WO2008119597A2 - Palier à roulement à contact oblique axial, permettant notamment de monter un plateau circulaire sur des machines-outils - Google Patents

Palier à roulement à contact oblique axial, permettant notamment de monter un plateau circulaire sur des machines-outils Download PDF

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Publication number
WO2008119597A2
WO2008119597A2 PCT/EP2008/052007 EP2008052007W WO2008119597A2 WO 2008119597 A2 WO2008119597 A2 WO 2008119597A2 EP 2008052007 W EP2008052007 W EP 2008052007W WO 2008119597 A2 WO2008119597 A2 WO 2008119597A2
Authority
WO
WIPO (PCT)
Prior art keywords
bearing
rows
axial
rolling
rolling elements
Prior art date
Application number
PCT/EP2008/052007
Other languages
German (de)
English (en)
Other versions
WO2008119597A3 (fr
Inventor
Frank Dürschmied
Andreas Geier
Jörg-Oliver Hestermann
Herbert Schimschal
Martin Schreiber
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 WO2008119597A2 publication Critical patent/WO2008119597A2/fr
Publication of WO2008119597A3 publication Critical patent/WO2008119597A3/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
    • 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
    • F16C19/34—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 both radial and axial load
    • F16C19/38—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 both radial and axial load with two or more rows 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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/50—Other types of ball or roller bearings
    • F16C19/505—Other types of ball or roller bearings with the diameter of the rolling elements of one row differing from the diameter of those of another row
    • 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
    • F16C33/34—Rollers; Needles
    • F16C33/36—Rollers; Needles with bearing-surfaces other than cylindrical, e.g. tapered; with grooves in the bearing surfaces
    • 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
    • F16C2300/10—Application independent of particular apparatuses related to size
    • F16C2300/14—Large applications, e.g. bearings having an inner diameter exceeding 500 mm
    • 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
    • F16C2322/00—Apparatus used in shaping articles
    • F16C2322/39—General build up of machine tools, e.g. spindles, slides, actuators

