WO2001071222A1 - Arbre de commande realise sans enlevement de copeaux - Google Patents

Arbre de commande realise sans enlevement de copeaux Download PDF

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Publication number
WO2001071222A1
WO2001071222A1 PCT/EP2001/001665 EP0101665W WO0171222A1 WO 2001071222 A1 WO2001071222 A1 WO 2001071222A1 EP 0101665 W EP0101665 W EP 0101665W WO 0171222 A1 WO0171222 A1 WO 0171222A1
Authority
WO
WIPO (PCT)
Prior art keywords
switching
profile
shaft
shaft according
hollow body
Prior art date
Application number
PCT/EP2001/001665
Other languages
German (de)
English (en)
Inventor
Peter Jennes
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
Priority to DE10191073.8T priority Critical patent/DE10191073B4/de
Publication of WO2001071222A1 publication Critical patent/WO2001071222A1/fr

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
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • 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
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • F16H2063/3076—Selector shaft assembly, e.g. supporting, assembly or manufacturing of selector or shift shafts; Special details thereof
    • 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
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • F16H63/38—Detents

Definitions

  • the invention relates to a selector shaft which is intended for a gear shift of a gear change transmission.
  • the shift shaft which is displaceable and rotatable in the gear housing, enables a gear change, i.e. a gear change, with which the speed and torque of a transmission output shaft can be varied.
  • the selector shaft is in operative connection with drivers or transmission elements, which preferably engage in a form-fitting manner in a selector profile or a detent profile of the selector shaft.
  • drivers or transmission elements which preferably engage in a form-fitting manner in a selector profile or a detent profile of the selector shaft.
  • Such circuits are common in today's vehicles and known to every driver. This gear shift can be operated either manually or automatically.
  • Switching shafts of the previous type are usually solid shafts with partial cutouts to show the locking profile or the switching profile.
  • a complex and costly copy milling or contour milling is usually used for the production of this profile. These measures ensure the required position and location of the profile combs of the switching profile.
  • the partial milling which extends partially over the center of the shaft, causes a significant weakening, as a result of which the required strength of the selector shaft is no longer guaranteed. As a result, the selector shaft exceeds limit values for the deflection, with the result that hardness distortions occur and the selector shaft becomes unusable.
  • DE 198 05 924 A1 shows a section of a known transmission circuit.
  • This circuit comprises a selector shaft, which is designed as a tubular body, a pin fixed to the transmission housing engaging in each of the two tube ends, on which the selector shaft can be rotated and axially rotated via a bearing. is slidably arranged.
  • the selector shaft is provided with selector fingers that engage a driver for actuating a selector fork.
  • the known control shaft which is designed as a hollow body, is further provided with a separate locking sleeve which interacts with a ball catch arranged next to the control shaft, in order to limit the switching travel or to fix the position of a control shaft position.
  • This known selector shaft comprises many individual parts which are permanently connected to the selector shaft by a welded connection. The welding requires a lot of effort to avoid stress cracks or to maintain the required position and shape tolerances. This disadvantageously increases the manufacturing costs of this known control shaft.
  • the selector shaft according to the invention is provided with a switching profile or a latching profile, which comprises non-cutting, radially oriented beads and / or walls.
  • a shift fork or a locking device can be used as the transmission element, which engages in a form-fitting manner in the guide groove.
  • the invention which relates to a rotationally symmetrical, non-cutting switching shaft profile, improves the strength of the sound wave due to a material hardening that occurs in the forming process for producing the switching profile.
  • the rotationally symmetrical arrangement of the Switching profile furthermore does not require a precise mounting of the switching shaft, which can consequently be inserted into the transmission automatically, which results in a further cost advantage.
  • the invention thus realizes the demand for a cost-effective production of the entire selector shaft, wherein the switching or locking profiles can be positioned at any point on the selector shaft.
  • the invention also offers a further potential for savings, since switching shafts with different latching or switching profiles can be produced starting from a hollow body profile.
  • a circular kneading method is advantageously suitable for producing the switching profile according to the invention, by means of which the switching or latching profile of the switching shaft is shaped out of the wall of the hollow body by means of an informal kneading.
  • the plastic deformation of the material during rotary kneading results in a structural change, grain stretching, combined with an increase in mechanical strength and hardness.
  • the elastic limit is increased in the direction of loading and the microstructure changes into a kind of texture, with a favorable fiber course improving the strength especially at the points of the greatest deformation, the profile transitions. With the circular kneading process, an increase in tensile strength of approx. 20% can be achieved.
  • the circular kneading process is advantageously suitable for rotationally symmetrical shapes. Pipes in seamless drawn or welded design are preferably used as the starting material. In the area of cross-sectional transitions, the switching profile according to the invention is designed in such a way that sharp edges or jagged transitions are avoided.
