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EP3504014B1 - Procédé pour produire un corps à symétrie de rotation sans enlèvement de copeaux à partir d'un flan de tôle - Google Patents

Procédé pour produire un corps à symétrie de rotation sans enlèvement de copeaux à partir d'un flan de tôle

Info

Publication number
EP3504014B1
EP3504014B1 EP17768004.8A EP17768004A EP3504014B1 EP 3504014 B1 EP3504014 B1 EP 3504014B1 EP 17768004 A EP17768004 A EP 17768004A EP 3504014 B1 EP3504014 B1 EP 3504014B1
Authority
EP
European Patent Office
Prior art keywords
sheet metal
metal blank
shaped
setter
pot
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.)
Active
Application number
EP17768004.8A
Other languages
German (de)
English (en)
Other versions
EP3504014C0 (fr
EP3504014A1 (fr
Inventor
Heiko Ohlscher
Christian Malkemper
Bernd RUDERT
Karl-Heinz Hecker
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.)
WF Maschinenbau und Blechformtecknik GmbH and Co KG
Winkelmann Powertrain Components GmbH and Co KG
Original Assignee
WF Maschinenbau und Blechformtecknik GmbH and Co KG
Winkelmann Powertrain Components GmbH and Co 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 WF Maschinenbau und Blechformtecknik GmbH and Co KG, Winkelmann Powertrain Components GmbH and Co KG filed Critical WF Maschinenbau und Blechformtecknik GmbH and Co KG
Publication of EP3504014A1 publication Critical patent/EP3504014A1/fr
Application granted granted Critical
Publication of EP3504014C0 publication Critical patent/EP3504014C0/fr
Publication of EP3504014B1 publication Critical patent/EP3504014B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • B21D22/16—Spinning over shaping mandrels or formers
    • 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
    • B21D51/00—Making hollow objects
    • B21D51/02—Making hollow objects characterised by the structure of the objects
    • B21D51/04—Making hollow objects characterised by the structure of the objects built-up objects, e.g. objects with rigidly-attached bottom or cover

