EP0151976A2 - Dispositif et procédé pour l'emboutissage au tour - Google Patents

Dispositif et procédé pour l'emboutissage au tour Download PDF

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Publication number
EP0151976A2
EP0151976A2 EP85100675A EP85100675A EP0151976A2 EP 0151976 A2 EP0151976 A2 EP 0151976A2 EP 85100675 A EP85100675 A EP 85100675A EP 85100675 A EP85100675 A EP 85100675A EP 0151976 A2 EP0151976 A2 EP 0151976A2
Authority
EP
European Patent Office
Prior art keywords
pressure
force components
rollers
workpiece
axial
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.)
Ceased
Application number
EP85100675A
Other languages
German (de)
English (en)
Other versions
EP0151976A3 (fr
Inventor
Fritz Prof. Dr.-Ing. Fischer
Franz Dr. Gütlbauer
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.)
Leifeld GmbH and Co
Original Assignee
Leifeld GmbH and Co
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 Leifeld GmbH and Co filed Critical Leifeld GmbH and Co
Publication of EP0151976A2 publication Critical patent/EP0151976A2/fr
Publication of EP0151976A3 publication Critical patent/EP0151976A3/fr
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B21B38/08—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring roll-force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
    • B21B19/12—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially parallel to the axis of the work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/78—Control of tube rolling
    • 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

