WO2000066914A1 - Device for converting a rotation into a rectilinear movement - Google Patents
Device for converting a rotation into a rectilinear movement Download PDFInfo
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- WO2000066914A1 WO2000066914A1 PCT/EP2000/002460 EP0002460W WO0066914A1 WO 2000066914 A1 WO2000066914 A1 WO 2000066914A1 EP 0002460 W EP0002460 W EP 0002460W WO 0066914 A1 WO0066914 A1 WO 0066914A1
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- WIPO (PCT)
- Prior art keywords
- nut
- threaded spindle
- cage
- rollers
- converting
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Classifications
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- 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
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
- F16H25/2247—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with rollers
- F16H25/2252—Planetary rollers between nut and screw
Definitions
- the invention relates to a device for converting a rotary movement into an axial movement, with a threaded spindle, a nut concentrically surrounding it with a radial distance, which can be rotated with respect to the threaded spindle, and with a number of circumferential rollers arranged at a distance and guided by a cage , each having a profile with circular grooves, with which they are in engagement with both the external thread of the threaded spindle and with a corresponding internal thread of the nut.
- roller screw drives of this type for converting a rotary movement into a translatory movement is, for example, brake systems of motor vehicles.
- the threaded spindle is provided for the transmission of a high axial force with a small pitch of the threaded spindle.
- Such a roller screw drive is known from the publication DE 196 46 339 A1, in which each rotating roller is axially displaced in relation to the threaded spindle within the cage by the pitch of the thread during one revolution of the nut.
- each roller is returned to the starting position within an axial groove of the nut by a cam arranged in each case in the vicinity of an end face of the cage.
- a cam which is referred to as a “hopper”, because of the necessity to prepare the groove and the cams, see, an increased manufacturing effort before, so that there is an expensive construction in which a reduction in efficiency is expected due to the return of the rollers.
- roller screw drive with a limited stroke is sufficient, in which the rollers can move axially in the nut until they hit a shelf formed at the end of the nut.
- the object of the invention is to create a roller screw drive which can be produced cost-effectively, the rollers of which can move in a defined manner axially and in the circumferential direction.
- the cage is guided within the nut by at least one guide roller which is axially parallel to the threaded spindle and which is in motional connection with the nut.
- the object is achieved in that the cage has an external toothing and the nut has an internal toothing, with several gears arranged one after the other in the circumferential direction of the nut at intervals between the threaded spindle and the nut, each of which can be rotated on a stationary shaft are stored and are in engagement with the external teeth of the cage and the internal teeth of the nut.
- the cage is forced to rotate via the guide roller or via the toothed wheels, which rotary motion passes on to the rotating rollers.
- the movement of the rotating rollers in the mother is thus determined by the cage.
- FIG. 1 shows a first device according to the invention in a longitudinal section
- FIG. 2 shows a cross section through the nut and the cage of the device according to FIG. 1;
- Figure 3 is an enlarged view of section III of the figure
- Figure 4 shows a second device according to the invention in one
- FIG. 5 shows a third device according to the invention in a longitudinal section. Detailed description of the drawing
- the device according to the invention shown in FIGS. 1 to 3 for converting a rotary movement into an axial movement consists of a threaded spindle 1 which is surrounded on the circumference by a plurality of rotating rollers 2 arranged one behind the other at intervals.
- the rollers 2 are arranged axially parallel to the threaded spindle 1 and have a profile with which they engage both with the external thread of the threaded spindle 1 and with the internal thread of a nut 3, which is arranged concentrically with the threaded spindle 1 and surrounds them at a distance corresponding to the diameter of the rollers 2.
- the revolving rollers 2 are guided by a cage 4 which has receiving pockets 5 for the revolving rollers 2 in the form of bores which are axially parallel to the threaded spindle 1.
- the cage 4 has axially parallel receiving bores 6, which are likewise arranged in the cage 4 offset by 120 ° to each other.
- a receiving bore 6 is located between two receiving pockets 5.
- a guide roller 7 is arranged, which is provided with gear wheels 8 at both ends. According to the invention, these gearwheels 8 located outside the cage 4 are connected to the nut 3 in terms of movement.
