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DE2852179A1 - Worm end bearing assembly - has threaded inner ring rotating with worm and two outer rings engaging balls - Google Patents

Worm end bearing assembly - has threaded inner ring rotating with worm and two outer rings engaging balls

Info

Publication number
DE2852179A1
DE2852179A1 DE19782852179 DE2852179A DE2852179A1 DE 2852179 A1 DE2852179 A1 DE 2852179A1 DE 19782852179 DE19782852179 DE 19782852179 DE 2852179 A DE2852179 A DE 2852179A DE 2852179 A1 DE2852179 A1 DE 2852179A1
Authority
DE
Germany
Prior art keywords
worm
inner ring
ball screw
inner race
end 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.)
Withdrawn
Application number
DE19782852179
Other languages
German (de)
Inventor
Juergen Ing Grad Oetjen
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.)
INA Waelzlager Schaeffler OHG
Original Assignee
Industriewerk Schaeffler OHG
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 Industriewerk Schaeffler OHG filed Critical Industriewerk Schaeffler OHG
Priority to DE19782852179 priority Critical patent/DE2852179A1/en
Publication of DE2852179A1 publication Critical patent/DE2852179A1/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Withdrawn legal-status Critical Current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
    • 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
    • F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • F16C35/063—Fixing them on the shaft
    • F16C35/0635—Fixing them on the shaft the bore of the inner ring being of special non-cylindrical shape which co-operates with a complementary shape on the shaft, e.g. teeth, polygonal sections
    • 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
    • F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
    • F16C19/16—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
    • F16C19/163—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls with angular contact
    • F16C19/166—Four-point-contact ball 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • 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
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
    • F16H25/2204—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with 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
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)
  • Support Of The Bearing (AREA)

Abstract

A worm (1) runs in an end bearing (3) which consists of an inner ring (4) and two outer half-rings (5, 6) separated from it by balls (7). The inner ring (4) has internal threads (8) to allow it to mate with the threads (2) of the worm (1). It also has a projecting outer collar (9), through which a pin (12) passes, and thence into the worm (1), to lock the two components together. There is no need for production of special shapes on the worm.

Description

Wälzlager zur endseitigen Lagerung einer mit GewindegängenRolling bearings for end-side storage of a with threads

versehenen Kugelrollspindel Die Erfindung betrifft ein Wälzlager zur endseitigen Lagerung einer mit Gewindegängen versehenen Kugelrollspindel, das aus einem Innenlaufring, einem Außenlaufring sowie zwischen diesen abrollenden Wälzkörpern besteht.provided ball screw The invention relates to a roller bearing for end storage of a threaded ball screw that consists of an inner race, an outer race and between these rolling elements rolling consists.

Kugelrollspindeln dienen zur Umwandlung von Drehbewegungen in Längsbewegungen oder umgekehrt, wobei zur Kraftübertragung Kugeln vorgesehen sind, die einerseits in den Gewindegängen der Kugelrollspindel und andererseits in Gewindegängen einer Mutter abrollen, die die Kugelrollspindel konzentrisch umgibt und eine geschlossene Umlaufbahn für den Kreislauf der Kugeln aufweist.Ball screws are used to convert rotary movements into longitudinal movements or vice versa, with balls being provided for power transmission, on the one hand in the threads of the ball screw and on the other hand in threads of a Unroll the nut that concentrically surrounds the ball screw and a closed one Has orbit for the circulation of the balls.

Bei den bisher bekannten Ausführungen sind die Enden der Kugelrollspindel im Durchmesser verringert und zur Schaffung einer Sitzfläche für die zur Lagerung dienenden Wälzlager glattzylindrisch ausgebildet. Die hierzu erforderliche spanabhebende Bearbeitung erfordert jedoch einen zusätzlichen Aufwand, der nur dann gerechtfertigt ist, wenn die Kugelrollspindel selbst mit höchster Präzision hergestellt ist.In the previously known designs, the ends of the ball screw spindle reduced in diameter and used to create a seating area for storage serving roller bearings smooth cylindrical. The machining process required for this Editing, however, requires additional effort that is only justified then is when the ball screw itself is manufactured with the highest precision.

Bei diesen Präzisions-Kugelrollspindeln, deren Gewindegänge bei der Endbearbeitung maßgenau geschliffen werden, werden auch besondere Anforderungen an die Lagersitzflächen gestellt.With these precision ball screws, the threads of which are at the Finishing to be ground to size, there are also special requirements placed on the bearing seating surfaces.

