Abstract: An automatic punching machine for making brushes comprises a slide connected to a first actuator for receiving bundles of fibers and feeding them to a brush body; a needle connected to a second actuator for inserting the bundles of fibers inside corresponding openings of the brush body; a first and a second sensor for detecting a first and second signal representing the position of the slide and of the needle; a memory containing data of a trend of a control parameter representing the position of the slide as a function of a synchronization parameter having a predetermined relationship with a parameter representing the needle position; a processor programmed for deriving in real time values of the synchronization parameter and for controlling the first actuator by feedback as a function of the first and second signals, the synchronization parameter and the data contained in the memory.

Abstract: An automatic punching machine for making brushes comprises a slide connected to a first actuator for receiving bundles of fibers and feeding them to a brush body; a needle connected to a second actuator for inserting the bundles of fibers inside corresponding openings of the brush body; a first and a second sensor for detecting a first and second signal representing the position of the slide and of the needle; a memory containing data of a trend of a control parameter representing the position of the slide as a function of a synchronization parameter having a predetermined relationship with a parameter representing the needle position; a processor programmed for deriving in real time values of the synchronization parameter and for controlling the first actuator by feedback as a function of the first and second signals, the synchronization parameter and the data contained in the memory.