- the gear 8 arranged at the left end of the guide roller 7 in FIG. 1 engages in an internal ring gear 9 of the nut 3, which is formed on a shelf 10 of the nut 3 at its left end.
- a toothed ring 11 is inserted into the nut, which is held axially by a rim 12 of the nut formed here.
- the toothed ring 11 also has an internal toothed ring 13, in which the toothed wheel 8 formed at the right end of each guide roller 7 engages.
- the gears 8 of the guide rollers 7 also engage in external toothed rings 14, which are formed on fixed rings 15.
- Each ring 15 is in one Device for converting the rotary movement into the housing 16 absorbing the axial movement fastens and surrounds the threaded spindle 1.
- the circumferential rollers 2 have circular grooves on the circumference with which they engage with the external thread 17 of the threaded spindle 1 and with the internal thread 18 of the nut 3 are engaged.
- the device shown in Figure 4 is constructed similarly, so that the same reference numerals are used for corresponding identical parts.
- This device differs from the device shown in Figures 1 to 3 in that the revolving rollers 19 have axial bores 20 in which the guide rollers 7 are received. To reduce the friction, each guide roller 7 is surrounded by a sliding bush 21, which is also located in the bore 20 of the associated roller 19.
- the device shown in FIG. 5 has gear wheels 22, by means of which the cage 23 is set in rotation by the nut 24 around the threaded spindle 1, which do not run around the threaded spindle 1 in the manner of a plane, but are mounted on stationary shafts 25 held by the housing 16 .
- the nut 24 engages with the internal teeth 26 in the gears 22. These are which also engage with an external toothing 27 of the cage 23.
- the rotating rollers 28, which engage with their circular grooves both in the internal thread 29 of the nut 24 and in the external thread 17 of the threaded spindle 1, are located in pockets 30 of the cage 23. You can here an axial path corresponding to the length of the pockets 30 return.
- a defined cage speed is generated by the nut 3 and the nut 24, which is set due to the toothing. Since this cage speed is thus predetermined, an uncontrolled movement of the rotating rollers 2, 19 and 28 in the circumferential direction and in the axial direction is prevented.
- the guide rollers 7 are arranged in the bores 20 of the rotating rollers 19, more guide rollers 7 can be accommodated because of this type of arrangement. As a result, the basic load rating in the same installation space is greater than in the embodiment according to FIGS. 1 to 3.
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Abstract
Description
Vorrichtung zur Umwandlung einer Drehbewegung in eine geradlinige Device for converting a rotary movement into a straight line
BewegungMove
Beschreibungdescription
Gebiet der ErfindungField of the Invention
Die Erfindung betrifft eine Vorrichtung zur Umwandlung einer Drehbewegung in eine Axialbewegung, mit einer Gewindespindel, einer diese mit einem radialen Abstand konzentrisch umgebenden Mutter, die gegenüber der Gewindespindel verdrehbar ist, und mit einer Anzahl in dem Abstand angeordneter, von einem Käfig geführter, umlaufender Rollen, die jeweils ein Profil mit kreisförmigen Rillen aufweisen, mit welchem sie sich sowohl mit dem Außengewinde der Gewindespindel als auch mit einem entsprechenden Innengewinde der Mutter im Eingriff befinden.The invention relates to a device for converting a rotary movement into an axial movement, with a threaded spindle, a nut concentrically surrounding it with a radial distance, which can be rotated with respect to the threaded spindle, and with a number of circumferential rollers arranged at a distance and guided by a cage , each having a profile with circular grooves, with which they are in engagement with both the external thread of the threaded spindle and with a corresponding internal thread of the nut.
