EP2019929A1 - Palier à roulement comportant différentes poches de guidage - Google Patents

Palier à roulement comportant différentes poches de guidage

Info

Publication number
EP2019929A1
EP2019929A1 EP07722454A EP07722454A EP2019929A1 EP 2019929 A1 EP2019929 A1 EP 2019929A1 EP 07722454 A EP07722454 A EP 07722454A EP 07722454 A EP07722454 A EP 07722454A EP 2019929 A1 EP2019929 A1 EP 2019929A1
Authority
EP
European Patent Office
Prior art keywords
pockets
cage
rolling bearing
bearing according
rolling
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.)
Withdrawn
Application number
EP07722454A
Other languages
German (de)
English (en)
Inventor
Alfred Pecher
Karl Bywalez
Joachim Schleifenbaum
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schaeffler Technologies AG and Co KG
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 EP2019929A1 publication Critical patent/EP2019929A1/fr
Withdrawn legal-status Critical Current

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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/38—Ball cages
    • 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/38—Ball cages
    • F16C33/42—Ball cages made from wire or sheet metal strips
    • F16C33/422—Ball cages made from wire or sheet metal strips made from sheet metal
    • F16C33/427—Ball cages made from wire or sheet metal strips made from sheet metal from two parts, e.g. ribbon cages with two corrugated annular parts
    • 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
    • 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/38—Ball cages
    • F16C33/3887—Details of individual pockets, e.g. shape or ball retaining means
    • 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/62—Selection of substances
    • 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
    • F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
    • F16C2240/40—Linear dimensions, e.g. length, radius, thickness, gap
    • F16C2240/46—Gap sizes or clearances
    • 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
    • F16C2300/00—Application independent of particular apparatuses
    • F16C2300/02—General use or purpose, i.e. no use, purpose, special adaptation or modification indicated or a wide variety of uses mentioned

