DE3636941C2 - Stationary ceramic ball for spherical thrust bearings - Google Patents
Stationary ceramic ball for spherical thrust bearingsInfo
- Publication number
- DE3636941C2 DE3636941C2 DE3636941A DE3636941A DE3636941C2 DE 3636941 C2 DE3636941 C2 DE 3636941C2 DE 3636941 A DE3636941 A DE 3636941A DE 3636941 A DE3636941 A DE 3636941A DE 3636941 C2 DE3636941 C2 DE 3636941C2
- Authority
- DE
- Germany
- Prior art keywords
- ball
- bearing column
- spherical thrust
- ceramic ball
- bearing
- 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.)
- Expired - Lifetime
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
- F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
- F16C23/02—Sliding-contact bearings
- F16C23/04—Sliding-contact bearings self-adjusting
- F16C23/043—Sliding-contact bearings self-adjusting with spherical surfaces, e.g. spherical plain bearings
-
- 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
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
- F16C17/08—Sliding-contact bearings for exclusively rotary movement for axial load only for supporting the end face of a shaft or other member, e.g. footstep bearings
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- 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
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/043—Sliding surface consisting mainly of ceramics, cermets or hard carbon, e.g. diamond like carbon [DLC]
-
- 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
- H02K5/167—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings
-
- 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
- F16C2360/00—Engines or pumps
- F16C2360/44—Centrifugal pumps
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Sliding-Contact Bearings (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
Keramikkugeln für sphärische Drucklager, die über eine Lagersäule mit einem stationären Teil eine Einheit bilden, sind für die unterschiedlichsten Einsatzgebiete bekannt.Ceramic balls for spherical thrust bearings, which have a bearing column with a stationary part form a unit are for the most different areas of application known.
Die FR 22 89 162 beschreibt beispielsweise Befestigungsmöglichkeiten für die Keramikkugel eines Hüftgelenkes in einem Knochen.FR 22 89 162, for example, describes attachment options for the Ceramic ball of a hip joint in a bone.
Elektromotoren oder auch Magnetkupplungen mit sphärischem Luftspalt erlangen in Verbindung mit wellenlosen Kreiselpumpen zunehmend an Bedeutung. An die Stelle einer Welle mit hochgenauen Lagerbuchsen tritt bei dieser Maschinenart eine einzige Kugel, die stationär angeordnet ist und zusammen mit einem konkaven Gleitpartner das Lager bildet.Electric motors or magnetic clutches with a spherical air gap acquire in Connection with shaftless centrifugal pumps is becoming increasingly important. In place One shaft with high-precision bearing bushes occurs with this type of machine Ball that is stationary and together with a concave sliding partner forms the camp.
Im Gegensatz zu Lagern mit zylindrischem Lagerspalt, in denen sich ein tragender Schmiermittelfilm ausbildet, arbeiten sphärische Lager in der Regel unter halbtrockener Reibung, was bisher zu bedeutendem Verschleiß führt. Solange der Verschleiß nur auf der Seite des konkaven Lagerpartners auftritt, bildet sich immer wieder ein exakt sphärischer Lagerspalt ab. Erfährt jedoch die Kugel auch nur die geringste Abweichung von der Kugelgeometrie, so setzt progressiv ansteigender Verschleiß des konkaven Lagerpartners ein.In contrast to bearings with a cylindrical bearing gap, in which there is a load bearing Forms lubricant film, spherical bearings usually work under semi-dry Friction, which has led to significant wear so far. As long as the wear and tear only on occurs on the side of the concave bearing partner, always forms an exact spherical bearing gap. However, the ball experiences only the slightest Deviation from the ball geometry, so progressively increasing wear of the concave bearing partner.
Zur Vermeidung dieses Nachteils wurden bei Heizungspumpen Kugeln aus Hartkeramik, z. B. aus Siliziumkarbid eingesetzt. Bei diesen Pumpen ist jedoch die Kugel in eine metallische Umfassung eingesetzt, die über den Äquator der Kugel hinüberreicht. Mit dieser Lösung lassen sich deshalb Lagersysteme, bei denen der konkave Lagerpartner zweiteilig ausgebildet über den Äquator hinübergreift, nicht verwirklichen.To avoid this disadvantage, balls were used in heating pumps Hard ceramic, e.g. B. made of silicon carbide. With these pumps, however, is the Sphere inserted into a metallic enclosure over the equator of the sphere handed over. With this solution, therefore, storage systems in which the concave bearing partner formed in two parts, does not reach over the equator realize.
