Hilti Aktiengesellschaft

Carl Hoffmann

Franz Huber

Corinna Achleitner

Simon Oppeneiger

Georg Oberndorfer

Andreas Vorhauer

Juergen Gahn

Walter Vallaster

Martin Pleil

Jürgen Pritz

Berthold Aumueller

Christian Schallert

Marcel Wondra

Jürgen Gahn

Berthold Aumüller

A chiseling hand-held power tool having a tool holder for holding a tool on a working axis, an electric motor, and a striking mechanism. The striking mechanism has an excitation piston coupled to the motor, a striker guided on the working axis and a pneumatic chamber closed by the excitation piston and the striker for coupling a movement of the striker to the excitation piston. The rotational speed of the electric motor corresponds to at least 20 times the striking rate of the striking mechanism.

Hand-held power tool

A method for manufacturing a thread-forming screw having a shank and a thread formed in one piece with the shank and region-wise circumferentially arranged on the shank, is disclosed. After the formation of the thread on the shank, a plurality of recesses is subsequently stamped into the thread. Then, a plurality of compact cutting elements is welded into the recesses in the thread, where the cutting elements are made of a hard material and have a hardness greater than the hardness of the thread. Additionally, a stamping device for carrying out the method is also disclosed.

Method for manufacturing a thread-forming screw

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Lindau, Germany

Carl Hoffmann