EP0457358A2 - Procédé et dispositif de fluotournage - Google Patents

Procédé et dispositif de fluotournage Download PDF

Info

Publication number
EP0457358A2
EP0457358A2 EP91108102A EP91108102A EP0457358A2 EP 0457358 A2 EP0457358 A2 EP 0457358A2 EP 91108102 A EP91108102 A EP 91108102A EP 91108102 A EP91108102 A EP 91108102A EP 0457358 A2 EP0457358 A2 EP 0457358A2
Authority
EP
European Patent Office
Prior art keywords
blank
pressing
molded part
working temperature
temperature
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
Application number
EP91108102A
Other languages
German (de)
English (en)
Other versions
EP0457358A3 (en
EP0457358B1 (fr
Inventor
Erich Sieger
Detlef Dr. Müller-Wiesner
Michael Schnellbügel
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.)
Zeppelin Metallwerke GmbH
Original Assignee
Zeppelin Metallwerke GmbH
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 Zeppelin Metallwerke GmbH filed Critical Zeppelin Metallwerke GmbH
Publication of EP0457358A2 publication Critical patent/EP0457358A2/fr
Publication of EP0457358A3 publication Critical patent/EP0457358A3/de
Application granted granted Critical
Publication of EP0457358B1 publication Critical patent/EP0457358B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B21D22/18—Spinning using tools guided to produce the required profile
    • B21D22/185—Spinning using tools guided to produce the required profile making domed objects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/004—Heating the product

