WO2024175151A1 - Vis-mère et procédé de fabrication d'une vis-mère - Google Patents

Vis-mère et procédé de fabrication d'une vis-mère Download PDF

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Publication number
WO2024175151A1
WO2024175151A1 PCT/DE2024/100112 DE2024100112W WO2024175151A1 WO 2024175151 A1 WO2024175151 A1 WO 2024175151A1 DE 2024100112 W DE2024100112 W DE 2024100112W WO 2024175151 A1 WO2024175151 A1 WO 2024175151A1
Authority
WO
WIPO (PCT)
Prior art keywords
outer part
inner sleeve
tool
threaded spindle
sleeve
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.)
Ceased
Application number
PCT/DE2024/100112
Other languages
German (de)
English (en)
Inventor
Mario Kreutzer
Richard Baier
Peter Kares
Thomas Motz
Bastian Kettler
Paul Heinz
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.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and Co 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 Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Priority to CN202480006887.7A priority Critical patent/CN120530272A/zh
Publication of WO2024175151A1 publication Critical patent/WO2024175151A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • 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
    • F16H2025/2481—Special features for facilitating the manufacturing of spindles, nuts, or sleeves of screw devices
    • 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
    • F16H2025/249—Materials or coatings for screws or nuts

Definitions

  • the invention relates to a threaded spindle intended for use in a screw drive, in particular a ball screw drive, according to the preamble of claim 1. Furthermore, the invention relates to a method for producing such a threaded spindle.
  • a ball screw drive which comprises a threaded spindle of the generic type is known, for example, from DE 10 2016 222 894 B4.
  • the threaded spindle of the known ball screw drive is designed as a hollow spindle.
  • An outer part, which has a thread, is assembled with an inner sleeve without additional components.
  • the inner sleeve has a collar which projects beyond the outer part on the front side and onto which a stop element is formed which is intended to interact with a stop contour of a ball screw nut of the ball screw drive.
  • a ball screw drive disclosed in DE 33 08 149 A1 also has a threaded spindle designed as a hollow shaft.
  • the balls rolling in the threads of the threaded spindle are mounted in a ball cage that is significantly wider than the nut of the ball screw drive.
  • thinner-walled sleeves are attached compared to the nut, which prevent the balls from falling out. Thanks to the two sleeves rigidly connected to the nut, no ball return is required when the adjustment range of the ball screw drive is limited due to its principle.
  • DE 10 2009 045 857 A1 describes a method for producing a spindle for a spindle drive.
  • the method described provides that a spiral with a flat rectangular ring cross-section is arranged on a thin-walled tube and then the tube is formed onto a base area of the spiral by applying high pressure from the inside.
  • the hollow spindle produced in this way is intended to For example, it can be used in an electromechanical brake booster or in an electromechanical power steering system.
  • WO 2013/029842 A1 Another method for producing a threaded part for a roller screw drive, i.e. a roller screw drive intended for use in an electromechanical brake booster, is set out in WO 2013/029842 A1.
  • threads are produced by forming from metal and overmolded with tubular support parts made of plastic.
  • the documents DE 10 2019 114 276 A1 and DE 10 2019 120 812 A1 deal with threaded nuts for ball screws.
  • thread-like profiled sleeves are formed from sheet steel.
  • the invention is based on the object of further developing threaded spindles designed as hollow shafts compared to the aforementioned prior art, in particular with regard to manufacturing aspects, whereby good possibilities for connecting the threaded spindle to another, also hollow machine element should be provided.
  • the threaded spindle comprises, in a known basic concept, an inner sleeve and an outer part which is firmly connected to the inner sleeve and is also sleeve-shaped and has a thread, whereby the two nested parts, that is, the inner sleeve and the outer part are made of different, in both cases metallic materials.
  • the inner sleeve is molded into the outer part in a form-fitting manner, reflecting the thread.
  • the inner surface of the inner sleeve can also have a thread-like structure that is essentially the same, whereby in this case the embossing depth achieved by forming, which is to be measured in the radial direction of the inner sleeve and the outer part, is reduced again compared to the depth of the structure embossed into the outer surface of the inner sleeve.
  • the threaded spindle is a component of a ball screw or other rolling screw drive in various possible designs.
  • the threaded spindle functions either as a rotating drive element or as a rotationally secured, movable output element of the ball screw drive or other rolling screw drive.
  • the threaded spindle can be designed as a drive or output element of a simple motion thread.
