DE2846555A1 - Socket for electrical machine roller bearing - has projections acting as springs pressing radially against outer ring of roller bearing of generator in vehicle - Google Patents

Socket for electrical machine roller bearing - has projections acting as springs pressing radially against outer ring of roller bearing of generator in vehicle

Info

Publication number
DE2846555A1
DE2846555A1 DE19782846555 DE2846555A DE2846555A1 DE 2846555 A1 DE2846555 A1 DE 2846555A1 DE 19782846555 DE19782846555 DE 19782846555 DE 2846555 A DE2846555 A DE 2846555A DE 2846555 A1 DE2846555 A1 DE 2846555A1
Authority
DE
Germany
Prior art keywords
bearing
outer ring
projections
socket
bearing hub
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Withdrawn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
DE19782846555
Other languages
German (de)
Inventor
Walter Hagenlocher
Heeinz Hesse
Karl Kleebaur
Christoph Dipl Ing Kugel
Johann Kunz
Werner Lemke
Ruediger Sohnle
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to DE19782846555 priority Critical patent/DE2846555A1/en
Publication of DE2846555A1 publication Critical patent/DE2846555A1/en
Withdrawn legal-status Critical Current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
    • 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
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/042—Housings for rolling element bearings for rotary movement
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
    • H02K5/1732—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at both ends of the rotor
    • 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
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
    • F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
    • 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
    • F16C2380/00—Electrical apparatus
    • F16C2380/26—Dynamo-electric machines or combinations therewith, e.g. electro-motors and generators

Abstract

The socket is designed so as to act as a spring. Such a socket is intended esp. for the bearing plate of a generator in a motor vehicle. The outer ring (15) of the roller bearing (13) rest on projections (17) on the inside of the socket (12). The socket is essentially tubular in shape. The projections have recesses (19) opposite them on the outer side of the socket. The cross-section of the socket is meander shaped along its periphery. The radial force with which the projections press against the outer ring is chosen so that it does not lead to the jamming of the bearing at the lowest operating temp. nor to unacceptably large play between the outer ring and the projections at the highest operating temp.

Description

Lagerbüchse für WälzlagerBearing bush for roller bearings

Stand der Technik Die Erfindung geht aus von einer Lagernabe nach der Gattung des Hauptanspruchs. Bei elektrischen Maschinen mit hoher Schüttelbeanspruchung, beispielsweise bei Generatoren, die in Kraftfahrzeuge eingebaut sind, kann das als Wälzlager ausgebildete Kugellager oder Rollenlager ausschlagen. Dies ist besonders dann der Fall, wenn das aus Stahlteilen bestehende Wälzlager in Lagernaben aus Leichtmetall eingesetzt ist, und zwar deshalb, weil Stahl und Leichtmetall unterschiedliche Wärmeausdehnungskoeffizienten haben und weil das Leichtmetall im Vergleich zu dem Stahl verhältnismäßig weich ist. Besonders häufig tritt der Fehler dann auf, wenn das Wälzlager als Loslager ausgebildet ist, also als ein Lager, das in axialer Richtung verschiebbar ist.PRIOR ART The invention is based on a bearing hub the genre of the main claim. In the case of electrical machines with high vibration loads, For example, in the case of generators that are built into motor vehicles, this can be as Knock out ball bearings or roller bearings formed by roller bearings. This is special then the case when the rolling bearing made of steel parts is in bearing hubs made of light metal is used because steel and light metal have different coefficients of thermal expansion and because the light metal is proportionate to the steel soft is. The error occurs particularly often when the rolling bearing is a floating bearing is designed, so as a bearing that is displaceable in the axial direction.

Man hat schon dadurch Abhilfe zu schaffen versucht, daß man statt eines Loslagers ein Festlager eingebaut hat.One has already tried to remedy the situation by instead of has installed a fixed bearing in a floating bearing.

Dabei ist es aber schwierig, den Festsitz über den gesamten im Betrieb vorkommenden Temperaturbereich zu gewährleisten, ohne daß das Lagerspiel beeinträchtigt wird.However, it is difficult to keep the tight fit over the entire operation to ensure occurring temperature range without affecting the bearing play will.

