WO2008074560A2 - Procédé de fabrication d'un anneau de synchronisation d'un dispositif de synchronisation - Google Patents

Procédé de fabrication d'un anneau de synchronisation d'un dispositif de synchronisation Download PDF

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Publication number
WO2008074560A2
WO2008074560A2 PCT/EP2007/061734 EP2007061734W WO2008074560A2 WO 2008074560 A2 WO2008074560 A2 WO 2008074560A2 EP 2007061734 W EP2007061734 W EP 2007061734W WO 2008074560 A2 WO2008074560 A2 WO 2008074560A2
Authority
WO
WIPO (PCT)
Prior art keywords
friction surface
rolling
annular body
synchronizer ring
synchronizer
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/EP2007/061734
Other languages
German (de)
English (en)
Other versions
WO2008074560A3 (fr
Inventor
Franz Dellermann
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
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 Schaeffler KG filed Critical Schaeffler KG
Publication of WO2008074560A2 publication Critical patent/WO2008074560A2/fr
Publication of WO2008074560A3 publication Critical patent/WO2008074560A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
    • F16D23/02—Arrangements for synchronisation, also for power-operated clutches
    • F16D23/025—Synchro rings
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2250/00—Manufacturing; Assembly

Definitions

  • the present invention relates to a method for producing a synchronizer ring, in particular a synchronous intermediate ring for a synchronizing a gearbox, having an annular axis extending around an axis of symmetry, which has an inner friction surface and / or an outer friction surface for frictional start against a friction partner. Furthermore, the present invention relates to a synchronizer ring, in particular a synchronizer intermediate ring for a synchronizer, which is produced by means of a method comprising a rolling of the inner friction surface and / or the outer friction surface.
  • a chipless manufactured synchronizer ring for a synchronizer of a motor vehicle transmission comprises a molded from a metal sheet and substantially conical annular body with a conical to the axis of symmetry of the annular body extending outer friction surface and an axis of symmetry of the annular body conically extending inner friction surface.
  • the synchronizer ring is provided at least on one of said friction surfaces with at least one oil groove, wherein the friction surface itself is formed from the material of the annular body and wherein the oil groove is formed without cutting in the friction surface.
  • the oil grooves extend from a first axial end of the friction surface to a second axial end of the friction surface, and deviate in the longitudinal direction of the oil grooves from the direction of the symmetry axis and from the circumferential direction of the synchronizer ring.
  • the oil grooves have at least one axially open end, which terminates with one of the axial ends of the friction surface.
  • synchronizer rings have oil grooves, which are incorporated in a non-cutting forming passage in the friction surface, wherein the friction surface is formed from the material of the sheet itself.
  • the oil grooves may be introduced by embossing into the sheet stock prior to passing the cone-shaped ring or by rolling into an annular hollow body. This eliminates according to the prior art, the costs incurred to subsequently provide friction linings, for example made of sintered metal or a paper material by embossing operations with grooves. These friction linings are applied to the friction surface of the synchronizer ring, which is associated with the synchronizer ring according to the invention for forming a friction pairing.
  • the introduction of the grooves is integrated into the sequence of operations of the molding process of the synchronizer ring and therefore does not require additional steps to incorporate the oil grooves in the friction surfaces, for example by a machining process.
  • the synchronizer rings are further processed after passing through, ie after the sheet metal forming process by grinding. Furthermore, a curing process is usually necessary to give the synchronizer ring the hardness required for later use.
  • the invention includes the technical teaching that the method comprises the steps of providing a starting work piece for forming processing, forming the starting work piece to form at least the basic structure of the ring body, and re-rolling the ring body by means of a rolling process, wherein the finish rolling at least one rolling processing of the inner friction surface and / or the outer friction surface concerns.
  • the inventive method for producing a synchronizer ring offers the advantage that the method is constructed only of simple, mass production suitable and inexpensive process steps. An elaborate Grinding of the inner friction surface and the outer friction surface is eliminated, since the rolling according to the present invention is used for finishing the synchronizer ring.
  • the inventive method for producing a synchronizer ring which lends itself in particular for the production of a synchronous intermediate ring, consists only of forming process steps, and the synchronizer ring is made without cutting to its final applicability.
