DE803736C - Rolling bearings for high speeds - Google Patents

Rolling bearings for high speeds

Info

Publication number
DE803736C
DE803736C DEP8732D DEP0008732D DE803736C DE 803736 C DE803736 C DE 803736C DE P8732 D DEP8732 D DE P8732D DE P0008732 D DEP0008732 D DE P0008732D DE 803736 C DE803736 C DE 803736C
Authority
DE
Germany
Prior art keywords
rolling
shaft
rolling elements
high speeds
rolling bearings
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
Application number
DEP8732D
Other languages
German (de)
Inventor
Dr-Ing Otto Lutz
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.)
OTTO LUTZ DR ING
Original Assignee
OTTO LUTZ DR ING
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 OTTO LUTZ DR ING filed Critical OTTO LUTZ DR ING
Priority to DEP8732D priority Critical patent/DE803736C/en
Application granted granted Critical
Publication of DE803736C publication Critical patent/DE803736C/en
Expired 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
    • 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
    • F16C19/24—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 radial load mainly
    • F16C19/26—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 radial load mainly with a single row 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/46—Cages for rollers or needles
    • F16C33/52—Cages for rollers or needles with no part entering between, or touching, the bearing surfaces of the rollers

Landscapes

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

Description

Wälzlager für Wellen mit hohen Drehzahlen leiden unter der Schwierigkeit, daß die Wälzkörper (Kugeln, Rollen) mit außergewöhnlich hohen Eigendrehzahlen sich bewegen müssen, daß durch die auftretenden Zentrifugalkräfte zusätzliche Beanspruchungen auftreten, die ein Vielfaches der Lagerkraft ausmachen, und daß dadurch die Wälzkörper am einwandfreienArbeitengehindertwerden. Als Beispiel sei angeführt, daß bei üblichen Lagern (Hochschulterlager oder Zylinderrollenlager) die Wälzkörper jeweils mit der mehrfachen Drehzahl der Welle sich drehen; bei einer Wellendrehzahl von 50 000 je Minute müßten sich also die Wälzkörper mit 150000 bis 200000 Umdrehungen je Minute drehen.Rolling bearings for shafts with high speeds suffer from the difficulty that the rolling elements (balls, rollers) have to move at exceptionally high intrinsic speeds, that the centrifugal forces that occur cause additional stresses which make up a multiple of the bearing force, and that this prevents the rolling elements from working properly . As an example it should be mentioned that in conventional bearings (high shoulder bearings or cylindrical roller bearings) the rolling elements rotate at multiple times the speed of the shaft; at a shaft speed of 50,000 per minute, the rolling elements would have to rotate at 150,000 to 200,000 revolutions per minute.

Die Erfindung beseitigt diesen Nachteil, indem sie die Wälzkörper konstruktiv so anordnet, daß ihre Drehzahl nur einen Bruchteil der Wellendrehzahl beträgt.The invention overcomes this disadvantage by reducing the rolling elements structurally arranged so that their speed is only a fraction of the shaft speed amounts to.

In Fig. i ist eine Ausführung beispielsweise dargestellt.In Fig. I, an embodiment is shown for example.

Die Wälzkörperdurchmesser i sind größer als diejenigen der Welle 2, und ihre kleinen Zapfen 3 sind in einem entsprechenden Käfig 4 gelagert, so daß die richtige Lage der Wälzkörper immer gesichert ist. Die Wälzkörper rollen ihrerseits im Außenring 5 in bekannter Weise ab.The rolling element diameters i are larger than those of shaft 2, and their small pins 3 are stored in a corresponding cage 4, so that the correct position of the rolling elements is always ensured. The rolling elements roll for their part in the outer ring 5 in a known manner.