Definitions

  • the invention relates to a device for pressure rolling of the type specified in claim 1, and to a method for pressure rolling using this device.
  • Spinning rollers are a non-cutting cold forming process in which a rotationally symmetrical blank is stretched to form a thin-walled, rotationally symmetrical hollow body, usually over a mandrel, by one or more spinning rollers lying against its outer circumferential surface, by means of rotation and axial feed between the blank and rollers becomes.
  • the object of the invention is to improve a device of the type mentioned so that it allows full consideration of the forming forces actually occurring, and to show possibilities for optimizing the flow pressing process taking into account the determined forming forces.
  • the inventive determination of the axial, radial and tangential force components on the spinning roller with respect to the workpiece makes it possible to make a precise statement about the corresponding force components at the forming point of the workpiece, and thus also about the flow behavior of the material.
  • Knowledge of these forces can then be used in a variety of ways to improve the dimensional accuracy, surface quality and mechanical properties of the workpieces produced by flow pressures.
  • these measured force components and / or their relationship to one another can be used to continuously control the parameters which are decisive for flow pressing, such as feed speed, rotational speed (or their relationship to one another) and / or delivery of the pressure rollers. This is preferably done on the basis of empirically determined curves which indicate the optimal, material-typical relationship between the respective force components and the manipulated variable to be influenced and which can be stored or entered in the control or regulating device to which the measuring device is connected.
  • the device has in the usual way a spindle 10, on which a mandrel 16 is clamped, which carries the workpiece 18.
  • the spindle 10 is driven via an intermediate shaft 26 by a drive unit 22, which is either infinitely variable in speed or contains a continuously variable transmission.
  • a feed cylinder 12 which is supplied with pressure medium via a pump unit 14 and a control valve 15, serves to advance the spindle 10 in the axial direction.
  • the workpiece 18 runs against a set of pressure rollers 20, only one of which is shown, and is formed into an elongated tube while reducing its outer diameter.
  • the device according to the invention can also be designed without a mandrel 16, e.g. for the pressure rolling of non-cylindrical workpieces, which can also be closed at one end, in which case the workpiece is clamped to the spindle 10 by means of a chuck 17 indicated by dashed lines.
  • the pressure roller 20 is rotatably mounted on a bearing block 28 which is fastened to a bearing plate 30 which is supported at its four corners via four support points 32 on a support plate 34 which in turn is connected to the machine frame in a manner not shown.
  • Each support point contains a piezoelectric sensor 36, for example with quartz elements, which generates independent measurement signals for the three mutually perpendicular components of the force acting on it.
  • the four sensors 36 (only two of which are visible in the drawing) are connected to an evaluation device 38, which can contain, for example, a computer.
  • This evaluation device 38 determines from the measurement signals of the piezoelectric transducers 36, taking into account their geometric arrangement relative to the pressure roller 20, the force components acting on the pressure roller 20 due to the load on the workpiece 18 in the three mutually perpendicular spatial directions, namely the force K a parallel to the axis of the workpiece 18, the force K r in the radial direction of the workpiece 18 and the force K in Tangential direction to the workpiece 18.
  • the evaluation device 38 can also be designed such that it determines further quantities derived from these force components, in particular the ratio of the force components to one another, for example the ratio K r / K t .
  • the evaluation device 38 is connected to a control device 40.
  • this setpoint curves are stored, which indicate a desired relationship between one or more of the quantities determined in the evaluation unit 38, i.e. the force components or their relationships, and certain process parameters of the pressure rolling, for example the feed to be maintained and / or the speed of the workpiece.
  • the speed of the drive unit 24 and / or the control valve 15 controlling the axial feed is controlled such that with every change in the forces acting on the pressure roller 20, a corresponding change in the feed and / or the speed corresponding to the / control unit 40 is given Target curve takes place.
  • Either only the speed or only the feed is preferably controlled in such a way that the ratio between feed and speed, the so-called “related feed”, is brought to a specific value predetermined by the target curve.
  • the evaluation unit 38 is also connected to a display and / or registration device 42, through which documentation the measured values of the force components occurring during the pressure rolling are possible.
  • the measuring device can either be provided on only one pressure roller or on all pressure rollers. In order to control the feed and / or the speed of the workpiece, a value which is mathematically combined from the corresponding measured values of the different spinning rollers can then be used. Measuring sensors 11, 13 can also be provided for the feed and rotation of the spindle 10 and their outputs can also be connected to the evaluation device 38.
  • three pressure rollers 20, 20a, 20b are arranged at uniform angular intervals around the workpiece 18, which is shown partly in section and partly in side view.
  • the bearing block 28 is supported by four support points 32 with measuring sensors on a support plate 34, which in turn is adjustable in the radial direction of the workpiece 18 on a workpiece 18 surrounding, e.g. annular bracket 46 is attached.
  • Hydraulic working cylinders 48 in particular can be used for radial adjustment.
  • the two other pressure rollers 20a, 20b are assigned sensors and adjusting devices (not shown).
  • the piezoelectric transducers 36 are connected to an evaluation device 38 which, as in the embodiment 1 determines the axial, radial and tangential force components acting on the pressure roller 20 and inputs them into a control unit 4U which, for example, in turn controls a hydraulic device 49 which supplies the working cylinders 48 with hydraulic pressure, so that the infeed of the Press roller 20 against the workpiece 18 can be changed or regulated accordingly.