  • the method of ring rolling is used for the production of seamless rings, wherein a pre-ring is made by upsetting and centric punching from an initial workpiece.
  • the starting work can take place in the form of a pre-ring by a forming process of a sheet metal material, wherein the synchronizing ring of known type has a conical shape.
  • This conical shape can be produced by a penetration, a collar or deep drawing process, wherein a forging process represents a possible process variant for producing the starting workpiece with a ring structure with a conical profile.
  • the method for producing a synchronizer ring is not limited to any specific forming technique, but merely describes the rolling in the form of a rolling operation of at least the inner friction surface and / or the outer friction surface to substitute a machining operation.
  • the invention is not limited to a specific rolling process, but it is any type of Nachwalzens or rolling for finishing conceivable, which is suitable, a grinding of the synchronizer ring for producing the ready geometric shape and its surface of the ring body and in particular the inner and outer friction surface completely replace.
  • the method according to the present invention includes a machining, in particular further Surface and geometric configurations of a synchronizer ring not basically.
  • a hardening process is applied after the rolling of the annular body.
  • the hardening process follows the last forming process step, wherein also an intermittent hardening represents a possible sequence of the process steps.
  • the hardening process may include various hardening principles, which depends on the choice of the workpiece material.
  • conversion hardening can also find application as well as precipitation hardening, wherein the hardening method is used in particular in such a way that a negative influence on the surface of the annular body is avoided.
  • the Nachwalzens at least the inner friction surface and / or the outer friction surface is brought into the final use of the annular body as a synchronizer ring geometric shape.
  • re-rolling enables creation of geometrical inaccuracy and surface finish, which qualifies re-rolling as the last step in the production of the synchronizer ring.
  • the rolling is carried out at room temperature in order to achieve a work hardening of the material of the annular body.
  • the cold post-rolling or cold rolling describes a rolling process below the recrystallization temperature of the material of the annular body. As a result, the material undergoes strain hardening, whereby a hardness increase of the ring body can be achieved.
  • a Hohnbacter is applied to honing at least the inner friction surface and / or the outer friction surface.
  • the scorn method is not applied according to the idea of the present invention as a substitution method for grinding, but serves only to optimize the surface quality of the friction surfaces and is thus intended to improve dimensional and dimensional accuracy and primarily to improve the tribological surface properties of the grinding surfaces of the annular body.
  • the starting surface for honing may therefore be the rolled surface.
  • the rolling is carried out as profiling to roll in the inner friction surface and / or in the outer friction surface at least one Nutengeometrie.
  • the introduction of the groove geometry is used to improve the lubricating behavior of the oil used, since the groove geometries act as oil grooves, so that the oil for lubrication of the friction surfaces in the grooves collect and can be dissipated by this from the friction surface and is also provided for lubricating the friction surface
  • the configuration of the groove geometries introduced as oil grooves in the friction surfaces can comprise a plurality of oil grooves distributed on the circumference of the annular body, extending in a straight line or oriented obliquely to the circumferential direction of the synchronizer ring.
  • the oil grooves can be arranged arbitrarily to each other, for example, crossing each other. Further, there is the possibility that the friction surface has a plurality of distributed on its circumference, extending in a straight line and obliquely aligned with the circumferential direction of the synchronizer ring oil grooves, which are aligned parallel to each other.
  • the friction surface may further comprise a plurality of circumferentially distributed helical or helical or circumferential oil grooves.
  • the groove geometry is advantageously formed in the form of longitudinal oil grooves extending in the circumferential direction of the annular body. It is also possible that the groove geometry is formed in the form of transverse oil grooves, which extend in the direction or at an angle to the axis of symmetry.
  • the cross-sectional shape of the grooves is arbitrary and depending on the requirements of the synchronizer ring selectable. However, rounded cross-sectional shapes of the oil grooves are to be preferred in order to avoid any core stresses that may occur in operation in the groove bottom.
  • each individual groove can have a variable depth or a variable cross section in its course.
  • the cross section of a groove can extend or reduce in its course from the smaller to the larger cone diameter of the synchronizer ring.
