Patent ID: 6508516
Filing Date: 2003-01-21
Classification: B28D,E21C

Abstract:
In a tool for at least one of a coal cutting machine, a mining machine and a road cutting machine, having a round-shaft cutter with a cutter head and a cutter shaft, wherein a wear-protection disk is pushed on the cutter shaft, on an upper side of the cutter shaft the cutter head rests, the cutter shaft is inserted into and captively held within a receiver of a cutter holder, an opposite side of the wear-protection disk is supported on a support surface of the cutter holder, and the wear-protection disk is maintained on the cutter holder and fixed against relative rotation by at least one holding element, the improvement comprising:the wear-protection disk (30) forming a tab (33) designed as a holding element and bent at a right angle in a direction toward the cutter holder (20), and the tab (33) interlockingly fixed in place in a circumferential direction of the wear-protection disk (30) on a stop of the cutter holder (20); the receiver (21) cut into a holding projection (24) of the cutter holder (20), the holding projection (24) having a protrusion bearing the support surface (22), the support surface (22) extending to radially outwardly dimension limits of the protrusion, and the wear-protection disk (30) covering the entire support surface (22); and the protrusion of the holding projection (24) being cylindrical and symmetrical with respect to a center longitudinal axis (18) of the receiver (21), and the protrusion having at least one tangential flattened and indented place (25) forming the stop against which the tab (33) rests.