  • a control unit 4U which, for example, in turn controls a hydraulic device 49 which supplies the working cylinders 48 with hydraulic pressure, so that the infeed of the Press roller 20 against the workpiece 18 can be changed or regulated accordingly.
  • Corresponding actuating devices can also be provided for axially adjusting each pressure roller.
  • the measuring device with the control or regulating circuit is only shown for the pressure roller 20, but the pressure rollers 20a and 20b are also each provided with such a control or regulation circuit, so that on each pressure roller, regardless of the other pressure rollers, the infeed can be regulated according to the force components acting on the pressure roller.
  • the carrier 46 for the spinning rollers can be immovably attached to the machine frame. However, an arrangement is also possible in which the workpiece 18 is not rotated, but rather the carrier 46 is driven in rotation with the pressure rollers 20, 20a, 20b.
  • each spinning roller can be provided with its own control circuit for the infeed according to FIG. 2, and the measuring devices of all spinning rollers can also be connected to a common evaluation and Control unit for additional control or regulation of other operating parameters, such as the feed rate, the speed of the workpiece, the coolant supply and the like. be connected.
  • the ratio of the axial and tangential forces can be influenced.
  • This force ratio influences the twisting of the workpiece around the longitudinal axis during flow pressing, and thus the internal stresses.
  • the ratio between the axial and tangential force on the spinning roller determined in the evaluation device is preferably used as the control variable for regulating the feed rate. If the measured ratio between axial and tangential force deviates from the target value to such an extent that it can no longer be corrected by feed control, this can be used as an indication that a spinning roller with a different diameter should be used.
  • the properties of the finished workpiece, in particular the fiber rotation around the longitudinal axis, can also be determined by differently dividing the proportions of each spinning roll in the overall form tion can be influenced.
  • the embodiment shown in FIG. 2 enables the control circuit of each individual spinning roller to be given a different setpoint characteristic and thus to regulate different infeeds of the rollers.
  • the device according to the invention makes it possible to obtain measurement values for the various force components on the pressure roller by means of a test measurement at the start of the flow pressing, which allow a statement as to whether the roller geometry selected in each case (diameter, inlet angle, outlet angle and the like). ) is optimally selected. Measured values that deviate greatly from the expected value can serve as an indication that a spinning roller with a different geometry should be used.
  • Flow pressing of non-cylindrical workpieces In the case of non-cylindrical, in particular ogival (ogive shaped in longitudinal section) workpieces by means of pressure rollers arranged offset in the longitudinal direction of the workpiece, the force components measured on each individual pressure roller can also be used for the optimal setting of each individual pressure roller.
  • small adjusting cylinders 37 are shown between the bearing plate 30 and the support plate 34 in addition to the sensors 36, which can be acted upon by a hydraulic or pneumatic pressure medium to pull the plates 30 and 34 against each other with a desired force.
  • the functioning of the measuring sensors 36 can thus be tested and the measuring signal emitted by them can be calibrated in accordance with the predetermined target force.
  • the transducers can be pre-tensioned so that no tensile forces can occur on them during operation.
  • feed means other than hydraulic can also be used for the workpiece, e.g. a spindle drive. Rotation and / or feed can also be brought into effect on the spinning roller holder instead of on the workpiece.
  • An important influencing variable in the case of pressure rolling with a plurality of rollers is the axial offset of the successive rollers in the direction of rotation, which is designated ⁇ x in FIG. 2, and the different radial infeed of the offset rollers.
  • the proportion of the individual roll in the total forming depends on this, and this influences the structural structure of the workpiece obtained as a result of the forming.
  • the invention makes it possible to offset the rolls and / or their undersides for each workpiece by means of test measurement of the force components on the rollers on an initial section of the workpiece, which is usually cut away anyway.
  • the axial offset of the pressure rollers can also be made a parameter that is controlled in dependence on the force during operation.
  • the bearing block 28 of each pressure roller 20, 20a, 20b is provided with an adjusting device 50.
  • this is only indicated for the pressure roller 20a in FIG. 3 and can e.g. consist of a hydraulic actuating cylinder, which is acted upon by a hydraulic device 52, which in turn is controlled by the control and regulating device 40 as a function of the measured force components.
  • the adjusting device 50 can also be different, e.g. be designed as an electric motor-driven and correspondingly electrically controlled adjusting spindle.
  • a desired axial offset .DELTA.x between adjacent pressure rollers can be set and continuously adjusted during operation, for example in such a way that the to the
  • Axial force components occurring in spinning rolls are kept equal to one another or in a certain, constant ratio.
  • the solidification of the workpiece 18 that occurs during the forming can also be influenced.
  • the radial feed of the pressure rollers is preferably carried out in such a way that the radial force components K r are the same on all pressure rollers. If, on the other hand, a certain axial offset ⁇ x of the pressure rollers is either set permanently or continuously adjusted during operation, then a correspondingly different radial infeed of the pressure rollers must also take place, since a radial feed of axially offset pressure rollers of equal force can lead to a curved course of the workpiece. Therefore, the radial infeed of the spinning rollers is preferably controlled so that the ratio of the radial force components on two adjacent spinning rollers is kept at a constant value adapted to the respectively chosen axial offset ⁇ x of the spinning rollers.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Measuring Fluid Pressure (AREA)
EP85100675A 1984-01-24 1985-01-23 Dispositif et procédé pour l'emboutissage au tour Ceased EP0151976A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843402301 DE3402301A1 (de) 1984-01-24 1984-01-24 Vorrichtung und verfahren zum drueckwalzen
DE3402301 1984-01-24

