EP1334293A1 - Vis d'entrainement a billes - Google Patents

Vis d'entrainement a billes

Info

Publication number
EP1334293A1
EP1334293A1 EP01996702A EP01996702A EP1334293A1 EP 1334293 A1 EP1334293 A1 EP 1334293A1 EP 01996702 A EP01996702 A EP 01996702A EP 01996702 A EP01996702 A EP 01996702A EP 1334293 A1 EP1334293 A1 EP 1334293A1
Authority
EP
European Patent Office
Prior art keywords
nut
ball screw
screw drive
drive according
balls
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Withdrawn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
EP01996702A
Other languages
German (de)
English (en)
Inventor
Jürgen OSTERLÄNGER
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.)
IHO Holding GmbH and Co KG
Original Assignee
INA Schaeffler KG
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 INA Schaeffler KG filed Critical INA Schaeffler KG
Publication of EP1334293A1 publication Critical patent/EP1334293A1/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Withdrawn legal-status Critical Current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
    • F16H25/22—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
    • F16H25/2214—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with balls with elements for guiding the circulating balls

Definitions

  • the invention relates to a ball screw drive with a spindle and a nut surrounding it, provided with a fastening flange, and with balls arranged therebetween, which are arranged along a helical path, being supported in a rollable manner on raceways which are supported by one on the outer surface of the spindle and a corresponding thread groove on the inner surface of the nut are formed, and with through-openings of the nut which are connected to one another by at least one tubular arc-shaped deflection piece for the return of the balls from one end of the path to the nut Are connected at the beginning.
  • Ball screws with mounting flanges and external pipe deflection are generally known. They are used in mechanical engineering, for example in the automotive sector.
  • the nut body is usually produced by machining, but this is time-consuming and expensive.
  • the deflection piece, which connects the through openings with each other, must be secured against falling out. This can be done with additional plates screwed onto the nut. This procedure is also expensive and unsuitable for large series production.
  • the invention is based on the object of specifying a ball screw which can be economically produced in large quantities and which enables the balls to run smoothly with high efficiency.
  • the nut and the mounting flange are made in two parts and the deflection piece is arranged in a recess of the mounting flange and is held radially in this.
  • the deflecting piece is, or in the case of multi-start threads, the deflecting pieces are thus inserted into the associated through-openings and are radially secured by the subsequently mounted fastening flange.
  • the fastening flange is at least partially in the same axial position as this.
  • a fastening method can be used on the nut and the fastening flange attached thereto, as a result of which the fastening flange is held on the nut axially and in the circumferential direction.
  • a welding, gluing, soldering, caulking or a combination of several of these methods can be used as the fastening method. It is also possible to carry out the fit between the nut and the mounting flange as a press fit.
  • the fastening flange can be positively attached to the nut in an axial direction by means of a stop surface which is integrally formed on the nut.
  • the nut can also have a profile on its outer surface, in which caulked material of the fastening flange is arranged.
  • the non-hardened flange is then caulked on the outside diameter of the hardened nut, which is provided with such a specially shaped profile, in order thereby to obtain a positive connection, the high one Can transmit forces.
  • the profiling can e.g. B. Knurling.
  • the deflection piece can be arranged in the recess of the mounting flange with a radial play. In this way, the deflection piece can "breathe” a little, which favors a smooth running of the balls.
  • the nut with the thread groove can be a component produced without cutting by drawing, calibrating and / or rolling. It can consist of hardened steel. If the nut is machined, there is only a small chip volume in the manufacture of the pipe.
  • the mounting flange can be stamped from a sheet metal, preferably from sheet steel. In order to obtain exactly flat surfaces, it can be ground on both sides.
  • the deflection piece can be made in one piece or in several parts as a bent tube made of steel or plastic.
  • FIG. 1 shows a nut, a deflection piece and a mounting flange for a ball screw drive according to the invention in a side view
  • FIG. 2 shows a ball screw drive with the components according to FIG. 1 in an end view with a partial cross section
  • Figure 3 is a side view with a partial longitudinal section of the nut and the fastening flange attached thereto;
  • FIG. 4 shows the connection area of the nut and the fastening flange showing enlarged detail from Figure 3;
  • Figure 6 shows a two-part U-tube-shaped deflector in a view of
