Search International and National Patent Collections

1. (WO2014206981) TOOL FOR PREFORMING A TUBE FOR SUBSEQUENT INTERNAL HIGH PRESSURE FORMING, AS WELL AS A METHOD FOR PRODUCING SUCH A TOOL AND FOR PRODUCING A COMPONENT BY MEANS OF INTERNAL HIGH PRESSURE FORMING

Pub. No.:    WO/2014/206981    International Application No.:    PCT/EP2014/063275
Publication Date: Thu Jan 01 00:59:59 CET 2015 International Filing Date: Wed Jun 25 01:59:59 CEST 2014
IPC: B21D 26/033
B21D 26/047
Applicants: BAYERISCHE MOTOREN WERKE AKTIENGESELLSCHAFT
Inventors: LERCH, Johann-Stefan
SCHMOLKE, Thomas
Title: TOOL FOR PREFORMING A TUBE FOR SUBSEQUENT INTERNAL HIGH PRESSURE FORMING, AS WELL AS A METHOD FOR PRODUCING SUCH A TOOL AND FOR PRODUCING A COMPONENT BY MEANS OF INTERNAL HIGH PRESSURE FORMING
Abstract:
The invention relates to a tool (200) for preforming a metallic starter tube section (100) for subsequent internal high pressure forming in order to produce a tube-like IHF-component, comprising a plurality of tool sections (210, 220) that can move relative to one another and that delimit, between them, a shaping cavity (230) for receiving and forming the starter tube section (100). The cavity (230) comprises a contour which is both derived from the shape of the IHF component to be produced and adapted to the circumference (U1) of the starter tube section (100) to be formed, such that each cavity cross section perpendicular to a cavity longitudinal axis (L) predefined by the starter tube section (100), corresponds to the cross-sectional shape of the IHF component cross-section in the same position, reduced in its cross-sectional circumference to exactly the circumference of said starter tube section (100). The invention also relates to a method for producing such a tool (200) and to a method for producing a tube-like IHF component using such a tool (200).