Definitions

  • the invention relates to a method for the non-cutting production of a rotationally symmetrical body from a sheet metal blank, wherein the sheet metal blank is formed into a cup-shaped body by pressing or flow-forming around an inner mandrel and a hub-shaped projection projecting outwards from the bottom of the cup-shaped body is formed by pressing around a central insert.
  • EP 1 108 483 A2 discloses a method for producing a pot-like structure in which a hub is produced prior to the production of the pot-like shape.
  • the object of the invention is to improve the known method, in particular to simplify production and to ensure perfect concentricity of the forming areas.
  • the sheet metal blank is clamped in the axial direction only in its radial inner region between the inner mandrel and at least one pre-setter during the entire forming process, wherein the sheet metal blank is first held between an outer pre-setter surrounding the central pre-setter and the inner mandrel and in a first pressing process the sheet metal blank is formed into a cup-shaped preform, wherein subsequently, in order to form the hub-shaped projection, the central pre-setter is moved axially towards the inner mandrel in order to clamp the sheet metal blank in its radial inner region against the inner mandrel, and subsequently the outer pre-setter is moved axially outwards away from the inner mandrel and then the hub-shaped projection is formed around the central pre-setter.
  • the process is thus carried out in a single setup, and the sheet metal blank is held or clamped only in its radial inner region; a rotating clamping tool and clamping of the outer edge region are completely eliminated.
  • the hub is not formed first and then the cup-shaped region, because otherwise, as has been shown, material in the hub area will crack. Since the sheet metal blank is clamped only in its radial inner region and the sheet metal blank is formed exclusively by spinning or flow-forming, perfect concentricity of all forming areas is guaranteed.
  • the process is therefore also suitable for the production of components where exact concentricity is important, e.g., for the production of housings for pressure accumulators. Machining of the component is also not required.
  • the cup-shaped preform is first formed into a cup-shaped final shape by pressure rolling and then the hub-shaped projection is formed.
  • the process can generally be carried out using a flat sheet metal blank.
  • the sheet metal blank to be provided with a beveled peripheral edge before the cup-shaped preform is pressed. This can be achieved, for example, by deep drawing or another suitable forming process.
  • the cup-shaped end shape can be cylindrical or conical.
  • a spinning/forming device generally designated 1, is shown in the drawings only with elements essential to the invention.
  • the spinning/forming device 1 is designed rotationally symmetrically to a longitudinal axis A and has a substantially cylindrical inner mandrel 2.
  • a pre-setter is arranged opposite the front end 2a of the inner mandrel 2.
  • this pre-setter is constructed in two parts, namely a central pre-setter 3 and an outer annular pre-setter 4 surrounding the central pre-setter 3. Both the central pre-setter 3 and the outer pre-setter 4 are designed to be movable in both directions in the axial direction.
  • the spinning/forming device 1 has spinning rollers 5, 6, and 7, whereby a plurality of spinning rollers 5, 6, 7 can also be provided distributed around the circumference.
  • the spinning rollers 5, 6, 7 are arranged in a known manner so as to be relatively rotatable in the circumferential direction relative to the pre-setters 3 and 4 and the inner mandrel 2, whereby the angular position and the geometric shape of the respective spinning roller 5, 6, 7 are adapted to the respective desired pressure-rolling process, i.e., the desired shape and dimensions of the rotationally symmetrical body to be produced.
  • the cup-shaped preform 10 is formed into a cup-shaped final shape 11 using a second spinning roller 6 (or several spinning rollers 6), in that the spinning rollers 6 are moved axially in the direction of the arrow 12 with simultaneous relative rotational movement with respect to the outer pre-setter 4 and the inner mandrel 2; this cup-shaped final shape 11 has a significantly longer axially extended circumferential region 11b than the cup-shaped preform 10.
  • the central pre-setter 3 is moved axially in the direction of arrow 13 toward the inner mandrel 2 and clamps the cup-shaped final shape 11 in its radial inner region against the inner mandrel 2.
  • the outer pre-setter 4 is moved axially outward in the direction of arrow 14, to such an extent that one or more spinning rollers 7 can be moved radially inward in the direction of arrow 14.
  • a hub-shaped projection 16 is formed around the central pre-setter 3 onto the thus completed rotationally symmetrical body 16.
  • the sheet metal blank 8 or the resulting cup-shaped preform 10 the cup-shaped final shape 11 and the final product, namely the rotationally symmetrical body 17, are held only in the radial inner area between the inner mandrel 2 and the central pre-setter 3 or the outer pre-setter 4.
  • the procedure can also be modified so that the sequence of Figures 3 and 4 is reversed, ie after formation of the cup-shaped preform 10, in the sense of Figure 4 the hub-shaped projection 15 is formed and then in the sense of Figure 3 the cup-shaped final shape 11 is produced.
  • a sheet metal blank with a bevelled peripheral edge can also be used as the starting product for the process. Furthermore, before pressing the cup-shaped Preform the sheet metal blank 8 can also be provided with a central hole.
  • the sheet metal blank 8 is preheated before and/or during pressing or flow-forming.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Forging (AREA)

Claims (8)