  • Figure 7 shows a mounting flange in an end view
  • Figure 8 shows the mounting flange of Figure 7 in a side view
  • Figure 9 shows a known ball screw in a perspective
  • FIG. 10 shows the ball screw drive according to FIG. 9, partly in a cross section showing the entry side of a deflection piece
  • FIG. 11 shows the ball screw drive according to FIG. 9, partly in a cross section showing the outlet side of the deflection piece.
  • a ball screw according to the known prior art shown in FIGS. 9 to 11 consists of a spindle 1, a nut 2, deflection pieces 3 and balls 4 which are arranged between helical thread grooves of the spindle 1 and corresponding thread grooves of the nut 2 and are continuous are deflected by the deflection pieces 3.
  • the balls 4 cause the nut 2 to be displaced along the spindle 1.
  • the balls 4 between the spindle 1 and the nut 2 approach the end of their helical path, they become deflection pieces 3 removed from there, axially passed through the deflection pieces 3 and again at the beginning of the path discontinued.
  • the spindle 1 rotates in the opposite direction, the direction of movement of the balls, and thus that of the nut 2, is reversed.
  • Figure 9 also shows a helical area and a mounting flange 5 of the nut 2, which can be used for the installation of the ball screw.
  • a link of the ball screw for example the nut 2
  • the other link usually the spindle 1
  • the rotation of the motor in a selected direction of rotation causes the nut 2 to move along the spindle 1.
  • the deflection piece 3 is provided with a receiving finger 7, which rather extends into the screw groove which is located between the nut 2 and the spindle 1.
  • the helical path of the balls 4, shown as dashed line 8 is interrupted at a point 9 and suddenly changed to a ball path 10 which runs through the deflection pieces 3.
  • Figure 11 shows the other end of the deflection piece 3 and the way in which the balls 4 are returned to the helical groove between the spindle 1 and the nut 2.
  • the balls 4 are subject to a similarly sudden change in their direction of movement at a point 11.
  • a pick-up finger 12 which is essentially designed in the same way as the pick-up finger 7 of the deflection piece 3 shown in FIG. 10, and which when the balls 4 are reinserted into the helical path serves as a guide.
  • the pick-up finger 12 picks up the balls 4 when the spindle 1 rotates in the opposite direction.
  • a nut 13 and a fastening flange 14 are designed as two individual parts which are fastened to one another.
  • a deflection piece 15, which can be designed as a one-piece U-shaped plastic tube, or a deflection piece 16 of the same shape, which can consist of two assembled sections 17 and 18, runs with its U-web outside the nut 13 and connects two through openings mother. It also serves to return the balls 4 from the end of the helical path to the beginning thereof, like the deflection piece 3 of the known ball screw drive shown in triplicate in FIGS. 9 to 11.
  • the deflection piece 15 or 16 is held in the radial direction by the fastening flange 14, because its flange body has, in addition to a central opening 19 for receiving the nut 13, a recess 20 in which the U-web of the deflection piece 15 or 16 is arranged.
  • the mounting flange 14 is fastened to the nut 13 by caulking after the installation of the deflection piece 15 or 16. According to FIG. 4, it rests with an end face on an annular abutment surface 21 of the nut 13 and surrounds on its other end face a profile 22 incorporated into the outer surface of the nut 13.
  • caulked material 23 of the fastening flange 14 engages in the nut 13, so that the nut 13, the deflection piece 15 and 16 and the mounting flange 14 are fastened to one another and together with a spindle and filled balls 4 form a ball screw drive according to the invention.

Landscapes

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

Abstract

L'invention concerne une vis d'entraînement à billes comprenant une broche et un écrou (13) entourant cette broche et muni d'une bride de fixation (14), ainsi que des billes (4) placées entre la broche et l'écrou selon une trajectoire hélicoïdale et supportées sur des chemins de roulement de manière à pouvoir rouler. Ces chemins de roulement sont formés par une rainure de filetage située sur la face extérieure de la broche et par une rainure de filetage correspondante située sur la face intérieure de l'écrou (13). L'écrou (13) présente des trous traversants reliés par au moins une pièce de renvoi (15) en forme de coude de tuyau, qui s'étend sur la face extérieure de l'écrou (13), permettant le renvoi des billes (4) d'une extrémité du chemin à l'extrémité opposée. Selon l'invention, l'écrou (13) et la bride de fixation (14) sont conçus en deux pièces et la pièce de renvoi (15) est disposée dans un évidement (20) de la bride de fixation (14), dans laquelle elle est maintenue radialement.
EP01996702A 2000-11-14 2001-11-02 Vis d'entrainement a billes Withdrawn EP1334293A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE2000156275 DE10056275B4 (de) 2000-11-14 2000-11-14 Kugelgewindetrieb
DE10056275 2000-11-14
PCT/EP2001/012699 WO2002040895A1 (fr) 2000-11-14 2001-11-02 Vis d'entrainement a billes

