DE2109640A1 - Assembly unit for machine tools consisting of a spindle and a threaded nut - Google Patents

Assembly unit for machine tools consisting of a spindle and a threaded nut

Info

Publication number
DE2109640A1
DE2109640A1 DE19712109640 DE2109640A DE2109640A1 DE 2109640 A1 DE2109640 A1 DE 2109640A1 DE 19712109640 DE19712109640 DE 19712109640 DE 2109640 A DE2109640 A DE 2109640A DE 2109640 A1 DE2109640 A1 DE 2109640A1
Authority
DE
Germany
Prior art keywords
spindle
threaded nut
machine tools
assembly unit
tools consisting
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
DE19712109640
Other languages
German (de)
Inventor
Alfred 8300 Landshut Loch
Original Assignee
Alfred Loch Kg Maschinenfabrik, 8300 Landshut
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 Alfred Loch Kg Maschinenfabrik, 8300 Landshut filed Critical Alfred Loch Kg Maschinenfabrik, 8300 Landshut
Priority to DE19712109640 priority Critical patent/DE2109640A1/en
Publication of DE2109640A1 publication Critical patent/DE2109640A1/en
Pending 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
    • F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/22—Feeding members carrying tools or work
    • B23Q5/34—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
    • B23Q5/38—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously
    • B23Q5/40—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously by feed shaft, e.g. lead screw

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Turning (AREA)

Description

Aus einer Spindel und einer Gewindemutter bestehende Baueinheit flir Werkzeugmaschinen Die Erfindung betrifft eine Baueinheit für Werkzeugmaschinen, bestehend aus einer Spindel und einer Gewindemutter, beide insbesondere mit einem Trapezgewinde versehen. Assembly unit consisting of a spindle and a threaded nut Machine tools The invention relates to a structural unit for machine tools, consisting of a spindle and a threaded nut, both in particular with one Trapezoidal thread provided.

Die im Regelfall mit einem Trapezgewinde versehenen Antriebsspindeln von Werkzeugmaschinen stützen sich mit den Flanken ihrer einzelnen Gewindegänge an den Flanken der komplementãr ausgebildeten Gewindegänge der oder jeder ihnen zugeordneten Gewindemutter ab. Insbesondere dann, wenn die Gewindemutter eine grdssere Axiallänge besitzt, kommt es nun im Rundlauf der Spindel insbesondere dann, wenn für diese eine horizontale Anordnung getroffen ist, zu einer dauernden Verschiebung der idealen Eingriffstellung, derart, dass die Flanken derGewindegänge der Spindel und diejenigen der Gewindemutter, Fieber den Querschnitt entlang einer gemeinsamen Durchmesserlinie gesehen, im Bereich des einen Endes einer solchen Durchmesserlinie weniger tief im Eingriff stehen als im Bereich des anderen Endes derselben. Solche Verschiebungen in der Eingriffstellung der Gewindegänge von Spindel und Gewlndemutter resultieren in un.rwünschen Vibrationen der Spindel.The drive spindles, which are usually provided with a trapezoidal thread of machine tools are supported by the flanks of their individual thread turns on the flanks of the complementary threads of the or each of them assigned threaded nut. Especially if the nut is larger Axial length, it now comes in the concentricity of the spindle especially when for this a horizontal arrangement is made, to a permanent shift the ideal engagement position, such that the flanks of the threads of the spindle and those of the threaded nut, fever the cross section along a common Seen the diameter line, in the area of one end of such a diameter line are less deeply engaged than in the area of the other end of the same. Such Shifts in the engagement position of the threads of the spindle and threaded nut result in undesirable wishes Vibration of the spindle.

Es wurde nun gefunden, dass dann, wenn in die Gewindemutter erfindungsgemäss wenigstens ein die Spindel ihr gegenüber radial auf lagernder Lagerkörper, wie insbesondere ein Nadellager, eingebaut wird, solche Schwingungen der ruüdlaufenden Spindel vermieden werden., Dabei ist es insbesondere für axial längere Gewindemuttern von Vorteil, in beide Enden derselben je einen solchen Lagerkörper, also insbesondere ein Nadellager, einzubauen, dessen Nadeln also dann auf dem Gewinde-Aussendurchmesser der Spindel laufen und also bewirken, dass die Spindel bezüglich ihrer Gewindemutter unter Aufhebung der flankenseitigen Abstützung genauestens zentriert wird.It has now been found that when in the threaded nut according to the invention at least one of the spindle opposite to it radially superimposed bearing body, such as in particular a needle bearing is installed to avoid such vibrations of the idle spindle , It is particularly advantageous for axially longer threaded nuts, in both ends of the same one such bearing body, in particular a needle bearing, to be installed, its needles then on the outer thread diameter of the spindle run and thus cause the spindle with respect to its threaded nut under cancellation the flank-side support is precisely centered.

