EP1389501A1 - Flexibeles Verfahren zur Herstellung von Leichtmetallrädern und Maschine dafür - Google Patents

Flexibeles Verfahren zur Herstellung von Leichtmetallrädern und Maschine dafür Download PDF

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Publication number
EP1389501A1
EP1389501A1 EP02078368A EP02078368A EP1389501A1 EP 1389501 A1 EP1389501 A1 EP 1389501A1 EP 02078368 A EP02078368 A EP 02078368A EP 02078368 A EP02078368 A EP 02078368A EP 1389501 A1 EP1389501 A1 EP 1389501A1
Authority
EP
European Patent Office
Prior art keywords
preform
equipment
wheel
rollers
light alloy
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.)
Withdrawn
Application number
EP02078368A
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English (en)
French (fr)
Inventor
Giorgio Mufatto
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.)
Speedline Srl
Original Assignee
Speedline Srl
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 Speedline Srl filed Critical Speedline Srl
Priority to EP02078368A priority Critical patent/EP1389501A1/de
Publication of EP1389501A1 publication Critical patent/EP1389501A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H1/00—Making articles shaped as bodies of revolution
    • B21H1/06—Making articles shaped as bodies of revolution rings of restricted axial length
    • B21H1/10—Making articles shaped as bodies of revolution rings of restricted axial length rims for pneumatic tyres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/14—Spinning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/26—Making other particular articles wheels or the like
    • B21D53/30—Making other particular articles wheels or the like wheel rims

Definitions

  • the present invention refers to a flexible procedure for flow forming light alloy wheels and the relative machine.
  • a special casting machine essentially consisting of a whole set of equipment which cooperates with a tailstock and rollers of a different size which act upon the material being treated according to a logic programmed by an electronic control which correlates its movement and operations.
  • a machine is foreseen upon which a whole set of metallic equipment is arranged which reproduces the inside of the end shape of the piece.
  • This set of equipment comprises, as well as an outer part, which cooperates with a tailstock, which reproduces the inner shape of the end wheel, an arrangement of parts inside the equipment to heat and gear a piece to be worked, known as a "preform", for example made of light alloy, which is being treated in the equipment.
  • the wheel to be worked is initially obtained by fusion making a sketch of the channel shape. Then this sketch is heated up to approximately 400°C and is placed in said equipment.
  • the tailstock of the machine blocks this piece against the outer surface of the aforementioned equipment.
  • the equipment and the tailstock are made to rotate and three rollers, generally of a different shape, intervene on the outer part of the preform.
  • the equipment is also usually heated electrically up to 240°C, to keep the temperature of the piece constant, initially around 400°C, and to guarantee a reliable process and constant sizes of the wheel being cast.
  • the main purpose of the present invention is that of defining a flexible procedure for flow forming light alloy wheels and a relative machine which offer a valid solution to the technical problem quoted above, avoiding the involvement of complex machines which are not fast nor easy to actuate.
  • Another purpose is that of realising a procedure and a machine suitable for carrying out the previously outlined task which is particularly simple to actuate, also in the presence of various types of wheel which one wishes to obtain.
  • Another purpose is that of realising a procedure and a machine in which it is not necessary to have machine groups available which are so complex like those which are known and used up to now.
  • Yet another further purpose of the present invention is that of realising a procedure and a machine which allow wheels with a negative draft angle to be obtained.
  • the production process is made flexible and the equipment cost and the set-up times thereof are reduced.
  • Such a machine comprises simple equipment 11, equipped with three roller profiles 12, of the standard cone type, in cooperation with which is foreseen a mobile centring device 13 and a blocker 14, in sections, for a preform 15 to be shaped.
  • Such equipment 11 works in cooperation with at least three casting rollers 16, only one of which is illustrated in figure 1, which realise the flow forming procedure.
  • the preform 15 has been heated to a temperature of 400°C, it is mounted onto this equipment 11 which is equipped with the centring device 13 and the blocker 14.
  • the mobile centring device 13 compensates the possible temperature differences and thus the expansion differences.
  • three casting rollers 16 are used which are made to engage on the preform 15 according to the radial directions of the arrow 18, thanks to the fact that they can be displaced radially towards a central rotational axis 22 of the equipment 11.
  • three profile rollers 12 are foreseen in the equipment 11 which rotate idly on three shafts (not shown) arranged on a structure 19 of the equipment itself.
  • wheels 20 with a different diameter can be made by increasing or decreasing the radial work position both of the profile rollers 12 and of the casting rollers 16.
  • Figure 3 shows how it is possible to realise wheels 120 with shaped profiles with negative draft angles 21.
  • the same reference numerals are used for identical or corresponding elements.
  • the three profile rollers 12, or rather the three inner shapes can be made to translate according to the arrow 17 towards the centre, thus allowing the disengagement and the extraction of the finished piece 120.
  • the radial movement of the three profile rollers 12 allows the casting of profiles with a negative draft angle 21, since, after casting, it is possible to retract the rollers 12 towards the centre, not shown.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
EP02078368A 2002-08-15 2002-08-15 Flexibeles Verfahren zur Herstellung von Leichtmetallrädern und Maschine dafür Withdrawn EP1389501A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP02078368A EP1389501A1 (de) 2002-08-15 2002-08-15 Flexibeles Verfahren zur Herstellung von Leichtmetallrädern und Maschine dafür