Publications (1)

Publication Number Publication Date
EP1334293A1 true EP1334293A1 (fr) 2003-08-13

Family

ID=7663173

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01996702A Withdrawn EP1334293A1 (fr) 2000-11-14 2001-11-02 Vis d'entrainement a billes

Country Status (4)

Country Link
EP (1) EP1334293A1 (fr)
JP (1) JP2004514101A (fr)
DE (1) DE10056275B4 (fr)
WO (1) WO2002040895A1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10242297A1 (de) * 2002-09-12 2004-03-18 Ina-Schaeffler Kg Kugelgewindetrieb
DE10352256A1 (de) * 2003-11-08 2005-06-09 Ina-Schaeffler Kg Wälzkörpergewindetrieb
DE102004023354A1 (de) * 2004-05-12 2005-12-08 Ina-Schaeffler Kg Kugelgewindetrieb
DE102004053204A1 (de) * 2004-11-04 2006-05-11 Ina-Schaeffler Kg Kugelgewindetrieb
DE102004055423A1 (de) * 2004-11-17 2006-05-24 Schaeffler Kg Kugelgewindetrieb
DE102005007875A1 (de) * 2005-02-21 2006-08-31 Lee, Mao-Tu Vorrichtung zur Geräuschdämpfung bei Hochgeschwindigkeitskugelgewindetrieben
JP4797560B2 (ja) * 2005-10-18 2011-10-19 日本精工株式会社 ボールねじ装置
DE102007033924A1 (de) * 2007-07-20 2009-01-22 Volkswagen Ag Kugelgewindetrieb
DE102008025349B4 (de) 2008-05-27 2019-12-05 Schaeffler Technologies AG & Co. KG Kugelgewindetrieb
DE102008047204A1 (de) 2008-09-15 2010-04-15 Volkswagen Ag Kugelgewindetrieb
DE102009050802A1 (de) 2009-10-27 2011-04-28 Volkswagen Ag Kugelgewindemutter
DE102010054134B3 (de) 2010-12-10 2012-04-12 Thyssenkrupp Presta Ag Kugelgewindetrieb
DE102016120248A1 (de) 2016-10-24 2018-04-26 Sfs Intec Holding Ag Kugelgewindetrieb
DE102016223878A1 (de) * 2016-12-01 2017-11-30 Schaeffler Technologies AG & Co. KG Gewindemutter für einen Kugelgewindetrieb
DE102019120813A1 (de) * 2019-08-01 2021-02-04 Schaeffler Technologies AG & Co. KG Verfahren zum Herstellen einer Gewindemutter eines Gewindetriebes, insbesondere Kugelgewindemutter eines Kugelgewindetriebes

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3667311A (en) * 1970-12-09 1972-06-06 Schrillo Co Recirculating ball screw
US4953419A (en) * 1989-09-19 1990-09-04 Dana Corporation Ball screw return system
US5373755A (en) * 1993-07-30 1994-12-20 Dana Corporation Skirt deflector for a ball nut and screw device
JPH0828648A (ja) * 1994-07-22 1996-02-02 Nippon Seiko Kk 外部循環式ボールねじ装置
DE19803026A1 (de) * 1998-01-27 1999-08-12 Hiwin Tech Corp Kugelumlaufsystem für Kugelgewindetriebe
JP4294115B2 (ja) * 1998-03-25 2009-07-08 Ｔｈｋ株式会社 ボールねじ装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0240895A1 *

Also Published As

Publication number Publication date
DE10056275A1 (de) 2002-05-23
JP2004514101A (ja) 2004-05-13
DE10056275B4 (de) 2009-06-04
WO2002040895A1 (fr) 2002-05-23

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