Winkelmann Powertrain Components Gmbh + Co. Kg

Wf-maschinenbau Und Blechformtechnik Gmbh & Co. Kommanditgesellschaft

Winkelmann Foundation Screw Sp. Z O.o.

Wf-maschinenbau Und Blechformtechnik Gmbh & Co. Kg

Bernd Rudert

Karl-Heinz Hecker

Christian Malkemper

Heiko Ohlscher

Ralf Pottgueter

Heinrich Winkelmann

Ralf POTTGÜTER

A method for producing a screw foundation for securing elements in the ground, provides a cylindrical tube as an initial form and a conical front portion tapering to an insertion tip is then molded on to the cylindrical tube using a non-cutting process, the front portion being provided at least in some regions with a thread-like contour for screwing into the ground. An inner contour for a screwing tool is formed integrally in a rear end of the tube by flow forming, and the front portion and the thread-like contour are formed exclusively by flow forming.

Method for producing a screw foundation for securing elements in the ground

A method for chipless production of a rotationally symmetrical body from a circular sheet metal blank shapes the circular sheet metal blank into a pot-shaped body by pressing or pressure rolling around an inner mandrel, and a hub-shaped projection protruding outward from the base of the pot-shaped body is molded on by pressing around a central projection. The circular sheet metal blank is clamped only in the radial inner region of the blank in the axial direction between the inner mandrel and at least one projection during the shaping process.

Method for the chipless production of a rotationally symmetrical body from a circular sheet metal blank

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Ahlen, Germany

Bernd Rudert