  • the kneading process provided for the production enables the production of switching shafts according to the invention in large numbers and in ongoing production processes. processes.
  • the circular kneading process is therefore also suitable for large series production, as is required for selector shafts in vehicles, in particular passenger cars.
  • the circular kneading process enables the production of switch profiles in a quality that corresponds to fine machining, which can only be achieved with great effort during machining. Due to the structural changes that occur during the kneading process, which at the same time results in improved strength, an additional heat treatment of the control shaft can be dispensed with.
  • the circular kneading process used to manufacture the switching profile is suitable for both external profiles and internal profiles.
  • the shift shaft according to the invention designed as a hollow body, offers a weight advantage of up to 75%.
  • the invention further includes hydraulic high-pressure forming for producing the selector shaft according to the invention.
  • An internal high pressure process IHV is particularly suitable for this, with which almost any material forming can be achieved.
  • This stretch forming technology for example working with high water pressure, is suitable for free shaping in metal, but also for a predetermined contour, for example a switching profile.
  • the invention also includes control shafts in which the switching profile is molded into the wall of the hollow body at any point.
  • the switching profile can be combined with a tubular body as a separate component produced without cutting.
  • it advantageously has axial lugs arranged on both end faces or axially aligned fastening tabs arranged in sections, by means of which the separate switching profile is permanently attached to the tubular body.
  • the geometric design of the switching profile is preferably in the form of a trapezoidal cross section.
  • the selector profile can be designed as an inner or outer profile.
  • the non-cutting forming processes according to the invention enable both a switching profile emerging radially from the lateral surface of the hollow body and a profiling oriented in the direction of a longitudinal axis of the switching shaft.
  • the invention includes a control shaft with geometrically differently configured and aligned switching profiles, i. H.
  • the control shaft also has an internal profile.
  • the non-cutting manufacturing process of the selector shaft according to the invention also extends to areas of the selector shaft which are arranged offset to the selector profile, such as a bearing seat or a bearing raceway, with which the selector shaft is rotatably and displaceably arranged in the transmission housing.
  • a bearing seat can be designed, for example, as a cylindrical extension which is arranged radially offset from the rest of the outer surface of the selector shaft.
  • a cold-formable metal or a cold-formable alloy is provided as the material for the selector shaft according to the invention.
  • This can be, for example, a suitable carbon-containing steel that can be heat-treated but is also sufficiently extensible to enable it to be formed without cracking.
  • Suitable materials are, for example, 15CR3, 32CrMo4, 38CrSiV66 or 10 S 20.
  • Figure 1 shows a control shaft according to the invention in a half section with a radially outwardly directed switching profile
  • Figure 2 shows a section of a control shaft, the switching profile is directed radially inwards
  • FIG. 3 shows a section of a two-part shift shaft, in which a separate switching profile is placed on a tubular body.
  • the control shaft 1a shown in a half section in FIG. 1 comprises a rotationally symmetrical hollow body 2a.
  • a switching profile 4a which comprises two guide grooves 5, 6, is formed in a lateral surface 3 of the hollow body 2a by a non-cutting forming process.
  • the guide grooves 5, 6 are axially delimited by walls in the form of beads.
  • the walls 8a, 8b limit the guide groove 5 and the further guide groove 6 is laterally delimited by the walls 8b and 8c.
  • Common to all walls 8a, 8b, 8c is a trapezoidal cross-sectional profile, which together form a profile comb 10.
  • the geometrical design of the walls 8a, 8b, 8c with regard to the radial height and their longitudinal extent can be both the same and different, the shaping taking place as a function of the transmission element which engages in the guide groove 5a, 6a, or latches therein , Axially offset to the switching profile 4a by a cylindrical section 9, the switching shaft 1a is provided on both sides with a bearing seat 11, 12, which forms a length-limited, cylindrical receiving surface, for example for a roller bearing or a roller guide, in order to thereby cause an axial displacement and / or a rotary movement of the Enable shift shaft 1.
  • FIG. 2 shows a section of the control shaft 1b, the switching profile 4b of which, in contrast to the control shaft 1a, radially inwards, i. H. is oriented pointing in the direction of a longitudinal axis 13.
  • the non-cutting forming process according to the invention also enables the production of a selector shaft 1b with a selector profile 4b designed as an inner profile, which according to FIG. 2 is provided with a total of three guide grooves 5, 6, 7, each of which has a trapezoidal shaped cross-sectional profile.
  • FIG. 3 shows a two-part construction of a switching shaft 1c.
  • a switching profile 4c designed as a separate component is arranged on a tubular hollow body 2c.
  • the design of the switching profile 4c corresponds to the switching profile 4a shown in FIG. 1.
  • the lateral surface 3 of the hollow body 2c is served by a preferably cylindrical extension 14, 15, which is non-detachably, preferably by means of a weld, connected to the lateral surface 3 of the hollow body 2c.
  • this can also be provided with further separate shift profiles.

