Dbt Deutsche Bergbau-Technik Gmbh

Boart Longyear Gmbh & Co. Kg

Boart Longyear Gmbh & Co. Kg Hartmetallwerkzeugfabrik

Barat Carbide Holding Gmbh

Wolfgang Wald

Ernst Heiderich

Reinhold Walter

Martina Stuckardt

Heinrich Bauschulte

Marco Schumann

Georg Marker

Peter Wollenhaupt

Peter Richter

A cutting insert for a cutting or breaking tool, which can be mounted in a tool holder that can be rotated about its longitudinal axis, especially for a lathe chisel, has an essentially conical tip, a transition region and a foot for connecting to a tool body, wherein the transition region has several spatial areas which are distributed over its periphery and adjoin one another forming spatial and cutting edges.

Cutting or breaking tool as well as cutting insert for the latter

In the plough pick arrangement according to the invention for mining ploughs or coal ploughs, the plough pick is held in the socket of a pick holder. On that side of the pick holder which is leading in the working direction of the plough pick a pick lead-through opening is provided through which the pick can be inserted by its shank until it reaches a rear stop and is retained by a securing device. The pick can be removed from the socket through the same opening, after the securing device has been released, when pick replacement is necessary. This makes it possible to insert the pick into and remove it from the pick holder, not from the working side, but from the front of the holder. The pick holder and the pick are preferably provided with co-operating bearing and guiding faces which are inclined at an oblique angle to a plane parallel with the working face so that the cutting bit of the pick moves away from the working face when the pick is removed.

Pick system for mining ploughs, in particular coal ploughs

A chisel holder is connected exchangeably in a fixed manner to at least one base mount disposed on a surface of a cylindrical cutting device, such as a cutting machine or a line milling machine, in a manner obviating use of a threaded setscrew. A borehole extends through the base mount, and a securing bolt received therein grips at least regionally through or behind an aligned recess formed in the chisel holder. The securing bolt is then clamped or locked to the base mount without use of threads.

Cylindrical cutting device

Growing community of inventors

Rasdorf, Germany

Wolfgang Wald