Hintergrund der ErfindungBackground of the Invention
Ein Anwendungsgebiet derartiger Rollengewindetriebe zur Umwandlung einer rotatorischen Bewegung in eine translatorische Bewegung sind beispielsweise Bremsanlagen von Kraftfahrzeugen. Dort ist die Gewindespindel für die Über- tragung einer hohen Axialkraft bei geringer Steigung der Gewindespiπdel vorgesehen. Aus der Veröffentlichung DE 196 46 339 A1 ist ein solches Rollenschraubgetriebe bekannt, bei welchem jede umlaufende Rolle während einer Umdrehung der Mutter im Verhältnis zu der Gewindespindel innerhalb des Käfigs um das Steigungsmaß des Gewindes axial verschoben wird. Am Ende ei- ner solchen Umdrehung wird jede Rolle innerhalb einer axialen Nut der Mutter von einem jeweils in der Nähe einer Stirnseite des Käfigs angeordneten Nokken in die Ausgangsstellung zurückgeführt. Bei dieser mit „Hüpfer" bezeichneten Ausführung liegt wegen der Notwendigkeit, die Nut und die Nocken vorzu- sehen, ein erhöhter Herstellungsaufwand vor, so daß sich eine teuere Konstruktion ergibt, bei der infolge der Rückführung der Rollen eine Verringerung des Wirkungsgrades zu erwarten ist.One area of application for roller screw drives of this type for converting a rotary movement into a translatory movement is, for example, brake systems of motor vehicles. There, the threaded spindle is provided for the transmission of a high axial force with a small pitch of the threaded spindle. Such a roller screw drive is known from the publication DE 196 46 339 A1, in which each rotating roller is axially displaced in relation to the threaded spindle within the cage by the pitch of the thread during one revolution of the nut. At the end of such a rotation, each roller is returned to the starting position within an axial groove of the nut by a cam arranged in each case in the vicinity of an end face of the cage. In this version, which is referred to as a “hopper”, because of the necessity to prepare the groove and the cams, see, an increased manufacturing effort before, so that there is an expensive construction in which a reduction in efficiency is expected due to the return of the rollers.
Bei manchen Anwendungsfällen ist jedoch eine Rückführung der umlaufenden Rollen nicht erforderlich. Oft genügt ein Rollengewindetrieb mit begrenztem Hub, bei dem die Rollen sich in der Mutter axial bewegen können, bis sie an einem am Ende der Mutter ausgebildeten Bord anstoßen.In some applications, however, it is not necessary to return the rotating rollers. Often, a roller screw drive with a limited stroke is sufficient, in which the rollers can move axially in the nut until they hit a shelf formed at the end of the nut.
Zusammenfassung der ErfindungSummary of the invention
Der Erfindung liegt die Aufgabe zugrunde, einen kostengünstig herstellbaren Rollengewindetrieb zu schaffen, dessen Rollen sich definiert axial und in Um- fangsrichtung bewegen können.The object of the invention is to create a roller screw drive which can be produced cost-effectively, the rollers of which can move in a defined manner axially and in the circumferential direction.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß der Käfig innerhalb der Mutter von mindestens einer zu der Gewindespindel achsparallelen Führungsrolle geführt ist, die sich mit der Mutter in bewegungsmäßiger Verbindung befindet. Nach einem weiteren Vorschlag wird die Aufgabe erfindungsgemäß dadurch gelöst, daß der Käfig eine Außenverzahnung und die Mutter eine Innenverzahnung aufweist, wobei zwischen der Gewindespindel und der Mutter mehrere in Umfangsrichtung der Mutter in Abständen hintereinander angeordnete Zahnräder angeordnet sind, die jeweils an einer ortsfesten Welle drehbar gelagert sind und sich mit der Außenverzahnung des Käfigs und der Innenver- zahnung der Mutter im Eingriff befinden.This object is achieved in that the cage is guided within the nut by at least one guide roller which is axially parallel to the threaded spindle and which is in motional connection with the nut. According to a further proposal, the object is achieved in that the cage has an external toothing and the nut has an internal toothing, with several gears arranged one after the other in the circumferential direction of the nut at intervals between the threaded spindle and the nut, each of which can be rotated on a stationary shaft are stored and are in engagement with the external teeth of the cage and the internal teeth of the nut.