Definitions

  • the invention relates to a method and an apparatus for metal pressing a blank into a curved molded part, in particular a container bottom.
  • a blank in the form of a sheet metal blank or preform is set in rotation and brought into the desired, rotationally symmetrical shaped part by means of an advanced and advanced pushing tool.
  • An overview of known spinning methods can be found in BLECH-ROHRE-PROFILE 28 (1981) 11, pages 514 to 517.
  • the blank is clamped in the middle of a chuck, the outer contour of which corresponds to the inner contour of the desired molded part.
  • the spinning tool in the form of a spinning roller follows the outer contour of the desired molded part, so that the blank can be formed between the spinning roller and the spinning chuck. It is also known to press into an inner pressure chuck, the inner contour of which corresponds to the outer contour of the molded part.
  • the spinning roller is motion-controlled either via copying templates or via an NC control.
  • the known methods reach their limits when it comes to the deformation of higher-strength materials to form molded parts with different wall thicknesses and / or high demands on dimensional accuracy. Materials of higher strength tend to spring back when pressed, so that they can only be formed with great difficulty over a chuck with great difficulty. While chucks are relatively easy to manufacture, their manufacturing costs are particularly spectacular then noticeably at the cost of the molded part if only a small number of molded parts is to be manufactured.
  • the invention is therefore based on the object of demonstrating a method and a device for inexpensive and dimensionally accurate pressing of molded parts, in particular made of materials which are difficult to deform.
  • a movement control of the spinning tool with controlled force and controlled path along the inner contour of the molded part in connection with the pressing into a free space to the final dimension for example, different resilience properties can be compensated for from molded part to molded part without, for example, a chuck having to be dimensionally changed. Since work is carried out entirely without spinning chucks, it is also possible to manufacture custom-made molded parts in a cost-effective manner, only the movement control of the spinning tools having to be changed.
  • the pressing according to claim 2 is particularly advantageous under increased working temperature, which is however below the hot forming temperature or below the recrystallization threshold for the processed material. It is already known to work under increased working temperature in stretch pressing to reduce the wall thickness, in which a spinning chuck and a spinning roller following the outer contour of the molded part is used. However, this increased working temperature is only carried out by heating the molded part in areas with the aid of a gas flame for the purpose of reducing the tensile strength of the material and reducing the strain hardening caused by the deformation. However, such a procedure leads to tensions and inhomogeneities in the finished molded part.
  • the inventive, two-stage heating in which the entire blank is kept at a constant, elevated, but below the working temperature and is only further heated to the working temperature in certain areas, the occurrence of stresses and the fixing of inhomogeneities in the material are reliably prevented .
  • the measures according to claim 2 are particularly expedient if the molded part is molded freely over air, but they can also be used in conventional pressing processes.
  • the method according to the invention is particularly to be used for processing materials that can be exposed to heat, such as, for example, high-strength aluminum alloys or the like.
  • heat such as, for example, high-strength aluminum alloys or the like.
  • it is possible to recreate such an alloy to process a first strengthening treatment method, for example in the stretched and cold-aged state, in which such alloys normally only allow low degrees of deformation.
  • degrees of deformation over 70 to almost 100 percent can be achieved with high dimensional and shape accuracy.
  • the working temperature is based on the heat aging curve of the specific material in such a way that the optimum increase in strength is not yet achieved within the time required for pressing.
  • the device according to the invention is of particularly simple construction and only requires a change in the movement control of the pressing tool or, if necessary, a change in the span of the clamping device if a change from a molded part to a molded part has to be made.
  • a special deformation behavior of a material can be taken into account much better than when using a compression mold.
  • a device 1 according to the invention for metal pressing can be seen from FIG.
  • the device 1 consists of the actual pressing device 2 with a pressing roller 3 and a molding chamber 4.
  • the pressing roller 3 can be moved in a known manner via a pneumatic device 5, the optimum pressing force for the special shape and dimensions of the molded part and the material used and optimal movement path of the spinning roller 3 can be determined and controlled by a computer 6.
  • the computer 6 is connected to a plotter 7.
  • the pressing device 2 also contains a regionally acting, tyristor-controlled heat source 8, which works with incoherent or coherent light (infrared).
  • the heat source 8 is movable via one of the usual drives 9, the movement of the heat source 8 being controlled by the computer 6 such that the heat source 8 essentially precedes the movement of the pressure roller 3.
  • the molding chamber 4 has a hollow, frustoconical wall which is fastened on one side to a turntable 10 which is set in rotation by a shaft 10a.
  • a clamping device 11 is fastened, which has two annular clamping parts for clamping the circumference of a workpiece.
  • a finished molded part 12 is clamped in the form of a hemispherical container bottom.
  • the molded part 12 was manufactured from a blank 12 'shown in dot-dash lines, which was prefabricated either by conventional pressing or by other known measures.
  • the clamping device 11 protrudes somewhat into the cross section of the molding chamber 4.
  • the molding chamber 4 is also longer in the axial direction than the axial end depth of the molded part 12, so that the molded part 12 is freely pressed, ie without using a chuck, into the free space inside the molding chamber 4 to the final dimension, between the blank 12 'and the wall of the molding chamber 4 remains at a distance in all stages of the pressing process.
  • a supply line 13 for heated air opens, which is connected to a blower 14 and contains a heater 15.
  • the feed line 13 contains a fixed distribution ring 16, in which a flange arrangement 17 connected to the molding chamber 4 can rotate, which causes a tangential introduction of the air through orifices 18.
  • the air is introduced in a direction opposite to the direction of rotation of the molding chamber 4, so that 4 air vortices form in the interior of the molding chamber.
  • 4 air outlet openings 19 are provided in the wall of the molding chamber.
  • a high air throughput is provided so that the temperature of the air is not significantly reduced by the heating of the blank.
  • the good swirling ensures a uniform climate inside the Molding chamber that keeps the blank at a constant temperature.
  • thermocouples 20 which remain on the surface of the blank 12 facing away from the pressure roller 3 during the pressing.
  • Eight thermocouples 20 are preferably used which are distributed uniformly over the surface of the blank 12 '.
  • the data determined by them are transmitted wirelessly from the transmitter 21 to a receiver 22 (FIG. 1), which forwards them to the computer 6.
  • the heat source 8, the heater 15 or the blower 14, or all of them together is controlled.
  • the working temperature is predetermined for each material based on its thermo-mechanical properties and is below the thermoforming temperature or the recrystallization threshold.
  • a substantially hat-shaped blank 12 ' is first pre-formed from a circular blank either by a known pressing method using a spinning chuck or by any other suitable and known method.
  • the blank 12 ' is then provided at selected points with the temperature sensors 20 and clamped with its circumference between the clamping parts of the clamping device 11 in such a way that the preform already protrudes somewhat into the molding chamber.
  • the blower 14 and the heater 15 are turned on and heated air is passed into the molding chamber 4 until the blank 12 'is a has reached a uniform temperature.
  • the maximum aging temperature of which is approximately 180 degrees Celsius, this temperature is approximately 130 degrees Celsius.
  • the heat source 8 preferably being controlled so that it immediately leads the working area of the roller.
  • the heat source 8 is controlled so that it heats the sections to 150 to 175 degrees Celsius immediately before pressing.
  • the special temperature of the partial areas can be selected according to the desired deformation.
  • the forming process according to the invention is thus based on the geometric relationships, the direction of force application and the local frictional relationships in the contact area roll / sheet metal, on a combination of bending, tensile, compressive and shear stresses and differs in this respect at least in the last deformation step from pure flow pressure a chuck.
  • induction heating or another known heat source can also be used for the regionally operating heat source.
  • the prerequisite is that the heat source is able to handle the material warm up completely without overheating the surface.
  • two or more of these heat sources can be used.
  • Computer control can be replaced by control by means of copying templates or a mixture of the two types of control.
  • the process of pushing the molded part into a free space without using a chuck can also be carried out at room temperature.
  • the temperatures used can be matched to the materials used and / or to the desired thermal effects.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
EP91108102A 1990-05-18 1991-05-17 Procédé et dispositif de fluotournage Expired - Lifetime EP0457358B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4016097A DE4016097A1 (de) 1990-05-18 1990-05-18 Verfahren und vorrichtung zum metalldruecken
DE4016097 1990-05-18

