EP1252947A2 - Verfahren zur Herstellung eines Achselementes für Kraftfahrzeuge - Google Patents
Verfahren zur Herstellung eines Achselementes für Kraftfahrzeuge Download PDFInfo
- Publication number
- EP1252947A2 EP1252947A2 EP02008689A EP02008689A EP1252947A2 EP 1252947 A2 EP1252947 A2 EP 1252947A2 EP 02008689 A EP02008689 A EP 02008689A EP 02008689 A EP02008689 A EP 02008689A EP 1252947 A2 EP1252947 A2 EP 1252947A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- semi
- forging
- finished product
- engraving
- stamp
- 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.)
- Granted
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/08—Upsetting
-
- 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
- B21K1/06—Making machine elements axles or shafts
- B21K1/12—Making machine elements axles or shafts of specially-shaped cross-section
Definitions
- the invention relates to a method for producing an axle element for Motor vehicles.
- Axle elements of motor vehicles in particular swivel bearings for the front axle, are relatively complex cast or forged one-piece designs Components made of cast steel or aluminum getting produced. Considerable forces act on pivot bearings, which is why these components are usually made from a solid material. For reasons the weight savings come increasingly light metals, such as aluminum, for use.
- the object of the invention is to develop a method for Production of an axle element for motor vehicles from a rod-shaped To show semi-finished aluminum, in which the to be fed for forming The amount of energy is reduced and production-related material losses be reduced.
- the solution according to the invention lies in a method for producing a Axle elements for motor vehicles, in which a rod-shaped semi-finished product Aluminum heated to a forming temperature and the first end of the semi-finished product in an engraving of a forming tool upset by a first stamp , then the second end of a second stamp in the engraving is pressed, with the pressed material in a branch of the Engraving is formed into a leg.
- This then includes itself Forging process in which that has already been formed into a pre-forging Semi-finished product is finished.
- the uniform mass distribution of the rod-shaped semifinished product, in particular a round material, with regard to the axis element to be manufactured is changed so that in areas with larger mass accumulations in a preliminary stage of the actual forging process more material is provided than in other areas and thus achieving a mass distribution similar to that of the axis element to be manufactured becomes.
- the forming tool is engraved with a material thickening in discrete areas.
- the first end immediately upset by the stamp. It can but also a recess of the engraving at a distance from the first end of the Semi-finished product can be provided, in which a material accumulation during the upsetting process resulting from pressed material.
- the geometric shape of the engraving is taking into account certain diameter / compression length ratios established. To wrinkles on the surface too should avoid the upsetting length five times the diameter of the semi-finished product do not exceed.
- the first stamp on the semi-finished product is used for upsetting approached and then moves at a speed of up to 150 mm / s to the specified upsetting length.
- a second stamp is effective on the second end of the semi-finished product and press it into the engraving.
- the pressed material flows backwards into a branch of the engraving, the is at an angle to the central longitudinal axis of the rod-shaped semi-finished product.
- the pressed material is shaped into a leg.
- the junction can be formed at half the compression length.
- the engraving is advantageous designed that a neutral fiber in the area of the central longitudinal plane of the molded Leg is formed. This ensures that in the subsequent Finish forging in the die this neutral fiber into the ridge flows and thereby enables a flawlessly directed microstructure in the component becomes.
- the neutral fiber is determined by the parameters Temperature of the forming tool and the semi-finished product, geometry of the Engraving and friction on the surface of the engraving in their recrystallization behavior affected. The optimal choice of these parameters is recrystallization reducible to a minimum.
- the semi-finished product thus formed into a pre-forging is then finished in a forging process.
- the sensible division of forces for Upsetting and backward extrusion are necessary, these operations advantageously be carried out in the horizontal direction.
- the locking force acting on the forming tool is approximately ten times that of the force applied to the first stamp and the second stamp.
- the second end of the semi-finished product pressed into the engraving against the holding force of the first stamp.
