DE1302068B - Aerodynamic bearing - Google Patents

Aerodynamic bearing

Info

Publication number
DE1302068B
DE1302068B DEG36330A DEG0036330A DE1302068B DE 1302068 B DE1302068 B DE 1302068B DE G36330 A DEG36330 A DE G36330A DE G0036330 A DEG0036330 A DE G0036330A DE 1302068 B DE1302068 B DE 1302068B
Authority
DE
Germany
Prior art keywords
pockets
rotor
stator
aerodynamic bearing
cone
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.)
Pending
Application number
DEG36330A
Other languages
German (de)
Inventor
Parker Bernard
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.)
General Precision Inc
Original Assignee
General Precision Inc
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 General Precision Inc filed Critical General Precision Inc
Publication of DE1302068B publication Critical patent/DE1302068B/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02Parts of sliding-contact bearings
    • F16C33/04Brasses; Bushes; Linings
    • F16C33/06Sliding surface mainly made of metal
    • F16C33/10Construction relative to lubrication
    • F16C33/1025Construction relative to lubrication with liquid, e.g. oil, as lubricant
    • F16C33/106Details of distribution or circulation inside the bearings, e.g. details of the bearing surfaces to affect flow or pressure of the liquid
    • F16C33/1075Wedges, e.g. ramps or lobes, for generating pressure
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C19/00Gyroscopes; Turn-sensitive devices using vibrating masses; Turn-sensitive devices without moving masses; Measuring angular rate using gyroscopic effects
    • G01C19/02Rotary gyroscopes
    • G01C19/04Details
    • G01C19/16Suspensions; Bearings
    • G01C19/20Suspensions; Bearings in fluid
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2370/00Apparatus relating to physics, e.g. instruments

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)
  • Sliding-Contact Bearings (AREA)

Description

Die Erfindung betrifft ein aerodynamisches Lager für einen Rotor in einem Stator, bei dem zwei Kegelstumpfflächen am Rotor, deren Kegelspitzen einander zugekehrt sind, mit zwei dazu jeweils parallelen Kegelstumpfflächen am Stator zusammenwirken.The invention relates to an aerodynamic bearing for a rotor in a stator, in which two truncated cone surfaces on the rotor, their cone tips each other are facing, cooperate with two parallel frustoconical surfaces on the stator.

Es ist bekannt, bei aerodynamischen Gleitlagern, bei denen sich ein Zapfen in einer Lagerschale dreht und bei dem sich bei hoher Umlaufgeschwindigkeit im Spalt zwischen Zapfen und Schale selbst ein Luftfilm bildet, Zapfen oder Schale oder auch beide Teile aus nichtmetallischem Werkstoff, wie Graphitkohle oder keramischem Stoff, herzustellen.It is known in aerodynamic plain bearings in which a Spigot rotates in a bearing shell and in which it rotates at high rotational speed a film of air itself forms in the gap between the cone and the shell, cone or shell or both parts made of non-metallic material, such as carbon graphite or ceramic Fabric.

Auch beim Gegenstand der Erfindung wird von dieser bekannten Maßnahme Gebrauch gemacht, allerdings zum Zweck der Kostenersparnis in der Abwandlung, daß nicht die ineinandergelagerten Kegelstümpfe im ganzen aus einem solchen nicht metallischen Werkstoff hergestellt werden, sondern mit einem harten überzug, insbesondere aus keramischem Material, versehen werden.This known measure is also used in the subject matter of the invention Made use, however, for the purpose of saving costs in the modification that not the nested truncated cones as a whole made of such a non-metallic one Material are made, but with a hard coating, in particular from ceramic material.

Ziel der Erfindung ist eine verbesserte Speicherung der den Film bildenden Luft oder des Gases zwischen den Lagerflächen, um hierdurch die Lagerleistung zu erhöhen. Versuche haben ergeben, daß eine solche verbesserte Speicherung in dem Luftfilm erreicht wird, wenn man die parallelen Kegelflächen nicht glatt ausbildet, sondern mit Taschen versieht.The aim of the invention is an improved storage of the film forming Air or the gas between the bearing surfaces in order to thereby increase the bearing performance raise. Experiments have shown that such an improved storage in the A film of air is achieved if the parallel conical surfaces are not smoothly formed, but provided with pockets.

