EP3504014A1 - 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
EP3504014A1
EP3504014A1 EP17768004.8A EP17768004A EP3504014A1 EP 3504014 A1 EP3504014 A1 EP 3504014A1 EP 17768004 A EP17768004 A EP 17768004A EP 3504014 A1 EP3504014 A1 EP 3504014A1
Authority
EP
European Patent Office
Prior art keywords
sheet metal
shaped
metal blank
pressing
cup
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.)
Pending
Application number
EP17768004.8A
Other languages
German (de)
English (en)
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
Pending legal-status Critical Current

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 chipless production of a rotationally symmetrical body from a sheet metal blank, wherein the sheet metal blank formed by pressing or spinning rollers around an internal mandrel to a cup-shaped body and molded by pressing a central Vorsetzer from the bottom of the cup-shaped body outwardly projecting hub-shaped projection becomes .
  • Such a method is known from EP 0 725 693 B1.
  • This known, long-proven principle method is used to produce a hub having a transmission part.
  • a cup-shaped mold is first produced from a sheet metal blank by pressing around an internal mandrel.
  • the outer bent edge region of the sheet metal blank is held circumferentially by a clamping tool on the tool, ie. the edge region of the sheet metal blank is fixed, so that emigration during the subsequent pressing process is prevented.
  • the thus held in the edge region cup-shaped mold is deformed by pressing a central tool pin to a protruding from the sheet metal cam projection and then the cylindrical projection is opened to receive a coaxial shaft.
  • the object of the invention is to improve the known method, in particular to simplify the production and to ensure proper concentricity of the forming areas.
  • the method is thus carried out only in a single clamping and the sheet metal blank is held or clamped only in its radial inner region, a circumferential clamping tool and a clamping of the outer edge region is completely eliminated.
  • the process is thereby considerably simplified, also an unwanted deformation of the already formed peripheral edge is excluded. It is essential here that, starting from the sheet metal blank, not first the hub and then the cup-shaped region are formed, because otherwise, as has been found, material breaks in the hub region. Since the clamping of the sheet metal blank takes place only in the radial inner region and the blank is deformed exclusively by pressing or flow-forming, a perfect concentricity of all forming areas is guaranteed.
  • the method is therefore also suitable for the production of components where it depends on an exact concentricity, z. B. for the production of housings for pressure accumulator. Also, a machining post-processing of the component is not required. It is envisaged that the sheet metal blank is held during pressing to the central presetter only by the central presetter and the inner mandrel. In the hub forming the sheet metal blank is thus held only radially within the hub to be generated.
  • the central presetter it may also be sufficient for pressing or spinning through the inner mandrel to form the cup-shaped body that the circular sheet is held only by the central presetter and the inner mandrel.
  • the sheet metal blank is held during forming around the inner mandrel of a surrounding the central Vorsetzer outer Vorsetzer, wherein when using such an annular outer Vorsetzers the central Vorsetzer can be moved axially from the contact position on the Blechronde.
  • the sheet metal blank is first formed into a cup-shaped preform in a first pressing operation.
  • the pot-shaped preform is shaped by spin forming into a cup-shaped end shape and then the hub-shaped projection is formed.
  • cup-shaped preform of the hub-shaped projection formed by pressing it can be preferably provided that after formation of the cup-shaped preform of the hub-shaped projection formed by pressing and then the cup-shaped preform is converted by flow forming to a cup-shaped final shape.
  • the process can basically be carried out with a flat sheet metal blank.
  • the sheet metal blank is provided with a bevelled peripheral edge prior to pressing the cup-shaped preform. This can be z. B. done by deep drawing or other suitable forming process.
  • the sheet metal blank is provided with a central bore prior to pressing the cup-shaped preform.
  • the sheet metal blank is preheated before and / or during pressing or flow-forming, e.g. by induction.
  • the pot-shaped end shape can be cylindrical or cone-shaped.
  • a central presetter with a surface profiling is used.
  • the inner portion of the pushed hub may then have different geometric shapes, for. B. as hexagon socket, Torx profile or the like. This can be realized in a simple manner by appropriate surface profiling of the central presetter.
  • Fig. 3 shows the deformation of the sheet metal blank to a cup-shaped final shape by flow-forming and Fig. 4, the Anformung a hub-shaped projection by pressing.
  • a generally designated 1 pressing / forming device is shown in the drawings only with elements essential to the invention.
  • the pressing / forming device 1 is designed rotationally symmetrical to a longitudinal axis A and has a substantially cylindrical inner mandrel 2.
  • a presetter is arranged, which is formed in two parts in the embodiment, namely a central presetter 3 and a surrounding the central presetter 3 outer annular presetter 4. Both the central presetter 3 and the outer presetter 4 are designed to be movable on both sides in the axial direction.
  • the pressing / forming device 1 has pressure rollers 5, 6 and 7, wherein distributed over the circumference and a plurality of pressure rollers 5, 6, 7 may be provided.
  • the spinning rollers 5, 6, 7 are rotatably arranged relative to the presetting 3 and 4 and the inner mandrel 2 in the circumferential direction relatively, wherein the angular position and the geometric shape of the respective pressure roller 5, 6, 7 are adapted to the respective desired pressure rolling process, d .h. the desired shape and dimension of the rotationally symmetrical body to be produced.
  • a sheet metal blank 8 according to FIG. 1 is clamped between the outer prefuser 4 and the end face 2a of the inner mandrel 2, by pressing the outer prefuser 4 in the axial direction against the sheet metal blank 8 and thus the inner mandrel 2.
  • the spinning roller 5 or a plurality of spinning rollers 5) relative to the circular sheet 8 and thus the Vorsetzer 4 and the inner mandrel 2 is set in rotational motion, at the same time the spinning roller 8 is moved in the direction of arrow 9.
  • a cup-shaped preform 10 is formed from the sheet metal blank 8, which has an axially extending region 10a on the outer circumference.
  • the circular sheet-metal 8 is recognizable only in its radial inner area between the inner mandrel 2 and the outer Vorsetzer 4 held or inserted stressed.
  • cup-shaped preform 10 is formed into a cup-shaped end 11 by the spinning rollers 6 axially in the direction of arrow 12 with simultaneous relative rotational movement relative to the outer Vorsetzer 4 and the inner mandrel. 2 be moved, this cup-shaped final shape 11 has a substantially longer axially extending peripheral portion I Ib as the cup-shaped preform 10.
  • the central presetter 3 is moved axially in the direction of the arrow 13 to the inner mandrel 2 and clamps the cup-shaped end mold 11 in its radial inner region against the inner mandrel 2 a.
  • the outer presetter in the direction of arrow 13 is moved axially outward, and indeed so far that one or more spinning rollers 7 can be moved radially inwardly in the direction of arrow 14.
  • a hub-shaped projection 15 is integrally formed on the thus completed rotationally symmetrical body 16 to the central presetter 12.
  • the sheet metal blank 8 and the resulting cup-shaped preform 10 the cup-shaped final shape 11 and the final product, namely the rotationally symmetric body 16 only in the radial inner region between the inner mandrel 2 and the central presetter 3 and the outer presetter held.
  • the process flow may also be modified to the effect that the sequence of FIGS. 3 and 4 is reversed, ie. the formation of the cup-shaped preform 10, the hub-shaped projection 15 is formed in the context of Figure 4 and then in the context of Figure 3, the cup-shaped final form 11th
  • a flat sheet metal blank 8 can be used as a starting material for the process also a sheet metal blank, the beveled Peripheral edge is provided. Furthermore, before pressing the cup-shaped preform, the sheet metal blank also be provided with a central bore.
  • 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)