Durch diese erfindungsgemäßen Maßnahmen wird bei beispielsweise nicht drehbarer Gewindespindel und angetriebener Mutter dem Käfig über die Führungsrolle oder über die Zahnräder eine Drehbewegung aufgezwungen, die dieser an die umlaufenden Rollen weitergibt. Die Bewegung der umlaufenden Rollen in der Mutter wird also von dem Käfig bestimmt.By means of these measures according to the invention, for example in the case of a non-rotatable threaded spindle and driven nut, the cage is forced to rotate via the guide roller or via the toothed wheels, which rotary motion passes on to the rotating rollers. The movement of the rotating rollers in the mother is thus determined by the cage.
Wären die umlaufenden Rollen nicht von einem definiert angetriebenen Käfig geführt, so würden sie sich bei z. B. einer Umdrehung der Mutter um ein bestimmtes Maß, z. B. 1 ,0 mm, in Figur 1 axial nach links bewegen. Bei einer Bewegungsumkehr der Mutter träte dann das Problem auf, daß bei einer Umdrehung der Mutter in der anderen Richtung, um die Rollen in ihrer Ausgangs- läge zurückzubringen, die Rollen sich infolge von Schlupf möglicherweise nur um 0,8 mm axial nach rechts bewegten. Auf diese Weise könnten sich die Rollen im Laufe der Zeit zu einem am linken Ende der Mutter ausgebildeten Bord hin bewegen, was zu einem Verklemmen der gesamten Vorrichtungseinheit führen würde. Solche Erscheinungen werden durch die erfindungsgemäße Anordnung verhindert. Ein zwischen den Rollen und der Mutter auftretender Schlupf kann sich wegen der exakten Führung des angetriebenen Käfigs nicht nachteilig auswirken.If the rotating rollers were not from a defined driven cage out, so they would at z. B. a rotation of the nut by a certain amount, for. B. 1, 0 mm, move axially to the left in Figure 1. When the mother reversed movement, the problem would then arise that if the mother rotated in the other direction to bring the rollers back to their original position, the rollers might only move axially to the right by 0.8 mm due to slippage. In this way, the rollers could move over time to a shelf formed on the left end of the nut, which would result in jamming of the entire device unit. Such phenomena are prevented by the arrangement according to the invention. A slip occurring between the rollers and the nut cannot have an adverse effect because of the precise guidance of the driven cage.
Kurze Beschreibung der ZeichnungBrief description of the drawing
Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und werden im folgenden näher beschrieben. Es zeigen:Embodiments of the invention are shown in the drawing and are described in more detail below. Show it:
Figur 1 eine erste erfindungsgemäße Vorrichtung in einem Längs- schnitt;1 shows a first device according to the invention in a longitudinal section;
Figur 2 einen Querschnitt durch die Mutter und den Käfig der Vorrichtung nach Figur 1 ;FIG. 2 shows a cross section through the nut and the cage of the device according to FIG. 1;
Figur 3 eine vergrößerte Darstellung des Ausschnitts III der FigurFigure 3 is an enlarged view of section III of the figure
1 ;1 ;
Figur 4 eine zweite erfindungsgemäße Vorrichtung in einemFigure 4 shows a second device according to the invention in one
Längsschnitt;Longitudinal section;
Figur 5 eine dritte erfindungsgemäße Vorrichtung in einem Längsschnitt. Ausführliche Beschreibung der ZeichnungFigure 5 shows a third device according to the invention in a longitudinal section. Detailed description of the drawing
Die in den Figuren 1 bis 3 dargestellte erfindungsgemäße Vorrichtung zur Umwandlung einer Drehbewegung in eine Axialbewegung besteht aus einer Ge- windespindel 1 , die am Umfang von mehreren in Abständen hintereinander angeordneten umlaufenden Rollen 2 umgeben ist. Die Rollen 2 sind zu der Gewindespindel 1 achsparallel angeordnet und weisen eine Profilierung auf, mit welcher sie sich sowohl mit dem Außengewinde der Gewindespindel 1 als auch mit dem Innengewinde einer Mutter 3 im Eingriff befinden, die konzen- trisch zu der Gewindespindel 1 angeordnet ist und diese in einem dem Durchmesser der Rollen 2 entsprechenden Abstand umgibt.The device according to the invention shown in FIGS. 1 to 3 for converting a rotary movement into an axial movement consists of a threaded spindle 1 which is surrounded on the circumference by a plurality of rotating rollers 2 arranged one behind the other at intervals. The rollers 2 are arranged axially parallel to the threaded spindle 1 and have a profile with which they engage both with the external thread of the threaded spindle 1 and with the internal thread of a nut 3, which is arranged concentrically with the threaded spindle 1 and surrounds them at a distance corresponding to the diameter of the rollers 2.
