Abstract: A beater bar for a rock impact crusher, in particular a rotary impact crusher, including a carrier which, in the region of a cutting edge, has a plurality of cutting elements made of a hard material arranged next to one another. For the purpose of simple maintenance and for improved cost-effectiveness of the beater bar, according to this invention two or more cutting elements are fastened on a cutting-element holder, and two or more cutting-element holders can be interchangeably fastened to the carrier.

Abstract: A beater bar for a rock impact crusher, in particular a rotary impact crusher, including a carrier which, in the region of a cutting edge, has a plurality of cutting elements made of a hard material arranged next to one another. For the purpose of simple maintenance and for improved cost-effectiveness of the beater bar, according to this invention two or more cutting elements are fastened on a cutting-element holder, and two or more cutting-element holders can be interchangeably fastened to the carrier.

Abstract: A tool for a coal cutting, mining or road cutting machine, having a round-shaft cutter with a cutter head and a cutter shaft. A wear-protection disk is pushed on the cutter shaft, on an upper side of which the cutter head rests. The cutter shaft is captively held in a receiver of a holding projection of a cutter holder in a direction of a center longitudinal axis of the projection but freely rotatable around the center longitudinal axis. The projection has a support surface which extends at least in sections around the receiver on which a wear-protection disk rests with an opposite surface and is supported on a support surface of the cutter holder. The cutter head rests on the upper side of the wear-protection element facing away from the support surface.

Abstract: In a method for the adaptive automatic control of position-adjustable drives, optimized parameters are determined from the drive motion, wherein the optimized parameters are stored with corrected parameters entered into data memory storage. In order to avoid in a method of this kind, involving a reduction of the cycle times, an overshooting in the target position, even in case of non-cyclical positioning sequences, a drive distance, determinant for an operational course, is determined between its stop points and is subdivided into calculated, consecutively numbered distance zones or angle zones and these numbers of system zones or numbers of angle zones are stored in a data memory storage. With the aid of the thus determined distance zones or angle zones, the values describing the drive motions are determined and are sub-divided in each case into a consecutively numbered zone system and are stored in a data memory storage.

Abstract: A manipulating apparatus includes a first linear axis element (X), comprising two parallel individual axis elements (20a, 20b). The first linear axis element (X) includes a double slider (25, 27). The double slider runs on the profiles of the two individual axis elements (20a, 20b). The double slider is coupled with a drive means of the one individual axis element and runs without drive means on the profile of the other individual axis element. This manipulating apparatus permits the largest possible number of motion possibilities and motion processes along several coordinate directions within a smallest possible space.