Verfahren und Vorrichtung zum Abrunden von Borstenenden von Buersten

Device for rounding off thermoplastic brush ends by applying laser beams simultaneously to a number of brush ends. Pulse duration is in the order of a few microseconds and output ranges between kilowatts and megawatts. Use is made of a laser beam which is basically parallel to the brushes and a cross-section which preferably corresponds to that of the brush field. To avoid melting down the shaft material of the brush groups arranged at a distance from one another, the laser beam is concentrated on at least part of the brush ends in each particular brush group when processing brush groups arranged at a distance from one another.