  • the inner sleeve is preferably made of a weldable material in order to enable a welded connection with another metallic machine element, in particular designed as a tube, sleeve or disc.
  • the criterion of weldability plays no role in a typical design.
  • hardening of the outer part is provided.
  • the outer part can be hardened conductively or inductively.
  • the high frequency of the induction coil ensures that the induced current density in the areas of the workpiece close to the surface is particularly high, and thus mainly surface hardening occurs.
  • Laser or electron beam hardening can also be considered. If hardening is carried out in a furnace, austenitizing can take place under a protective gas or vacuum atmosphere. This step can be followed by quenching with a suitable quenching medium in a known manner. In a known manner, tempering of the threaded spindle can also be provided as part of the heat treatment.
  • the outer sleeve i.e. the sleeve-shaped outer part
  • the thread can basically be a single or multiple-start thread, for example a two- or three-start thread.
  • threaded spindles can be manufactured in the following steps:
  • the threaded spindle formed in the previous step consisting of the inner sleeve and the outer part, from the tool.
  • the blanks from which the inner sleeve and the sleeve-shaped outer part of the final threaded spindle are to be formed are referred to as inner sleeve and outer part.
  • the sleeve-shaped outer part of the threaded spindle is also referred to as the outer layer.
  • a roll-clad sheet can also be used as the starting product for producing the threaded spindle.
  • roll-clad sheets reference is made to EP 4 067 525 A1 as background information.
  • the forming can take place either by applying pressure from the inside to the outside, or by applying pressure from the outside. In the latter case, for example, a smooth dome is used to hold the inner sleeve.
  • the workpiece is then formed using a tool that has at least one radially adjustable roller, which has the thread contour to be created as a negative contour.
  • a tool that has at least one radially adjustable roller, which has the thread contour to be created as a negative contour.
  • an arrangement of several profiled rollers for example three rollers, is used, which surround the workpiece, i.e. the threaded spindle being processed, in a star shape.
  • the processing can involve one or more radial feeding and axial movement of the rollers.
  • the arrangement of all rollers - in extreme cases just a single roller - rotates around the central axis of the workpiece, with each roller rotating around its own axis at the same time.
  • axial and rotary movements are synchronized in such a way that the desired thread pitch is achieved.
  • Deep drawing is particularly suitable as a technology for the chipless production of the inner sleeve and the sleeve-shaped outer part, regardless of the subsequent formation of the thread.
  • the inner sleeve and/or the sleeve-shaped outer part can also be
  • the outer part can be a drawn tube.
  • a rolled version is also possible.
  • the ends of the sheet metal strip bent into a sleeve are connected to one another, in particular by welding.
  • the weld seam can run either diagonally or parallel to the center axis of the inner sleeve and thus also of the later threaded spindle.
  • the blank of the inner sleeve already has a flange.
  • Such a flange i.e. an outward-facing rim, represents an effective axial safeguard against displacement of the outer part in one direction.
  • the starting products for the production of the two-layer threaded spindle are available, they are formed by applying pressure from the inside, thereby causing plastic deformation in a tool.
  • the pressure can act on the sleeve-shaped blank in a known manner through a tool via rollers, a hydraulic medium or through a formless or rubber-elastic auxiliary material.
  • the formation of seams on the workpiece is fundamentally excluded.
  • the workpiece i.e. the threaded spindle
  • the unscrewing process is made easier by specifically changing the temperature of the workpiece and/or the tool.
  • a mechanical change in the tool diameter can also be provided in a production device in order to make the unscrewing process easier.
  • the use of a multi-part tool is also possible. Even in cases where the tool is multi-part, the tool can form at least one closed ring. This ring has the thread structure on the inside, which is to be transferred to the workpiece. To complete the tool, a further, comparatively small ring can be provided, which has no thread-like structure and accordingly defines the shape of a section of the workpiece that has a smooth wall.
  • the inner sleeve which is a non-hardened component of the threaded spindle, can be connected to a part that is to be attached to the threaded spindle, such as an adapter tube, using any generally known welding process.
  • the deposit material i.e. the outer layer
  • the deposit material can be partially removed before welding in order to ensure the desired weldability.
  • hardening can take place either before the adapter is welded on or after the spindle assembly, which is made up of the threaded spindle and the welded adapter, has been manufactured.