- the first end of the preformed semifinished product before Forging process compressed again in a second forming tool.
- This can be particularly advantageous if the first Stamp applied forces to emerge a certain amount allowed to exceed, so that material does not enter the junction of the Engraving flows, but only through the extrusion process through the second Stamp is placed in the branch in a controlled manner.
- a second forming tool thus enables the pre-forging to be contoured even closer to the final shape.
- the pre-forging before the forging process to heat to a forging temperature that is convenient above the recrystallization temperature is heated.
- about 520 ° C is appropriate here (Claim 7).
- Figure 1 shows a rod-shaped semifinished product 1 made of aluminum, specifically an extruded one Round material. This semi-finished product 1 is shown in a not shown Production step heated to a temperature of 450 ° C and then reshaped in two steps.
- the first manufacturing step is an upsetting of the first end 2 of the semi-finished product 1 to a diameter D2, which is compared to the diameter D1 of the Semi-finished product 1 is approximately twice as large.
- the remaining un-compressed Length L2 of the semi-finished product 1 is slightly more than half the initial length L1 of the semi-finished product 1.
- the upsetting of the semi-finished product 1 takes place in a forming tool 3 according to Figure 5.
- the semi-finished product 1 is engraved 4 in the forming tool 3 inserted and enclosed by the forming tool 3.
- a first stamp 5 acts on the first end 2 of the semi-finished product 1 and compresses it accordingly the contouring of the engraving 4 of the forming tool 3.
- the first End 2 undergoes a deformation into a cylindrical end section 6 with the Diameter D2 (see FIG. 2), which has a conical intermediate section 7 the diameter D1 of the semi-finished product 1 is tapered.
- the first stamp 5 serves as a counterhold, during the second stamp 8 presses the second end 9 of the semi-finished product 1 into the engraving 4.
- the compressed material of a branch 10 open at the end Engraving 4 supplied, with a leg 11 at the second end 9 of the semifinished product 1st is formed as it is made on the semi-finished 1 Pre-forging 12 according to Figure 3 can be seen.
- the leg 11 is corresponding the contour of the branch 10 is formed so that the Extrusion results in a favorable fiber orientation in the pre-forging, that is, that the branch 10 or the leg 11 in the transition to the semi-finished product 1 receiving longitudinal engraving is provided with radii, so that a smooth transition results.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Braking Arrangements (AREA)
Abstract
Description
- Figur 1
- ein stabförmiges Halbzeug aus Aluminium;
- Figur 2
- das Halbzeug aus Figur 1 mit einem aufgestauchten ersten Ende;
- Figur 3
- das zu einem Vorschmiedestück umgeformte Halbzeug gemäß Figur 2 mit einem angeformten Schenkel an seinem anderen Ende;
- Figur 4
- ein aus dem Vorschmiedestück gemäß Figur 3 endgeformtes Schwenklager;
- Figur 5
- im Schnitt eine Vorrichtung zur Durchführung des Verfahrens, wobei in einem ersten Verfahrensschritt das erste Ende des Halbzeugs aufgestaucht wird, und
- Figur 6
- die Vorrichtung gemäß Figur 5, wobei der Schenkel ausgeformt wird.
