Bar knife with variable edge rounding, use and processing method

摘要

Carbide bar knife (30) with a shaft (31) and an active part (32), which has a main free surface (33), a secondary free surface (34), a rake surface (33) and a cutting edge (39) in the head region (K) , At least one of the surfaces (33, 34) defines a main cutting edge (38) with a geometry that is effective in a machining process, the main cutting edge (38) having a radius of curvature (rho¶F¶) that is smaller than the radius of curvature ( rho¶ head¶) of the cutting edge (39).