  • the inner sleeve and the sleeve-shaped outer part are initially available as separate individual parts, there are various possibilities for reshaping these individual parts and joining them together.
  • the sleeve-shaped outer part is first inserted into the tool and at least partially formed.
  • the inner sleeve is then inserted into the outer part in the tool and pressed against the inner circumferential surface of the outer part by exerting pressure and undergoing plastic deformation, whereby this process also gives the outer ring its final shape.
  • This variant of the process is characterized by the fact that it can also be used with large wall thicknesses of the sleeve-shaped parts to be formed.
  • the inner sleeve is inserted into the tool together with the sleeve-shaped outer part.
  • Both parts i.e. the inner sleeve as well as the outer part, initially have only smooth inner and outer surfaces. After the aforementioned parts have been positioned in the tool, the parts are deformed simultaneously in the tool according to this variant.
  • the thread structure of the tool is ultimately also visible on the inner sleeve, which creates a permanently stable connection between the inner sleeve and the outer part.
  • the threaded spindle i.e. hollow spindle, is particularly suitable for use in an electromechanical actuator of a motor vehicle. This can be, for example, a chassis actuator for level adjustment.
  • the threaded spindle designed as a sheet metal composite spindle can also be used in a linear drive of a stationary system.
  • Fig. 1 shows a partially sectioned view of a threaded spindle designed as a sheet metal composite hollow spindle
  • FIG. 2 a detail of the threaded spindle according to Figure 1 in a sectional view
  • FIG. 3 shows a threaded spindle modified compared to the embodiment according to Figure 1 in a representation analogous to Figure 2,
  • Fig. 4 a spindle assembly which is formed from the threaded spindle according to Figure 1 and a tubular adapter,
  • Fig. 5 shows a ball screw drive comprising the spindle assembly according to Figure 4 as the output element and a ball screw nut as the drive element,
  • Fig. 7 shows an arrangement comprising a one-piece tool for forming a multi-part threaded spindle
  • Fig. 8 shows an arrangement of an inner sleeve and a sleeve-shaped outer part intended for forming in the tool according to Figure 7,
  • Fig. 9 shows a modified arrangement of two sleeve-shaped parts compared to the arrangement according to Figure 8, which are to be formed into a threaded spindle,
  • Fig. 12 an arrangement resulting from the arrangement according to Figure 11, created by internal pressure loading of the inner sleeve with the outer part completely formed on the outside,
  • Fig. 13, 14 an alternative arrangement for forming a multi-part threaded spindle in different representations
  • Fig. 15 a detail from figure 13.
  • a threaded spindle is composed of an inner sleeve 2 and an outer part 3, which is also sleeve-shaped and is firmly connected to the inner sleeve 2 without any separate connecting elements.
  • the inner sleeve 2 is made of a weldable material and optionally has, as an example shown in Figures 8 and 9, has a flange 4 on one of its front sides.
  • a thread 5 is formed on the outer surface of the outer part 3.
  • the outer part 3 is hardened at least on its outer surface, with possible transitions between a hardened area 6 and an unhardened area 7 being outlined in Figures 2 and 3.
  • the geometry of the threaded spindle 1 according to Figure 3 corresponds to the geometry of the threaded spindle 1 according to Figures 1 and 2.
  • the inner sleeve 2 has a thread-like contour 8 on its outer circumferential surface, which, with a reduced embossing depth, weakens the thread contour, designated overall with 9, formed by the thread pitch 5.
  • the inner circumferential surface of the sleeve-shaped outer part 3 is correspondingly reshaped so that there is full-surface, positive contact between the inner sleeve 2 and the also sleeve-shaped outer part 3. Deviations from the smooth cylindrical shape of the inner surface of the inner sleeve 2 are not shown in Figures 2 and 3.
  • the wall thickness of the inner sleeve 2 is significantly greater than the wall thickness of the outer part 3.
  • the inner sleeve 2 protrudes beyond the outer part 3 in the form of a smooth cylindrical projection 11.
  • An adapter tube 12 is pushed onto the projection 11.
  • the adapter tube 12 is connected to the threaded spindle 1 by a weld seam 13.
  • the entirety of the threaded spindle 1 and adapter tube 12 is referred to as the spindle assembly 14.
  • the adapter tube 12 has a widened region 15 pushed onto the inner sleeve 2, the inner and outer diameter of which corresponds approximately to the inner and outer diameter of the outer part 3.
  • a tubular region 16 which is considerably longer than the widened region 15 has an outer diameter which corresponds to the inner diameter of the inner sleeve 2.
  • the tubular region 16 is connected to the widened region 15 via a conical region 17.
  • two flats 18 are formed, which run in strip form in the longitudinal direction of the spindle assembly 14 and extend to that end face of the adapter tube 12 which faces away from the projection 11 of the threaded spindle 1.
