DE19504808A1 - Ball and screw drive with plain bearing guide - Google Patents

Ball and screw drive with plain bearing guide

Info

Publication number
DE19504808A1
DE19504808A1 DE1995104808 DE19504808A DE19504808A1 DE 19504808 A1 DE19504808 A1 DE 19504808A1 DE 1995104808 DE1995104808 DE 1995104808 DE 19504808 A DE19504808 A DE 19504808A DE 19504808 A1 DE19504808 A1 DE 19504808A1
Authority
DE
Germany
Prior art keywords
ball
nut
screw drive
plain bearing
bearing guide
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Withdrawn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
DE1995104808
Other languages
German (de)
Inventor
Joerg Steidten
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE1995104808 priority Critical patent/DE19504808A1/en
Publication of DE19504808A1 publication Critical patent/DE19504808A1/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Withdrawn legal-status Critical Current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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)

Abstract

The drive has two plain bearing bushes in the front and rear regions of the nut (replacing the conventional ball races), leading to the external dia. of the spindle, thus keeping any radial misalignment of the spindle nut within the tolerance range of the plain bearings. One or more ball races can be made in the middle of the nut, with reduced pre-stressing, since they now have no influence on the axial play of the nut.

Description

Die im Handel erhältlichen Präzisions-Kugelgewinde­ triebe (z. B. Steinmeyer), sind in erster Linie dazu geeignet, Steigungen in axialer Richtung präzise aus zuführen.The commercially available precision ball screw drives (e.g. Steinmeyer) are primarily for this suitable, precise gradients in the axial direction lead out.

Je nach Bedarf können diese Spindeln mit ein oder mehreren Kugelumläufen gefertigt werden.Depending on your needs, these spindles can be used with or several ball revolutions can be manufactured.

Bei Anforderungen, die außer der Steigungsgenauigkeit auch noch eine geringe seitlich Verkippung in radialer Richtung verlangen, werden die Spindelmuttern mit zwei Kugelumläufen gefertigt.For requirements other than pitch accuracy also a small lateral tilt in the radial Requiring direction, the spindle nuts are with two Ball gears manufactured.

Je kleiner die Verkippung sein darf, um so größer muß die Vorspannung in den einzelnen Kugelumläufen ausgelegt sein.The smaller the tilt, the greater it must be the preload in the individual ball revolutions his.

Dies hat zur Folge, daß ein wesentlich höheres Dreh­ moment benötigt wird und die Spindel rauh und ruppig läuft.This has the consequence that a much higher rotation moment is required and the spindle is rough and rough running.

Um diese unerwünschten Auswirkungen zu vermeiden, gibt es folgende Möglichkeit:
Im vorderen und hinteren Bereich der Mutter werden an Stelle der sonst vorgesehenen Kugelumläufe zwei Gleitlagerbuchsen eingesetzt, die am Außendurchmesser der Spindel geführt werden und somit eine radiale Ver­ kippung der Spindelmutter nur im Toleranzbereich der Gleitlager erlaubt.To avoid these undesirable effects, you have the following options:
In the front and rear area of the nut, two plain bearing bushes are used in place of the ball bearings otherwise provided.

In der Mitte der Mutter können nun ein oder mehrere Kugelumläufe, auch mit geringer Vorspannung eingebaut werden, weil sie nun keinen Einfluß mehr auf das axiale Spiel der Mutter haben.In the middle of the mother can now be one or more Ball circulations, also installed with low preload because they no longer have any influence on the axial Mother's play.

Diese Maßnahme ergibt ein spielfreies System in radialer und axialer Richtung mit niedrigem Drehmoment und ruhigen Lauf.This measure results in a backlash-free radial system and axial direction with low torque and run smoothly.

Eine Ausführung wird anhand der Zeichnung Fig. 1 erläutert.An embodiment is explained with reference to the drawing Fig. 1.

Claims (2)

Kugelgewindetrieb mit Gleitlagerführung für mechanische Systeme.Ball screw drive with slide bearing guide for mechanical Systems. Ein Kugelgewindetrieb, dadurch gekennzeichnet, daß im vorderen und hinterem Bereich der Spindelmutter ein Gleitlager eingebaut ist, das am Außendurchmesser der Spindel führt.A ball screw drive, characterized in that a slide bearing is installed in the front and rear area of the spindle nut, which leads to the outside diameter of the spindle.
DE1995104808 1995-02-14 1995-02-14 Ball and screw drive with plain bearing guide Withdrawn DE19504808A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1995104808 DE19504808A1 (en) 1995-02-14 1995-02-14 Ball and screw drive with plain bearing guide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1995104808 DE19504808A1 (en) 1995-02-14 1995-02-14 Ball and screw drive with plain bearing guide

Publications (1)

Publication Number Publication Date
DE19504808A1 true DE19504808A1 (en) 1996-08-22

Family

ID=7753874

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1995104808 Withdrawn DE19504808A1 (en) 1995-02-14 1995-02-14 Ball and screw drive with plain bearing guide

Country Status (1)

Country Link
DE (1) DE19504808A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007059276A1 (en) * 2007-12-08 2009-06-10 Deibel, Jakob Ball screw for use in, e.g. wood working machine, lathe, press, drilling ring or clamping bolt, has balls rolled in at end of ball screw, and stop sheet is screwed in ball screw such that balls do not fall out
DE102022121514A1 (en) 2022-08-25 2024-03-07 Schaeffler Technologies AG & Co. KG Rolling screw drive

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007059276A1 (en) * 2007-12-08 2009-06-10 Deibel, Jakob Ball screw for use in, e.g. wood working machine, lathe, press, drilling ring or clamping bolt, has balls rolled in at end of ball screw, and stop sheet is screwed in ball screw such that balls do not fall out
DE102022121514A1 (en) 2022-08-25 2024-03-07 Schaeffler Technologies AG & Co. KG Rolling screw drive

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Legal Events

Date Code Title Description
8130 Withdrawal