WO2008106952A1 - Dispositif de palier pour l'amortissement de chocs et pour la compensation d'erreurs angulaires - Google Patents

Dispositif de palier pour l'amortissement de chocs et pour la compensation d'erreurs angulaires Download PDF

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Publication number
WO2008106952A1
WO2008106952A1 PCT/DE2008/000385 DE2008000385W WO2008106952A1 WO 2008106952 A1 WO2008106952 A1 WO 2008106952A1 DE 2008000385 W DE2008000385 W DE 2008000385W WO 2008106952 A1 WO2008106952 A1 WO 2008106952A1
Authority
WO
WIPO (PCT)
Prior art keywords
shape memory
bearing
component
bearing arrangement
arrangement according
Prior art date
Application number
PCT/DE2008/000385
Other languages
German (de)
English (en)
Inventor
Wolfgang Braun
Stefan GLÜCK
Sergej Schwarz
Jörg SPIELFELD
Original Assignee
Schaeffler Kg
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 Schaeffler Kg filed Critical Schaeffler Kg
Publication of WO2008106952A1 publication Critical patent/WO2008106952A1/fr

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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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
    • F16C23/06—Ball or roller bearings
    • F16C23/08—Ball or roller bearings self-adjusting
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
    • F16C27/04—Ball or roller bearings, e.g. with resilient rolling bodies
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/24—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly
    • F16C19/26—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly with a single row of rollers
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2202/00—Solid materials defined by their properties
    • F16C2202/20—Thermal properties
    • F16C2202/28—Shape memory material

