Cutting – Processes – Cutting wall of hollow work
Patent
1997-11-20
1999-12-07
Rachuba, M.
Cutting
Processes
Cutting wall of hollow work
72 55, 83 25, 83188, B21D 2602, B21D 2818
Patent
active
059964553
ABSTRACT:
A method and a device for producing holes in the circumference of a hollow shape, with a wall piece being separated as a slug from the hollow shape in an internal high-pressure mold and being jammed without projecting relative to the outer circumference of the hollow shape in a previously produced hole. In order to remove the slug produced during punching in simple fashion from the internal high-pressure mold, the separated slug is jammed at a fluid pressure that is reduced relative to an internal high fluid pressure without loss via a punch and can separate the slug following removal of the finished hollow shape from the internal high-pressure mold, from the hollow shape, finally clearing the hole.
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Haag Ulrich
Hardtke Uwe
Hulsberg Thomas
Daimler-Chrysler AG
Rachuba M.
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