Es ist Aufgabe der Erfindung, oben genannten Nachteil zu vermeiden. Gemäß der Erfindung wird die Kugel mit einer Sacklochbohrung versehen, in die ein metallischer Körper, der mit der Lagersäule eine Einheit bildet, hineingreift. Die Erfindung löst auch das Problem der axialen Fixierung der Kugel durch metallische oder organische Substanzen. Die konstruktiven Lösungen sollen anhand der Figuren beschrieben werden.It is an object of the invention to avoid the disadvantage mentioned above. According to the Invention, the ball is provided with a blind hole into which a metallic Body that forms a unit with the bearing column. The invention also solves the problem of the axial fixation of the ball by metallic or organic Substances. The constructive solutions are to be described with the aid of the figures become.
Fig. 1 zeigt eine Lösung unter Verwendung eines Spiralstiftes. Fig. 1 shows a solution using a spiral pen.
Fig. 2 zeigt eine zylindrische Ausbildung des in die Kugel hineinragenden Teiles. Fig. 2 shows a cylindrical configuration of the part protruding into the ball.
Fig. 3 zeigt einen Querschnitt durch Fig. 2. FIG. 3 shows a cross section through FIG. 2.
Fig. 4 zeigt eine Lösung mit einem in flüssiger Phase eingebrachten Metallkern. Fig. 4 shows a solution having a stopper introduced in the liquid phase metal core.
In Fig. 1 ist der obere Bereich der Lagersäule 2 mit einem Wulst versehen, auf dem sich die Kugel 21 abstützt. Die Bohrung weist an ihrer Öffnung eine Erweiterung auf, in die ein weicher, gegen die Förderflüssigkeit resistenter Dichtring 5 eingelegt ist. Am Sockelbereich 6 wird die Lagersäule mit dem Pumpengehäuse verbunden. Ein Spiralstift 23 aus Federstahl erzeugt Reibschluß in der Bohrung der Kugel 21 und ist durch die Weichdichtung 5 vom Fördermedium getrennt. Eine Tellerfeder 27 wird axial so weit in Richtung der Kugel verformt, daß sie den Spiralstift 23 mit ausreichend großer Kraft anzieht, so daß die Kugel 21 auf den Wulst der Lagersäule 2 gedrückt wird.In Fig. 1, the upper region of the bearing column 2 is provided with a bead on which the ball 21 is supported. At its opening, the bore has an extension into which a soft sealing ring 5 , which is resistant to the conveying liquid, is inserted. At the base area 6 , the bearing column is connected to the pump housing. A spiral pin 23 made of spring steel creates frictional engagement in the bore of the ball 21 and is separated from the medium by the soft seal 5 . A plate spring 27 is deformed axially so far in the direction of the ball that it pulls the spiral pin 23 with sufficient force so that the ball 21 is pressed onto the bead of the bearing column 2 .
Fig. 2 und 3 zeigen eine Lösung, bei welcher eine Rille 37 an die Stelle einer Bohrung tritt. In diese Rille wird der sechskantig verformte Endbereich 33 der Lagersäule 32 eingeschoben. Dieser übt einen starken Reibschluß gegenüber dem verbliebenen Zylinder 38 aus. Eine bevorzugte Ausführungsform sieht vor, daß die zwischen dem Kern 38 und den Flächen des Sechskantes 33 verbleibenden Zwickelräume 35 mit einem Metallkleber hoher Festigkeit gefüllt werden, während die nach außen weisenden Zwickelräume 36 mit einer gegen die Förderflüssigkeit resistenten Substanz, z. B. Silikongummi gefüllt werden. Figs. 2 and 3 show a solution in which a groove takes the place of a bore 37. The hexagonally deformed end region 33 of the bearing column 32 is inserted into this groove. This exerts a strong frictional engagement with the remaining cylinder 38 . A preferred embodiment provides that the gusset spaces 35 remaining between the core 38 and the surfaces of the hexagon 33 are filled with a high-strength metal adhesive, while the gusset spaces 36 facing outwards are filled with a substance which is resistant to the conveying liquid, e.g. B. silicone rubber can be filled.