Abstract

L'invention concerne un procédé pour produire un corps (17) à symétrie de rotation sans enlèvement de copeaux à partir d'un flan de tôle, ce flan de tôle (8) étant façonné par repoussage ou repoussage au tour, autour d'un mandrin interne (2) de manière à obtenir un corps en forme de pot (10), une partie saillante (16) en forme de moyeu faisant saillie vers l'extérieur à partir du fond dudit corps en forme de pot (10) étant formée par repoussage autour d'une saillie (3) centrale. L'objectif de cette invention est d'améliorer ce procédé, en particulier de simplifier le processus de production et de garantir une concentricité parfaite des zone de façonnage. A cet effet, le flan de tôle (8) est serré en direction axiale pendant la totalité du processus de façonnage, uniquement au niveau de sa zone interne radiale, entre le mandrin interne (2) et au moins une saillie (3).
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 Pending EP3504014A1 (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 (1)

Publication Number Publication Date
EP3504014A1 true EP3504014A1 (fr) 2019-07-03

Family

ID=59887191

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17768004.8A Pending EP3504014A1 (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) EP3504014A1 (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

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4470281A (en) * 1980-06-26 1984-09-11 Kramotorsky Industrialny Institut Method of forming end face wall having concentric recess in 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
US5619879A (en) * 1993-12-09 1997-04-15 Wf-Maschinenbau Und Blechformtechnik Gmbh & Co. Kg Method for the non-cutting production of a hub of a transmission component possessing the hub
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
DE19960582A1 (de) 1999-12-15 2000-08-03 Leico Werkzeugmaschb Gmbh & Co Verfahren und Vorrichtung zum Drückwalzen
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
PL2210682T3 (pl) * 2009-07-09 2012-07-31 Leifeld Metal Spinning Ag Sposób wyoblania z walcowaniem oraz urządzenia do wyoblania z walcowaniem półwyrobu w kształcie rury
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

Also Published As

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

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