Rotary crosscut saw for cutting strips of material into format sizes with peripherally arranged cutter knives at pitch equal to format length

摘要

A strip of material (2) is formed into an arc by a roller table (3) in the direction (A) having a radius equal to the effective radius of the cutter wheel (5). Cutter knives (6) are arranged around the wheel periphery at pitches equal to the desired format length with a curved under blade (8). The peripheral speed (v3) of the cutter wheel is given by the vector addition (1') of the material speed (v1) and (v2) saw speed across the material.