Vorteile der Erfindung Die erfindungsgemäße Lagernabe mit den kennzeichnenden Merkmalen des Hauptanspruchs hat demgegenüber den Vorteil, daß die Lagerbüchse über den gesamten vorkommenden Temperaturbereich wie eine Feder wirkt, die das Wälzlager festhält. Dadurch wird erreicht, daß bei niedrigen Betriebstemperaturen keine zu hohen radialen Kräfte auf das Wälzlager wirken und so das Lagerspiel beeinträchtigen und daß auch bei hohen Betriebstemperaturen ein fester Sitz des Lagers in der Lagernabe gewährleistet ist.Advantages of the invention The bearing hub according to the invention with the characterizing Features of the main claim has the advantage that the bearing bush over The roller bearing acts like a spring over the entire temperature range that occurs holds on. This ensures that at low operating temperatures none too high radial forces act on the roller bearing and thus impair the bearing play and that even at high operating temperatures, the bearing is firmly seated in the bearing hub is guaranteed.

Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen der im Hauptanspruch angegebenen Lagernabe möglich.The measures listed in the subclaims are advantageous Further developments and improvements to the bearing hub specified in the main claim are possible.

Besonders vorteilhaft ist eine röhrenförmige Ausbildung, dadurch läßt sich die Lagernabe in ihrem Querschnitt mäanderförmig gestalten, die mäanderförmige Gestalt ist leicht durch einen angemessenen Formgebungsvorgang, beispielsweise durch Tiefziehen oder Drücken oder Pressen oder Schmieden, herstellbar. Besonders vorteilhaft ist, daß die erfindungsgemäße Lagernabe ein bestandteil eines aus Blech hergestellten Lagerschilds und aus diesem ausgeformt sein kann.A tubular design is particularly advantageous, as a result of which it can be the bearing hub meander-shaped in its cross-section, the meander-shaped Shape is easy by an appropriate shaping process, for example by Deep drawing or pressing or pressing or forging, producible. Particularly beneficial is that the bearing hub according to the invention is a part of one of Sheet made end shield and can be formed from this.

Ein weiterer Vorteil ist, daß bei niedrigen Temperaturen im Gegensatz zu herkömmlichen Lagern die Lagerluft nicht nennenswert eingeengt und damit die übermäßige Geräuschbildung vermieden wird. Durch die federnde Wirkung der Lagernabe schlägt die Nabenbohrung nicht aus. Die Herstellung wird dadurch kostengünstiger, daß bei der Nabenbohrung gröbere Toleranzen zugelassen werden können. Der Einsatz der erfindungsgemäßen Lagernabe ist dann besonders vorteilhaft, wenn das Wälzlager und die Nabe aus Materialien mit unterschiedlichen Wärmeausdehnungs-Koeffizienten bestehen.Another advantage is that as opposed to low temperatures compared to conventional bearings, the internal clearance is not noticeably restricted and thus the excessive noise is avoided. Due to the resilient effect of the bearing hub does not knock out the hub bore. This makes production more cost-effective, that coarser tolerances can be permitted for the hub bore. The use the bearing hub according to the invention is particularly advantageous when the roller bearing and the hub made of materials with different coefficients of thermal expansion exist.

Zeichnung Figur 1 zeigt einen Querschnitt durch einen Teil eines Lagerschilds mit einer Lagernabe und einem Kugellager längs der Achse einer zu lagernden Maschinenwelle, Figur 2 einen Querschnitt durch die Lagernabe senkrecht zur Achse der Maschinenwelle.Drawing Figure 1 shows a cross section through part of a bearing plate with a bearing hub and a ball bearing along the axis of a machine shaft to be supported, FIG. 2 shows a cross section through the bearing hub perpendicular to the axis of the machine shaft.

Beschreibung des Ausführungsbeispieles In Figur 1 ist ein Teil eines aus Blech hergestellten Lagerschilds 11 zu sehen, aus dem eine Lagernabe 12 ausgeformt ist. In die Lagernabe 12 ist ein Kugellager 13 eingesetzt, das einen Innenring 14 und einen Außenring 15 umfaßt. Im Innenring 14 ist eine Maschinenwelle 16 gelagert.Description of the exemplary embodiment In FIG. 1, part of a To see end shield 11 made of sheet metal, from which a bearing hub 12 is formed is. A ball bearing 13 is inserted into the bearing hub 12 and has an inner ring 14 and an outer ring 15 comprises. A machine shaft 16 is mounted in the inner ring 14.