Definitions

  • Axial angular contact bearings in particular for rotary table storage on machine tools
  • the invention relates to a thrust roller bearing according to the preamble forming features of claim 1, and they particularly advantageous for rotary table bearings of machine tools applicable.
  • Modern rotary table bearings for machine tools are nowadays manufactured as ready-to-install precision bearings for combined loads with high demands on the running accuracy and, depending on the speed and duty cycle, are designed either as axial-radial bearings or axial-angular-contact ball bearings. Both bearing types accommodate radial and bilateral axial loads as well as tilting moments and are preloaded radially and axially free of play. While axial-radial bearings are mainly used in standard applications with low speeds and low duty cycle and are usually characterized by a higher, with the speed increasing friction torque, axial angular contact ball bearings are very well suited for fast-turning applications with high duty cycle and are characterized by significantly low friction and low lubricant consumption.
  • Such rotary table bearings are known inter alia by the published by the applicant Catalog "Rolling" January 2006 and are described for example on pages 990 to 1019 in the embodiments mentioned as axial-radial bearings and axial angular contact ball bearings essentially from an axial and a radial part, wherein the axial part by an axial needle or cylindrical roller ring, an outer bearing ring, an angle ring and a wave washer is formed while the radial part of a full complement or cage-guided, biased cylinder roller set is used.
  • the illustrated axial angular contact ball bearings essentially consist of a one- or two-part inner bearing ring and of an outer bearing ring and a plurality of bearing balls arranged side by side between the bearing rings in two juxtaposed rows which at a defined contact angle with their running surfaces on several roll side by side on the outer side of the inner bearing ring and raceways arranged on the inside of the outer bearing ring.
  • also designed as a double tapered roller bearing rotary table bearings are known in which instead of two rows of bearing balls two mutually employed rows of cylindrical rollers are used as rolling elements.
  • the invention is therefore the object of an axial skew, especially for rotary table storage on machine tools to design, which at the same or approximately the same space requirements as known rotary table bearings and without losses Rigidity and accuracy has a higher load capacity and thus is suitable for very high speeds in continuous operation.
  • this object is achieved in an axial helical roller bearing according to the preamble of claim 1 such that all rolling elements of the axial helical roller bearing are formed as ball rollers, each having two axial side symmetrically flattened from its basic spherical shape, parallel to each other arranged end faces.
  • the invention is thus based on the finding that it is already possible by exchanging the previously trained as bearing balls or cylindrical rollers against trained as ball rolling elements and by adapted thereto track training in the bearing rings, the number of rolling elements and thus the carrying capacity of an axial Inclined roller bearing without loss of rigidity and accuracy to increase so that it is also suitable for very high speeds, with no axial space flattened and therefore narrow design of the rolling elements no additional space for such axial thrust roller bearing is necessary.
  • the inventively designed axial oblique roller bearing that it preferably has four rows formed as ball rollers rolling elements, of which the two inner rows are formed with an identical pitch circle diameter, which is smaller than the also identical pitch circle diameter is two outer rows.
  • the diameter of the ball basic shape of the rolling elements of the two outer rows compared to the diameter of the rolling elements of the two inner rows is larger, so that in each case an outer row and the adjacently arranged inner row of rolling elements a first and a second row pair, each with different Wälz stresses- and form pitch diameters.
  • the ball rollers of all rows with the same diameter of the ball basic shape at different pitch diameters between the inner and the outer rows of rolling elements.
  • the invention formed according to Axial Schrägnach according to claims 4 and 5 further characterized by the fact that the adjacent rolling elements of both pairs of rows are each arranged on a common axis of rotation and parallel to each other inclined pressure angle axes and both pairs of rows Rolling elements are employed in O arrangement against each other.
  • the rolling elements of each pair of rows are preferably guided in such a way in each case in a common, designed as a plastic cage cage bearing cage, in that the rolling bodies arranged in each case on a common axis of rotation are arranged adjacent to one another in a common cage window with their mutually facing side faces and thus lead one another mutually in an advantageous manner.
  • the diameters and the widths of the adjacent rolling elements of both rows are dimensioned such that all enveloping cones touching the rolling elements at their outer contours with their conical tips exactly at the intersection of the common axis of rotation of these rolling elements are arranged with the axis of rotation of the axial angular contact bearings.
  • This Hüllkegel bearing kinematics known per se from tapered roller bearings represents an optimum for angular contact bearings of all kinds with respect to bearing load capacity, wear reduction and service life and moreover, in the specific case, causes the adjacent ball rollers of two adjacent rows to roll synchronously with one another or at least different relative speeds between these ball rollers, the friction occurring is reduced.
  • the axial skew roll Bearing for a rotary table storage thus compared to the known from the prior art rotary table bearings the advantage that it can be equipped by using ball rollers as rolling elements with the same or approximately the same space requirements and without loss of rigidity and accuracy with a much higher number of rolling elements and is thus suitable for very high speeds in continuous operation due to the increased carrying capacity.
  • FIG. 1 shows a cross section through a first embodiment of an axial skew roller bearing designed according to the invention
  • FIG. 2 shows a cross section through a second embodiment of an axial skew roller bearing designed according to the invention.
  • an axial angular contact bearing 1 suitable for rotary table mounting on machine tools which consists essentially of a two-part inner bearing ring 2 and a one-piece outer bearing ring 3 and of a plurality between the bearing rings 2, 3 in several rows 4, 5, 6, 7 juxtaposed rolling elements 8, 9 is arranged under defined pressure angles with their running surfaces on several side by side on the outer side 10 of the inner bearing ring 2 and on the inner side 11 of the outer race 4 arranged raceways 12, 13, 14, Roll off 15.
  • the unspecified holes in the inner and outer bearing ring serve to screw the Axial- Schrägisselzlagers 1 to the adjacent construction of the machine tool.
  • the two inner rows 5, 6 are formed with an identical pitch circle diameter, which is smaller than the likewise identical pitch circle diameter of the two outer rows 4, 7 and at the same time the diameter of the ball basic shape of the rolling elements 8 of the two outer rows 4, 7 is greater as the diameter of the rolling elements 9 of the two inner rows 5, 6.
  • a peculiarity of the first embodiment shown in Figure 1 of the present invention formed axial angular rolling bearing is that each form an outer row 4, 7 and the adjacently arranged inner row 5, 6, a first and a second row pair 16, 17 and the adjacent rolling elements , 9 of these two pairs of rows 16, 17 are each arranged on a common axis of rotation 18, 19 and on mutually parallel oblique pressure angle axes 20, 21, 22, 23.
  • Both pairs of rows 16, 17 of the rolling elements 8, 9 are set in O arrangement against each other and are each guided in a common, designed as a plastic cage cage bearing cage 24, 25 such that each arranged on a common axis of rotation 18, 19 rolling elements , 9 are arranged in a common cage window and lead one another mutually.
  • the illustrated in Figure 2 second embodiment of the present invention formed axial bevel bearing 1, however, differs in that the adjacent rolling elements 8, 9 of both rows 16, 17 clearly visible on different, to the longitudinal central axis 26 of the axial Schrägnachlzlagers 1 converging pressure angle axes 20, 21, 22, 23 are arranged and both pairs of rows 16, 17 of the rolling elements 8, 9 are also employed in O-arrangement against each other. Also in this embodiment, the rolling elements 8, 9 of both pairs of rows 16, 17 are guided in a common, designed as a plastic cage cage bearing cage 24, 25, but each rolling elements 8, 9 of the individual rows 4, 5, 6, 7 each in its own Cage window is arranged.
  • This embodiment of the axial angular roller bearing 1 is characterized by a greatly increased tilting rigidity and makes it possible to tune the decisive bearing properties even better to higher speeds.