  • Such a reduction is possible by changing the groove depth and / or the groove width in the course of the groove.
  • the circumferentially oriented annular grooves serve as an oil reservoir, for example, to avoid a lack of lubrication of the friction pair, wherein in the transverse grooves formed in the circumferential direction of the oil grooves absorb the oil for lubrication or release into the lubrication gap.
  • the present invention further relates to a synchronizer ring, in particular a synchronous intermediate ring for a synchronizer of a gearbox with an annular axis extending around an axis of symmetry, which has an inner friction surface and / or an outer friction surface for frictional start against a friction partner, wherein the annular body by means of a Method, comprising a rolling of the inner friction surface and the outer friction surface is made.
  • the material of the annular body has a structure formed by a rolling process and / or the surface of the inner friction surface and / or the outer friction surface of a structure formed by a rolling process.
  • the microstructure, which according to the invention the synchronizer ring can be formed as a work-hardened microstructure, which as an essential distinguishing criterion of a synchronizer ring according to the invention, which is finished by a rolling process, are used.
  • Figure 1 is a cross-sectional view of a means of the invention
  • FIG. 2 shows a synchronizer ring according to the illustration in FIG. 1, but with the latter having transverse oil grooves;
  • FIG. 3 shows a side view of a synchronizer ring according to the embodiment of FIG. 2.
  • the synchronizer ring 1 shown in FIG. 1 is designed as a synchronous intermediate ring and essentially comprises an annular body 3 which extends rotationally symmetrically about an axis of symmetry 2.
  • the basic structure of the synchronizer ring 1 corresponds to a cone-shaped annular portion, which is bounded in its inner side by an inner friction surface 4 and in its outer side by an outer friction surface 5.
  • the synchronizer ring 1 has longitudinal oil grooves 6, four longitudinal oil grooves 6 being provided on the inner friction surface 4, whereas the outer friction surface 5 comprises five longitudinal oil grooves.
  • the longitudinal oil grooves 6 extend in the circumferential direction in the inner and outer friction surfaces 4, 5 of the synchronizer ring 1.
  • the inner friction surface 4 and the outer friction surface 5 are according to the geometric configuration, such as this is shown in Figure 1, produced by a Nachwalzen.
  • the friction surfaces 4 and 5 designed according to the illustration have a surface quality as well as a dimensional and dimensional accuracy, so that the synchronizer ring 1 can be used directly with the surface processed by the rolling.
  • the synchronizer ring 1 Mit psychology 8, which extend in the installed state of the synchronizer ring 1 in corresponding recesses, for example, a coupling body in order to transmit the applied frictional torque in a known manner.
  • three driver projections 8 are provided distributed on the circumference and extend on the cone side of the synchronizer ring 1, which has the larger diameter of the cone.
  • FIG. 2 shows another embodiment of a synchronizer ring 1 according to the invention, which is brought by means of a Nachwalzens in the ready-to-use and final shape.
  • the synchronizer ring 1 essentially comprises an annular body 3, which extends around an axis of symmetry 2 around.
  • the annular body 3 is bounded on the inside by an inner friction surface 4 and on the outside by an outer friction surface 5, transverse oil grooves 7 being introduced in both the inner and outer friction surfaces 4 and 5, which extend uniformly over the circumference of the synchronizer body 1 ,
  • the groove direction of the transverse oil grooves 7 extends essentially in the direction of the axis of symmetry 2 or in a direction inclined at an angle to the symmetry axis 2.
  • FIG. 3 shows the geometric configuration of the transverse oil grooves 7 in a side view from the direction of the symmetry axis 2.
  • the synchronizer ring 1 has, as shown both on its inner friction surface 4 and on its outer friction surface 5 a plurality of transverse oil grooves 7, the synchronizer ring 1 with its annular body 3 assumes a rotationally symmetrical overall shape, which extends around the symmetry axis 2 around.
  • the transverse oil grooves 7 have a substantially rectangular cross-section, and are located alternately on the inner and on the endeavorreib Status 4th and 5. Thus, no transverse oil grooves 7 are directly opposite to avoid unnecessary cross-sectional reduction.
  • the synchronizer ring 1, as shown in FIG. 3 has three driver projections 8, which extend at an angle of 120 ° to each other on the front plane surface of the synchronizer ring 1.
  • the Querölnuten 7 extend to the Anformung the driver. 8
  • the invention is not limited in its execution to the above-mentioned preferred embodiment. Rather, a number of variants is conceivable, which makes use of the illustrated solution even with fundamentally different types of use.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Operated Clutches (AREA)

