EP2798239A1 - Entraînement de broche, procédé de fabrication d'une telle broche - Google Patents

Entraînement de broche, procédé de fabrication d'une telle broche

Info

Publication number
EP2798239A1
EP2798239A1 EP12816260.9A EP12816260A EP2798239A1 EP 2798239 A1 EP2798239 A1 EP 2798239A1 EP 12816260 A EP12816260 A EP 12816260A EP 2798239 A1 EP2798239 A1 EP 2798239A1
Authority
EP
European Patent Office
Prior art keywords
spindle
guide
spindle drive
drive
housing
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Withdrawn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
EP12816260.9A
Other languages
German (de)
English (en)
Inventor
Christian Meyer
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2798239A1 publication Critical patent/EP2798239A1/fr
Withdrawn legal-status Critical Current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
    • F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
    • 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
    • F16H2025/204—Axial sliding means, i.e. for rotary support and axial guiding of nut or screw shaft

Definitions

  • the invention relates to a spindle drive with a rotatably and axially displaceably arranged, a threaded spindle and having a rotatably mounted and axially fixed, with the thread
  • the invention relates to a method for producing a spindle for a spindle drive, in particular as described above.
  • the invention relates to a method for producing a spindle drive, in particular as described above.
  • the spindle nut is axially locked or fixed.
  • the spindle is assigned a rotation, so that the spindle is arranged rotatably.
  • this rotation lock is inserted through an inserted into the spindle Additional part formed, which cooperates with a spindle supporting the fan according to rotation inhibiting, or a spindle end is provided by deformation with a non-circular cross-sectional profile, which is axially guided in a correspondingly contoured stationary receptacle which coaxially surrounds the spindle end and thereby prevented from rotating.
  • the spindle drive according to the invention with the features of claim 1 allows a compact design, without requiring a higher
  • the invention provides that one end portion of the spindle is bent and engages with its free end in a stationary longitudinal guide.
  • one end portion of the spindle is bent and engages with its free end in a stationary longitudinal guide.
  • the longitudinal guide according to the invention is arranged laterally to the spindle, so that with the longitudinal guide
  • cooperating end portion of the spindle can be made substantially shorter.
  • the end portion is bent by 90 ° with respect to the longitudinal axis or axis of rotation of the spindle in order to obtain a space-saving arrangement as possible.
  • other angles in particular between 30 ° and 90 ° are conceivable.
  • the end portion is at the height of the thread of the spindle, in particular centrally with respect to its longitudinal extent, which can be achieved for example by an angle> 90 °.
  • the end portion is provided at its free end with a guide contour, the laterally at least substantially free of play with the longitudinal guide
  • the guide contour is characterized by the fact that it ensures the translational movement of the spindle safely and this
  • the longitudinal guide is designed as a guide groove in which the guide contour is displaceably mounted.
  • the guide contour as a flattened end, in particular as
  • the guide web is expediently oriented parallel to the longitudinal axis or rotational axis of the spindle, so that an advantageous guidance in the longitudinal guide is ensured and both lateral contact surfaces are equally stressed.
  • the housing is formed in particular on / in a housing of the spindle drive.
  • the housing may be provided separately as a housing part or formed integrally with a housing housing the spindle.
  • the housing forms bearings for the rotatable mounting of the spindle, wherein
  • At least one roller bearing is provided for frictionless rotary mounting of the spindle.
  • the inventive method for producing a spindle for a spindle drive is characterized in that an end portion of the spindle is bent and provided at its free end with a guide contour.
  • the bending and the formation of the guide contour by forming processes, in particular by cold forming processes.
  • the thus deformed end is introduced into a longitudinal guide, which is formed in a housing or housing part of the spindle drive and extends parallel to the axis of rotation of the spindle. It is particularly preferably provided that the guide contour is formed as a guide web, which is parallel to the longitudinal axis or
  • Rotation axis of the threaded spindle extends.
  • this guide web is produced by the cold forming process.
  • the inventive method for producing a spindle drive in which a threaded spindle having a rotationally fixed and axially displaceable and a cooperating with the threaded spindle nut or screw rotatably and axially fixed in a housing, is characterized in that the spindle as described above is manufactured.
  • an anti-rotation device is realized in a simple manner, which ensures a safe rotation of the spindle in a compact design over a wide displacement range.
  • Figure 1 shows a spindle of a spindle drive in a side view
  • Figure 2 shows the spindle drive in a simplified cross-sectional view.
  • FIG. 1 shows a spindle 1 of a spindle drive 2 (not shown here).
  • the spindle 1 has a central threaded section 3, on which the spindle 1 is provided with an external thread 4.
  • a functional section 5 adjoins the threaded section 3 and at the other end
  • the functional portion 5, which also forms an end portion of the spindle 1, is present as a connector for a means of
  • Active compound can be brought.
  • the other end portion 6 of the spindle 1 forms a guide portion 8.
  • the spindle 1 is bent in the end portion 6 at an angle of about 90 °, so that the end portion 6 by the bend 12 produced substantially perpendicular extends to the longitudinal extent or to the axis of rotation 9 of the spindle 1 and thereby projects laterally from this.
  • the free end 10 is flattened in such a way, that it comprises or forms a guide web 1 1, which extends parallel to the axis of rotation 9.
  • the bend 12 and the guide web 1 1 are produced by cold forming processes. The preparation is thus based on a cylindrical spindle 1, which extends along an axis. At one end of the functional portion 5 is provided and the other end portion 6 is brought by bending and, for example, pressing the free end in the desired shape.
  • FIG. 2 shows the spindle drive 2 in a simplified cross-sectional view along the line A-A from FIG. 1.
  • the spindle 1 is mounted in a housing 13 of the spindle drive 2 such that the guide web 1 1 engages in a guide groove 14 of the housing 13.
  • the guide bar 1 1 serves insofar as
  • Guide contour 15 which cooperates with the guide groove 1 1 as a longitudinal guide 16 such that on the one hand, a rotation between the housing 13 and the spindle 1 is made, and on the other hand, the spindle 1 is slidably held or guided in its longitudinal extent.
  • the guide groove 14 also extends parallel to the axis of rotation 9 of the spindle 1.
  • the alignment of the spindle 1 in the housing with respect to the guide groove 14 is accomplished by the mounting of the spindle 1 in the housing 13.
  • one or two sliding or rolling bearings are provided for this purpose, which hold the spindle 1 and align it in the housing 1.
  • the spindle drive 2 furthermore has a spindle nut 17 which has an internal thread 18 cooperating with the external thread 4. By a rotational movement of the spindle nut 17 is through each other
  • the guide contour 15 and the guide web 1 1 of the spindle 1 is formed such that it laterally in
  • Substantially backlash rests in the guide groove 14, so that it comes with a change of direction of the direction of rotation of the spindle nut 17 to no loud investment change, which could also lead to a higher wear on the spindle 1. Due to the advantageous flattening of the end 10, which forms the guide web 1 1, the surface pressure is minimized to a desired level at the contact surfaces to the housing 13 in the guide groove 14.
  • Manufacturing processes have the advantage that low production costs arise because only a small amount of material is needed. It also helps that no additional parts to be mounted must be provided. As a result, moreover, less manufacturing steps are required during assembly, whereby the assembly time and the assembly costs are also reduced.

