Patent ID: 6715332
Filing Date: 2004-04-06
Classification: B21C

Abstract:
A drawing unit for a drawing machine capable of drawing an elongated metal workpiece and having at least one die through which the workpiece is drawn, said drawing unit comprising:a machine frame forming an elongated path along which said workpiece is drawn; at least one drawing carriage provided with a workpiece gripper and displaceable back and forth linearly along said path to draw said workpiece through said die; and a controlled linear motor complex assigned to said drawing carriage and acting upon the respective drawing carriage for independent displacement of the drawing carriage along said path, said linear motor complex for each said carriage comprising one or more linear motor units and the linear motor complex is assembled modularly from linear motor units with a drawing force predeterminable by selection of the number of linear motor units or the driving force of the linear motor units assembled together to form said linear motor complex, wherein said drawing carriage is formed as a combined predrawing and drawing carriage and the drawing unit has exclusively said combined carriage or said combined carriage and at least one other drawing carriage, said linear motor complex for driving said combined predrawing and drawing carriage having a greater driving force than the linear motor complex for driving said other drawing carriage.