Arnold Umformtechnik Gmbh & Co. Kg

Wuerth International Ag

Swg Schraubenwerk Gaisbach Gmbh

Volkswagen Ag

Wuerth International Ag Part Interest

Swg Schraubenwerk Gaisbach Gmbh Part Interest

Wurth International Ag

Adolf Würth Gmbh & Co. Kg

Uwe Wolfarth

Günter Stiebitz

Bernd Werthwein

Guenter Stiebitz

Thomas Noack

Friedrich Beck

Lars Wiese

Christoffer Meyer

Alex Lindt

Dominik Leykauf

The invention relates to a method for producing a connecting element comprising at least two ball-like sections, wherein two ball-like sections are directly adjacent to each other, or wherein two ball-like sections are connected to each other by means of a connecting section, wherein the rolling of a single-piece blank, which is cylindrical at least in sections, between at least two rolling tools and the shaping of the at least two ball-like sections and optionally of the connecting section during the rolling are provided.

Method for producing a connecting element, connecting element, and rolling tool

Device () for manufacturing a component compound by resistance welding, comprises a welding electrode () for transmitting an electric current to a joining element () and for exerting a joining force onto the joining element () along a joining direction () in order to establish a connection of the joining element () with a structural element by resistance welding; as well as a positioning device () for positioning at least one joining element () on the axis of the joining direction () in order to contact and particularly apply a force to the joining element () by means of the welding electrode (). The positioning device () comprises a retention device () for exerting a retention force onto the joining element (), wherein the retention device () is movably arranged.

Device and method for manufacturing a compound component and motor vehicle

The invention concerns a screw, in particular a self-tapping screw, with a screw thread which reaches to the front end of the screw formed as a drilling tip. In the front area, starting with a distance from the front end of the screw, there is an opposite thread showing the same pitch as the screw thread, however, its thread height is lower than the thread height of the screw thread. This second, opposite single-thread, double-thread or triple-thread/multi-thread only reaches over the tapered drilling tip and leaves the shank of the screw free. It forms a cutting edge with its thread edge which is used to cut fibers in order to reduce wedge effect during screwing in the screw. The screw is particularly suitable for wood or wood-like materials in the edge areas of structural elements.

Screw

A screw, in particular a self-tapping screw, has a screw thread which covers up to the front end of the screw formed as a drilling tip or cutting tip. In the front area, starting with a distance from the front end of the screw, there is an opposite thread showing the same pitch as the screw thread, however, its thread height is lower than the thread height of the screw thread. This second, opposite single-thread, double-thread or triple-thread/multi-thread forms a cutting edge with its thread edge which is used to cut fibers in order to reduce wedge effect during screwing in the screw. The screw is particularly suitable for wood or wood-like materials in the edge areas of structural elements.

Growing community of inventors

Schrozberg, Germany

Uwe Wolfarth