In dem ringförmigen Zwischenraum zwischen der Gewindespindel 1 und der Mutter 3 sind die umlaufenden Rollen 2 von einem Käfig 4 geführt, welcher Aufnahmetaschen 5 für die umlaufenden Rollen 2 in Form von zur Gewindespindel 1 achsparallelen Bohrungen aufweist. Im Ausführungsbeispiel sind drei zueinander jeweils um 120° versetzt angeordnete Aufnahmetaschen 5 vorgesehen. Außerdem weist der Käfig 4 achsparallele Aufnahmebohrungen 6 auf, die ebenfalls um jeweils 120° zueinander versetzt im Käfig 4 angeordnet sind. Eine Aufnahmebohrung 6 befindet sich jeweils zwischen zwei Aufnahmetaschen 5. In jeder Aufnahmebohrung 6 ist eine Führungsrolle 7 angeordnet, die an ihren beiden Enden mit Zahnrädern 8 versehen ist. Diese außerhalb des Käfigs 4 befindlichen Zahnräder 8 sind erfindungsgemäß bewegungsmäßig mit der Mutter 3 verbunden. Das am linken Ende der Führungsrolle 7 in Figur 1 angeordnete Zahnrad 8 greift in einen Innenzahnkranz 9 der Mutter 3 ein, welcher an einem Bord 10 der Mutter 3 an deren linkem Ende ausgebildet ist. Am rechten Ende der Mutter 3 ist ein Zahnring 11 in die Mutter eingesetzt, welcher von einem hier ausgebildeten Bord 12 der Mutter axial gehalten wird. Der Zahnring 11 weist ebenfalls einen Innenzahnkranz 13 auf, in welchen das am rechten Ende jeder Führungsrolle 7 ausgebildete Zahnrad 8 eingreift.In the annular space between the threaded spindle 1 and the nut 3, the revolving rollers 2 are guided by a cage 4 which has receiving pockets 5 for the revolving rollers 2 in the form of bores which are axially parallel to the threaded spindle 1. In the exemplary embodiment, three receiving pockets 5, each offset by 120 ° , are provided. In addition, the cage 4 has axially parallel receiving bores 6, which are likewise arranged in the cage 4 offset by 120 ° to each other. A receiving bore 6 is located between two receiving pockets 5. In each receiving bore 6, a guide roller 7 is arranged, which is provided with gear wheels 8 at both ends. According to the invention, these gearwheels 8 located outside the cage 4 are connected to the nut 3 in terms of movement. The gear 8 arranged at the left end of the guide roller 7 in FIG. 1 engages in an internal ring gear 9 of the nut 3, which is formed on a shelf 10 of the nut 3 at its left end. At the right end of the nut 3, a toothed ring 11 is inserted into the nut, which is held axially by a rim 12 of the nut formed here. The toothed ring 11 also has an internal toothed ring 13, in which the toothed wheel 8 formed at the right end of each guide roller 7 engages.
Die Zahnräder 8 der Führungsrollen 7 greifen außerdem in Außenzahnkränzen 14 ein, die an festen Ringen 15 ausgebildet sind. Jeder Ring 15 ist in einem die Vorrichtung zur Umwandlung der Drehbewegung in die Axialbewegung aufnehmenden Gehäuse 16 befestigt und umgibt die Gewindespindel 1. Die umlaufenden Rollen 2 weisen am Umfang kreisförmige Rillen auf, mit denen sie sich mit dem Außengewinde 17 der Gewindespindel 1 und mit dem Innenge- winde 18 der Mutter 3 im Eingriff befinden.The gears 8 of the guide rollers 7 also engage in external toothed rings 14, which are formed on fixed rings 15. Each ring 15 is in one Device for converting the rotary movement into the housing 16 absorbing the axial movement fastens and surrounds the threaded spindle 1. The circumferential rollers 2 have circular grooves on the circumference with which they engage with the external thread 17 of the threaded spindle 1 and with the internal thread 18 of the nut 3 are engaged.
