VERFAHREN UND VORRICHTUNG ZUM SCHNEIDEN VON SCHLITZEN IN ROHRFOERMIGE KOERPER

摘要

The invention relates to a process and device for cutting slots (13) in tubular bodies. The tubular bodies (2) are conveyed intermittently and slotted (13) during the stationary stages. To this end the cutter (1) has an intermittent conveyor for the tube (2), preferably in the form of at least one conveyor worm (3) with straight and oblique sections (4, 5). In addition, the cutter (1) has several blade shafts (6) rotatably arranged around the tube (2), the direction and drive of which are matched to the feed rhythm. With a larger number of blades (7), the blade shafts (6) are divided into two groups and slot the tube (2) in groups and in succession. The angular position and direction of rotation of the blade shafts (6) are mutually determined so that there is always the same number of blades in the cutting position and that the moments exerted on the tube (2) by the cutting forces are mutually compensated.