EP 3924114 B1 20240515 - METHOD AND APPARATUS FOR AXIALLY SHAPING A TUBE
Title (en)
METHOD AND APPARATUS FOR AXIALLY SHAPING A TUBE
Title (de)
VERFAHREN UND VORRICHTUNG ZUM AXIALEN UMFORMEN EINES ROHRES
Title (fr)
PROCÉDÉ ET DISPOSITIF DE DÉFORMATION AXIALE D'UN TUBE
Publication
Application
Priority
- DE 102019103926 A 20190215
- EP 2020053307 W 20200210
Abstract (en)
[origin: WO2020165082A1] The invention relates to a method and an apparatus for axially shaping a tube (200) with the aid of a mandrel (110), which is guided in the tube (200), and an annular die (120), which is guided on the outside of the tube (200). For shaping the tube (200), it is known to clamp it in a clamping device (140). It is also known to reduce the outside diameter of the tube (200) over a free portion of the tube (200) by moving the annular die in a pushing direction S. In order in the case of the tube (200) shaped in this way to allow not only axial stretching but also the formation of undercuts (220, 240) on the outside and inside the tube (200), the method according to the invention also provides the following steps: Reversing the direction of movement of the die (120) and of the mandrel (110) from the pushing direction into an opposite pulling direction Z when an end position is reached. In a first setting step, the die (120) and the mandrel (110) are then moved in relation to one another to a first predetermined annular-gap setting and, in a subsequent first shaping step, the die (120) and the mandrel (110) are moved in the pulling direction Z, while the preset annular gap is maintained, for the purpose of shaping the tube (200).
IPC 8 full level
B21C 1/26 (2006.01); B21C 1/18 (2006.01); B21C 1/24 (2006.01); B21C 5/00 (2006.01); B21C 37/16 (2006.01)
CPC (source: EP US)
B21C 1/18 (2013.01 - EP); B21C 1/24 (2013.01 - EP); B21C 37/16 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2020165082 A1 20200820; CA 3130018 A1 20200820; CN 113396023 A 20210914; CN 113396023 B 20240426; DE 102019103926 A1 20200820; EP 3924114 A1 20211222; EP 3924114 B1 20240515; MX 2021009582 A 20210923; US 2022134401 A1 20220505
DOCDB simple family (application)
EP 2020053307 W 20200210; CA 3130018 A 20200210; CN 202080014326 A 20200210; DE 102019103926 A 20190215; EP 20704838 A 20200210; MX 2021009582 A 20200210; US 202017431149 A 20200210