Fig. 4 zeigt eine Lösung, bei welcher die Bohrung einen Hinterschnitt aufweist, bei der also der Durchmesser im Endbereich 57 größer ist, als die Öffnung. In diese Bohrung wird ein Kern 58 aus Metall oder aus einer Metallegierung in flüssiger oder knetbarer Form eingebracht, die annähernd den gleichen thermischen Ausdehnungskoeffizienten aufweist, wie die Kugel 51. Die Lagersäule 52 ist geschlossen ausgebildet und wird längs der Naht 59 mit einem gegen die jeweilige Förderflüssigkeit resistenten Lot an den Kern 58 gelötet. Fig. 4 shows a solution in which the bore has an undercut, in which the diameter in the end region 57 is larger than the opening. A core 58 made of metal or a metal alloy in liquid or kneadable form is introduced into this bore and has approximately the same thermal expansion coefficient as the ball 51 . The bearing column 52 is designed to be closed and is soldered to the core 58 along the seam 59 with a solder which is resistant to the respective conveying liquid.
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3636941A DE3636941C2 (en) | 1986-10-30 | 1986-10-30 | Stationary ceramic ball for spherical thrust bearings |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3636941A DE3636941C2 (en) | 1986-10-30 | 1986-10-30 | Stationary ceramic ball for spherical thrust bearings |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3636941A1 DE3636941A1 (en) | 1988-05-05 |
DE3636941C2 true DE3636941C2 (en) | 1995-11-30 |
Family
ID=6312811
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE3636941A Expired - Lifetime DE3636941C2 (en) | 1986-10-30 | 1986-10-30 | Stationary ceramic ball for spherical thrust bearings |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3636941C2 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3744101C2 (en) * | 1987-12-24 | 1998-07-30 | Ludin Ludwig | Bearing system with ceramic bearing ball for small pumps with spherical drive |
DE4434380C2 (en) * | 1994-09-16 | 1998-03-26 | Liebherr Aerospace Gmbh | Device for converting a rotational or swiveling movement into a translational movement |
DE102004008158A1 (en) | 2004-02-12 | 2005-09-22 | Laing, Oliver | Spherical bearing, electric motor and circulation pump |
DE102012211444A1 (en) * | 2012-07-02 | 2014-01-02 | Mahle International Gmbh | Actuating device, ball joint and manufacturing method |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1019871B (en) * | 1954-05-21 | 1957-11-21 | Kugelfischer G Schaefer & Co | Device to reduce the running noise of a roller bearing |
DE1804937U (en) * | 1959-08-29 | 1960-01-28 | Geier Werke G M B H | PIVOT BEARING FOR A CRANK ROD. |
US3401963A (en) * | 1966-05-16 | 1968-09-17 | Moog Industries Inc | Ball stud and method of making same |
DE1788173A1 (en) * | 1966-09-07 | 1975-12-18 | Standard Magnet Ag | STORAGE CONTAINING BALL AND PAN |
AT307171B (en) * | 1970-07-01 | 1973-05-10 | Beteiligungs Ag Haustechnik | Spherical bearing |
DE2451275C2 (en) * | 1974-10-29 | 1982-08-26 | Feldmühle AG, 4000 Düsseldorf | Head part of a hip joint prosthesis to be implanted |
EP0186856B1 (en) * | 1984-12-25 | 1989-06-14 | Hitachi, Ltd. | Joint having ball and shaft coupled through plastic deformation |
-
1986
- 1986-10-30 DE DE3636941A patent/DE3636941C2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE3636941A1 (en) | 1988-05-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8141 | Disposal/no request for examination | ||
8110 | Request for examination paragraph 44 | ||
8170 | Reinstatement of the former position | ||
8181 | Inventor (new situation) |
Free format text: LAING, KARSTEN, DIPL.-ING., 71686 REMSECK, DE LAING, NIKOLAUS, 71686 REMSECK, DE |
|
D2 | Grant after examination | ||
8364 | No opposition during term of opposition |