Figur 2 zeigt einen Querschnitt. Man sieht, daß der Außenring 15 des als Kugellager ausgebildeten Wälzlagers 13 auf der Innenseite der Lagernabe 12 an Vorsprüngen 17 anliegt. Die Lagernabe ist mäanderförmig ausgebildet, und so wechseln sich die Vorsprünge 17 mit Ausbuchtungen 18 der Lagernabe 12 ab.Figure 2 shows a cross section. It can be seen that the outer ring 15 of the Rolling bearing 13 designed as a ball bearing on the inside of the bearing hub 12 Projections 17 rests. The bearing hub is designed in a meander shape, and so change the projections 17 with bulges 18 of the bearing hub 12 from.

Dadurch stehen sich den Vorsprüngen 17, von der Außenseite der Lagernabe 12 her gesehen, Einbuchtungen 19 gegenüber.As a result, the projections 17 stand on the outside of the bearing hub 12 seen, indentations 19 opposite.

Die Vorsprünge 17 auf der Innenseite der Lagernabe 15 können durch ein Ausbohren auf das erforderliche Maß gebracht werden. Die lichte Weite zwischen gegenüberliegenden Einbuchtungen 17 ist so bemessen, daß der Außenring 15 des Wälzlagers 13 fest in der Lagernabe 12 sitzt. Die Bohrung ist dabei so bemessen, daß über dem gesamten im Betrieb vorkommenden Temperaturbereich ein fester Sitz des Wälzlagers 13 gewährleistet ist, ohne daß bei tiefen Temperaturen die radial auf den Außenring wirkenden Kräfte unzulässig hohe nehmen Die Lagernabe 12 kann ein Teil für sich sein. Die Lagernabe 12 kann aber auch, wie in Figur 1 dargestellt, ein Teil eines Lagerschilds 11 sein und aus diesem durch einen angemessenen Formgebungsvorgang, beispielsweise durch Tiefziehen, Drücken, Pressen, Schmieden, ausgeformt sein. Zweckmäßigerweise ist das Lagerschild 11 membranartig ausgebildet, so daß unterschiedliche Wärmeausdehnungen in Richtung der Längsachse der Welle 16, die durch das Verwenden verschiedener Materialien für das Gehäuse, in das das Lagerschild 11 eingebaut ist, und die Welle 16 entstehen, aufgefangen werden können.The projections 17 on the inside of the bearing hub 15 can through a boring can be brought to the required level. The clear width between opposite indentations 17 is dimensioned so that the outer ring 15 of the roller bearing 13 is firmly seated in the bearing hub 12. The hole is dimensioned so that over the A tight fit of the rolling bearing over the entire temperature range occurring during operation 13 is guaranteed without the radial impact on the outer ring at low temperatures acting forces take unacceptably high The bearing hub 12 can be a part of itself be. However, as shown in FIG. 1, the bearing hub 12 can also be part of a Be end shield 11 and from this by an appropriate shaping process, be shaped for example by deep drawing, pressing, pressing, forging. Appropriately the bearing plate 11 is designed like a membrane, so that different thermal expansions in the direction of the longitudinal axis of the shaft 16, which is achieved by using different materials for the housing in which the end shield 11 is installed and the shaft 16 are created, can be caught.

Claims (7)