  1. Procédé de fabrication sans enlèvement de copeaux d'un corps (17) à symétrie de révolution à partir d'un flan de tôle (8), dans lequel le flan de tôle (8) est façonné en un corps en forme de pot par pressage ou fluotournage autour d'un mandrin intérieur (2) et une saillie (16) en forme de moyeu faisant saillie vers l'extérieur du fond du corps en forme de pot est formée par pression autour d'un préformeur central (3),
    caractérisé en ce que
    le flan de tôle (8) est serré en direction axiale, pendant l'ensemble de l'opération de façonnage, uniquement dans sa zone intérieure radiale entre le mandrin intérieur (2) et au moins un préformeur (3, 4), dans lequel le flan de tôle (8) est d'abord maintenu entre un préformeur extérieur (4) entourant le préformeur central (3) et le mandrin intérieur (2), et le flan de tôle (8) est façonné en une préforme (10) en forme de pot lors d'une première opération de pressage, puis dans lequel pour former la saillie en forme de moyeu (16), le préformeur central (3) est déplacé axialement en direction du mandrin intérieur (2) pour coincer le flan de tôle (8) dans sa zone intérieure radiale contre le mandrin intérieur (2), et puis le préformeur extérieur (4) est déplacé axialement vers l'extérieur à l'écart du mandrin intérieur (2) et ensuite la saillie (16) en forme de moyeu est façonnée autour du préformeur central (3).
  2. Procédé selon la revendication 1,
    caractérisé en ce que
    la préforme (10) en forme de pot est d'abord façonnée en une forme finale (11) en forme de pot et la saillie (16) en forme de moyeu est ensuite formée.
  3. Procédé selon la revendication 1,
    caractérisé en ce que
    la préforme (10) en forme de pot est ensuite façonnée en une forme finale (11) en forme de pot.
  4. Procédé selon l'une quelconque des revendications 1 à 3,
    caractérisé en ce que
    avant de presser la préforme (10) en forme de pot, le flan de tôle (8) est doté d'un bord périphérique biseauté.
  5. Procédé selon l'une quelconque des revendications 1 à 4,
    caractérisé en ce que
    avant de presser la préforme (10) en forme de pot, le flan de tôle (8) est doté d'un alésage central.
  6. Procédé selon l'une quelconque des revendications 1 à 5,
    caractérisé en ce que
    le flan de tôle (8) est préchauffé avant et/ou lors du pressage ou du fluotournage.
  7. Procédé selon l'une quelconque des revendications 1 à 6,
    caractérisé en ce que
    un mandrin intérieur (2) avec des rainures longitudinales est utilisé.
  8. Procédé selon l'une quelconque des revendications 1 à 7,
    caractérisé en ce que
    un préformeur central (3) avec un profilage de surface est utilisé.
EP17768004.8A 2016-08-25 2017-08-24 Procédé pour produire un corps à symétrie de rotation sans enlèvement de copeaux à partir d'un flan de tôle Active EP3504014B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016115791.0A DE102016115791A1 (de) 2016-08-25 2016-08-25 Verfahren zur spanlosen Herstellung eines rotationssymmetrischen Körpers aus einer Blechronde
PCT/EP2017/071312 WO2018037070A1 (fr) 2016-08-25 2017-08-24 Procédé pour produire un corps à symétrie de rotation sans enlèvement de copeaux à partir d'un flan de tôle

Publications (3)

Publication Number Publication Date
EP3504014A1 EP3504014A1 (fr) 2019-07-03
EP3504014C0 EP3504014C0 (fr) 2025-08-13
EP3504014B1 true EP3504014B1 (fr) 2025-08-13

Family

ID=59887191

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17768004.8A Active EP3504014B1 (fr) 2016-08-25 2017-08-24 Procédé pour produire un corps à symétrie de rotation sans enlèvement de copeaux à partir d'un flan de tôle

Country Status (8)

Country Link
US (1) US11325174B2 (fr)
EP (1) EP3504014B1 (fr)
KR (1) KR102343153B1 (fr)
CN (1) CN109641255B (fr)
CA (1) CA3033691C (fr)
DE (1) DE102016115791A1 (fr)
MX (1) MX2019002150A (fr)
WO (1) WO2018037070A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111604431B (zh) * 2020-06-09 2020-12-22 泰州市铭方机械有限公司 一种自动金属旋压设备

