EP0927086B1 - Verfahren zur herstellung von aussenhülsen für homokinetische gelenke - Google Patents

Verfahren zur herstellung von aussenhülsen für homokinetische gelenke Download PDF

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Publication number
EP0927086B1
EP0927086B1 EP97909228A EP97909228A EP0927086B1 EP 0927086 B1 EP0927086 B1 EP 0927086B1 EP 97909228 A EP97909228 A EP 97909228A EP 97909228 A EP97909228 A EP 97909228A EP 0927086 B1 EP0927086 B1 EP 0927086B1
Authority
EP
European Patent Office
Prior art keywords
tool
preform
ball tracks
guide surfaces
cage guide
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.)
Expired - Lifetime
Application number
EP97909228A
Other languages
English (en)
French (fr)
Other versions
EP0927086A1 (de
Inventor
Reiner Nolden
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.)
Ford Global Technologies LLC
Original Assignee
Ford Global Technologies LLC
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 Ford Global Technologies LLC filed Critical Ford Global Technologies LLC
Publication of EP0927086A1 publication Critical patent/EP0927086A1/de
Application granted granted Critical
Publication of EP0927086B1 publication Critical patent/EP0927086B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/76—Making machine elements elements not mentioned in one of the preceding groups
    • B21K1/762—Coupling members for conveying mechanical motion, e.g. universal joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J9/00—Forging presses
    • B21J9/02—Special design or construction
    • B21J9/025—Special design or construction with rolling or wobbling dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/76—Making machine elements elements not mentioned in one of the preceding groups
    • B21K1/762—Coupling members for conveying mechanical motion, e.g. universal joints
    • B21K1/765—Outer elements of coupling members

Definitions

  • the invention relates to a method for manufacturing outer parts of constant velocity joints of the kind set forth in the preamble of claim 1 (see for example DE-A-4 646 554).
  • German Offenlegungsschrift 37 12 301 discloses a press tool for plastic deformation of a preform having a cavity open on one side to produce non-undercut axial ball tracks and cage guide surfaces.
  • the preform is received in an outer tool and the shaping of the wall regions is then performed by an inner tool with the application of pressure.
  • the inner tool consists of an inner die having individual radial ribs which reach through segments of a sleeve die to provide a forming surface which is closed in the circumferential direction.
  • the joint between the two parts of the inner tool is always in the transition between the ball track forming region and the cage guide surface forming region.
  • the part of the inner tool for making the ball tracks is formed by a one-piece solid tool part which can accept large forces without distortion or change in shape. This makes it possible to shape the ball track portions so precisely that no finishing operation is needed in these regions.
  • the intervening undercut cage guide surface regions are formed by the outwardly crowned segments of the sleeve die of the inner tool, the segments of which, after removal of the inner die, can be removed from the finished workpiece by springing them radially inwards.
  • the known press tool has the disadvantage that the two-piece inner tool is extremely complex and costly to manufacture and, owing to the parting surfaces formed between the two parts of the tool, namely the inner die and the sleeve die, has increased susceptibility to wear.
  • a further disadvantage is that the tolerances required for making the forming tool in two parts necessarily lead to an increase in the workpiece tolerances, that is to say, the current tool tolerances must be added to the specified workpiece tolerances.
  • German Offenlegungsschrift 42 14 444 discloses a method for the manufacture of ball sockets for constant velocity joints wherein a cup-shaped blank is progressively locally plastically deformed radially as a function of time, with plastic reduction in section, to shape its inner form against a profiled mandrel which in the circumferential direction is corrugated and which in the axial direction has different convex curvatures which vary, preferably segmentally, around the circumference.
  • the profiled mandrel used here is multipart and consists of radially separable profiled mandrel segments.
  • the object of the invention is to provide a method for the manufacture of outer parts of constant velocity joints of the kind referred to in which the disadvantages of the known manufacturing process which have been pointed out are avoided and in which ball tracks can be made either without or with undercuts.
  • the inner tool 1 is in the form of a one-piece wobble pressing die the outer contour of which has, by segments, different convex curvatures and includes rib-shaped contours 4 for the ball tracks and adjacent contours 5 for the cage guide surfaces.
  • the corresponding outer contours 4 and 5 are designed on the basis of a particular orbital angle a in order to produce the desired final guide surfaces.
  • the preform 3 is received and fixed in an outer tool 2.
  • the outer tool 2 is moved upwards to the shaping die 1, which is still disposed centrally with respect to the machine axis, and then fixed.
  • the shaping die 1 is now set in wobbling movement.
  • An intermittent shaping force moves corresponding to the course of the movement - depending on the wobble frequency and the orbital angle ⁇ - circularly over the surfaces of the preform 3 which are being shaped.
  • the shaping die is rolled on the preform 3, i.e. between material and shaping tool 1 there is rolling sliding friction: this is considerably smaller than the frictional parameter in the conventional shaping process.
  • the yield stress of the material is only slightly exceeded by the maximum stress occurring, thereby ensuring a better flow of material.
  • the inner tool 1 is again disengaged centrally of the axis of the machine and the workpiece 3' can be ejected from the outer tool 2 by an ejector.
  • external splines 8 can be formed on the outer contour of the preform 3.
  • the outer splines 8 hold the preform 3 precisely in position and prevent it from twisting in the outer tool 2 under the influence of the wandering torque of the wobbling movement.
  • the external splines can be used as speed sensor for an ABS system.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Rolling Contact Bearings (AREA)