Publications (3)

Publication Number Publication Date
EP0457358A2 true EP0457358A2 (fr) 1991-11-21
EP0457358A3 EP0457358A3 (en) 1991-12-04
EP0457358B1 EP0457358B1 (fr) 1993-12-15

Family

ID=6406758

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91108102A Expired - Lifetime EP0457358B1 (fr) 1990-05-18 1991-05-17 Procédé et dispositif de fluotournage

Country Status (3)

Country Link
US (1) US5218849A (fr)
EP (1) EP0457358B1 (fr)
DE (2) DE4016097A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992007672A1 (fr) * 1990-10-31 1992-05-14 Eckart Doege Procede d'emboutissage
EP0593799A1 (fr) * 1992-10-19 1994-04-27 ZEPPELIN-Metallwerke GmbH Procédé et dispositif pour façonner un flan en tôle
US6526794B1 (en) * 1998-04-15 2003-03-04 Südmo Schleicher AG Plate for the spin drum of a centrifuge with spacers and process for its manufacture
EP1728567A1 (fr) * 2005-05-30 2006-12-06 MT Aerospace AG Méthode et dispositif de formage par le vide d'un flan métallique en un corps en forme de cuvette ainsi que l'utilisation de la méthode et du dispositif
US7243517B2 (en) 2003-04-11 2007-07-17 Firma Erich Sieger Method and device for deforming a workpiece made of a material having an exponential tensile stress-strain behavior into a thin-walled, hollow shell
WO2011124341A1 (fr) * 2010-03-29 2011-10-13 Mt Aerospace Ag Procédé pour former au moins une ébauche sensiblement plane pour donner un corps en cuvette, et son utilisation

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4208160A1 (de) * 1992-03-13 1993-09-16 Zeppelin Metallwerke Gmbh Verfahren und vorrichtung zum metalldruecken
JP4209233B2 (ja) * 2003-03-28 2009-01-14 株式会社日立製作所 逐次成形加工装置
DE10324366A1 (de) * 2003-05-27 2004-12-16 Feldbinder & Beckmann Fahrzeugbau Gmbh & Co Kg Verfahren und Vorrichtung zur Herstellung eines Formteiles, sowie Formteil, insbesondere ein Behälterboden
US8561283B1 (en) 2007-10-29 2013-10-22 Prestolite Performance, Llc Method to provide a universal bellhousing between an engine and transmission of a vehicle
US7661282B2 (en) * 2008-03-21 2010-02-16 Gm Global Technology Operations, Inc. Hot forming process for metal alloy sheets
CN102574186B (zh) * 2009-10-21 2015-08-19 斯多里机械有限责任公司 容器和选择性地形成的杯以及它们的制造工具和相关方法
US10525519B2 (en) 2009-10-21 2020-01-07 Stolle Machinery Company, Llc Container, and selectively formed cup, tooling and associated method for providing same
US8337696B2 (en) * 2010-01-28 2012-12-25 Eaton Corporation Method for making a bag filter housing
CN102725079B (zh) 2010-02-04 2015-10-14 皇冠包装技术公司 罐的制造
US8313003B2 (en) 2010-02-04 2012-11-20 Crown Packaging Technology, Inc. Can manufacture
DE102010013206B4 (de) * 2010-03-29 2013-09-05 Mt Aerospace Ag Verfahren zum Umformen eines im Wesentlichen ebenflächigen Rohlings zu einem Schalenkörper und dessen Verwendung
WO2011128347A1 (fr) 2010-04-12 2011-10-20 Crown Packaging Technology, Inc. Fabrication de récipients en métal
US9482308B2 (en) 2011-01-26 2016-11-01 Accel Performance Group Llc Automotive flywheel with fins to increase airflow through clutch, method of making same, and heat management method
US20120186936A1 (en) 2011-01-26 2012-07-26 Prestolite Performance Llc. Clutch assembly cover, method of making same, and optional heat management
US9975164B2 (en) 2012-05-18 2018-05-22 Stolle Machinery Company, Llc Container, and selectively formed shell, and tooling and associated method for providing same
JP6077852B2 (ja) * 2012-12-18 2017-02-08 川崎重工業株式会社 スピニング成形装置
CN104275378B (zh) * 2014-10-24 2016-09-28 中南大学 大径厚比大弓高比封头冲旋成型装置及冲旋方法
US10502306B1 (en) 2016-04-25 2019-12-10 Accel Performance Group Llc Bellhousing alignment device and method
CN107185990A (zh) * 2017-04-25 2017-09-22 苏州罗普斯金铝业股份有限公司 一种型材的等温挤压工艺
WO2021040133A1 (fr) * 2019-08-27 2021-03-04 김동규 Appareil de filage à chaud pour façonner un tuyau sous la forme d'un cylindre de petite taille
CN113996691A (zh) * 2021-11-22 2022-02-01 长春设备工艺研究所 一种用于药形罩成形的精密旋压装置及方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR343135A (fr) * 1904-05-13 1904-09-26 Rudolf Thiel Dispositif pour chauffer les corps creux sur les tours ou les faconneuses
GB201269A (en) * 1922-05-06 1923-08-02 Cyclops Engineering Company Lt Machinery for forming or treating metal discs, such as disc wheels, drum ends, tanks, and other such articles
FR1467526A (fr) * 1966-02-07 1967-01-27 Gen Electric Procédé de formage d'une surface de révolution sans matrice
DE1938403A1 (de) * 1969-07-29 1971-02-18 Messerschmitt Boelkow Blohm Verfahren und Vorrichtung zur Verformung rotationssymmetrischer Werkstuecke mittels eines Fliessdrueckprozesses
FR2154721A1 (fr) * 1971-09-29 1973-05-11 Ottensener Eisenwerk Gmbh

