Comminuting machine used for comminuting any material comprises comminuting tools having cutting regions in a direction of rotation of a shaft, and rigid cutting tools

摘要

Comminuting machine comprises comminuting tools (3) having at least two cutting regions in a direction of rotation of a shaft (2). At least one inner cutting region with a relatively small lever arm traps and comminutes more material. At least one outer cutting region with a relatively large lever arm traps and comminutes less material. The contours of both cutting regions form a circle about the shaft axis in the direction of the shaft axis. The comminuting machine also comprises rigid cutting tools (4) having several saw-like teeth with two tooth flanks (4.3) arranged at an angle to each other and cooperating in a cutting manner with one of the cutting regions. In each early active cutting position, a tip of the comminuting tools forming a first chisel edge (3.4) is offset parallel to a tip of a tooth of the rigid cutting tools forming a second chisel edge (4.4) and directed so that it moves past in a cutting manner so that in addition to the cutting forces produced between the cutting regions of the comminuting tools and the cutting edges of the rigid cutting tools, a breaking edge parallel to the shaft axis is maintained with a notch effect offset parallel to the material (5) and a specifically high force. The material is exposed to an active and additional comminuting process under aggressive participation of the teeth of the rigid cutting tools.