringes 3 auf dem Nabenring 1 zeichnet sich die erfindungsgemäße Stützscheibe durch einfache Produktion, geringe Herstellungskosten, nicht feststellbare Unwuchterscheinungen über den gesamten Drehzahlbereich und insgesamt durch gute Gebrauchseigenschaften aus.In addition to a particularly good, rotationally symmetrical fixing of the
Claims (8)
- A support disc for a rotor of an open-end spinning machine, comprising a hub ring (1) and a support ring (3) of elastomeric material fixed on the outer circumference of the said hub ring, the hub ring (1) consisting of a polymeric material, characterized in that the hub ring (1) consists of a polymeric material which has a modulus of elasticity of from 7000 to 13,000 N/mm², a heat resistance of from 150 to 250°C and an elongation at break of from 1.3 to 3%, and in that the hub ring (1) is provided in the region of its inner circumference with at least one radially movable retaining claw (5) and can be snapped by means of the retaining claw (5) into a radially outwardly opening groove (6) of an operational drive shaft (7).
- A support disc according to claim 1, characterized in that the hub ring (1) has in the region of its inner circumference at least one groove which is arranged transversely with respect to the circumferential direction and can be brought into engagement with at least one projection of the drive shaft (7).
- A support disc according to either of claims 1 and 2, characterized in that the hub ring (1) has an I-shaped profile, in the region of its radially outer limitation, in that the support ring (3) has a U-shaped profile and in that the U-shaped profile of the support ring (3) reaches on both sides around the I-shaped profile of the hub ring (1) by radially inwardly projecting legs (2).
- A support disc according to claim 3, characterized in that the I-profile of the hub ring (1) is penetrated by openings (4) distributed uniformly in the circumferential direction and in that the legs (2) of the U-shaped profile of the support ring (3) are designed such that they merge one with the other in one piece through the openings (4).
- A support disc according to any of claims 1 to 4, characterized in that the hub ring (1) consists of polyurea.
- A support disc according to any of claims 1 to 4, characterized in that the hub ring (1) consists of thermosetting polyurethane.
- A support disc according to any of claims 1 to 6, characterized in that the hub ring (1) has a signal transmitter in at least a subregion of its axial limiting surfaces (10).
- A support disc according to claim 7, characterized in that the signal transmitter is formed by a light-reflecting foil and in that the foil is adhesively fixed on the hub ring (1).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4136793 | 1991-11-08 | ||
DE4136793A DE4136793C1 (en) | 1991-11-08 | 1991-11-08 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0540818A1 EP0540818A1 (en) | 1993-05-12 |
EP0540818B1 true EP0540818B1 (en) | 1995-09-27 |
Family
ID=6444365
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92110026A Expired - Lifetime EP0540818B1 (en) | 1991-11-08 | 1992-06-15 | Support disc |
Country Status (6)
Country | Link |
---|---|
US (1) | US5362160A (en) |
EP (1) | EP0540818B1 (en) |
DE (2) | DE4136793C1 (en) |
ES (1) | ES2078591T3 (en) |
GR (1) | GR3018264T3 (en) |
TR (1) | TR26381A (en) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19511000C2 (en) * | 1995-03-25 | 1998-10-22 | Freudenberg Carl Fa | Support disc |