Bei einer Drehung der Mutter 3 um die undrehbar gehaltene Gewindespindel 1 umkreisen die umlaufenden Rollen 2 die Gewindespindel 1 wie Planeten. Sie werden außerdem von dem Käfig 4 bei ihrer Bewegung geführt. Infolge der Drehung der Mutter 3 werden über die Innenzahnkränze 9 und 13 die Führungsrollen 7 mit ihren Zahnrädern 8 angetrieben, wobei die Zahnräder 8 sich an den Außenzahnkränzen 14 der feststehenden Ringe 15 radial abstützen. Die Ringe 15 wirken dabei wie Sonnenräder. Mit den Führungsrollen 7 muß sich nun auch der Käfig 4 in Umfangsrichtung der Gewindespindel 1 bewegen, weil die Führungsrollen 7 sich in den Aufnahmebohrungen 6 des Käfigs 4 befinden. Die Maße der Bauteile der Vorrichtung sind aufeinander abgestimmt, so daß die Dreh- oder Umfangsbewegung der Mutter 3, des Käfigs 4, der Führungsrollen 7 und der umlaufenden Rollen 2 in Bezug auf die Gewindespindel 1 möglich ist.When the nut 3 rotates about the non-rotatably held threaded spindle 1, the rotating rollers 2 orbit the threaded spindle 1 like planets. They are also guided by the cage 4 as they move. As a result of the rotation of the nut 3, the guide rollers 7 with their toothed wheels 8 are driven via the inner toothed rings 9 and 13, the toothed wheels 8 being supported radially on the outer toothed rings 14 of the fixed rings 15. The rings 15 act like sun gears. With the guide rollers 7, the cage 4 must now also move in the circumferential direction of the threaded spindle 1, because the guide rollers 7 are located in the receiving bores 6 of the cage 4. The dimensions of the components of the device are matched to one another so that the rotational or circumferential movement of the nut 3, the cage 4, the guide rollers 7 and the rotating rollers 2 in relation to the threaded spindle 1 is possible.
Die in Figur 4 dargestellte Vorrichtung ist ähnlich aufgebaut, so daß für entsprechende gleiche Teile die selben Bezugszahlen verwendet sind. Diese Vorrichtung unterscheidet sich von der in den Figuren 1 bis 3 dargestellten Vorrichtung darin, daß die umlaufenden Rollen 19 axiale Bohrungen 20 aufweisen, in welchen die Führungsrollen 7 aufgenommen sind. Jede Führungsrolle 7 ist zur Reduzierung der Reibung von einer Gleitbuchse 21 umgeben, die sich ebenfalls in der Bohrung 20 der zugehörigen Rolle 19 befindet.The device shown in Figure 4 is constructed similarly, so that the same reference numerals are used for corresponding identical parts. This device differs from the device shown in Figures 1 to 3 in that the revolving rollers 19 have axial bores 20 in which the guide rollers 7 are received. To reduce the friction, each guide roller 7 is surrounded by a sliding bush 21, which is also located in the bore 20 of the associated roller 19.