Definitions

  • the invention relates to a bearing assembly for damping shocks and to compensate for angular errors of a stored component.
  • this storage can compensate for angular errors on a mounted shaft.
  • spherical roller bearings are known from the prior art, which are also suitable to compensate for tilting a mounted shaft.
  • a disadvantage of such spherical roller bearings is their relatively large space.
  • So-called shape memory alloys or memory-shape alloys which are frequently the subject of application-oriented materials research, are known from the prior art. They are characterized by the fact that, after suitable treatment due to a transformation from austenite to martensite, they change their shape as a function of the temperature or also of the pressure. In their low-temperature form, workpieces of such alloys can be permanently, that is apparently plastic, deformed while they return to their original shape when heated above the transition temperature. If these workpieces are cooled again, they can be plastically deformed again, but, if they are heated appropriately, return to their austenite state upon return of their microstructure macroscopic, original high-temperature form.
  • the one-way effect a material that has been deformed at a low temperature resumes its original shape when heated to a higher temperature. The material, to a certain extent, recalls its original shape during heating and retains it during subsequent cooling.
  • the two-way effect refers to the phenomenon in which the material is pronounced of its trained form both when the temperature is increased and when cooled, that is to say one mold at high temperature and another mold at low temperature.
  • pseudoelasticity is used when the conversion of austenite to martensite is not achieved mechanically by cooling but by mechanical shear in certain temperature ranges.
  • a pseudo-elastic material initially deforms elastically during loading, and only at a critical stress does a stress-induced transformation of austenite to martensite begin, which results in high elastic strain rates at constant stress. When unloaded, the material reverts to its original structure of martensite to austenite and the deformation returns quasi-elastically.
  • Shape memory alloys are also used in bearing arrangements to facilitate assembly operations or to keep the wear-related bearing clearance small.
  • DE 101 20 489 C2 describes a disk cage for a rolling bearing which consists at least partially of a shape memory or memory alloy which, depending on its temperature, allows the disk cage to assume two different geometrical configurations. The utilization of the memory effect is used to mount the disk cage in the rolling bearing.
  • DE 41 22 123 A1 describes a slide bearing with a support body and at least one bearing layer of this bearing as bearing parts. In order to improve such a bearing so that a noise attenuation occurs in the bearing and the noise emission is reduced overall, at least one of the bearing parts consists of a shape memory alloy.
  • a device for adjusting the axial clearance of skew bearings can be found in DE 197 34 998 B4.
  • a Anstellelement is arranged, which consists of a shape memory alloy.
  • the shape memory alloy As a result of the operating temperature of the angular rolling bearing, there is a structural transformation of the shape memory alloy and thus to a growth in length of the Anstellelements. In this way, the unavoidable wear in the storage during use is to be compensated for and the changed by the wear bearing clearance to the desired value.
  • a double-row roller bearing which has an axially divided guide ring between the inner races of the inner bearing ring, which consists of two partial rings.
  • the sub-rings are connected by a plurality of shape memory alloy existing intermediate pieces such that at any operating temperature by automatic changes in length of the intermediate pieces an approximately constant axial preload on the rollers of Rollenla- gers can be generated.
  • shape memory alloy a beta-nickel-titanium alloy having pseudoelasticity is preferably used as the shape memory property.
  • the object of the present invention is to provide a bearing assembly which provides for the uneven impact load and angular error of a stored component, in particular a stored
  • the bearing assembly should be manufactured and assembled with little effort and only need a slightly increased space compared to conventional bearings.
  • a shape memory component can be used, which consists of a shape memory alloy with pseudoelasticity (sometimes referred to as superelasticity) as a shape memory property.
  • the bearing arrangement according to the invention is characterized in that it comprises such a shape memory component arranged between a first bearing surface and the mounted component (preferably a mounted shaft).
  • An advantage of the solution according to the invention is that the use of a pseudoelastic shape memory alloy between the bearing and the shaft limits the maximum occurring stresses due to the elastic shape change of the shape memory component.
  • the component to be introduced does not reduce the contact surface.
  • the bearing capacity of the bearing is completely retained.
  • the elastic shape changes compensate for the current state of development Wellenverkippungen to about 0.1 °. This corresponds to the performance of the solutions with crowned ground track of the inner ring. However, it is quite conceivable that higher wave tilting can be achieved with future alloys.
