EP1165272B1 - Verfahren zur herstellung von gleichlaufgelenken - Google Patents
Verfahren zur herstellung von gleichlaufgelenken Download PDFInfo
- Publication number
- EP1165272B1 EP1165272B1 EP00912491A EP00912491A EP1165272B1 EP 1165272 B1 EP1165272 B1 EP 1165272B1 EP 00912491 A EP00912491 A EP 00912491A EP 00912491 A EP00912491 A EP 00912491A EP 1165272 B1 EP1165272 B1 EP 1165272B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wobble
- die
- press die
- wall
- hollow chamber
- 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
Links
Images
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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49636—Process for making bearing or component thereof
- Y10T29/49643—Rotary bearing
- Y10T29/49679—Anti-friction bearing or component thereof
- Y10T29/49689—Race making
Definitions
- the present invention relates to a method for producing outer parts of Cross groove constant velocity joints according to the preamble of claim 1.
- the outer part has a cylindrical shape Inner contour, in which elongated recesses are made. They form Ball raceways for the balls arranged in a cage of the inner part.
- the cylindrical inner contour of the outer joint part naturally has none Undercut on. Nevertheless, there is a separation of the outer part and the inner part of the Constant velocity joint not easily possible, since the ball raceways are not axially parallel and also inclined to each other.
- a method for producing outer joint parts of the type just described is in of patent EP 0 270 538.
- a pre-workpiece has the shape a goblet diverging towards the open end, with the inside of the Ball races are already preformed.
- the required force is exerted by a press ram, which is made of a plurality of mutually movable segments is formed. These point mutually inclined elevations.
- a press ram which is made of a plurality of mutually movable segments is formed.
- the segments pivot in the direction of the central axis of the entire arrangement and thus disengaged with the ball tracks.
- the segments can also be made be removed from the finished workpiece.
- the wobble press die is then set in a wobble movement, wherein it is in several circular revolutions over the surfaces to be deformed Prework is rolled.
- the wobble point of this movement is close below the underside of the pre-workpiece.
- each deformed only a small area of the ball raceways to be deformed. are
- the pre-workpiece reaches the desired deformations, the The wobble process ended and the wobble stamp removed. It is advantageous for this known method that a one-part wobble stamp can be used can, which is cheaper to produce than a multi-part segment stamp and a ensures greater precision in the production of outer joint parts.
- the invention has for its object that for the production of Rzeppa constant velocity joints well-known wobble process with one-piece wobble stamp also to be used for the production of cross groove constant velocity joints.
- the object is achieved with the method specified in claim 1, namely under Application of a wobble stamp with the features according to claim 6.
- the wobble punch according to the invention has - in a perpendicular to its axis directional projection - rectilinear projection edges and is particularly simple and inexpensive to manufacture.
- the outer tool and the one frustoconical Outer contour wobble stamp which on the outside Ball raceways has corresponding surveys and a lower one Diameter than the cylindrical cavity of the drawn-in workpiece, relative to each other in a wobbling circular motion with one above the bottom of the Cavity arranged wobble point, such that the elevations of the Wobble press stamping and molding over the preformed Move ball raceways on the inner wall of the cavity. Then you can the wobble punch axially pulled out of the pre-workpiece and finally that finished outer joint part are ejected from the outer tool.
- the pre-workpiece 1, the upper part 1a at the beginning of the shape of an open end has diverging goblets in a first step, which is shown in FIG is shown in a funnel-shaped opening 2a of the External tool 2 of a wobble press arranged centrally to the machine axis.
- the ball raceways 1c are already preformed on the inner wall of the upper part 1a.
- the preliminary workpiece 1 has one piece in the axial direction extending pin 1b. To stabilize this pin 1b from one in axially displaceable jacket 3 enclosed, on the upper edge of which cup-shaped upper part 1a of the workpiece 1 rests.
- the pin 1b has a toothing, not shown, on its surface have, which engages in a corresponding toothing of the jacket 3.
- the pin 1b seen in cross section has a non-circular shape.
- a wobble punch 4 is then centered on the bottom of the upper part 1a attached to the machine axis.
- This wobble punch 4 is in its lower Area designed in the shape of a truncated cone, with the outside being integral with the Ball raceways 1c corresponding line-like elevations 4a are arranged, which in Longitudinal direction with respect to the truncated cone axis of the wobble punch 4 are inclined.