Die in Figur 5 dargestellte Vorrichtung weist Zahnräder 22 auf, über welche der Käfig 23 von der Mutter 24 in Drehung um die Gewindespindel 1 versetzt wird, die nicht planentenförmig um die Gewindespindel 1 herumlaufen, sondern an von dem Gehäuse 16 gehaltenen ortsfesten Wellen 25 gelagert sind. Die Mutter 24 greift mit ihrer Innenverzahnung 26 in die Zahnräder 22 ein. Diese befin- den sich außerdem mit einer Außenverzahnung 27 des Käfigs 23 im Eingriff. Die umlaufenden Rollen 28, die mit ihren kreisförmigen Rillen sowohl in das Innengewinde 29 der Mutter 24 als auch in das Außengewinde 17 der Gewindespindel 1 eingreifen, befinden sich in Taschen 30 des Käfigs 23. Sie können hier einen axialen Weg entsprechend der Länge der Taschen 30 zurücklegen.The device shown in FIG. 5 has gear wheels 22, by means of which the cage 23 is set in rotation by the nut 24 around the threaded spindle 1, which do not run around the threaded spindle 1 in the manner of a plane, but are mounted on stationary shafts 25 held by the housing 16 . The nut 24 engages with the internal teeth 26 in the gears 22. These are which also engage with an external toothing 27 of the cage 23. The rotating rollers 28, which engage with their circular grooves both in the internal thread 29 of the nut 24 and in the external thread 17 of the threaded spindle 1, are located in pockets 30 of the cage 23. You can here an axial path corresponding to the length of the pockets 30 return.
Bei den erfindungsgemäßen Vorrichtungen wird jeweils von der Mutter 3 und der Mutter 24 eine definierte Käfigdrehzahl erzeugt, die sich aufgrund der Verzahnungen einstellt. Da diese Käfigdrehzahl somit vorgegeben ist, wird ein unkontrolliertes Bewegen der umlaufenden Rollen 2, 19 und 28 in Umfangs- richtung und in axialer Richtung verhindert. Bei der Ausführung gemäß Figur 4, bei der die Führungsrollen 7 in den Bohrungen 20 der umlaufenden Rollen 19 angeordnet sind, können wegen dieser Art der Anordnung mehr Führungsrollen 7 untergebracht werden. Demzufolge wird die Tragzahl auf gleichem Bauraum größer als bei der Ausführung nach den Figuren 1 bis 3. In the devices according to the invention, a defined cage speed is generated by the nut 3 and the nut 24, which is set due to the toothing. Since this cage speed is thus predetermined, an uncontrolled movement of the rotating rollers 2, 19 and 28 in the circumferential direction and in the axial direction is prevented. In the embodiment according to FIG. 4, in which the guide rollers 7 are arranged in the bores 20 of the rotating rollers 19, more guide rollers 7 can be accommodated because of this type of arrangement. As a result, the basic load rating in the same installation space is greater than in the embodiment according to FIGS. 1 to 3.
BezugszahlenlisteLIST OF REFERENCE NUMBERS
Gewindespindel umlaufende RolleLeading screw rotating roller
Muttermother
KäfigCage
AufnahmetaschePocket
AufnahmebohrungLocation hole
FührungsrolleLeadership role
Zahnradgear
InnenzahnkranzInternal ring gear
BordBoard
ZahnringGear ring
BordBoard
InnenzahnkranzInternal ring gear
AußenzahnkranzExternal ring gear
Ringring
Gehäusecasing
AußengewindeExternal thread
Innengewinde umlaufende RolleInternal thread rotating roller
Bohrungdrilling
GleitbuchseSliding bush
Zahnradgear
KäfigCage
Mutter ortsfeste WelleMother fixed shaft
InnenverzahnungInternal teeth
Außenverzahnung umlaufende RolleOuter gear rotating roller
Innengewindeinner thread
Tasche bag
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19919566.8 | 1999-04-29 | ||
| DE1999119566 DE19919566A1 (en) | 1999-04-29 | 1999-04-29 | Device for converting a rotary movement into a linear movement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2000066914A1 true WO2000066914A1 (en) | 2000-11-09 |
Family
ID=7906320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2000/002460 Ceased WO2000066914A1 (en) | 1999-04-29 | 2000-03-21 | Device for converting a rotation into a rectilinear movement |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE19919566A1 (en) |