Abstract

L'invention concerne un procédé de fabrication d'un anneau de synchronisation (1), notamment d'un anneau intermédiaire de synchronisation pour un dispositif de synchronisation d'une boîte de vitesses, comprenant un corps annulaire (3) qui s'étend autour d'un axe de symétrie (2) et qui présente une surface de friction intérieure (4) et/ou une surface de friction extérieure (5), pour venir en portée de friction contre un partenaire de friction. Ce procédé comprend au moins les étapes suivantes : mise à disposition d'une pièce de départ pour l'usinage par formage; formage de la pièce de départ, pour former au moins la structure de base du corps annulaire (3); laminage de correction du corps annulaire (3) au moyen d'un processus de laminage, sachant que le laminage de correction comprend au moins un laminage de la surface de friction intérieure (4) et/ou de la surface de friction extérieure (5).
PCT/EP2007/061734 2006-12-19 2007-10-31 Procédé de fabrication d'un anneau de synchronisation d'un dispositif de synchronisation Ceased WO2008074560A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006059868.7 2006-12-19
DE200610059868 DE102006059868A1 (de) 2006-12-19 2006-12-19 Verfahren zur Herstellung eines Synchronringes einer Synchronisiereinrichtung

Publications (2)

Publication Number Publication Date
WO2008074560A2 true WO2008074560A2 (fr) 2008-06-26
WO2008074560A3 WO2008074560A3 (fr) 2009-04-09

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PCT/EP2007/061734 Ceased WO2008074560A2 (fr) 2006-12-19 2007-10-31 Procédé de fabrication d'un anneau de synchronisation d'un dispositif de synchronisation

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DE (1) DE102006059868A1 (fr)
WO (1) WO2008074560A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107303635A (zh) * 2016-04-19 2017-10-31 贺尔碧格传动技术控股有限公司 同步手动变速器组件的滑动套筒的制造方法及滑动套筒

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008052502A1 (de) * 2008-10-21 2010-04-22 Schaeffler Kg Synchronring und Verfahren zu seiner Fertigung
DE102011120343B4 (de) 2011-11-30 2016-03-31 Getrag Getriebe- Und Zahnradfabrik Hermann Hagenmeyer Gmbh & Cie Kg Verfahren zur Herstellung eines Kupplungskörpers sowie Kupplungskörper für eine Synchronisiereinrichtung
DE102015100869B4 (de) 2015-01-21 2016-10-13 Hoerbiger Antriebstechnik Holding Gmbh Verfahren zur Herstellung eines Synchronrings sowie Synchronring für synchronisierte Schaltgetriebe
DE102016113422A1 (de) 2016-07-20 2018-01-25 Getrag Getriebe- Und Zahnradfabrik Hermann Hagenmeyer Gmbh & Cie Kg Reibring und Mehrfachkegel-Synchronschaltkupplung

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987006314A1 (fr) * 1986-04-16 1987-10-22 Zahnradfabrik Friedrichshafen Ag Bague de synchronisation
JPH01172634A (ja) * 1987-12-26 1989-07-07 Nsk Warner Kk シンクロナイザリングとその成形装置及びその成形方法
DE4334497A1 (de) * 1993-10-09 1995-04-13 Zahnradfabrik Friedrichshafen Synchronring und Verfahren zu seiner Herstellung
DE19537209A1 (de) * 1995-10-06 1997-04-10 Schaeffler Waelzlager Kg Verfahren zum Herstellen von Synchronringen
JPH11223225A (ja) * 1997-12-03 1999-08-17 Nippon Seiko Kk シンクロナイザリングの製造方法
JPH11179481A (ja) * 1997-12-18 1999-07-06 Mitsubishi Steel Mfg Co Ltd 変速機用センターリングの製造方法
DE19821565B4 (de) * 1998-05-14 2006-08-31 Schaeffler Kg Synchronkörper einer Synchronisiereinrichtung
DE19853896A1 (de) * 1998-11-23 2000-05-25 Schaeffler Waelzlager Ohg Anordnung und Ausführung von Synchronringen als spanlos geformte Blechteile
DE19858987A1 (de) * 1998-12-21 2000-06-29 Schaeffler Waelzlager Ohg Spanlos gefertigter Synchronring mit strukturierten Reibflächen
DE102004060016A1 (de) * 2004-12-14 2006-06-22 Schaeffler Kg Reibpaarung mit wenigstens einem ersten Reibkörper als Gegenkörper
DE102006006024B4 (de) * 2006-02-08 2013-12-12 Ab Skf Verfahren zum Herstellen von Ringen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107303635A (zh) * 2016-04-19 2017-10-31 贺尔碧格传动技术控股有限公司 同步手动变速器组件的滑动套筒的制造方法及滑动套筒

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WO2008074560A3 (fr) 2009-04-09
DE102006059868A1 (de) 2008-06-26

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