Abstract: A knife ring machining tool for machining chips, with a knife ring comprising a crown of knife packets as well as two carrier rings carrying the packets, which rings are arranged on the ends of the knife packets. Each knife packet includes a knife that is inclined against the radial direction and whose cutting edge faces inward, with a rotor arranged coaxially with the knife ring and surrounded by the latter. The rotor includes a plurality of rotor blades that carry strip-shaped cleaving knives on the outer ends, which knives for their part run parallel to the rotor axis and extend over the width of the rotor. Each cleaving knife is fastened by screws to the associated rotor blade, while each screw connection comprises a wedge element that tapers outward in radial direction in a wedge shape, as viewed in a section vertical to the rotor axis.

Abstract: There is provided a knife-ring remover for chips having a knife ring arranged rigidly on an axis. The knife ring has a collar of knives and first and second bearing rings concentric to the axis. A housing, that partly encloses the knife ring, has a rear wall, an essentially cylindrical sheath and a door disposed opposite to the rear wall for driving out a rotor. The rotor has a pair of front walls that bear a plurality of blades. The rotor is mounted in a rotatable manner on the axis. First and second abrasion sealing rings are disposed in the regions of the first and second bearing rings. Each abrasion sealing ring has an inner axial edge that lies at least approximately in the same plane perpendicular to the axis as an axial inner edge of the corresponding bearing ring. One abrasion sealing ring is connected to the door and the other is attached directly or indirectly to the rear wall.