Mit einem so gestalteten Lager, dessen Wälzkörper sich nur mit einem Bruchteil der Wellendrehzahl drehen, kann man bereits gute Erfolge bei hohen Wellendrehzahlen erzielen. Für höchste Drehzahlen kommt eine weitere Ausgestaltung nach Fig. 2 in Frage. Hier ist die Welle 2 ebenfalls in der Mitte der großen Wälzkörper i gelagert, diese rollen aber nicht im Außenring 5 ab, sondern die kleinen Zapfen 3 rollen auf entsprechenden Schultern eines besonders hierfür vorgesehenen Zwischenringes. Hierdurch entsteht eine doppelte Untersetzung zwischen Welle und Wälzkörper, womit bei extremen Wellendrehzahlen bis zu ioo ooo je Minute recht erträgliche Wälzkörperdrehzahlen von 6 bis 8ooo je Minute bei üblichen Abmessungen erzielt werden können. Mit einem solchen Differentialwälzlager wird die Lösung vieler Konstruktionsaufgaben bei schnell laufenden Maschinen möglich.With a bearing designed in this way, the rolling elements of which only come into contact with one If you turn a fraction of the shaft speed, you can already achieve good results at high shaft speeds achieve. A further embodiment according to FIG. 2 comes in for the highest speeds Question. Here the shaft 2 is also mounted in the middle of the large rolling elements i, However, these do not roll off in the outer ring 5, but rather the small pins 3 roll up corresponding shoulders of an intermediate ring specially provided for this purpose. Through this there is a double reduction between the shaft and the rolling element, which in extreme cases Shaft speeds of up to 100,000 per minute are quite tolerable rolling element speeds from 6 to 8,000 per minute can be achieved with conventional dimensions. With a Such differential rolling bearings will quickly solve many design problems running machines possible.

Claims (3)

PATENTANSPRÜCHE: i. Wälzlager für hohe Drehzahlen, dadurch gekennzeichnet, daß die Durchmesser der auf der Welle (2) abrollenden Wälzkörper (i) größer sind als derjenige der Welle (2). PATENT CLAIMS: i. Rolling bearings for high speeds, characterized in that the diameter of the rolling elements (i) rolling on the shaft (2) are larger than that of the shaft (2). 2. Wälzlager nach Anspruch i, dadurch gekennzeichnet, daß die Wälzkörper (i) mittels seitlich vorstehender Zapfen (3) in einem die richtige Lage der Wälzkörper sichernden Käfig (4) gelagert sind. 2. Rolling bearing according to claim i, characterized in that that the rolling elements (i) by means of laterally protruding pins (3) in one the correct one Position of the rolling elements securing cage (4) are stored. 3. Wälzlager nach Anspruch i, dadurch gekennzeichnet, daß die Wälzkörper mit ihrem großen Walzenkörper (i) auf der Welle (2), mit ihrem kleinen Zapfen (3) aber in dem Außenring (5) abrollen, der zu diesem Zweck die Wälzkörper (i) U-förmig umschließt.3. Rolling bearing according to claim i, characterized in that the rolling bodies with their large roller bodies (i) roll on the shaft (2), with its small pin (3) but in the outer ring (5), which for this purpose encloses the rolling elements (i) in a U-shape.
DEP8732D 1948-10-02 1948-10-02 Rolling bearings for high speeds Expired DE803736C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP8732D DE803736C (en) 1948-10-02 1948-10-02 Rolling bearings for high speeds

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP8732D DE803736C (en) 1948-10-02 1948-10-02 Rolling bearings for high speeds

Publications (1)

Publication Number Publication Date
DE803736C true DE803736C (en) 1951-04-09

Family

ID=7361858

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP8732D Expired DE803736C (en) 1948-10-02 1948-10-02 Rolling bearings for high speeds

Country Status (1)

Country Link
DE (1) DE803736C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE973849C (en) * 1951-07-03 1960-06-23 Hermann Gaub Grinding spindle bearings for high speeds
DE3744522A1 (en) * 1987-12-24 1989-07-06 Erwin Junker STORAGE FOR HIGH-SPEED SPINDLES OF MACHINE TOOLS
DE4025913A1 (en) * 1989-08-17 1991-02-21 Gye Hwan Bae BEARING ARRANGEMENT FOR HIGH SPEED DRIVABLE SHAFTS

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE973849C (en) * 1951-07-03 1960-06-23 Hermann Gaub Grinding spindle bearings for high speeds
DE3744522A1 (en) * 1987-12-24 1989-07-06 Erwin Junker STORAGE FOR HIGH-SPEED SPINDLES OF MACHINE TOOLS
DE4025913A1 (en) * 1989-08-17 1991-02-21 Gye Hwan Bae BEARING ARRANGEMENT FOR HIGH SPEED DRIVABLE SHAFTS

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