US5675964A (en) * | 1993-04-27 | 1997-10-14 | Fritz Stahlecker | Open end spinning supporting disk with asymmetric magnetic rotational speed indicator |
DE4334985B4 (en) * | 1993-10-14 | 2005-12-29 | Stahlecker, Fritz | Support disk for a support disk bearing of an OE spinning rotor and method for producing this support disk |
DE4437182C1 (en) * | 1994-10-18 | 1995-11-02 | Freudenberg Carl Fa | Simply, cost-effectively mfd. wheel for texturising yarn in spinning |
DE19549466C2 (en) * | 1995-03-25 | 1999-10-14 | Rieter Ingolstadt Spinnerei | Support disc |
DE19712916A1 (en) * | 1997-03-27 | 1998-10-01 | Novibra Gmbh | Support disc for open-ended spinning rotor |
DE19756711C2 (en) * | 1997-12-19 | 2001-07-19 | Schlafhorst & Co W | Support disc bearing for an open-end spinning rotor |
DE19804868C2 (en) * | 1998-02-09 | 2000-06-21 | Freudenberg Carl Fa | Support disc |
DE29806031U1 (en) * | 1998-04-02 | 1998-06-25 | Legrom, Friedrich, 71540 Murrhardt | Side disc for support disc bearing of a rotor spinning machine |
DE19908922B4 (en) * | 1999-03-02 | 2007-04-19 | Carl Freudenberg Kg | Support disk for the bearing of a rotor |
DE10039121B4 (en) * | 2000-08-07 | 2007-04-12 | Carl Freudenberg Kg | Support disk for the bearing of a rotor |
GB0222480D0 (en) | 2002-09-27 | 2002-11-06 | Ricardo Consulting Eng | Torsionally damped rotary shafts |
US7073474B2 (en) * | 2003-11-06 | 2006-07-11 | Brp Us Inc. | Flywheel with torsional dampening ring |
EP1788128B1 (en) | 2005-11-22 | 2008-01-09 | Carl Freudenberg KG | Support disk |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3615777A1 (en) * | 1986-05-10 | 1987-11-12 | Stahlecker Fritz | SUPPORT DISC FOR A SUPPORT DISC BEARING OF A OE SPINNING ROTOR |
DE3630257C2 (en) * | 1986-09-05 | 1995-10-12 | Schlafhorst & Co W | Support disc for the rotor shaft of an OE spinning machine |
DE3719445A1 (en) * | 1987-06-11 | 1988-12-22 | Fritz Stahlecker | SUPPORT DISC FOR A SUPPORT DISC BEARING |
US4893947A (en) * | 1989-01-23 | 1990-01-16 | Hurley Robert E | Spinning machine rotor shaft disk |
US4893946A (en) * | 1989-05-15 | 1990-01-16 | Amkor Industries, Inc. | Roller for spinning frame |
DE4011632A1 (en) * | 1990-04-11 | 1991-10-17 | Fritz Stahlecker | Support discs for OE rotor - has increased surface contact between metal disc and synthetic ring |
DE4019028A1 (en) * | 1990-06-14 | 1991-12-19 | Schurr Stahlecker & Grill | Open=end spinning rotor with reduced vibration - has driving discs with dovetailed groove and pref. rings fitting tightly in groove, for high speed |
DE4136794A1 (en) * | 1991-11-08 | 1993-05-19 | Freudenberg Carl Fa | SUPPORT DISC |
-
1991
- 1991-11-08 DE DE4136793A patent/DE4136793C1/de not_active Expired - Lifetime
-
1992
- 1992-06-15 ES ES92110026T patent/ES2078591T3/en not_active Expired - Lifetime
- 1992-06-15 EP EP92110026A patent/EP0540818B1/en not_active Expired - Lifetime
- 1992-06-15 DE DE59203830T patent/DE59203830D1/en not_active Expired - Lifetime
- 1992-08-24 US US07/934,141 patent/US5362160A/en not_active Expired - Fee Related
- 1992-09-04 TR TR92/0872A patent/TR26381A/en unknown
-
1995
- 1995-11-30 GR GR950403381T patent/GR3018264T3/en unknown
Also Published As
Publication number | Publication date |
---|---|
DE59203830D1 (en) | 1995-11-02 |
GR3018264T3 (en) | 1996-02-29 |
ES2078591T3 (en) | 1995-12-16 |
EP0540818A1 (en) | 1993-05-12 |
TR26381A (en) | 1995-03-15 |
US5362160A (en) | 1994-11-08 |
DE4136793C1 (en) | 1993-06-03 |
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