Landscapes

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

Abstract

L'invention concerne un entraînement de broche (2) comprenant une broche (1) solidaire en rotation, pouvant être déplacée axialement et présentant un filetage (4) ainsi qu'un écrou de broche (17), ou vis de broche, rotatif, disposé axialement de manière fixe et coopérant avec le filetage (4). Il est prévu qu'une portion d'extrémité (6) de la broche (1) soit recourbée et s'engage par son extrémité libre (10) dans un guide longitudinal fixe (16). L'invention concerne en outre un procédé de fabrication d'une broche ainsi que d'un entraînement de broche.
EP12816260.9A 2011-12-29 2012-12-17 Entraînement de broche, procédé de fabrication d'une telle broche Withdrawn EP2798239A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011090084.5A DE102011090084B4 (de) 2011-12-29 2011-12-29 Spindelantrieb, Verfahren zur Herstellung
PCT/EP2012/075708 WO2013098103A1 (fr) 2011-12-29 2012-12-17 Entraînement de broche, procédé de fabrication d'une telle broche

Publications (1)

Publication Number Publication Date
EP2798239A1 true EP2798239A1 (fr) 2014-11-05

Family

ID=47563348

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12816260.9A Withdrawn EP2798239A1 (fr) 2011-12-29 2012-12-17 Entraînement de broche, procédé de fabrication d'une telle broche

Country Status (4)

Country Link
EP (1) EP2798239A1 (fr)
CN (1) CN104024696A (fr)
DE (1) DE102011090084B4 (fr)
WO (1) WO2013098103A1 (fr)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB372595A (en) * 1931-06-17 1932-05-12 Malcolm Scott Campbell Wilson Improvements in mechanism for converting rotary into reciprocating motion and vice versa
JPS5919762A (ja) * 1982-07-21 1984-02-01 Komatsu Ltd モ−タ式リニアアクチユエ−タ
DE3801904A1 (de) 1988-01-23 1989-08-03 Gestra Ag Schraubgetriebe
KR960008139A (ko) * 1994-08-06 1996-03-22 직동 변환 모터의 스크류 샤프트의 회전 방지 및 분리 방지 기구
CN1776187A (zh) * 2005-11-28 2006-05-24 宿官礼 螺旋驱动抽油机
TWI351159B (en) * 2007-12-26 2011-10-21 Delta Electronics Inc Motor and guiding structure thereof
DE102008051544B4 (de) * 2008-10-14 2012-12-27 Continental Automotive Gmbh Spindeltrieb mit Verdrehsicherung
KR101361783B1 (ko) * 2008-10-15 2014-02-11 삼성테크윈 주식회사 렌즈 구동 유닛 및 이를 구비하는 카메라 모듈
DE102010062532A1 (de) * 2009-12-08 2011-06-09 Continental Teves Ag & Co. Ohg Spindelgetriebe

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2013098103A1 *

Also Published As

Publication number Publication date
DE102011090084A1 (de) 2013-07-04
WO2013098103A1 (fr) 2013-07-04
DE102011090084B4 (de) 2019-03-21
CN104024696A (zh) 2014-09-03

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