- the funnel-shaped section 2a of the outer tool 2 is by a cylindrical second section 2b continued, the shape of the outer contour of the finished top part 1a of the outer joint part corresponds.
- the workpiece 1 is down pressed, the cup-shaped upper part 1a from the funnel-shaped section 2a in the cylindrical section 2b of the outer tool 2 is drawn in and the Pin 1b and the jacket 3 surrounding it can be pushed further down.
- the side walls of the upper part 1a so that they are at the end of Retraction run parallel to the machine axis and the inner wall of the
- the cavity of the upper part 1a thus becomes cylindrical, as can be seen in FIG. 2a can be.
- the shape of the wobble punch 4 including its elevations 4a is chosen so that it does not touch the side walls of the upper part 1a. His The arrangement in the pre-workpiece 1 during the drawing is in section in Fig. 2b shown.
- the wobble angle ⁇ i.e. the angle between the machine axis and the axis of the wobble punch 4
- the wobble angle ⁇ is adjustable. If the wobble angle ⁇ is greater than 0 °, the two axes intersect at the wobble point 5, which in the example shown is above the external tool 2 located.
- the wobble die 4 rolls with its outer contour on the cylindrical inner wall of the cavity. He is trained so that the Upper part 1a of the pre-workpiece 1 and the corresponding outside Elevation 4a parallel to the machine axis and to those already erected Side walls of the upper part 1a run.
- the wobble die 4 is turned off pulled out the finished workpiece 1.
- ⁇ is equal to 0 °.
- the design of the Wobble stamp 4 are taken into account that including its outer contour that located on the surface of the frustoconical section line-like elevations 4a, not a larger diameter than the cavity of the may have finished joint outer part.
- the shape of the wobble punch proposed here is particularly noteworthy characterized in that the greatest possible contact between the wobble die and the workpiece is reached, with which a very effective machining of the workpiece is achieved is made possible. Furthermore, a wobble stamp of this shape is not only less expensive and easier, but also with lower fault tolerances than that from the manufacturing process for external parts of a Rzeppa constant velocity joint to produce known segment or spread stamps.
- the outer tool 2 guides with the one inserted therein Workpiece 1 a driven rotational movement around the machine axis.
- the The wobble punch 4 rotates synchronously with the rotational movement of the outer tool 2 around the wobble axis inclined by the wobble angle ⁇ .
- a Translational movement the lifting movement during the forming process corresponds, is also introduced hydraulically by the wobble ram 4. This Translation movement is carried out to the wobble punch 4 to each To hold the time at a suitable height in relation to the workpiece 1.
- the Rotational movement of the wobble punch 4 is not driven, i.e. this turns freely with the workpiece 1 about the wobble axis, one speaks of the Swash press type 1A.
- the rotational movement of the wobble punch 4 additionally driven, this is the name of this type 1B wobble press.
- the type 2 wobble press has a fixed outer tool 2 that neither Can still perform translational or rotational movements.
- the workpiece 1 is during of the entire machining process stationary.
- the wobble punch 4 leads for it a total of three movements, one rotation around the wobble axis, one Wobble around the machine axis, as well as a hydraulically driven Stroke movement in the axial direction.
- Type 3 wobble presses are the most common type of wobble presses.
- the hydraulically driven lifting movement takes place through a cylinder in the lower one Part of the machine.
- the translational movement is thus through the external tool executed.