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

Abstract

La présente invention concerne un palier à roulement à contact oblique axial (1) permettant de monter un plateau circulaire sur des machines-outils. Ce palier à roulement est principalement composé d'une bague de roulement intérieure (2) en une ou deux parties, d'une bague de roulement extérieure (3) et de plusieurs corps de roulement (8, 9) qui sont placés les uns à côté des autres en plusieurs rangées (4, 5, 6, 7) entre les bagues de roulement (2, 3). Les surfaces de roulement de ces corps de roulement roulent avec des angles de pression définis sur plusieurs voies de roulement (12, 13, 14, 15) qui se trouvent les unes à côté des autres sur la face extérieure (10) de la bague de roulement intérieure (2) et sur la face intérieure (11) de la bague de roulement extérieure (4). Selon cette invention, tous les corps de roulement (8, 9) du palier à roulement à contact oblique axial (1) sont conçus sous forme de billes présentant respectivement deux faces qui sont aplaties de manière symétrique par rapport à leur forme de base de sphère du côté axial et qui sont placées de manière parallèle l'une par rapport à l'autre, afin de pouvoir placer un nombre plus important de corps de roulement (8, 9) entre les bagues de roulement (2, 3) du palier à roulement à contact oblique axial (1) que dans les paliers de plateau circulaire connus, avec le même ou quasiment le même encombrement, et de pouvoir augmenter de façon importante la résistance de portée du palier à roulement à contact oblique axial (1).
PCT/EP2008/052007 2007-03-30 2008-02-19 Palier à roulement à contact oblique axial, permettant notamment de monter un plateau circulaire sur des machines-outils WO2008119597A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007015421.8 2007-03-30
DE102007015421A DE102007015421A1 (de) 2007-03-30 2007-03-30 Axial-Schrägwälzlager, insbesondere zur Rundtischlagerung an Werkzeugmaschinen

Publications (2)

Publication Number Publication Date
WO2008119597A2 true WO2008119597A2 (fr) 2008-10-09
WO2008119597A3 WO2008119597A3 (fr) 2008-11-20

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PCT/EP2008/052007 WO2008119597A2 (fr) 2007-03-30 2008-02-19 Palier à roulement à contact oblique axial, permettant notamment de monter un plateau circulaire sur des machines-outils