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2408596A (en) * 1944-03-13 1946-10-01 Nat Tube Co Method of forming cylinder ends
FR1039548A (fr) * 1951-07-10 1953-10-07 Procédé de conformation d'un flan métallique
US4058998A (en) * 1976-08-31 1977-11-22 Metal Box Limited Containers
JPS6316816A (ja) * 1986-07-07 1988-01-23 Isao Nemoto 異形管の製造装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR343135A (fr) * 1904-05-13 1904-09-26 Rudolf Thiel Dispositif pour chauffer les corps creux sur les tours ou les faconneuses
GB201269A (en) * 1922-05-06 1923-08-02 Cyclops Engineering Company Lt Machinery for forming or treating metal discs, such as disc wheels, drum ends, tanks, and other such articles
FR1467526A (fr) * 1966-02-07 1967-01-27 Gen Electric Procédé de formage d'une surface de révolution sans matrice
DE1938403A1 (de) * 1969-07-29 1971-02-18 Messerschmitt Boelkow Blohm Verfahren und Vorrichtung zur Verformung rotationssymmetrischer Werkstuecke mittels eines Fliessdrueckprozesses
FR2154721A1 (fr) * 1971-09-29 1973-05-11 Ottensener Eisenwerk Gmbh

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992007672A1 (fr) * 1990-10-31 1992-05-14 Eckart Doege Procede d'emboutissage
EP0593799A1 (fr) * 1992-10-19 1994-04-27 ZEPPELIN-Metallwerke GmbH Procédé et dispositif pour façonner un flan en tôle
US5426964A (en) * 1992-10-19 1995-06-27 Zeppelin-Metallwerke Gmbh Method & apparatus for shaping a sheet blank
US6526794B1 (en) * 1998-04-15 2003-03-04 Südmo Schleicher AG Plate for the spin drum of a centrifuge with spacers and process for its manufacture
US7243517B2 (en) 2003-04-11 2007-07-17 Firma Erich Sieger Method and device for deforming a workpiece made of a material having an exponential tensile stress-strain behavior into a thin-walled, hollow shell
EP1728567A1 (fr) * 2005-05-30 2006-12-06 MT Aerospace AG Méthode et dispositif de formage par le vide d'un flan métallique en un corps en forme de cuvette ainsi que l'utilisation de la méthode et du dispositif
US7644600B1 (en) 2005-05-30 2010-01-12 Mt Aerospace Ag Method and device for forming an essentially flat metal blank to produce a thin-walled, shell-type body, and the use of same
WO2011124341A1 (fr) * 2010-03-29 2011-10-13 Mt Aerospace Ag Procédé pour former au moins une ébauche sensiblement plane pour donner un corps en cuvette, et son utilisation

Also Published As

Publication number Publication date
DE59100714D1 (de) 1994-01-27
US5218849A (en) 1993-06-15
EP0457358A3 (en) 1991-12-04
EP0457358B1 (fr) 1993-12-15
DE4016097A1 (de) 1991-11-28

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