Publications (2)

Publication Number Publication Date
EP0151976A2 true EP0151976A2 (fr) 1985-08-21
EP0151976A3 EP0151976A3 (fr) 1985-11-13

Family

ID=6225742

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85100675A Ceased EP0151976A3 (fr) 1984-01-24 1985-01-23 Dispositif et procédé pour l'emboutissage au tour

Country Status (2)

Country Link
EP (1) EP0151976A3 (fr)
DE (1) DE3402301A1 (fr)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2619915A1 (fr) * 1987-08-25 1989-03-03 Man Technologie Gmbh Dispositif de mesure des efforts de formage radiaux sur des machines de fluotournage
FR2632881A1 (fr) * 1988-06-18 1989-12-22 Man Technologie Gmbh Procede pour la regulation de l'ajustage de rouleaux de laminage par pression par rapport a une piece cylindrique tubulaire a laminer
WO1991017004A1 (fr) * 1990-05-04 1991-11-14 Eckehart Schulze Procede de commande des mouvements de revolution du cylindre d'impression d'une machine a imprimer et machine a imprimer pour mettre en ×uvre ce procede
EP0456951A1 (fr) * 1990-05-14 1991-11-21 FATA EUROPEAN GROUP S.r.l. Machine-outil, en particulier pour la fabrication, à partir de tôles, de pièces mécaniques telles que poulies, roues et similaires
FR2755040A1 (fr) * 1996-10-31 1998-04-30 Aerospatiale Procede de fabrication par fluotournage a froid d'une piece en alliage inconel 718
FR2856190A1 (fr) * 2003-06-13 2004-12-17 Vacuumschmelze Gmbh & Co Kg Corps creux a symetrie de revolution en alliage magnetique dur deformable, et utilisation et procede de fabrication d'un tel corps creux
WO2005016570A1 (fr) * 2003-08-14 2005-02-24 Willy Voit Gmbh & Co. Kg Procede de fabrication de corps creux, corps creux et utilisation du corps creux
EP1328358B1 (fr) * 2000-10-26 2006-05-24 Regent Technologies Ltd. Procede de reduction de la largeur des fentes dans des colonnes perdues tubulaires a fentes
EP2052810A1 (fr) * 2007-10-22 2009-04-29 EADS Deutschland GmbH Porte-outil et procédé de formation de feuille incrémentielle l'utilisant
US8997541B2 (en) 2009-07-09 2015-04-07 Leifeld Metal Spinning Ag Method and device for stretch-flow forming
CN109365609A (zh) * 2018-11-22 2019-02-22 杭州康新轴承制造有限公司 一种卡车汽车离合器分离轴承外壳碾压成套设备
EP3670019A1 (fr) * 2018-12-21 2020-06-24 Tubacex Innovación A.I.E. Procédés et machines de production de tubes au moyen d'une formation d'écoulement
CN112620460A (zh) * 2019-12-30 2021-04-09 航天特种材料及工艺技术研究所 一种三旋轮数控旋压机的力平衡控制方法
CN113102596A (zh) * 2021-06-15 2021-07-13 山东奥扬新能源科技股份有限公司 一种瓶体生产用内胆旋压设备
US20210370376A1 (en) * 2018-05-23 2021-12-02 Federal-Mogul Valvetrain Gmbh Method for producing a hollow valve for internal combustion engines