- the wobble movement is initiated by the wobble die 4, External tool 2 and workpiece 1 remain with respect to the rotational movement stationary.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Joints Allowing Movement (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Moulding By Coating Moulds (AREA)
Description
Claims (6)
- Verfahren zur Herstellung des Außenteils eines Gleichlaufgelenks, wobei das Außenteil im fertigen Zustand einen Hohlraum mit einer zylinderförmigen Innenwandung aufweist, in der schräg zur Zylinderachse verlaufende und gegeneinander geneigte Kugellaufbahnen (1c) vorgesehen sind, mit folgenden Verfahrensschritten:a) in ein kelchförmiges Vorwerkstück (1a) für das Außenteil mit einer konisch verlaufenden Innen- und Außenwandung sowie vorgeformten Kugellaufbahnen (1c) in der Innenwandung wird axial ein Taumelpreßstempel (4) eingeführt,b) das Vorwerkstück (1a) wird mittels des auf den Boden des Hohlraumes aufsitzenden Taumelpreßstempels (4) durch eine Öffnung in einem Außenwerkzeug (2) gedrückt, so dass ein Einziehvorgang ausgeführt wird, bei dem das Vorwerkstück (1a) derart kaltverformt wird, dass die Innenwandung des Hohlraumes eine zylindrische Form bekommt,
gekennzeichnet durch folgende Verfahrensschritte:c) das Außenwerkzeug (2) und der eine kegelstumpfförmige Außenkontur aufweisende Taumelpreßstempel (4), der auf seiner Außenseite den Kugellaufbahnen (1c) entsprechende Erhebungen (4a) aufweist und einen geringeren Durchmesser als der zylindrische Hohlraum des eingezogenen Vorwerkstückes (1a) hat, werden relativ zueinander in eine taumelnde Kreisbewegung mit einem oberhalb des Bodens des Hohlraums angeordneten Taumelpunkt (5) versetzt, derart, dass sich die Erhebungen (4a) des Taumelpreßstempels (4) pressend und materialumformend über die vorgeformten Kugellaufbahnen (1c) an der Innenwandung des Hohlraumes bewegen,d) daraufhin wird der Taumelpreßstempel (4) aus dem Vorwerkstück (1a) axial herausgezogen unde) schließlich wird das fertige Gelenkaußenteil aus dem Außenwerkzeug (2) ausgestoßen. - Verfahren nach Anspruch 1,
dadurch gekennzeichnet, dass in Schritt c) das Außenwerkzeug (2) mit dem darin eingelegten Werkstück (1) eine angetriebene Rotationsbewegung um eine Maschinenachse ausführt und der Taumelpreßstempel (4) sich synchron zur Rotationsbewegung des Außenwerkzeugs (2) um die um einen Taumelwinkel α geneigte Taumelachse mitdreht. - Verfahren nach Anspruch 2,
dadurch gekennzeichnet, dass die Rotationsbewegung des Taumelpreßstempels (4) zusätzlich angetrieben ist. - Verfahren nach Anspruch 1,
dadurch gekennzeichnet, dass in Schritt c) das Außenwerkzeug (2) stationär ist und der Taumelpreßstempel (4) gleichzeitig eine Rotation um die Taumelachse, eine Taumelbewegung um die Maschinenachse und eine Hubbewegung in axialer Richtung ausführt. - Verfahren nach Anspruch 1,
dadurch gekennzeichnet, dass in Schritt c) das Außenwerkzeug (2) eine Hubbewegung in axialer Richtung und der Taumelpreßstempel (4) gleichzeitig eine Rotation um die Taumelachse und eine Taumelbewegung um die Maschinenachse ausführen. - Taumelpreßstempel (4) zur Herstellung des Außenteils für ein Gleichlaufgelenk, welches einen Hohlraum mit einer zylinderförmigen Innenwandung aufweist, in der schräg zur Zylinderachse verlaufende gegeneinander geneigte Kugellaufbahnen (1c) vorgesehen sind,