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DE (1) DE102007015421A1 (fr)
WO (1) WO2008119597A2 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009025516A1 (de) 2009-06-19 2010-12-23 Schaeffler Technologies Gmbh & Co. Kg Axial-Schrägwälzlager, insbesondere zur Rundtischlagerung an Werkzeugmaschinen sowie Verfahren zur Montage eines solchen Axial-Schrägwälzlagers
FR2973087B1 (fr) * 2011-03-25 2014-04-18 Defontaine Palier a trois rangees et plus de corps roulants
DE102014210754A1 (de) * 2014-06-05 2015-12-17 Schaeffler Technologies AG & Co. KG Rundtischlageranordnung
DE102015224860A1 (de) * 2015-12-10 2017-03-16 Schaeffler Technologies AG & Co. KG Rundtischlageranordnung
DE102015224865A1 (de) * 2015-12-10 2017-03-09 Schaeffler Technologies AG & Co. KG Rundtischlager
DE102017216483A1 (de) 2016-10-25 2018-04-26 Minebea Co., Ltd. Lagereinrichtung für ein um eine Drehachse drehendes Element und Werkzeugmaschinentisch mit einer solchen Lagereinrichtung
DE102017220629A1 (de) 2017-11-17 2019-05-23 Minebea Mitsumi Inc. Lagereinrichtung für ein um eine Drehachse drehendes Element und Werkzeugmaschinentisch mit einer solchen Lagereinrichtung

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE331455C (de) * 1919-04-12 1921-01-07 Skf Svenska Kullagerfab Ab Tragrollenlager
US2068198A (en) * 1937-01-19 Roller bearing
DE8437821U1 (de) * 1984-12-22 1986-09-18 Jacob, Werner, 6000 Frankfurt Ringförmiges Drahtlager
EP0238725A2 (fr) * 1986-03-22 1987-09-30 Hoesch Aktiengesellschaft Palier à roulement de grande dimension
DE9202230U1 (fr) * 1992-02-21 1992-04-23 Ina Waelzlager Schaeffler Kg, 8522 Herzogenaurach, De
DE4334195A1 (de) * 1993-10-07 1994-03-24 Geuer Mann Ernst Radial-Wälzlager mit Kugelscheiben
DE10331936A1 (de) * 2003-07-15 2005-02-10 Fag Kugelfischer Ag & Co. Ohg Radlagereinheit in Schrägkugellagerausführung
DE102005029983A1 (de) * 2005-06-28 2007-01-11 Schaeffler Kg Mehrreihiges Schrägwälzlager, insbesondere zur Lagerung der Kegelritzelwelle in einem Kraftfahrzeug-Hinterachsgetriebe
WO2008052875A1 (fr) * 2006-11-02 2008-05-08 Schaeffler Kg Roulement de roue pour des véhicules automobiles

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006003691A1 (de) * 2006-01-26 2007-08-02 Schaeffler Kg Schrägwälzlager, insbesondere mehrreihiges Kugelrollenlager

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2068198A (en) * 1937-01-19 Roller bearing
DE331455C (de) * 1919-04-12 1921-01-07 Skf Svenska Kullagerfab Ab Tragrollenlager
DE8437821U1 (de) * 1984-12-22 1986-09-18 Jacob, Werner, 6000 Frankfurt Ringförmiges Drahtlager
EP0238725A2 (fr) * 1986-03-22 1987-09-30 Hoesch Aktiengesellschaft Palier à roulement de grande dimension
DE9202230U1 (fr) * 1992-02-21 1992-04-23 Ina Waelzlager Schaeffler Kg, 8522 Herzogenaurach, De
DE4334195A1 (de) * 1993-10-07 1994-03-24 Geuer Mann Ernst Radial-Wälzlager mit Kugelscheiben
DE10331936A1 (de) * 2003-07-15 2005-02-10 Fag Kugelfischer Ag & Co. Ohg Radlagereinheit in Schrägkugellagerausführung
DE102005029983A1 (de) * 2005-06-28 2007-01-11 Schaeffler Kg Mehrreihiges Schrägwälzlager, insbesondere zur Lagerung der Kegelritzelwelle in einem Kraftfahrzeug-Hinterachsgetriebe
WO2008052875A1 (fr) * 2006-11-02 2008-05-08 Schaeffler Kg Roulement de roue pour des véhicules automobiles

Also Published As

Publication number Publication date
DE102007015421A1 (de) 2008-10-02
WO2008119597A3 (fr) 2008-11-20

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