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4313648C2 (de) * 1993-04-21 1997-10-09 Mannesmann Ag Verfahren und Vorrichtung zum Herstellen von nahtlosen Rohren durch Drückwalzen
NL1005319C2 (nl) * 1997-02-20 1998-08-24 Johan Massee Inrichting voor het bewerken van een werkstuk.
DE19731055A1 (de) * 1997-07-19 1999-01-21 Dynamit Nobel Ag Vorrichtung und Verfahren zum Einformen einer Rillenstruktur in ein rohrförmiges Werkstück
DE19830817B4 (de) * 1998-07-09 2011-06-09 Leifeld Metal Spinning Gmbh Verfahren zum Umformen eines Werkstücks durch Drückwalzen
DE10115815C2 (de) * 2001-01-04 2002-10-31 Leico Werkzeugmaschb Gmbh & Co Drückwalzverfahren und Vorrichtung zum Drückwalzen
JP4055850B2 (ja) 2001-01-04 2008-03-05 ライフェルト メタル スピンニング ゲーエムベーハー フローフォーミング方法および装置
DE10302211B4 (de) * 2003-01-22 2006-02-02 Zf Sachs Ag Schwingungsdämpfer
DE202017007601U1 (de) 2017-06-20 2023-07-03 Profiroll Technologies GmbH Umformmaschine
DE102017113503A1 (de) * 2017-06-20 2018-12-20 Profiroll Technologies Gmbh Umformmaschine und Druckumformverfahren
DE102018112295A1 (de) * 2018-05-23 2019-11-28 Federal-Mogul Valvetrain Gmbh Verfahren zur herstellung eines hohlventils mit optimierter schaftinnengeometrie für verbrennungsmotoren

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DE2106703A1 (de) * 1970-02-27 1971-09-16 Boeing Co Vorschubsteuersystem für Fräsmaschinen, verbessertes Fräsmaschinensteuersystem und Fräskraftmeßfühler hierfür
US3834615A (en) * 1972-03-23 1974-09-10 Okuma Machinery Works Ltd Method for monitoring machining condition of machine tool
JPS56154227A (en) * 1980-04-28 1981-11-28 Toshiba Corp Forming method by spinning
JPS57181728A (en) * 1981-04-30 1982-11-09 Matsushita Electric Works Ltd Spinning machine
JPS5835025A (ja) * 1981-08-25 1983-03-01 Toshiba Corp スピニング成形方法
DE2457504C3 (de) * 1974-12-05 1983-04-21 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Fließdrückverfahren und -maschine

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Publication number Priority date Publication date Assignee Title
DE2106703A1 (de) * 1970-02-27 1971-09-16 Boeing Co Vorschubsteuersystem für Fräsmaschinen, verbessertes Fräsmaschinensteuersystem und Fräskraftmeßfühler hierfür
US3834615A (en) * 1972-03-23 1974-09-10 Okuma Machinery Works Ltd Method for monitoring machining condition of machine tool
DE2457504C3 (de) * 1974-12-05 1983-04-21 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Fließdrückverfahren und -maschine
JPS56154227A (en) * 1980-04-28 1981-11-28 Toshiba Corp Forming method by spinning
JPS57181728A (en) * 1981-04-30 1982-11-09 Matsushita Electric Works Ltd Spinning machine
JPS5835025A (ja) * 1981-08-25 1983-03-01 Toshiba Corp スピニング成形方法

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INDUSTRIE-ANZEIGER, Band 95, Nr. 105, 14. Dezember 1973; G.PRITSCHOW "Ein Schnittkraftmesssystem f}r Prod uktionsdrehmaschinen", Seiten 2499-2450 *
PATENT ABSTRACTS OF JAPAN, Band 6, Nr. 39, 10. März 1982, Seite (M-116)(917); & JP-A-56 154 227 (TOKYO SHIBAURA) 28-11-1981 *
PATENT ABSTRACTS OF JAPAN, Band 7, Nr. 116, 20. Mai 1983, Seite (M-216)(1261); & JP-A-58 035 025 (TOKYO SHIBAURA) 01-03-1983 *
PATENT ABSTRACTS OF JAPAN, Band 7, Nr. 25, 2. Februar 1983, Seite (M-190)(1170); & JP-A-57 181 728 (MATSUSHITA) 09-11-1982 *