| WO (1) | WO2000066914A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2613138C1 (en) * | 2015-10-01 | 2017-03-15 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Московский автомобильно-дорожный государственный технический университет (МАДИ)" | Orbital roller drive |
| CN107725880A (en) * | 2017-11-23 | 2018-02-23 | 淄博沃泰斯石化设备有限公司 | A kind of roller top-pressure mechanism |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007009122B4 (en) * | 2007-02-24 | 2008-12-04 | Wilhelm Narr Gmbh & Co. Kg | Device for converting a rotational movement into an axial movement |
| EP2784350B1 (en) * | 2013-03-25 | 2018-07-11 | Aktiebolaget SKF | Roller screw |
| US9267587B2 (en) | 2014-03-25 | 2016-02-23 | Aktiebolaget Skf | Roller screw |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3214991A (en) * | 1962-02-21 | 1965-11-02 | Tech Integrale | Mechanism for transforming a movement of rotation into a movement of translation |
| DE1931861A1 (en) * | 1968-06-27 | 1970-01-08 | Skf Svenska Kullagerfab Ab | Device for converting a rotary movement into a linear movement |
| US4037893A (en) * | 1975-01-21 | 1977-07-26 | La Technique Integrale | Rolling-contact bearings with threaded or grooved planet rollers |
| EP0229744A1 (en) * | 1986-01-08 | 1987-07-22 | Gsa Ag | Improvements in roller-thread mechanism |
| DE4114082A1 (en) * | 1991-02-21 | 1992-08-27 | Schaeffler Waelzlager Kg | Damping for spindle drive - is achieved by threaded damping element and pumped feed for damping fluid |
| DE19646339A1 (en) | 1996-11-09 | 1998-05-14 | Schaeffler Waelzlager Ohg | Device for converting a rotary movement into an axial movement |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1435037A (en) * | 1965-02-24 | 1966-04-15 | Rhone Poulenc Sa | New solidification apparatus |
| DE2540348C2 (en) * | 1975-09-10 | 1983-08-11 | Otto Nußbaum GmbH & Co KG, 7640 Kehl | Low-friction movement nut, especially for lifting loads |
| CA1058909A (en) * | 1976-05-03 | 1979-07-24 | Illinois Tool Works Inc. | Reversible rotary to linear motion converting device |
| DE4115482A1 (en) * | 1991-05-11 | 1992-11-12 | Schaeffler Waelzlager Kg | Linear guide unit with roller thread drive - has profiled outside of rollers engaging with spindle thread |
| DE4115758C2 (en) * | 1991-05-15 | 1999-06-24 | Schaeffler Waelzlager Ohg | Hobbing drive |
| US5370012A (en) * | 1993-03-08 | 1994-12-06 | Stanley; Richard B. | Linear actuation roller bearing nut |
-
1999
- 1999-04-29 DE DE1999119566 patent/DE19919566A1/en not_active Withdrawn
-
2000
- 2000-03-21 WO PCT/EP2000/002460 patent/WO2000066914A1/en not_active Ceased
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3214991A (en) * | 1962-02-21 | 1965-11-02 | Tech Integrale | Mechanism for transforming a movement of rotation into a movement of translation |
| DE1931861A1 (en) * | 1968-06-27 | 1970-01-08 | Skf Svenska Kullagerfab Ab | Device for converting a rotary movement into a linear movement |
| US4037893A (en) * | 1975-01-21 | 1977-07-26 | La Technique Integrale | Rolling-contact bearings with threaded or grooved planet rollers |
| EP0229744A1 (en) * | 1986-01-08 | 1987-07-22 | Gsa Ag | Improvements in roller-thread mechanism |
| DE4114082A1 (en) * | 1991-02-21 | 1992-08-27 | Schaeffler Waelzlager Kg | Damping for spindle drive - is achieved by threaded damping element and pumped feed for damping fluid |
| DE19646339A1 (en) | 1996-11-09 | 1998-05-14 | Schaeffler Waelzlager Ohg | Device for converting a rotary movement into an axial movement |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2613138C1 (en) * | 2015-10-01 | 2017-03-15 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Московский автомобильно-дорожный государственный технический университет (МАДИ)" | Orbital roller drive |
| CN107725880A (en) * | 2017-11-23 | 2018-02-23 | 淄博沃泰斯石化设备有限公司 | A kind of roller top-pressure mechanism |
| CN107725880B (en) * | 2017-11-23 | 2024-03-19 | 淄博沃泰斯石化设备有限公司 | Roller jacking mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19919566A1 (en) | 2000-11-02 |
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