A device for the machining of flat products by means of a powder ferromagnetic

摘要

P the invention relates to the machining of parts by abrasion. The device forming the subject of the invention is characterized in that it comprises a screen, it is the mesh size of which is lower than the minimum size of grains of powder, and which is disposed at the - bottom of the cylinder of less than 3, in the zone of action of the magnetic field, the force of the latter being sufficient to maintain the ferromagnetic powder on the cylinders of the machine 2, 3, as well as to raise the lower cylinder 3, the ferromagnetic grains of powder have fallen on the sieve it during the machining of the sheets. / p & & p & in particular, the invention applies to the machining of the blanks of the printed circuit boards. / p