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02078368A EP1389501A1 (de) 2002-08-15 2002-08-15 Flexibeles Verfahren zur Herstellung von Leichtmetallrädern und Maschine dafür

Publications (1)

Publication Number Publication Date
EP1389501A1 true EP1389501A1 (de) 2004-02-18

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP02078368A Withdrawn EP1389501A1 (de) 2002-08-15 2002-08-15 Flexibeles Verfahren zur Herstellung von Leichtmetallrädern und Maschine dafür

Country Status (1)

Country Link
EP (1) EP1389501A1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005025337A1 (de) * 2005-01-21 2006-07-27 Alutec-Belte Ag Verfahren zum Herstellen eines rotationssymmetrischen Körpers sowie Erwärmungsvorrichtung hierfür
US8042370B2 (en) 2006-02-07 2011-10-25 Ronjo, Llc Flow formed gear
EP2821158A1 (de) 2013-07-04 2015-01-07 Hayes Lemmerz Manresa, S.L.U. Herstellungsverfahren von Radfelgen und Ausrüstung zu dessen Durchführung
JP6216894B1 (ja) * 2016-05-20 2017-10-18 株式会社ジャムコ 円筒部材の成形装置
WO2018228989A1 (de) * 2017-06-12 2018-12-20 Wf-Maschinenbau Und Blechformtechnik Gmbh & Co. Kg Verfahren zur herstellung eines rotationssymmetrischen formkörpers sowie vorrichtung zur durchführung des verfahrens
EP3351313B1 (de) 2017-01-18 2020-04-15 Leifeld Metal Spinning AG Verfahren und vorrichtung zum drückwalzen

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3019723A1 (de) * 1980-05-23 1981-12-03 Hans J. Ing.(grad.) 7336 Uhingen Wissner Maschinenanlage zum herstellen von kfz-raedern
DE4442465A1 (de) * 1994-11-25 1996-05-30 Asahi Tec Corp Verfahren zum Herstellen eines Fahrzeugrades im Fließdrückverfahren
DE19545177A1 (de) * 1995-12-04 1996-08-08 Leifeld Gmbh & Co Verfahren zum Drückwalzen eines Werkstücks

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3019723A1 (de) * 1980-05-23 1981-12-03 Hans J. Ing.(grad.) 7336 Uhingen Wissner Maschinenanlage zum herstellen von kfz-raedern
DE4442465A1 (de) * 1994-11-25 1996-05-30 Asahi Tec Corp Verfahren zum Herstellen eines Fahrzeugrades im Fließdrückverfahren
DE19545177A1 (de) * 1995-12-04 1996-08-08 Leifeld Gmbh & Co Verfahren zum Drückwalzen eines Werkstücks

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005025337A1 (de) * 2005-01-21 2006-07-27 Alutec-Belte Ag Verfahren zum Herstellen eines rotationssymmetrischen Körpers sowie Erwärmungsvorrichtung hierfür
US8042370B2 (en) 2006-02-07 2011-10-25 Ronjo, Llc Flow formed gear
EP2821158A1 (de) 2013-07-04 2015-01-07 Hayes Lemmerz Manresa, S.L.U. Herstellungsverfahren von Radfelgen und Ausrüstung zu dessen Durchführung
JP6216894B1 (ja) * 2016-05-20 2017-10-18 株式会社ジャムコ 円筒部材の成形装置
WO2017199425A1 (ja) * 2016-05-20 2017-11-23 株式会社ジャムコ 円筒部材の成形方法及び成形装置
EP3351313B1 (de) 2017-01-18 2020-04-15 Leifeld Metal Spinning AG Verfahren und vorrichtung zum drückwalzen
US11565300B2 (en) * 2017-01-18 2023-01-31 Leifeld Metal Spinning Ag Method and device for spin forming
WO2018228989A1 (de) * 2017-06-12 2018-12-20 Wf-Maschinenbau Und Blechformtechnik Gmbh & Co. Kg Verfahren zur herstellung eines rotationssymmetrischen formkörpers sowie vorrichtung zur durchführung des verfahrens

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