Für untergeordnete Anwendungsfälle kommen jedoch Kugelrollspindeln zum Einsatz, deren Gewindegänge nur durch einen Rollvorgang erzeugt sind. Diese in der Herstellung einfachen und billigen Kugelrollspindeln werden durch die zusätzliche Bearbeitung der Lagersitzflächen wesentlich verteuert.However, ball screws are used for subordinate applications to the Use, the threads of which are only produced by a rolling process. This in the Manufacture simple and cheap ball screws are made by the additional Machining the bearing seat surfaces is much more expensive.

Der Erfindung liegt deshalb die Aufgabe zugrunde, für diese Kugelrollspindeln eine Lagerungsmöglichkeit aufzuzeigen, die wesentlich einfacher und dadurch kostengünstiger ist.The invention is therefore based on the object for these ball screws to show a storage option that is much simpler and therefore more cost-effective is.

Erfindungsgemäß wird dies dadurch erreicht, daß der Innenlaufring in seiner Bohrung ein Innengewinde zum Aufschrauben auf die Kugelrollspindel besitzt. Dadurch ergibt sich der Vorteil, daß die Kugelrollspindel nur auf die gewünschte Länge abgeschnitten werden muß und ohne zusätzliche spanabhebende Bearbeitung an ihren Enden eine ausreichende Sitzfläche für die Lager aufweist. Dabei ist es völlig ausreichend, wenn das Gewinde im Innenlaufring ebenfalls in einfacher Weise durch Rollen hergestellt ist. Durch die vorgeschlagene Ausbildung wird nicht nur die Fertigung wesentlich verbilligt, sondern auch die Montage erleichtert.According to the invention this is achieved in that the inner race has an internal thread in its bore for screwing onto the ball screw spindle. This has the advantage that the ball screw only to the desired Length must be cut off and without additional machining their ends have a sufficient seating area for the bearings. It is totally sufficient if the thread in the inner race also passes through easily Rolling is made. The proposed training not only increases manufacturing significantly cheaper, but also facilitates assembly.

Nach einer bevorzugten Ausführungsform der Erfindung ist vorgesehen, daß das Innengewinde des Laufringes eine Steigung aufweist, die geringfügig von der Steigung der Gewindegänge der Kugelrollspindel abweicht. Dadurch ergibt sich beim auf schrauben des Innenlaufringes auf die Kugelrollspindel eine Klemmwirkung, die für viele Anwendungsfälle ausreichend ist, so daß sich eine zusätzliche Verdrehsicherung erübrigt.According to a preferred embodiment of the invention it is provided that the internal thread of the race has a pitch that is slightly from the pitch of the threads of the ball screw deviates. This results in a clamping effect when screwing the inner race onto the ball screw, which is sufficient for many applications, so that there is an additional anti-twist device unnecessary.

Es ist jedoch auch möglich, daß der Innenlaufring durch gesonderte Bauteile, z. B. eine Stellschraube, einen Sicherungsstift od. dgl. gegen Verdrehen gesichert ist. Durch diese Maßnahme wird in einfacher Weise ein Lockern und damit ein Verdrehen des Innenringes zuverlässig verhindert.However, it is also possible that the inner race by separate Components, e.g. B. od a set screw, a locking pin. Like. Against rotation is secured. This measure is a simple way of loosening and thus a twisting of the inner ring reliably prevented.

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt, das im folgenden näher beschrieben wird.In the drawing, an embodiment of the invention is shown, which is described in more detail below.

Das dargestellte Teilstück der Kugelrollspindel 1 ist über seine ganze Länge mit Gewindegängen 2 versehen und am Ende drehbar in einem Kugellager 3 aufgenommen, das aus dem Innenlaufring 4, den Außenringhälften 5 und 6 sowie den Kugeln 7 besteht.The portion of the ball screw 1 shown is over its whole Length provided with threads 2 and rotatably received at the end in a ball bearing 3, which consists of the inner race 4, the outer ring halves 5 and 6 and the balls 7.

Der Innenlaufring 4 weist in seiner Bohrung ein Innengewinde 8 auf, mit dem er auf die Kugelrollspindel 1 aufgeschraubt ist. Zur Verdrehsicherung ist der Innenlaufring 4 an einem Ende mit einem axial überstehenden Bund 9 versehen, der eine Bohrung 10 aufweist, die mit einer Bohrung 11 in der Kugelrollspindel 1 fluchtet. In die Bohrungen 10 und 11 ist ein Sicherungsstift 12 eingesetzt.The inner race 4 has an internal thread 8 in its bore, with which it is screwed onto the ball screw 1. Is to prevent rotation the inner race 4 is provided at one end with an axially protruding collar 9, which has a bore 10 which is connected to a bore 11 in the ball screw 1 flees. A locking pin 12 is inserted into the bores 10 and 11.

