WO2000066914A1 - Dispositif de conversion d'un mouvement rotatif en un mouvement lineaire - Google Patents

Dispositif de conversion d'un mouvement rotatif en un mouvement lineaire Download PDF

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Publication number
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
Authority
WO
WIPO (PCT)
Prior art keywords
nut
threaded spindle
cage
rollers
converting
Prior art date
Application number
PCT/EP2000/002460
Other languages
German (de)
English (en)
Inventor
Alexander Zernickel
Jürgen Hartmann
Original Assignee
INA Wälzlager Schaeffler oHG
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 INA Wälzlager Schaeffler oHG filed Critical INA Wälzlager Schaeffler oHG
Publication of WO2000066914A1 publication Critical patent/WO2000066914A1/fr

Links

Classifications

    • 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.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

Dispositif de conversion d'un mouvement rotatif en un mouvement axial, qui comporte une broche filetée (1), un écrou (3), rotatif autour de ladite broche, entourant cette dernière de manière concentrique avec un écart radial, et un certain nombre de rouleaux rotatifs (2) placés dans l'écart radial et guidés par une cage (4). Chaque rouleau présente un profil formé de rainures circulaires (2) à l'aide desquelles il s'engrène aussi bien avec le filetage extérieur (17) de la broche filetée (1) qu'avec le filetage interne correspondant (18) de l'écrou (3). Selon la présente invention, la cage (4) est guidée à l'intérieur de l'écrou (3) par au moins un cylindre de guidage (7), parallèle à l'axe de la broche filetée (1), qui se trouve en liaison de mouvement avec l'écrou (3).
PCT/EP2000/002460 1999-04-29 2000-03-21 Dispositif de conversion d'un mouvement rotatif en un mouvement lineaire WO2000066914A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19919566.8 1999-04-29
DE1999119566 DE19919566A1 (de) 1999-04-29 1999-04-29 Vorrichtung zur Umwandlung einer Drehbewegung in eine geradlinige Bewegung

Publications (1)

Publication Number Publication Date
WO2000066914A1 true WO2000066914A1 (fr) 2000-11-09

Family

ID=7906320

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2000/002460 WO2000066914A1 (fr) 1999-04-29 2000-03-21 Dispositif de conversion d'un mouvement rotatif en un mouvement lineaire

Country Status (2)

Country Link
DE (1) DE19919566A1 (fr)
WO (1) WO2000066914A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2613138C1 (ru) * 2015-10-01 2017-03-15 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Московский автомобильно-дорожный государственный технический университет (МАДИ)" Планетарная роликовинтовая передача
CN107725880A (zh) * 2017-11-23 2018-02-23 淄博沃泰斯石化设备有限公司 一种滚柱顶压机构

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007009122B4 (de) * 2007-02-24 2008-12-04 Wilhelm Narr Gmbh & Co. Kg Vorrichtung zur Umwandlung einer Drehbewegung in eine Axialbewegung
EP2784350B1 (fr) * 2013-03-25 2018-07-11 Aktiebolaget SKF Vis à rouleaux
US9267587B2 (en) 2014-03-25 2016-02-23 Aktiebolaget Skf Roller screw

Citations (6)

* Cited by examiner, † Cited by third party
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 (de) * 1968-06-27 1970-01-08 Skf Svenska Kullagerfab Ab Vorrichtung zur Umwandlung einer Drehbewegung in eine geradlinige Bewegung
US4037893A (en) * 1975-01-21 1977-07-26 La Technique Integrale Rolling-contact bearings with threaded or grooved planet rollers
EP0229744A1 (fr) * 1986-01-08 1987-07-22 Gsa Ag Systèmes vis écrou à rouleaux
DE4114082A1 (de) * 1991-02-21 1992-08-27 Schaeffler Waelzlager Kg Rollengewindetrieb
DE19646339A1 (de) 1996-11-09 1998-05-14 Schaeffler Waelzlager Ohg Vorrichtung zur Umwandlung einer Drehbewegung in eine Axialbewegung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1435037A (fr) * 1965-02-24 1966-04-15 Rhone Poulenc Sa Nouvel appareil de solidification
DE2540348C2 (de) * 1975-09-10 1983-08-11 Otto Nußbaum GmbH & Co KG, 7640 Kehl Reibungsarme Bewegungsmutter, insbesondere zum Heben von Lasten
CA1058909A (fr) * 1976-05-03 1979-07-24 Illinois Tool Works Inc. Convertisseur de mouvement tournante en mouvement lineaire
DE4115482A1 (de) * 1991-05-11 1992-11-12 Schaeffler Waelzlager Kg Linearfuehrungseinheit
DE4115758C2 (de) * 1991-05-15 1999-06-24 Schaeffler Waelzlager Ohg Wälzschraubtrieb
US5370012A (en) * 1993-03-08 1994-12-06 Stanley; Richard B. Linear actuation roller bearing nut

Patent Citations (6)

* Cited by examiner, † Cited by third party
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 (de) * 1968-06-27 1970-01-08 Skf Svenska Kullagerfab Ab Vorrichtung zur Umwandlung einer Drehbewegung in eine geradlinige Bewegung
US4037893A (en) * 1975-01-21 1977-07-26 La Technique Integrale Rolling-contact bearings with threaded or grooved planet rollers
EP0229744A1 (fr) * 1986-01-08 1987-07-22 Gsa Ag Systèmes vis écrou à rouleaux
DE4114082A1 (de) * 1991-02-21 1992-08-27 Schaeffler Waelzlager Kg Rollengewindetrieb
DE19646339A1 (de) 1996-11-09 1998-05-14 Schaeffler Waelzlager Ohg Vorrichtung zur Umwandlung einer Drehbewegung in eine Axialbewegung

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2613138C1 (ru) * 2015-10-01 2017-03-15 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Московский автомобильно-дорожный государственный технический университет (МАДИ)" Планетарная роликовинтовая передача
CN107725880A (zh) * 2017-11-23 2018-02-23 淄博沃泰斯石化设备有限公司 一种滚柱顶压机构
CN107725880B (zh) * 2017-11-23 2024-03-19 淄博沃泰斯石化设备有限公司 一种滚柱顶压机构

Also Published As

Publication number Publication date
DE19919566A1 (de) 2000-11-02

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