dadurch gekennzeichnet, dass er eine kegelstumpfförmige Außenkontur mit darauf angeordneten linienartigen Erhebungen (4a) aufweist, die schräg zur Kegelstumpfachse verlaufen und gegeneinander geneigt sind, wobei die kegelstümpfförmige Außenkontur und die darauf angeordneten linienartigen Erhebungen (4a) bezüglich eines Taumelpunktes (5), der sich in einem Abstand vom verdickten Ende der Außenkontur des Taumelpreßstempels (4) auf dessen Mittelachse befindet, derart ausgebildet sind, daß sie beim Abwälzen an der zylinderförmigen Innenwandung des Hohlraumes während des Austaumelns parallel zur zylinderförmigen Innenwandung des Hohlraumes verlaufen.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19915879 | 1999-04-08 | ||
DE19915879A DE19915879A1 (de) | 1999-04-08 | 1999-04-08 | Verfahren zur Herstellung von Gleichlaufgelenken |
PCT/EP2000/001399 WO2000061317A1 (de) | 1999-04-08 | 2000-02-21 | Verfahren zur herstellung von gleichlaufgelenken |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1165272A1 EP1165272A1 (de) | 2002-01-02 |
EP1165272B1 true EP1165272B1 (de) | 2004-05-19 |
Family
ID=7903908
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00912491A Expired - Lifetime EP1165272B1 (de) | 1999-04-08 | 2000-02-21 | Verfahren zur herstellung von gleichlaufgelenken |
Country Status (6)
Country | Link |
---|---|
US (1) | US6516647B1 (de) |
EP (1) | EP1165272B1 (de) |
JP (1) | JP2003527244A (de) |
AT (1) | ATE267063T1 (de) |
DE (2) | DE19915879A1 (de) |
WO (1) | WO2000061317A1 (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19915758A1 (de) * | 1999-04-08 | 2000-10-12 | Hirschvogel Umformtechnik Gmbh | Verfahren zum Herstellen eines Taumelstempels |
JP3940674B2 (ja) * | 2000-10-05 | 2007-07-04 | テスマ インターナショナル インコーポレイテッド | スプライン付き変速機ハブの冷間成形法 |
JP3964137B2 (ja) * | 2001-01-16 | 2007-08-22 | Ntn株式会社 | トリポード型等速自在継手外輪の製造方法 |
US7222426B2 (en) * | 2004-01-12 | 2007-05-29 | Automotive Components Holdings, Llc | Method of forming a constant velocity joint |
US7191626B2 (en) * | 2005-06-07 | 2007-03-20 | Profiroll Technologies Gmbh | Method for producing an inner contour with an internal arbor acting on the inside wall of a workpiece |
DE102013100493B3 (de) * | 2013-01-18 | 2013-12-24 | Harting Electric Gmbh & Co. Kg | Buchsenkontakt |
CN103240383A (zh) * | 2013-05-08 | 2013-08-14 | 丹阳市天合精锻有限公司 | 一种万向节滑叉空心锻造法及专用锻具 |
CN113369330B (zh) * | 2021-06-11 | 2022-07-01 | 中国兵器工业第五九研究所 | 一种筒形构件挤压成形工艺 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56111534A (en) * | 1980-02-07 | 1981-09-03 | Mitsubishi Heavy Ind Ltd | Sizing method of constant-velocity joint ball groove |
ZA837329B (en) * | 1982-10-14 | 1984-05-30 | Pfd Ltd | Tool for and method of making hollow articles |
GB8520641D0 (en) * | 1985-08-17 | 1985-09-25 | Pfd Ltd | Tool |
DE19637839C1 (de) * | 1996-09-17 | 1997-10-30 | Ford Werke Ag | Verfahren zur Herstellung von Gelenkaußenteilen von Gleichlaufgelenken |
US6438844B2 (en) * | 1996-09-17 | 2002-08-27 | Ford Global Tech., Inc. | Method and apparatus for manufacturing constant velocity joints |
JP3770719B2 (ja) * | 1997-12-22 | 2006-04-26 | 本田技研工業株式会社 | 等速ジョイント用外輪部材の鍛造成形方法および装置 |
-
1999
- 1999-04-08 DE DE19915879A patent/DE19915879A1/de not_active Withdrawn
-
2000
- 2000-02-21 AT AT00912491T patent/ATE267063T1/de not_active IP Right Cessation
- 2000-02-21 WO PCT/EP2000/001399 patent/WO2000061317A1/de active IP Right Grant
- 2000-02-21 JP JP2000610638A patent/JP2003527244A/ja active Pending
- 2000-02-21 US US09/958,390 patent/US6516647B1/en not_active Expired - Fee Related
- 2000-02-21 EP EP00912491A patent/EP1165272B1/de not_active Expired - Lifetime
- 2000-02-21 DE DE50006499T patent/DE50006499D1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JP2003527244A (ja) | 2003-09-16 |
US6516647B1 (en) | 2003-02-11 |
DE19915879A1 (de) | 2000-10-12 |
EP1165272A1 (de) | 2002-01-02 |
DE50006499D1 (de) | 2004-06-24 |
ATE267063T1 (de) | 2004-06-15 |
WO2000061317A1 (de) | 2000-10-19 |
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