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0725893B1 (fr) * 1993-10-28 2000-01-26 Robert Bosch Gmbh Procede de commande de la temperature des gaz d'echappement d'un moteur a combustion interne a regulation du cliquetis
EP1108483A2 (fr) * 1999-12-15 2001-06-20 Leico GmbH & Co. Werkzeugmaschinenbau Procédé et dispositif pour le fluotournage

Family Cites Families (16)

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DE3050452A1 (en) * 1980-06-26 1982-08-12 V Chemeris Method of obtaining butt-end wall with concentric recess in a tubular workpiece
JPS5775225A (en) * 1980-10-29 1982-05-11 Matsushita Electric Works Ltd Spinning machine
FR2559078B1 (fr) * 1984-02-02 1988-03-25 Vallourec Procede de realisation d'une collerette annulaire sur le fond d'un recipient de revolution
JPH01228615A (ja) * 1988-03-09 1989-09-12 Mazda Motor Corp スピニング成形装置
US5428980A (en) * 1991-08-26 1995-07-04 Iidaka; Tsuguo Method and apparatus for producing cap for drink bottle
CA2161020C (fr) 1993-12-09 2000-10-31 Udo Friese Methode sans coupage pour l'obtention d'un moyen de transmission
DE19603773A1 (de) 1996-02-02 1996-08-08 Leifeld Gmbh & Co Verfahren zum Herstellen rotationssymmetrischer Körper mit Nabe
DE19620812B4 (de) * 1996-05-23 2005-07-28 Leifeld Metal Spinning Gmbh Verfahren zum Herstellen eines rotationssymmetrischen Körpers
DE19701565C2 (de) 1997-01-17 2003-09-18 Leico Werkzeugmaschb Gmbh & Co Verfahren zur Herstellung eines Getriebeteils
DE19703947C2 (de) 1997-02-03 2002-12-12 Leico Werkzeugmaschb Gmbh & Co Verfahren und Vorrichtung zur Herstellung eines rotationssymmetrischen Körpers
NL1013906C2 (nl) * 1999-12-21 2001-06-25 Johan Massue Forceermachine, werkwijze voor het forceren van een product en uitlaatsysteem of poelie omvattende een dergelijk product.
DE102006039656B4 (de) 2006-08-24 2008-12-18 Leifeld Metal Spinning Gmbh Vorrichtung und Verfahren zum Herstellen eines Hohlkörpers aus einem rondenförmigen Werkstück
EP2210682B1 (fr) * 2009-07-09 2012-03-14 Leifeld Metal Spinning AG Méthode et appareil de fluotournage
CN101966555A (zh) * 2009-07-28 2011-02-09 上海兴浦旋压车轮有限公司 一种车轮辗压成型方法
CN103624129A (zh) * 2012-08-23 2014-03-12 中国航天科技集团公司长征机械厂 带内外齿壳体零件的旋压成形新工艺
JP6085945B2 (ja) * 2012-10-29 2017-03-01 コニカミノルタ株式会社 電源装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0725893B1 (fr) * 1993-10-28 2000-01-26 Robert Bosch Gmbh Procede de commande de la temperature des gaz d'echappement d'un moteur a combustion interne a regulation du cliquetis
EP1108483A2 (fr) * 1999-12-15 2001-06-20 Leico GmbH & Co. Werkzeugmaschinenbau Procédé et dispositif pour le fluotournage

Also Published As

Publication number Publication date
EP3504014C0 (fr) 2025-08-13
CN109641255B (zh) 2021-09-14
WO2018037070A1 (fr) 2018-03-01
US20210276066A1 (en) 2021-09-09
CA3033691C (fr) 2024-06-11
KR102343153B1 (ko) 2021-12-23
DE102016115791A1 (de) 2018-03-01
KR20190039738A (ko) 2019-04-15
CA3033691A1 (fr) 2018-03-01
CN109641255A (zh) 2019-04-16
US11325174B2 (en) 2022-05-10
MX2019002150A (es) 2019-09-18
EP3504014A1 (fr) 2019-07-03

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