Schumag Ag

Sms Schumag Gmbh & Co. Kg

Dirk Hessberger

Thomas Cmiel

Bruno Walczak

Heiner Kudrus

Erich Walczak

Karlheinz Grouls

A method for the drawing of a longitudinal workpiece wherein drawing forces required for the drawing are applied by means of at least a sprocket chain comprising link plates wherein the drawing forces are introduced from the workpiece via the link plates into the sprocket chain as a result of which the latter can be constructed lighter and apply greater drawing forces.

Drawing machine and method for drawing an elongated workpiece

For retrofitting conventional machining apparatuses, in particular cross-cut machines, with a workpiece holder, the invention proposes a workpiece holder with at least one continuous clamping chain that is provided on one side with a plurality of clamping jaws.

Workpiece holder for a machining apparatus and a corresponding cross-cut machine

A chain drawing machine for continuous drawing of drawing stock made of metal and the like, in particular rod-shaped and tubular drawing stock, includes at least two drive chains associated with a common drawing path. Each of the drive chains has connected drawing members, with the drawing members having on one side a clamping shoe that can be pressed against the drawing stock, and on the other side a sliding surface. The drawing members are supported on a fixed roller guide that is associated with each driving chain, and on the sliding surface by rotating load-bearing idler rollers. At least one relief recess divides a respective roller guide into several guide paths; and at least one relief recess divides a respective sliding surface into several sliding paths. This arrangement, in conjunction with a circumferential taper in the idler rollers extending across the entire sliding surface, elastically supports the drive chains which increases of the load-bearing capacity of the machine.

Growing community of inventors

Aachen, Germany

Dirk Hessberger