Definitions

  • the invention relates to rolling bearings with a cage for guiding the rolling elements.
  • a noise-reduced rolling bearing with a raceway which is designed as a composite hollow ring.
  • the hollow ring consists of a first ring part, which is in contact with the rolling elements, and a second ring part, which encloses the first ring part. Between the ring parts, a gap is formed, which is filled with oil or other liquid.
  • the raceway of the first ring part deviates in sections from the circular shape by one or more elastic raceway curvatures. At each point in time, some rolling elements are preloaded, whereby also receives a radial bias by the mounted shaft. The shaft thus has only a small possibility for proper movement, so that a noise is reduced.
  • a disadvantage of this solution is the high cost, which is necessary for the assembly of the liquid-filled gap.
  • the liquid must be under pressure, for which appropriate measures for sealing are required.
  • a further disadvantage is that due to the bias, the rolling friction of the rolling elements is increased on the races. Furthermore, the noise generated by the interaction between the cage and the rolling elements is only slightly damped.
  • the object of the present invention is thus to provide rolling bearings with a cage whose operating noise is lowered by a simple measure to be implemented without the rolling friction of the rolling elements is increased.
  • the invention is based on the recognition that in rolling bearings with a cage, which consists for example of sheet metal, brass or hard tissue and the leadership of the rolling elements, noise in particular by excitation of the cage occur due to a concerted movement of the rolling elements in conjunction with emerge from the cage.
  • a chaotic cage movement occurs when the occurrence of the above-mentioned cage instability
  • the present invention assumes that the rolling elements in the cage of a conventional rolling bearing to an orderly movement to be stimulated.
  • the rolling elements in a rolling bearing in combination with the cage perform no chaotic but a deterministic movement.
  • the rolling bearing changes from a stable state of a quiet operation to a stable state of noisy operation when cage noise occurs.
  • the stable state of the noisy operation is characterized in that the rolling elements periodically during their movement in the pockets have a certain state, which leads to the excitation of the cage. However, for this excitation, it is irrelevant that sections of the movement of the rolling elements can be uneven, irregular or chaotic.
  • the same design of the rolling elements and their pockets in the cage causes at least the majority of the rolling elements periodically a same state during movement in the pocket, that is, perform a concerted movement. This condition may be characterized by the location of the rolling element within the pocket or also the velocity vector or the acceleration vector with respect to the pocket.
  • This periodic state leads to a periodic excitation of the cage and finally to swinging of the cage.
  • the swinging of the cage is a major cause of the increased operating noise of the rolling bearing.
  • the swinging of the cage can be transferred to other parts of the rolling bearing and the machine.
  • Essential for the invention is first that the rolling elements are performed with a game in the guide pockets of the cage, which game differs at least in one of these pockets of the game in another pocket of the cage.
  • the diversity of the games in these leadership pockets can both by different training of the respective leadership pockets, especially in the same rolling elements, as well as by different
  • a particular advantage of this invention is that a far-reaching reduction of the noise generated in the region of the cage of a roller bearing is achieved by a design change that is easy to implement. It requires no additional components or constructive additions, which would increase the cost of producing a rolling bearing according to the invention.
  • rolling bearings Preferably, many rolling bearings have only the same, i. in the context of usual manufacturing tolerances same, rolling elements. In other words, the rolling elements are within a certain sorting (same nominal size).
  • Some bearings have several groups of identical rolling elements, which are guided in one or more cages. A periodic excitation of the cage of such a rolling bearing can be avoided according to the invention in that the play is designed differently within at least one of the groups of identical rolling elements.
  • Rolling bearings according to the invention are particularly preferably ball bearings, in which case the rolling bodies are designed as balls.
  • the embodiments of the game in the individual pockets are designed largely irregular, so that in a majority of pockets no bag of this group has the same game as another bag of this group. Some of the bags can Nevertheless, be executed the same, especially if the same pockets are not arranged side by side or opposite each other. Preferably, no bag is exactly the same as another bag.
  • the game differs in the pockets of a group to guide same rolling elements due to different shapes of the pockets.
  • the pockets may have an elliptical cross-section, these ellipses are not geometrically similar, but have a same or similar circumference.
  • the different shape of the pockets can also be achieved by special shapes such as local widenings or indentations.
  • the edges can be designed differently. For example, in case-like pockets in which the rolling elements are guided at four edges, the edge distances of the pockets may vary.
  • the play does not differ in the pockets of a group for guiding identical rolling elements due to a different shape of the pockets. All pockets of a group for the guidance of identical rolling elements are geometrically similar and differ only by a scaling factor.
  • Bags for guiding rolling elements can usually be characterized by a radius which describes the size of the volume in which the rolling element can rotate. This volume is determined by the geometry of the cage.
  • the pockets are usually dome-shaped.
  • the diversity of the game in the pockets can be described in such cases by different radii.
  • Other pocket shapes included are, for example, a box shape or a frame shape.
  • the radii of the pockets are of different sizes, in particular, in the case of a ball bearing according to the invention with balls, the radii of the dome-shaped pockets have different sizes.
  • the play in the pockets of a group for guiding the rolling elements does not differ due to a different shape of the pockets, but rather due to the different design of the respective rolling elements. That is, different rolling elements or rolling elements of different dimensions are used here, which differ in their dimensions beyond the usual manufacturing tolerance.
  • FIG. 1 shows two views of a cage 01 of a rolling bearing according to the invention.
  • 1 shows a side sectional view of a four-pocket portion of a cage half of the cage 01.
  • FIG. 1 b shows a plan view of a four-pocket portion of the cage half of the cage 01.
  • the half of the cage 01 shown in FIG. 1 serves to guide eight balls (not shown), which act as rolling elements in a ball bearing (not shown).
  • the cage 01 has eight dome-shaped pockets 02 for this purpose. Between the pockets 02 holes 03 for the implementation of rivets or other connection means (not shown) are arranged.
  • To mount the ball bearing place the eight balls between the two halves of the cage and the two halves of the cage 01 with eight rivets connected with each other.
  • the cage 01 has an outer diameter of about 70 mm and an inner diameter of 65 mm and consists of a sheet having a thickness of 1 to 2 mm.
  • the eight pockets 02 are evenly distributed over the annular cage 01. Consequently, the centers of the pockets 02 each have an angle of 45 degrees to each other.
  • the balls have a diameter adapted to the pocket size.
  • the dome-shaped pockets 02 are slightly larger than the balls executed, so that the balls are guided with a game in the pockets 02.
  • the game allows a free rolling of the balls in the cage 01.
  • the radii of the eight dome-shaped pockets 02 are made different sizes. This is not a different size, which is due to manufacturing tolerances, since they would be too small in today's precision manufacturing, to prevent a regular stimulation of the cage.
  • the radii of the pockets 02 are in the illustrated embodiment in the following proportions to each other:
  • the pockets 02 in this example have an average radius of 8.979 millimeters.
  • the radii of the pockets 02 are up to 1, 37 millimeters larger and up to 0.94 millimeters smaller than the average radius of the pockets 02. These deviations amount to a multiple of the usual manufacturing tolerance.
  • the radii of the pockets 02 are randomly selected within a given bandwidth. They are preferably up to 20 percent larger or smaller than the average radius of the pockets 02.
  • the dimensions of the game in the pockets 02 range in the o. G. Example of 0.29 millimeters to 2.6 millimeters and therefore differ by about a factor of 10.
  • This relative indication is a benchmark for the execution of the game in the pockets 02 of a rolling bearing according to the invention.
  • the difference in the size of the play in the pockets is limited by the minimum allowable amount of play and the maximum allowable amount of play.
  • the minimum permissible game is given when an even smaller game would result in a significant increase in rolling friction and consequent warming.
  • the maximum permissible game is given when an even larger game would not allow safe guidance of the ball. In a rolling bearing according to the invention, these limits must not necessarily be exploited for the design of the game.
  • the rolling bearing according to the invention can be designed so that the dimensions of the game are significantly larger than the minimum allowable game and clearly leu less than the maximum allowable game.
  • the ratio between the smallest and the largest measure of the game for example, be from twice to a hundred times. This relation must be adapted to the rolling bearing and its operating parameters.
  • the above example list of radii of the pockets 02 it can be seen that the third pocket 07 and the sixth pocket 02; the first pocket 04 and the fourth pocket 02 as well as the second pocket 06 and the fifth pocket see each are the same size.
  • the same size pockets 02 should not be arranged side by side and not opposite each other.
  • the aforementioned matches do not lead to a regular excitement of the cage 01 and thus to an increased noise development.
  • the number of matches and the value range for the dimensions of the game are to be selected according to the rolling bearing and its operating behavior. For example, for a rolling bearing with an intensive