Claims (3)

Ansprüche 1. Wälzlager zur endseitigen Lagerung einer mit Gewindegängen versehenen Kugelrollspindel, das aus einem Innenlaufring, einem Außenlaufring sowie zwischen diesen abrollenden Wälzkörpern besteht, dadurch gekennzeichnet, daß der Innenlaufring (4) in seiner Bohrung ein Innengewinde (8) zum Aufschrauben auf die Kugelrollspindel (1) besitzt. Claims 1. Rolling bearings for the end-side storage of one with threads provided ball screw, which consists of an inner race, an outer race and exists between these rolling elements, characterized in that the Inner race (4) has an internal thread (8) in its bore for screwing onto the Has ball screw (1). 2. Wälzlager nach Anspruch 1, dadurch gekennzeichnet, daß das Innengewinde (8) des Innenlaufringes (4) eine Steigung aufweist, die geringfügig von der Steigung der Gewindegänge (2) der Kugelrollspindel (1) abweicht.2. Rolling bearing according to claim 1, characterized in that the internal thread (8) of the inner race (4) has a slope that is slightly different from the slope the thread turns (2) of the ball screw spindle (1) deviates. 3. Wälzlager nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Innenlaufring (4) durch gesonderte Bauteile, z. B.3. Rolling bearing according to claim 1 or 2, characterized in that the Inner race (4) by separate components, e.g. B. eine Stellschraube, einen Sicherungsstift (12) od. dgl. an adjusting screw, a locking pin (12) or the like. gegen Verdrehen gesichert ist. is secured against twisting.
DE19782852179 1978-12-02 1978-12-02 Worm end bearing assembly - has threaded inner ring rotating with worm and two outer rings engaging balls Withdrawn DE2852179A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19782852179 DE2852179A1 (en) 1978-12-02 1978-12-02 Worm end bearing assembly - has threaded inner ring rotating with worm and two outer rings engaging balls

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782852179 DE2852179A1 (en) 1978-12-02 1978-12-02 Worm end bearing assembly - has threaded inner ring rotating with worm and two outer rings engaging balls

Publications (1)

Publication Number Publication Date
DE2852179A1 true DE2852179A1 (en) 1980-06-12

Family

ID=6056136

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19782852179 Withdrawn DE2852179A1 (en) 1978-12-02 1978-12-02 Worm end bearing assembly - has threaded inner ring rotating with worm and two outer rings engaging balls

Country Status (1)

Country Link
DE (1) DE2852179A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0362132A1 (en) * 1988-09-12 1990-04-04 SKB Fabrique de roulements SA Locking element
EP0552488A1 (en) * 1991-12-23 1993-07-28 Thomson Saginaw Ball Screw Company, Inc. Methods of making recirculating ball nut and splined shaft and screw assemblies
WO2004111478A1 (en) * 2003-06-06 2004-12-23 Giancarlo Brun Bearing
DE102010053119A1 (en) * 2010-12-01 2012-06-06 Robert Bosch Gmbh Method for producing a threaded spindle with a large bearing seat
EP2786845A1 (en) * 2013-04-03 2014-10-08 FELCO Motion SA Portable electric tool

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0362132A1 (en) * 1988-09-12 1990-04-04 SKB Fabrique de roulements SA Locking element
EP0552488A1 (en) * 1991-12-23 1993-07-28 Thomson Saginaw Ball Screw Company, Inc. Methods of making recirculating ball nut and splined shaft and screw assemblies
US5287762A (en) * 1991-12-23 1994-02-22 Thomson Saginaw Ball Screw Company, Inc. Recirculating ball nut and shaft assembly
WO2004111478A1 (en) * 2003-06-06 2004-12-23 Giancarlo Brun Bearing
DE102010053119A1 (en) * 2010-12-01 2012-06-06 Robert Bosch Gmbh Method for producing a threaded spindle with a large bearing seat
US9815153B2 (en) 2010-12-01 2017-11-14 Robert Bosch Gmbh Process for producing a threaded spindle having a large bearing seat
EP2786845A1 (en) * 2013-04-03 2014-10-08 FELCO Motion SA Portable electric tool
WO2014161942A1 (en) 2013-04-03 2014-10-09 Felco Motion Sa Power hand tool

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Legal Events

Date Code Title Description
8127 New person/name/address of the applicant

Owner name: INA WAELZLAGER SCHAEFFLER KG, 8522 HERZOGENAURACH,

8110 Request for examination paragraph 44
8130 Withdrawal