  • the diametrically opposed flats 18 of the adapter tube 12 can be used, for example, as anti-twisting contours of the spindle assembly 14.
  • the spindle assembly 14 is shown as part of a ball screw drive designated as 10.
  • the ball screw drive 10 whose center axis is designated MA, also comprises a ball screw nut 19.
  • rolling elements i.e. balls
  • Optional means for ball return are not shown.
  • a pulley 21 is firmly connected to the ball screw nut 19, as can also be seen from Figure 6.
  • the ball screw nut 19 can thus be used as a rotating drive element of the screw drive 10.
  • the pulley 21 represents the output element of a belt transmission, in this case a belt drive, which is connected upstream of the screw drive 10 and is designed as a reduction gear.
  • Figure 7 shows a detail of a manufacturing device, designated overall by 22, for forming the threaded spindle 1 from the inner sleeve 2 and the outer part 3.
  • a manufacturing device designated overall by 22, for forming the threaded spindle 1 from the inner sleeve 2 and the outer part 3.
  • the tool 23 has an inner surface 24 structured in the manner of a thread, which determines the later thread contour 9 of the outer part 3.
  • the outer part 3 is surface hardened using a hardening system (not shown), which is also part of the manufacturing device 22. Only after hardening is the threaded spindle 1 connected to the attachment piece 12 by welding.
  • the spindle assembly 14 is heat-treated as a whole, i.e. the adapter tube 12 is welded to the not yet hardened threaded spindle 1.
  • a connection between the threaded spindle 1 and the adapter tube 12 by means of a form-fitting connection produced by forming or by means of combined connection processes is also possible.
  • the tool 23 is one-piece, which means that the finished threaded spindle 1 can be unscrewed from the tool 23 after the forming process has been completed.
  • the forming can be carried out in various ways, in particular by internal high pressure or by a rolling tool. This applies regardless of the form of the inner sleeve 2.
  • the inner sleeve 2 is in the form of a wound sheet whose ends are welded together.
  • the weld seam designated 25 has a screw shape according to Figure 8 and a straight alignment parallel to the central axis MA according to Figure 9.
  • Figure 10 outlines the first step of a modified method for producing the threaded spindle 1 compared to Figure 7.
  • initially only the sleeve-shaped outer part 3 is inserted into the tool 23. Due to the pressure p acting on the inner circumferential surface of the outer part 3, its outer circumferential surface is at least partially pressed into the thread-like structured inner surface 24 of the tool 23, whereby a plastic deformation of the outer part 3 takes place.
  • the inner sleeve 2 is pushed into the outer part 3 located in the tool 23.
  • the outer part 3 is not yet fully formed.
  • the final formation of the outer part 3 only takes place when internal pressure is applied to the inner sleeve 2, whereby, as can be seen from Figure 12, the material of the outer part 3 adapts completely to the shape of the inner surface 24 of the tool 23.
  • Figure 12 shows an idealized, completely cylindrical shape of the inner sleeve 2.
  • the outer surface of the inner sleeve 2 adapts to the shape of the inner surface of the outer part 3 with increasing pressure until the state of the threaded spindle 1 shown in Figure 1 is achieved.
  • the threaded spindle 1 is unscrewed from the tool 23 after the forming has taken place.
  • the forming can take place while the tool 23 is mechanically compressed. Before unscrewing, the compression of the tool 23 caused from the outside is released. and thus the tool diameter is increased slightly, but to a technically relevant extent. It is also possible to bring about diameter changes through targeted temperature changes of the workpiece 1 and/or the tool 23.
  • Figures 13 to 15 illustrate a production system 22 that can be used as an alternative to the device according to Fig. 7 for forming the two-part threaded spindle 1.
  • a section line B-B (see Fig. 13) is drawn.
  • Fig. 15 shows a detail from Fig. 13.
  • the arrangement of inner sleeve 2 and outer part 3 is pulled onto a mandrel 26.
  • the thread contour 9 is then produced by three profile rollers 27, which are arranged at angular intervals of 120 degrees around the central axis MA of the threaded spindle 1 being manufactured.
  • Each profile roller 27 has a pitchless profiling 28, which has the profiling of the thread 5 to be produced, whereby a possible inclination of the profile rollers 27 with respect to the central axis MA also plays a role.
  • the profile rollers 27 are advanced on the outer part 3 during rolling so that the thread contour 9 is created with the desired pitch.
  • the mandrel 26 is optionally provided with a central bore so that it can be subjected to hydraulic pressure for clamping the workpiece, i.e. the arrangement of inner sleeve 2 and outer part 3.
  • the workpiece is held stably on the mandrel 26 during the formation of the thread contour 9, so that neither relative rotations between the inner sleeve 2 and the outer part 3 nor relative rotations between the entire threaded spindle 1 and the mandrel 26 occur.

