METHOD AND DEVICE FOR PRODUCING A SCREW CONNECTION POINT

The invention relates to a method and a device for producing a screw conn ection point (1) on the periphery (34) of a hollow section (7), that is expa nded by a high-pressure fluid. An attachment (17, 31) comprising a bore (18) with an inner thread is mounted on the hollow section (7) in the hydrofo...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	LANGWALDT, SILKE, MARTENS, RUDIGER, FALKE, JURGEN, GRAF, DENIS, DUDZIAK, KAI-UWE, KOLLN, JORG, SCHULT, JENS
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING MACHINE TOOLS MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS PUNCHING METAL SOLDERING OR UNSOLDERING TRANSPORTING WELDING WORKING BY LASER BEAM WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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Beschreibung
Zusammenfassung:	The invention relates to a method and a device for producing a screw conn ection point (1) on the periphery (34) of a hollow section (7), that is expa nded by a high-pressure fluid. An attachment (17, 31) comprising a bore (18) with an inner thread is mounted on the hollow section (7) in the hydroformi ng mould (2) and a hole is then made in the hollow section (7) in alignment with the bore (18). The aim of the invention is to produce a durable screw c onnection point (1) on the periphery (34) of a hollow section (7) in a simpl e and reliable process. To achieve this, the attachment (17, 31) is advanced towards the hollow section (7) with the aid of an electrode (11, 30) that i s integrated into the hydroforming mould (2). The attachment (17, 31) is res istance welded to the hollow section (7) by means of the electrode (11, 30), once said attachment has been placed on the mould relief (5) in the vicinit y of the screw connection point (1) to be created.