Method and device for manufacturing brushes

Abstract

Method for manufacturing brushes whereby openings ( 3 ) for bundles of fibers ( 5 ) are provided in a brush body ( 2 ), to which end the brush body ( 2 ), while it is placed in a positionable brush body holder ( 18 ), is being presented to a boring tool ( 19 ), whereby this boring tool ( 19 ) is moved to and fro according to the boring direction in order to carry out the actual boring operation on the one hand, and in order to provide for a depth compensation on the other hand, characterized in that the actual boring operation and the depth compensation are realized by means of a single drive element ( 24 ).

1 . A method for manufacturing brushes wherein openings for bundles of fibers are provided in a brush body, and wherein the brush body, while it is held in a positionable brush body holder, is presented to a boring tool, comprising moving the boring tool and the brush body holder to and fro relative to each other along the boring direction in order to carry out the boring operation, and using a single drive element to carry out the to-and-fro motion and boring steps.  
   
   
       2 . The method according to  claim 1 , wherein at least a drill head of the boring tool is mounted on a carriage, and moving the carriage by means of said drive element.  
   
   
       3 . The method according to  claim 1 , wherein, for the drive element, use is made of an electric drive element.  
   
   
       4 . The method according to  claim 1 , wherein the immediate speed of the above-mentioned relative to-and-fro movement of the boring tool in relation to the brush body is set by means of a control of the drive element.  
   
   
       5 . The method according to  claim 1 , wherein the above-mentioned control of the drive element enables a depth compensation which takes the relative positioning of the brush body in relation to the drill head into account.  
   
   
       6 . A device for manufacturing brushes according to the method of  claim 1 , comprising at least a boring device and wherein the boring device comprises a positionable brush body holder and a boring tool, and including a drive device arranged to move the boring tool relative to the brush body holder in a to and fro direction along the boring direction so as to carry out a boring operation, and wherein the drive device comprises a single drive element.  
   
   
       7 . The device according to  claim 6 , comprising a carriage, and wherein at least a drill head of the boring tool can be moved to and fro by means of said carriage, and wherein the carriage is controlled by the drive element.  
   
   
       8 . The device according to  claim 6 , wherein the drive element comprises a controllable positioning motor.  
   
   
       9 . The device according to  claim 6 , wherein that the drive element comprises an electric drive element.  
   
   
       10 . The device according to  claim 6 , wherein that the drive element comprises a servomotor of the rotating or linear type.  
   
   
       11 . The device according to  claim 6 , including a control unit controlling the above-mentioned drive element, so that during each boring cycle, a boring movement as well as a depth compensation is carried out as a function of the position taken by the positionable brush body holder.