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

Abstract

Une vis-mère (1) pour un entraînement fileté (10), en particulier un entraînement à vis à billes, comprend un manchon interne (2) et une partie externe en forme de manchon (3) qui est reliée de manière fixe au manchon interne et qui a un filetage de vis (5), le manchon interne (2) et la partie externe (3) étant constitués de matériaux différents. Le manchon interne (2) est formé par complémentarité de forme dans la partie externe (3) de telle sorte que le manchon interne copie le filetage de vis (5).
PCT/DE2024/100112 2023-02-21 2024-02-08 Vis-mère et procédé de fabrication d'une vis-mère Ceased WO2024175151A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202480006887.7A CN120530272A (zh) 2023-02-21 2024-02-08 导螺杆以及用于制造导螺杆的方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102023104230.0 2023-02-21
DE102023104230.0A DE102023104230A1 (de) 2023-02-21 2023-02-21 Gewindespindel und Verfahren zur Herstellung einer Gewindespindel

Publications (1)

Publication Number Publication Date
WO2024175151A1 true WO2024175151A1 (fr) 2024-08-29

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Application Number Title Priority Date Filing Date
PCT/DE2024/100112 Ceased WO2024175151A1 (fr) 2023-02-21 2024-02-08 Vis-mère et procédé de fabrication d'une vis-mère

Country Status (3)

Country Link
CN (1) CN120530272A (fr)
DE (1) DE102023104230A1 (fr)
WO (1) WO2024175151A1 (fr)

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EP4067525A1 (fr) 2019-11-29 2022-10-05 Baoshan Iron & Steel Co., Ltd. Tôle plaquée de laminage d'acier au carbone et d'acier inoxydable austénitique et son procédé de fabrication

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DE3308149A1 (de) 1983-03-08 1984-09-13 P.-Gerhard Dr.-Ing. 3000 Hannover Althaus Kugel-gewinde-antrieb zur umwandlung einer rotationsbewegung in eine translatorische bewegung oder umgekehrt
DE10028968A1 (de) * 2000-06-10 2001-12-13 Schaeffler Waelzlager Ohg Hülse für einen Gewindetrieb
DE102009045857A1 (de) 2009-10-20 2011-04-21 Robert Bosch Gmbh Verfahren zur Herstellung einer Spindel für einen Spindeltrieb, Wälzgewindetrieb mit einer solchen Spindel und Verwendung des Wälzgewindetriebs
DE102011081966A1 (de) * 2011-09-01 2013-03-07 Robert Bosch Gmbh Verfahren zur Herstellung eines Gewindeteils als Verbundteil, Wälzschraubtrieb, Linearaktuator, elektromechanischer Bremskraftverstärker mit einem solchen Verbundteil
WO2013029842A1 (fr) 2011-09-01 2013-03-07 Robert Bosch Gmbh Procédé de fabrication d'une pièce filetée sous la forme d'une pièce composite, mécanisme à vis à bille, actionneur linéaire, servofrein électromécanique équipé de ladite pièce composite
DE102014218405B3 (de) * 2014-09-15 2015-11-05 Schaeffler Technologies AG & Co. KG Verfahren zur Herstellung einer Spindel für einen Kugelgewindetrieb, sowie eine danach hergestellte Spindel
DE102016222894B4 (de) 2016-11-21 2019-05-09 Schaeffler Technologies AG & Co. KG Kugelgewindetrieb
DE102018217960A1 (de) * 2018-10-19 2020-04-23 Thyssenkrupp Ag Verstellantrieb für eine Lenksäule und Lenksäule für ein Kraftfahrzeug
DE102019114276A1 (de) 2019-05-28 2020-12-03 Schaeffler Technologies AG & Co. KG Profilierte Mutter eines Gewindetriebes, insbesondere Kugelgewindemutter eines Kugelgewindetriebes und Verfahren zu deren Herstellung
DE102019120812A1 (de) 2019-08-01 2021-02-04 Schaeffler Technologies AG & Co. KG Verfahren zum Herstellen einer Gewindemutter eines Gewindetriebes, insbesondere Kugelgewindemutter eines Kugelgewindetriebes
EP4067525A1 (fr) 2019-11-29 2022-10-05 Baoshan Iron & Steel Co., Ltd. Tôle plaquée de laminage d'acier au carbone et d'acier inoxydable austénitique et son procédé de fabrication
DE102020132816A1 (de) * 2020-12-09 2022-06-09 Schaeffler Technologies AG & Co. KG Gewindemutter eines Kugelgewindetriebes

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