Ansprüche Lagernabe für Wälzlager, insbesondere für Kugellager zum Einbau in ein Lagerschild für Kraftfahrzeug-Drehstromgeneratoren, mit einem Außenring, dadurch gekennzeichnet, daß der Außenring (15) des Wälzlagers (13) an Vorsprüngen (17) auf der Innenseite der Lagernabe (12) anliegt.Claims bearing hub for roller bearings, in particular for ball bearings for Installation in a bearing plate for motor vehicle three-phase alternators, with an outer ring, characterized in that the outer ring (15) of the roller bearing (13) on projections (17) rests on the inside of the bearing hub (12). 2. Lagernabe nach Anspruch 1, dadurch gekennzeichnet, daß die Lagernabe (12) im wesentlichen röhrenförmig ausgebildet ist.2. Bearing hub according to claim 1, characterized in that the bearing hub (12) is substantially tubular. 3. Lagernabe nach Anspruch 2, dadurch gekennzeichnet, daß den Vorsprüngen (17) Einbuchtungen (13) auf der Außenseite der Lagernabe (12) gegenüberstehen.3. Bearing hub according to claim 2, characterized in that the projections (17) facing indentations (13) on the outside of the bearing hub (12). 4. Lagernabe nach Anspruch 3, dadurch gekennzeichnet, daß der Querschnitt der Lagernabe (12) entlang ihrem Umfang mäanderförmig ausgebildet ist.4. Bearing hub according to claim 3, characterized in that the cross section the bearing hub (12) is designed in a meandering shape along its circumference. 5. Lagernabe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die radiale Kraft, mit der die Vorsprünge (17) auf den Außenring (15) drücken, so bemessen ist, daß sie im Betrieb bei den vorkommenden niedrigsten Temperaturen nicht einen unzulässig hohen, zu einem Blockieren des Wälzlagers (13) führenden, und bei den vorkommenden höchsten Temperaturen nicht einen unzulässig niedrigen, zu einem Spiel zwischen dem Außenring (15) und den Vorsprüngen (17) führenden, Wert annimmt.5. Bearing hub according to one of the preceding claims, characterized in that that the radial force with which the projections (17) press on the outer ring (15), is dimensioned so that it operates at the lowest possible temperatures not an impermissibly high level that could block the rolling bearing (13), and at the highest temperatures that occur, not an impermissibly low, leading to a game between the outer ring (15) and the projections (17), value accepts. 6. Lagernabe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Lagerbüchse (12) Bestandteil eines Lagerschilds (11) aus Blech und aus diesem Lagerschild (11) durch einen angemessenen Formgebungsvorgang ausgeformt ist.6. Bearing hub according to one of the preceding claims, characterized in that that the bearing bush (12) is part of a bearing plate (11) made of sheet metal and from this End shield (11) is formed by an appropriate molding process. 7. Lagernabe nach Anspruch 6, dadurch gekennzeichnet, daß das Lagerschild (11) membranartig ausgebildet ist.7. Bearing hub according to claim 6, characterized in that the bearing plate (11) is designed like a membrane.
DE19782846555 1978-10-26 1978-10-26 Socket for electrical machine roller bearing - has projections acting as springs pressing radially against outer ring of roller bearing of generator in vehicle Withdrawn DE2846555A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19782846555 DE2846555A1 (en) 1978-10-26 1978-10-26 Socket for electrical machine roller bearing - has projections acting as springs pressing radially against outer ring of roller bearing of generator in vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782846555 DE2846555A1 (en) 1978-10-26 1978-10-26 Socket for electrical machine roller bearing - has projections acting as springs pressing radially against outer ring of roller bearing of generator in vehicle

Publications (1)

Publication Number Publication Date
DE2846555A1 true DE2846555A1 (en) 1980-05-08

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ID=6053127

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19782846555 Withdrawn DE2846555A1 (en) 1978-10-26 1978-10-26 Socket for electrical machine roller bearing - has projections acting as springs pressing radially against outer ring of roller bearing of generator in vehicle

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DE (1) DE2846555A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0287309A2 (en) * 1987-04-13 1988-10-19 Skf (U.K.) Limited A bearing assembly
US5791585A (en) * 1996-09-10 1998-08-11 Knight; Michael W. Apparatus for maintaining the position of a rotating bobbin relative to a transformer core leg
DE19819847A1 (en) * 1998-05-05 1999-11-11 Spindelfabrik Neudorf Gmbh Bush for the roller bearings of a spindle at a textile machine
DE102008017880A1 (en) 2008-04-09 2009-10-15 Schaeffler Kg Bearing shield i.e. bearing bush, for use with transmission of motor vehicle, has aggregates provided in zones and/or in areas with high loads during operation, where aggregates are formed by areas reinforced against areas with less load
WO2021197532A1 (en) * 2020-03-31 2021-10-07 Schaeffler Technologies AG & Co. KG Friction clutch with a cover made from sheet metal with folded anti-friction bearing seats, transmission arrangement and production method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0287309A2 (en) * 1987-04-13 1988-10-19 Skf (U.K.) Limited A bearing assembly
EP0287309A3 (en) * 1987-04-13 1989-06-21 Skf (U.K.) Limited A bearing assembly
US5791585A (en) * 1996-09-10 1998-08-11 Knight; Michael W. Apparatus for maintaining the position of a rotating bobbin relative to a transformer core leg
DE19819847A1 (en) * 1998-05-05 1999-11-11 Spindelfabrik Neudorf Gmbh Bush for the roller bearings of a spindle at a textile machine
DE102008017880A1 (en) 2008-04-09 2009-10-15 Schaeffler Kg Bearing shield i.e. bearing bush, for use with transmission of motor vehicle, has aggregates provided in zones and/or in areas with high loads during operation, where aggregates are formed by areas reinforced against areas with less load
WO2021197532A1 (en) * 2020-03-31 2021-10-07 Schaeffler Technologies AG & Co. KG Friction clutch with a cover made from sheet metal with folded anti-friction bearing seats, transmission arrangement and production method

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