Abstract

La présente invention concerne un arbre de commande (1a) permettant le changement de vitesse, ledit arbre de commande formant une seule pièce avec un profil de changement de vitesse symétrique en rotation (4a) et étant réalisé grâce à un procédé de formage sans enlèvement de copeaux.
PCT/EP2001/001665 2000-03-21 2001-02-15 Arbre de commande realise sans enlevement de copeaux WO2001071222A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE10191073.8T DE10191073B4 (de) 2000-03-21 2001-02-15 Spanlos hergestellte Schaltwelle

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2000113878 DE10013878A1 (de) 2000-03-21 2000-03-21 Spanlos hergestellte Schaltwelle
DE10013878.0 2000-03-21

Publications (1)

Publication Number Publication Date
WO2001071222A1 true WO2001071222A1 (fr) 2001-09-27

Family

ID=7635698

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2001/001665 WO2001071222A1 (fr) 2000-03-21 2001-02-15 Arbre de commande realise sans enlevement de copeaux

Country Status (2)

Country Link
DE (2) DE10013878A1 (fr)
WO (1) WO2001071222A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1593882A3 (fr) * 2004-05-07 2006-12-06 FSG Automotive AG Procédé d'usinage d'un arbre de commande de vitesse pour une boîte de vitesses

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10360268A1 (de) * 2003-12-20 2005-08-04 Ina-Schaeffler Kg Schaltgabel
DE102008013227B4 (de) * 2008-03-07 2014-06-05 Koki Technik Transmission Systems Gmbh Verfahren zum Herstellen einer Verbindung eines Getriebebauteils
DE102009024027A1 (de) 2009-06-02 2010-12-09 Schaeffler Technologies Gmbh & Co. Kg Maschinenelement

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19725453A1 (de) * 1997-06-16 1998-02-05 Leico Werkzeugmaschb Gmbh & Co Verfahren zur Herstellung einer Hohlwelle
DE19727569A1 (de) * 1997-06-28 1999-01-07 Schaeffler Waelzlager Ohg Schaltwalze für ein Zahnräderwechselgetriebe
DE19805924A1 (de) 1998-02-13 1999-08-26 Kochendoerfer & Kiep Stanz Und Getriebe
DE19840681A1 (de) * 1998-09-07 2000-03-09 Schaeffler Waelzlager Ohg Mehrteilige Schaltwelle für ein Zahnräderwechselgetriebe

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19645791A1 (de) * 1996-11-07 1998-05-14 Schaeffler Waelzlager Ohg Spanlos hergestellte Schaltwalze für ein Zahnräderwechselgetriebe
FR2782768B1 (fr) * 1998-09-02 2000-11-03 Coutier Moulage Gen Ind Procede de fabrication d'une fourchette de boite de vitesses et fourchette ainsi obtenue
DE10029620B4 (de) * 1999-06-21 2010-10-28 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Schaltwelle für ein Schaltgetriebe und Verfahren zu ihrer Herstellung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19725453A1 (de) * 1997-06-16 1998-02-05 Leico Werkzeugmaschb Gmbh & Co Verfahren zur Herstellung einer Hohlwelle
DE19727569A1 (de) * 1997-06-28 1999-01-07 Schaeffler Waelzlager Ohg Schaltwalze für ein Zahnräderwechselgetriebe
DE19805924A1 (de) 1998-02-13 1999-08-26 Kochendoerfer & Kiep Stanz Und Getriebe
DE19840681A1 (de) * 1998-09-07 2000-03-09 Schaeffler Waelzlager Ohg Mehrteilige Schaltwelle für ein Zahnräderwechselgetriebe

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SCHMOECKEL D ET AL: "INTEGRATION DES AXIAL-RADIAL-UMFORMENS IN DEN HERSTELLUNGSPROZESS EINER RUNDGEKNETETEN GETRIEBEWELLE", STAHL UND EISEN,DE,VERLAG STAHLEISEN GMBH. DUSSELDORF, vol. 118, no. 2, 17 February 1998 (1998-02-17), pages 99 - 104,140, XP000733642, ISSN: 0340-4803 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1593882A3 (fr) * 2004-05-07 2006-12-06 FSG Automotive AG Procédé d'usinage d'un arbre de commande de vitesse pour une boîte de vitesses

Also Published As

Publication number Publication date
DE10191073B4 (de) 2016-06-23
DE10191073D2 (de) 2004-04-15
DE10013878A1 (de) 2001-09-27

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