Die Erfindung bezieht sich auf ein aerodynamisches Lager für einen in einem Stator mit hoher Umdrehungsgeschwindigkeit laufenden Rotor, bei dem zwei Kegelstumpfflächen am Rotor, deren Kegelspitzen einander zugekehrt sind, mit zwei dazu jeweils parallelen Kegelstumpfflächen am Stator zusammenwirken und bei dem diese Kegelstümpfe auf den aneinander vorbeigleitenden Oberflächen mit einem harten Überzug, insbesondere aus keramischem Material versehen sind.The invention relates to an aerodynamic bearing for one rotor rotating at high speed in a stator with two Truncated cone surfaces on the rotor, the cone tips of which are facing each other, with two cooperate to each parallel frustoconical surfaces on the stator and in the these truncated cones on the surfaces sliding past each other with a hard one Coating, in particular made of ceramic material.

Die Erfindung besteht darin, daß in diese harten Überzüge mehrere, in gleichem Abstand voneinander angeordnete flache Taschen eingeschnitten sind, wobei die Taschen am Stator radial auf die Taschen am Rotor ausgerichtet sind.The invention consists in that several, equally spaced flat pockets are incised, wherein the pockets on the stator are radially aligned with the pockets on the rotor.

In der Zeichnung wird die Erfindung beispielsweise erläutert. Es zeigt F i g. 1 eine schematische Darstellung eines aerodynamischen Doppelkonuslagers im Schnitt, F i g. 2 eine Tasche gemäß der Erfindung in Draufsicht, F i g. 3 einen Schnitt durch die Tasche gemäß F i g. 2 entlang der Linie 3-3. In F i g. 1 ist mit 1 schematisch das Rotorgehäuse z. B. eines Kreisels angedeutet, das das Schwungrad 2 trägt. Gelagert ist es mit den beiden Konusflächen 3 a -und 3 b auf den Konusflächen 4 a und 4 b der Konusse 5 a und 5 b, die am Stator sitzen. Einzelheiten des Aufbaus sind als für die Erfindung unwesentlich nicht dargestellt. Bei umlaufendem Rotor wird, wie bekannt, Luft oder ein Gas zwischen die gegeneinander rotierenden Konusflächen gesaugt, die dort einen Luft- oder Gasfilm bildet.The invention is illustrated by way of example in the drawing. It shows F i g. 1 shows a schematic representation of an aerodynamic double-cone bearing in section, FIG. 2 shows a bag according to the invention in plan view, FIG. 3 shows a section through the bag according to FIG. 2 along line 3-3. In Fig. 1 is with 1 schematically the rotor housing z. B. indicated a gyro that carries the flywheel 2. It is mounted with the two conical surfaces 3 a and 3 b on the conical surfaces 4 a and 4 b of the cones 5 a and 5 b, which sit on the stator. Details of the structure are not shown as being unimportant for the invention. As is known, when the rotor is rotating, air or a gas is sucked in between the conical surfaces rotating against each other, which forms an air or gas film there.

Diese den Luftfilm begrenzenden Konusflächen sind mit einem harten überzug, insbesondere aus keramischem Material versehen.These conical surfaces delimiting the air film have a hard surface coating, in particular made of ceramic material.

Nach der Erfindung sind nun in diese die Konusflächen des Rotors und des Stators bekleidenden überzüge Vertiefungen oder Taschen 6 geschnitten, wie dies die F i g. 2 und 3 veranschaulichen. Die Taschen haben in dem gezeigten Beispiel Trapezform. Jedoch sind auch andere Formen möglich. Wesentlich ist, daß die Taschen verhältnismäßig flach sind. Die Tiefe liegt in der Größenordnung von 0,0025 bis 0,00375 mm. Die Taschen am Stator sind radial auf die Taschen am Rotor ausgerichtet. Die Taschen unterstützen durch ihre Speicherwirkung das Halten der Luft oder des Gases zwischen den gegeneinander rotierenden Konusflächen. Dadurch ist eine maximale Lagerleistung zum Halten des Rotors sichergestellt.According to the invention, the conical surfaces of the rotor and are in this of the stator cladding recesses or pockets 6 cut like this the F i g. Figures 2 and 3 illustrate. In the example shown, the bags have Trapezoidal shape. However, other shapes are also possible. It is essential that the pockets are relatively flat. The depth is on the order of 0.0025 to 0.00375 mm. The pockets on the stator are radially aligned with the pockets on the rotor. The pockets support the retention of air or the through their storage effect Gas between the counter-rotating conical surfaces. This is a maximum Ensured bearing performance to hold the rotor.