- 1 -
- Halbzeug
- 2 -
- erstes Ende v. 1
- 3 -
- Umformwerkzeug
- 4 -
- Gravur in 3
- 5 -
- erster Stempel
- 6 -
- zylindrischer Endabschnitt v. 2
- 7 -
- konischer Zwischenabschnitt v. 2
- 8 -
- zweiter Stempel
- 9 -
- zweites Ende v. 1
- 10 -
- Abzweigung v. 4
- 11 -
- Schenkel
- 12 -
- Vorschmiedestück
- 13 -
- Schwenklager
- L1 -
- Länge v. 1
- L2 -
- Länge v. 2
- D1 -
- Durchmesser v. 1
- D2 -
- Durchmesser v. 2, 6
Claims (8)
- Verfahren zur Herstellung eines Achselementes für Kraftfahrzeuge, bei welchem ein stabförmiges Halbzeug (1) aus Aluminium auf eine Umformtemperatur erwärmt und das erste Ende (2) des Halbzeugs (1) in einer Gravur (4) eines Umformwerkzeugs (3) von einem ersten Stempel (5) aufgestaucht wird, anschließend das zweite Ende (9) von einem zweiten Stempel (8) in die Gravur (4) gepresst wird, wobei verpresstes Material in eine Abzweigung (10) der Gravur (4) zu einem Schenkel (11) ausgeformt wird und danach das zu einem Vorschmiedestück (12) umgeformte Halbzeug (1) in einem Schmiedevorgang endgeformt wird.
- Verfahren nach Anspruch 1,dadurch gekennzeichnet, dass das zweite Ende (9) des Halbzeugs (1) gegen die Haltekraft des ersten Stempels (5) in die Gravur (4) gepresst wird.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Umformtemperatur niedriger ist als 520 °C.
- Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet,dass die Umformtemperatur zwischen 420 °C und 480 °C liegt.
- Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet,dass das erste Ende (2) des vorgeformten Halbzeugs (1) vor dem Schmiedevorgang in einem zweiten Umformwerkzeug ein weiteres Mal gestaucht wird.
- Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet,dass das Vorschmiedestück (12) vor dem Schmiedevorgang auf eine Schmiedetemperatur erwärmt wird.
- Verfahren nach Anspruch 6, dadurch gekennzeichnet, dass die Schmiedetemperatur etwa 520 °C beträgt.
- Verfahren nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet,dass das Achselement ein Schwenklager (13) ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10119839A DE10119839C2 (de) | 2001-04-23 | 2001-04-23 | Verfahren zur Herstellung eines Achselements für Kraftfahrzeuge |
DE10119839 | 2001-04-23 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1252947A2 true EP1252947A2 (de) | 2002-10-30 |
EP1252947A3 EP1252947A3 (de) | 2003-01-15 |
EP1252947B1 EP1252947B1 (de) | 2008-05-28 |
Family
ID=7682393
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02008689A Expired - Lifetime EP1252947B1 (de) | 2001-04-23 | 2002-04-18 | Verfahren zur Herstellung eines Achselementes für Kraftfahrzeuge |
Country Status (5)
Country | Link |
---|---|
US (1) | US6735996B2 (de) |
EP (1) | EP1252947B1 (de) |
AT (1) | ATE396809T1 (de) |
CZ (1) | CZ301111B6 (de) |
DE (2) | DE10119839C2 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102240688A (zh) * | 2011-05-13 | 2011-11-16 | 北京机电研究所 | 后桥整体车轴快捷挤压成形的方法 |
EP2484462A3 (de) * | 2011-02-04 | 2012-10-24 | SMS Meer GmbH | Verwendung eines Warmstauchverfahrens, Verwendung eines Umformwerkzeugs, Verfahren zum Erzeugen einer Schmiedevorform und Umformvorrichtung oder Warmstauchvorrichtung |