Landscapes

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

Abstract

L'invention concerne un palier à roulement comprenant une cage (01) qui comporte au moins un premier groupe de poches de guidage (04, 06, 07, 08) dans laquelle des corps de roulement sont guidés avec un certain jeu. Selon l'invention, le jeu ménagé dans au moins une première poche de guidage (04) du premier groupe diffère du jeu ménagé dans une deuxième poche de guidage (06) de ce premier groupe de poches de guidage.
EP07722454A 2006-05-24 2007-05-22 Palier à roulement comportant différentes poches de guidage Withdrawn EP2019929A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006024376.5A DE102006024376B4 (de) 2006-05-24 2006-05-24 Wälzlager mit unterschiedlichen Führungstaschen
PCT/DE2007/000924 WO2007134591A1 (fr) 2006-05-24 2007-05-22 Palier à roulement comportant différentes poches de guidage

Publications (1)

Publication Number Publication Date
EP2019929A1 true EP2019929A1 (fr) 2009-02-04

Family

ID=38529496

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07722454A Withdrawn EP2019929A1 (fr) 2006-05-24 2007-05-22 Palier à roulement comportant différentes poches de guidage

Country Status (7)

Country Link
US (1) US20090290826A1 (fr)
EP (1) EP2019929A1 (fr)
JP (1) JP2009537773A (fr)
KR (1) KR20090018969A (fr)
CN (1) CN101484714B (fr)
DE (1) DE102006024376B4 (fr)
WO (1) WO2007134591A1 (fr)

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DE10338207B8 (de) * 2003-08-20 2010-02-11 FAG Kugelfischer Georg Schäfer AG Pendelwälzlager und Käfig für das Pendelwälzlager
JP6370026B2 (ja) * 2011-11-29 2018-08-08 日本精工株式会社 保持器および転がり軸受
CN102767571A (zh) * 2012-08-15 2012-11-07 青岛泰德汽车轴承有限责任公司 一种球轴承支撑装置
FR2998631B1 (fr) * 2012-11-27 2015-09-04 Skf Ab Cage pour roulement, notamment pour roulement de direction electrique de vehicule automobile
ITTO20130464A1 (it) * 2013-06-05 2014-12-06 C M S P S P A Gabbia per cuscinetti a sfere.
FR3007808B1 (fr) * 2013-06-28 2015-07-17 Skf Ab Cage pour roulement, notamment pour roulement de systeme de direction electrique de vehicule automobile
DE102015200298B4 (de) 2015-01-13 2017-05-04 Schaeffler Technologies AG & Co. KG Schrägkugellager
JP7017851B2 (ja) 2016-12-01 2022-02-09 住友重機械工業株式会社 故障診断システムおよび処理ユニット
DE102018127480A1 (de) 2018-11-05 2020-05-07 Schaeffler Technologies AG & Co. KG Wälzlagerkäfig
DE102018127561A1 (de) 2018-11-05 2020-05-07 Schaeffler Technologies AG & Co. KG Wälzlagerkäfig und Verfahren zur Herstellung eines Kugellagers
WO2024048162A1 (fr) * 2022-08-29 2024-03-07 Ntn株式会社 Roulement à billes
CN120402533B (zh) * 2025-05-13 2026-01-23 镇江联创机械配件有限公司 轴承的双密封圈组合密封结构

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Also Published As

Publication number Publication date
CN101484714B (zh) 2011-06-08
JP2009537773A (ja) 2009-10-29
CN101484714A (zh) 2009-07-15
KR20090018969A (ko) 2009-02-24
DE102006024376A1 (de) 2007-11-29
DE102006024376B4 (de) 2016-03-24
US20090290826A1 (en) 2009-11-26
WO2007134591A1 (fr) 2007-11-29

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