  • the bearing is a roller bearing, which comprises an outer ring, an inner ring and arranged between outer ring and inner ring rolling elements.
  • the shape memory component is arranged in this embodiment between the shaft and inner ring.
  • the shape memory component can also be arranged between a housing component and a bearing surface arranged on the outer ring of a roller bearing.
  • the component is mounted with a predetermined bias.
  • the pseudoelastic material of the shape memory component is already subjected to a corresponding voltage.
  • the voltage to be applied for triggering the pseudoelastic effect is reduced by the amount of the bias voltage.
  • the shape memory alloy of the shape memory component is designed according to the expected operating temperatures.
  • the transformation of austenite to martensite takes place in a temperature range that depends very much on the composition of the alloy. By changing these alloy components, this temperature range can be specifically influenced and thereby adapted to the respective application.
  • the shape memory alloy for operating temperatures of about -15 ° C to about 120 0 C interpretable. With the currently known alloys, no conversion processes take place outside of these temperature limits. This also destroys the pseudo-elasticity property associated with these transformations. The arrangement would therefore only behave like a conventional storage. The indication of these temperature limits should not have any limiting effect. With future alloys quite different temperature ranges could be achieved.
  • the thickness of the shape memory component follows from the application.
  • the determining parameter is the expected permanent elastic elongation of the used Formgedambanislegtechnik. Taking into account this strain and a maximum required tilt, the necessary component thickness can be determined.
  • nickel-titanium alloy has proven to be particularly advantageous as a pseudoelastic shape memory alloy.
  • Nickel-titanium alloys have particularly good damping properties.
  • other alloys such as copper-zinc, copper-zinc-aluminum, copper-zinc-nickel and iron-nickel-aluminum can be used.
  • the annular shape memory element has a thickness of approximately 2 mm with a component width of approximately 15 mm to 25 mm. With such a design permanently elastic strains of about 2% can be achieved.
  • the required compression of the pseudoelastic alloy to compensate for peak stresses from 80% C r and a tilt of the shaft of 0.1 ° for a 2 mm thick ring made of a shape memory alloy is less than 2%. Thus, the use of a 2 mm thick ring is sufficient for such an application frame.
  • Fig. 1 is a partial view of a constructed as a rolling bearing according to the invention
  • Fig. 2 shows the bearing assembly according to the invention with a stored therein
  • FIG. 4 shows a stress-strain diagram of the pseudoelastic material of a shape memory component.
  • Fig. 1 shows a partial view of a bearing assembly according to the invention in the form of a rolling bearing.
  • the bearing arrangement comprises a ring-shaped shape memory component 01 made of a shape memory alloy with pseudoelasticity as shape memory property. Preferably, a nickel-titanium alloy is used as the alloy.
  • the shape memory component 01 is installed in a rolling bearing.
  • the rolling bearing consists of an outer ring 02, an inner ring 03 and between outer ring 02 and inner ring 03 disposed rolling elements 04.
  • the shape memory component 01 is located on the first bearing surface facing the component to be supported on the inner ring 03 of the roller bearing and is designed such that it rests on the inner ring 03 in full area. In this way, it is ensured that the entire bearing surface of the bearing is still available for the introduction of force and thus the bearing capacity of the bearing is completely retained.
  • Fig. 2 shows a simplified schematic representation of the device according to the invention in the uncompressed state.
  • the shape memory component 01 is located between the inner ring 03 of the rolling bearing and a shaft 05 as a stored component. In the illustrated state, there are no malpositions of the shaft 05 to be compensated, which must be absorbed by the shape memory component 01. The component 01 is therefore in an undeformed state.
  • 3 shows the shape memory component in a deformed state. In the example shown there is a malposition of the shaft 05, which must be compensated by the pseudoelastic behavior of the shape memory component 01.
  • the shape memory component 01 deforms in accordance with the shaft tilt, thereby compensating for the misalignment of the shaft 01, ie the axis of the bearing still has no angular error.
  • the fact that possible misalignments of the shaft 01 can be compensated for by the inventively equipped rolling bearing can reduce the considerable edge stresses occurring in conventional bearings.
  • a major advantage of such bearings thus carried out is that they are exposed to lower loads and thereby, of course, less wear. The associated longer life is not very last for cost reasons very beneficial.
  • Fig. 4 shows a stress-strain diagram of the pseudoelastic material used for the shape memory device.
  • the pseudo-elasticity is based on a phase transformation of austenite to martensite under stress. This change in structure is accompanied by a lattice shear, which results in a change in shape with only slightly increasing tension. This leads to a plateau in the stress-strain diagram.
  • the transition between the structural phases is fast and can therefore dampen voltage spikes by the material evades.