In der beigefügten Zeichnung, die eine bevorzugte Ausführungsform der Erfindung zeigt, bezeichnet 1 den Längenabschnitt einer Spindel, die mit einem Trapezgewinde 2 versehen ist.In the accompanying drawing showing a preferred embodiment the invention shows, 1 denotes the length of a spindle with a Trapezoidal thread 2 is provided.

Eine mit einem komplementären Trapezgewinde versehene Gewindemutter 3 besitzt an ihren beiden Enden je ein in sie eingebautes Nadellager 4, dessen Nadeln 5 auf dem Aussendurchmesser des Trapezgewindes 2 der Spindel 1 laufen, so dass die Spindel 1 durch diese beiden Nadellager 4 eine genaue Zentrierung BezUg lich der Gewindemutter 3 erfährt. Anstelle von Nadellagern können auch andere Gleitlager Verwendung fInden.A threaded nut provided with a complementary trapezoidal thread 3 has a needle bearing 4 built into it at both ends, its needles 5 run on the outer diameter of the trapezoidal thread 2 of the spindle 1, so that the Spindle 1 ensures precise centering with respect to these two needle bearings 4 Thread nut 3 learns. Instead of needle bearings, other plain bearings can also be used Find use.

Claims (2)

ANSPRÜCHE EXPECTATIONS Baueinheit für Werkzeugmaschinen, bestehend aus einer Spindel und einer Gewindemutter, beide insbesondere mit einem Trapezgewinde versehen, d a d u r c h g e -k e n n z e i c h n e t , dass in die Gewindemutter (3) wenigstens ein die Spindel (1) ihr gegenüber radial auflagern ~ der Lagerkörper, wie irrsbesondere ein Nadellager (4,5), eingebaut ist. Unit for machine tools, consisting of a spindle and a threaded nut, both in particular provided with a trapezoidal thread, d a d u r c h g e -k e n n n z e i c h n e t that in the threaded nut (3) at least a the spindle (1) support radially opposite it ~ the bearing body, as in particular a needle bearing (4,5) is installed. 2. Baueinheit nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , dass in die beiden Enden der Gewindemutter (3) je ein Nadellager (4,5 ) eingebaut ist.2. Assembly according to claim 1, d a d u r c h g e k e n n z e i c h n e t that in each of the two ends of the threaded nut (3) a needle bearing (4,5) is built in. LeerseiteBlank page
DE19712109640 1971-03-01 1971-03-01 Assembly unit for machine tools consisting of a spindle and a threaded nut Pending DE2109640A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19712109640 DE2109640A1 (en) 1971-03-01 1971-03-01 Assembly unit for machine tools consisting of a spindle and a threaded nut

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712109640 DE2109640A1 (en) 1971-03-01 1971-03-01 Assembly unit for machine tools consisting of a spindle and a threaded nut

Publications (1)

Publication Number Publication Date
DE2109640A1 true DE2109640A1 (en) 1972-09-07

Family

ID=5800164

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19712109640 Pending DE2109640A1 (en) 1971-03-01 1971-03-01 Assembly unit for machine tools consisting of a spindle and a threaded nut

Country Status (1)

Country Link
DE (1) DE2109640A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0003802A1 (en) * 1978-02-23 1979-09-05 Fernand Moser Spindle bearing without backlash
EP0157914A1 (en) * 1984-02-29 1985-10-16 INA Wälzlager Schaeffler KG Roller bearing for a screw spindle
WO2007024006A3 (en) * 2005-08-25 2007-07-05 Toyota Motor Co Ltd Rotation/linear motion converting mechanism

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0003802A1 (en) * 1978-02-23 1979-09-05 Fernand Moser Spindle bearing without backlash
EP0157914A1 (en) * 1984-02-29 1985-10-16 INA Wälzlager Schaeffler KG Roller bearing for a screw spindle
WO2007024006A3 (en) * 2005-08-25 2007-07-05 Toyota Motor Co Ltd Rotation/linear motion converting mechanism
CN101248299B (en) * 2005-08-25 2011-05-11 丰田自动车株式会社 Rotation/linear motion converting mechanism
US8020463B2 (en) 2005-08-25 2011-09-20 Toyota Jidosha Kabushiki Kaisha Rotation/linear motion converting mechanism

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