CN113070438A (zh) * | 2021-04-06 | 2021-07-06 | 江阴雷特斯钻具有限公司 | 双臂钻杆内钻杆的加厚模具及加厚方法 |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10303184B3 (de) * | 2003-01-28 | 2004-04-08 | Benteler Automobiltechnik Gmbh | Verfahren und Vorrichtung zur Herstellung von einer in ihrer Dicke mindestens in einem Bereich variierenden Platine |
DE10324244A1 (de) * | 2003-05-28 | 2004-12-30 | Bayerische Motoren Werke Ag | Verfahren zur Herstellung individualisierter Außenhautblechteile aus in Serienfertigung hergestellten Serienaußenhautblechteilen für Fahrzeuge sowie nach diesem Verfahren hergestellte Außenhautblechteile |
US7661282B2 (en) * | 2008-03-21 | 2010-02-16 | Gm Global Technology Operations, Inc. | Hot forming process for metal alloy sheets |
DE112014003932T5 (de) * | 2013-08-29 | 2016-05-12 | Eaton Corporation | Anstauchverfahren von Lagerstiften zum Erhalt von Stiften mit hoher Härte |
GB2522024B (en) * | 2014-01-09 | 2017-05-10 | Rolls Royce Plc | A Forging Apparatus |
WO2016100675A2 (en) | 2014-12-17 | 2016-06-23 | American Axle & Manufacturing, Inc. | Method of manufacturing a tube and a machine for use therein |
JP6537151B1 (ja) | 2018-05-31 | 2019-07-03 | 株式会社関プレス | 突起部形成方法、突起部形成システム、及び突起部を有する金属部品の製造方法 |
CN115415745B (zh) * | 2022-09-09 | 2024-01-26 | 江苏双环齿轮有限公司 | 含孔轴系多台阶类精密模锻件的生产工艺 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1050460A (en) * | 1911-12-20 | 1913-01-14 | Reinhold G Housdorfer | Die for forming axles. |
JPS56119640A (en) * | 1980-02-27 | 1981-09-19 | Diesel Kiki Co Ltd | Method for heating blank material forming plural projections along axial direction of cam shaft or the like |
JPS59166338A (ja) * | 1983-03-10 | 1984-09-19 | Toyota Motor Corp | トリポ−ドの製造方法 |
JPH0663677A (ja) * | 1992-08-11 | 1994-03-08 | Showa Denko Kk | アルミニウム部品の製造方法および装置 |
JPH06292936A (ja) * | 1993-04-12 | 1994-10-21 | Suzuhide Kogyo Kk | ホース用中間金具の成形方法 |
JPH06315734A (ja) * | 1993-05-07 | 1994-11-15 | Japan Steel Works Ltd:The | 鍛造品の製造方法 |
-
2001
- 2001-04-23 DE DE10119839A patent/DE10119839C2/de not_active Expired - Fee Related
-
2002
- 2002-04-18 AT AT02008689T patent/ATE396809T1/de not_active IP Right Cessation
- 2002-04-18 DE DE50212309T patent/DE50212309D1/de not_active Expired - Fee Related
- 2002-04-18 EP EP02008689A patent/EP1252947B1/de not_active Expired - Lifetime
- 2002-04-19 US US10/126,475 patent/US6735996B2/en not_active Expired - Lifetime
- 2002-04-23 CZ CZ20021420A patent/CZ301111B6/cs not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
None |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2484462A3 (de) * | 2011-02-04 | 2012-10-24 | SMS Meer GmbH | Verwendung eines Warmstauchverfahrens, Verwendung eines Umformwerkzeugs, Verfahren zum Erzeugen einer Schmiedevorform und Umformvorrichtung oder Warmstauchvorrichtung |
CN102240688A (zh) * | 2011-05-13 | 2011-11-16 | 北京机电研究所 | 后桥整体车轴快捷挤压成形的方法 |
CN113070438A (zh) * | 2021-04-06 | 2021-07-06 | 江阴雷特斯钻具有限公司 | 双臂钻杆内钻杆的加厚模具及加厚方法 |
Also Published As
Publication number | Publication date |
---|---|
EP1252947B1 (de) | 2008-05-28 |
DE10119839A1 (de) | 2002-10-31 |
US6735996B2 (en) | 2004-05-18 |
EP1252947A3 (de) | 2003-01-15 |
ATE396809T1 (de) | 2008-06-15 |
CZ301111B6 (cs) | 2009-11-11 |
US20020157444A1 (en) | 2002-10-31 |
DE50212309D1 (de) | 2008-07-10 |
DE10119839C2 (de) | 2003-09-11 |
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