Landscapes

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

Abstract

L'invention concerne un dispositif de palier pour l'amortissement de chocs et pour la compensation d'erreurs angulaires sur une pièce supportée (05). Le dispositif de palier comprend, entre une surface de support (03) et la pièce supportée (05), une pièce à mémoire de forme (01), qui est constituée d'un alliage à mémoire de forme dont la propriété de mémoire de forme est la pseudoélasticité. De préférence, le dispositif de palier est réalisé en tant que palier de roulement, qui supporte un arbre (05).
PCT/DE2008/000385 2007-03-06 2008-03-04 Dispositif de palier pour l'amortissement de chocs et pour la compensation d'erreurs angulaires WO2008106952A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007010693A DE102007010693A1 (de) 2007-03-06 2007-03-06 Lageranordnung zur Dämpfung von Stößen und zum Ausgleich von Winkelfehlern
DE102007010693.0 2007-03-06

Publications (1)

Publication Number Publication Date
WO2008106952A1 true WO2008106952A1 (fr) 2008-09-12

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2008/000385 WO2008106952A1 (fr) 2007-03-06 2008-03-04 Dispositif de palier pour l'amortissement de chocs et pour la compensation d'erreurs angulaires

Country Status (2)

Country Link
DE (1) DE102007010693A1 (fr)
WO (1) WO2008106952A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2578492A1 (fr) * 2011-10-03 2013-04-10 Bell Helicopter Textron Inc. Palier avec un composant en alliage à mémoire de forme
US8662756B2 (en) 2009-12-21 2014-03-04 Rolls-Royce Plc Bearing assembly
EP2821657A1 (fr) * 2013-06-18 2015-01-07 Rolls-Royce plc Agencement de support
CN110094414A (zh) * 2019-04-25 2019-08-06 西安交通大学 一种基于形状记忆合金的间隙自适应可调节径向滑动轴承

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010025142A1 (de) 2010-06-25 2011-12-29 FG-INNOVATION UG (haftungsbeschränkt) Adaptive Feder-, Dämpfungs- oder Gelenksysteme
US8833071B2 (en) 2011-09-28 2014-09-16 Fg-Innovation Gmbh Adaptive spring, damping or hinge system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4324441A (en) * 1980-10-24 1982-04-13 Rouverol William S Rolling contact element
JPH06200933A (ja) * 1992-12-28 1994-07-19 Hitachi Ltd 転がり軸受の支持構造
DE102005020783A1 (de) * 2005-05-04 2006-11-09 Schaeffler Kg Wälzlager

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JPS639720A (ja) * 1986-06-30 1988-01-16 Nippon Seiko Kk 転がり軸受のすきま補正装置
DE3727151A1 (de) * 1987-08-14 1989-02-23 Skf Gmbh Lagerung
JPH0826898B2 (ja) * 1989-03-30 1996-03-21 キタムラ機械株式会社 軸受用予圧装置
EP0458004A1 (fr) * 1990-05-25 1991-11-27 SKF Nova AB Méthode et dispositif pour le montage d'un élément mince sur un corps
JPH04175512A (ja) * 1990-11-09 1992-06-23 Hitachi Ltd シャフトと軸受間の遊び防止装置
DE4124838A1 (de) * 1990-11-10 1992-05-14 Schaeffler Waelzlager Kg Waelzlagerkaefig
DE4122123A1 (de) 1991-07-04 1993-01-14 Daimler Benz Ag Gleitlager
US5630671A (en) * 1995-08-31 1997-05-20 The Torrington Company Locking device for a bearing assembly
JP3696666B2 (ja) * 1995-09-19 2005-09-21 淡路産業株式会社 球面すべり軸受け
DE19734998B4 (de) 1997-08-13 2006-09-14 Skf Gmbh Einrichtung zur Nachstellung des axialen Spiels in Wälzlagern
DE10120489C2 (de) 2001-04-24 2003-08-07 Skf Ab Scheibenkäfig für ein Wälzlager und Verfahren zum Einbau eines Scheibenkäfigs in ein Wälzlager
DE102004030964A1 (de) 2004-06-26 2006-01-12 Fag Kugelfischer Ag & Co. Ohg Wälzlager, insbesondere zweireihiges Rollenlager
DE102005032888A1 (de) * 2005-07-14 2007-01-18 Schaeffler Kg Sicherung eines Lagerringes

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4324441A (en) * 1980-10-24 1982-04-13 Rouverol William S Rolling contact element
JPH06200933A (ja) * 1992-12-28 1994-07-19 Hitachi Ltd 転がり軸受の支持構造
DE102005020783A1 (de) * 2005-05-04 2006-11-09 Schaeffler Kg Wälzlager

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8662756B2 (en) 2009-12-21 2014-03-04 Rolls-Royce Plc Bearing assembly
EP2578492A1 (fr) * 2011-10-03 2013-04-10 Bell Helicopter Textron Inc. Palier avec un composant en alliage à mémoire de forme
US9771974B2 (en) 2011-10-03 2017-09-26 Bell Helicopter Textron Inc. Bearing with a shape memory alloy component
EP2821657A1 (fr) * 2013-06-18 2015-01-07 Rolls-Royce plc Agencement de support
US9546570B2 (en) 2013-06-18 2017-01-17 Rolls-Royce Plc Bearing arrangement
CN110094414A (zh) * 2019-04-25 2019-08-06 西安交通大学 一种基于形状记忆合金的间隙自适应可调节径向滑动轴承

Also Published As

Publication number Publication date
DE102007010693A1 (de) 2008-09-18

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