Claims (2)

Patentansprüche: 1. Aerodynamisches Lager für einen in einem Stator mit hoher Umdrehungsgeschwindigkeit laufenden Rotor, bei dem zwei Kegelstumpfflächen am Rotor, deren Kegelspitzen einander zugekehrt sind, mit zwei dazu jeweils parallelen Kegelstumpfflächen am Stator zusammenwirken und bei dem diese Kegelstümpfe auf den aneinander vorbeigleitenden Oberflächen mit einem harten überzug, insbesondere aus keramischem Material versehen sind, d a d u r c h g e k e n n -z e i c h n e t, daß in diese überzüge mehrere, in gleichem Abstand voneinander angeordnete flache Taschen (6 in F i g. 2 und 3) eingeschnitten sind, wobei die Taschen am Stator radial auf die Taschen am Rotor ausgerichtet sind. Claims: 1. Aerodynamic bearing for one in a stator high-speed rotor with two frustoconical surfaces on the rotor, the cone tips of which are facing each other, with two parallel to each other Truncated cone surfaces cooperate on the stator and in which these truncated cones on the surfaces sliding past each other with a hard coating, in particular made of are provided with ceramic material, that in these coatings several, equally spaced flat Pockets (6 in F i g. 2 and 3) are cut, the pockets on the stator being radial aligned with the pockets on the rotor. 2. Aerodynamisches Lager nach Anspruch 1, dadurch gekennzeichnet, daß die in die harten überzüge eingeschnittenen Taschen Trapezform haben.2. Aerodynamic bearing according to claim 1, characterized in that the pockets cut into the hard coatings Have a trapezoidal shape.
DEG36330A 1961-11-07 1962-11-06 Aerodynamic bearing Pending DE1302068B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US15075261A 1961-11-07 1961-11-07

Publications (1)

Publication Number Publication Date
DE1302068B true DE1302068B (en) 1969-11-13

Family

ID=22535851

Family Applications (1)

Application Number Title Priority Date Filing Date
DEG36330A Pending DE1302068B (en) 1961-11-07 1962-11-06 Aerodynamic bearing

Country Status (2)

Country Link
DE (1) DE1302068B (en)
GB (1) GB963175A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2618542A1 (en) * 1976-04-28 1977-11-10 Horst Walter Pollehn Combined axial and radial shaft bearing - has stepped holes with tapered thrust face and slightly tapered portion on small dia. shaft
DE3635837A1 (en) * 1986-10-22 1988-04-28 Krupp Gmbh SLIDING BEARING WITH EXPANSION COMPENSATING ELEMENTS

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1337742A (en) * 1916-05-04 1920-04-20 Jr William George Abbott Gas-lubricated bearing
US2086896A (en) * 1934-07-11 1937-07-13 Sperry Gyroscope Co Inc Air supported gyroscope
DE965772C (en) * 1949-06-09 1957-06-19 Friedrich Allendorff Dipl Ing Aerodynamic slide bearing for high speeds
US2928281A (en) * 1958-05-26 1960-03-15 Honeywell Regulator Co Sensitive instrument

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1337742A (en) * 1916-05-04 1920-04-20 Jr William George Abbott Gas-lubricated bearing
US2086896A (en) * 1934-07-11 1937-07-13 Sperry Gyroscope Co Inc Air supported gyroscope
DE965772C (en) * 1949-06-09 1957-06-19 Friedrich Allendorff Dipl Ing Aerodynamic slide bearing for high speeds
US2928281A (en) * 1958-05-26 1960-03-15 Honeywell Regulator Co Sensitive instrument

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2618542A1 (en) * 1976-04-28 1977-11-10 Horst Walter Pollehn Combined axial and radial shaft bearing - has stepped holes with tapered thrust face and slightly tapered portion on small dia. shaft
DE3635837A1 (en) * 1986-10-22 1988-04-28 Krupp Gmbh SLIDING BEARING WITH EXPANSION COMPENSATING ELEMENTS

Also Published As

Publication number Publication date
GB963175A (en) 1964-07-08

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