Method and device for the integral molding of a flange to...

Details Method and device for the integral molding of a flange to... Method and device for the integral molding of a flange to...

2011-03-22

2011-03-22

Tolan, Edward (Department: 3725)

Metal deforming

By use of tool acting during relative rotation between tool...

During rotation of work

C072S101000, C072S107000, C072S121000

Reexamination Certificate

active

07908898

ABSTRACT:
The invention proposes a method for the integral molding of a flange (5) onto the end of a round or oval pipe (11) of thin-walled sheet metal. This method takes place in two stages. In a first stage, for the purpose of accumulating material, a sectionally circular or spiral-shaped bead (17) is molded on by means of a pre-forming roller tool (9), comprising a combination of rollers (13to15) (Figure a). In a second stage, the molded-on bead is compacted with the aid of a final-forming roller tool (18), comprising the rollers (19) and (20), to produce an at least partly solid flange (5) (Figure b).

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