Metal deforming – By application of fluent medium – or energy field – With actuated tool engaging work
Patent
1997-11-20
2000-01-04
Hail, III, Joseph J.
Metal deforming
By application of fluent medium, or energy field
With actuated tool engaging work
72 61, B21D 3908
Patent
active
060097345
ABSTRACT:
The invention relates to a process and apparatus for manufacturing hollow sections with cross-sectional expansions in end portions thereof. A hollow blank is widened and calibrated by internal high pressure forming by means of a forming tool receiving it, and, after the calibration, is separated in the area of the widening while forming two hollow sections with cross-sectionally widened ends facing one another in the separated position. In order manufacture from a hollow blank hollow sections with the lowest possible reject rate and therefore in a reliable process, which are cross-sectionally widened on the end side by means of high degree for forming, the blank is widened while the forming tool is open and is simultaneously upset to form a rotationally symmetrical bulging hollow section by means of a pressure force which is axially directed from the outside to at least one of the two blank ends.
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Augustin Helmut
Bloecker Henning
Dudziak Kai-Uwe
Hardtke Uwe
Rogowski Carsten
DaimlerChrylser AG
Hail III Joseph J.
Hong William
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