Claims (3)

  1. Verfahren zur Herstellung von Außenhülsen für homokinetische Gelenke durch spanloses Umformen eines Vorwerkstükkes (3), das einen einseitig offenen Hohlraum zur Erstellung von axialen Kugellaufbahnen und Käfigführungsflächen aufweist, wobei das Vorwerkstück (3) in einem Außenwerkzeug (2) aufgenommen wird und durch ein Innenwerkzeug (1) unter Druckanwendung die Innenwandbereiche zu Kugellaufbahnen (6) und Käfigführungsflächen (7) verformt werden, dadurch gekennzeichnet, daß das Innenwerkzeug (1) als einteiliger, segmentweise, unterschiedlich konvex geführter Taumelpreßstempel (1) ausgebildet ist, der zunächst zentrisch in den Hohlraum des Vorwerkstückes (3) eingebracht wird und darauf folgend unter mehrmaligen Taumelbewegungen mit einem entsprechenden Taumelwinkel (α) die gewünschte Endform der Kugellaufbahnen (6) und Käfigführungsflächen (7) erzeugt.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der Taumelpreßbewegung eine axiale Eintauchbewegung überlagert wird.
  3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß sowohl hinterschnittfreie als auch hinterschnittene Kugellaufbahnen (6) hergestellt werden können.
EP97909228A 1996-09-17 1997-09-02 Verfahren zur herstellung von aussenhülsen für homokinetische gelenke Expired - Lifetime EP0927086B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19637839 1996-09-17
DE19637839A DE19637839C1 (de) 1996-09-17 1996-09-17 Verfahren zur Herstellung von Gelenkaußenteilen von Gleichlaufgelenken
PCT/EP1997/004769 WO1998012006A1 (en) 1996-09-17 1997-09-02 Method for manufacturing outer parts of constant velocity joints

Publications (2)

Publication Number Publication Date
EP0927086A1 EP0927086A1 (de) 1999-07-07
EP0927086B1 true EP0927086B1 (de) 2000-02-23

Family

ID=7805872

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97909228A Expired - Lifetime EP0927086B1 (de) 1996-09-17 1997-09-02 Verfahren zur herstellung von aussenhülsen für homokinetische gelenke

Country Status (5)

Country Link
EP (1) EP0927086B1 (de)
JP (1) JP2001507992A (de)
DE (2) DE19637839C1 (de)
ES (1) ES2145586T3 (de)
WO (1) WO1998012006A1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE513561C2 (sv) * 1998-02-17 2000-10-02 Eco Lean Ab Behållare, sätt och anordning för att framställa en behållare samt sätt och anordning för att fylla en behållare
DE19915879A1 (de) * 1999-04-08 2000-10-12 Hirschvogel Umwelttechnik Verfahren zur Herstellung von Gleichlaufgelenken
DE19915758A1 (de) * 1999-04-08 2000-10-12 Hirschvogel Umformtechnik Gmbh Verfahren zum Herstellen eines Taumelstempels
EP1186363A1 (de) * 2000-09-12 2002-03-13 Visteon Global Technologies, Inc. Taumelwerkzeug
DE10323173A1 (de) * 2003-05-22 2004-12-09 Ina-Schaeffler Kg Schaltbarer hydraulischer Tassenstößel
DE102004060597A1 (de) * 2004-12-09 2006-06-14 Ex-Cell-O Gmbh Verfahren zur Herstellung eines Bauteils mit einer mechanischen Gebereinrichtung und Bauteil mit einer mechanischen Gebereinrichtung

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1572738A (en) * 1978-04-17 1980-08-06 Ransome Hoffmann Pollard Bearings
DE3202254C2 (de) * 1982-01-25 1986-02-20 Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen Verfahren und Vorrichtung zum Herstellen einer Zahnstange
JPH0671639B2 (ja) * 1985-03-04 1994-09-14 住友金属工業株式会社 アルミホイ−ル素材の製造方法
DE3712301C2 (de) * 1987-04-10 1994-04-28 Loehr & Bromkamp Gmbh Preßwerkzeug
CH685105A5 (de) * 1991-07-22 1995-03-31 Colcon Anstalt Taumelpresse.
DE4214444B4 (de) * 1992-05-06 2004-07-29 Hmp Engineering Gmbh Verfahren zur Herstellung von Kugelschalen für Gleichlaufgelenke sowie Profildorn zur Verwendung in dem Verfahren
JPH08112638A (ja) * 1994-10-14 1996-05-07 Sumitomo Metal Ind Ltd カップ形状品の鍛造成形方法
DE19525868A1 (de) * 1995-05-30 1996-12-05 Thyssen Industrie Verfahren zum Herstellen von ringförmigen Werkstücken aus Metall mit profiliertem Querschnitt und Walzwerk zu dessen Durchführung

Also Published As

Publication number Publication date
WO1998012006A1 (en) 1998-03-26
JP2001507992A (ja) 2001-06-19
ES2145586T3 (es) 2000-07-01
EP0927086A1 (de) 1999-07-07
DE69701331D1 (de) 2000-03-30
DE19637839C1 (de) 1997-10-30
DE69701331T2 (de) 2000-09-21

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