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2619915A1 (fr) * 1987-08-25 1989-03-03 Man Technologie Gmbh Dispositif de mesure des efforts de formage radiaux sur des machines de fluotournage
FR2632881A1 (fr) * 1988-06-18 1989-12-22 Man Technologie Gmbh Procede pour la regulation de l'ajustage de rouleaux de laminage par pression par rapport a une piece cylindrique tubulaire a laminer
WO1991017004A1 (fr) * 1990-05-04 1991-11-14 Eckehart Schulze Procede de commande des mouvements de revolution du cylindre d'impression d'une machine a imprimer et machine a imprimer pour mettre en ×uvre ce procede
EP0456951A1 (fr) * 1990-05-14 1991-11-21 FATA EUROPEAN GROUP S.r.l. Machine-outil, en particulier pour la fabrication, à partir de tôles, de pièces mécaniques telles que poulies, roues et similaires
FR2755040A1 (fr) * 1996-10-31 1998-04-30 Aerospatiale Procede de fabrication par fluotournage a froid d'une piece en alliage inconel 718
EP0841107A1 (fr) * 1996-10-31 1998-05-13 AEROSPATIALE Société Nationale Industrielle Procédé de fabrication par fluotournage à froid d'une pièce en alliage inconel 718
EP1328358B1 (fr) * 2000-10-26 2006-05-24 Regent Technologies Ltd. Procede de reduction de la largeur des fentes dans des colonnes perdues tubulaires a fentes
FR2856190A1 (fr) * 2003-06-13 2004-12-17 Vacuumschmelze Gmbh & Co Kg Corps creux a symetrie de revolution en alliage magnetique dur deformable, et utilisation et procede de fabrication d'un tel corps creux
US7942981B2 (en) 2003-06-13 2011-05-17 Vacuumschmelze Gmbh & Co. Kg Rotationally symmetrical hollow body made of a deformable permanently magnetic alloy and its use and production process
WO2005016570A1 (fr) * 2003-08-14 2005-02-24 Willy Voit Gmbh & Co. Kg Procede de fabrication de corps creux, corps creux et utilisation du corps creux
WO2009053323A2 (fr) * 2007-10-22 2009-04-30 Eads Deutschland Gmbh Porte-outil et procédé de formage incrémental l'utilisant
WO2009053323A3 (fr) * 2007-10-22 2009-08-06 Eads Deutschland Gmbh Porte-outil et procédé de formage incrémental l'utilisant
EP2052810A1 (fr) * 2007-10-22 2009-04-29 EADS Deutschland GmbH Porte-outil et procédé de formation de feuille incrémentielle l'utilisant
US8997541B2 (en) 2009-07-09 2015-04-07 Leifeld Metal Spinning Ag Method and device for stretch-flow forming
US20210370376A1 (en) * 2018-05-23 2021-12-02 Federal-Mogul Valvetrain Gmbh Method for producing a hollow valve for internal combustion engines
US11654471B2 (en) * 2018-05-23 2023-05-23 Federal-Mogul Valvetrain Gmbh Method for producing a hollow valve for internal combustion engines
CN109365609A (zh) * 2018-11-22 2019-02-22 杭州康新轴承制造有限公司 一种卡车汽车离合器分离轴承外壳碾压成套设备
CN109365609B (zh) * 2018-11-22 2023-12-26 杭州康新轴承制造有限公司 一种卡车汽车离合器分离轴承外壳碾压成套设备
EP3670019A1 (fr) * 2018-12-21 2020-06-24 Tubacex Innovación A.I.E. Procédés et machines de production de tubes au moyen d'une formation d'écoulement
WO2020127798A1 (fr) * 2018-12-21 2020-06-25 Tubacex Innovación A.I.E. Procédés et machines pour produire des tubes par fluotournage
CN112620460A (zh) * 2019-12-30 2021-04-09 航天特种材料及工艺技术研究所 一种三旋轮数控旋压机的力平衡控制方法
CN113102596A (zh) * 2021-06-15 2021-07-13 山东奥扬新能源科技股份有限公司 一种瓶体生产用内胆旋压设备
CN113102596B (zh) * 2021-06-15 2021-09-03 山东奥扬新能源科技股份有限公司 一种瓶体生产用内胆旋压设备

Also Published As

Publication number Publication date
DE3402301A1 (de) 1985-08-01
EP0151976A3 (fr) 1985-11-13
DE3402301C2 (fr) 1990-06-21

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